Computer Viruses :: essays research papers

Computer Viruses Explain the difference between viruses, worms and Trojan horses in the context of computer and data security. Discuss the measures that need to be taken in order to maintain security. There is a type of computer program that is designed and written to destroy, alter or damage data stored on computers without your knowledge or permission. These are some of the problems that these programs cause ? Your computer displays annoying messages ? Your computer develops strange visual and sound effects ? Files on your computer mysteriously disappear ? Your computer starts working very slowly ? Your computer reboots unexpectedly These programs are typically referred to as viruses although technically the computing term virus actually refers to a specific type of pest program. Other types are called Trojan horses and worms. The difference between these pest programs is how they behave when attacking a computer system and I am going to look at each type individually to explain the difference starting with viruses. A computer virus is a program that is designed to replicate and spread itself on its own, preferably without anybody knowing it exists. They spread by attaching themselves to other programs (such as your word processing or spreadsheet programs). Then when a file with a virus attached to it is executed the virus will also be executed. Viruses can also attach themselves to system files the computer uses every time it is switched on, these are called boot sector viruses, and can cause persistent and widespread disruption to the computer. Viruses can also infest documents such as those created with a word processor. Infested documents are stored with a list of instructions called a macro, which is essentially a mini program. Then when the document is viewed the macro is activated. These viruses are called macro viruses and actually account for 67.5% of all virus damage. Worms are very similar to viruses but are technically different in the way that they replicate and spread through the system. The difference is that programs or files don’t need to be run in order to activate the spreading of a worm. Because of this worms can be very dangerous when released on to computer networks. The Internet Worm was released on to the Internet on the 2nd November 1988 spread to over 6,000 computers in less than a day. And the total monetary costs of this infection are estimated at about $98,000,000. Which proves how much damage can be done with a worm.

Genetically Modified Foods: To Label or Not To Label? Essay -- Genetic

Plants or animals that are created through gene slicing techniques of genetic engineering are called genetically modified organisms or, GMOs. This technique for creating plants and animals was first done in the 1970s. According to Non-GMO Project, â€Å"This experimental technology merges DNA from different species, creating unstable combinations of plant, animal, bacterial and viral genes that cannot occur in nature or in traditional crossbreeding.† (Non-GMO Project). This type of genetic modification has started to worry people. Companies are currently not required to label their products to inform customers that their product contains GMOs, and only a few of the many companies voluntarily label their products as GMO-free. Many such as, Journalist for the Santa Fe New Mexican, Jessica Emerson, feel like it is our right to know what companies are putting in the foods we are buying. There are others that disagree such as, physician and molecular biologist Henry Miller; he argues that it is unnecessary and unconstitutional for companies to be required to label their products. This has made quite a controversy. Products sold in Oregon that contain GMOs should be required to be clearly labeled so consumers can make healthy and informed choice on the foods they decide to purchase. The use of GMOs in foods has drastically risen in the United States. The Non-GMO project, a non-profit organization supports this by saying, â€Å"In the U.S., GMOs are in as much as 80% of conventional processed food†(Non-GMO Project). I decided to go shopping to try and find as many products as I could that were labeled GMO-free, I only found one product labeled GMO-free. Many people that purchase vegetables or fruits at the store are unaware that the foods they ar... ...ael. "Why GMO Labeling Won’t Increase Food Prices." Grist.org. Grist, 13 Oct. 2013. Web. 01 Dec. 2013. Miller, Henry I., and Gregory Conko. â€Å"Labeling of Genetically Modified Foods Is Unnecessary and Unconstitutional.† Genetic Engineering. Ed. Noà «l Merino. Detroit: Greenhaven Press, 2013. Opposing Viewpoints in Context. Web. 20 Nov. 2013. "Labeling Food and Ingredients Developed from GM Seed." Monsanto.com. Monsanto, Mar. 2013. Web. 02 Dec. 2013. â€Å"MRSA.† CDC. Centers for Disease Control and Prevention, 16 Sept. 2013. Web. 30 Nov. 2013. Weise, Elizabeth. â€Å"Washington State Voters Reject Labeling of GMO Foods.† USA Today. Gannett, 6 Nov. 2013. Web. 29 Nov. 2013. Tady, Megan. â€Å"Genetically Modified Foods Should Be Labeled.† Genetic Engineering. Ed. David M. Haugen and Susan Musser. Detroit: Greenhaven Press, 2009. Opposing Viewpoints in Context. Web. 20 Nov. 2013.

What it is like to be young and a teenager!

