Computer Security Research Paper Example | Topics and Well Written Essays - 500 words

Computer Security - Research Paper Example Moreover, even if the vulnerabilities are exposed, it is likely that the hackers have used that information before. B.Keeping the attack confidential. This approach is being lauded by many organizations because this restricts the movements of hackers who are looking for exploits. This approach is good for government agencies because the general public can react hysterically once they learn that public agencies are not that secure. Perhaps, this approach should be used by organizations and agencies that can compromise national security. 2. The symmetric type of encryption is more popularly used simply because it more convenient and faster to implement than asymmetric encryption. This is due to the fact that same key is used to encrypt and decrypt the code by both receiver and sender of the message. There are many two main types of symmetric algorithms – block and stream ciphers. Examples of symmetric key cryptography are: DES, IDEA, AES and RC2. So far, DES is the most commonly used form of symmetric key. The only challenge presented to this method of encryption is that both parties must have a secure method when exchanging keys. Also, problems in verification can be encountered because both sender and user share the same key. Nevertheless, symmetric type is still used due to its speed and efficiency.

Learning Anatomy in the 16th and 17th century Essay

Learning Anatomy in the 16th and 17th century - Essay Example They later documented their work in the form of paintings, handbooks and other works. The art of human anatomy is dated back to the 1600 BC with the first contributor Mr. Edwin Smith. His work included the approach of the human body at different perspectives. According to his work, there is proof that the heart had vessels that helped in the transportation of blood throughout the body. He referred to them as blood vessels and they were believed to have originated from the heart. The treatise of the heart is contained in the Ebers Papyrus. He also noted that there was the presence of other vessels that helped in the transportation of other body fluids such as saliva, sweat, urine, semen and tears. Most of these organs were identified after examination of human corpses. Discoveries on human anatomy had various importances which can be viewed in the modern day society. Some of the artwork by artists foretold what would later be found out using state of the art technology. During the 16 and 17th centuries, there was no technology. However, these artists came up with paintings such as the Leornado Da Vinci’s painting on the human womb. His work foretold how the child looked like while in the wombs (Clayton & Ronald 55). It would later be confirmed using CRT scans which show the position of the child while in the womb. Artists work provided detailed information on the structure of the human body. They carried out researches on behalf of the general population to help doctors in their work. To some extent, the arties were so vigorous in their work such that they continued with their work even after bans had been enforced to reduce dissection on human corpses. For example, Leonardo was able to dissect close to 30 bodies during his research (Clayton & Ronald 45). This helped him provided a detailed report which would help him in his paintings. The paintings were used to create awareness to the members of the society. Most of the people did not know what constitut ed their bodies and how they functioned. As compared to the 21st century, his artwork is perfect. His sketches on the human body provided both internal and external details. He had and expansive study on bones, organs, muscles and the blood circulatory system. Vesalius on the other hand created detailed drawings on allegorical poses. After investing in research, he was able to gather data which he used to publish several books. He published the ‘De humani corporis fabrica’ which was a seven volume book containing his artwork. ‘Abridgement of the Structure of the Human Body’ was also published to provide his findings focusing on illustration rather than actual texts. According to other scholars, it is through Vesalius that they were able to learn the internal functioning of the human body. His findings were presented in a three dimensional place to help them provide detailed information to its viewers. Vesalius was the first scholar to provide a good descrip tion on the sphenoid bone. He was very detailed in his work and led to classification sternum. He also improved the works of Etienne which helped him clarify the type of veins and arteries and also the presence of valves. During the enlightenment era, most anatomist continued operating under the same ideology as Vesalius. He believed that all anatomists had the right to perform surgical operations on human corpses. His work later bore fruit after some of his followers led to the

