Sunday, January 26, 2020

Iconic Images of the 1980s

Iconic Images of the 1980s Images of 1980s Speaking of 1980s often people think about Reagan, â€Å"Greed is good†, and funny hair styles. Of course the 80s were more than that, but if you asked me what I am thinking about the 1980s it would be a longest â€Å"Mhm† followed by â€Å"I was not even born yet.† However, images can be a tool for us to study the detail of history. The greatest thing about learning history for a visual person is to look into photos. Each and every photograph has a story to tell. Ever since the technology of modern camera was introduce in the 18 century, people have been using this technique to capture memorable moments.   Ã‚   Photography in the 1980s was personal and political, or a mixture of both. Nevertheless, thanks to the photographers who are there to capture events, the future generation can study them. What happened at the scene of Reagan’s attempted Assassination? How big was the crowed when the Berlin wall fell down at 1989? What did Chernobyl look like after the explosion? I believe those events had already been symbolized. Some say â€Å"history always repeats itself.† That is somehow true if we look deeper into every decades. The world still has the same problems that happened before. What is so special about the 1980s is that is a historical turning point. Through several iconic photos of the 1980s the decade can be seen as one plagued with wars, tragic events and political unrest, but it was also a decade where freedom and human rights were advanced. Afghan Girl, 1985 (See Figure 1) The Soviet Invasion of Afghanistan during 1977-1980 might been seen as a milestone of U.S. history due to the help we have been giving, but due to poor Sharbat Gula and her family it is not an event to be celebrated. In 1985, National Geographic photographer Steve McCurry shot a portrait of a 12 year-old Afghan girl named Sharbat Gula made it to the cover of National Geographic Magazine. However, what people could not see in the photo â€Å"Afghan Girl† was the reason that caused Sharbat Gula’s sorrow eyes. From 1979 to 1989, the Soviet invasion of Afghanistan armed with Arab resistance launched a war of aggression and counter-aggression. The evening of December 27, the Soviet Union deployed eight divisions, Special Forces, and airborne troops in a brutal military invasion of Afghanistan. In only three and a half hours, they gained â€Å"complete military and political control of Kabul and large portions of the country† (Office of Historian) Until early 1980, 8.5 million troops invaded which gradually increased to 10 million people. There were almost 10 years long of ongoing civil wars, invasions and conflicts in Afghanistan. Unfortunately, little Sharbat Gula was born into this event. After the Soviet invasion of blatant military, the Afghan people in the nation in danger of life and death, the original anti-government revolutionary activity soon developed into a larger anti-Soviet war against the Soviet Union. According to the article â€Å"A Life Revealed: Along Afghanistans War-torn Frontier† by Debra Denker, Sharbat Gula’s village was bombed and invaded by Soviet Union around the early 80s. Unfortunately, Sharbat Gula’s parents were killed by bombing, about 100 people died from war, 600 million people were forced to flee their homes and become refugees. Later, photographer Steve McCurry visited Afghanistan, and was given a â€Å"war-torn frontier.† tour. In one of the refugee camps, he ca ptured the hunting face of Sharbat Gula among other similar age girls. Sharbat Gula’s portrait became the symbol of post war fear of the Muslim world (Denker). In 1988, under the auspices of the UN Secretary General Javier Perez de Cuellar, the Soviet Union, the United States, Afghanistan and Pakistan met in in Kabul and their four foreign ministers signed in Geneva a political settlement for Afghanistan. The Soviet troops had to withdraw from Afghanistan within nine months, putting an end of a nine-year occupation (Dibb). Wars and conflicts are a never ending nightmare which is still haunting us today. The look on Sharbat Gula’s face fully expressed that. The Reagan Assassination Attempt, 1981 (See figure 2) Same time at the early 80s, the most serious incident which happened to President Ronald Wilson Reagan was when he got shot just outside the Washington Hilton Hotel by a young man named John Hinckley Jr. In the photo of the scene right after the shooting, reporters were making roars within the crowed, few officers holding a gun down on the sidewalk, and the president was thrown into the limo car. It was chaotic. The gunman was held immediately after the shooting. This event shocked the entire society for Reagan had only been elected to be a president for ten weeks. President Reagan was heading to the white house unaware that he had been shot. Shortly after he left the scene, he did not realize one of the ricochets punctured his lung until he started coughing up blood. He then was rushed to George Washington University Hospital. The New York Times reported President Reagan remained in good humor even he was fainted due to the blood loss. He told his doctors, â€Å"Please tell me youà ¢â‚¬â„¢re Republicans† (Raines). Fortunately, President Reagan survived after the operation, and recovered after weeks. The motive to assassinate the President surprisingly had nothing to do with political reasons, but with John Hinckley’s obsession with actress Jodie Foster. This obsession was based on the movie Taxi Driver.