Custom essay writing
Monday, August 24, 2020
The Advantages and Disadvantages of Fiber Optic Cable vs. Coaxial Cable
Presentation Wires assume a significant job in transmitting electrical vitality and signals between various areas. There are various kinds of wires that change from each other relying upon their qualities and other physical viewpoints. This paper looks to talk about the contrasts between fiber optic links and coaxial links, expounding on the favorable circumstances and hindrances of each type.Advertising We will compose a custom exposition test on The Advantages and Disadvantages of Fiber Optic Cable versus Coaxial Cable explicitly for you for just $16.05 $11/page Learn More Fiber Optic Cable A fiber optic link comprises of either a plastic or a glass center, which passes on light encased inside a glass cladding. Light is guided through the fiber attributable to the lower refractive record of the material as it additionally mirrors the getting away from light profoundly (Higuera, 1998). Preferences of fiber optic links Fiber optic links have constrained sign misfortune for each unit separation secured. In such manner, this kind of links can cover significant distances and have restricted impact on the nature of transmission. With high web speeds being a factor for thought in the contemporary world, fiber optic link is increasingly solid in view of its upkeep of the sign. Fiber optic links have exceptionally high limit, which implies they can pass on high information rates at some random time. On account of the cableââ¬â¢s innovation that utilizations light, the link is additionally ready to transmit at high speeds. This makes it increasingly solid and effective over other link types. Fiber optic links are likewise resistant to outside impedance, which improves further on their unwavering quality. Vibrations and different clamors have little impact on the exhibition of the link (Higuera, 1998). Burdens These links are costly contrasted with different sorts of links. The materials utilized in the production of fiber optic links are expensive and just made-to-q uantify. This is especially normal of any new advances (Higuera, 1998). The general weakness of fiber optic links to strain and temperatures influences the presentation nature of this sort of links. This influences the yield signals as a result of the intrinsic mistakes (Higuera, 1998).Advertising Looking for exposition on other innovation? We should check whether we can support you! Get your first paper with 15% OFF Learn More Coaxial Cable Coaxial links include a center wire, just as an interlaced foil material that covers the internal wire (Reynders, Mackay Wright, 2005). A protecting material that covers the focal lying wire isolates these directing materials. Another encasing covers the external foil. Points of interest of coaxial links This link is less expensive than the fiber optic link and, therefore, it is exceptionally reasonable. Most fair size workplaces and neighborhoods can gain this link for their web needs. Coaxial links can be utilized for various purposes. This ex pands their general convenience. Among the various employments of this sort of link incorporate transmitting voice, information, just as video signals. The links are additionally simple to introduce around structures (Reynders, Mackay Wright, 2005). Weaknesses of Coaxial Cables Coaxial links are harmed without any problem. This influences the comfort angle, while additionally including costs as far as fixes and new acquisitions. Introducing thick coaxial link is a costly exercise, especially where it is required to be pulled in the middle of existing link channels. Coaxial links work with connectors, which can be expensive to gain (Reynders, Mackay Wright, 2005). End Fiber optic and coaxial links are utilized in playing out similar jobs, particularly in transmitting information and signs. Their utilization has essentially expanded with the appearance of the web. Fiber optic links can convey huge limit of information at high rates. They are likewise least influenced by outer impedanc es, for example, clamor or vibration. Coaxial links, then again, are more affordable and can undoubtedly be worked with during establishment. Be that as it may, fiber optic links are costly to get and defenseless against stress impedance. Coaxial links on their part are powerless to harms and their thicker renditions are hard to introduce. References Higuera, J. M. L. (1998). Optical sensors. Cantabria: Ed. Universidad de Cantabria.Advertising We will compose a custom exposition test on The Advantages and Disadvantages of Fiber Optic Cable versus Coaxial Cable explicitly for you for just $16.05 $11/page Learn More Reynders, D, Mackay, S. Wright, E. (2005). Pragmatic mechanical information interchanges: Best practice methods. Burlington, MA: IDC Technologies. This article on The Advantages and Disadvantages of Fiber Optic Cable versus Coaxial Cable was composed and presented by client Ethan M. to help you with your own examinations. You are allowed to utilize it for research and reference purposes so as to compose your own paper; be that as it may, you should refer to it as needs be. You can give your paper here.
