Wednesday, April 15, 2020

The Message Of Babi Yar Essays (1136 words) -

The Message of Babi Yar There are very few people in the world who are willing to go against the popular trends and do what they feel in their hearts is correct. But Yevgeny Yevtushenko is one of those people. In his poem Babi Yar, he tells the story of the modern persecution of the Jews, focusing on atrocities like those of the massacre at Babi Yar and the pogroms at Beilostok, and also the general anti-Semitism that killed men like Dreyfus and pervades the entire Russian people. The poem uses many literary devices, such as graphic imagery and contrasts, while painting a very clear picture of the scenes of pure horror. Babi Yar is written in many different voices, all of which, however, have the same message. The author starts off with his own perspective, then goes on and describes certain people in modern Jewish history whose lives will forever be remembered as symbols of the time. At the end of the poem the author comes back and speaks in his own voice, yet this time he delivers a message to his people about how they have committed a large number of these crimes against the Jews, yet think that such actions are pure and good for Russia. By switching from the voices of those who were so afflicted by the persecution to a voice of accusation, the author effectively points out how foolish the arguments of the Russians are when they try to point out any validity in killing millions of Jews. The poem starts out with a description of the ravine at Babi Yar. However, all it says is that there is nothing to describe. It calls the steep ravine, which is the grave sight of one hundred thousand people, the only memorial that is there. This frightens the author, because the massiveness of the tragedy deserves at least some recognition. Then Yevtushenko realizes that fear is a part of Judaism, something that is as old as them, and therefore originating with them. He says that he too must be a Jew for he is afraid of what his people and his society have become. Many years ago, in the "ancient days," it would not be such a shock to see the Jews enslaved in Egypt or crucified as a means of torture and death, but even in modern times the same things are going on-he still has the marks from where the nails pierced him. The author has used classical examples of Jewish persecution which every one knows is gone in the physical sense, but show how they still exist in the theoretical aspect, as the persecution is still occurring. In the next three stanzas, the poem takes the standpoint of three figures whose stories are pertinent examples of what Yevtushenko is trying to rely in this poem. First the voice of Dreyfus is used, and the stanza describes how horribly and unfairly he was treated, and how the country and its leaders turned their backs on him. There are two important literary devices used in this section. First the author puts the word "pettiness" on a line by itself. This is used as a declaration of what the author feels anti-Semitism is based on. It is because of pettiness that Dreyfus was accused and further because of pettiness that he was not pardoned when it was proven that he had not committed any crime. The next important device is the description of ladies with their umbrellas. This is an image to the wealthy aristocracy of France, who not only turned their backs on Dreyfus and did not help him, but also increased the effort to have him punished unnecessarily. The next Jewish figure whom the author singles out is a boy from the town of Bielostok, where one of the most horrible pogroms ever took place. The entire stanza focuses on the image of how bad the people were who participated in the pogrom. Using graphic images of blood spurting all around and of victims pointlessly begging for mercy, the author clearly shows how wrong the pogroms were and wrong his countrymen were for allowing them to occur. A device the author uses in this stanza is contrast, as in