† He firmly believed that if he became famous by mimicking the plot from Taxi Driver, would be able to get Jodie Foster’s attention. What happened to gunman John Hinckley afterward was 13 charged against him. However, due to his mental problem, the court sent him to St. Elizabeths Hospital for life instead of prison. The unsuccessful attempted assassination brought dramatic changes to Reagans presidency. His survival boosted a wave of public sympathy and he gained popularity. He was also the first president who survived the assassination (Brands). Although politics was not the reason why John Hinckley opened fire, it is still one of the many major political events in the 1980s. Chernobyl Accident 1986 (See Figure 3) Besides wars and political unrest, there was a major unclear accident happened at Chernobyl, Ukraine. The photo that taken by authorities right after the accident shows the explosion had destroyed the entire building to a hollow hole on the ground. What happened was that event management and technical staff decided to test the turbine in case of a sudden loss of power, the strain of the reactor. This overnight test was neither carefully planned nor authorized by superiors. On the afternoon of April 25, 1986, the unit fourth in accordance with the plan was shut down, when the operation began an experiment related to the security system. The case of this experiment is to understand the plant loses all power, but the rotating turbine has enough energy capable of supplying electric power for 45 seconds, which is the time required to start the emergency diesel generator supply. The reactor power is reduced to half of the rated output, and the emergency reactor core cooling system is turne d off. After 11:10, the staffs did not re-open the emergency cooling system, which was the first major mistake, according to a series of serious negligence operations are: the output power was reduced to one percent of rated output, much lower than the power required for the experiment; the majority of the control rods withdrawn; and the other important safety system was turned off. These operational mistakes made the unit fourth become unstable. Output had been rising rapidly, technical workers lost control of the reactor, output power rose to up to 100 times the rated output, and thus part of the fuel rods ruptures, and the heat burst a lot of things to make the cooling water evaporation, resulting in a steam explosion destroying a weight of about 1,000 tonnes of reactor cover. From May 1 to 6, due to the reactor explosion, more than 26 percent of the radiation dose was released into the outside world, 31 firefighters and two people from the plant lost their lives, most of them have been severely burned from radiation, while 209 suffered severe radiation injuries (U.S.NRC). Strictly speaking, the Chernobyl accident cannot be called a human error. It was more like a willful violation. It seemed following the scheduled timetable was seen as more important than safety. Staff were prohibited from running the operation under low power, and stopped safety device testing. It was like in travel a little faster by car, removing the brakes in the car regardless of rules or safety, and just desperately rushing forward to the destination, leading to a monstrous disaster. 25 years later today, the area outside of Chernobyl nuclear plant still reminds uninhabitable. People’s belongings still stay in the same spots, but not a trace of life in sight. The fall of the Berlin Wall, 1989 (See figure 4) Finally, the voice of freedom is rising at the end of 1980s. After nearly three decades of separation, the Berlin Wall finally fell down on the evening of November 9, 1989. A photo taken by Associated Press captured the moment when demonstrators tore down a piece of the Berlin wall. Berlin Wall and the wall that speared North and South Korea right now is the same product after World War II. After World War II, Germany and Berlin by the Soviet Union, the United States, Britain and France divided Germany into four zones. In 1949, the Soviet Union occupied East Germany, the capital set in East Berlin. West Germany and the US and British law were established in the occupied territories. Initially people in Berlin were able to move around freely between the districts, but with the Cold War, tensions started building up. In order to prevent East Germans from fleeing to West Germany. The border began to close up. From 1949 to 1961, about 2.5 million East Germans who risked being shot by Eas t Germany fled to West Berlin. Berlin Wall started just barbed wires in August 13, 1961. It was later replaced by a large number of real fences more than 155 kilometers long, about 3 to 4 meters high (Behind The Wall). After the construction was completed, a total of more than 5000 people successfully fled to West Berlin, 3000 people were arrested, and over 400 people were killed and injured (Leslie). 