From when you turn from twelve to thirteen you have become a teenager; you have rights and responsibilities now!! At the age of a teenager you might think the whole world is in front of you, which it is, but there are big demands. When I became one I thought wow, I am a teenager, but now after being one for 3 and a bit years I am starting to realise that it isn't so great after all. I have heard that your teenage years are supposed to be some of the best years of your life, is that so? At the age of thirteen I have left primary school and have now faced the big girls and boys at high school. Two years passed and the work rate increased. In year nine the first of many challenges has started, your Key Stage 3 SAT's, at this time you think its ages until I sit in this same sports hall and do your real GCSE's which for some people, will be the start of a completely new chapter in the life of a teenager. So far in being a teenager all that has happened is a lot of work, but there are some privileges of being a teenager at the age of sixteen you have the right to go out and buy a packet of cigarettes legally, you are also able to have sex and even have and raise a baby, but it is not till you are eighteen that you are allowed to have a credit card, or buy alcohol legally. Are these good privileges? Or not? Just before you take the GCSE tests you have to decide what you want to do. The decision is your own and the correct one needs to be made, the pressures are now starting to become apparent and it can be a stressful time for some that feel that they have to perform well. There are others who are thinking if only I had listened that little bit or a lot extra in class instead of messing around or talking with friends, and of course there are the people who go into the hall and think I have nothing to lose I don't need many passes, because what I want to be you don't need grades and all I can do is my best. The pressure at this stage are not just on the pupils, the teachers may sometimes be as nervous, and they may be thinking did I teach the write things and did we revise the correct thing which will come up. These are all things to do with school, but you do usually spend 32 hours and 55 minutes in the place. At these ages peer pressure can become a big part of someone's life the things that stick in your head could be â€Å"Everyone's doing it†, â€Å"Its only one†, â€Å"Your such a loser†, â€Å"Chicken† and no one at this age wants to be left out and on there own. Is this really what being a teenager is like? So maybe being young isn't as good as it sounds!!

Poverty in the Philippines Essay

Divorce in the Philippines is planning to take over Filipino values and culture. It’s all over the news, the Philippine Congress is now pushing forward the Divorce Bill right after they have put forward the Reproductive Health Bill. This is exactly what I have been worrying about. Just a couple of weeks ago, when I attended our Baptist Convention Meeting here in the Visayas, this issue was brought up. And just as what I have stated, â€Å"RH Bill can also lead to the Divorce Bill† because they have the same proponents. I know lots of Evangelical Christians are pro-RH Bill. But what they don’t know is that the proponents of RH Bill are also the proponents of Divorce Bill. And now that they almost got what they want, they are now preparing for another wave of controversial bill which will open a highway for immorality and degradation of Philippine culture and religious standards and beliefs. Here is a list of the known supporters of RH Bill and Divorce. It is not what God wants. Since I started Biblical studies nothing in the Bible that will tell you that God favored and felt better for divorce. It was only allowed due to the hardheadedness of men. God did not made man and woman to be united and then separated if they got into some problems. If you fear the Lord and his commands, there is no way that you will agree on divorce. This is not what God wants. As simple as it is. Even if some pastor and theologians quantify it as a â€Å"necessary amputation† as far as I remember what my American Theology professor said, I would say that divorce is divorce, and God hates it. It was only men who wants it, not God. It is not the answer to the growing violence against women and children. Most divorce advocates gives emphasis on the growing children and women abuse. But I really do not see it as a solution for these problems. In fact it extends to the growing problem of immorality and sexually related diseases and problems such as unwanted pregnancies and sexually related diseases. And I believe that you will agree with me that these problems are a threat to women, children and even family. But why? Simply because people were given the so-called choice and chance to change while the fact is, it is where the so-called â€Å"rights† is abused. It is where many people make use of the right and abuse it for their own self-centered selfish quest for happiness and will only bring them to the same situation again and again and again. That’s why you will see people divorced not just once, nor twice, but multiple times. It gives a wider path to domestic problems. As I mentioned earlier this right has proven to be easily abused. And we are not actually giving people a solution to their problems, but a chance to repeat the same mistakes. Divorce is like a medicine†¦ but an unrecommended one. For example, there is a an abusive husband who have been divorced by his wife. This husband will then just look for another woman to abuse. While the woman if she’s the one having some problems, she will just look for another guy and if things will not get well, all she has to do is to apply again for divorce. Ridiculous isn’t it? It is just a picture. It gives a wider path for immorality and marital infidelity. Immorality. I guess this is not so much â€Å"in† nowadays. It’s something that most people don’t want to talk about except those that are of the religious sectors and religious people. I hate to say this but the Philippines have a steep moral degradation and that is why most of these divorce proponents put forward for various problems. Did we not learn from the US? Did the stats of violence against women and children dropped by the use of divorce law? We talk much about the positive things that we can get from the divorce law, while the negative effects far out weighs the positive. Here’s the summary of the advantages of divorce:

