Thursday, December 26, 2019
Critique on Open City Essays - 1116 Words
Critique on Open City ââ¬Å"Open Cityâ⬠is a neo-realist film that followed the movement in Italy during World War 2. The film is neo-realistic because it has that ââ¬Ërealityââ¬â¢ like feeling to it by following specific characters through their daily stressful lives that are screwed up from poverty and war. It has many qualities that make it in some ways ââ¬Ëcloserââ¬â¢ to the characters. While watching, the viewer is sucked into the story and immediately feeling emotional with the families and the other various characters in the film. The main reason is Rossellinis choosing dramatic music and kids with big eyes. This film is divided into two separate parts. First, is a story that shows a situation in Italy during the Nazi occupation of World Warâ⬠¦show more contentâ⬠¦As mentioned, the young kids are the hope and the only time the to be husband was saved was by the young boy distracting him. Russolini shows more of the kids being the saviors. At the very end shows hope as the kids walk towards the city. Basically ââ¬Ëlifting the moodââ¬â¢ of the ending by showing the boys their future world will be brighter than the one into which they were born into. The main problem with the copy we watched is the translationsââ¬âthey were incomplete. It maybe is nothing relevant to the film as a whole, but it drives curiosity to know just what those extra words were. This somehow accumulates throughout the movie making it a bit frustrating. The movie is good by making things unbearable for the many characters. It really showed us how evil the Nazi occupation was like as in good people getting caught in betrayal, hunger, and the force of sadness and death. There is even a part where the Nazi-ism felt like it had a bit of lesbianism. Not that there is anything wrong with homosexuality, but the part when the sister was seduced by the same chick that was like an insider on the whereabouts of the ââ¬Ërevolutionistââ¬â¢ men in the film. There is some emphasis on religion. This is expected, because after-all it was shot and directed by people from Italy! This religion aspect is shown through a priest character that is forced to face the possibility that the Nazis simply are evil. The priest realizes that he canââ¬â¢t fight these Nazi-guysShow MoreRelatedGrad School Application Essay1127 Words à |à 5 Pagesarchitecture students and professionals visiting Chandigarh on how it feels having grown up and educated from this city - a single stroke, paradigm shifting undertaking by the father of modernism himself. I reply with an inherently paradoxical answer. While on one hand it has served as a major source of my exposure towards architecture and urbanism, alongside shaping my perception and critique of urbanity, it has also engendered in me a curiosity towards the ââ¬Ëotherââ¬â¢, the traditional, emergent and incrementalRead MoreUtopi A Critique Of 17th And 16th Century English And European Society1416 Words à |à 6 PagesPaper 3: Utopia Sir Thomas Moreââ¬â¢s Utopia offers a critique of 15th and 16th century English and European society. He offers this criticism through a fictitious recount of world traveler Raphael Hythlodayââ¬â¢s journey to the land of Utopia. More brilliantly expresses his criticisms of society through the voice of Hythloday, primarily so none of his views, no matter how outlandish, couldnââ¬â¢t technically be tied back to him. This societal critique was one of the most famous works produced from the RenaissanceRead MoreThe Ones Who Walk Away From Omelas Summary1294 Words à |à 6 PagesMy Review on: The Ones Who Walk Away from Omelas The story opens with a description of Setting up a city, followed by narration of real or imaginary events. This tale won the Hugo Award for Best Story of 1974, which is offered annually for a science fiction or fantasy story, considered a classic of the science fiction genre. His premise is based on a moral dilemma, posed by the philosopher William James, who imagined what would be a hideous happiness if it depended on the suffering of a childRead MoreConformity And Exclusion In Los Cachorros908 Words à |à 4 PagesVargas Llosaââ¬â¢s younger literary publications were laced with Marxist critiques of a transitioning Latin American society in the 20th century, and though on the surface, ââ¬Å"Los Cachorrosâ⬠may seem little more than a fictional coming of age narrative, the allegorical short story is no exception. Told through an encyclopaedic tour of Limaââ¬â¢s urban spaces, a pack of boysââ¬â¢ transition into young men and their interactions with the city reflect bo th the rigidity and fragmentation of the Peruvian communityRead MoreThe Link in Bringing the City and People Together with Urban Design691 Words à |à 3 PagesBringing the City and People Together There is a precedent need for the presence of urban design. Urban design is the collection of arranged urban structures that creates functional spaces for people. This is an interdisciplinary practice that can involve multiple actors in fields such as urban