Wednesday, August 21, 2019
Why Did The Soviet Union Not Invade Poland History Essay
Why Did The Soviet Union Not Invade Poland History Essay This essay will primarily analyse the factors that prevented the Soviet Union from intervening in Poland in 1981, when faced with political opposition by the Solidarity movement. There are four main reasons as to why the USSR decided against the invasion of Poland: StanisÃâ¦Ã¢â¬Å¡aw Kanias involvement in the decision making process, the USAs pressure on the Soviet government, domestic factors affecting the Soviet Union and Wojciech Jaruzelskis successes in crushing the opposition. When combined, these factors worked as obstacles to the Soviet Unions decision to invade Poland. The Polish crisis officially burst onto the scene in August 1980. Under the leadership of Lech Walesa, some 10 million poles joined the solidarity movement which immediately set off alarm bells for the communist government in charge. Solidarity was an umbrella organisation which consisted of political and social organisations that wanted a change in the state of affairs in Poland. Solidarity aimed to hold the regime to its communistic promises of government by the people and less work for more pay. Furthermore it demanded free elections and called for a referendum on the replacement of the communist government. Solidarity was so influential that it was allowed to register as a political organisation which encroached on the monopoly of power that the communist government had normally enjoyed. The sheer numbers in Solidaritys ranks and position of relative power it held as a political opposition group caused panic in the Moscow Kremlin. The Soviet military reserves were called up and w arships were sent to ports in Poland. Furthermore a special commission was set up by the Kremlin headed by Mikhail Susolov to investigate the roots of the crisis as well as a remedy to tame the uprising. This background to the Polish crisis gives a solid foundation upon which analysis can take place as to why the invasion of Poland did not take place. StanisÃâ¦Ã¢â¬Å¡aw Kania played a crucial role in delaying the intervention till a time when the Polish government had proved itself incapable of handling the political opposition. In the early days of 1981 the Soviet Union had drawn up plans for military intervention in Poland. Soviet, East German and Czechoslovak troops would enter Poland, with 18 divisions remaining in close proximity to the city. The short but effective campaign was set to crush the solidarity movement and restore the communist governments supremacy in Poland. This campaign would have no doubt been complete humiliation for the Polish regime and its leaders, who would be viewed by the rest of the world and, Warsaw pact member alike, as a government incapable of controlling its own people. Furthermore this intervention would have left the Polish government with few supporters and a huge loss of faith from the general population. Kania, being a member of the ruling class in Poland, was determined not to let this h appen and thus played a vital role in delaying the Soviet intervention. On December the 5th during the Moscow summit Kania addressed Brezhnev and fellow Warsaw pact leaders of the critical condition of administrative affairs in his country. He acknowledged the threat that Solidarity posed to communist power in Poland however he emphasized that intervention was not the answer. He stated, If there were to be an intervention there would no doubt be a national uprisingà ¢Ã¢â ¬Ã ¦ which would leave socialist ideas swimming in blood. His open and truthful manner of addressing his countries problems gained the confidence of Leonid Brezhnev. At the end of the summit Brezhnev concluded that the intervention would be postponed in order to give Polish officials a chance to regain the confidence of the public and tame the political opposition. Hence Kanias influence proved a crucial obstacle to the Soviet intervention of Poland in 1981. The USA used its influence as the other global hegemony to great effect in deterring the Soviet Union from invading Poland. The USAs constant threats to the Soviet Union, under the Carter administration, leading up to 1980 are often seen as rather inadequate. Upon hearing that the Soviet Union planned to intervene in Poland, Jimmy Carter put out a press release stating that non intervention of Poland would have clear benefits for the USSR and US- Soviet relations. The Carter administration also had an informant within the Polish borders, who updated them on all Soviet military advancements. When informed of the Warsaw Pacts build up of troops around the Polish border, Carter promptly disclosed the information to the press and the Solidarity movement, thus denying the invaders the element of surprise. Although these threats and actions did have some effect on the Soviet decision making process, they were more useful as a foundation upon which the Reagan administration were able to bui ld their own intimidating tactics. Upon its inauguration into office the Regan administration stated that Soviet intervention in Poland would have dire consequences on US- Soviet relations and strongly advised them to stay out of Polish affairs. Furthermore Reagan emphasised that if Polish forces were to intervene in Poland it would be a, Polish matter in which the US would stay out. Rather than just target threats at the Soviet Union, the USA also provided economic incentive to make the Polish crisis a solely Polish affair. Regan ordered the rescheduling of Polands enormous debt to its creditors in order to enable a relatively peaceful political solution, as opposed to a violent military one. This debt postponement meant that the Polish regime could not focus more resources towards crushing the political uprising thus giving Soviet officials a major reason to leave the Polish crisis to Polish officials. Reagans tactics worked in intimidating the Soviet Union; the Soviet Union would ultimately factor in US relations as a big reason to stay out of Poland. The state of domestic affairs and the importance of public opinion are quite naturally seen as the biggest reasons for the Soviet decision to not intervene in Poland. In the 1980s Soviet leaders had a new found sensitivity towards public opinion. In order to continue the spread of communism, especially