Computer Security Essay Example | Topics and Well Written Essays - 750 words - 4

Computer Security - Essay Example Keeping in mind the situation described above publication of a patch and providing technical information about vulnerability during disclosure can enable user’s to take protective and preventive action. CERT, a federally funded quasi government organization, is a key player in the domain of vulnerability disclosure and prioritizes in the publication of preventive measures, such as a patch, in their disclosures. There are certain issues that revolve around the disclosing of vulnerability information. These are regarding the timing of the release of patches which is made critical once vulnerability is disclosed. However the development of these patches takes time. This component clashes with that of instant disclosure, which leaves users defenseless against attackers who can exploit the disclosed vulnerability in the time that it takes for a patch to be released. These are the two critical dimensions that an optimal disclosure policy addresses. For the development of an optimal patch notification policy it is important to estimate the attacker’s and vendor’s behavior. If the vendors do not act quickly to instant disclosure then the formulation of a policy which incorporates this behavior will be strongly discouraged socially unfavorable. But even if vendors develop a patch quickly there lays a need to know how the attacker’s probability of attack changes with the disclosure, and with the patching. Other critical elements that the policy incorporates are a thorough investigation of vulnerabilities that are more likely to be exploited by attackers and hence require immediate attention. These are the ones that the vendor’s need to concentrate on developing patches for. Keeping in mind all these area’s of concern we develop a optimal patch notification policy that balances the issue’s mentioned above. Simply because a vendor releases a patch more quickly due to an early disclosure does not necessarily make this action optimal. Using a game theoretic model Arora, Telang and Xu (2003) show that neither instantaneous disclosure nor secrecy policy is optimal. An optimal patch publication policy depends upon underlying factors like how quickly a vendor’s response is in releasing patches, and how likely attackers are to find and exploit unpatched vulnerabilities. Q2: Here we consider the incentives of the attackers as well as the parties listed previously. What are the incentives of attackers? When we look at the internet we see how it has developed into a global system of interlinked computer networks which have made possible the exchange of information between millions of organizations. It has made possible new forms of social interactions as well as means to probe them. The internet is a unique tool for studying the development and the organization of a complex system. This is why numerous attackers are attracted towards the use of methods to hack into and manipulate various online systems. T here are many classifications of hackers based on the incentives behind their attacks. There are the early gentle hackers, who break into systems to demonstrate their skills. Then there are the ‘black hats’, which might have been gentle hackers at some point but then are motivated to make money as part of an explosively booming business based on ever-present internet insecurity. Moving

Analysis of Literary Criticism about Oranges of Gary Soto Research Paper

Analysis of Literary Criticism about Oranges of Gary Soto - Research Paper Example In his narrative, the poet actually steps in adolescence when he buys something for her girl by taking a chance. He offers an orange and a nickel to the saleslady for the bar of chocolate that the girl chooses. This is a critical point in the life of the boy and the climax in the poem because it creates uncertainty whether the saleslady will accept it or not. Once his offer is accepted, the boy comes out of the superstore triumphantly and enjoys his time with the girl. Although his courage is impressive, the risk was also a safe and intelligent bet: If the saleslady had refused to honor his orange for payment, he would still have the two oranges to share with the girl on their way home. Either way, he proves himself and impresses the girl which was the goal in the first place, and he is rewarded for his bravery by being allowed to hold her hand on the walk home. (White, 123) The poem is divided into two parts- before and after going in the superstore. The tone of the poem and the att itude of the boy have drastically changed. The tension or coldness between them is replaced by warmth and the scenery transforms dramatically. â€Å"Someone might have thought/ I was making a fire in my hands.† (55-56) the poet’s wish has been granted and suddenly the dullness of December as signified by fog and old coats is brightened up with the oranges. The color of orange stands out sharply in contrast to gray December; in fact it even looks like fire. Fire is the antithesis of frost, which was mentioned in the first part of the poem. Frost and crackling ice represent the absence of emotions or passions; but by the end of the poem, the boy earned warmth which is represented by the color of the oranges. In the first part of the poem, when the boy is entering the superstore, he notices a â€Å"used car lot† (18) which represents emptiness and stillness. The emotional state of the boy is empty and still. This condition is transformed in the second part of the p oem where â€Å"A few cars hissing past† (43) denote the movement or transition in the stage of life of the boy. He moves on in life without looking back at it with awkwardness, as he â€Å"finds a new sense of confidence and independence.†(White, 121) The poetic language used in the poem is simple and based on a trivial, everyday experience of a young boy. The language is also kept simple because it is stored in the memory of a person, when he was young- merely 12 years old. His memories are captured in a rather simple manner that makes it easy for the readers to compare or relate their experiences with his. Imagery and symbolism are used extensively by Soto to describe the entire scenery and situation. The boy recalls his vivid memories of walking for the first time with a girl. This shows how important it is for anyone at this age to feel love for the first time. The poet is aware of the external scenes and captures them in his memory- he is aware of all the sights and sounds of the gray December and slowly he starts noticing the various colors that light up his mood and his surroundings. The yellow light in the porch, the color of rouge on the cheeks of the girl, newly planted trees are some of the things that visually describe the scenery. Apart from this, sound imagery also brings to life the entire scene to the readers, as they read the phrases: Frost cracking; a dog barked; the tiny bell; and a few

