I wrote into the assignment criteria box Essay Example | Topics and Well Written Essays - 2500 words

I wrote into the assignment criteria box - Essay Example orm of foreign direct investment, the companies buy controlling stakes in domestic firms and then reenergize the whole structure of the firm to make it more profitable and competitive. Their strategy have been quite simple as even a layman would believe in putting money in those areas or economy where the market if not growing at some astronomical rate but at least have a positive growth despite sluggishness (Krugman, 1998). The merger movement around the world has caused massive effect with growing rate of cross-border mergers and acquisitions. Being termed as an important tool for investment from industrial nations to developing ones, these merger and acquisition are relatively small size in if compared with mergers as compared to those in advanced countries, it gives the receiving developed nation a much needed boost to the economies of their nations. The involvement of transnational companies in the domestic market also provides the developing nation an environment of technologic al and managerial efficiency. The major bane in the growth of developing nation has been the lack of modern approach in management practices and use of technology. The indigenous research of the government and other agencies has been either lagging behind or has failed to yield any result. The need of the hour for the government is to adopt newer policies and its approach to engage transnational companies in its territory would yield higher growth in GDP and per capita income. The capability of domestic companies also gets strengthen in a pro-growth environment. As a whole the government’s agenda of creating an era of growth and prosperity gets fulfilled in various phases. The purpose of government selling its controlling state in public sector units or state enterprises is for strengthening the support system of the nation. Support system in this scenario is actually the infrastructure that would provide the base to individuals, investors and other enterprises in delving the nation

Choosing a Secondary Storage Essay Example for Free

Choosing a Secondary Storage Essay Introduction Nowadays, data is the lifeblood for today’s digital organization. The integrity, availability and the protection of the date are vital to a business productivity and successfulness, therefore storage solutions are still the priority in IT budgets. GJ Consultation Sdn Bhd currently is facing a storage problem. Their storage system performance’s bottlenecks having a serious impact on their business productivity. The sluggish primary storage performance and maintenance issue were slowing down the company’s response to customer request which affecting the overall business productivity. Besides, their backup solution was becoming difficult to effectively protect date within ever shrinking back up window. Thus GJ Consultation Sdn Bhd now needed to search for a secondary storage which can solve all the problems. They require a storage that can optimize storage response time, ensure disaster recovery, implement a highly solution and the most important is to ensure a better access to customer date and protect more than 100TB of data without adding heavy cost and complex management. The era of data and information clearly shows that there is a rising demand for more storage. There are a numbers of options available in the market. The most prevalent would be direct-attached storage (DAS), network-attached storage (NAS) and storage area network (SAN). There is no one is the best for everyone. It is important to focus on the specific needs and the business goals of the organization. Therefore, there are several factors to consider which include capacity, performance, reliability, data protection and budget concerns. We will look into that in more detail later. Many people will argue that SAN are more powerful that NAS, but for GJ Consultation Sdn Bhd, I suggest that the Network Attached Storage (NAS) would be the most suitable storage solution to solve their storage problems. The factors that affecting of choose a secondary storage will be discussed in the next section. NAS is a data storage systems with a specialized hardware and software attached to a network. NAS products is an information data storage server, they have converged to serve all in one servers for date based applications. A NAS is to provide storage and access to data. Picture 1.1 show the Network-attached storage. 2.0 Factors affecting of choosing a secondary storage A storage solution can be defined as a hardware whose main function is to store and sharing data or information. There are many types of storage with many different functions. The storage for business usually is in the form of servers. To choose a right storage for your business, there are several factors that need to be considering when choosing storage which include reliability, capacity and scalability, the budget concern. Capacity The first factor that need to taken into consideration when choosing storage is the capacity of the storage. It is very important that we should very clear that what is the size and scope of the data that you want to store and what capacity is needed to store it? The firm should choose the storage which suitable for the organization or business purpose and functions. The firm should also consider the types of data to store and the frequency of access the data when choosing a storage. NAS systems can provide many terabytes of storage in high density. GJ Consultation Sdn Bhd is a consulting firm which provides services in finance and business strategy to leading law firms and government agencies. They have a lot of date that need to store and share with customer which some of it might sensitive. Therefore it is suggested that they should choose a file-level storage. A NAS device is a single storage unit best suited for file-level storage connected directly to network. NAS often configures especially for file- sharing. Performance Speed Different storage will have different return rate of speeds for data. If the date store is monthly use, means that you no need the fastest storage; if the date store will be use very frequently, is better to choose the fast performance storage. Knowing this can help you save in cost. A business normally will look for a better file access speed. GJ Consultation might need a fast performance storage since they are providing consultant services to customers which the date stored might be use frequently and need to response to customers very quickly. Transfer speed over the network is the primary indicator of a NAS because it uses file-level protocol when uploading or downloading large files. NAS can provide performance benefits. For example, NAS can take over the work of serving the email data, freeing resources on the email server for email-specific processes. Scalability Scalability is important in terms of both computing power and storage capacity. The performance and capacity should scale independently of one another. Scalability is important because the ability of the storage would need to be expanded in future in order to cope with increased use. NAS is a suitable storage which suggested for GJ Consultation Sdn Bhd because it is easy to set up and easy to use, even a non IT based staff can manage the NAS. Reliability Reliability of storage also is one of the factors which is very important and need to be concerned. Reliability is important because the loss of data and downtime can lead to loss in revenue and threaten the survival of the business. In today’s world, most of the people demand a highly reliability, shared storage device that is accessible to multiple network devices. NAS is the newer version of storage after DAS (data-attached storage), it use of highest-performing drives with premium components that been qualified to extreme premium environment. NAS is suitable for GJ Consultation Sdn Bhd since it produce the most reliable and highest-performance data storage solution. NAS is same reliable with normal server. From the storage functional system, concepts are equally. They both can act as server. Even lower end NAS systems have the high reliability features such as RAID and hot swappable drives and components. Cost or budget concern Usually is the main concern of an organization to purchase a certain products or services. Cost in here not only means the equipment cost, but management and maintenance cost as well. Management and maintenance cost at here meaning that the cost to maintain the storage, the cost to hire the IT consultant to give training on the ways to use the storage and so on. GJ Consultation Sdn Bhd is having a storage problem and they want to buy a suitable storage which can help them solve the problem they are facing currently without adding heavy cost for their business. Here, it is suggested to the firm that network-attached storage (NAS) would be a suitable storage solution which is less expensive if compare to others. The management and maintenance cost is lower also because NAS is easy to set up and easy to use. Security The firms have a lot of date and some of the data might be sensitive which relate to legal need to be store and share between customers, thus data protection can be one of the factors that need to be taking into consideration also. NAS provides data protection benefits in data protection plan and provide redundant storage for sensitive data. Every NAS appliance includes user security to allow or restrict file access based on username and passwords. Management Management here means the administrator who in charge of the storage solution. He need to be aware of the challenges that might be arise for the solution and consider what are the monitoring tools are available to monitor performance and warn for the possible failures. The storage should not be too complex to manage in order to save the cost of management and maintenance. 3.0 Advantages of seeking a higher performing storage A secondary storage device for computers are not only for storing back up files, they also allow computers users to expand their ability to transfer a large amounts of data from one computer to another. For GJ Consultation Sdn Bhd, as I mention earlier, the suggested storage that most suitable if the Network Attached Storage (NAS). There are several advantages of seeking a higher performing storage which suggested here. Mass Storage The capacity of the secondary storage is very high that allow us to store a large amount of data. We can store the data into the secondary storage in the form of gigabyte and terabytes. In that case, we can back up the all data easily and need not worry for losing data. Usually an organization will have plenty of data that need to be stored to support the business operations. For this, the primary storage would not be able to do it. NAS provide an efficient of sharing a large individual files among individual users. NAS can store and manage the data up to terabytes level. Besides, NAS allowed us to add more storage without shutting down the network. Reliability Security It is considered safe that storing data into the secondary storage. The data can be store in the secondary storage which is the NAS in permanent form. Therefore the firm no needs to worry of loss of data or lack of data even after many years later. NAS provide data protection benefits so that it is safe to store the sensitive data. This is one of the advantages by choosing NAS because GJ Consultation Sdn Bhd is handle highly sensitive data. The data stored on live database server will be stored to NAS in the same time so that the data will exist even if the database server faced physical failure. Performance The computer could have a better performance with adding a secondary storage. This can help users to increase the speed of storing data, access data or transferring data which indirectly increase the productivity of the firm. With a secondary storage, the computer of the organization can fully operate effectively. Performance of serving files can be increase by a NAS because NAS included file-system storage. NAS is a system used for storing files in a central location, accessible through a network, so that other computer systems can store and retrieve the data files. Comfort The date store in the secondary storage can be accessed easily and immediately. The data can share with others such as customers very easily and convenient. This can increase the productivity of the organization and contribute to gain profit for the organization. NAS is a server which has the dual function of application serving and files sharing and provides a lot of flexibility in data access by virtue of being independently. The utility rate of NAS is high because the storage is shared across multiple servers. Multiple NAS systems or devices can be manage by a central and then it can conserving the time and resources, Economic The cost of a secondary storage is cheaper than adding the memory of the computer. For GJ Consultation Sdn Bhd, NAS is suggested to them as their secondary storage rather than a SAN. SAN requires the purchase of a Fibre Channel which is very expensive; NAS requires a standard Ethernet NIC which is much cheaper. This indirectly reduces the cost for storage devices. Furthermore, SAN is very hard to understand, it will cause the management and the maintenance cost increase; however NAS is easy to understand and easy to maintain, indirectly reduces the cost of management and maintenance for the firm. NAS is a simple and cost-effective way to achieve fast data access for multiple clients at the file level. 4.0 Disadvantages of seeking a higher performing storage There is nothing perfect in this world; there is no any storage which is the best. A secondary storage has several advantages and of course has several of disadvantages. Over Whelmed NAS can be used by many computers on a network. When everyone is trying to access the device at the same time, it might lead to overwhelmed. This could happen because of the limitation of network bandwidth, and the processing power within the device. When there is a large amount of users simultaneously access data, it will create the bottlenecks on the local area network and server. Besides, NAS device could become a single point of failure. To solve this issue, those important files across multiple units should be distribute, schedule and run regular remote backup routines. Financial Budget concern Getting a higher performance of storage, in other words that is one of the expenses cost for the Organization. No matter how valuable is the storage, it still will affect the financial budgeting for the organization for short term. The organization needs to allocate fund for the storage equipment cost, and also for the maintenance and management cost of the storage. This is just a very short term disadvantages because advantages of the secondary storage will contributes profits to the organization and then can cover the cost of getting the storage. Time consuming The staffs of the organization might need times to understand and make use of the secondary storage. The administrator would first study and understand in detail for the storage then he might need to give training to the staffs in order for them to know how to operate and maximize the usage of the storage. This is important because if the secondary storage not fully utilize by the organization would be wastage for the organization. However this might take some times to completely educate everyone in the organization to fully utilize the storage and it is hard to ensure whether the storage has been fully utilized. There will be a wastage and loss of money for the organization if the users of the organization not able to use the storage. That is no point of spending an amount of money for the organization to buying a powerful product but no one can fully utilize it. Backup challenge We can back up the data by NAS but because NAS is file-level storage, which means transferring data and storing data is by file-level. If users have millions of small files, it could be a problem to back up the data because NAS will store the data by file name. NAS cannot do image-level backup and cannot serve raw device. Besides, NAS is difficult to backup the data to tape. Large block of data A NAS is not able to move a large block of data which is important for bandwidth-intensive applications such as imaging, database or transaction processing. NAS does not offer fast data transfer while reducing input/output latency or server workloads. NAS also not provide high volume transaction processing especially the companies that conduct business on the web. Same with the backup issues, if the user has millions of small file that want to store or share to another, NAS is not an option to do that. The only way to solve this without adding budget to seeking for the other storage is adding the capacity of the NAS, since the scalability of NAS is high but of course it has its limit. 5.0 Conclusion Digital assets will only continue to growth rapidly in the future. It is important to choose the right storage and to implement technologies that based on the industry standard which can minimize the interoperability concerns and provides long term investment protection for the organization.