in the third world, the Soviet Union needed to portray itself as a progressive nation with the peoples best interest at heart. The Polish crisis had cropped up at a time when the USSR was engaged in a failing war in Afghanistan, with a faltering economy based on deteriorating terms of trade and the dà ©tente having all but ended. Yuri Andropov addressed the politburo on the 10th of December stating that it was an enormous risk to go into Poland that would most likely end in catastrophe. He stated that the USSRs priorities had changed since the 1950s and that they no longer needed Poland to maintain their influence. In addition he addressed the economic and political sanctions that the West would surely impose upon them which would prove an even greater strain on the already waning Soviet economy. On the other hand public opinion was of great importance to both the USA and the USSR and whichever side was deemed to be winning the battle would no doubt be in a better position to influence world affairs. Andropov addressed this point as well by clearly stating, that an invasion in Poland was out of the question because, World public opinion will condemn us [USSR]. These claims by Andropov were well found because the USSR was at a crossroads where they needed to focus on their own countries interests above all others. Ultimately the communist regime being replaced by Solidarity would have only proved a small obstacle for the USSR. The USSRs position of power and influence would have been enough to prevent the downfall of communism in Poland to be mirrored in the rest of the empire. In bordering East Germany and Czechoslovakia the polish crisis was received with relat ively neutral opinions. Their firmly rooted conservative regimes did not fear their respective populations to follow suit. This was mainly due to the fact that the populations of the two countries looked down on Poland for their massive debt and economic backwardness. If a large scale war were to have broken out between communism and capitalism, the USSR would have had no trouble in marching through Poland and reclaiming it and thus the leaders of the politburo concluded that there would be no immediate intervention in Poland. In making this decision Brezhnev remarked, Okay we wont go in, although if severe problems occur we would. Hence in this way the Soviet Union proved to be more concerned with long term western pressure and world public opinion than short term loss of a Warsaw pact member. Jaruzelskis success in imposing martial law is, in my opinion, the most crucial reason as to why the Soviet Union did not invade Poland in 1981. In the final weeks of 1981 it seemed as though the Soviet Unions decision not to invade Poland rested solely on the success of martial law in Poland. In the early days of December Jaruzelski held a conference directed towards Solidarity and other opposition groups where he said, If Polish forces do not manage to break resistance by Solidarity they [the public] could expect other countries to introduce armed forces in Poland. On December the 12th, the night prior to the proclamation of martial law, Warsaw Pact forces in neighbouring countries were put on alert in the case of a large scale public uprising that the Polish authorities would be unable to manage. The imposition of martial law on December 13th 1981 caught Solidarity and other opposition groups off guard. All political organisations, such as solidarity, were banned, a curfew was put in place and all telephone and postal mail were subject to censorship. The initial resistance to martial law proved to be weak and no match to Jaruzelskis military patrols that roamed the streets. Over 90 people were killed in the initial uprising which showed that Jaruzelski was liable to resort to extreme brutality in order to ensure that the nation was once again firmly under the grip of the communist regime. Furthermore in order to further hamper the opposition, all known solidarity members were rounded up for interrogation and Lech Walesa, Solidaritys leader, amongst other opposition leaders was arrested. Jaruzelskis tactics were working in the mere weeks after martial law was imposed. Special military courts were set up which had an outstandingly high rate of conviction. Jaruzelski instilled fear within the population to the magnitude that they refused to go on strike because they were likely to lose their jobs and be detained without trial. Underground Solidarity leaders att empted to rally the population to go on strike at their places of work, in response to this water tanks and armoured cars were sent to large factories and mills to combat any opposition. An underground Solidarity leader said, It was too much to ask of workersà ¢Ã¢â ¬Ã ¦ without specific strategy it was unfair to ask workers to risk their jobs. The public began to fear assembling in opposition to the government because they feared the over used police brutality and were no longer certain about receiving a free and fair trial. Lack of strong and organised opposition put Soviet intervention in Poland out of the question. Brezhnev no longer saw the need to intervene in a country where the communist regime had seemed to, at least temporarily, have the public and opposition under control. In the early 1990s Jaruzelski gave an interview to justify his proclamation of martial law in Poland, where he stated that martial law was the lesser evil in the given scenario. Had he not imposed it the Warsaw pact forces would have inevitably invaded the country. Thus the success of martial law stands as the biggest reason for Soviet non-intervention of Poland in 1981. The four main reasons that stood in the way of the Soviet Union intervening in Poland, all have their respective merits. However it is in the last two reasons, internal problems in the Soviet Union and Jaruzelskis success in crushing the opposition, that stand out as the most crucial. Had Solidarity taken power in 1981, all obstacles preventing the USSR from invading Poland would have vanished and an army would have ultimately been sent into Poland. However in my opinion Jaruzelskis success in imposing martial law was the only factor that gave the Soviet Union a finality about their decision to not invade Poland and must thus stand as the main point of analysis when considering the given question.