25 years ago, the new East German government began to plan to relax travel restrictions for East German people, but due to a misunderstanding of the then East German Politburo on superior orders, mistakenly announced Berlin Wall is about to open, resulting in tens of thousands of people took to the streets, the demolition of the wall, the whole of Germany into a state of extreme excitement. One of the Time reporter Ken Olsen recalled the day when he was in Germany says â€Å"They were screaming, Tor auf! Tor auf! Open the gate!† (Rothman) Although it was not the structure of walls collapsed, it had been removed by people. People climbed the Berlin Wall, removed graffiti, and took pieces of building materials as souvenirs. 11 months later, the two Germanies finally reunited. Tank Man, 1989 (See figure 5) Just several months before the Fall of Berlin Wall, in Tiananmen Square Beijing, China, a Tank man stood in front of type 59 tanks and attempted to block their way. He was pulled away by another man lright after. This thrilling scene happened to be caught by Jeff Widener (The Associated Press) in June 5, 1989 who was inside the Plaza Hotel next to the Tiananmen Square. He hid the negatives in the toilet water tank to avoid police forces’ search or the truth will not have spread around the world (Iyer). What triggered this event can be traced back to the Deng Xiaoping era. He was in power after 1979 and the implement reform and opened up policy on topic such as to industrialized, agriculture, national defense, science and technology, four modernizations. After a decade of reform, social and economic problems, such as a widening wealth gap and serious inflation; workers were dissatisfied because their salaries did not keep up with the pace of inflation, causing large flow of the rural population to the cities to make a living, leading to more homeless beggars and other social issues; official corruption, and other deep complaints. By the end of 1986, students at the University of Science and Technology of China in Hefei held anti-corruption protests. Then, Shanghai, Beijing and other cities have also lead to student protests, they asked the government to carry out democratic reforms. CPC (Communist Party of China) General Secretary Hu Yaobang was tough because of the absence of clearance, and he had been criticized and resigned from office in the following year the General Secretary (Lui). The spring of 1989, the international communist forces collapsed. Democratic movements began in Eastern Europe. Inspired by the movement, in late April 1989, students and Beijing residents’ protests gathered in Tiananmen Square. Since then, the whole country has undergone a similar student protest movement. On June 3 in the evening, the CPC decided to send troops to suppress, to disperse the crowd in and around Tiananmen Square, the army opened fire to the masses, and even tanks shot protesters. By 4 in the morning, the army controlled Square, people were forced to evacuate. The next day, after the first night of the crackdown, Tiananmen Square was cleared. All of the students who were in the movement for several months disappeared without a trace. Everything had been wiped out. The tanks in Tiananmen traveled quickly around, declaring military force. The photo of the â€Å"Tank Man† became a symbol of Tiananmen. It showed the courage of ordinary people fighting on beha lf of freedom. Unsung heroes raised up public concern of their human rights. Before then, people constantly live under fear of the iron fist. To summarize, thanks to the efforts of photographers, the future generation can see the 1980s was not only overwhelmed by national conflicts, politics, and unfortunate accidents, but was also a decade of new beginning. See how photos show the stories of the time. It is not about the photo itself such as how it was constructed, or what kind of the camera photographers used, but it is about the messages that those photos are trying to deliver. Sharbat Gula the Afghan girl’s frightened eyes revealed how it was when international communism was still powerful. Beloved President Reagan survived an attempted assassination, and became a god like figure in the 80s. Later, the Chernobyl Accident happened, and if there were not any photos documented, we would never know how intense it was when an unclear powerful plant melted function. At the end of the 80s, Berlin Wall fell down, and people in China stood up for freedom and human rights. Those two photos quickly became a symbol of free spirits. Visual images are so powerful that they could not only grab people’s attention, but also shout out message that words failed to present. I appreciate those brave photographers who were there at the first scene so we can look into what was going on in the past. Are we learn our lessons from history. 1980s might seem like a problematic period, but people survived to make it a better tomorrow.       Figure 1. McCurry, Steve. Afghan Girl. Digital image. Wikipedia. Wikipedia.com,  Dec. 1984. Web. 28 Nov. 2014. Figure 2. Reagan Assassination Attempt. Digital image. Wikipedia.  Wikipedia.com, 30 Mar. 1981. Web. 28 Nov. 2014. Figure 3. Soviet Authorities. Taken by  the Authorities in the immediate aftermath  of Chernobyl Disaster. Digital image. Wikipedia.  