Thursday, March 12, 2020

How Quantum Computers Work

How Quantum Computers Work A quantum computer is a computer design which uses the principles of quantum physics to increase the computational power beyond what is attainable by a traditional computer. Quantum computers have been built on a small scale and work continues to upgrade them to more practical models. How Computers Work Computers function by storing data in a binary number format, which result in a series of 1s 0s retained in electronic components such as transistors. Each component of computer memory is called a bit and can be manipulated through the steps of Boolean logic so that the bits change, based upon the algorithms applied by the computer program, between the 1 and 0 modes (sometimes referred to as on and off). How a Quantum Computer Would Work A quantum computer, on the other hand, would store information as either a 1, 0, or a quantum superposition of the two states. Such a quantum bit allows for far greater flexibility than the binary system. Specifically, a quantum computer would be able to perform calculations on a far greater order of magnitude than traditional computers ... a concept which has serious concerns and applications in the realm of cryptography encryption. Some fear that a successful practical quantum computer would devastate the worlds financial system by ripping through their computer security encryptions, which are based on factoring large numbers that literally cannot be cracked by traditional computers within the lifespan of the universe. A quantum computer, on the other hand, could factor the numbers in a reasonable period of time. To understand how this speeds things up, consider this example. If the qubit is in a superposition of the 1 state and the 0 state, and it performed a calculation with another qubit in the same superposition, then one calculation actually obtains 4 results: a 1/1 result, a 1/0 result, a 0/1 result, and a 0/0 result. This is a result of the mathematics applied to a quantum system when in a state of decoherence, which lasts while it is in a superposition of states until it collapses down into one state. The ability of a quantum computer to perform multiple computations simultaneously (or in parallel, in computer terms) is called quantum parallelism. The exact physical mechanism at work within the quantum computer is somewhat theoretically complex and intuitively disturbing. Generally, it is explained in terms of the multi-world interpretation of quantum physics, wherein the computer performs calculations not only in our universe but also in other universes simultaneously, while the various qubits are in a state of quantum decoherence. While this sounds far-fetched, the multi-world interpretation has been shown to make predictions which match experimental results. History of Quantum Computing Quantum computing tends to trace its roots back to a 1959 speech by Richard P. Feynman in which he spoke about the effects of miniaturization, including the idea of exploiting quantum effects to create more powerful computers. This speech is also generally considered the starting point of nanotechnology. Of course, before the quantum effects of computing could be realized, scientists and engineers had to more fully develop the technology of traditional computers. This is why, for many years, there was little direct progress, nor even interest, in the idea of making Feynmans suggestions into reality. In 1985, the idea of quantum logic gates was put forth by the University of Oxfords David Deutsch, as a means of harnessing the quantum realm inside a computer. In fact, Deutschs paper on the subject showed that any physical process could be modeled by a quantum computer. Nearly a decade later, in 1994, ATTs Peter Shor devised an algorithm that could use only 6 qubits to perform some basic factorizations ... more cubits the more complex the numbers requiring factorization became, of course. A handful of quantum computers has been built. The first, a 2-qubit quantum computer in 1998, could perform trivial calculations before losing decoherence after a few nanoseconds. In 2000, teams successfully built both a 4-qubit and a 7-qubit quantum computer. Research on the subject is still very active, although some physicists and engineers express concerns over the difficulties involved in upscaling these experiments to full-scale computing systems. Still, the success of these initial steps does show that the fundamental theory is sound. Difficulties With Quantum Computers The quantum computers main drawback is the same as its strength: quantum decoherence. The qubit calculations are performed while the quantum wave function is in a state of superposition between states, which is what allows it to perform the calculations using both 1 0 states simultaneously. However, when a measurement of any type is made to a quantum system, decoherence breaks down and the wave function collapses into a single state. Therefore, the computer has to somehow continue making these calculations without having any measurements made until the proper time, when it can then drop out of the quantum state, have a measurement taken to read its result, which then gets passed on to the rest of the system. The physical requirements of manipulating a system on this scale are considerable, touching on the realms of superconductors, nanotechnology, and quantum electronics, as well as others. Each of these is itself a sophisticated field which is still being fully developed, so trying to merge them all together into a functional quantum computer is a task which I dont particularly envy anyone ... except for the person who finally succeeds.