Saturday, August 22, 2020
Catherin the great essays
Catherin the extraordinary expositions History 120, Section 4 Russell Smith One of the most fascinating, persevering and influential individuals to beauty the pages of history during the eighteenth century was Catherine II, Empress of Russia. Students of history have not generally been so kind to her memory, and very frequently one peruses records of her private life, disregarding her numerous accomplishments. The tales of her relationships have been excessively confused and can be followed to a bunch of French journalists in the years following Catherine's passing, when Republican France was battling for its life against an alliance that included Russia. Catherine was conceived Sophia Augusta Frederika of Anhalt-Zerbst on April 21, 1729 in Stettin, at that point Germany, presently Poland. Her dad, Prince Christian Augustus of Anhalt-Zerbst, was a high-positioning official in the Prussian Army and a minor ruler among the realms in Germany. He wedded the a lot more youthful Princess Johanna of Holstein-Gottorp. A long time previously, Johanna's sibling Karl August of Holstein-Gottorp had gone to Russia to wed the Princess Elizabeth Petrovna. Anyway the Prince passed on of little pox, leaving Elizabeth heart-broken. Elizabeth's sister, Anna brought forth a child named Peter Ulrich, anyway disaster by and by struck as Anna's kicked the bucket of tuberculosis three months in the wake of bringing forth Peter. Subside, who in the long run became Tsar Peter III, was the main enduring male descendent and the possibly beneficiary to the seat of Russia after his dad kicked the bucket. In November 1741, Elizabeth held onto the seat with the assistance of the Imperial Guards, and officially pronounced her nephew Peter beneficiary to the seat. Diminish was currently 14 years of age, and it was the ideal opportunity for him to discover a lady. Elizabeth had consistently recollected the group of her dead life partner with affection, and picked Sophie as the lady of the hour to be. The Empress Elizabeth appeared to have taken a moment jumping at the chance to Sophie at an early age. Sophie started to get familiar with the Russian language and ... <!
Thursday, July 16, 2020
Best Books About Writing
Best Books About Writing While we at the Riot take some time off to rest and catch up on our reading, were re-running some of our favorite posts from the last several months. Enjoy our highlight reel, and well be back with new stuff on Monday, January 5th. This post originally ran August 4, 2014. _________________________ As a writer, there are some books that I remember fondly, and think, yeah, those are the books that made me want to be a writer, or those were the books that helped guide my writing. Sure, the novels that stopped my heart dead on the page, or made me laugh out loud inappropriately in the library certainly influenced me, but there were books about writing that I drank in and felt refreshed by, and knew that one day, theyâd prove useful. Here are some of my favorites. Writing Down the Bones, by Natalie Goldberg. Is there a writer who doesnât know of Goldberg or this book? More than 20 years old, this book marries the practice of writing with meditation. I read this as a shy, insecure teenager, and it felt like Goldberg was speaking only to me. Her anecdotes about writing, the prompts, and the gentle guidance in the book were the perfect combination of encouragement that a young writer needed. I still return to this book, and her others. Bird by Bird: Some Instructions on the Writing Life, by Anne Lamott. Come on, did you really think the list wouldnât include this one? Her âbutt in chairâ advice has been repeated in my head many times, especially during the writing of my thesis. Her unpretentious, fresh attitude and basic, straightforward writing makes this one of my favorite books on writing. Naked, Drunk, and Writing: Shed Your Inhibitions and Craft a Compelling Memoir or Personal Essay, by Adair Lara. As a nonfiction writer who has an internal censor that would put most school boards to shame, this book was instrumental in getting me to just write. Just get it on the page. The examples, prompts, and guidance in the book are highly applicable to everyday craft, and can be used for short or long works. The Courage to Write: How