Wikipedia.com, Apr. 1986. Web. 28 Nov. 2014. Figure 4. AP. Fall of the Berlin Wall. Digital image.  The Telegraph. The Telegraph, Nov. 1989. Web. 28 Nov. 2014. Figure 5. Widener, Jeff. The Tank Man was trying to block the way of tanks  with his own body alone during the Tiananmen Square protests of 1989. Digital image. Wikipedia. Wikipedia.com, June 1989. Web. 30 Nov. 2014. Work Cited Behind The Wall. New Yorker 90.34 (2014): 31-1. Academic Search Complete. Web. 30 Nov.  2014. Braun, David. How They Found National Geographic’s â€Å"Afghan Girl. National Geographic.  07 Mar 2003. Web. 28 Oct. 2014. Brands, H. W. Reagan Reborn.American History48.3 (2013): 46-51.Academic Search  Complete. Web. 2 Dec. 2014. Chernobyl Accident 1986. Chernobyl. World Nuclear Association, 24 Nov. 2014. Web. 28  Nov. 2014. Denker, Debra. A Life Revealed: Along Afghanistans War-torn Frontier. National  Geographic. 167 (Jun 1985). 2002. Web. 30 Oct. 2014. Dibb, Paul. The Soviet Experience In Afghanistan: Lessons To Be Learned?. Australian  Journal Of International Affairs 64.5 (2010): 495-509. Academic Search Complete. Web. 1 Dec. 2014. Iyer, Pico. The Unknown Rebel. (Cover Story). Time 151.14 (1998): 192. Academic Search  Complete. Web. 4 Dec. 2014. Leslie, John. The Fall Of The Berlin Wall Twenty Years Later. New Zealand International  Review 34.5 (2009): 21-24. Academic Search Complete. Web. 4 Dec. 2014. Lui, Andrew. Looking Back At Tiananmen Square. Peace Review 12.1 (2000): 139-145.  Academic Search Complete. Web. 30 Nov. 2014. Raines, Howell. Reagan Wounded In Chest By Gunman; Outlook Good After 2-Hour Surgery;  Aide And 2 Guards Shot; Suspect Held. The New York Time Mar. 1981, Late City ed.: 1. Print. Rothman, Lily. Witness To History: Reporters Recall The Berlin Wall’S Fall. Time.Com  (2014): N.PAG. Academic Search Complete. Web. 30 Nov. 2014. United States. Office of the Historian. The Soviet Invasion of Afghanistan and the U.S.Response, 1978–1980. The Soviet Invasion of Afghanistan and the U.S. Response, 1978–1980. Office of the Historian, 31 Oct. 2013. Web. 28 Nov. 2014. United States. U.S.NRC. Backgrounder on Chernobyl Nuclear Power Plant Accident.  U.S.NRC. United States Nuclear Regulatory Commission, 25 Apr. 2014. Web. 28 Nov. 2014.

Saturday, January 18, 2020

Smart Card

A smartcard is a specific type of plastic card generally made of polyvinyl chloride based on polyesters or polycarbonate. It is the size of credit card. There is a 3by 5 mm imbedded chip in the card. Smart card contains either memory card or microprocessor that holds data and information. The microprocessor card can add, delete, and manipulate information on the card, while a memory-chip card (for example, pre-paid phone cards) can only undertake a pre-defined operation.Smart cards, unlike magnetic stripe cards, can carry all necessary functions and information on the card. Therefore, they do not require access to remote databases at the time of the transaction. A typical smartcard consists of an 8-bit microprocessor running at approximately 5 MHz with ROM, EEPROM and RAM, together with serial input and output, all in a single chip that is mounted on a plastic carrier. The operating system is typically stored in ROM, the CPU uses RAM as its working memory, and most of the data is sto red in EEPROM. Fig:-1 shows smart card. HistoryIn 1968 and 1969 German electrical engineers Helmut and Jurgen jointly developed automated chip card. Then after in 1974 French inventor Roland Moreno gives memory card concept called smart card. An important patent for smart cards with a microprocessor and memory as used today was filed by Jurgen Dethloff in 1976 and granted as USP 4105156 in 1978. The first mass use of the cards was as a telephone card for payment in French pay phones starting in 1983. Carte Bleue After the Telecarte microchips were integrated into all French Carte Bleue debit cards in 1992.Customers inserted the card into the merchant's POS terminal, then typed the PIN, before the transaction was accepted. Only very limited transactions (such as paying small highway tolls) are processed without a PIN. Smart-card-based electronic purse systems store funds on the card so that readers do not need network connectivity and entered service throughout Europe in the mid-1990 s. The major boom in smart card use came in the 1990s, with the introduction of smart-card-based SIMs used in GSM mobile phone equipment in Europe.With the ubiquity of mobile phones in Europe, smart cards have become very common. Development of contactless systems Contactless smart cards that do not require physical contact between card and reader are becoming increasingly popular for payment and ticketing applications such as mass transit and motorway tolls. Visa and MasterCard have agreed to an easy-to-implement version that was deployed in 2004–2006 in the USA. Most contactless fare collection implementations are custom and incompatible, though the MIFARE Standard card .Smart cards are also being introduced in personal identification at national and international levels. Citizen cards, drivers’ licenses, and patient card schemes are appearing. A smart card is a plastic card about the size of a credit card, with an embedded microchip that can be loaded with data, use d for telephone calling, electronic