macbeth: symbolism :: essays research papers

In every Shakespearean tragedy there is always something called the â€Å"fatal flaw†. This flaw is seen in the main character or hero of the play. The hero always has the ability to overcome or control this flaw, however, if he can not control this flaw he reaches a point of doom. A point in the story where he has no choice but to continue downward through the spire of entropy. This leads to the tragedy. His or her end. The flaw is usually a master passion. This passion controls the hero’s thoughts and actions, and, if unable to control this passion it will lead to his doom. In Shakespeares â€Å"Macbeth†, Macbeth is an anti hero. He is very ambitious and courageous. However, he is also a moral coward, this is Macbeths fatal flaw, which in the end leads to his doom. Shakespeare defines Macbeth as a hero very clearly. His valor in defense of Scotland is significant in the opening scene. However, he is very ambitious to be king. At the beginning of the play, he was loyal to the king. While he did imagine the murder his mind rejects it and said, "Why, if chance will have me king, why, chance may crown me," (1.3.12-13). Yet his ambition increasingly defeated his good nature. In the play, everyone seems to want power. Usually, men are the ones who are outward and aggressive about it, and women are more subdued about it. Lady Macbeth has a great deal of power over Macbeth the power which she holds over him, is the fact that she possesses more of the "manly" quality than Macbeth himself. Because of this, Macbeth is ashamed of himself. Macbeth constantly tries to disprove Lady Macbeths doubt of his manhood. "When you durst do it, then you were a man, And, to be more than what you were, you would, Be so much more the man." (1.7.22). As you can see in this quote, Lady Macbeth has her doubts. However, the three witches control the most power, or the â€Å"ultimate† power in the play. "All hail, Macbeth! Hail to thee, thane of Glamis! All hail, Macbeth! hail to thee, thane of Cawdor! All hail, Macbeth! that shalt be king hereafter." (1.3.8-9). If they had not informed Macbeth about this, Lady Macbeth would never of found out about it and would not has expected Macbeth to murder the king, ultimately leading to Macbeths doom.

Department of Electrical and Computer Engineering: Final Examination

University of Waterloo Department of Electrical & Computer Engineering E&CE 231 Final Examination – Spring 2000 Aids: Formula Sheets (attached), Scientific Calculator Time Allowed: 3 hours Exam Type: Closed Book Instructor: C. R. Selvakumar Date: August 10, 2000 Max Marks: 100 Instructions: Answer all questions in PART-A and any two questions in full from PART-B. State your assumptions clearly. Be concise, precise and clear in your answers General assumptions to be made when not specified in a question: (a) Assume that the semiconductor is Silicon. (b) Assume that the temperature T = 300K c) Use the data given in the formula sheets where needed. (d) Use the following expressions for the Effective Density of States in the Conduction Band (NC) and in the Valence Band (NV) respectively: 3 2 3 3 3 ? m ? ? T ? 2 ? 3 N C = 2. 5 ? 1019 ? ? cm ? m 0 ? ? 300 ? * n ? m* ? 2 ? T ? 2 p ?3 19 N V = 2. 5 ? 10 ? ? m ? ? 300? cm ? ? 0? PART -A 1a) Consider a Silicon p+-n diode with the foll owing doping densities: NA = 1019 cm-3 and ND is 1016 cm-3. The diode has an area of 100  µm by 20  µm. (i) Without doing any calculations, sketch the capacitance versus reverse voltage (VR) starting from VR = 0. (4 marks) (ii)Calculate the voltage at which you will obtain the minimum capacitance and also determine (calculate) the minimum capacitance at that voltage. (10 marks) (iii) Derive the mathematical relations you use in calculating the quantities in (ii) above. (16 marks) 1b) Assuming that the p+ region and the n-region of the diode described in 1a) above are ‘long’ compared to the minority carrier diffusion lengths in those regions, show how you would obtain the complete Current-Voltage (I-V) Characteristic of the diode. You can assume that there is no recombination in the space-charge layer and you need not solve the continuity equation.Sketch the electron and hole current distributions in the entire device. (10 marks) Page 1 PART B 2a) Draw a clearly labe lled band diagram of an n-p-n transistor under thermal equilibrium and superimpose on it a band diagram of the same transistor when it is under normal forward active mode of operations. (8 marks) 2b) Derive an expression for the common emitter current gain $ ($ = IC/IB), in terms of the doping densities in the different regions, thickness and carrier diffusivities and diffusion lengths. Assume that there is no recombination in the neutral base or in the space-charge layers.Also, assume that the conventional reverse saturation current of the reverse-biased diode, IC0, is negligible. Assume that short-region approximation is valid in the base and that the bandgap narrowing in the emitter is important. No need to solve continuity equations and you can assume the expected carrier distributions. (12 marks) 2c) Obtain the modified Ebers-Moll (EM) equations from the original EM equations given in the formula sheet. Sketch Common-Base output characteristics based on the modified EM equation s and show the Forward Active Region of operation, Saturation Region and Cut-off Region. 10 marks) 3a) A silicon n-p-n transistor has an emitter doping NDE = 1020 cm-3 and a base doping NAB = 1016 cm-3. The emitter is 1  µm thick and assume that the hole diffusion length in the emitter is 0. 1 :m. The base is 0. 35 :m thick and you can use the values of mobilities and lifetimes given in the tables in the formula sheet to determine the electron diffusion length in the base. Verify that the short-region approximation is applicable to the base. Assume that the carrier recombinations in the neutral base an in the emitter-base depletion layer are zero. When this transistor is operating in the normal forward active mode with 0. volts forward bias across the emitter-base junction and a 2 volt reverse bias across the collector-base junction, what is the collector current density (JC) and the base current density (JB) ? You can assume that the depletion layer thicknesses are negligible at both junctions. Assume that bandgap narrowing for the emitter doping is 100 meV and the room temperature is 300K. (15 marks) 3b) What is the emitter efficiency of the transistor in 3a)? (5 marks) 3c) What do you understand by diffusion capacitance of a diode? Show (derive) that the diffusion capacitance of a p+ – n diode is approximately given by C Diffusion ?Qp Vt where Qp is the total injected minority hole charge on the n-side quasi-neutral=region and Vt is the thermal voltage (kT/q). Prove that the quantity Q p ? qAL p pn 0 e V Vt (10 marks) Page 2 4a) Consider an n-channel MOSFET and explain how the MOSFET operates using key band diagrams (along source, channel and drain and vertically along the metal gate, oxide and the channel region) and cross-sectional diagrams. State clearly wherefrom the channel electrons come and explain how this is controlled by the gate voltage. (10 marks) 4b) With reference to an n-p-n transistor, explain what is Early Effect and how it arises. Using an approximate sketch show the Early Voltage. Clearly illustrate your answer with the aid of carrier profiles and common-emitter output characteristics. (10 marks) 4c) Contrast the Temperature-dependence of Avalanche Breakdown Mechanism and Zener breakdown Mechanism. Illustrate your answer with sketches of Reverse bias I-V characteristics giving physical reasons. (10 marks) Page 3 E&CE 231 1/4 Formula Sheet C. R. Selvakumar E&CE 231 Formula Sheet 3 1 4? *2 g c (E) = 3 (2m n ) ( E ? E C )) 2 ; (E ? E c ) h 3 1 4? *2 2 g V (E) = 3 2m p ( E V ? E)) ; (E ? E V ) h 1 f FD (E) = (E-E F )/kT 1+ e p 0 = N V e (E V ? E F )/kT = n i e (Ei ?E F )/kT () n 0 p0 = n 2 i 3/2 ? 2? m* kT ? p N V = 2? ? 2 ? ? ?h ?  µn = q? c,n m* n and  µ p = q? c,p m* p ? max = ? qN A x p0 ? 0? r qN + x n0 D = ?0? r 1/2 x n0 ? 2? r ? 0 V0 ? NA =? ? q N D (N A + N D ) ? ? ? 2? r ? 0 V0 ? ND =? ? q N A (N A + N D ) ? ? 1/2 3/2 ? p 0 + N + = n0 + N A D + ? ?2 ? N D ? NA N + ? NA ? D ? + n2 ? + n0 = i 2 2 ? ? ? ? + ? N D x n0 = N A x p0 x p0 n 0 = N C e (E F ? EC )/ kT = n i e (E F ? E i )/kT ? 2? m* kT ? n N C = 2? ? 2 ?h ? ? kT ? n no p po ? kT ? N + N A ? D V0 = ln? ?= ln? ? q ? n2 ? q ? n2 ? i i p( x n0 ) = pn e qV / kT and ? pn = pn ( e qV / kT ? 1) 1/2 for n ? type , where ? c,n and ? ,p are mean time between collisions ? = qmn n + qm p p and r = 1/s dn ? dp ? ? ? J n = q? n µn ? + Dn ? ; J p = q ? p µ p ? ? D p ? ? ? dx ? dx ? D p Dn kT = = = 0. 0259 V at 300K  µ p  µn q n( ? x p0 ) = n p e qV / kT and ? n p = n p (e qV / kT ? 1) ? p( x n ) = ? pn e or ? p( x n ) = ? pn ( 0) e ? x p / Ln or ? n( x p ) = ? n p ( 0) e ?n( x p ) = ? n p e ? xn / L p ? x p / Ln ? Dn ? Dp ? I = qA? n p0 + p n0 ? (e qV/ kT ? 1) ? Lp ? Ln ? ? ? qN ? C j = A? Si d ? ? 2(V0 ? V ) ? 1/ 2 for p + ? n diffusion capacitance: C s = q 2 AL p kT p n0 e qV/kT for p + ? n n ? type regions of width, W: long base diode approx: I p = qAD p ? pn ( 0 )Lp short base diode approx: I p = qAD p ?p 1 dJ p ?n 1 dJ n =? + G ? Rp; = ? + G ? Rn ?t q dx ?t q dx Wm = L p = D p ? p and Ln = Dn ? n VT = d 2V d? ? ? 2= = where ? = q ( p ? n + N d ? N a ) dx ? 0 ? r dx dV 1 dE c 1 dE v 1 dE t ?= ? = = = dx q dx q dx q dx ? xn / L p 2? Si ( 2? F ) qN a for VG > Vth ? pn ( 0 ) W ? Si = ? 0 ? r ? Qd Qi + 2? F + ? ms ? , Ci Ci Q d = Q B = ? qN a x dm ,x dm = Wm ? Ci = Cox = 0 ox = i t ox d 1 2? ? Z? ? I D =  µ n Ci ? ? ? (VG ? VT )V D ? VD ? ? L? ? 2 ?  µ n Ci ? Z ? 2 I DSat = ? ? (V ? VT ) V Dsat = VG ? VT 2 ? L? G E&CE 231 2/4 Formula Sheet C. R. Selvakumar Eber-Moll Model (n-p-n transistor)I EBO (e VBE / Vt ? 1) â€Å"RIC I CBO (e VBC /Vt ? 1) â€Å"FIE ? VBE ? ? VBC ? I E = ? I ES ? e Vt ? 1? + ? R I CS ? e Vt ? 1? ? ? ? ? ? ? ? ? ? VBE ? ? VBC ? Vt ?e ? + I CS ? e Vt ? 1? I C = ? R I ES ? ? 1? ? ? ? ? ? ? E&CE 231 3/4 Formula Sheet C. R. Selvakumar Mobilities in Silicon N = doping density (cm ? 3 )  µ (N) =  µ min + Carrier type  µ0 N 1+ N ref :min :0 cm2 / (v. s) Nref cm-3 electron 88 1 251. 8 1. 26 x 1017 hole 54. 3 406. 97 2. 35 x 1017 Doping density Mobilities Lifetimes (J) as function of doping density N :n :p 1 1 = + cA N2 ? ? SRH 1015 1016 1017 1018 1019 1020 1322. 3 1218. 2 777. 3 262. 1 114. 1 91. 5 457. 96 437. 87 330. 87 43. 23 68. 77 56. 28 cm 2 v. sec cm 2 v. sec cm ? 3 Doping density N cm-3 Lifetime J sec For both electrons and holes 1015 1016 1017 1018 1019 1020 9. 8 x 10-6 8. 3 x 10-6 3. 3 x 10-6 4. 5 x 10-7 3. 3 x 10-8 8. 3 x 10-10 Obtained using the above formula for lifetime using: JSRH = 10-5/(1 + 5 x 1016/N) and CA = 10-31 cm6s-1 E&CE 231 4/4 Formula Sheet C. R. Selvakumar Properties of Silicon and Gallium Arsenide PROPERTY Si GaAs atoms or molecules/ cm3 5. 0 x 1022 4. 42 x 1022 atomic or molecular weight 28. 08 144. 63 density g/cm3 2. 33 5. 32 breakdown field V/cm 3 x 105 4 x 105 dielectric constant, gr 11. 8 13. 1 effective density of tates: Nc cm-3 Nv cm-3 Physical Constants ?1. 38Ãâ€"10 ? 23 J / K ? k ? ?8. 62Ãâ€"10 ? 5 eV / K ? ? 31 m0 9. 11Ãâ€"10 kg ?0 8. 85Ãâ€"10 ? 14 ? r (Si) 2. 8 x 1019 1. 04 x 1019 4. 7 x 1017 7. 0 x 1018 11. 8 ? r (SiO 2 ) 3. 9 h electron affinity, eV 4. 05 6. 62Ãâ€"10 c 3Ãâ€"10 q 1. 6Ãâ€"10 4. 07 energy gap, eV 1. 12 1. 43 intrinsic carrier conc. , ni cm-3 at T = 300K 1. 5 x 1010 1. 8 x 106 effective mass electrons holes m*n = 1. 1 m0 m*p = 0. 56 m0 m*n = 0. 067 m0 m*p = 0. 48 m0 intrinsic mobility @ 300K electrons cm2/Vs holes cm2/Vs 1350 480 8500 400 diffusivity @300K: electrons cm2/s holes cm2/s 35 12. 5 220 10 F / cm 10 ? 34 J ? s cm / s ? 19 C