Tuesday, August 20, 2019
Packet-Hiding Method for Preventing Selective Jamming Attack
Packet-Hiding Method for Preventing Selective Jamming Attack Abstract The open nature of the wireless medium leaves it vulnerable to intentional interference attacks, typically referred to as jamming. This intentional interference with wireless transmissions can be used as a launchpad for mounting Denial-of-Service attacks on wireless networks. Typically, jamming has been addressed under an external threat model. However, adversaries with internal knowledge of protocol specifications and network secrets can launch low-effort jamming attacks that are difficult to detect and counter. In this work, we address the problem of selective jamming attacks in wireless networks. In these attacks, the adversary is active only for a short period of time, selectively targeting messages of high importance. We illustrate the advantages of selective jamming in terms of network performance degradation and adversary effort by presenting two case studies; a selective attack on TCP and one on routing.We show that selective jamming attacks can be launched by performing real -time packet classification at the physical layer. To mitigate these attacks, we develop three schemes that prevent real-time packet classification by combining cryptographic primitives with physical-layer attributes. We analyze the security of our methods and evaluate their computational and communication overhead. Algorithm 1. Symmetric encryption algorithm 2. Brute force attacks against block encryption algorithms Algorithm Description We propose a solution based on All-Or- Nothing Transformations (AONT) that introduces a modest communication and computation overhead. Such transformations were originally proposed by Rivest to slow down brute force attacks against block encryption algorithms . An AONT serves as a publicly known and completely invertible pre-processing step to a plaintext before it is passed to an ordinary block encryption algorithm. Architecture Existing System Jamming attacks are much harder to counter and more security problems. They have been shown to actualize severe Denial-of-Service (DoS) attacks against wireless networks. In the simplest form of jamming, the adversary interferes with the reception of messages by transmitting a continuous jamming signal , or several short jamming pulses jamming attacks have been considered under an external threat model, in which the jammer is not part of the network. Under this model, jamming strategies include the continuous or random transmission of highpower interference signals Proposed System In this paper, we address the problem of jamming under an internal threat model. We consider a sophisticated adversary who is aware of network secrets and the implementation details of network protocols at any layer in the network stack. The adversary exploits his internal knowledge for launching selective jamming attacks in which specific messages of high importance are targeted. For example, a jammer can target route-request/route-reply messages at the routing layer to prevent route discovery, or target TCP acknowledgments in a TCP session to severely degrade the throughput of an end-to-end flow To launch selective jamming attacks, the adversary must be capable of implementing a classify-then-jam strategy before the completion of a wireless transmission. Such strategy can be actualized either by classifying transmitted packets using protocol semantics, or by decoding packets on the fly. In the latter method, the jammer may decode the first few bits of a packet for recovering useful packet identifiers such as packet type, source and destination address. After classification, the adversary must induce a sufficient number of bit errors so that the packet cannot be recovered at the receiver [34]. Selective jamming requires an intimate knowledge of the physical (PHY) layer, as well as of the specifics of upper layers Modules:- 1. Network module 2. Real Time Packet Classification 3. Selective Jamming Module 4. Strong Hiding Commitment Scheme (SHCS) 5. Cryptographic Puzzle Hiding Scheme (CPHS) Module Descriptions Network module- We address the problem of preventing the jamming node from classifying m in real time, thus mitigating Js ability to perform selective jamming. The network consists of a collection of nodes connected via wireless links. Nodes may communicate directly if they are within communication range, or indirectly via multiple hops. Nodes communicate both in unicast mode and broadcast mode. Communications can be either unencrypted or encrypted. For encrypted broadcast communications, symmetric keys are shared among all intended receivers. These keys are established using preshared pairwise keys or asymmetric cryptography. Real Time Packet Classification Consider the generic communication system depicted in Fig. At the PHY layer, a packet m is encoded, interleaved, and modulated before it is transmitted over the wireless channel. At the receiver, the signal is demodulated, deinterleaved, and decoded, to recover the original packet m. Moreover, even if the encryption key of a hiding scheme were to remain secret, the static portions of a transmitted packet could potentially lead to packet classification. This is because for computationally-efficient encryption methods such as block encryption, the encryption of a prefix plaintext with the same key yields a static ciphertext prefix. Hence, an adversary who is aware of the underlying protocol specifics (structure of the frame) can use the static ciphertext portions of a transmitted packet to classify it. 3. Selective Jamming Module We illustrate the impact of selective jamming attacks on the network performance. implement selective jamming attacks in two multi-hop wireless network scenarios. In the first scenario, the attacker targeted a TCP connection established over a multi-hop wireless route. In the second scenario, the jammer targeted network-layer control messages transmitted during the route establishment process selective jamming would be the encryption of transmitted packets (including headers) with a static key. However, for broadcast communications, this static decryption key must be known to all intended receivers and hence, is susceptible to compromise. An adversary in possession of the decryption key can start decrypting as early as the reception of the first ciphertext block. 4. Strong Hiding Commitment Scheme (SHCS) We propose a strong hiding commitment scheme (SHCS), which is based on symmetric cryptography. Our main motivation is to satisfy the strong hiding property while keeping the computation and communication overhead to a minimum. The computation overhead of SHCS is one symmetric encryption at the sender and one symmetric decryption at the receiver. Because the header information is permuted as a trailer and encrypted, all receivers in the vicinity of a sender must receive the entire packet and decrypt it, before the packet type and destination can be determined. However, in wireless protocols such as 802.11, the complete packet is received at the MAC layer before it is decided if the packet must be discarded or be further processed . If some parts of the MAC header are deemed not to be useful information to the jammer, they can remain unencrypted in the header of the packet, thus avoiding the decryption operation at the receiver. 