cash payments, and other applications, and then periodically refreshed for additional use. Currently or soon, you may be able to use a smart card to: Dial a connection on a mobile telephone and be charged on a per-call basis* Establish your identity when logging on to an Internet access provider or to an online bank * Pay for parking at parking meters or to get on subways, trains, or buses * Give hospitals or doctors personal data without filling out a form * Make small purchases at electronic stores on the Web (a kind of cybercash) * Buy gasoline at a gasoline station Over a billion smart cards are already in use. Currently, Europe is the region where they are most used. Ovum, a research firm, predicts that 2. billion smart cards will be shipped annually by 2003. Another study forecasts a $26. 5 billion market for recharging smart cards by 2005. Compaq and Hewlett-Packard are reportedly working on keyboards that include smart card slots that can be read like bank credit cards. The hardware for making the cards and the devices that can read them is currently made principally by Bull, Gemplus, and Schlumberger. How Smart Cards Work A smart card contains more information than a magnetic stripe card and it can be programmed for different applications.Some cards can contain programming and data to support multiple applications and some can be updated to add new applications after they are issued. Smart cards can be designed to be inserted into a slot and read by a special reader.. An industry standard interface between programming and PC hardware in a smart card has been defined by the PC Working Group, representing Microsoft, IBM and other interested companies. Like smart cards with contacts, contactless cards do not have an internal power source.Instead, they use an inductor to capture some of the incident radio-frequency interrogation signal, rectify it, and use it to power the card's electronics. Hybrids A hybrid smart card which clearly shows the antenna connected to the main chip Dual-interface cards implement contactless and contact interfaces on a single card with some shared storage and processing. An example is Porto's multi-application transport card, called Andante, which uses a chip with both contact and contactless interfaces . Applications First introduced in Europe nearly three decades ago, smart cards debuted as a stored value tool for payphones to reduce theft.As smart cards and other chip-based cards advanced, people found new ways to use them, including charge cards for credit purchases and for record keeping in place of paper. In the U. S. , consumers have been using chip cards for everything from visiting libraries to buying groceries to attending movies, firmly integrating them into our everyday lives. Several U. S. states have chip card programs in progress for government applications ranging from the Department of Motor Vehicles to Electronic Benefit Transfers (EBTs).Many industrie s have implemented the power of smart cards in their products, such as the GSM digital cellular phones as well as TV-satellite decoders. Why Smart Cards Smart cards improve the convenience and security of any transaction. They provide tamper-proof storage of user and account identity. Smart card systems have proven to be more reliable than other machine-readable cards, like magnetic stripe and barcode, with many studies showing card read life and reader life improvements demonstrating much lower cost of system maintenance. Smart cards also provide vital components of system security or the exchange of data throughout virtually any type of network.They protect against a full range of security threats, from careless storage of user passwords to sophisticated system hacks. The costs to manage password resets for an organization or enterprise are very high, thus making smart cards a cost-effective solution in these environments. Multifunction cards can also be used to manage network sys tem access and store value and other data. Worldwide, people are now using smart cards for a wide variety of daily tasks, which include: FinancialSmart cards serve as credit or ATM cards, fuel cards, mobile phone SIMs, authorization cards for pay television, household utility pre-payment cards, high-security identification and access-control cards, and public transport and public phone payment cards. Non-EMV cards work like magnetic stripe cards. This is a typical USA card technology (PayPass Magstripe and VISA MSD). The cards do not hold/maintain the account balance. All payment passes without a PIN, usually in off-line mode. The security of such a transaction is no greater than with a magnetic stripe card transaction.EMV cards have contact and contactless interfaces. They work as a normal EMV card via contact interface. Via contactless interface they work somewhat differently in that the card command sequence adopts contactless features such as low power and short transaction time . Identification A quickly growing application is in digital identification. In this application, the cards authenticate identity. The most common example employs public key infrastructure (PKI). The card stores an encrypted digital certificate issued from the PKI provider along with other relevant information.Contactless smart