planning, architecture, engineering, landscaping, economics, law, and many more. Strong urban designs can lead to the success of linking built structure together to create a unique space open to interpretationRead MoreLatin American Authors Influence On Mexican Culture1698 Words à |à 7 Pagescommiting to the viewpoint himself. He also occasionaly resorts to an open scathing critique. He uses this most notably when talking about the phenomenon of machismo, whoââ¬â¢s views he reproduces above, saying that the macho ââ¬Å"Es el poder, aislado en su misma potencia, sin relacià ³n ni compromiso con el mundo exteriorâ⬠and ââ¬Å"no pertenece a nuestro mundo; no es de nuestra ciudad; no vive en nuestro barrioâ⬠, a muc h less subtle critique here. Narrating the existing state of the nation is partly facilitatedRead MoreBiographical Sketch Of William Kristol Essay753 Words à |à 4 PagesBiographical Sketch. William Kristol was born in New York City in 1952. Upon earning his PhD from Harvard University, he taught politics at both the University of Pennsylvania (1979-1983) before returning to Harvard (1983-1985). Later he served the Reagan and George H. W. Bush administrations. Today, he is the editor of The Weekly Standard and makes regular appearances on FOX News. Mr. Kristol co-authored, The War Over Iraq: Americaââ¬â¢s Mission and Saddamââ¬â¢s Tyranny as well as several other books.Read MoreA Critique Of Leadership Style1132 Words à |à 5 PagesLEADERSHIP CRITIQUE This paper is a critique of preceptor leadership methods. I will describe my current preceptorââ¬â¢s leadership style, giving an example of an observed valuable leadership strategy and why I found it to be successful. Shadowed by an example of an observed unsuccessful leadership strategy, how I responded, and a recommended strategy for the situation described. Ending with the type of leader I aspire to be in the future and my final thought regarding leadership. Preceptor LeadershipRead MoreAristotleââ¬â¢s Examination of the Lacedaemonian Constitution in his Work, Politics1208 Words à |à 5 PagesAristotle makes is in regards to the equality that is found among men and women in Spartan society and the laws that grant the license of Lacedaemonian women. Spartan women were viewed by the state in a much higher status than the women of other Greek city-states, including Athens which Aristotle made his home for his adult life. The reasoning behind this attitude towards women comes from the Spartan women being the mothers of the great Spartan warriors as well as the trustee of the state when the SpartanRead MoreReview and Critique of Massachusetts Law 40B Essay1069 Words à |à 5 PagesGeneral Laws chapter 40B between housing advocates and open space advocates. This thesis reviews and critiques the current law, and diagnoses various legislative proposals for the progressive feud. One would generally assume advocates of affordable housing and open space preservation are political and ideological allies as affordable, decent housing has been a mainstay of the progressive view since the Great Society of Lyndon Johnson, and open space preservation came to the forefront as a part of
Tuesday, December 17, 2019
Positive Ranking of Cannabis - 1299 Words
Because of the copious amount of medical data on the benefits of Cannabis, its low addiction rate and its lack of negative side effects make Cannabis fit the schedule 2 substance instead of the schedule 1 ranking.The earliest uses for cannabis date back to ancient China. It was used for medical remedies. Currently there is scientific evidence to back up the claim that it can help fight illness, including cancer. This has been hypothesized by many in the scientific community. But not until recently have studies been completed ranging from large-scale case studies to testing on animals. The evidence is becoming increasingly common that cannabis reduces tumors in animals as well as in humans. A study done by Harvard Medical shows that it reduced the tumors. Cumulatively, these studies indicate that THC has anti-tumorigenic and anti-metastatic effects against lung cancer. This was an experiment that used cannabis to treat cancer in mice. The results were that there was a significant redu ction of lung cancer in mice. Harvard Medical concluded that the two anti-tumor properties of cannabis, anti-proliferative and anti-androgenic, have beneficial effects in the cure of lung cancer. When used in treatment, the substance, THC, does not compromise human cells. THC (5mg/kg body wt.) was administered once daily through intraperitoneal injections for 21 days. The mice were analyzed for tumor growth and lung metastasis. A significant reduction (approximately 50%) in tumor weight andShow MoreRelatedShould Marijuana Be Legal? Cannabis?1724 Words à |à 7 Pages Many people say that medical cannabis heals diseases and helps symptoms, and other illnesses such as, sleep disorders, psychological disorders, Alzheimer s, and many different issues that affect individuals and their families every day. Cannabis plants can grow in the wild or with the help of humans