HSC 037 Promote and Implement and Safety in Health and Social Care Essay

At our home the main aim is to ensure the effective operation of the health and safety system in the home and to ensure all staff work safely and report any hazards that they encounter. Our manager ensures that we have the following available to our clients, staff and they are displayed at the entrance to our home, they are: The Health & Safety Policy, QP-05 The home’s certificate of employers liability. Health and safety manual that includes the latest updated Health and safety policy, QP-05. The Fire Safety Policy, QP-03. The Smoking Policy, QP-12. COSHH Regulations, C4-020. Our main health and safety responsibility within the home is to ensure all our staff are suitably trained to safely and effectively carry out their duties. The manager is responsible for ensuring that all staff is aware of their role and responsibilities in relation to health and safety in the home. The manager should also ensure that individual staff working alone is risk assessed. This is risk assessment should follow the lone working policy, QP-25. Our manager should ensure that a suitable number of appropriately trained staff is available to deal with accidents and health emergencies. Staff will receive training in first aid, and there will be a suitable first aid box provided by the home, and appropriate records will be maintained in accordance with the homes first aid policy, QP-22. All staff is responsible for adhering to the requirements of the environmental policy, QP-30. All substances governed by the COSHH regulations should be stored safely and securely in the designated storage area which is kept locked. The manager should include health and safety training as part of the homes training plan to ensure all staff have received the appropriate level of training. Our health and safety training covers: induction training on-going training, which is specific to the work undertaken by staff on a daily basis. Refresher training to ensure that certification for time limited accreditation remains current and embraces updated practices. First aid. Food hygiene. Manual Handling. Fire safety. Only staff who are authorised by the manager may be asked to supervise new staff. The manager ensures that regular checks of the home are made to identify potential hazards and to confirm the continuation of safe working practices. The manager should carry out inspections at frequencies stated in the health and safety inspection schedule and ensure all areas identified are included in the health and safety inspection check list. Where the checks highlight the need for action to be taken, the manager should take the action necessary to remedy the situation or document the reasons why actions cannot be taken. The manager is responsible for maintaining a system of recording which records all reports of accidents, incidents and hazards. In some cases there is a legal obligation to use forms which must conform to the requirements of the health and safety executive. All staff should be aware that they are responsible for reporting any accident, incident or hazard to the senior member of staff on duty. The manager should be aware of the requirement to report to the care quality commission any event which is covered by regulations 16,17 and 18 of the care quality commission (registration) regulations 2009. Information regarding these notifications can be found in the CQC statutory notifications procedures, MA-22. The manager is responsible for ensuring that any accident, incident or hazard is reported to the relevant enforcing agency in the proper way. These agencies will include: The health and safety executive, RIDDOR notification form F2508,C4-085. Environmental health department, report of infectious or communicable disease form, C4-074. Care Quality Commission, using the relevant statutory notification form. As a minimum, the manager should ensure that the following records are maintained in the home to ensure legislative compliance and support the health and safety system in use at the home: An accident/incident report form A supply of RIDDOR notification form Senior staff communication book Significant events of importance book. Before any contractors begin work within the home, they must have been made aware that they must comply with all statutory health and safety requirements for the work being done. To ensure this happens, the manager should ensure that the contractor is included on the approved suppliers list, and has properly completed the approved supplier’s application. This will ensure that the necessary acknowledgements have been signed prior to work commencing. The home provides a living and leisure environment for older persons, some of whom are frail, and are especially vulnerable to a variety of risks. The manager or delegated responsible person is someone who has control or a degree of control over the premises and fire prevention systems and they will ensure that there is a fire management plan which will be implemented and maintained. The manager will ensure that risk assessments are carried out where required using the fire safety risk assessment form. Clients and all staff should all have a copy of this fire policy and the fire management plan, which forms part of the crisis management and service continuity plan. In addition, it is posted on notice boards around the home. The local fire authority will be consulted to see that they are satisfied with the safety measures that we have put in place and we will seek their advice on where improvements should & could be made.

Giant Beaver (Castoroides) - Facts and Figures

Giant Beaver (Castoroides) - Facts and Figures Name:Â  Giant Beaver; also known as Castoroides (Greek for of the beaver family); pronounced CASS-tore-OY-deez Habitat:Â  Woodlands of North America Historical Epoch:Â  Late Pliocene-Modern (3 million-10,000 years ago) Size and Weight:Â  About eight feet long and 200 pounds Diet:Â  Plants Distinguishing Characteristics: Large size; narrow tail; six-inch-long incisors About the Giant Beaver (Castoroides) It sounds like the punchline to a prehistoric joke: an eight-foot-long, 200-pound beaver with six-inch-long incisors, a narrow tail, and long, shaggy hair. But Castoroides, also known as the Giant Beaver, really existed, and it fit right in with the other plus-sized megafauna of its late Pliocene and Pleistocene ecosystem. Like modern beavers, the Giant Beaver probably led a partially aquatic lifestyleespecially since it was too big and bulky to move about sleekly on land, where it would have made a tasty meal for a hungry Saber-Tooth Tiger. (By the way, other than both being mammals, the Giant Beaver was completely unrelated to the beaver-like Castorocauda, which lived during the late Jurassic period.) The question everyone asks is: did the Giant Beaver build equally giant dams? Sadly, if it did, no evidence of these gigantic construction projects has been preserved into modern times, though some enthusiasts point to a four-foot-high dam in Ohio (which may well have been made by another animal, or be a natural formation). Like the other mammalian megafauna of the last Ice Age, the extinction of the Giant Beaver was hastened by the early human settlers of North America, who may have valued this shaggy beast for its fur as well as its meat.

Case Study Sample on Honeywell International and Social Media

Case Study Sample on Honeywell International and Social Media Honeywell international and social media The firm operates in diversified technology and manufacturing processes In this regard, it serves the global community with aviation products and services as well as building technologies and motor vehicle products. The presence of the firm is widespread across the globe. This necessitates development of a forum greater than contemporary mailing that is more interactive and value-added to allow sharing of knowledge and increased efficiency in achieving corporate values of ensuring customer satisfaction. The use of social media by companies that desire excelling is emerging in the contemporary world of business. Honeywell has significantly employed this tool in its adventure of becoming the leading firm in the engineering services provision. Ideally, the firm has developed a corporate I.T team that enhances collaboration and knowledge sharing among its over one hundred and twenty thousand global work force (Meetup, 1). The use of Facebook and twitter has significantly improved efficiency, enhanced productivity and improved sharing of knowledge (Meetup, 1). All these are significant facets of Honeywell’s corporate strategy. Ideally, social networks have become Honeywell’s corporate intranet enhancing improvement of flow of work as well as provision of a framework for alliance of ideas. It is necessary to note that Honeywell social networking is not limited to the two popular sites of Facebook and twitter. The firm has discovered the power of net. In this case, it has launched some more customized versions like SharePoint which is a discussion forum. Moreover, yammer which equivalent to twitter allows employees to informally collaborate in certain ideas. Rich Hoeg has been instrumental in guiding Honeywell in its adventure to significantly revolution the use of social media towards enhancement of achievement of corporate objectives. The versatile metabolism of the use of web is credited to Rich Hoeg. Mr. Hoeg had initiated Honeywell computer training two decades ago which converted into internal and external web services in the 1990s (Meetup, 1). The contemporary development at Honeywell thanks to a completely developed e-learning and implicit library threshold is knowledge sharing. The basis and development of Honeywell is enhancement of practicability of in-house engineering blogs, labeling/social net engines as well as knowledge podcasts (Meetup, 1). This is to allow knowledge management and content development that allows collaboration of versatile knowledge among a wide spectrum of workforce spread across the globe. Once this is developed, solutions and innovations will drive Honeywell into the helm of corporate success. The baseline of the revolution of social networking is that harnessing the thinking and knowledge of this persons connected by internet is a very powerful tool which imagination may only quantify its potential in developing solutions. In conclusion, Honeywell international is a case study of how social networking may efficiently be customized into more formal uses rather than the traditional forums of interacting socially. Ideally, Honeywell has successfully used social networking sites including Facebook, Twitter and blogs to successfully allow knowledge collaboration among its over one hundred and twenty thousand employees spread across the globe. This has increased the firm’s efficiency, led to enhanced productivity and improved sharing of technical knowledge. This makes Honeywell a mega piece in offering just-in-time solutions to customers. It is mind blogging to understand the synergy that Honeywell has generated by revolutionizing social networking into systems that formally enhance knowledge sharing to give customers solutions. The future at Honeywell is developing internal engineering blogs and knowledge podcasts. Finally, the sky is the limit as to the value that Honeywell will derive both financia lly and market share and company goodwill from revolution of social networking system. Our custom essay writing service can provide you with a custom written essay on any topic and discipline. All essays are written by professional writers.