Should capital punishment be reintroduced in the UK

Should capital punishment be reintroduced in the UK Capital punishment is a practise of which criminals, when, convicted of a serious crime known as a capital crime are executed. The term capital originates from the Latin word capitalis, meaning the head and a capital crime was originally punishable by the severing of the head. Although not always used, 58 countries still uphold capital punishment as a sentence according to Amnesty Internationals figures in December 2009, and, since 1985, over 50 countries have abolished capital punishment. The six main execution methods still used since 2000, are; electrocution, lethal injection, beheading, shooting, hanging and stoning. In the U.K hanging was the preferred way of executing a person. This was found to be of simple and quick preparation and an extremely quick process of dying for the prisoner. Capital punishment in the U.K was abolished in 1969. Nowadays capital punishment is considered a barbaric and inhumane sentence. The question of whether capital punishment should be reintroduced has been widely debated, argued and many reasons given for support and against its practise. This essay will provide the history of capital punishment in the U.K, and evaluate the arguments for and against reintroducing capital punishment to the U.K. The following steps were taken to acquire the information needed to complete this assignment: Questionnaires were distributed on the 19th October 2010 and collected on the 25th October 2010. Internet sources were accessed on the 17th, 21st, 22nd, 23rd, 24th and 25th of October 2010. Capital punishments abolition in the U.K William the Conqueror first abolished capital punishment in the U.K in the 11th Century but this was reinstated by his son. Several proposals were put forward to parliament from the late 1700s but all were opposed. In the 1800s hangings were seen as great days out and people of all classes would enjoy watching a criminal strung up by the neck and would be very disappointed to see him/her die too quickly. From the 1800s to the 1900s many capital crimes were reduced from the death penalty to imprisonment (see below table) and murder was the only capital crime still punishable by death. By the end of the Second World War, attitudes had changed towards accepting the abolition of capital punishment as people were concerned by the holocaust of Nazi Germany. The last executions to happen in the U.K were that of two men who were hanged in Walton Gaol in Liverpool. Capital Punishment Abolished Notable Date Notable Event 1908 People under 16 are no longer liable for hanging. 1922 Infanticide (Mother killing her child) is no longer a capital offence. 1931 Pregnant Women are no longer hanged. 1933 People under 18 are not executed. Sentenced to Her/his Majestys Pleasure. 1948 House of Commons suspends capital punishment. Overruled by House of Lords. 9 March 1950 Timothy John Evans hanged at Pentonville Prison. 28 January 1953 Derek Bentley hanged at Wandsworth Prison for the murder of P.C. Miles. 13 July 1955 Last Women hanged in U.K (Ruth Ellis at Holloway Prison). 1956 The passing of Death Penalty (Abolition) Bill is overturned by Lords. 1957 Homicide Act 1957 restricts use of capital punishment. 23 July 1957 First execution under the 1957 act: John Vickers. 5 November 1959 Last execution for murder of police officer: Gunther Podola. 13 August 1964 Last executions: Peter Anthony Allen Gwynne Owen Evans. 1965 Capital punishment in murder cases is suspended for 5 years. 1966 Timothy John Evans receives a posthumous pardon. 1969 Capital punishment for murder is abolished. February 1998 Mahmood Mattan receives a posthumous pardon. July 1998 Derek Bentley receives a posthumous pardon. Capital list. Available from http://stephen.stratford.co.uk/capital -list.htm (accessed 24th October 2010). Mps decided on May 20th 1998, to adopt human rights provisions, outlawing capital punishment for murder except for times of war or imminent threat of war. Capital punishment ended effectively with the criminal justice bill on the 31st July 1998 and on the 27th January 1999, the 6th protocol was signed by the home secretary formally abolishing capital punishment in the U.K. Arguments for capital punishment Cost: It can be argued that the cost of keeping a criminal incarcerated is cheaper than giving them the death penalty but this is not the case. Studies have shown that the complicated legal process of pre trial and trials are tremendously expensive. The additional cost of confining an inmate to death row, as compared to the maximum security prisons where those sentenced to life without possibility of parole ordinarily serve their sentences, is $90,000 per year per inmate. With Californias current death row population of 670, that accounts for $63.3 million annually. (Commission on the Fair Administration of Justice, June 30, 2008). Available from http://www.deathpenaltyinfo.org/costs-death-penalty. (Accessed 25th October 2010). Retribution: Murderers get what they deserve, punishment should fit the crime and an eye for an eye. This seems an debateable argument worldwide for many criminals to be given the death penalty as the punishment does not always fit the crime for example people who assault, are not assaulted and rapists who raped, are not raped. The Justice Centre of the University of Alaska at Anchorage, in its website section titled The Death Penalty: Specific Issues Retribution Justice for Murder Victims, offered the following: Death penalty advocates justify capital punishment under the principle of lex talionis, or an eye for an eye the belief that punishment should fit the crime. In particular, people who favor capital punishment argue that murderers should be executed in retribution for their crimes and that such retribution serves justice for murder victims and their survivors. Death penalty opponents emphasize the sacredness of life, arguing that killing is always wrong whether by individual or by the state, and that justice is best served through reconciliation. Justice center of the University of Alaska at Anchorage. Available from: http://www.deathpeanlty.procon.org/view.answers.php?questionID=0010004. (Accessed on the 25th October 2010). However there is a serious risk of executing the innocent and the adage People getting their just desserts pose a serious drawback for the retribution argument. Deterrence: Does the death penalty act as a deterrent and that by executing convicted criminals will deter would be murderers from killing people. Many people believe that this is correct and in 2000 George W Bush stated: I think the reason to support the death penalty is because it saves other peoples lives, and further that Its the only reason to be for it. The Berkeley electronic press available at: http://www.deathpenaltyinfo.org/donohue Deter.pdf. (Accessed on the 25th