in an indoor hydroponic system; outdoors marijuana grows in tropical, temperate areas in any climate. Marijuana, an extra ct from cannabis, is made from dried cannabis leaves and flowers that are composedRead MoreSex Abuse And Substance Abuse917 Words à |à 4 Pagesamong this population; not only for the initial mental disorders but also for the stress and environment circumstance while imprisonment. Unfortunately, less than 10% of substance abuse prisoner received treatment during incarcerations; however, the positive influence in economic is remarkable that the nation would save $91,000 per year for each inmate (Columbia Univ., New York, NY. Centre on Addiction and Substance Abuse, 2010). Therefore, it is urgent to prevent and treat substance abuse and dependenceRead MoreThe Issue Of Marijuana Legalization Essay1527 Words à |à 7 PagesMexican Revolution ended in 1910. After their revolution, many people from Mexico brought with them their customs their ideas and with them they brought their use of marijuana as a relaxant and medicine for many ailments. Even though, the use of cannabis was alrea dy prevalent in America at the time, the term ââ¬Å"marihuanaâ⬠was attached to it and with it led to the dirty outlook of it because of the significant influx of immigration to states like Texas and Louisiana was taking away jobs and other opportunitiesRead MoreEssay on weed2136 Words à |à 9 Pagesdealing with I will give a brief explanation of what Marijuana is and what itââ¬â¢s uses are. Marijuana is classified as a hallucinogen and is a psychoactive drug. Its scientific name is Cannabis Sativa and it is found in the Indian hemp plant, of which there are three main types; Cannabis Sativa, Cannabis Indica, and Cannabis Rudderalis. Some of its nicknames and street names are pot, weed, green, herb, and sensi. The drugs use dates back in manuscripts back to 2700B.C. in China (Nadelmann). The drug wasRead MoreHemp Cultivation in China42289 Words à |à 170 PagesInternational Hemp Association Hemp (Cannabis sativa L.) Cultivation in the Tai an District of Shandong Province, Peoples Republic of China Robert C. Clarke Naturetex International B.V. Van Diemenstraat 192 1013 CP Amsterdam The Netherlands Clarke, R.C. 1995. Hemp (Cannabis sativa L.) Cultivation in the Tai an District of Shandong Province, Peoples Republic of China. Journal of the International Hemp Association 2(2): 57, 60-65. This paper summarizes the history of hemp (Cannabis sativa L.) cultivation andRead MoreInternet Addiction : Social Network Addiction3921 Words à |à 16 PagesThese symptoms all relating to drug addictions however vary in how they are portrayed and level of seriousness. More distressing information is that Rob Waugh (2012) has identified DA having a similar effect in the brain as the people exposed to cannabis, alcohol and even cocaine. There has been evidence of disruption in the ââ¬Ëwhite matterââ¬â¢ nerve fibres connecting vital parts of the brain. The study used a picture of the nerve fibres using a method of fractional anisotropy. Dunkley (2014) has writtenRead MoreSocio-Economic Issues in India5247 Words à |à 21 PagesPoverty in India One-third of Indias population (roughly equivalent to the entire population of the United States) lives below the poverty line and India is home to one-third of the worlds poor people. Though the middle class has gained from recent positive economic developments, India suffers from substantial poverty. According to the new World Banks estimates on poverty based on 2005 data, India has 456 million people, 41.6% of its population, living below the new international poverty line of $1Read MorePrimary Sector of Economy17717 Words à |à 71 Pagestelecommunication, information technology and other significant areas such as auto components, chemicals, apparels, pharmaceuticals, and jewellery. Despite a surge in foreign investments, rigid FDI policies were a significant hindrance. However, due to positive economic reforms aimed at deregulating the economy and stimulating foreign investment, India has positioned itself as one of the front-runners of the rapidly growing Asia-Pacific region.[124] India has a large pool of skilled managerial and technical
Monday, December 9, 2019
Data Mining and Information Privacy â⬠Free Samples to Students
Question: Discussn about the Data Mining and Information Privacy. Answer: Introduction On July 2017 a California Real Estate Business Service (REBS) was at the center of data breach where it lost very sensitive information from its customers. REBS has online payment system helps the organization in selling its real estate products such as software, forms, blank home sales contracts and classes. The payment system was infected with malware which was believed to be active in the system up May 15 2017 when it was recognized by one of the customer and reported the instance (Robbins, 2017). Malware target was to extract some information when user of the system made their payment. Customers personal information was being copied by the malware to a third party who could then use information