Writers Transcend Fear, by Ralph Keyes. This book should be read by all writers, in my opinion. Who hasnât written something, and then immediately thought, oh crap, I didnât mean to write that. It takes guts to write, and itâs scary to share your writing with other people. This book gives concrete tips on how to overcome various fears that can lead to writerâs block, and shows you that youâre not alone. The Artistâs Way, by Julia Cameron. When I first decided to take the plunge and focus on writing and apply to MFA programs, I was given this book by a friend who said she read it when she was my age. I was terrified of choosing the creative life, filled with self-doubt, and more than willing to self-sabotage. This book, though at times a bit corny, reassured me that it was okay to choose to be an artist. Morning pages, writing exercises, and a sort of Zen-introspective path through creativity made this book an all-time favorite of mine. What are some of your favorite books on creativity or writing? ____________________ Expand your literary horizons with New Books!, a weekly newsletter spotlighting 3-5 exciting new releases, hand-picked by our very own Liberty Hardy. Sign up now! Sign up for True Story to receive nonfiction news, new releases, and must-read forthcoming titles. Best Books About Writing Expand your literary horizons with New Books!, a weekly newsletter spotlighting 3-5 exciting new releases, hand-picked by our very own Liberty Hardy. Sign up now! ____________________ As a writer, there are some books that I remember fondly, and think, yeah, those are the books that made me want to be a writer, or those were the books that helped guide my writing. Sure, the novels that stopped my heart dead on the page, or made me laugh out loud inappropriately in the library certainly influenced me, but there were books about writing that I drank in and felt refreshed by, and knew that one day, theyâd prove useful. Here are some of my favorites. Writing Down the Bones, by Natalie Goldberg. Is there a writer who doesnât know of Goldberg or this book? More than 20 years old, this book marries the practice of writing with meditation. I read this as a shy, insecure teenager, and it felt like Goldberg was speaking only to me. Her anecdotes about writing, the prompts, and the gentle guidance in the book were the perfect combination of encouragement that a young writer needed. I still return to this book, and her others. Bird by Bird: Some Instructions on the Writing Life, by Anne Lamott. Come on, did you really think the list wouldnât include this one? Her âbutt in chairâ advice has been repeated in my head many times, especially during the writing of my thesis. Her unpretentious, fresh attitude and basic, straightforward writing makes this one of my favorite books on writing. Naked, Drunk, and Writing: Shed Your Inhibitions and Craft a Compelling Memoir or Personal Essay, by Adair Lara. As a nonfiction writer who has an internal censor that would put most school boards to shame, this book was instrumental in getting me to just write. Just get it on the page. The examples, prompts, and guidance in the book are highly applicable to everyday craft, and can be used for short or long works. The Courage to Write: How Writers Transcend Fear, by Ralph Keyes. This book should be read by all writers, in my opinion. Who hasnât written something, and then immediately thought, oh crap, I didnât mean to write that. It takes guts to write, and itâs scary to share your writing with other people. This book gives concrete tips on how to overcome various fears that can lead to writerâs block, and shows you that youâre not alone. The Artistâs Way, by Julia Cameron. When I first decided to take the plunge and focus on writing and apply to MFA programs, I was given this book by a friend who said she read it when she was my age. I was terrified of choosing the creative life, filled with self-doubt, and more than willing to self-sabotage. This book, though at times a bit corny, reassured me that it was okay to choose to be an artist. Morning pages, writing exercises, and a sort of Zen-introspective path through creativity made this book an all-time favorite of mine. What are some of your favorite books on creativity or writing?
Thursday, May 21, 2020
Critical Analysis- the Evolutionary Origins of Friendship...