October 2010). Studies have failed to provide any evidence that deterrence works and research has found that if a crime is not pre-meditated it is unlikely that the criminal who most probably at the time of his/hers capital crime was not thinking logically and heedless to any consequences that would occur later. Persons who commit pre meditated murder often concentrate on escaping any detection or conviction and thus the threat of punishment by death does not deter them as they are convinced they will not be caught. John McAdams stated: If we execute murderers and there is in fact no deterrent effect, we have killed a bunch of murderers. If we fail to execute murderers, and doing so would in fact have deterred other murders, we have allowed the killing of a bunch of innocent victims. I would much rather risk the former. This, to me, is not a tough call. Marquette University/Department of Political Science, on deterrence available at: http://www.prodeathpenalty.com. (Accessed on 24th October 2010). Prevention of re-offending: Those who commit heinous crimes and are executed cannot commit any more crimes it is said but imprisonment for life does not necessarily make for a peaceful society either. In the U.K life imprisonment usually means a sentence of a minimum time which is set by a sentencing judge usually 15-20 years, the person who committed his/her crime then becomes eligible for parole. For example: Jon Venables after murdering Jamie Bulger along with his accomplice Robert Thompson was given a sentence of just eight years. There has been a public outcry about the sentence given and early this year Jon was recalled back to custody after breaching the terms of his release. Denise Bulger, Jamies mother stated nine years ago: If released they would reoffend Interview available at: http://www.thesun.co.uk/sol/homepage/news/2884530/jon-venables-recognised-by-a-localhtm. (Accessed on the 25th October 2010). Arguments against capital punishment Wrongly convicted: DNA testing has opened a large window into a persons claim of innocence and has literally changed the justice system. People have been motivated by external influences to confess or admit to a murder that they didnt commit only to be exonerated possibly years later. In the case of Frank Sterling, a New York truck driver convicted on a confession that he gave in 1992 that he had strangled a four year old girl. Frank served 19 years in jail only to be freed earlier this year with the help of the innocence project when DNA proved that he in fact did not murder her and another inmate Mark Christie had. Picture 12 Frank Sterling Freed After DNA proves His InnocenceFrank Sterling Image available at: http://www.genpop-org/2010/04frank-sterling-freed-after-dna-proves-hiinnocence/ (Accessed 17th October 2010). There is ample evidence now that proves there are and have been errors and flaws throughout the legal system, Frank Sterling is just one of countless numbers of people who are innocent. It is also inevitable that innocent people will be convicted and sentenced to death in the world and such mistakes cannot be put right. The right to live: It has been stated that the right to live is the most significant right of them all when it comes to the death penalty, but it can also be argued with the adage an eye for an eye. Professor van den Haag stated in an interview: I hold life sacred, and because I hold it sacred, I feel that anyone who takes some ones life should know that thereby he forsakes his own and does not just suffer an inconvenience about being put into prison for sometime http://www.prodeathpenalty.com/ornellaspaper.htm.(Accessed 21st October 2010). In the United Kingdom, Article 2 of the human rights act 1998 which states everyones right to life shall be protected by law was enforced in 2000 meaning that no one in the U.K can be sentenced to death. A Questionnaire was posted online on the 17th October. The graph below shows the results of the 120 people who were sent and replied to the questionnaire. C:UsersOwnerAppDataLocalMicrosoftWindowsTemporary Internet FilesLowContent.IE5ELA6NUIH20101024211242[1].jpg If capital punishment were to be re introduced into the U.K many questions would be raised for example: will innocent people be executed? can the legal system be trusted? and will it ever be proved as a deterrent etc? I personally dont believe that any of these questions can be answered with the upmost truth and above all proof and you have to take into account that each and every person in the world is capable of murder if faced with, for example: self defence. Whether or not capital punishment would deter would be criminals prior to their offense, I do believe that the death penalty should be reintroduced into the U.K. In the interest of the people, criminals who have committed acts of such a heinous nature should be given a punishment proportionate to fit the crime. I would go as far as to say that the U.K justice system should, when giving out a life sentence to an offender, mean it is for life and, when a life is taken in such a monstrous way, the offender should be sentenced to death. The reintroduction of U.K capital punishment would not come without its mistakes, and, it could cause misery to the offenders families. But I personally think that if it was reintroduced with strict laws and guidelines and only for offenders, who have committed terrible crimes, then there could be some retribution, it would permanently incapacitate them, and, maybe it could save some money that could be spent on rehabilitating other less serious criminals . Commision on the fair administration of Justice.http://www.deathpenaltyinfo.org/costs-death-penalty (Accessed 25th October 2010). http://abouthumanrights.co.uk/right-life.html (Accessed 25th October 2010). http://www.amnesty.org/en/death-penalty/numbers (Accessed 24th October 2010). http://www.genpop-org/2010/04frank-sterling-freed-after-dna-proves-his-innocence (Accessed 17th October 2010). http://www.deathpenaltyinfo.org/DonohueDeter.pdf http://www.prodeathpenalty.com/ornellaspaper.htm (Accessed 21st October 2010). http://stephen.stratford.co.uk/capital -list.htm (Accessed 24th October 2010). http://www.thesun.co.uk/sol/homepage/news/2884530/jon-venables-recognised-by-a-localhtm (Accessed 24th October 2010). http://users.rcn.com/mwood/deathpen.html#Retribution John McAdams Marquette University/Department of Political Science, on deterrence. http://www.prodeathpenalty.com (Accessed on the 24th October 2010). Justice Center of the University of Alaska at Anchorage. http://www.deathpeanlty.procon.org/view.answers.php?questionID=0010004 (Accessed 25th October 2010). The Berkeley electronic press. http://www.deathpenaltyinfo.org/donohuedeter.pdf (Accessed 25th October 2010). I would like to thank all my friends on facebook who answered my questions posted on the internet on the 17th of October 2010.