Quotes From Controversial Book The Giver

Quotes From Controversial Book 'The Giver' The Giver is a middle-grade dystopian novel by Lois Lowry. Its about Jonas, who becomes the Receiver of Memories and then begins to understand the deepest secrets of his society. The book teaches a valuable lesson on the importance of individuality, emotions, and having a connection with others. It is often part of a middle school curriculum. On Aging Chapter 1 â€Å"After Twelve, age isnt important. Most of us even lose track of how old we are as time passes, though information is in the Hall of Open Records. Chapter 2 Whats important is the preparation for adult life, and the training youll receive in your Assignment. On Memories Chapter 23 It was not a grasping of thin and burdensome recollection; this was different. This was something that he could keep. It was a memory of his own.   Chapter 18 Memories are forever. Chapter 10 Simply stated, although its not really simple at all, my job is to transmit to you all the memories I have within me. Memories of the past. Chapter 17 With his new, heightened feelings, he was overwhelmed by sadness at the way the others had laughed and shouted, playing at war. But he knew that they could not understand why, without the memories. He felt such love for Asher and for Fiona. But they could not feel it back, without the memories. And he could not give them those. On Courage Chapter 8 You will be faced, now, with  pain  of a magnitude that none of us here can comprehend because it is beyond our experience. The Receiver himself was not able to describe it, only to remind us that you would be faced with it, that you would need immense courage. But when he looked out across the crowd, the sea of faces, the thing happened again. The thing that had happened with the apple. They changed. He blinked, and it was gone. His shoulder straightened slightly.  Briefly,  he felt a tiny sliver of sureness for the first time. On Fitting In Chapter 1 For a contributing citizen to be released from the community was a final decision, a terrible punishment, an overwhelming statement of failure. Chapter 3 No one mentioned such things; it was not a rule, but was considered rude to call attention to things that were unsettling or different about individuals. Chapter 6 How could someone not fit in? The community was so meticulously ordered, the choices so carefully made. Chapter 9 He was so completely, so thoroughly accustomed to courtesy within the community that the thought of asking another citizen an intimate question, of calling someones attention to an area of awkwardness, was unnerving. On Happiness and Satisfaction Chapter 11 Now he became aware of an entirely new sensation: pinpricks? No, because they were soft and without pain. Tiny, cold, feather-like feelings peppered his body and face. He put out his tongue again and caught one of the dots of cold upon it. It disappeared from his awareness instantly, but he caught another, and another. The sensation made him smile. He was free to enjoy the breathless glee that overwhelmed him: the speed, the clear cold air, the total silence, the feeling of balance and excitement and peace. Chapter 4 He liked the feeling of safety here in this warm and quiet room; he liked the expression of trust on the womans face as she lay in the water unprotected, exposed, and free. Chapter 13 They were satisfied with their lives, which had none of the  vibrance  his own was taking on. And he was angry at himself, that he could not change that for them. Sometimes I wish theyd ask for my wisdom more often - there are so many things I could tell them; things I wish they would change. But they dont want change. Life here is so orderly, so predictable - so painless. Its what theyve chosen. Chapter 12 Our people made that choice, the choice to go to Sameness. Before my time, before the previous time, back and back and back. We relinquished color when we relinquished sunshine and did away with difference. We gained control of many things. But we had to let go of others. On Grief and Pain Chapter 13 Now he saw another elephant emerge from the place where it had stood hidden in the trees. Very slowly it walked to the mutilated body and looked down. With its sinuous trunk, it struck the huge corpse; then it reached up, broke some leafy branches with a snap, and draped them over the mass of torn thick flesh. Finally, it tilted its massive head, raised its trunk, and roared into the empty landscape. It was a sound of rage and grief and it seemed never to end. Chapter 14 The sled hit a bump in the hill and Jonas was jarred loose and thrown violently into the air. He fell with his leg twisted under  him and could hear the crack of bone. His face scraped along jagged edges of  ice...Then, the first wave of pain. He gasped. It was as if a hatchet lay lodged in his leg, slicing through each nerve with a hot blade. In his agony, he perceived the word fire and felt flames licking at the torn bone and flesh. Chapter 15 Dirt streaked the boys face and his matted blond hair. He lay sprawled, his gray uniform glistening with wet, fresh blood. The colors of the carnage were grotesquely bright: the crimson wetness on the rough and dusty fabric, the ripped shred of grass, startlingly green, in the boys yellow hair. Chapter 19 Jonas felt a ripping sensation inside himself, the feeling of terrible pain clawing its way forward to emerge in a cry. On Wonder Chapter 9 What if others - adults - had, upon becoming Twelves, received in their instructions the same terrifying sentence? What if they had all been instructed: You may lie? Chapter 12 Always in the dream, it seemed as if there were a destination: a something - he could not grasp what - that lay beyond the place where the thickness of snow brought the sled to a stop. He was left, upon awakening, with the feeling that he wanted, even somehow needed, to reach the something that waited in the distance. The feeling that it was good. That it was welcoming. That it was significant. But he did not know how to get there. Chapter 13 He wondered what lay in the far distance where he had never gone. The land didnt end beyond  those nearby communities. Were there hills Elsewhere? Were there vast wind-torn areas like the place he had seen in memory, the place where the elephants died? Chapter 14 Was there someone there, waiting, who would receive the tiny released twin? Would it grow up Elsewhere, not knowing, ever, that in this community lived a being who looked exactly the same? For a moment, he felt a tiny, fluttering hope that he knew was quite foolish. He hoped that it would be Larissa, waiting. Larissa, the  old woman  he had bathed. Jonas began to remember the wonderful sail that The Giver had given him not long before: a bright, breezy day on a clear turquoise lake, and above him the white sail of the boat billowing as he moved along in the brisk wind. Chapter 23 For the first time, he heard something that he knew to be music. He heard people singing. Behind him, across vast distances of space and time, from the place he had left, he thought he heard music, too. But perhaps, it was only an echo. On Choice, Change, and Consequences Chapter 20 Its the way they live. Its the life that was created for them. Its the same life that you would  have  if you had not been chosen as my successor. Chapter 7 He hunched his shoulders and tried to make himself smaller in the seat. He wanted to disappear, to fade away, not to exist. He didnt dare to turn and find his parents in the crowd. He couldnt bear to see their faces darkened with shame. Jonas bowed his head and searched through his mind. What had he done wrong? Chapter 9 There was just a moment when things werent quite the same, werent quite as they had always been through the long friendship. Chapter 16 Things could change, Gabe. Things could be different. I dont know how, but there must be some way for things to be different. There could be colors. And grandparents. And everybody would have memories. You know about memories. Chapter 22 If he had stayed in the community, he would not be. It was as simple as that. Once he had yearned for choice. Then, when he has had a choice, he had made the wrong one: the choice to leave. And now he was starving.

Discussion on NSA Security Essay Example | Topics and Well Written Essays - 250 words

Discussion on NSA Security - Essay Example According to Hypponen, basically, each international internet user is under US surveillance. Hypponen is worried about our future communication and data which he fears will be stored in the US data center in Utah; the world’s largest. Hypponen laments how the US government is infringing on individual privacy and making everything insecure by infiltrating standardization bodies to purposely sabotage encryption algorithms. The NSA by use of PRISM which is a particular NSA database and an aspect of the entire NSA surveillance endeavor, details collection program for data collection from various service providers. Thus clearly, the world is no longer a safe place to communicate freely and the US has completely infiltrated people’s privacy under the guise of fighting terrorism. Although the US is legally obligated to monitor foreigners as well as foreigners’ data connections when they end up or pass through United States, you realize that 96% of people in the planet are foreigners. This means that almost virtually everybody is being watched by the US. This i s not only morally wrong, but also rude and should make everybody angry. Hypponen proposes that the world unite together through either political pressure or by seeking alternative services, so as to build together open, free as well as secure

The Cell Cycle Essay Example | Topics and Well Written Essays - 500 words - 20

The Cell Cycle - Essay Example Meiosis is a form of cell division that results in the formation of haploid gametes. In meiosis I, the homologous chromosomes are separated. The first phase is prophase I where the chromosome condenses and pairs to recombine. The second is metaphase I that involves attachment of chromosomes to the spindle fibers and aligns with the call center. At anaphase I, the chromosomes migrate to opposite poles while spindle fibers shorten. The last phase is telophase I where there is the formation of the nuclear membrane.However, meiosis II involves separation of the chromosomes to form two chromatids. The phases in meiosis II include prophase II, where there is dissolving of the nuclear membrane, condensing of chromosomes and the formation of spindle fibers. In Metaphase II, chromosomes align at the center of attachment of spindle fibers. Anaphase II follows; chromatids migrate to opposite poles while spindle fibers shorten. The last phase is telophase II where there is the formation of the n uclear membrane. Finally, the cytokinesis occurs resulting in the formation of four haploid cells.In prophase I, anaphase I and anaphase II there is crossing over that lead to the formation of four unique chromatids hence increasing genetic variation. Crossing over is vital in the evolution since it brings emergence of species that are more adapted and resistant in the environment. The two-fold cost of sexual reproduction refers to where members must produce both male and female sexes during reproduction.