Title Seyfarth, R. and Cheney, D., 202. The evolutionary Origins of Friendship. Annual review of psychology, 63, p.153-177 Topic In the evolutionary origin of friendship, Robert and Dorothy tell us how genetic relatedness affects friendship in Horse, Elephants, Dolphins and Chimpanzees. They present their article in which they share their argument and analyse as biologists. Both authors argue that individual of the same sex could have strong friendship that did not have to do with reproduction, and the relationship between human can affect their happiness and longevity; however, their opinions are based upon their observation among animals, make it weaker. Also Robert and Dorothy writing are complicated due to their technical writingâ⬠¦show more contentâ⬠¦On the other hand the male baboon leaves its troop and finds a new one. The female alphasââ¬â¢ in the troop are chosen according to their high friendship status. Many scientists and scholars such as Berkman and Holt-Lunstad concluded that having a strong social network reduces stress, lowers the risk of disease, and Longevity (2004 and 2010). The chimpanzees: The society of the chimpanzees is strictly different from that of baboons (Robert and Dorothy 2012, p.157). When reaching maturity the male chimpanzee stays in the troop and the female chimpanzee leaves the troop and joins a new one. The male alpha displays a high rank which is associated with high rates of aggression, displays, and coalition formation (Muller amp; Mitani 2005). Other species: ââ¬Å"A growing body of evidence indicates that the friendships found in the baboons and chimpanzees are not aberrations: similar long-lasting bonds can be found in the animal kingdomâ⬠(Dorothy and Robert 2012, p.159). ââ¬Å"In all of these species, females are thee philopatric sex, and the strongest most enduring social bonds are formed among mother-daughter pairs and sistersâ⬠(Dorothy and Robert 2012, p.159). With humans and many species, friendship is the key a long life, happiness, and successful reproduction. Itââ¬â¢s the kind of social links that you form throughout your life. Species become alphasââ¬â¢ because they make long-term relationships and the mechanism that underlines them. Friendships according to different sexShow MoreRelatedHerbert Spencer Essay13142 Words à |à 53 Pages1857, he extended the idea of evolutionary progress to human society as well as to the animal and physical worlds. All nature moves from the simple to the complex. This fundamental law is seen in the evolution of human society as it is seen in the geological transformation of the earth and in the origin and development of plant and animal species. Natural selection, as described by Charles Darwin in the Origin of Species, published in 1859, completed Spencers evolutionary system by providing the mechanismRead MoreEthnic Reproduction and the Amniotic Deep: Joy Kogawas Obasan13316 Words à |à 54 PagesRelationships: definitions and varieties (p. 429) Voluntary/involuntary relationships (p. 429) Arranged marriages (p. 430) Gay and lesbian relationships (p. 430) ââ¬ËElectronicââ¬â¢ friendships (p. 431) Different types of love (p. 431) The power of love (p. 431) Is romantic love unique to western culture? (p. 431) An evolutionary theory of love: love as attachment (p. 432) Stage theories of relationships (p. 433) The filter model (Kerckhoff Davis, 1962) (p. 433) An evaluation of the filter modelRead MoreContemporary Applications of Schools in Psychology8487 Words à |à 34 Pagescan be seen in contemporary fields within applied psychology like clinical psychology, social psychology, forensic psychology, health psychology, industrial or organizational psychology, community psychology, consumer psychology, applied behavioral analysis, environmental psychology, legal psychology, military psychology, political psychology, religion psychology, sports psychology, school psychology, child psychology, adolescent psychology, geriatric psychology, personality psychology, educationalRead MoreContent Analysis of Focus Group Data7519 Words à |à 31 PagesRESEARCH Understanding the Experiences of Adult Learners: Content Analysis of Focus Group Data Jeff Zacharakis, Marie Steichen, and Gabriela Diaz de Sabates, Kansas State University Dianne Glass, Kansas Board of Regents ABSTRACT In this qualitative research study, we sought to better understand the experiences of adult learners in adult education centers. We conducted eight focus groups with 104 adult education students from 25 adult learning centers. Five groups were made up of English-speakingRead MoreExam 3 Study Guide Essay4934 Words à |à 20 Pagesautonomic responses, and somatic responses. What does each of these refer