cards that can be read from within a wallet or even a garment simplify authentication; however, there is concern over criminals accessing data from these cards. Cryptographic smart cards are often used for single sign-on. Most advanced smart cards include specialized cryptographic hardware that uses algorithms such as RSA and DSA. Today's cryptographic smart cards generate key pairs on board, to avoid the risk from having more than one copy of the key (since by design there usually isn't a way to extract private keys from a smartThe first smart card river's license system in the world was implemented in 1987 in Turkey. Turkey had a high level of road accident s and decided to develop and use digital tachograph devices on heavy vehicles, instead of the existing mechanical ones, to reduce speed violations. Since 1987, the professional driver's licenses in Turkey are issued as smart cards and the driver is required to insert his driver's license into the digital tachograph before starting to drive. The tachograph unit records speed violations for each driver and gives a printed report. The driving hours for each driver is also being monitored and reported.In 1990 the European Union conducted a feasibility study through BEVAC Consulting Engineers, titled â€Å"Feasibility study with respect to a European electronic driver’s license (based on a smart-card) on behalf of Directorate General VII†. In this study, chapter seven is dedicated to the experience in Turkey, stating that the electronic driver's license application, in the form of smart cards, was first implemented in Turkey in 1987. Public transit Smart cards and integrate d ticketing have become widely used by public transit operators around the world. Card users may use their cards for other purposes than for transit, such as small purchases.Computer security The Mozilla Firefox web browser can use smart cards to store certificates for use in secure web browsing. Some disk encryption systems, such as TrueCrypt and Microsoft Windows 7 BitLocker, can use smart cards to securely hold encryption keys, and also to add another layer of encryption to critical parts of the secured disk. Smart cards are also used for single sign-on to log on to computers. Smart card support functionality has been added to Windows Live passports. Schools Smart cards are being provided to students at schools and colleges. Tracking student attendance * As an electronic purse, to pay for items at canteens, vending machines etc. * Tracking and monitoring food choices at the canteen, to help the student maintain a healthy diet* Tracking loans from the school library Healthcare Sma rt health cards can improve the security and privacy of patient information, provide a secure carrier for portable medical records, reduce health care fraud, support new processes for portable medical records, provide secure access to emergency medical information, enable compliance with government initiatives (e. g. organ donation) and mandates, and provide the platform to implement other applications as needed by the health care organization. Advantages The benefits of smart cards are directly related to the volume of information and applications that are programmed for use on a card. A single contact/contactless smart card can be programmed with multiple banking credentials, medical entitlement, driver’s license/public transport entitlement, loyalty programs and club memberships to name just a few. Multi-factor and proximity authentication can and has been embedded into smart cards to increase the security of all services on the card.For example, a smart card can be progra mmed to only allow a contactless transaction if it is also within range of another device like a uniquely paired mobile phone. This can significantly increase the security of the smart card. Individuals gain increased security and convenience when using smart cards designed for interoperability between services. For example, consumers only need to replace one card if their wallet is lost or stolen. Additionally, the data storage available on a card could contain medical information that is critical in an emergency should the card holder allow access to this.The first main advantage of smart cards is their flexibility. There is no need, for example, to carry several cards: one card can simultaneously be an ID, a credit card, a stored-value cash card, and a repository of personal information such as telephone numbers or medical history. Such a card can be easily replaced if lost, and, because a PIN number (or other form of security) must be used to access information, is totally usele ss to people other than its legal bearer. At the first attempt to use it illegally, the card would be deactivated by the card reader itself. The second main advantage is security.Smart cards can be electronic key rings, giving the bearer ability to access information and physical places without need for online connections. They are encryption devices, so that the user can encrypt and decrypt information without relying on unknown, and therefore potentially untrustworthy, appliances such as ATMs. Smart cards are very flexible in providing authentication at different level of the bearer and the counterpart. Finally, with the information about