5. Cryptographic Puzzle Hiding Scheme (CPHS) we present a packet hiding scheme based on cryptographic puzzles. The main idea behind such puzzles is to force the recipient of a puzzle execute a pre-defined set of computations before he is able to extract a secret of interest. The time required for obtaining the solution of a puzzle depends on its hardness and the computational ability of the solver. The advantage of the puzzlebased scheme is that its security does not rely on the PHY layer parameters. However, it has higher computation and communication overhead We consider several puzzle schemes as the basis for CPHS. For each scheme, we analyze the implementation details which impact security and performance. Cryptographic puzzles are primitives originally suggested by Merkle as a method for establishing a secret over an insecure channel. They find a wide range of applications from preventing DoS attacks to providing broadcast authentication and key escrow schemes System Requirements: Hardware Requirements: System: Pentium IV 2.4 GHz. Hard Disk: 40 GB. Floppy Drive: 1.44 Mb. Monitor: 15 VGA Colour. Mouse: Logitech. Ram: 256 Mb. Software Requirements: Operating system :- Windows XP Professional Front End :- JAVA, Swing(JFC),RMI Tool :Eclipse 3.3
Monday, August 19, 2019
Cultural Competence Essay -- essays research papers
The American Academy of Family Physicians website defines cultural competence as: ââ¬Å"A set of congruent behaviors, attitudes and policies that come together as a system, agency or among professionals and enable that system, agency or those professionals to work effectively in cross-cultural situations. The word "culture" is used because it implies the integrated pattern of human thoughts, communications, actions, customs, beliefs, values and institutions of a racial, ethnic, religious or social group. The word competence is used because it implies having a capacity to function effectively.â⬠Campinha-Bacote constructed a model that depicts cultural competence into five different areas: cultural awareness, cultural knowledge, cultural skill, cultural encounter, and cultural desire. When working as a healthcare professional, one needs to strive for cultural competence by mastering each of these areas. To begin my journey on mastering each area of cultural competence, I need to first assess my placement in each of the five categories. A very important area is cultural awareness. This involves conducting self-examination of any biases that I may have towards a certain culture. I am guilty of having such biases. While I do not have many biases, it is important that I work through each one and realize that biases are not facts. I am a Caucasian female who grew up in the suburbs of Detroit. I attended a private school from kindergarten until my sophomore year of college. My school was not very diverse. Once I started working, I was able to meet a few more people of different cultures. All of my professions have been in the suburbs, and the majority of people have been Caucasian. Eastern Michigan University is very diverse. I am glad that I am finally able to experience such an environment. Cultural knowledge is when a health care professional seeks information regarding different cultures and ethnic groups. They look at the differences that one culture/ethnic group may have regarding treatment of an illness, health conditions, and biological variations. I have yet to do any personal research in this area. I have learned about some of these differences in a few of the nursing classes this past year and a half. I know that this is a detrimental area of nursing, especially since our country is becom... ...nts who have been of a different culture and I am willing to care for many more. By reviewing my position in each of the areas in the model, I realize that I do not yet fit into the expectations. I believe that I am on my way to achieving cultural competence. I still need to work on cultural awareness. I need to conduct a further self-examination to be sure I understand each of my biases. I need to start researching to improve my cultural knowledge. My cultural skill needs to improve in the aspect of becoming more comfortable in conducting a cultural assessment. I engage in conversations, and in friendships with people of other culture (cultural encounter) and enjoy becoming culturally aware and knowledgeable (cultural desire). This guide is very appropriate for the nursing field. I believe that I am culturally competent enough to work in a health care profession. I will continue to improve in each category. Everyday is a new day. I will be exposed to people of many backgrounds. I need to be ready and willing to adapt so that each person will feel equally comfortable and will receive equivalent healthcare. http://www.aafp.org/fpm/20001000/58cult.html#2 October 6, 2004
Sunday, August 18, 2019
drugs` Essay -- essays research papers
This is a movie about a mother named Sara Goldfarb played by Ellen Burstyn, her son and only child Harry played by Jared Leto, his best friend Tyrone C. Love played by Marlon Wayans, and Harryââ¬â¢s girlfriend Marion Silver played by Jennifer Connelly. The movie opens with a scene in which Harry is in the process of taking his motherââ¬â¢s television against her wishes. His mother is addicted to her T.V., and now that Harry has left home, it is her whole universe. Her favorite show is one where a man who has lost a lot of weight runs a game show. Her dream is to some day be on his show. Harryââ¬â¢s friend Tyrone is waiting outside the apartment to help him push the T.V. across town to the appliance manââ¬â¢s store where they sell the set and use the money to buy Heroin. The next scene shows Sara, Harryââ¬â¢s mother retriving the set back from the appliance man for what is most likely the hundreth time or so. Sara is what we call an ââ¬Å"enablerâ⬠; she turns her head to whatever Harry does and makes excuses for him. From there Harry and Tyrone get high with Harryââ¬â¢s girlfriend Marion. Soon we see as the addiction progresses, Harry and Tyrone begin to hatch a plan to score a large amount of Heroin so they can sell it and have their stash for free. This is a common train of thought for addicts. It is this same type of cognitive process that leads a Meth addict to setting up a home lab and cooking dope him, or herself. Then we see Sara get a phone call from a Television studio and are informed that she h...