to? Feelings: Introspection, subjective Autonomic Responses: Sympathetic activation, hormonal Somatic Responses: Facial expressions, approach or avoidance 3. What is the evolutionary view of emotion as originally proposed by Darwin? What is the adaptive value of emotion? What evidence suggests that these emotions are innate? Emotion promotes survival of the species, emotional responses are instinctive and universal, ratherRead MoreThe Importance of Demography to Development11868 Words à |à 48 Pagesstudy of the origin, development, organization, and functioning of human society; the science of the fundamental laws of social relationships, institutions, etc. It generally concerns itself with the social rules and processes that bind and separate people not only as individuals, but as members of associations, groups, and institutions, and includes the examination of the organization and development of human social life. The sociological field of interest ranges from the analysis of short contactsRead MoreTracing Theoretical Approaches to Crime and Social Control: from Functionalism to Postmodernism16559 Words à |à 67 Pagesfamily home. Next, I would like to express gratitude for my academic team of sociologists: to my peers for their support, in particular, Mike Trask, Joanni Hache, Caroline Trudel, and Alex Wilson; to my best friend Nicole Prime, your continuous friendship and educational assistance is appreciated more than words can express; to Dr. Jim Brittain for your influential insight into Karl Marx and the capitalistic social order; thank you to my second thesis supervisor, Dr. Anthony Thomson, for yourRead MoreAn Evaluation of an on-Farm Food Safety Program for Ontario Greenhouse Vegetable Producers; a Global Blueprint for Fruit and Vegetable Producers51659 Words à |à 207 Pagesreduce risk. An illustrative case study to examine implementation trends was developed through the examination of current on-farm food safety issues and programs, with specific focus on the Ontario Greenhouse Vegetable Growers (OGVG) hazard analysis critical control point (HACCP)- based initiative. In 2003, OGVG s 200 members had a combined farm-gate value of $350 million and represented 41 per cent of North American greenhouse vegetable production. Program implementation barriers identified included:Read MoreOverview of Hrm93778 Words à |à 376 Pageschanging environment Workforce diversity, pros and cons Functions of HRM Relationship between HR specialist and line managers Legal and ethical issues in HRM Human resource planning (HRP)Human resource information system (HRI S) Job analysis Job analysis continued Job analysis outcomes. Recruitment Source of recruitment Selection Selection Tests Selection process, continued Socialization Training development Maximizing learning Career management Performance Performance Appraisal Job evaluation and pricingRead MoreConflict Management and Emotional Intelligence63003 Words à |à 253 Pages96à à à à à à à à à à à à à à à à à à à 3.2 à à Justificationà forà theà paradigmà andà methodologyà à à à à à à à à à à à à 99à à à à à à à à à 99à à à à à à à à à à 96à 3.2.1 à Qualitativeà analysisà à chosenà à à à à à à 3.2.2 à Unità ofà analysisà à à à à à à à à à 3.2.3 à Instrumentsà andà proceduresà ofà dataà collectionà à à à à à à à à à 107à 3.2.4 à Administrationà ofà instrumentsà andà proceduresà à à à à à à à à à 113
Wednesday, May 6, 2020
The Impact Of Sexual Harassment On The Workplace - 2906 Words
The Impact of Sexual Harassment Sexual harassment affects the way we work, impacts the way we conduct ourselves in the place of business. Sexual harassment comes in many shapes and forms, and has lingering effects. While the majority has only been noticed in a business setting, sexual harassment occurs in every type of job. Many noted cases have influenced the workforce; and the way we operate together. Policies to deter this action have failed in-order to dissolve such actions. Sexual harassment occurs in every work environment, influences employees, and the work environment, and needs to have policies that are more stringent. In this paper, I will discuss and prove that the lingering effects of sexual harassment can have a negative impact for many years in the workplace. The presence of sexual harassment has become more and more prevalent due to the impact of women joining the workforce. Women are expanding into every aspect of the workforce and are no longer only in the administrative, and hospitality areas, the y are on construction sites, on the front lines alongside men in the military, and down in the coalmines. The Baby Boomer generation where the women stayed home and took care of the family are over and the Gen X