the user that smart cards can provide to the other parties, they are useful devices for customizing products andservices.Other general benefits of smart cards are: * Portability * Increasing data storage capacity * Reliability that is virtually unaffected by electrical and magnetic fields. Smart Cards andElectroniccommerce Smart cards are turning out to be a fundamental piece of the transformation of retailing into electronic commerce. The impressive growth of the Internet is making electronic shopping at least a real possibility, if not a habit, among computer users. However, the business model used in current electronic commerce applications still cannot enjoy the full potential of the electronic medium.Moreover, concerns about the reliability of an invisible counterpart and about the safety of the Internet for credit card information increase the wariness and thereby limit the use of the electronic shopping on the part of customers. Of the estimated 360 billion payments that took place in the United States in 1995, approximately 300 billion could not have taken place using the existing electronic media. Such transactions involved micro-payments p; i. e. payments for less than $10 p; which are virtually outside of the electronic arena for lack of a payment method compatible with such low amounts.Credit cards or checks are simply too expensive to use for micro-payments, and the e-cash currently being experimented on the World Wide Web does not seem to have the characteristics to appeal to shoppers. For this reason, smart cards could be a fundamental building block of widespread use of electronic commerce, since they are an instrument to pay at a low cost for transactions involving small amountsofmoney. Another big advantage of smart cards for electronic commerce is their use for the customization of services.It is already possible to purchase tailored services on the World Wide Web p; MyYahoo and FireFly are well known examples. However, in order for the service supplier to deliver the customized service, the user has to provide each supplier with her profile p; a boring and time consuming activity. A smart card can contain a non-encrypted profile of the bearer, so that the user can get customized services even without previous contacts with the supplier. Finally, smart cards are a key technology ena bler for financial institutions.The processing power, the portability and the interactive properties of smart cards will constitute the basis for a revolution in the relationship between consumers and banks. PC-based home banking and phone banking will give way to card banking: a phone equipped with a smart card reader will be all that is needed for any kind of transaction. A smart card is a plastic card with a small, built in microcomputer chip and integrated circuit that can store and process a lot of data. It is considered to be a secure, time saving device that can access information without use of a PC or the Internet.However, smart cards have both Flexibility * Smart cards have a lot of flexibility. They can store multiple types of information including identification, credit cards, business and family contacts. Cost and Availability * Smart card readers are expensive to produce. These readers are not available in all locations and may have compatibility issues due to the diff erences of each smart card brand. Adafruit Raspberry Pi Starter Kit Now available in India ProtoCentral Security * Smart cards are individually encrypted and can only be accessed by pin number.However, there is concern about privacy and whether or not information on the card could be accessed or used illegally by the government or other third-party sources. Data Integrity * Information on a smart card cannot be erased or removed accidentally by any electrical or magnetic means. Smart Card Uses * Smart cards are useful for setting limits on expenses, customizing customer loyalty programs and accessing critical health care information. Smart cards save users from having to remember multiple usernames and passwords. DisadvantagesThe plastic card in which the chip is embedded is fairly flexible, and the larger the chip, the higher the probability that normal use could damage it. Cards are often carried in wallets or pockets, a harsh environment for a chip. However, for large banking sys tems, failure-management costs can be more than offset by fraud reduction. Client-side identification and authentication cards are the most secure way for e. g. , internet banking applications, but security is never 100% sure. If the account holder's computer hosts malware, the security model may be broken.Malware can override the communication (both input via keyboard and output via application screen) between the user and the application. Rabobank (â€Å"random reader†) in the Netherlands combine a smart card with an unconnected card reader to avoid this problem. The customer enters a challenge received from the bank's website, a PIN and the transaction amount into the reader, The reader returns an 8-digit signature. This signature is manually entered into the personal computer and verified by the bank, preventing malware from changing the transaction amount. Another problem is the lack of standards for functionality and security.