Characteristics of Women That Attract Men Essay

2.0 RESEARCH METHODOLOGY 2.1 Research Sample We were searching for a characteristics of woman that attract men. After all, we distributed the questionnaire among Labuan Matriculation Colleges’ student (LMC) 2012/13 to get the specific answer. The questions are universal which can be answer by both gender, male and female. All the respondent are majority from Sabah and Sarawak, while some are from Peninsular Malaysia who studying in LMC. In this research, we were only focusing on teenagers, from age 19 to 20 as we believed, most individu starts to get serious in searching a life partner around this age circle. 2.2 Research Instrument Categorical and multiple-choices style of questions had been used in this questionnaire. Categorical style are most commonly use to determine the respondent’s life background, while, in order to prove the objectives, multiple-choices answer are given to help the respondents to answer bunch of questions. 2.3 Research Procedure After finished discussing the research’s topic, we combined all the ideas from the four heads of us to one paper. We justified the questions to be more specific and most important is , the questions must be interesting and easy to be answer. This is because, based on our own experienced, people will easily get bore when answering a question that sounds boring and difficult to answer, especially those question which you have to state a reason for some answer. So, in order to make sure the surveys is in the bag, we try to make it simple and easy as we can. Afterwards, we submitted the softcopy to our subject’s lecturer and wait for her approval. Next, we distributed the questionnaires to all the respondent in LMC during rest hour at cafeteria. There were 90 copies of questionnaire. 45 answered by male students age 19-20 while the rest answered by the opposite sex. It only took about 3minutes for each person to answer. Since both male and female can answer all the questions, we can see, there are a lot of different opinion between these two genders. Finally, making analysis is the hardest step to do when we have to check the answers one-by-one. However, it become easier when each of us showed cooperativity and helping each other.

Forecasting and New Car Registrations

1. There are 3 primary ways to achieve competitive advantage. Provide an example, not included in the text of each. Support your choices. 2. Why should one study operations management? 3. Explain how higher quality can lead to lower cost. 4. What happens to our ability to forecast as we forecast for periods farther into the future? 5. What are the differences between goods and services? 6. Explain the 3 basic functions of a firm. 7. How must an operation strategy interact with marketing and accounting? 8.Kleen carpet cleaned 65 rags in October, consuming the following resources: Labor Solvent Machine rental520 hours at $13 per hour 100 gallons at $5 per gallon 20 days at $50 per day a)What is the labor productivity? b)What is the multifactor productivity? c)What is the percentage change if Kleen Carpet can reduce the solvent used by 20 gallons? 9. Data collected on the yearly registration for a seminar at GIPS are shown in the following table: Year 1234567891011 Registrations (000)46 4510879121415 a)Develop a 3-year moving average to forecast registration from year 4 to year 12. )Estimate demands again for years 4 to 12 with a weighted moving average in which registration in the most recent year are given a weight of 2 and registration in the other 2 years are given a weight of 1. c)Graph the original data and the two forecasts. Which of the two forecasting methods seems better? 10. City Government has collected the following data on annual sales tax collections and new car registrations. Annual sales tax collections (in millions)1. 01. 41. 92. 01. 82. 12. 3 New car registrations ( in thousands)10121516141720 Determine the following )The least square regression equation. b)Use the results of part a, find the estimated sales tax collections if new car registrations total 22,000. 11. How does the operation management strategy change during a product's lifecycle? 12. How does fear in the work place or class room inhibit learning? 13. What is the difference between production and productivity? 14. Pepsi is a global product; does it mean Pepsi is formulated the same way throughout the world? 15. Identify how changes in the internal environment affect the OM strategy for a company.For instance discuss what impact the following internal factors might have on OM strategy: a)Maturing of a product. b)Technology innovation in the manufacturing process. c)Changes in product design that move disk drives from 3 1/2-inch floppy disks to CD-ROM drives. 16. Identify how changes in the external environment affect the OM strategy for a company. For instance discuss what impact the following internal factors might have on OM strategy: a)Major increase in oil prices. b)Fewer young prospective employees entering the market. c)Inflation versus stable prices. d)Legislation moving health insurance from a benefit to a

Why were the police unable to catch Jack the Ripper?