has taken over. This Gen X movement has created an influx of women in the workplace in every type of job that is possible, where men are women are, if a man can do it a woman can also. This growing amount of numbers for women in the workplace has createdShow MoreRelatedSexual Harassment And The Workplace1349 Words à |à 6 PagesSexual harassment affects the way we work, impacts the way we conduct ourselves in the place of business. Sexual harassment comes in many shapes and forms, and has lingering effects. While only being noticed in the workplace, sexual harassment occurs in every type of job. Many noted cases have influenced the workforce; and the way we operate together. Policies to deter this action have failed in-order to completely dissolve such actions. Sexual hara ssment occurs in every work environment, influencesRead MoreIntroduction. The Purpose Of This Article Is To Provide1362 Words à |à 6 PagesIntroduction The purpose of this article is to provide a concise summary of what sexual harassment is, discussing who it affects, and its prevalence in organisations using evidence and examples. A range of views will be provided to describe how sexual harassment affects organizations and employees. This article will examine the primary alternative interventions aimed at resolving for sexual harassment in the workplace. The alternatives are all considered to be preventions, rather than reactions toRead MoreSexual Harassment : How Does It Differ From Bullying?891 Words à |à 4 Pages1. What is sexual harassment? How does it differ from bullying? Sexual harassment is an unwanted attention that is sexual in nature. It can be a one-time occurrence or a result of repeated behaviour. In addition, harassment is viewed from the victimââ¬â¢s perspective and what the perceiver or affected individual would feel in the exact same situation. Workplace bullying on the other hand can be defined as an act or verbal behavior that is persistent and continuous, with intent to mentally hurt or isolateRead MoreSexual Harassment Within The Workplace1567 Words à |à 7 PagesSexual harassment is a continuing, persistent occupational health problem in corporations and work environments. There can be extensive, negative consequences for individual victims and the corporations involved. Assailants and harassers can impact and hurt victims by affecting both their professional work lives and personal lives. The purpose of this paper is to heighten awareness and sensitivity to this important issue, recognizing that institutions, clinics, corporations, organizations and office-basedRead MoreSexual Harassment At The Workplace Essay1371 Words à |à 6 PagesIn recent years, there has been an increase in the attention given to sexual harassment at the work place. Unnecessary and unwanted sexual attention between women and men in the workp lace has been there for a very long time in the past. For many years, this unwanted sexual attention has been categorized as a natural form of male/female interaction. However, this has changed as women have become more involved in organizations. Thoughts and feelings about the acceptability of this behavior are rapidlyRead MoreSexual Harassment1405 Words à |à 6 PagesSexual harassment Sexual harassment in a healthcare workplace is a very important topic to discuss even though it is often swept under the rug. Even with all law, literature and discussions on sexual harassment, people still remain confused about what exactly constitutes sexual harassment. Therefore knowing what sexual harassment entails and looks like is a crucial step in the prevention of it from taking place. Sexual harassment is a form of gender discrimination; it can therefore be definedRead MoreSexual Harassment At The Workplace990 Words à |à 4 PagesIt is great to have a workplace where you are friends with your coworkers. But what happens when coworkers talk about other coworkers in a sexual context. Two male coworkers talking about female staff where coworkers in the area can hear. Your manager suggests that they can help you earn a promotion if you go out with them. This puts employees in awkward situations where they might not know if this is considered sexual harassment. If it is , an employee maybe unsure what to do about it. AccordingRead MoreWorkplace Harassment : 7 Tips Women752 Words à |à 4 PagesWorkplace harassment: 7 Tips Women Can Use to Address Sexual Harassment Matters of workplace harassment has been a controversial issue as it is one of the most sensitive areas of effective workplace management. Workplace harassment is the belittling or threatening behavior directed at an individual worker or a group of workers. Workplace harassment is also known