Tuesday, February 25, 2020

Strategic management for engineers and technologists Case Study

Strategic management for engineers and technologists - Case Study Example The differentiating factor of Harley Davidson had been its heavy customization offering to customers and its distinctive design (b). INDUSTRY Harley Davidson has been among the leading players in the motorbike industry. Two-wheeler plays significant role in leisure industry in addition to meeting transportation-needs. For instance, sporting bikes and high way cruising bikes are used for leisure and sporting purpose etc (Mason, 2012). Worldwide motorcycle industry accounts for around $63.5 billion in 2010 according to the Report Linker, (2012). The growth status of the industry has been none over the last four years as reported by aforementioned research (Report Linker, 2012). However, the report forecasts growth of around six percent in for 2010-2015 (Report Linker, 2012). KEY SUBSTITUTE PRODUCTS The close substitute of the motor bikes is car. Mintel research reports transportation expenses on the motor bikes, cars both used and new ones. The research reported significant rise old ca rs and two wheelers contribution in expenditure as compared to new cars as given below: 2001 2011 % change ?m ?m 2001-11 Consumer expenditure on new cars 32,200 26,895 -16.5 Consumer expenditure on used cars 25,400 38,165 50.3 Two-wheelers 1,774 2,226 25.5 Petrol, oil & antifreeze 19,391 34,582 78.3 Car & van hire 1,545 2,019 30.7 Other transport & motor vehicle running costs* 15,156 26,200 72.9 Total 95,466 130,087 36.3 (Mason, 2012) KEY COMPETENCIES Possession of key competencies is critical to remain among the dominant or even sustaining position in any industry. Key competencies that that motor bike firms require to develop include: Innovative expertise and research and development: Innovation capabilities have taken crucial role in the firm’s core competencies in every industry and same is the case with this industry. Innovation plays a significant role in motor bike industry as well. For instance, Japanese motor bikes invaded the US industry with innovative capability t o develop smaller, faster, fuel efficient models of the motor bikes (b). HD with its capabilities innovated improved mechanism when European Laws mandated noise control. HD managed to change its core gear production competency that was giving noise output (Modern Machine Shop, 1996). Over the period of time motor bike industry has witnessed significant innovations in form of Razr Scooters, BMW C1, Segway etc (Keller, 2012). Internal Combustion Engine (ICE) being recent innovation is to take significant market in years to come (Report Linker, 2012). Technology, speed, engine, environmental compatibility, weight and design are areas of continuous innovation in the motor bike industry. Supplier and distributor relationship Management: Supplier relationship management is critical for such mechanical products. Components outsourced are required to be strictly in line with specification in order to ensure fine fitting of final product. Similarly distributor relationship management is also extremely important. Consumer’s purchase decision receives strong impact from the distributors’ recommendation as motor bikes require significant investment. Hence, well established distributors relationship management plays dominant role in firm’s position in the market. Information Technology Systems: Technological advancement has significantly impact different industries. Research and development, managing huge manufacturing plants, financials, marketing hence all areas are dependent on effective

Saturday, February 8, 2020

Impacts Of Conversion Of Tropical Forests To Small-Scale Agriculture Essay

Impacts Of Conversion Of Tropical Forests To Small-Scale Agriculture - Essay Example From a biologist perspective, tropical forests are the richest and most exciting areas on earth sheltering a diverse wildlife. Tropical forests are differentiated from another type of forests due to their gigantic trees amazingly diverse fauna of colorful birds, millions of brightly hued insects, and a variety of fascinating mammals. It is widely accepted that tropical lowland forests are the most species-rich type of terrestrial ecosystem, for example, a hectare of Malaysian tropical rainforest may contain 180 kinds of trees. Tropical rainforests are generally concentrated near the equator in Asia, Africa, South America, Central America, and on many of the Pacific Islands. According to WWF’s biome classification, tropical rain forests are considered a type of tropical wet forest and may also be referred to as lowland equatorial evergreen rain forests. All five layers of tropical rainforests i.e. emergent layer, canopy layer, understory layer, shrub layer, and forest floor are enriched with different plants and animals. Tropical deforestation, desertification, decreasing biodiversity, climate change and the scarcity of fresh water are issues of recent global conflict. This paper makes a conclusion that tropical forests are the richest and most exciting areas on earth sheltering a diverse wildlife. Small-scale agricultural practices, though considered safe by many scientists and ecologists, have been proved to be having detrimental effects on the health of tropical forests. These agricultural practices are facing the burden of huge population growth and unhealthy practices.