Saturday, August 17, 2019
Integrative Learning Project: Organizational Setting Essay
The Kennedy Law Firm, PLLC, serves the north-central part of Tennessee and south-central part of Kentucky, with offices in Clarksville, Tennessee. The firm was established on Christian principles, focusing on helping individuals through their greatest times of need, in 1984. The firm handles a wide array of types of cases, including personal injury, criminal defense, bankruptcy, divorce, and custody matters in state, federal, and military courts. Kevin C. Kennedy is its founding member and managing partner, yet still practices and is still active in the firmââ¬â¢s operations. There are three office locations across the city; with a main office by the county courthouse, another office close to Fort Campbellââ¬â¢s gates, and the last location provides a location closer to individuals on the northeastern part of town. Mission The Kennedy Law Firmââ¬â¢s main mission is ââ¬Å"to be that rock in times of trouble by providing quality legal advice and support to people going through divorce, an arrest, injury or bankruptcyâ⬠(Google+, 2015). The firm seeks to provide its services based on Christian ideals, which the founding partner pursues by actively participating in numerous community events. The office by Fort Campbell is even being used by a church for services and other meetings. Mr. Kennedy does not hide his commitment to God, and he boldly proclaims his views in advertising and other interactions. The firm meets this mission by opening at 7:00 AM Monday through Friday, staying open until 6:00 PM Monday through Thursday, and being open on Saturdays from 8:00 AM to 5:00 PM. There is not one other firm in the Clarksville area that has hours which are as accommodating to their customer base. Mr. Kennedy even encourages his attorneys to schedule appointments outside of those hours, should it be something that the customer needs to get the legal service desired. Customers The Kennedy Law Firmââ¬â¢s external customer base is made up of individuals from all walks of life, from rich to poor, Christian to non-believer, and any and all race or ethnicity. Virtually anyone may fall victim to the perils of a legal battle, so the firmââ¬â¢s customers cannot be classified as falling within any particular ââ¬Å"typeâ⬠or ââ¬Å"categoryâ⬠. Internally, the firmââ¬â¢s customers are made up of the attorneys. The paralegals, assistants, and other support staff must ensure that the work they are doing meets the needs and wants of the attorneys. Furthermore, the attorneys must work hard to meet the high standards for a Christian organization, as set by the managing partner. Value As an attorney for the firm, I provide legal services for the customers that walk through the door. More specifically, I am one of only a couple of attorneys that have committed to remain in the office until 6:00 PM to ensure that an attorney is available when the office is open. Furthermore, I provide greater payment flexibility to clients so that they might actually be able to afford quality legal representation without taking on an insurmountable debt. Even though as a young attorney with a growing client base I do not make an income which many may attribute to attorneys when they think of them, I still attempt to take on pro bono work to help those individuals that cannot even afford the flexible payment arrangements which we try to establish. My previous work for Westlaw, a legal research provider, has also made me invaluable to the firm. I have helped other attorneys and paralegals in the firm with posing research queries and setting up their accounts to get the most from the system with the least amount of effort. I was able to increase the efficiency of research efforts for practically every individual within the firm. This means that the services we provide can be done at less cost, a saving which can be passed on to clients in an effort to make justice more accessible for all. Biblical Integration Christianity plays a huge role in this firm, and it was one of the major factors which drew me to seeking employment with the firm. Not only does the firm unashamedly advertise its Christian ideals and roots, theà atmosphere in the office shows the same strong embrace of such ideals. Employees are free to discuss their religious viewpoints with one another, which only further solidifies the family-like environment which permeates the firm. Every meeting is closed with a prayer, and every morning a Bible study session is offered in the conference room for those employees wanting and able to attend. Reference The Kennedy Law Firm, PLLC. Google+ profile page. Retrieved on January 25, 2015, from https://plus.google.com/110251003608330856023/about?hl=en
Computer Operating System Essay
The Windows series of operating systems produced by the Microsoft Corporation primarily make use of two file systems: the File Allocation Table (FAT) and the New Technology File System (NTFS). Additionally, some versions of Windows NT also support the use of the High Performance File System (HPFS), a result of Microsoftââ¬â¢s joint developer involvement with IBM to produce the OS/2 operating system. (Duncan, 1989; Custer, 1994) Initially released with DOS, FAT makes use of a table which indexes information on which sections of the storage medium are free, unusable or taken up by files. Disk space is partitioned into distinct units known as sectors or clusters. There is no real organization to the directory structure of FAT, and as such free disk space can become distributed across many different sectors, resulting in file space being allocated in discontiguous sectors. As such, data is highly fragmented and increases seek times. (Microsoft, 2007; Duncan 1989) HPFS was first introduced with OS/2. It improved over the core functionality of the FAT system by introducing additional room for metadata attributes. Allocation units were changed from clusters to physical sectors of 512 bytes each, optimizing the disk space used for each file. HPFS directory entries also hold more attribute data: they possess single sector FNODEs that serve as the control structure for each directory. Fragmentation is drastically reduced by allocating as much of a file in contiguous sectors. However, the HPFS is dependent on a Super Block which contains the control structures of the root directory ââ¬â essentially the root FNODE. The Super Block is thus vulnerable to corruption or loss from a bad sector which can compromise an entire partitionââ¬â¢s useability. (Microsoft, 2007; Duncan, 1989) NTFS was designed to meet the growing demand for network servers and file sharing capabilities and it borrowed many of its concepts from the HPFS. (Kozierok, 2001) It is a journaling file system which permits greater recoverability by reverting files back to a useable state in the event of power failures and system crashes that occur during file transactions. Additionally, it also makes use of an expanded meta-data system which allows administrators to set a wider variety of access and use controls to files. The NTFS also optimizes data by storing small files into the Master File Table of the NTFS itself. The larger system format limit provides means that allocation units are much more refined as well. (Microsoft, 2004; 2007) Memory management on Windows has an access limit of up to 4GB of physical memory, and as such, the allocation of memory to processes is limited by