as mobbing, workplace bullying, workplace mistreatment, workplace aggression and workplace abuse. A prominent form of workplace harassmentRead MoreSexual Harassment At The Workplace1697 Words à |à 7 PagesSexual Harassment in the Workplace Eva L. Mendez-Zacher MG260, Business Law I 28 September 2014 Dr. Anita Whitby Abstract Iââ¬â¢m conducting a study on Sexual harassment in the workplace. Sexual harassment is possible in all social and economic classes, ethnic groups, jobs and places in the community. Through this study I hope to clarify the common misconception that sexual harassment is an isolated female problem. Although the majority of the cases reported are in fact male on femaleRead MoreThe Human Rights Code1228 Words à |à 5 PagesFacts This is an application filed under s. 34 of the Human Rights Code, R.S.O. 1990, c. H. 191 alleging discrimination in the workplace environment due to sex, including sexual harassment as a factor. In September of 2010, the respondent was working as a doctorââ¬â¢s assistant at a clinic in Toronto, where the applicant worked as a secretary. The applicant, upon the respondentââ¬â¢s request, stayed after work hours for training regarding re-ordering medicine. During this time, the respondent asked if he
Host based Intrusion Prevention Free Essays
Intrusion Detection Systems (IDSs) recognize the presence of malicious code within traffic that flows through the holes punched into the firewall, our first layer of defense. Though, the word ââ¬Å"intrusion detectionâ⬠is a bit of a misnomer. Richard Kemmerer and Giovanni Vigna of the University Of California, Santa Barbara, elucidate in an article in the IEEE Security and Privacy magazine: ââ¬Å"Intrusion detection systems do not detect intrusions at allââ¬âthey only identify evidence of intrusion, either while in progress or after the fact. We will write a custom essay sample on Host based Intrusion Prevention or any similar topic only for you Order Now â⬠(Edwin E. Mier, David C. Mier, 2004) An IDS recognizes security threats by detecting scans, probes and attacks, however does not block these patterns; it only reports that they took place. Yet, IDS logged data is invaluable as proof for forensics and incident handling. IDSs as well detect internal attacks, which are not seen by the firewall, and they help in firewall audits. IDSs can be divided into 2 main categories, footed on the IDS alarm triggering mechanism: anomaly detection-based IDS and misuse detection-based IDS. Anomaly detection based IDSs report deviations from ââ¬Å"normalâ⬠or expected behavior. Behavior other than ââ¬Å"normalâ⬠is measured an attack and is flagged and recorded. Anomaly detection is as well referred to as profile-based detection. The profile describes a baseline for normal user tasks, and the quality of these user profiles directly has an effect on the detection capability of the IDS. Techniques for constructing user profiles comprise: (Nong Ye, 2003). Rule-based approachââ¬âNormal user behavior is characterized by creating rules, however analyzing normal traffic is a complicated task. A related approach is protocol anomaly detection. Neural networksââ¬âThese systems are trained by presenting them with a large amount of data, together with rules regarding data relationships. They then find out if traffic is normal or not; abnormal traffic raises an alarm. Statistical approachââ¬âActivity profiles describe the behavior of system or user traffic. Any deviation from normal triggers an alarm. The advantage of anomaly detection is that it can identify previously unknown attacks and insider attacks, without the need for ââ¬Å"signaturesâ⬠ââ¬â that is., predefined attack profiles. One more benefit of anomaly detection is that itââ¬â¢s impossible for the attacker to know what activity causes an alarm, thus they cannot assume that any particular action will go undetected. The disadvantage of anomaly detection is that it produces a large number of ââ¬Å"false positivesâ⬠ââ¬â that is., alerts that are produced by legitimate activity. In addition, besides being complicated as well as hard to understand, building and updating profiles as well need a lot of work. The other most important approach, misuse-detection based IDS (also called signature-based IDS), triggers an alarm when a match is found to a ââ¬Å"fingerprintâ⬠-a signature contained in a signature database. These ââ¬Å"fingerprintsâ⬠are footed on a set of rules that match typical patterns of exploits used by attackers. As there is a known database of exploits, there are few false positives. The disadvantage is that misuse-detection IDSs can merely detect already-known attacks. Besides, the ââ¬Å"fingerprintsâ⬠database needs to be incessantly updated to keep up with new attacks. The majority IDS products in the market at present use misuse detection. How to cite Host based Intrusion Prevention, Papers