Dyslexia :: essays research papers

Dyslexia For Children Jimmy’s Story: Jimmy was a 10 year old boy who had done well in school through the third grade. Once he got the fourth grade he was having trouble following the readings as fast as the other children could. He was mixing up words and confusing letters. He was very upset so he told his mom and she decided to check out what was happening. She took Jimmy to the doctor and the doctor had Jimmy take some tests and the doctor discovered that Jimmy had dyslexia. This didn’t mean that Jimmy was stupid, it just meant that he had trouble reading certain words. Jimmy would have to see a special teacher to fix his problem. Facts about dyslexia: 1.Children who are dyslexic are not stupid 2. Dyslexic is a word used to describe children who have trouble putting words together or spelling 3. Although many people may think so, dyslexic people do not see things backwards. 4. Many dyslexic children seem to have good creative skills like drawing, painting or playing a musical instrument. 5. Dyslexia can have more of an affect on one person than it does another or it may have less of an affect on one person or the other. 6. Experts think that 10% of all children have some degree of dyslexia and only 4% have a really bad case of dyslexia. This means that if you have dyslexia, you are not the only one. There are many other children who work with dyslexia everyday. 7. No two dyslexic children are alike. Children who have dyslexia are just like everyone else except they have to work through their reading and writing a little harder. 8. Many famous people have worked through dyslexia for example: Thomas Edison, the inventor of the light bulb; Winston Churchill, Prime Minister of Great Britain and Woodrow Wilson, President of the United States of America.(1) Causes of dyslexia: There is no real answer for the cause of dyslexia. Dyslexia is not contagious so you can’t get it from someone else, it is not in something that you eat and it is not a cough or the flu so it won’t hurt you if you have it. Doctors think that dyslexia runs in families, so it might get passed down from your mom or dad when you are born.(1) Solving dyslexia: The best known solution to dyslexia is working with a special teacher and working hard. There are some medicines that are available (ritalin and adirol) that will help you concentrate better but the way to getting past dyslexia is all in the hard work.

Milo 3 in 1 Substitute and Market Structure

Milo 3 in 1 is a normal product. It is a convenience product to the consumer which comes with low price and easy to consume. The product comes with high quality and safe to consume. Complements for Milo 3in1 are Milo sejuk(ice), Milo Powder and Milo Ready to Drink. Milo sejuk (ice) is an instant ice Milo which just adds cold water to the powder. The powder of Milo sejuk soluble easier with the cold water even without hot water which normally used for melting powder or make them become more soluble.Milo Powder is an ordinary Milo powder with no extraordinary add-ons or plain Milo. Consumer needs to add sugar, condensed milk or creamer themselves with the powder. Normally, Milo powder is packaged in large Milo tin. Milo Ready to Drink is Milo in cans and small package. Consumer buys and consumes straightforward because the Milo inside it is ready to be drink. Substitutes for Milo 3 in 1 are Horlicks, Ovaltine, Vi-Co, Nescafe. Horlicks and Ovaltine is a malted milk hot drink. It is made from malted barley and wheat flour.It comes with different taste and smell compared with Milo which is made from chocolate. It served as a beverage same with Milo and fortified with vitamins and minerals. Vi-Co is commonly known as the straight competitor to Milo. It serves the same hot chocolate milk as Milo. Nescafe serves different kinds of coffee. They start with coffee powder like Nescafe Classic, Gold and 3in1. They also serve a variety of coffee in cans like latte, mocha and cappuccino. Moreover, they have localized product like Nescafe Ipoh White Coffee.Milo 3in1 belongs to monopolistic competition market. It comes as one of the product differentiation by Milo. There are other products such as Milo sejuk, Milo powder and Milo Ready to Drink. It has many sellers in Malaysia and buyers who prefer Milo 3in1 compare to other complements and substitutes. It is the price makers for the same kind of product in the market since the it sells the most compared to others. It also spen t a lot of money on advertisements such as Milo – Fields of Barley TVC and Milo TV: Malaysia Boleh.