this cap. By using paging to transfer pages of data between main memory and an auxiliary storage device such as a hard drive, it can overcome some of the limitations of physical RAM and enable system processes to have their own 4GB logical address space. Additionally, Windows accords memory protection to process in such a manner as to prevent access to one another, which is crucial to ensure that processes can operate simultaneously without compromising their functionality. (Garg, 2008) Microsoft Windows is essentially an operating system that is built with multi-tasking in mind, which in effect, allows multiple programs to be executed simultaneously. Each application is composed of one or more processes, each of which provides the resources needed to execute a program. Processes are composed of threads, a discrete unit by which processor time is allocated and a single thread, called the primary thread initiates the process. Each thread may execute any portion of code in the process, including those already being executed by another thread. Virtual address space and system resources are shared by threads of a single process, though exception handlers, scheduling priority and other components that determine a threadââ¬â¢s importance and role within the context of a process. (Microsoft Developer Network, 2008) Windows possesses many of the essential features crucial to basic security such as authentication and access control, encryption schemes and protection profiles. However, the API for cryptography is easily compromised by the fact that it easily trusts multiple keys in certifying authority of access. As such, only one code key is necessary to render a system vulnerable. Such a compromise is possible either through accidental disclosure of the private key or when the certifying authority mistakenly issues a certificate. On the level of network security protocol, Windows makes use of IPSec, a cryptographic IP-level protection system which is an open standard in the industry, which functions not only through data encryption and verification of hosts but by detecting modifications made to data during network transit. (Quardt, 2004) Windows security is at its most problematic with regards to applications and non-operating system products. Part of the problem is that for the purposes of consumer convenience, Microsoft Windows continues to be reliant on legacy applications that contain security threats that were of trivial matter during their initial release. Furthermore, the signature architecture of Microsoft programs is to mix application code and data, such as ActiveX for example, can allow untrusted data from outside the system to activate code. (Quardt, 2004) Also, Windows approves digitally signed code even if it is supplied from outside of the system, which means that a system administrator must implicitly trust whoever has signed the code to have subjected it to appropriate code review. In essence, the problem with Windows security is that trust and certification is so decentralized as to deny systems administrators total control and authority over the trustworthiness of code. à REFERENCES Microsoft Corporation. (2007, May 7) Overview of FAT, HPFS and NTFS File Systems. Retrieved August 9, 2008 from: http://support. microsoft. com/kb/100108 Microsoft Corporation (2004, May 5) Local File Systems for Windows. Retrieved August 9, 2008: http://download. microsoft. com/download/5/b/5/5b5bec17-ea71-4653-9539-204a672f11cf/LocFileSys. doc Duncan, R. (1989, September) Design goals and implementation of the new High Performance File System. Microsoft Systems Journal, 4, 5, 1-13. Custer, H. (1994) Inside the Windows NT File System. Washington: Microsoft Press. Kozierok, C. M. (2001, April 17). Overview and History of NTFS. PCGuide. Garg, P. ââ¬Å"Windows Memory Management. â⬠Intellectual Heaven. Retrieved August 10, 2008 from: http://www. intellectualheaven. com/Articles/WinMM. pdf Microsoft Developer Network (2008, August 7). ââ¬Å"About Processes and Threads. â⬠Retrieved August 10, 2008 from: http://msdn. microsoft. com/en-us/library/ms681917(VS. 85,printer). aspx Hart, J. M. (2004) Windows System Programming, 3rd Edition. Boston: Addison-Wesley Professional. Quandt, S. (2004, May 25) ââ¬Å"Linux and Windows security compared. â⬠Linux. com Retrieved August 11, 2008 from: http://www. linux. com/articles/36273? page=2
Friday, August 16, 2019
Oxfam Operational Management
The purpose of this assignment is to apply the main theories within operations management to summaries and critically evaluate the main issues facing Sofas within the following strategic and operational contexts: l. Globalization and International management II. Environmental management Ill Social responsibility lb. Technology v. Knowledge Management Figure 1 The Operations Strategy and Management model (Slack, N. , Chambers, S. , Johnston, R. , 2007) 1 Sofas Background Information The name Sofas comes from the Oxford Committee for Famine Relief, founded in Britain in 1942 during Second World War.Sofas International was formed in 1995 by a group of independent non-governmental organizations. Sofas is an independent organization affiliated to Sofas International, a global confederation of 14 independent Sofa's (www. Spam. Org). In 2010 Sofas was working in 99 countries. Sofas works directly with communities to find and influence solutions to poverty and injustice (www. Sofas. Org). So fas are working on development programs, emergency work and research. In 1948 Sofas opened its first charity shop. Sofa's current network of more than 830 charity shops are run by about 22000 volunteers and are a key source of income.Orders can be made by mail or over the Internet. Sofas teamed up with Yahoo! (Carroll, 2010) Sofas has an annual expenditure of US $700 million and employs around 1300 staff, of whom around 700 are based in Oxford, I-J, ND the others, together with about 1 500 locally recruited staff, work overseas. Sofas is best known for its work in emergency situations providing humanitarian aid where it is needed. However much of Sofa's work continues after the initial response. Sofa's Strategic plan 2007/10 underlines five main objectives (www. Sofas. Erg): The right to a sustainable livelihood The right to basic social services The right to life and security The right to be heard The right to equity (gender and diversity) The above describes Sofa's mission stateme nt ââ¬Å"A world without poverty and equal human rights for all peopleâ⬠. The Although all operations are similar, they all transform input resources into output products and services, they do differ (Slack, 2007). The Four Vs. ââ¬â Volume, Variety, Variation and Visibility, have implications for the cost of product, or in case of Sofas service, to its beneficiaries.As Sofas is a non profit organization and the interest is provide improvement of lives and fast response to natural and political disasters in Third World Countries, it could be said that their success could be measured in how well tenet support Ana Involvement rennet's on loveliness AT tense teen are knelling o. The Volume for Sofas is measured by the improvement of living conditions, by how many people have an access to clear water or how many lives are saved after a natural disaster. Sofas is involved in many projects therefore the Variety should be seen as high.However due to the nature of the work Sofas do es and the help they provide, the variety demands high