Wednesday, January 29, 2020

Cross site scripting Essay Example for Free

Cross site scripting Essay Cross-site scripting is form vulnerability for computer security which mainly occurs in web applications that accept injection of code by web users who happen to be malicious; such users inject the code into various web pages that are used by other web users. The most common codes that are usually injected by malicious web users include scripts of client side and HTML codes. Cross site scripting (XSS) vulnerability which is exploited is usually used by attackers for by passing the certain access controls, a good example of such bypass is a policy of the same origin. XSS originated from the fact that it is possible for a malicious web site to be loaded into another window or frame and then write or read data using java script on other web sites (Rafail, 2001). Cross site scripting vulnerabilities XSS vulnerabilities have been well exploited to come up with very powerful browser exploits and phishing attacks. XSS performed on websites were about eighty percent of all the recorded securities as indicated by the 2007 statistics. In most cases of attack every thing looks to be in order as far as the end users are concerned, but they are finally subjected to access which is not authorized, financial loss and loss of sensitive data (Rafail, 2001). The cross site scripting can be primarily be categorized into two: reflected and stored. But there is another type of cross site scripting which is not widely known, called DOM. The stored refer to those codes that once injected are stored in the target servers permanently. They can remain permanently in the message forum, database comment field, or in the visitor log. The reflected XSS attacks, are the codes which when injected, the web server is reflected off as a search result, an error message or other forms of responses that may include all or some of the input that was sent to the various servers as request in part. Usually the reflected attacks are sent to the victims through other channels such as electronic mail messages, or through other web servers. Once a user is lured into clicking a link which is malicious or is tricked to submit a form which is specially crafted, the code that has been injected travels via the web server which is vulnerable, the reflected attack is in turn sent back to the browser and the code is then executed as if it originated from a valid server (Rafail, 2001). The consequences of cross site scripting attacks are primarily the same regardless of whether they are DOM based, reflected or stored. The main difference the manner in which the pay load enters the server. Cross site scripting is capable of causing various problems to the end users. The problems range in severity, they can cause annoyance to the end users as well as complete loss of accounts. The most serious attacks of XSS result into disclosure of the users information and data thus giving the attacker to actually hijack the session of the user and thus be in a position to comfortably take over the users accounts. The XSS expose the end users to other damaging attacks such as Trojan programs installations, disclosure of files belonging to the end users, redirecting the web user to other sites or pages, or modification of the contents. A cross site scripting vulnerability that allows the attacker to change certain news item or a press release is capable of affecting the stock price of an organization or decreasing the confidence of the consumer. For example a cross site scripting vulnerability on a site of a pharmaceutical can allow the attacker to alter the information of dosage which might result into over or under dosage (Rafail, 2001). Flaws in an XSS are at times very difficult to establish and get rid of them from web applications. In order to find such flaws, the best method to use is performing a review on the security code and also to perform a thorough search in all possible areas where HTTP input request can easily finds its way into output of the HTML. It is very important to note that various tags of HTML tags can be effectively used in transmission of java scripts which are malicious. Nikto, Nesus plus other tools which are currently available in the market can be used in scanning the websites but they are less effective since they are only capable of scratching the surface and are not capable of eliminating all the flaws in the system (Snake, n. d. ). Preventing XSS attacks Once a web site becomes victim of XSS attack the end user is likely too loose a lot of crucial data and information. It is therefore, very important for people to protect themselves against such attacks. One of the best ways of preventing your self of becoming a victim to an XSS attack is failing to respond to a request that is unsolicited by providing your personal details. Such information should not be provided whether it is over the internet or the phone. Users should know that the internet and e-mail pages that are usually used by the XSS attackers look similar to those used by the legitimate institutions and it might be quite hard to distinguish between the two. So if one believes that the contacts could be valid them they should contact the institution in question themselves. They can do so by either visiting the company’s website and instead of using the provided link one should actually type the address or use a page that you might have book marked earlier. One should initiate the contact using the information that you have verified (Naraine, 2009). Conclusion Cross site scripting is a serious fraudulent activity and once one falls prey to it can end up loosing significantly. It is thus good to increase awareness of such vices so that when people are targeted for such acts they can be able to identify them and subsequently be in a good position to protect them. The end users should also do all that is possible in order to conceal their vital information and ensure that it is only given to the relevant authorities when needed. It is also important to keep scanning their system regularly using valid tools. Reference: Naraine, R. (2009): Phishing without bait: The in-session password theft attack, Retrieved on 1st June 2009 from, http://blogs. zdnet. com/security/? p=2390. Rafail, J. (2001): Cross-Site Scripting Vulnerabilities, Retrieved on 1st June 2009 from, http://www. cert. org/archive/pdf/cross_site_scripting. pdf. Snake, R. (n. d. ): XSS (Cross Site Scripting) Cheat Sheet Esp. : for filter evasion, Retrieved on 1st June 2009 from, http://ha. ckers. org/xss. html.