Friday, January 10, 2020

Gossip, Lies and Descriptive Essay Samples for High School

Gossip, Lies and Descriptive Essay Samples for High School When you're varying between several points, it's great to find out what other men and women consider the issue. Most folks receive their very first love in high school. Unfortunately, it's also when folks experience their very first breakups and it's devastating. Even very smart students may face an issue facing a need to make an effective written work. If your instructor asks you to spell out your favourite food, make certain that you jot down some ideas before you start describing it. The absolute most peaceful spot for you 84. The huge pothole on Elm Street that my mother was able to hit each and every day on the best way to school would be filled-in. Be seeking high school. What to Expect From Descriptive Essay Samples for High School? Possessing a very clear and structured plan is the foundation for any excellent bit of writing, and a college essay is not any different. You have to find the most suitable r esources for your essay in addition to patience when finding the proper inspiration to write. In general, in both educational institutions, to turn into a better writer you must practice a good deal. Our writers try their very best to think of interesting suggestions and share them with you. Perhaps you're not even certain how it differs from the other kinds of essays, and even if you're, maybe you don't find out how to start writing it. Among the most well-known forms of essays it is very important to grasp how to write one. Narrative essays are grouped under nonfiction and is founded on experience. Like any different type of essay, descriptive essays comes in a variety of formats. Essay writing comes in various forms. When you may read a descriptive essay sample, you are able to learn from the very best. Furthermore, you are able to also take a look at our Argumentative Essay templates. Work on the thesis statement as soon as you choose the topic. The next narrative essay examples are able to help you begin writing your very own narrative essay. If you're tasked with writing a descriptive essay there are lots of things which you can write about. The trick to writing a great effectiveA essay is to get the passion to write it. An excellent descriptive paragraph is similar to a window into another world. Samples supply you with a chance to secure closer to the style and structure that's usually appreciated by tutors. To create the reading of samples more effective, you have to understand what things to remember! Knowing the amount of pages will help you pick a perfect subject issue. The New Angle On Descriptive Essay Samples for High School Just Released Normally, most readers receive the best representation of something through using their senses! A person which you have great respect for 4. Whether or not you require descriptive writing examples of an ind ividual, place, or emotion you require a great example to follow. Thus, prior to a person could change the outside, he's got to change the inside. To distinguish between the types of essays is only a matter of identifying the author's objective. Make a list of the significant points or qualities that you will concentrate on in your essay. The bulk of the essay utilizes standard English and English grammar. A quick sentence is utilised to make the emotional resolution of the admission essay. By this time, you probably get the concept that the style choice for your descriptive essay is really open. You have to grab their attention and the best method to do this is by writing in your voice. The excess detail really helps us visualize the scene that the author is attempting to create. So that the objective is not just to tell an entertaining tale but in addition show the main reason for the story and the significance of the experience. Where to Find Descriptive Essay Sample s for High School It is essential to list the particular characteristics of the tornado there are lots of them. Within the body section, you should give supporting arguments for every single point that you earn. By viewing some excellent descriptive essay examples, it's possible to choose the thing or event you desire to discuss. Generally the toughest aspect of developing a descriptive essay is picking the topic. The principal aim of a descriptive essay is to allow the reading audience understand and visualize the particular thing by improving the overall understanding of the topic. The secondary objective is to leave an immense impression on the reader. In such writing you should use vivid language to describe ordinary things, and that means you will need to discover more literary terms to be successful in descriptive writing. High school essay writing is a frequent classroom activity and is also part of several normal examinations. Students find paper writing time-consuming, it doesn't matter the kind of the paper college or higher school essay. Descriptive writing is easy and tough at the exact time, especially if you're a freshman.

Wednesday, January 1, 2020

What is Community Organizing

Question: What is Community Organizing? Answer: Community organizing is a process by which a group of people organizes and takes measures to influence the policies or culture surrounding them. The term is usually, but not always, used to refer to local community organizing.Examples of community organizers might include: Public school parents who organize to demand a high-quality education for their children.Neighbors who organize to address potholes in the road and other infrastructure issues.Laid-off factory workers who organize to protest the shipping of jobs overseas. The protests against British law that led to the American Revolution.The 1963 March on Washington for Jobs and Freedom, which is credited to a great extent with passage of the Civil Rights Act of 1964.The Day Without Immigrants rallies of May 1st, 2006, which contributed to the defeat of the draconian HR 4437 immigration reform proposal.