Soviet historians hold the view that the period ranging from 1905 to 19

Discuss the reasons why the Bolsheviks had achieved so little by 1914 Despite being the main opposition to the Tsar in Russia at the time, the Bolsheviks failed to make any significant progress in their aims to overthrow the Tsarist autocracy, due to many problems throwing the party in to crisis, with their efforts to influence the proletariat to revolt against the Tsar proved to be failed attempts. In order to come out with a fair and balanced conclusion, it is necessary to look at the opinions of historians from both ends of the spectrum: from the sympathetic Soviet historians, to the more critical opinions of the Western historians, and then lastly looking at the more balanced and neutral views of revisionist historians. Soviet historians hold the view that the period ranging from 1905 to 1914 was chosen by the Bolsheviks as a time to reorganise and strengthen their party, keeping in mind that the oppressive character of the Tsarist system caused too many obstacles for them, thus making it nearly impossible for them to make much progress in achieving there goals. Along with this, this body of historian also hold the Mensheviks responsible for lack of success, arguing that their awkwardness and co-operation with the bourgeoisie was undermining key Bolshevik beliefs, inadvertently destroying any opportunity the Bolsheviks may have had to create an alliance with the working classes and peasantry. They are seen as contradictors to Marxist ideals for these actions. Soviets believe that the 1905 revolution was both inspired and led by the Bolsheviks, with the Mensheviks co-operation with tsarist authorities being held responsible for... ...ar that there are several reasons that stand out as key in answering the question put forward. Firstly, the Bolsheviks faced the problem of the Okhrana and the autocracy, as this meant that there was always a threat from the secret police and therefore a small party was the only solution. Secondly, Lenin was partly to blame as he played hardly any role in the revolution of 1905 and also he failed to realise the potential of the Dumas. His ideology would not help him either as he constantly changed it in order to adapt and fit in with his surroundings. Finally, the Mensheviks were also a key obstacle as their larger party and co-operation with their bourgeoisie meant they were undermining key Bolshevik beliefs, thus destroying any opportunity the Bolsheviks may have had to create an alliance with the lower classes.