for personal gain. Some of the information that was lost by the company include; credit card numbers and credit card expiry date, user names, home addresses and transaction verification code. The hacker gained access to California Association of Realtors (CAR) by affiliating themselves to Association of Realtors (AOR) website. In the data breach, it was estimated that over 1,000 members users information had been fraudulently accessed. Despite having installed the malware and virus protection software, hackers were still able to get access to the system and copy some sensitive information. Similarly, an extensive analysis of the problem shows how the system was poorly protected. If the company had invested heavily on security of its system, it would be difficult for the hackers to bypass security features that were in place. Due to lack of strong security features, customers credit card numbers and their security codes were stolen. Stolen information was used by hackers to bill fraudulent charges to customers once they used their cards on the REBS website for payments. Therefore, the main issues in this case are security of the system and losses that REBS might have suffered as a result of security breach (Olenick et al, 2017). As a result of the security lapse, it is now evident how organization has made its customers suffer financial losses which should have been prevented. If REBS case is not well handled, such scenario might end up repeating itself hence compromising integrity of the organization. The problem which faced REBS can mainly be attributed to technologic al hitches that were either poor or not properly implemented to secure organizational information. Since its very clear system security has been a major problem, organization did not put security alerts on the system to make sure in case of any problem, either the customer or the company gets a notification. Nature of occurrence The REBS data breach occurred through a hacker installing a malware on the payment system which helped in collecting personal information which was later used to defraud customers. By installing some malware on the payment system, hackers were able to collect information and send it to a third party. Through Association of Realtors (AOR) website, hacker managed to infiltrate and get access to REBS system. Once required information was collected, it become possible for hackers to start charging customers unrealistic arrears from their credit cards once they made payment through REBS payment system. The main reason of the attack was to get information which could later help in siphoning some cash from innocent customers without their knowledge (Spacek, 2017). The other main reason for the attacker might be to compromise integrity of the company where another company would benefit by attracting customers from the latter. By damaging image of a competitor, the beneficiary gains a lot bec ause some of the customers form the competitor might end up acquiring services from the other company. Therefore, the usefulness of the data has gained substantial importance and such data might be used to gain competitive market advantage as well as monetary value to hackers who billed unnecessary charges to customers. To solve data breaches faced by REBS Company, it would have been important to employ security measures which would guarantee organizational security to its operational data and customers. Some of the possible solutions includes; putting down all operations on the system and an investigation being carried out to determine the extent of damage that might have been caused by hackers (Fowler, 2016). This helps in ensuring there are no other malicious operations that could continue within the system. Evaluation is essential to determine how the access was made and the motive behind the attacker so that necessary security features can be taken to protect the organizational data. Next, according to Gupta, Walp, Sharman (2012), all users of the system need to be notified so that they are able to monitors their credit cards activities. This would help customers to avoid extra charges that might be imposed by hackers without their knowledge. To enhance security customers, their credit cards s hould be able to generate an alert message on any activities done (Dawson, Eltayeb Omar, 2016). Organization has to take responsibility of advising its customers so that they can be able to monitor any suspicious transactions. Additionally, Shabtai, Elovici Rokach (2012) argues that, before system transaction can be taken put again for use, very strong security features need to be put in place. Shinder, Diogenes Shinder (2013) stipulates that, encryption of data is important because it makes data useless unless hacker has encryption key. This would make sure once data is keyed into the system, no one can make use of it without required authorization. Finally, REBS made a good decision of changing their payment method. It shifted all payments from the compromised online system to PayPal method where security is guaranteed by Federal