7 Fascinating Facts About Fungi

What do you think of when you think of fungi? Do you think of the mold growing in your shower or mushrooms? Both are types of fungi as fungi can range from unicellular (yeasts and molds) to multicellular organisms (mushrooms) that contain spore-producing fruit bodies for reproduction. Fungi are eukaryotic organisms that are classified in their own Kingdom, called Fungi. The cell walls of fungi contain chitin, a polymer that is similar in structure to glucose from which it is derived. Unlike plants, fungi dont have chlorophyll so are not able to make their own food. Fungi typically acquire their nutrients/food by absorption. They release digestive enzymes into the environment that assist in this process. Fungi are very diverse and have even contributed to improvements in medicine. Lets explore seven interesting facts about fungi. 1) Fungi Can Cure Disease Many may be familiar with the antibiotic known as penicillin. Did you know that it was produced from a mold that is a fungus? Around 1929, a doctor in London, England wrote a paper on what he called penicillin which he had derived from the Penicillium notatum mold (now known as Penicillium chrysogenum). It had the ability to kill bacteria. His discovery and research started a chain of events that would lead to the development of many antibiotics that would save countless lives. Similarly, the antibiotic cyclosporine is a key immunosuppressant and is used in organ transplants. 2) Fungi Can Also Cause Disease Many diseases can also be caused by fungi. For example, while many associate ringworm with being caused by a worm, it is caused by a fungus. It gets its name from the circular shape of the rash produced. Athletes foot is another example of a disease caused by fungi. Many other diseases such as eye infections, valley fever, and Histoplasmosis are caused by Fungi. 3) Fungi Are Vital to the Environment Fungi play a key role in the cycle of nutrients in the environment. They are one of the main decomposers of dead organic matter. Without them, the leaves, dead trees, and other organic matter that build up in the forests wouldnt have their nutrients available for other plants to use. For example, nitrogen is a key component that is released when fungi decompose organic matter. 4) Fungi Can Last for a Long Time Depending on the conditions, many fungi, like mushrooms, can be dormant for extended periods of time. Some can sit dormant for years and even decades and still have the ability to grow under the right conditions. 5) Fungi Can Be Deadly Some fungi are toxic. Some are so toxic that they can cause instant death in animals and humans. Deadly fungi often contain a substance known as amatoxins. Amatoxins typically are very good at inhibiting RNA polymerase II. RNA polymerase II is a necessary enzyme involved in the production of a type of RNA called messenger RNA (mRNA). Messenger RNA plays an important role in DNA transcription and protein synthesis. Without RNA polymerase II, cell metabolism will stop and cell lysis occurs. 6) Fungi Can Be Used to Control Pests Some species of fungi are able to suppress the growth of insects and nematodes that may cause harm to agricultural crops. Typically the fungi that can have such impacts are part of the group called hyphomycetes. 7) A Fungus Is the Largest Living Organism on the Planet A fungus known as the honey mushroom is the largest living organism on the planet. It is believed to be about 2400 years old and covers over 2000 acres. Interestingly enough, it kills trees as it spreads. There you have it, seven interesting facts about fungi. There are many additional interesting facts about fungi that range from fungi being used to produce the citric acid used in many beverages to fungi being the cause for zombie ants. Some fungi are bioluminescent and can even glow in the dark. While scientists have classified many of the fungi in nature, it is estimated that there are vast numbers that remain unclassified so their potential uses are likely numerous.