Movie: The Power of One Essay

The director John G. Avildsen has made the concert scene memorable from the film â€Å"The Power of One† which was set in apartheid time in Africa by using many visual and verbal techniques such as lighting, music and dialog that support all the suggestions that the scene makes. These techniques make this scene and film memorable. During the concert scene Peekay conducted a group of non-white African prisoners to sing for the commandant. Peekay was proven to be smart and determined in this scene because he translated the guards speech to the prisoners incorrectly to encourage the tribes to unite. The Guard told Peekay to translate â€Å"†¦sorriest prisoners in all of Africa!† but Peekay translate it to â€Å"Let us be one under the African Sky†. The prisoners sang a song about the guards â€Å"they run this way, they run that way, they are afraid, they are cowards..† in Zulu. Sergent Boreman cornered Peet and made him tell what the words to the song meant and then beat him to death because he was aggravated about what the prisoners were singing. Peekay got to Peet in time for him to say his last words: â€Å"All the tribes as one, thanks to you rainmaker†. A visual technique which made the concert scene memorable was lighting. The dark dim lighting suggested that the conditions of the prison were harsh. An example of this is when Geil Peet is beaten to death by Sergeant Boreman, the lighting was harsh, artificial and spot lighten which made Boreman look evil. The lighting gives the audience clues about the dark emotions experienced by Geil Peet in this scene. Another technique used in this film is the music during this scene. There were only two types of music, the piano and the background singing of the African prisoners which suggest a lot of things, for example the prisoners singing from different tribes could suggest co-operation and equality between tribes and the singing in Zulu meant that the commandant and Sergeant and guards could not understand what the tribes were singing about the guards being cowards and afraid. â€Å"Alyea Olyeah mon!† is what one of the prisoners was shouting out. Peekay in this scene translated the commandants speech incorrectly which gave the prisoners encouragement to bring honor to  their tribe. The dialog also made this scene memorable in this film. The dialog was very moving and powerful. The speeches were moving because the verbal and visuals at each part of the scene were supporting each other to create something beautiful even though Geil Peet was dieing in Peekay’s arms saying â€Å"†¦ rainmaker† the over narration when Geil dies is also moving â€Å"†¦for a brief moment he was a freeman†. This suggest that Peet had a hard life before if he was a freeman just before he died. The actual English speech of the commandant suggest that he hated all black people and thought that whites are superior which also suggest racism. I believe that this film â€Å"The Power of One† is a bold, strong and moving film and many memorable and important scenes like the concert scene. The Director John G. Avildsen has attempted to recreate what apartheid was like in Africa and I strongly believe that this film has captured that image.

Difference Between Backing Up and Archiving of Data Essay

Explain the difference between ‘backing up’ and ‘archiving’ of data, state the process taken for both and give reasons why they are necessary. It is important to know the basic differences between backup and archiving information, in order to prevent loss of important files on a computer. There is a big difference between the two and it comes down to variables between short term and long term storage. Backing up important data files on a computer should be done often, sometimes once a day or more. Thinking of it like a short term insurance policy, backups can be done using USG keys, disks, even to tape. Sometimes this information is overwritten each time it is saved, as new tiles are being added. Backups are primarily used for operational recovery, to quickly recover an overwritten file or corrupted database. The focus is on speed, both to back up and recover, and on data integrity. Archives, on the other hand, typically store a version of a file that no longer changing, or should not be changing. For example, an accountant for a small business that uses QuickBooks will back up his files regularly in order to prevent a disastrous loss of inform. He will entrust that information to an online backup system that is updated at the end of each business day. This way, if a problem occurs with the individual computer or network, then there is a way to resurrect the book without having to enter a month of work. Archiving, on the other hand, is the equivalent of a long term insurance policy for files that are rarely accessed or never changed. This type of storage creates a history of the files in an authentic form that can be accessed weeks from now or years from now. The storage media for archiving requires that it have a long, stable life. If the owner of the company died tomorrow, where would you begin to look for important documents? Or what if an audit of 2003 came up? Creating an archive is essential to traching down vital information to a company or individual. Typically, archives have been stored on magnetic tapes in the past, but with cost of online data archiving solutions becoming more practical and inexpensive, you will see more use of them. Offsite data archiving is highly recommended in the even t of a disaster. Another way of looking at the differences is that backup contains multiple restore points, allowing you to go back in time in case of a virus, accidental deletion or accidentally saving over a file. Archived information will only store a singly version of a file and this is rarely changing, if ever at all. Often archived data will also span decades of files. Archiving may require certain policies or rules that approve who have access, how long the records need to be stored etc.