Tuesday, January 21, 2020

Attention Deficit Hyperactivity Disorder in Children Essay -- ADHD Dis

Introduction:   Ã‚  Ã‚  Ã‚  Ã‚  Most people have heard of the term Attention Deficit Hyperactive (ADHD) disorder. â€Å"Attention Deficit Hyperactivity Disorder (ADHD) is a neurobiological disorder that interferes with an individual’s ability to attend to tasks (inattention), inhibits one’s behavior (impulsivity), and may interfere with a person’s ability to regulate one’s activity level (hyper-activity) in developmentally appropriate ways (Barkley 19)†. The most important job for teachers and parents is to separate fact from fiction, to clarify what we know and don’t know.   Ã‚  Ã‚  Ã‚  Ã‚  Properly diagnosing ADHD, medication choices, and behavioral interventions are the key focal point. Is medication truly worth the side effects? Diagnosing ADHD   Ã‚  Ã‚  Ã‚  Ã‚  As the name implies, ADHD is typically characterized by two distinct sets of symptoms: inattention and hyperactivity / impulsivity. Although these problems usually occur together, one may be present without the other and still qualify for an ADHD diagnosis. Children are diagnosed with ADHD when they have met specific guidelines within these two categories.   Ã‚  Ã‚  Ã‚  Ã‚  A number of parents observe signs of inattentiveness, restlessness, and impulsivity in their child even before their child starts school. The child might lose attention while playing a game or watching TV, or the child might dash about totally unrestrained. Since children mature at different levels and vary in character, nature, and energy levels, it is critical to obtain a specialist’s diagnosis of whether the behavior is suitable for the child's age, the child has ADHD or the child is simply immature or uncommonly high-spirited.   Ã‚  Ã‚  Ã‚  Ã‚  To qualify as having ADHD, the symptoms must significantly affect a child's ability to function at home and at school. A diagnosis is based on the guidelines provided in the â€Å"American Psychiatric Associations Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV) published in 1994 (Barkley 133)†. In general, children are diagnosed with ADHD if they show at least six symptoms from each category. Dr. Berkley lists the following symptoms for each category:   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Inattention: †¢Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Often fails to pay close attention to details or makes careless mistakes in schoolwork or other activities †¢Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Often has trouble sustaining attention during tasks or play †¢Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Often doesn't seem to listen when spoken ... ...counseling the child and the family and facilitating them in the development of new skills, attitudes, and ways of relating to each other. The important step is proper diagnosis of ADHD. It is imperative to know about any medication being prescribed for each individual child. Work Cited Page: American Academy of Physicians â€Å"ADHD: What Parents Should Know.† Family Doctor, 10 April, 2005 Barkley, Russel A. Taking Charge of ADHD: The Complete, Authoritative Guide for Parents. New York: The Gilford Press, 2000. Eli Lilly and Company â€Å"Strattera.† Strattera 10 April, 2005 McNeil Consumer & Specialty Pharmaceuticals, a Division of McNeil-PPC, Inc â€Å"Prescription Medication Overview† Focus on ADHD. 14 April, 2005 Rabnier, David. â€Å"Behavioral Treatment for ADHD: An Overview.† Health. 14 April, 2005 Wilens, Timothy E. Straight Talk about Psychiatric Medications for Kids New York: The Guilford Press, 1999. Wilens T.C. et all. Does stimulant therapy of attention-deficit/hyperactivity disorder beget later substance abuse? A meta-analytic review of the literature. Pediatrics, (2003) 111:1:179-185.