level of flexibility from Sofas, its employees and volunteers. In the case of a charity the Variation should be relatively low. And many charity organizations are concentrating on to one issue only. However Sofas is known for heir involvement in many projects and can offer help in various situations, natural disasters, political rows in countries of the third world, where many people are being denied a decent living.As well as providing safe water projects around the world, building schools and many others. Sofa's Variation is therefore higher than many other charities but still would not be consider high as in a profit organization. Due to the nature of raising money for their operations via their shops, appeals and various projects, the Visibility of Sofas and its people is high. The argument could be hat Sofas has more back office staff than front office and therefore the visibility is not as high. However such an argument ca n be dismissed based on the overall focus on Sofas.The contact with people is necessary for the nature of the business. Sofa's 4 Vs. summarizes in Figure 2. [pick] Figure 2 The 4 ââ¬Ëvâ⬠s module in relation to Sofa's operations Operations performance objectives There are five basic performance objectives which apply to all type of organizations (Slack, 2007). These objectives specifically relates to a basic tasks of satisfying customer requirements. Every organization has stakeholders who have a high interest in its operations. As per Slack Sofa's stakeholder groups can overlap.Sofa's volunteers who work in charity shops could also be employees as well as customers. Therefore a not for profit organizations who are influenced by more complex factors which they can not affect such as natural disasters, has to even more so define its operation's role, position and operation strategic objectives to show their stakeholders how they perform. The five objectives are quality, speed, dependability, flexibility and cost. Sofas aims to deliver high quality in each situation and project they are involved in.The quality s measured by the satisfaction of customers however in Sofa's case the satisfaction is not going to be reflected the same way as satisfaction with product or service of companies who produce these for profit. Sofa's customers are in many cases highly satisfied with a bare minimum of life standards and the help they receive. However quality coo a De considered Trot ten way AT Improvements AT humans' lives and livelihoods and its sustainability. Speed is something that is of a very high importance for Sofas. To respond fast to natural and other disasters is number one priority.The speed of the response could mean the difference between life and death. However improvement of women's rights and Sofas project of bringing education to all is anything but a speedy as the importance is to stabilize the changes first to make sure they are going to be permane nt improvements to their lives. For Sofas stakeholders dependability is a very important factor. For the people who receiving the help and support it is important to know that the support will be there and it is not Just a promise. For the volunteers and people who donated it is important to see that changes are being made and support is being given.Flexibility is the highest priority. Sofas is not only involved in various projects around the world but also needs to be able to change their plans and actions to respond fast to many situations such as political changes within the country where they providing their support. Or in the case of natural disaster, Sofas needs to be ready to respond fast, to provide basic supplies for humanitarian support. Their employees and volunteers need to be flexible to react quickly to safe lives and livelihood. Operations have to change at short notice.Even the charity shops which are mostly stable operations have to be flexible and sometimes change their operations to respond to situation in the world. In the case of natural disasters the nature of donations needs to change, not only cash donations are required but food, clothes or blankets. Cost is a very difficult measurement for a charity organization. It is important to keep its costs down to achieve more with the money raised however in many situations it is not about keeping the cost low but about saving lives, providing fast response and help when its needed and this can drive cost up.With natural disaster it is not important the amount invested in to the help but the help that is provided. When people loose everything even a little amount of help and support is highly appreciated and therefore the cost is not of a high importance. Figure 3 Sofa's Polar Diagram The role of operations Operations management can make or break any business (Slack, 2007). Hayes and Wheelwright's four stages of operations contribution evaluate the role and contribution of the operations funct ion (Slack, 2007). Sofa's operations are at stage 4.Sofas does compete with other charities for donations and volunteers. However, where other charities offering food and money, Sofas offers lives stock, seeds, smelter, coeducation anon T s well as money winner teen are name (www. Sofas. Org). Sofas gets involved in peoples live for longer to assure long term improvements in their livelihoods. Figure 4 The four stage model of operations contribution. Operations Strategy Operations strategy concerns the pattern of strategic decisions and actions which set the role, objectives and activities of the operations (Slack, 2007).Sofa's operation strategy is to reduce and eliminate the causes of poverty and suffering (www. Sofas. Org). As an objective the Sofa's 5 Aims are used to build the operations strategy, the top down perspectives. The bottom up perspective is reflected in improvement for the next project Sofas gets involved as the knowledge management aspects will affect how the next operation is managed. Market requirements are reflected in the numbers of people Sofas has helped to rebuild their lives. However for a not for profit organization the strategy is more complex and is affected by The Operations Challenge.Figure 5 The four perspectives on operations strategy The Operations Challenge Although operations management is seen by some as being concerned largely with the routine aspects of business, it is in fact at the very forefront of almost all equines challenges (Slack, 2007). There are many changes that the operations management needs to understand, be concerned with and adjust to. The challenges and changes in the world can be seen as a positive change which helps with Sofa's 5 Aims detailed in section 1. 1 and in appendix 1 .These are highly affected by many challenges and operations managers should be familiar with Sofa's Aims and developments to be able to apply appropriate strategies. 