government. Ransomware cyber-attack on the web Ransomware cyber-attack was a web-based attack that targeted devices such as computers, tablets and smartphones. An infected machine could lock itself and request for Ransomware unlock key. This is a big threat because none of these machine owners could get unlock key. The malware was being spread from one computer and tablets through websites. When a user clicked on an infected website while browsing, the malware could enter the machine and locks it without users knowledge. According to Wong Solon (2017), every website that had been hacked using Ransomware was itself a victim and could infect other websites and machines that connect to any of the infected websites. It was so hectic such that, with every 40 seconds, a company was being infected with Ransomware. The malware was believed to have originated from cyber weapons attack theft and was highly linked to United States government. Due to its massive nature of attacker, it has been believed to be an awakening call to cyber-secur ity experts and organizations. The effects of Ransomware was quite diverse as it included both individuals and institutions. The malware was not made for specific group or any target, it was a general malware which could affect as many groups as possible. Organizations using computers to connect online was highly affected because Ransomware was being spread online through websites or any sharable link. By comparing the nature of the attacker, it can be deduced that organizations and that mostly depends on legacy systems were more vulnerable to the attacker. A good example of an organization that was hit by Ransomware was England National Health Service (NHS) where hospital staff were locked out of their computers (Ransomware cyber-attack strikes world's biggest firms, 2017).This was very devastating as it forced some of the hospitals to divert its patients to other unaffected hospitals. Emphasis cannot be subjected to large organizations only because Ransomware had capability of locking even small gadgets such as smartphones and tablets leaving their owners unable to access them. The malware infects the subject machine, encrypts users data and demands for some payments in order to unlock the data. Methodologies of the attacker The REBS attacker was made so easy but complex to avoid because targeted it was spreading through websites which are commonly used by internet users. It was very unfortunate for organizations that uses online systems because they had to connect online for transactions to be done. Once online, employees of the organization must visit other sites such as social network using same machines. In such a scenario, it would be very difficult to avoid Ransomware attacker. According to Turner, Kotoky Wienberg (2017), by just clicking any link that leads to an infected website, the subject machine would still get infected. Next, the Ransomware attacker was happening through emails, an email could be sent to a target individual, once the user clicks on the email, it could open resulting to locking of the computer. Taking an account of how the attacker was being spread, it was very easy to become a victim and that was the main reason it was being estimated that, after every 40seconds, an organiz ation was getting infected with the malware. Once the attacker occurred, the device could be unlocked by making some payment to the hackers in order to unlock the infected computer or tablet. Possible solution to prevent the attacker Being very simple but sophisticated attacker, it was difficult to prevent it but once information about the malware hit the sky, it was possible for an infected organizations to avoid. After detecting it was being spread through visiting websites and emails, organization should have taken measures of educating their employees on how to avert the attacker (Gupta, Agrawal Yamaguchi, 2016). Through education, organizational employees who are daily users of organizational computers would avoid online activities as much as possible. After making them aware of the malware availability, organizational IT expert groups should have gone ahead to unlock all computers in order to prevent them from connecting online (Thomas, 2014). Additionally, organization should remind employees of any suspicious emails, if they have suspicion of any email in their working emails, they should immediately alert IT professionals to have a check on them and take necessary actions. This could be done by configur ing organizational firewall such that it does not allow any online activity from within the organization (Mellado, 2013). Similarly, since employees have their own devices such as smartphones and tablets and they are in their control, organization should prohibit connection of their personal devices with organizational computers. This would solve a problem where they visit some websites such as social network sites then try to connect their devices with organizational computers. Finally, to organizations that work online, it would be wise to start putting down their online