Monday, January 13, 2020

Parent Interview

I interviewed a woman who has given birth within the past year so that I can relate the things I am learning In the classroom back to real life scenarios. Throughout the Interview I hope to obtain enough knowledge to be able to understand the blurting process a lot better. I hope that I will be able to know more about how real life situations when it comes to having a new baby in the house. I also hope to be able to understand what it is like for a mother to see their newborn baby for the first time. Else is a 23 year old female.She is Mexican and was born at Fremont hospital in Yuba City, CA. Her family is made up of her boyfriend, herself, and her 4 children. Her boyfriend is also Mexican and they speak mostly English inside of their home, but they also Include some Spanish. She doesn't work at the moment, she currently Is enrolled In 5 classes at Yuba College and Is a full time mother to her 4 little ones. I interviewed Else outside of the cafeteria at Yuba College, It wasn't exac tly In privacy but she said It was perfectly fine. The total Interview took about an hour.Else was very nice and considerate, since she Is an ACE major also, she decided In the middle f the interview that she wants to take ACE 3 and learn about that the basics of every child. There was no problems with the procedure. RESULTS Else had a difficult delivery. She had a planned cesarean delivery, but she had a lot of tissue scaring which made it harder for the doctors to stitch the incision that was made. According to Papilla, a cesarean delivery is when doctors surgically remove a baby from the uterus through an incision In the mother's abdomen (120).She ended up having to stay 4 days In the hospital because of the complications with the Incision. When Else first saw her daughter she was Instantly In love with the little Dutton nose and soft skin. Her newborn baby was seven and a half pounds, which according to Papilla that is the average for newborn babies in the united States (122). S he gave birth to her at the same hospital she was born at, which is Fremont hospital in Yuba City. The only thing that she didn't really like about her stay there was that the R. N. Name in at 4:30 in the morning to weigh the baby, she thinks that 8 am would be a more appropriate time. Else said that right after giving birth she was able to see her baby for about 10 seconds and then wasn't able to see her again for 5 ours due to the complications that happened with the incision. She said that she had a big room and had It all to herself, which was extremely nice because her boyfriend stayed with her the entire time she was in there. She said that he held her hand and kept her happy throughout the entire cesarean delivery.The day after delivery she was able to hold her newborn, but she was extremely sad because she was told that she Isn't allowed to have any more children because of the scaring. Papilla vaginal birth after cesarean should only be attempted with caution (121). So, und erstandable as to why she isn't allowed to have any more children. It surprised her, but she was fine with it because she was fine and her newborn was healthy. The baby was quiet as a newborn. Instead of crying when she's hungry, she would move her head a lot.Right after child birth, she wasn't able to move because her incision was constantly opening up, so her boyfriend did most of the work including changing diapers and bathing the baby. Papilla has stated that the father's role has been increased since sass's and that the father's involvement with the child is related to the child's well-being and physical, cognitive, and social development (139). She breastfed for 2 months, but then the baby decided that she didn't want it anymore, so she had to switch to the bottle.She wanted to make sure that her newborn received the nutrients through her breast milk, so she was sad when she had to switch to the bottle. Papilla recommends breastfeeding to reduce the risk of obesity (147). Obes ity runs in her family. It actually makes it easier because now she doesn't have to worry about pumping milk before she goes to school. Overall, she is much more tired than she was before the baby was born, but she says that the babies mile makes her happier than ever before.The child changed Else's life because she now has 4 little ones that she has to care for, but she said it gives her something to look forward to everyday. She doesn't work anymore, because she decided to start school. She says that nothing has changed dramatically, but she is trying to maintain the same schedule as before. The baby is in a daycare, but the daycare is ran by the baby's grandmother.Throughout the interview, I learned that there is many complications that can come with a cesarean delivery. I didn't know that if you had to much scar tissue that it would be complicated to stitch back up. I also learned that babies freely choose if they want to be breastfed or bottle fed, I had never thought about the possibility of a child deciding that. It was interesting to see how everything related back to the book, especially since I don't have any children of my own. Marmoreal, Papilla, Feldman. (2014). A Child's World: Infancy Through Adolescence. Thirteenth Edition. New York: McGraw Hill.