1 Globalization With opening of new international market were o pened many new opportunities for operations managers to develop supplier relationships (Slack, 2007). Important for Sofas as the need to have a fast and affordable access to supplies all around the world, to be able to respond fast is high on their operations strategies. The Ethical globalization affects Sofa's political affluence and it works well with ethical approaches.Acknowledging shared responsibilities for addressing global challenges and affirming that our common humanity does not stop at national borders (Slack, 2 Corporate Social Responsibility In a modern business there is more and more pressure on to the general well-being of society. Economic development on a global level cannot be separated from questions of social Justice and from ecological stability (Discarding, cited in Walleye, 2008). It is a nature of Sofas business to assure that all humans are being treated with respect and as equals.As per Sofas, nobody should compromise on their human rights. Sofas provides a ssistance and protection to ordinary men, women and children caught up in conflict or natural disasters (www. Sofas. Org). It is Sofa's believe that all people have social, economic, political and civil rights as well as rights under humanitarian law (www. Sofas. Org). Not only Sofas provides provisions of eater, sanitation and hygiene promotion they also lobby governments and the international community to live up to their responsibilities to protect civilians (www. Sofas. Org).However it needs to be considered that what might be unremarkable in one country ethical framework could be regarded as highly dubious in another's (Slack, 2007). 3 Environmental Responsibility Environmental Responsibility is getting on to an agenda of any organization. Sofas is highly involved in campaigning for Climate Change. During 2010 over 1. 5 million people in 35 countries attended Climate Hearings organizes by Sofas and its ratters (www. Sofas. Org). These are organizes by Sofas to voice directly to global policy environments the reality of Global warming and its effects on to those living in poverty.Sofas is committed to reduce their carbon footprint by setting and delivering yearly targets (www. Sofas. Org). 4 Technology Technology has impact of some sort in almost every area of operations management (Slack, 2007). Internet has the biggest impact on how the business operates. Sofas improved their engagement with their supporters due to internet and other digital communications (www. Sofas. Org). This has resulted in to increase in online donations to over E. Mm in 2010. Sofas therefore invests more of their resources in to improvement of their website.Technology is also changing the ways Sofas International works. Introduction of Single Management Structure is a big step which wouldn't be possible without constant changes in technology. Supply network is also more simple and faster due to new technologies. Technology has a huge impact on to Sofas operations and the speed the y can reach people in need. 5 Knowledge Management Knowledge is rich, interpretative and often value-laden. In very complex operations recesses, It may De almost Impossible to make ten totality AT Knowledge concerning processes fully and entirely explicit (Slack, 2007).Sofa's operations the explicit knowledge is not possible. Sofas knowledge management is build over time and is a result of Sofas experience in various projects and responses to different situations. Sofas therefore employs the Tacit knowledge. Tacit knowledge may be observed and accumulated over time (Slack, 2007). Sofa's strategies are changing based on their understanding of how the world is changing for poor people and what the best response to it would be (www. Sofas. Erg). Sofas needs to understand these changes and react with agility and effectiveness to maximize their impact on to poor people.By improving knowledge management Sofas improves disaster preparedness and response the main purpose of their business. Being an international organization that responds to human needs anywhere in the world it is highly important for Sofas to have a local knowledge. Supplies, its availability and access to it, are a need for Sofas and the knowledge of local suppliers is strategically important. Sofas is building team of trainers and experts to implement their new system around the oral (www. Sofas. Org).Security of their aid workers a knowledge of political situations and predictions in many parts of Third World countries is necessity. Supply Network Every operation is a part of a larger and interconnected network of other operations. Supply network will include suppliers and customers (Slack, 2007). As Sofas works all around the world and has to be able to respond fast to a natural disaster it has to consider many ways of supply. Design decisions of Sofas supply network are important agenda for its operations and supply managers. Sofas supply planning is very unpredictable.They have a network of sup pliers they working with to make sure they are able to react fast to any natural disaster. However to work with the affected community in a longer term they need to be able to find new suppliers in a very short time period who are closer to the area of disaster and can supply the needs of the situation. Attachment 1 states Sofa's supply policy in detail. In the policy Sofas is not only concentrating on to its supply and demands but also concentrate on to the operations challenges as described in section 4 of this assignment.The nature of Sofa's work means inventory problems. It is not cost efficient to keep a large amount of supply on hold in case of an emergency. Keeping too much could resolve in high cost related to storage. Keeping too little could mean that when there is a natural disaster and speedy response is needed, there is not enough of basic supplies such as water, food and blankets. In 2009/10 Sofas has rolled out new software tool knows as Hellos (www. Sofas. Org) to he lp with delivering the right supplies, in the appropriate amount, at the best cost, on time to the people who need it the most.It will provide a real time overview of what Sofas has, where it is and owe efficiently it can be moved to where it is needed. Conclusions It can De concluded Tanat even tone oxtail Is a not Tort pronto organization teen 00 understand the importance of operational management and strategies and acting upon it. Sofas sets clear strategies and reviews them every year. It acts upon the need of updating their operation strategies. The core business of Sofas operations is help to people who are in a need of help and support. Its 5 aims are stated and in their Annual report Sofas clearly states percentage of charitable expenditure.However looking closely on everything that Sofas was involved in over the 2010 eroded, it is clear that the greater the need the faster the response and the less important the money involved in the initial response are. Sofas has set proj ects over the period of time and with regards to these it is easy to apply operational strategies and management. It is when a natural or political disaster happen that Sofa's operations change in priority. Sofas has to be highly flexible to be able to fulfill its promises to all its stakeholders. The five performance objectives and its importance are changing. They are affected by outside forces.There is a need of constantly improving its services and overview its operations strategies to avoid failure in delivering its promise. Sofas works in constantly changing world therefore the operations within Sofas are not only important to keep its cost down but are important for the delivery and action of Sofas motto together we will end poverty. Recommendations Sofas has dedicated supply policy. However their policy does not specify how Sofas improves on smoothness of their supply and costs involved with it. In 2009 Sofas has introduced a system that unites all its international organiza tions.
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