transaction to avoid malware attacker (Moore, 2017). It would not be of any value to continue with operations that would later be very devastating. Imagining an organization is a hospital system such as England case, waiting until an attacker happens may be very dangerous because it may result to patient harm or even death. According to Eyob (2009), looking for an alternative in advance once news about the malware come up might be the best option rather than waiting for disaster by use of ostrich method approach. Therefore, taking all of these measures would have averted the malware attacker. Hence saving organizational money and disruption that might occur. References Dawson, M., Eltayeb, M., Omar, M. (2016). Security Solutions for Hyperconnectivity and the Internet of Things. Hershey: IGI Global. Doug Olenick, O., Abel, R., Olenick, D., Masters, G., Olenick, D. (2017). Data Breach hits California Association of Realtors. SC Media US. Retrieved 27 August 2017, from https://www.scmagazine.com/data-breach-hits-california-association-of- realtors/article/673795/ Eyob, E. (2009). Social implications of data mining and information privacy: Interdisciplinary frameworks and solutions. Hershey: Information Science Reference. Fowler, K. (2016). Data breach preparation and response: Breaches are certain, impact is not. Gupta, B., Agrawal, D. P., Yamaguchi, S. (2016). Handbook of research on modern cryptographic solutions for computer and cyber security. Hershey: Information Science Gupta, M., Walp, J., Sharman, R. (2012). Strategic and practical approaches for information security governance: Technologies and applied solutions. Hershey, PA: Information Science . Mellado, D. (2013). IT security governance innovations: Theory and research. Hershey, PA: Information Science Reference. Moore, M. (2017). Cyber security breaches and issues surrounding online threat protection. Ransomware cyber-attack strikes world's biggest firms. (2017). ITV News. Retrieved 27 August 2017, from https://www.itv.com/news/2017-06-27/ransomware-cyber-attack-strikes- worlds- biggest-firms/ Robbins, G. (2017). California Association of Realtors subsidiary suffers major data breach. sandiegouniontribune.com. Retrieved 27 August 2017, from https://www.sandiegouniontribune.com/news/cyber-life/sd-me-rebs-breach-20170709-story.html Shabtai, A., Elovici, Y., Rokach, L. (2012). A survey of data leakage detection and prevention solutions. New York: Springer. Shinder, T. W., Diogenes, Y., Shinder, D. L. (2013). Windows server 2012 security from end to edge and beyond: Architecting, designing, planning, and deploying Windows server 2012 security solutions. Amsterdam: Elsevier. Spacek, R. (2017). Data breach hits California Assn. of Realtors subsidiary. latimes.com. Retrieved 27 August 2017, from https://www.latimes.com/business/la-fi-reb-data-breach- 20170710-story.html Thomas, L. M. (2014). Thomas on data breach: A practical guide to handling data breach notifications worldwide. Eagan, MN: Thomson Reuters/Westlaw. Turner, M., Kotoky, M., Wienberg, M. (2017). Ransomware Cyber-attack Goes Global.Bloomberg.com. Retrieved 28 August 2017, from https://www.bloomberg.com/news/articles/2017-06-28/cyberattack-reaches-asia-as-new- targets-hit-by-ransomware-demand Wong, J., Solon, O. (2017). Massive ransomware cyber-attack hits nearly 100 countries around the world. the Guardian. Retrieved 27 August 2017, fromhttps://www.theguardian.com/technology/2017/may/12/global-cyber-attack-ransomware- nsa-uk-nhs
Monday, December 2, 2019
Paris Noir Essays - Unsung, , Term Papers
Paris Noir Paris Noir One of America's great dark periods of the 20th Century was the treatment of African Americans that lasted well after they had been freed. In a country that celebrated its freedom, its government of the people and by the people, a good number of its people remained enslaved by injustice. Blacks remained poor, uneducated, and segregated because whites needed someone to blame their troubles on and they needed someone to work for less. It's sad to think how and institute of hate can be so strong and how little people could to think for themselves. The book Paris Noir is refreshing and enlightening. There's a lot of history out there that remains unsung, the greatest tragedy of history books is the lack of a unbiased view of what's important. Luckily we live in a time where history is being examined closer and more impartially, but there's still a long way to go. I think history books continue to really overlook this prevailing issue in the American Armed Forces in World War I. It's stunning to learn how black troops were treated and how little they were rewarded. They provided a great service for America a service that has gone largely unsung. Thankfully, there are places in such a sad world where blacks are not treated so harshly. In France and more specifically Paris, blacks found a place that resembled the near equal society they had hoped America to become. The French greatly appreciated their efforts and applauded their efforts even when America would deny them any recognition.