Consumers goods Essay Example | Topics and Well Written Essays - 3000 words

Consumers goods - Essay Example Based on the Annual Report of GKN (2005) the company is using the Option Pricing Model as its model in calculating the target price. First, it was reported that the Earnings per Share (EPS) was computed at 7.7 in 2005. The EPS is actually the net profit after tax divided by the outstanding shares of the company On the other hand, adjustments made in the financial report showed substantial reports. The value of EPS was subsequently changed to 22.1 after the adjustments were made. This is good news for the investors because the each share earned an additional 14.4 Sterling Pounds. According to the report, the change was made because of the impact of the restructuring and impairment charges, profits on the sale of business, and charges in the fair value of derivative financial instruments. The nature of the business suggests that the Discounted Cash Flow Model is the best model to be used in determining target prices.Premier Foods PLC uses Discounted Cash Flow as the model for computing target prices. Basically, all forecasted values provided by the firm emanate from the aforementioned model. In 2005, the actual EPS of the company is valued at 34. This is further divided into continuing and discontinuing EPS. The former accumulated an EPS of 15 and the latter contributed 19 earnings for share. The figures, however, were changed because of IFRS rules. The EPS of the company was reduced to 33.7 with the continuing and discontinuing registering 14.9 and 18.8 EPS respectively. ... Several changes were observed in the manner in which non-operating activities were reported. The decrease was made since most non-operating activities were excluded from the computation of the items needed to value the EPS of the company. Other changes in the business because of the IFRS have impacted the valuation of several elements. Still, the model used by the company is effective because Discounted Cash Flow value considers the effect of inflation in the computation of the future values in the financial statement. Using the Option Pricing Model is prevalent among firms with diverse operations. The target prices computations of Scottish and Newcastle PLC suggest that the Option Pricing Model was used. The Annual Report (2005) of the company has underlined several changes after the IFRS rules were mandated. Specifically, the effects of the changed were observed in the inclusion of cash and cash equivalents. In the EPS, the use of IFRS as guide for accounting has produced significant changes. Before the approval of IFRS use, the EPS was only 40. Using the guidelines provided by IFRS, the EPS of the firm ballooned to 200. Although other adjustments not related to IFRS were made, the value added after the use of IFRS was immense. Indeed, there is a possibility that the values were overstated. Hence, using the Discounted Cash Flow Model will provide an accurate view of target prices in the future operations. The group Annual Report (2005) of British American Tobacco has pointed that the model used for valuation of target prices is the Historical Cost convention. This supports the claim of financial analysts of the effect of inflation rates in the values reflected in the financial statements. According to the report, the company recorded an EPS of

Napolean's Defeat Term Paper Example | Topics and Well Written Essays - 1500 words

Napolean's Defeat - Term Paper Example The Aim of his reforms was to consolidate whatever was good in the Revolution and to conciliate those who had suffered at its hands without compromising the essential principle of Equality, Liberty and Fraternity. His conciliation of the Church and migrs did not restore their pre-Revolution privileges or power. Napoleon as a emperor of France and 'Son of the Revolutionary' he launched a new offensive against the absolute monarchies of Europe with the main purpose of spreading the Revolutionary principles to other countries and to glorify himself and France. There was a fundamental difference between the character of the wars waged by Revolutionary France from 1792 to 1802 and the Napoleonic Wars from 1803 onwards. The former were wars of liberation; they carried the message of the Revolution to the down-trodden people of foreign countries; they roused in them hopes of deliverance from the tyranny of absolutism, and hence wherever the French soldier went they were regarded by masses as helpers, friends and saviors of the underprivileged classes. But the Napoleonic wars did not rouse any such popular fervor. They were waged by an Imperial Despot to achieve glory and therefore instead of rousing sympathy, in the long run, they roused antagonism. The national self respect of the countries invaded by Napoleon was roused against him and was, in the end, one of the most important causes of his downfall. Napoleon trampled on the national sentiments of vanquished people by placing his brothers and sisters on their thrones. He was no longer regarded as a deliverer from the tyranny of absolute rulers; he was hated as a usurper and tyrant. Causes of Downfall of Napoleon Napoleon, 'the man of Destiny' and the 'son of the Revolution' had a phenomenal rise. The forces of the Revolution threw him into the limelight from the comparative oblivion, and once he had grasped the public gaze in dispersing the Paris mob with great alacrity and success in 1795, he continued to climb higher and higher till he became the Emperor of France in 1804. He so dominated the French and European stage that the period of his ascendancy - the years 1799-1815 -- is called the 'Napoleonic era.' His hold on Europe during this period was complete and the destiny of Europe depended on his whims and fancies. Napoleon was a genius both an administrator and as a general. His finest qualities of leadership and generalship always came to forefront in time of adversity. He was a master of strategy and brilliant campaigning. He was essentially a soldier and his inherent love of conquest and domination in the long run alienated the whole Europe and roused bitter national animosity against which he could do nothing. The whole of Europe was arrayed against him and finally was responsible for his overthrow. 1. Military Causes (i) Enormous losses in the Peninsular War, the Russian Campaign and the War

Project Management Essay Example | Topics and Well Written Essays - 2500 words - 3

Project Management - Essay Example Earliest Finish Time (EFT) = Earliest Start Time (EST) + Duration Latest Start Time (LST) is calculated by adding float to LST of the critical activity in the group. Latest Start Time (LFT) = Latest Start Time (EST) of critical activity + total float Latest Finish Time (LFT) is calculated by adding duration to LST of the activity. Latest Finish Time (LFT) = Latest Start Time (LST) + Duration Total Float is calculated by subtracting The Earliest Start time (EST) and duration from Latest Finish Time (LFT). Total float = LFT - EST - duration 2) Explain how you determined the project duration and the critical path In order to calculate the project duration, we first need to identify critical path. A critical path is the one that holds series of dependable activities which as whole gives the longest time to complete the project and these activities within critical path are called critical activities. In other words, it is series of activities with â€Å"Zero total Float† (Newell, 2 005). ... Time Required Immediate Predecessor Activities EST EFT LFT LST (days) A 4 - 0 4 4 0 B 5 A 4 9 12 7 C 4 A 4 8 12 8 D 8 A 4 12 12 4 E 6 A 4 10 12 6 F 2 A 4 6 12 10 G 13 B,C,D,E,F 12 25 25 12 H 8 G 25 33 33 25 I 7 H 33 40 40 33 J 6 H 33 39 40 34 K 8 I,J 40 48 48 40 L 13 K 48 61 61 48 M 9 L 61 70 70 61 N 4 M 70 74 74 70 O 5 B 9 14 86 81 P 12 N 74 86 86 74 Q 2 O,P 86 88 88 86 PROJECT DURACTION 88 DAYS    Critical Path 3) If the project starts on the Monday 7 January 2013, what is the earliest date it can be completed using a 5 working day week? Assume no holidays. If the project starts on the Monday 7 January 2013 On the basis of 88 days of total project duration, the earliest date when the project can be completed is the 8th of May, 2013. The date is calculated by counting 88 days from 7 January, 2013 excluding Saturday and Sunday. 4) If the following happened what would be the effect on the duration of the whole project? a) Activity B is delayed 1 day. Activity B is not a critical act ivity and has total float of 3 days, 1 day delay during activity B will not affect the duration of the whole project. b) Activity P is delayed 1 day. As activity P it is a critical activity, a 1 day delay during activity P will increase the duration of the whole project by 1 day, thereby making it to 89 days. c) Activity O is delayed 2 day. Activity B is not a critical activity and has a total float of 72 days, 1 day delay during activity B will not affect the duration of the whole project. 5) Limitations of network diagrams The main limitation of a Network diagram is: do not clearly show time line for a project, it is difficult to update, do not lead to easy distribution and the tools can be expensive to acquire. TASK 2 Abstract The project management main goal is delivering a project

Napolean's Defeat Term Paper Example | Topics and Well Written Essays - 1500 words

Napolean's Defeat - Term Paper Example The Aim of his reforms was to consolidate whatever was good in the Revolution and to conciliate those who had suffered at its hands without compromising the essential principle of Equality, Liberty and Fraternity. His conciliation of the Church and migrs did not restore their pre-Revolution privileges or power. Napoleon as a emperor of France and 'Son of the Revolutionary' he launched a new offensive against the absolute monarchies of Europe with the main purpose of spreading the Revolutionary principles to other countries and to glorify himself and France. There was a fundamental difference between the character of the wars waged by Revolutionary France from 1792 to 1802 and the Napoleonic Wars from 1803 onwards. The former were wars of liberation; they carried the message of the Revolution to the down-trodden people of foreign countries; they roused in them hopes of deliverance from the tyranny of absolutism, and hence wherever the French soldier went they were regarded by masses as helpers, friends and saviors of the underprivileged classes. But the Napoleonic wars did not rouse any such popular fervor. They were waged by an Imperial Despot to achieve glory and therefore instead of rousing sympathy, in the long run, they roused antagonism. The national self respect of the countries invaded by Napoleon was roused against him and was, in the end, one of the most important causes of his downfall. Napoleon trampled on the national sentiments of vanquished people by placing his brothers and sisters on their thrones. He was no longer regarded as a deliverer from the tyranny of absolute rulers; he was hated as a usurper and tyrant. Causes of Downfall of Napoleon Napoleon, 'the man of Destiny' and the 'son of the Revolution' had a phenomenal rise. The forces of the Revolution threw him into the limelight from the comparative oblivion, and once he had grasped the public gaze in dispersing the Paris mob with great alacrity and success in 1795, he continued to climb higher and higher till he became the Emperor of France in 1804. He so dominated the French and European stage that the period of his ascendancy - the years 1799-1815 -- is called the 'Napoleonic era.' His hold on Europe during this period was complete and the destiny of Europe depended on his whims and fancies. Napoleon was a genius both an administrator and as a general. His finest qualities of leadership and generalship always came to forefront in time of adversity. He was a master of strategy and brilliant campaigning. He was essentially a soldier and his inherent love of conquest and domination in the long run alienated the whole Europe and roused bitter national animosity against which he could do nothing. The whole of Europe was arrayed against him and finally was responsible for his overthrow. 1. Military Causes (i) Enormous losses in the Peninsular War, the Russian Campaign and the War

Open Japan to the World Essay Example | Topics and Well Written Essays - 1000 words

Open Japan to the World - Essay Example Japan opened its ports and the Western countries slowly expanded their influence to trade and settlement in the treaty ports, The Japanese government underlines that the opening of the country did not mean any change in its policy and strategic goals. Japan was opened for contact with the rest of the world, including Christianity; missionary work was started in the open ports; but Christianity was still proscribed as an evil religion. As Japan emerged from more than two centuries of seclusion, feelings of past interactions with the West mingled with new information and feelings (Konishi 2007). For Japan, the past proposed a unique model for interpreting what was happening with the nation, and new developments to a certain extent changed traditional values. In 1856 Consul-General Townsend Harris was sent to Japan to negotiate a treaty of commerce, which was signed two years later (Miyoshi 82). In 1860 a Bakufu envoy was despatched to America to exchange ratifications of the treaty. It was the first time that a Japanese ship crossed the Pacific. At the same time with the conclusion of a treaty with the United States, Japan negotiated commercial treaties of commerce with Holland, Russia, England and France. Japan's trade with the West was officially started. It is possible to sayt hat the Bakufu was forced to open the state to foreign intercourse signified, in the eyes of the people in general, a lowering of its prestige. As a result anti-foreign movements were launched here and there, movements which finally came to be seen on as a means of attacking the Bakufu. The Bakufu was no longer powerful enough to rise the state out of the collapse into which it had fallen; all it could do was to make the best of the bad bargain by taking makeshift measures. This helped to speed up the downfall of the Bakufu. "To return to the initial question, the Embassy men were all too eager to accept the American welcome as genuine. As they once wanted to believe that Japan was China 's equal, so they now wanted to regard Japan and the United States as on a similar footing" (Miyoshi 64). For more than two decades the centralized power of the Tokugawa shogunate tied to establish and maintain an unprecedented political and social stability in the country. In order to maintain political stability a policy of social stability was introduced. All aspects of social life were managed, even minute details concerning food and clothing. As the Western countries began to search for new contact with Japan in the early nineteenth century, the great danger of trade and Christian propagation was again used as a powerful tool against such transformations. Considering that the Western nations in the mid- nineteenth century were quickly expanding their impact in the Far East through military force, trade, colonization, and Christian propagation, the Japanese doubt was reasonable. For instance, the Opium War in 1842 and the forced opening of China especially alarmed the shogunate and stimulated the improvement of military defense in Japan (Murase 273). In spite of this basic principle of noninterference, which was officially adopted in the following period if time, the presence of the Western countries in Japan was accompanied by consistent and even embarrassing demonstrations of their concern for the cause of Christianity (Konishi 2007). The following description of