Saturday, April 25, 2020
Once Upon Time By Nadine Gordimer Essays - Nadine Gordimer
Once Upon Time By Nadine Gordimer Once Upon a Social Issue Fairy tales have always been told to us as children; whether to comfort or entertain us, they always seem to be a part of most everyone's childhood. When Nadine Gordimer was asked to write a children's story, she replied with a short story titled "Once Upon A Time". Although the title is characteristic of a fairy tale, she leads the tale to an ending that is anything other than "...happily ever after." Gordimer distorts the fairy tale by dealing with certain issues rather than giving the reader the usual fairy tale characteristics. Three of the more significant issues Gordimer likes to deal with in her story are racial discrimination and prejudice, society's insecurities, and the persuasive way fairy tales have with children. Gordimer's "Once Upon A Time" has the feeling of insecurity right away. In the first part of her story, Gordimer reminds us of our own insecurities. She brings up a familiar situation in which one is awakened by a bump in the night and cannot go back to sleep because of fear or their own insecurities. Gordimer writes, "I have no burglar bars, no gun under the pillow, but I have the same fears as people who do take these precautions..." So, to better convey this issue of society's insecurities, she tells herself a bedtime story. In the story, there is a family who is living "...happily ever after", yet is seems it is all that they can do to keep it that way. Rather than putting their insecurities aside and getting on with their lives, they feel that they must put their trust in security devices to protect their selves. For a short while, the family has a sense of security by posting a plaque stating "'YOU HAVE BEEN WARNED" over the silhouette of a prospective intruder. After a short time the family's psychological need for more security calls for a number of new security devices in order to sustain the top level of security. It is in the family's pursuit of this "security" that they virtually imprison themselves. After the installation of burglar bars, Gordimer describes the view"from every window and door in the house where they were living happily ever after they now saw the trees and sky through bars." One of the less obvious issues lining "Once Upon A Time" is racial discrimination. Gordimer first suggestion that this suburb may be slightly racist is by stating that the plaque on their gate warning possible intruders didn't designate black or white, therefore protesting too much the owner of the home not to be a racist. By adding this statement, Gordimer lets there be evidence for a possible racism problem in this suburb. Gordimer's statement of riots outside of the city was also supporting evidence toward racism in this place. The only black people that were allowed in the suburbs were those considered to be trustworthy gardeners or housemaids, and soon the trustworthy were not the only black people to be loitering around the suburb. Gordimer writes of the community stating "it was a beautiful suburb, spoilt only by [the black people's] presence." With the coming of these undesired guests, the family's sense of security begins to weaken yet again. In order to further suppress their insecure feelings, they decide to raise the walls surrounding the property to a height of seven feet. Later, after finding footprints that were not their own on the street side of the wall, the family's sense of security was further diminished. As a final attempt at gaining complete security, the family pondered the addition of even more protection for their outside wall. The family's pursuit of a mental security booster was finished when they lined the outside walls with razor wire that formed an unconquerable barrier. Feeling quite safe with their new wire defense, the mother finally feels secure enough to let her guard down and read her little boy a fairy tale. The fairy tale, a story about a prince who dashes through a terrible thicket of thorns to enter the palace and kiss the Sleeping Beauty and bring her back to life. Children, having the imaginations that they do, sometimes like to pretend to be a hero as in the fairy tale. So, the next day, the little boy decides to also save the sleeping beauty by crawling through the shinny new obstacle atop the outside wall. Once inside the young prince began to charge through the insurmountable odds, and found them to be
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