Wednesday, November 27, 2019
Oxidation and Reduction Reactions (Redox Reactions)
Oxidation and Reduction Reactions (Redox Reactions) This is an introduction to oxidation-reduction reactions, also known as redox reactions. Learn what redox reactions are, get examples of oxidation-reduction reactions, and find out why redox reactions are important. What Is an Oxidation-Reduction or Redox Reaction? Any chemical reaction in which the oxidation numbers (oxidation states) of the atoms are changed is an oxidation-reduction reaction. Such reactions are also known as redox reactions, which is shorthand for reduction-oxidation reactions. Oxidation and Reduction Oxidation involves an increase in oxidation number, while reduction involves a decrease in oxidation number. Usually,ââ¬â¹ the change in oxidation number is associated with a gain or loss of electrons, but there are some redox reactions (e.g., covalent bonding) that do not involve electron transfer. Depending on the chemical reaction, oxidation and reduction may involve any of the following for a given atom, ion, or molecule: Oxidation involves the loss of electrons or hydrogen OR gain of oxygen OR increase in oxidation state.Reduction involves the gain of electrons or hydrogen OR loss of oxygen OR decrease in oxidation state. Example of an Oxidation-Reduction Reaction The reaction between hydrogen and fluorine is an example of an oxidation-reduction reaction: H2 F2 ââ â 2 HF The overall reaction may be written as two half-reactions: H2 ââ â 2 H 2 eâËâ (the oxidation reaction) F2 2 eâËâ ââ â 2 FâËâ (the reduction reaction) There is no net change in charge in a redox reaction so the excess electrons in the oxidation reaction must equal the number of electrons consumed by the reduction reaction. The ions combine to form hydrogen fluoride: H2 F2 ââ â 2 H 2 FâËâ ââ â 2 HF Importance of Redox Reactions The electron transfer system in cells and oxidation of glucose in the human body are examples of redox reactions. Oxidation-reduction reactions are vital for biochemical reactions and industrial processes as well. Redox reactions are used to reduce ores to obtain metals, to produce electrochemical cells, to convert ammonia into nitric acid for fertilizers, and to coat compact discs.
Saturday, November 23, 2019
Personal Customs Exemptions for Returning Canadians
Personal Customs Exemptions for Returning Canadians If you are a Canadian resident or temporary resident of Canada returning to Canada from a trip outside the country, or a former Canadian resident returning to live in Canada, you may qualify for a personal exemption to bring a certain value of goods into Canada without having to pay the regular duties. You will still have to pay duties, taxes and any provincial/territory assessments on the value of goods above your personal exemption. Children, even babies, are entitled to a personal exemption. A parent or guardian can make a declaration on the childs behalf as long as the goods being declared are for the childs use. The amount you claim for your personal exemption must be reported in Canadian dollars. Use a foreign exchange converter to change foreign currencies into Canadian dollars. The personal exemption for returning Canadian residents depends on the length of time you have been outside of Canada. The personal exemptions for Canadian residents have been increased effective June 1, 2012. The new exemption limits go up to CAN$200 from CAN$50 for absences of 24 hours or longer, and up to CAN$800 if youre out of the country longer than 48 hours. After a 7-day absence, you are allowed to include goods that will follow you by mail or another delivery method. Outside Canada for Less Than 24 Hours No exemption. Outside Canada for 24 Hours or More If you are outside Canada for 24 hours or more, you may claim a personal exemption of up to CAN$200 worth of goodsthe goods must accompany youtobacco or alcohol mayà not be claimed in this exemption Note: If you bring in goods worth more than CAN$200 in total, you cannot claim this exemption. Instead, you have to pay full duties on all the goods you bring in. Outside Canada for 48 Hours or More If you are outside Canada for 48 hours or more, you may claim a personal exemption of up to CAN$800 worth of goodsthe goods must accompany youyou can include some tobacco products and alcohol, but only a partial exemption may apply to cigarettes, tobacco products or manufactured tobacco. Outside Canada for 7 Days or More To calculate the number of days you have been outside Canada for the purposes of this personal exemption, do not include the day you left Canada but do include the day you returned. If you are outside Canada for 7 days or more, you may claim a personal exemption of up to CAN$800 worth of goodsyou can include some tobacco products and alcohol, but only a partial exemption may apply to cigarettes, tobacco products or manufactured tobacco.alcohol and tobacco products must accompany youother goods do not need to accompany you when you cross the border.