The Meaning of Suffering Essay Example for Free

The Meaning of Suffering Essay We must never forget that we may also find meaning in life even when confronted with a hopeless situation, when facing a fate that cannot be changed. For what then matters is to bear witness to the uniquely human potential at its best, which is to transform a personal tragedy into triumph, to turn ones predicament into a human achievement. When we are no longer able to change a situationjust think of an incurable disease such as inoperable cancerwe are challenged to change ourselves. Let me cite a clear cut example: Once, an elderly general practitioner consulted me because of severe depression. He could not overcome the loss of his wife who had died two years before and whom he had loved above all else. Now, how could I help him? What should I tell him? Well, I refrained from telling him anything but instead confronted him with the question, â€Å"What would have happened, Doctor, if you had died first, and your wife would have had to survive you? â€Å"Oh,† he said, â€Å"for her this would have been terrible; how she would have suffered! † Whereupon I replied, â€Å"You see, Doctor, such a suffering has been spared her, and it was you who have spared her this suffering – to be sure, at the price that now you have to mourn her. † He said no word but shook my hand and calmly left my office. In some way, suffering ceases to be suffering at the moment it finds a meaning, such as the meaning of sacrifice. Of course this was no therapy in the proper sense since, first, his despair was no disease; and second, I could not change his fate; I could not revive his wife. But in that moment I did succeed in changing his attitude toward his unalterable fate inasmuch as from that time on he could at least see a meaning in his suffering. It is one of the basic tenets of logotherepy that man’s main concern is not to gain pleasure or to avoid pain but rather to see a meaning in his life. That is why man is even ready to suffer, on the condition, to be sure, that his suffering has a meaning†¦ There are situations in which one is cut off from the opportunity to do ones work or enjoy ones life; but what can never be ruled out is the unavoidability of suffering. In accepting this challenge to suffer bravely, life has a meaning up to the last moment, and it retains this meaning literally to the end. In other words, lifes meaning is an unconditional one, for it even includes the potential meaning of unavoidable suffering Victor Frankl in Mans Search for Meaning (pg 112-115)

Molecular cloning

Molecular cloning Abstract Molecular cloning is a method to produce quantities of a specific DNA segment. It contains an abundance of techniques including DNA transfer, DNA recombination, DNA sequencing and so on. Though this practical, restriction maps were draw for plasmid pMA and pMB by doing single and double digest, a pMB fragment digested with PstI was inserted to plasmid pUC19 and then transferred to host cells to have proliferation and expression, and the sequence of PstI digested pMB fragment was analysed. 1. Introduction Recombinant DNA molecules are molecules containing DNA sequences derived from more than one source. In molecular cloning, by using recombinant DNA, a specific combination of genes can be put into a carrier, and then can be proliferated and expressed in a recipient cell. In medicine, by making use of molecular cloning, scientists have successfully constructed engineering strains of insulin, growth hormone of human, cattle and chicken, human interferon, erythropoietin, antigen of hepatitis B virus and antigen of foot-and-mouth disease virus, and conducted a large-scale production by fermentation industry. In gene therapy, there is a possibility of reversing cancer cells to normal cells through genetic engineering, for example, mouse tumor cells caused by SV40 virus can reverse to normal cells at high temperature. Many chemical reagents such as acrylic acid, ethylene glycol, methanol, ethylene oxide and salicylic acid can possibly be produced by making use of molecular cloning. In environmental protection, people transfer genes of one microorganism into another through genetic manipulation to create new strains that are more capable of degrading harmful substances, in order to break down toxic substances in industrial waste.[1,2] Blue-White selection is a method for screening recombinant DNA. Vectors containing a ÃŽ ²-galactosidase gene (lacZ) can have a complementation (ÃŽ ±-complementation) with E.coli strain to form a functional ÃŽ ²-galactosidase enzyme. Neither vectors, nor host cells have the enzyme activity. The lacZ gene has an internal multiple cloning sites (MCS) which can be cut by different restriction enzymes. Therefore, when a gene fragment is inserted in the vector, the lacZ gene will be disrupted and cannot form active ÃŽ ²-galactosidase enzyme. X-gal can be metabolized by ÃŽ ²-galactosidase to gain a blue product. Therefore, in the presence of X-gal, DNA with no insert gene can display a blue colour, while recombinant DNA, which have no enzyme function, display a white colour.[3] The aim of the practical is to draw restriction maps of simple plasmids for recombinant DNA, do basic molecular cloning and sequence a DNA fragment. 2. Results Table 1: Antibiotic resistances of 5 E. coli strains LB/Ampicillin LB/Tetracycline LB/Kanamycin DH5a No growth No growth No growth pUC19 Grown No growth No growth pMA Grown Grown No growth pMB No growth Grown Grown XL1-Blue No growth Grown No growth DH5a: E. coli strain DH5a; pUC19: E. coli strain DH5a containing plasmid pUC19; pMA: E. coli strain DH5a containing plasmid pMA; pMB: E. coli strain DH5a containing plasmid pMB; XL1-Blue: E. coli strain XL1-Blue. NO. DNA Enzyme 1 pMA Bam HI 2 pMA XhoI 3 pMA PstI 4 pMA EcoRI 5 pMB Bam HI 6 pMB XhoI 7 pMB PstI 8 pMB EcoRI 9 Lambda marker 10 X174 marker NO. DNA Enzymes 1 pMA EcoRI, Bam HI 2 pMA EcoRI, PstI 3 pMA EcoRI, XhoI 4 pMA Bam HI, PstI 5 pMA Bam HI, XhoI 6 pMA PstI, XhoI 7 pMB EcoRI, Bam HI 8 pMB EcoRI, PstI 9 pMB EcoRI, XhoI 10 pMB Bam HI, PstI 11 pMB Bam HI, XhoI 12 pMB PstI, XhoI 13 Lambda marker 14 X174 marker 1 Lambda marker 2 Blue colony digested with PstI 3-7 White colonies digested with PstI 8 X174 marker gagtantagttcgccngttaatagtttgcgcaacgttgttgccattgctgcaggggggggggggaaagccacgttgtgtctcaaaatctctgatgttacattgcacaagataaaaatatatcatcatgaacaataaaactgtctgcttacataaacagtaatacaaggggtgttatgagccatattcaacgggaaacgtcttgctcgaggccgcgattaaattccaacatggatgctgatttatatgggtataaatgggctcgcgataatgtcgggcaatcaggtgcgacaatctatcgattgtatgggaagcccgatgcgccagagttgtttctgaaacatggcaaaggtagcgttgccaatgatgttacagatgagatggtcagactaaactggctgacggaatttatgcctcttccgaccatcaagcattttatccgtactcctgatgatgcatggttactcaccactgcgatccccgggaaaacagcattccaggtattagaagaatatcctgattcaggtgaaaatattgttgatgcgctggcagtgttcctgcgccggttgcattcgattcctgtttgtaattgtccttttaacagcgatcgcgtatttcgtctcgctcaggcgcaatcacgaatgaataacggtttggttgatgcgagtgattttgatgacgagcgtaatggctggcctgttgaacaagtctggaaagaaatgcataagcttttgccattctcaccggattcagtcgtcactcatggtgatttctcacttgatgaggttatttttgacgaggggaaattaataggttgtattgatgttggacgagtcggaatcgcagaccgataccaggatcttgctttttcaaaaatatggtattgataatcctgatatgaataaattgcagtttcatttgatgctcgatgagtttttttaatgagaattggttaattggttgtaacactggcagagcattacgctga cttgacgggacggcggctttgttgaataaatcgaacttttgctgagttgaaggatcagatcacgcatcttcccgacaacgcagaccgttccgtggcaaagcaaaagttcaaaatcaccaactggtccacctacaacaaagctctcatcaaccgtggctccctcactttctggctggatgatggggcgattcaggcctcaacgactgagtatggaccttcttcacgaggcagacctcagcgccccccccccccctgcaggca Enzyme No. of cuts Position of sites (bp) Recognition sequence PstI 2 52, 1243 ctgca/g XhoI 1 204 c/tcgag E X Stop F A X Stop _ F A Q R C C H C C R G G G E S H V V S Q N L Stop C Y I A Q D K N I S S Stop T I K L S A Y I N S N T R G V M S H I Q R E T S C S R P R L N S N M D A D L Y G Y K W A R D N V G Q S G A T I Y R L Y G K P D A P E L F L K H G K G S V A N D V T D E M V R L N W L T E F M P L P T I K H F I R T P D D A W L L T T A I P G K T A F Q V L E E Y P D S G E N I V D A L A V F L R R L H S I P V C N C P F N S D R V F R L A Q A Q S R M N N G L V D A S D F D D E R N G W P V E Q V W K E M H K L L P F S P D S V V T H G D F S L D E V I F D E G K L I G C I D V G R V G I A D R Y Q D L A F S K I W Y Stop _ S Stop Y E Stop I A V S F D A R Stop V F L M R I G Stop L V V T L A E H Y A D L T G R R L C Stop I N R T F A E L K D Q I T H L P D N A D R S V A K Q K F K I T N W S T Y N K A L I N R G S L T F W L D D G A I Q A S T T E Y G P S S R G R P Q R P P P P C R Aminoglycoside 3-phosphotransferase, putative 3. Discussion 3.1 Antibiotics resistances Seen from table 1, DH5a has no resistance to any of the three bacteria, pUC19 is resistant to ampicillin, pMA is resistant to ampicillin and tetracycline, pMB is resistant to tetracycline and Kanamycin, and XL1-Blue is resistant to tetracycline. Plasmid pUC19, pMA and pMB, which were used in the cloning procedure, had different antibiotic resistances, while the bacterial host, DH5a, have no antibiotic resistance. Therefore, cells containing recombinant DNA could be selected by growing host cells in presence of antibiotic. Even when different plasmids are contained in the host cells, this method can be used. For example, tetracycline can be used to select cells containing only pMA from a mixture of cells containing pMA and pUC19. 3.2 Restriction maps and relationship of pMA and pMB From the single digest (1), pMA could be cut by Bam HI, PstI and EcoRI, and each enzyme could cut pMA once. However, pMA could not be cut by XhoI. pMB could be cut by Bam HI, XhoI and EcoRI once, and cut by PstI twice. Therefore, pMA has three restriction enzyme sites, while pMB has five. From the double digest (2), the results were consistent with single digest, and the length of each fragment could be obtained. Restriction maps (3) were drawn based on the single and double digests. From the restriction maps, the fragments in pMA and pMB, cutting by Bam HI and EcoRI, have the same base pairs (430bp). The fragment cutting by EcoRI and PstI in pMA has the same base pair (720bp) with one of the fragments cutting by EcoRI and PstI in pMB. The fragment cutting by Bam HI and PstI in pMA has the same base pair (1150bp) with one of the fragments cutting by EcoRI and PstI in pMB. The longer fragment in pMB cutting by PstI was round about 3780bp, which was very close to the length of pMA (3800bp). As all the lengths of fragments were roughly obtained and were not accurate. Therefore, we can assume that pMA is a part of pMB. pMB can be cut by PstI. If the longer fragment is re-circled, it will have the same base pairs and restriction enzyme sites (PstI, EcoRI and Bam HI) with pMA. The XhoI restriction site on pMB is between the two restriction sites of PstI, therefore, the longer fragment cannot be cut by XhoI, which is consistent with pMA. Seen from the antibody resistances, pMA is resistant to ampicillin and tetracycline, pMB is resistant to tetracycline and Kanamycin. This might because the tetracycline resistant gene is in pMA, which is a part of pMB. And kanamycin resistant gene is in the PstI fragment of pMB, which pMA does not have. For the ampicillin resistant gene, it might be located around the PstI restriction site in pMA, which will be insertion inactive when insert the PstI fragment to pMA to make it become pMB, therefore, pMB does not have ampicillin resistance. This hypothesis can be proved by sequencing pMA and pMB fragment cutting by PstI, which was not included in this experiment. 3.3 Sub cloning recombinant clones In 4, the blue colony had only one band, which meant that there was only one PstI restriction site in the plasmid. This was consistent with pUC19 that did not have an insert fragment. Four of the white colonies had two bands each, including one band located around 1200bp. These were the recombinant DNA, with the pMB fragment digested with PstI. One white colony (No. 7) did not have a band located around 1200bp, but a fragment shorter than that. This was also a recombinant DNA, with other fragment rather than PstI fragment. This might be caused by some impurities through the procedure. 3.4 Sequence analysis The sequence of the PstI fragment in pMB was obtained by overlapping two fragments (forward and reverse). Seen from 5, there are two PstI restriction sites (ctgca/g) and one XhoI restriction site (c/tcgag), and the XhoI restriction site is between the two PstI restriction sites. Therefore, if the fragment is digested with PstI and XhoI, two fragments (152bp, 1039bp). This is roughly consistent with the restriction map of pMB which was not accurate. The amino acid sequence shown in 6 is one of the six possible sequences (53 Frame 1), methionine, which is a start of protein sequence, and stop codons are over striking. One potentially matching sequence of protein encoded in the PstI fragment of pMB shown in 7, aminoglycoside 3-phosphotransferase, begins with the first methionine in the fragment and have a length of 253 amino acids. 4. Conclusion This practical provide us a better understanding of how to make a recombinant DNA and molecular cloning technique. These experiences can act as fundament of further researches such as researches in cancer cells. References: [1] Williams Wu, Michael J. Welsh, [et al.] (2003) Gene Biotechnology (2nd edition). [2] Gerald Karp. (2002) Cell and Molecular Biology (3rd edition). [3] Benjamin Lewin. (2004) Gene (International edition).