There are several factors that can be used for why the murderer was never caught, firstly: There were no witnesses, whether this was part of the murderers plan, to find someone without people, or to kill them somewhere isolated then dump their body elsewhere is unknown. It could be accounted to luck that there were no witnesses, and the people who did come forward to give evidence gave several different descriptions, which contradicted each other. If there was someone who witnessed the murder, maybe he would have been caught. The victims were prostitutes; people who usually avoided the police anyway. They were easy victims for several reasons. Firstly, they had a dangerous profession anyway, they risked being beaten up and murdered every night, so maybe with a serial killer out their, they didn't see their chances as any lower or any higher of being murdered. They also really needed the money, to risk going out every night, they were very poor, so they still went out. They would take clients to a place that was isolated from other people, it made it easier for the murder, as noone would hear them, and there would be no witnesses. Also prostitutes were often drunk and vulnerable anyway, making them easier to silence. Because the killer did not know his victims, it made it harder to solve. It is the same case today with the Washington Sniper. If you target people you have no connection with, then there is no way to relate you to them. You cannot ask other friends or family about other people they knew in their life who might kill them, or who is suspicious. It gives the police no link, so they don't have much to follow up on. Other than he was killing prostitutes, and there were hundreds in London. Also, this was one of the first big cases detectives of a poorer area (Whitechapel) had to deal with, their usual methods included rounding up suspicious looking suspects, and patrolling the poorer areas. This was obviously not going to work in this case. Because the Ripper had to blend in, if he wanted prostitutes to go with him. Also, the Ripper's gruesome mutilation was not what the police were used to dealing with, it was not a domestic murder case, therefore they had no leads, but the Ripper was striking at random prostitutes, therefore they had no idea where he could be. There was also a lot of misleading evidence. There were hundreds of letters sent in claiming to be from Jack the Ripper. Only 3 of which are considered to be anywhere near liable. Two of which are from the same person, staring with â€Å"Dear Boss† for these two letters, it could have been sent in straight after reading the newspaper, or made up from a journalist trying to promote the story. The other one however, came with half a kidney, that looked likely to be taken from one of the victims. Other false leads like Leather Apron were also off-putting. The anti-semantic writing on the wall, found near Catherine Eddowes's body, could have also have been a great help, or a disaster. If it was a clue, it was wiped off the wall, and therefore they could not use it to compare handwriting. Or it could be false, leading to riots. The Jews in the past had been blamed for a lot of murders, as they were widely disliked, but still held a lot of money and power in general. Any mention of the killer being Jewish would have lead to riots, which the police did not want on top of trying to catch the killer. It can be said they did their best using what evidence they had. There was no forensic evidence, finer prints were not used until 1901, there was no DNA evidence, and photography in this case had only just started, it made the police's job finding evidence difficult with so little of anything to go on. If they had had DNA evidence, more accurate records of criminals and better security (cameras in the streets) then maybe he would have been caught. But because of limited evidence, of the killer leaving no weapons behind, and clothing and possession were later accounted for, the police had little to go on. The police were also under a lot of pressure from the press and politicians. With the press thinking up of one story after another, it maybe gave the police too many useless leads that wasted their time. The media was constantly bombarding the police force: their usual methods were slow, and not very effective. However now, they were under pressure to catch someone, they had to speed things up, which would have resulted in several wrong suspects, and evidence. They were expected by the public to catch the ripper, after 5 murders that were not prevented after heightened security from the police, it made the public and media put more pressure on. The killings stopped, there are several suspected reasons for this. However, if the murders had continued, it is entirely feasible that someone would have eventually caught him, with so few prostitutes on the street, and so many metropolitan police. Some suspected reasons are: The police were getting to near to catching him, to risky to carry on. He died, or was imprisoned for another crime. Many deaths went unreported to the police. Moved to another part of the UK, with not as good as the metropolitan police force, or just simply moved away. Or moved to another country. After the ripper murders, there were several murders in America, with the same pattern. Because of no international links, noone ever linked the two together. After committing so many crimes and knowing the end was near, killed himself, this too would have carried no concern with the press. He had killed enough people. This one is most unlikely. It has been observed with other psychopaths and serial killers, they only stop when they have been caught, or die. It was probably not as much of a lust as a fixation. They caught the Ripper, but it infact was connected to the royal family or government, and it would have been a huge public scandal, and uproar would ensure, so they never told the press, or anyone else in the police force he was caught.