Thursday, November 21, 2019
Islamic art Essay Example | Topics and Well Written Essays - 2250 words
Islamic art - Essay Example Islamic art often adopts worldly elements and elements that are frowned upon, if not prohibited, by some Islamic theologians. The initial stages of Islamic art: The period of swift development of the Islamic epoch forms a convincingly accurate beginning for the label of Islamic art. Diverse Art conceptions have found in the history such as: Umayyad art Abbasid art Spain and the Maghreb Egypt and Syria Iran and Central Asia. Fatimid period (969-1175): The Fatimids manifestly had a taste for carefully made-up gold work and complicatedly engraved vessels of rock crystal, a type of translucent, monochrome quartz whose exterior can be luminously polished. The glass working was also a highly urbanized art form. The lavishness of the Fatimid court fueled resurgence in the ornamental arts, which made Cairo the most significant cultural core in the Islamic world. Nearby, Old Cairo, known as al-Fustat, became a chief center for the manufacturing of pottery, glass, and metalwork, and rock-cryst al, ivory, and wood carving, textile factories run by management officials created tiraz fabrics in the name of the caliph somewhere else in the Egyptian district, particularly the Nile Delta. The artwork from this era exemplifies the inventiveness and resourcefulness of Fatimid craftsmen. The procedure of lusterware on ceramic, developed in the beginning in Iraq, was invigorated in Egypt and Syria. Some lusterware pieces from this age are signed by their makers, a sign of the admiration in which the craftsmen were kept. Wood statuette and jewelry were executed with equivalent dexterity and creativity. Fatimid artists created new enhancing motifs and made better use of figural forms, both human and animal. Figures were stylized but vigorous, while customary vegetal and geometric ornaments maintained their conceptual excellence. Artists of this time revitalized or sustained previous techniques but gave them their own distinguishing stamp. The Abbasid period (8th-13th): in the Abbasid rule, which succeeded the Umayyads (661ââ¬â750), the central spot of Islamic political and artistic living shifted eastward from Syria to Iraq, where, in 762, Baghdad, the circular City of Peace (madinat al-salam), was founded as the new center. The former two centuries of Abbasid rule saw the appearance and spreading of a new Islamic approach of art where the introduction of purely Islamic forms and techniques took place. Textiles: Of the numerous varied arts that prospered in the Abbasid period, textiles played a particularly momentous character in civilization, one that sustained in succeeding periods. Textiles were omnipresent in Islamic lands, allocated as clothes, domestic furnishings, and convenient architecture (tents). The production of and buying and selling in textiles were exceedingly classy and lucrative industries that built upon Byzantine and Sasanian background. Often made with expensive supplies such as silk and gold and silver wrapped yarn and adorned with com posite designs, textiles were lavish goods suggestive of wealth and social standing. Islamic textiles were also broadly exported to the West, where their eminence is underscored by their effect on European languages. Did you know that the English words "cotton" and "taffeta" are obtained, respectively, from Arabic and Persian? Pottery: The skill of pottery was profoundly developed in the ninth
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