Rebecca :: Essays Papers

Rebecca Henry Ford was born on July 30, 1863 to William and Mary Ford. He was the first of six children. He grew up in a rich farming household in Dearborn, Michigan. He enjoyed a typical childhood, spending his days in a one-room schoolhouse and doing farm chores. Ever since he was young, he showed an interest for the mechanical aspect of things, and how they worked and functioned. He used to take things apart and put them back together to get an idea of the inner workings of basic mechanical tools (Nevins, 47 - 50). In 1879, at a young age of 16, he left his home to travel to the near by city of Detroit to work as an apprentice for a machinist. He occasionally returned home to work on the farm. He remained an apprentice for three years and then returned to Dearborn. During the next few years, Henry divided his time between operating and repairing steam engines, finding occasional work in Detroit factories, and working on his fathers broken down farm equipment, as well as lending an unwilling hand with other farm work. Henry got married to Clara Bryant in 1888 Henry supported himself and his wife by running a sawmill (Collier, 145 - 152). In 1891, Henry became an engineer with the Edison Illumination Company. This was an important event in his life because it signified that he had made a conscious career move into industrial pursuits. He was promoted to Chief Engineer in 1893. This gave him enough time and money to devote attention to his personal experiments on internal combustion engines (Lacey 13 - 14). The high point of this research came with the completion of his own self-propelled vehicle, the Quadricycle. This bike had four wire wheels and was steered with a tiller, like a boat. It had two forward speeds, and no reverse. Although this was not the first self-propelled vehicle, it set Henry Ford as one of the major pioneers whom helped this nation become one of motorists (Head 22 - 24). Ford decided that he wanted to become an automobile manufacturer. After two unsuccessful tries, Ford motor company was finally incorporated in 1903 with Henry Ford as the Vice President and Chief Engineer. When the company first started it was only producing a few cars a day at the Ford factory on Mack Avenue in Detroit. A group of two or three men would work on one car from components made to order by other companies (Lewis 99 - 100)

Cloud Computing Essay

ABSTRACT: This white paper is an introduction to the terms, characteristics, and services associated with internet-based computing, commonly referred to as cloud computing. Also introduced are the benefits and challenges associated with cloud computing, and for those seeking to use communications services in the cloud, briefly presented are different ways of determining the interfaces needed to use these communications services. Cloud computing is where software applications, processing power, data and potentially even artificial intelligence are accessed over the Internet. Many private individuals now regularly use an online email application such as Gmail, Yahoo! Mail or Hotmail. The location of physical resources and devices being accessed are typically not known to the end user. It also provides facilities for users to develop, deploy and manage their applications ‘on the cloud’, which entails virtualization of resources that maintains and manages itself. 1. What is Cloud Computing? Cloud computing provides the facility to access shared resources and common infrastructure, offering services n demand over the network to perform operations that meet changing business needs. Definitions: â€Å"Cloud computing is a general term for anything that involves delivering hosted services over the internet.† – Wikipedia â€Å"Cloud computing is Internet-based computing, whereby shared resources, software, and information are provided to computers and other devices on demand, like the electricity grid.†- Wikipedia Basically a cloud is a virtualization of Resources that manages and maintains itself. CCSIT, Junagadh tank.infotech@yahoo.com Page 1 2. Types of cloud Public Cloud: the services are delivered to the client via the Internet from a third party service provider. Example: Amazon, Yahoo, Google Example of Clouds 3. Architecture Cloud architecture,[15] the systems architecture of the software systems involved in the delivery of cloud computing, typically involves multiple cloud components communicating with each other over application programming interfaces, usually web services and 3-tier architecture. This resembles the Unix philosophy of having multiple programs each doing one thing well and working together over universal interfaces. Complexity is controlled and the resulting systems are more manageable than their monolithic counterparts. Private Cloud: these services are managed and provided within the organization. There are less restriction on network bandwidth, fewer security exposures and other legal requirements compared to the public Cloud. Example: HP Data Centers Hybrid cloud: There is some confusion over the term â€Å"Hybrid† when applied to the cloud – a standard definition of the term â€Å"Hybrid Cloud† has not yet emerged. The term â€Å"Hybrid Cloud† has been used to mean either two separate clouds joined together (public, private, internal or external), or a combination of virtualized cloud server instances used together with real physical hardware. The most correct definition of the term â€Å"Hybrid Cloud† is probably the use of physical hardware and virtualized cloud server instances together to provide a single common service Architecture The two most significant components of cloud computing architecture are known as the front end and the back end. The front end is the part seen by the client, i.e. the computer user. Hybrid cloud CCSIT, Junagadh tank.infotech@yahoo.com Page 2 This includes the client’s network (or computer) and the applications used to access the cloud via a user interface such as a web browser. The back end of the cloud computing architecture is the ‘cloud’ itself, comprising various computers, servers and data storage devices collaboration. For more information on collaborative working using Google Docs, you can watch the now classic video Google Docs in Plain English. Taking collaboration further still, the outputs of some SaaS applications can be embedded in other web pages as web service gadgets. For example, a Google Docs or Zoho Sheet chart can be mashed into another website. There it will automatically update when the data in the online spreadsheet that is generating it is changed. SaaS applications are also constantly updated, which can free users of the â€Å"upgrade hell† of a major traditional software package revision. The disadvantage of SaaS is that it is basically a takeit-or-leave-it form of cloud computing. This means that businesses and individuals who require direct access to cloud computing hardware on which they can run their own applications cannot use SaaS. Rather, they need to cloud compute at the platform or infrastructure level using either platform as a service (PaaS) or infrastructure as a service (IaaS). 4. Services of Cloud Computing SaaS(Software as a Service) PaaS(Platform as a Service) IaaS(Infrastructure as a Service) Services Of Cloud computing PaaS(Platform as a Service) A platform is a software environment used to develop and run applications. For example, Microsoft Word is an application that runs on the Microsoft Windows platform. When people choose to cloud compute using platform as a service or ‘PaaS’, they obtain access to an online platform provided by a cloud computing vendor. They can then use this platform to develop and deliver their own online (SaaS) applications. Applications developed using PaaS may be used privately by just one or a few users within a particular company. However, they can also be offered free or for-a-fee to anybody on the web. This means that if you have a great idea for a new online application then you can use PaaS to turn it into a reality! Several cloud suppliers now offer PaaS tools. Most notably these include Google App Engine, Microsoft Windows Azure, and Force.com. All such offerings effectively provide their customers with a box of cloud computing Lego. New applications are then constructed from the plastic bricks on offer. With Force.com, some applications can even be built using a simple drag-and-drop interface. Relatively nontechnical people can therefore create new online applications very quickly. SaaS (Software as a Service) Software as a service is where computer applications are accessed over the Internet rather than being installed on a local computing device or in a local data centre. So, for example, people may use an online word processor like Google Docs, an online database application like Zoho Creator, an online photo editor like Pixar, or an online invoicing application such as Zoho Invoice. Many SaaS applications are free to use, at least initially. You can find links to a great many in the Cloud Computing Directory. SaaS can provide its users with many benefits. These include the general cloud computing advantages of dynamic scalability and any device independence, as well as the benefit of being able to use an application without incurring fixed costs. Many SaaS applications are also collaborative. This allows multiple users to share documents and even to work on them at the same time.  For example, in the Google Docs spreadsheet different users can work on different cells simultaneously. The cells different users are working on are locked-off and highlighted in different colours. A real-time chat window can also be opened up alongside the spreadsheet to further enhance Indeed, Force.com claim that their â€Å"simplified programming model and cloud-based environment mean [customers] can build and run applications five times faster, at about half the cost of traditional software platforms†. Google App Engine and Force.com also allow an initial application to be created for free! Whilst PaaS is great in many situations, its users do need to be mindful of the involved flexibility verses power trade-off. What this means is that whilst PaaS makes it relatively easy to create new online applications, users are nevertheless constrained by the particular programming languages and tools provided by their PaaS supplier. In other words, PaaS vendors have total control over which Lego bricks they allow their customers to build with. Whilst this ensures that applications built using the tools on offer will always function correctly, it is nevertheless restrictive. It is for this reason that many companies and some individuals choose to cloud compute at t he infrastructure level. Dedicated physical servers and virtual server instances can perform exactly the same functions. However, there are some differences between them. For a start, virtual server instances are cheaper to supply as each does not require its own piece of physical hardware in a cloud data centre. On the other hand, virtual server instances are sometimes seen as less secure by those who do not want to share server hardware with other customers. For this reason, four categories of IaaS are available. These are most commonly known as â€Å"private clouds†, â€Å"dedicated hosting†, â€Å"hybrid hosting† and â€Å"cloud hosting†. 5. How cloud computing works? In traditional enterprise computing, IT departments forecast demand for applications and capacity and invest time and money to develop those resources inhouse or purchase them from others and operate them in-house. IaaS (Infrastructure as a Service) Infrastructure as a service or â€Å"IaaS† is where a cloud supplier provides online infrastructure on which their customers can store data and develop and run whatever applications they please. IaaS therefore allows companies to move their existing programs and data into the cloud and to close down their own local servers and data centres. Whilst computing applications run on platforms, platforms in turn run on computing infrastructure. So, for example, whilst the Microsoft Word application runs on the Microsoft Windows platform, in turn the Microsoft Windows platform runs on the infrastructure of an IBM-compatible PC. How it works The fundamental building block of cloud computing infrastructure is the server. Cloud computing servers are basically computers on which online applications can be run and data can be stored. When provided by an IaaS vendor, cloud servers can also be real or virtual. Real or â€Å"dedicated† servers are individual circuit boards – known as blades – mounted within equipment racks in a data centre. In contrast virtual servers – also known as â€Å"virtual server instances† – are software-controlled slices of real, physical servers. Virtual servers are created by a process called virtualization that allows many users to share the processing power of one physical server. With cloud computing, institutions procure IT services from remote providers, and campus constituents access these resources over the Internet. E-mail, for example, long considered a staple of an institution’s IT operations, can be obtained from a range of sources, and a growing number of campuses contract with outside suppliers for this function. Software is hosted by the provider and does not need to be installed—or maintained—on individual computers around campus. In some cases, a large university or a consortium might become a provider of cloud services. Storage and processing needs can also be met by the cloud. Institutions pay only for the resources used, and users can access the applications and files they need from virtually any Internet- connected computer. In a mature cloud computing environment, institutions would be able to add new IT services or respond to changes in capacity on the fly, saving capital costs that can be redirected to programs of strategic value to the institution. Advantages †¢ †¢ †¢ †¢ †¢ †¢ †¢ †¢ †¢ Reduced Hardware equipment for end users Improved Performance Lower Hardware and Software Maintenance Instant Software Updates Accessibility Less Expensive (Amazon example) Better Collaboration Pay for what you use Flexible 6. CHARACTERISTICS †¢ High scalability Cloud environments enable servicing of business requirements for larger audiences, through high scalability Disadvantages †¢ †¢ †¢ †¢ †¢ †¢ Security Issues (#1 concern) Internet connection Too many platforms Location of Servers Time for Transition Speed †¢ Agility The cloud works in the ‘distributed mode’ environment. It shares resources among users and tasks, while improving efficiency and agility (responsiveness) †¢ High availability and reliability Availability of servers is high and more reliable as the chances of infrastructure failure are minimal †¢ Multi-sharing With the cloud working in a distributed and shared mode, multiple users and applications can work more efficiently with cost Reductions by sharing common infrastructure †¢ Services in pay-per-use mode SLAs between the provider and the user must be defined when offering services in pay per use mode. This may be based on the complexity of services offered Application Programming Interfaces (APIs) may be offered to the users so they can access services on the cloud by using these APIs 7. CONCLUSION After so many years, Cloud Computing today is the beginning of â€Å"network based computing† over Internet in force. It is the technology of the decade and is the enabling element of two totally new computing models, the Client-Cloud computing and the Terminal-Cloud computing. These new models would create whole generations of applications and business. Our prediction is that it is the beginning to the end of the dominance of desktop computing such as that with the Windows. It is also the beginning of a new Internet based service economy: the Internet centric, Web based, on demand, Cloud applications and computing economy