Prince s Influence On Society - 1293 Words

. During the 1980s, the way Americans perceived homosexuality, race, and violence was challenged. In response, Prince’s eccentric and extravagant music style and attire dismantled conventional gender barriers of what it meant to be masculine and feminine in American society. Therefore, his musical creations set an example by pushing the limits of authenticity and self-expression. Prince’s fearless dedication to breaking down conventional expectations of style, music, gender norms, and conformity can be seen in his vocals, instrument choice, and lyrics. In the late 1980s, Prince was a music icon who blended funk, soul, pop, and hip-hop and presented his work in an androgyny atmosphere to advocate for racial and gender equality. His musical creations and appearance had disrupted the societal confines that fenced in the minority groups and pushed the limits of what it meant to be a black man. Prince’s distinct attire, extravagant performances, and persona helped con tribute to a new music era of funk-rock and challenged the taboo concepts of the 1980’s. Prince’s musical work impacted society by encouraging wildly free and creative behavior during a time where it was not acceptable to be who you were. In this paper, I will analyze the auditory significance of two of Prince’s songs: â€Å"If I was your girlfriend† (1987) and â€Å"I Would Die 4 U† (1984). Analysis for both songs were based on music videos and a scene from Prince’s film, Purple Rain. In addition to these songs, Prince’sShow MoreRelatedGender Roles Of Men And Women1362 Words   |  6 PagesFairy Tales Fairy tales have been around for generations. They are a way to express the idealistic realities of society. In most fairy tales, the roles of men and women reflect the way men and women are portrayed in reality. 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Many reforms started to take place which included slavery and woman s rights. This age brought about American literature which was free from European influence and ties. The writers during the Romantic Age wrote mainly about the person, they included clear and concise descriptions of people and nature. Many writers like Poe wrote about supernatural events like the devil, evil,Read MoreFairy Tales By The Brothers Grimm1381 Words   |  6 Pagesa young girl with magically long hair who is isolated away from the world in a tall tower after an evil fairy takes her away from her parents shortly after she is born. Rapunzel experiences love for the first time when she is found by a charming prince but struggles to keep their nightly affairs a secret from the wicked fairy that controls her, Frau Gothel. 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A long list of unisex names from which to choose. Sifting through my baby book, it is easy to see tell that my parents had no clue what gender their new baby would be. That is, until I came into the world in a flurry of activity and someone—probably the doctor—announced â€Å"It s a girl!† My grandmotherRead MoreThe Reformation And Its Impact On The Early Modern Period1622 Words   |  7 Pagesreligious and political wars. Before the beginnings of the reformation political discourse was dominated by different catholic influences at the hands of philosophers and writers such as Sir Thomas More. More s use of political discourse came in the form of Utopia, a piece of writing that was highly critical of the King of England and the country itself due to More s personal experience as a counsellor1. Although Utopia was published before the Reformation, it is clear that More had an idea on

Struggling With Mental Health Disorders - 1462 Words

Robin Williams: Struggling with Mental Health Disorders Mental health disorders are becoming more and more prevalent in the United States today, especially since the world consists of more prestigious medical professionals that can diagnose individuals. What does a mental health disorder entail and how can one be effectively diagnosed? Many people do not realize they are suffering from a mental illness, which can sometimes be extremely detrimental to a person’s health and can eventually lead to death if not treated. Extensive research has provided the world with more knowledge on the causes, symptoms, and treatments of several mental health disorders with the help of the DSM-5. Any individual can be diagnosed with a mental health disorder, even those â€Å"perfect† celebrities people idolize. Robin Williams, a well-known actor and comedian, took his own life in August 2014 from the detrimental effects of bipolar disorder and depression. Robin Williams was a prestigious actor and comedian who recently took his own life on August 11, 2014. Many people probably did not expect this occurrence from his upbeat and hilarious personality he portrayed to his followers. According to The National Alliance on Mental Health, approximately 2.6 percent of American adults live with bipolar disorder, about 6.1 million people (Communities Digital News). Several people who suffer from bipolar disorder and depression tend to hide it from their loved ones. Bipolar disorder may have stimulated hisShow MoreRelatedStigma Surrounding Mental Health Disorders1059 Words   |  5 PagesThe Stigma Surrounding Mental Health Disorders Mental health disorders affect just about every single person in the world. These disorders come in many forms and severities. A couple of these disorders are depression, anxiety, eating disorders, posttraumatic stress disorder, and many more. In the United States alone 43.8 million, 1 in 5, adults suffer from a form of a mental health disorder. About 21.4%, or 1 in 5 juveniles ages 13-18, suffer from mental health disorders. Of people in our countryRead MoreHigh School Should Be The Time Of Your Life1168 Words   |  5 Pageshas said â€Å"Estimates are that 25% of the 150 million child visits per year for primary health care (non-mental-health and other specialties) have a psychological problem associated with the presenting problem† (pg.604). These numbers are shocking for some. This percentage may be even higher. With mental illness, numbers and data is altered because of the stigma that comes along with talking about mental disorders. Imagine having a stomach ache and n ot wanting to tell your parents you’re not feelingRead MoreEating Disorders : A Young Woman Sits At The Table872 Words   |  4 Pagesbehaviors have escalated into widespread suffering of eating disorders. 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What needs to happen to create change? These questionsRead MoreThe Reasons People Become Homeless909 Words   |  4 Pageshomelessness annually (Health Care). Before families or individuals become homeless, they go through a series of devastating occurrences that are mostly unintentional and sudden. Some people become homeless from causes such as a family dispute, divorce, substance abuse, loss of a job, or gambling. While all of these issues and many others are contributing factors in homelessness, anyone can become homeless at any time, and some of the most prominent causes are mental disorders, domestic violence, and