The Purpose Of Barium Swallow Health And Social Care Essay

The most common positive or radiopaque, contrast medium used to visualise the GI system in Ba sulfate which normally merely referred as Ba merely. There is contraindication to barium sulfate. These mixtures are contraindicated and might hold possible opportunity to get away into the peritoneal pit. If big sum of Ba sulphate flight into the peritoneal pit, this can take to enteric infarcts or peritoneal inflammation. This flight may happen through a pierced syrupy or during surgery that follow the radiographic process. Pathologic indicant for Ba sups This process is done to bespeak when the patient have anemia, mechanical hurting on swallowing, reflux, Preoperative anatomical presentation, appraisal of trachea-esophageal fistulous withers and besides the appraisal of the side of perforation and besides indigestion. The diseased indicant for the Ba swallow scrutiny is achalasia, anatomic anomalousnesss, barrette ‘s gorge, carcinoma gorge, dyspigia and esophageal varices. Achalasia is a motor upset of the gorge in which vermiculation is reduced along the gorge. Next is anatomic anomalousnesss which caused by disease, such as malignant neoplastic disease of the gorge or possibly. Patients who suffer a shot frequently develop impaired get downing mechanism. Certain nutrients and contrast agents are administrated during the scrutiny for rating of the swelling forms. Dysphagia is trouble in get downing this may due to a congenital or acquired status, a at bay bolus of nutrient or redness. Narrowing and enlarged, flaccid visual aspect of the gorge may be seen during the Ba sup, depending on the cause of the dysphagia. The other indicant for Ba sup is, to bespeak carcinoma of the gorge includes one of the most common malignant of the gorge is ardeno carcinoma. The one of the symptoms of this pathology include dysphagia ( trouble in get downing ) . Last, foreign organic structure are besides can be detect by utilizing this process to the patient that ingest assortment of nutrient including a bolus of nutrient, metallic object and other stuff that will lodge the gorge. Contraindications Nonspecific, nevertheless low solar H2O soluble contrast agents are best used in probes where aspiration may happen. Preparation Patient readying.Before Patient readyingNo readying for Ba swallow scrutiny needed because gorge is empty most of the clip unless an upper GI series is to follow. If the patient is have oning anything metallic from the most to the waist must be removed. Ask the patient to alter to hospital gown. Before the fluoroscopic process is perform, a patients history should be taken and the scrutiny carefully explained to the patient.After readyingWhen the process is done, the patient can go on their regular diet as usual. Take orally administered medicines unless the physician asks non to make so. In 48 to 72 hours after the process, patient stool possibly in grey or white coloring material. Patient may see irregularity and normally been treated by eating laxative. Ask the patient to imbibe a batch of H2O for several yearss to avoid irregularity excessively. If the patient experienced any unable intestine motion or undergo important alterations after the process, inquire them to reach their d octor. Equipment readying Before making this process, the radiographer should fix some equipment such as fluoroscopy table with 90/20 jousts, rapid consecutive skiagraphy ( to border per second ) or video entering possibly required for appraisal if the laryngopharynx and upper gorge during swallow. Some extra equipment besides should necessitate such as disposable cup, little cup for sparkling agent, tissue and besides a straw possibly required for consumption of Ba when the tabular array is horizontal and besides injection disposal equipment. Contrast agent readying In this process, 250 % w/v Ba sulfate suspensions of 100 milliliters are required. Gastrografin ( should non be used for the probe of a trachea-esophageal fistulous withers or when aspiration is possible ) . An sparkling agent will be required for illustration a combination of Na hydrogen carbonate and citric acid, to bring forth C dioxide to dilate the tummy. This will besides move as dual contrast agent against the Ba to heighten the visual image of the mucous membrane. Last, LOCM for about around 350mg I/ml is besides required in this process. Procedure The patient will be place behind the roentgenoscope equipment for the x beam exposure. The process begins with the patient in the vertical or vertical place and the cup of thin Ba is placed in the patients left manus closed to the left shoulder. Then, the patient is asked to get down the liquid in the cup utilizing a straw. The patient is so inquiring to take the effervescent granules ( either dry or assorted with a little sum of H2O if dry granule is excessively hard ) or other effervescent assistance, followed by citric acid. It is of import to affect on the patient that this will bring forth gas in the tummy and may give them the make fulling that they need to burp. To avoid this, the best manner is to state them to maintain swallowing. The enteric piece of land of the next gorge, tummy and duodenum are seeable when the Ba fills and coated it. The radiotherapist observes the flow of the Ba with the roentgenoscope. Swallowing of the thin Ba is observed with the patients in assorted places. The patient will inquire to revolve true 360o at their ain topographic point. This will guarantee all the surfacing facet of the stomachic mucous membrane is ready for the appraisal of the tummy. The patient is inquiring to turn to their left ( LPO ) where a topographic point image is taken. Then, patient will turn their organic structure back to the supine ( AP ) place and bend to their right ( RPO ) . Last, the patient is return to the vertical place, turn somewhat to their left and erect ( LPO ) . Film is taken to demo the distal gorge and the fundus of the tummy. The similar place will be used when the patient get down the thick Ba. The used of the thick Ba allows better visual image of mucosal forms and any lesions within the gorge. The type of Ba used is determined by the radiotherapist. After the vertical survey has been complete, horizontal and trendeleburg places with midst and thin Ba may follow. The x beam radiation is directing by the ten beam machine ( fluoroscopy ) through the patient ‘s tissue organic structure and to a movie on the opposite side of the patient ‘s organic structure. Different organic structure tissue will absorbed different sum of radiation that penetrates the organic structure tissue. The abnormalcies, different organ, and some conditions all become seeable on the x beam movie due to difference in the composing since the incursion of the x beam beam is block by them. Radiation Protection Radiation protection is used to except clinically unhelpful scrutinies. They are many ways to cut down unserviceable radiation like minimise the fluoroscopy clip and current so that merely the exact radiation is given to the patient. Use collimation during the process to minimise the field size. Give screening to the sensitive organ of the patient when possible. Introduce QA coder to optimise staff and equipment public presentation and to do regular cheques on. Use video recording equipment alternatively of utilizing cine camera during fluoroscopy. Install modern image intensives with digital image processing possible and sensitive ( e.g. CsI ) photocathodes. Use modern image intensive and topographic point movie photofluoroscopy with 100mm camera alternatively of skiagraphy whenever appropriate. Benefit Upper GI piece of land scrutiny is really safe and noninvasive process. This scrutiny besides leads to an accurate analysis of the gorge, tummy and duodenum. This is because, Ba is non absorbed by the blood the organic structure and allergic reaction due this scrutiny is really rare. No radiation will stay in patient ‘s organic structure after the process is done n X beam has really less side consequence in the diagnostic scope. Hazards Some patient may see allergic to the flavorer that is added in the Ba. The patient must state the physician if they are allergic to chocolate, citrus fruit or certain berries before the process. There is merely little opportunity that some Ba will stay in the organic structure, taking to a obstruction of the digestive system. So, patient who have an obstructor in the GI piece of land they are non allow undergoing this scrutiny. The effectual radiation dosage for this process is 6mSv which is the same as the mean individual receives from the background radiation in two old ages. Precaution Barium is non be used if perforation is suspected. Pregnant adult females are advised to avoid this process because the radiation exposure may impact the foetus. Role of radiographer Before Arrange the assignment and state the patient about the clip, the day of the month and the topographic point where the scrutiny will be held. As the radiographer, gave the radiation protection to the patient is really of import. Give the patient a shielding to protect them from the radiation that can harm them. The room must be set up decently before the scrutiny took topographic point. Make certain the room is clean and ready to be used. All the equipment ‘s like cassette 24Ãâ€"30 centimeter, little cup and straw and contrast media ( Ba sulfate/gastrografi ) must be prepared before the scrutiny started. Make certain that fluoroscopy unit is in good status. State the patient what they should make and do certain they are all prepared. When the radiographer fix the list for the scrutiny, do certain that the diabetic patient is on the first list. This is because, they have to take their medicine on clip and if the diabetic patient are being ignored, this will do injury to them. During Patient placement Focus oning Collimation Radiologists penchant Adequate supply of cassettes Identity of exposed and unexposed cassettes Exposure factor choice Table position- patient comfort and safety Hand clasps, pes remainder, pillow, reassuarance Drip if any Drumhead