Saturday, November 30, 2019
Precision World Wide Case Study Essay Example
Precision World Wide Case Study Essay Precision World Wide Inc. wants to determine whether they should introduce a new Japanese prototype to their steel ring. This new ring which is made out of plastic is tougher and less costly to produce. By producing these plastic rings, Precision worldwide would go out of business if some form of action is not taken. One big issue is the level of steel rings that they currently have in their inventory. These rings cannot be sold for any value including scrap. The reason for having so much inventory is the result of having to order the highly specialized steel in large amounts so that a mill would be willing to handle the order. As far as this issue, Thorborg needs to realize that the cost of the steel rings in inventory is a sunk cost. With sunk costs, the cost becomes irrelevant because it cannot vary with the decision to produce plastic rings. A lot of times, managers are too scared or not willing to give up on a decision because they have invested so much into it. They need evaluate the decision based on what is a better more profitable product to produce regardless of what was already a sunk cost. Thorborg, also needs to properly handle the inventory and be very strategic in the way he sells the steel rings considering that he will have 15,100 finished rings would be left on hand by mid-September when the plastic rings roll out. Thorborg would be better off if he sold as many steel rings as possible prior to the production of the plastic rings. One strategy he can implement would be to price discriminate and sell to low value consumers at a discounted rate which will increase sales of the steel rings. He can talk to Henk which is the sales manager to come up with drastic price reductions and reduce steel ring inventory. Once all inventory is exhausted, produce all plastic rings. Another strategy would be to sell steel rings until the plastic rings are ready for the market, then sell the steel rings at a discount and sell plastic rings at the same time. We will write a custom essay sample on Precision World Wide Case Study specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Precision World Wide Case Study specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Precision World Wide Case Study specifically for you FOR ONLY $16.38 $13.9/page Hire Writer With this option, you must emphasize to the market that plastic rings are tougher which reflects on the price. You can also just sell steel rings and do not consider selling plastic rings at all. This option does not prepare the company for long term financial success because the profit margins are a lot higher for plastic rings. Also, you can just produce plastic rings and scrap all of you inventory. This option would not consider the opportunity cost of the excess steel rings inventory.
Tuesday, November 26, 2019
Pachycephalosaurs - The Bone-Headed Dinosaurs
Pachycephalosaurs - The Bone-Headed Dinosaurs Pachycephalosaurs (Greek for thick-headed lizards) were an unusually small family of dinosaurs with an unusually high entertainment value. As you can guess from their name, these two-legged herbivores were distinguished by their skulls, which ranged from the mildly thick (in early genera like Wannanosaurus) to the truly dense (in later genera like Stegoceras). Some later pachycephalosaurs sported almost a foot of solid, albeit slightly porous, bone on top of their heads! (See a gallery of bone-headed dinosaur pictures and profiles.) However, its important to understand that big heads, in this case, didnt translate into equally big brains. Pachycephalosaurs were about as bright as the other plant-eating dinosaurs of the late Cretaceous period (which is a polite way of saying not very); their closest relatives, the ceratopsians, or horned, frilled dinosaurs, werent exactly natures A students, either. So of all the possible reasons pachycephalosaurs evolved such thick skulls, protecting their extra-big brains certainly wasnt one of them. Pachycephalosaur Evolution Based on the available fossil evidence, paleontologists believe that the very first pachycephalosaurssuch as Wannanosaurus and Goyocephalearose in Asia about 85 million years ago, only 20 million years before the dinosaurs went extinct. As is the case with most progenitor species, these early bone-headed dinosaurs were fairly small, with only slightly thickened skulls, and they may have roamed in herds as protection against hungry raptors and tyrannosaurs. Pachycephalosaur evolution really seems to have taken off when these early genera crossed the land bridge that (back during the late Cretaceous period) connected Eurasia and North America. The largest boneheads with the thickest skullsStegoceras, Stygimoloch and Sphaerotholusall roamed the woodlands of western North America, as did Dracorex hogwartsia, the only dinosaur ever to be named after the Harry Potter books. By the way, its especially difficult for experts to untangle the details of pachycephalosaur evolution, for the simple reason that so few complete fossil specimens have ever been discovered. As you might expect, these thick-skulled dinosaurs tend to be represented in the geological record mainly by their heads, their less-robust vertebrae, femurs and other bones having long since been scattered to the winds. Pachycephalosaur Behavior and Lifestyles Now we get to the million-dollar question: why did pachycephalosaurs have such thick skulls? Most paleontologists believe male boneheads head-butted each other for dominance in the herd and the right to mate with females, a behavior that can be seen in (for example) modern-day bighorn sheep. Some enterprising researchers have even conducted computer simulations, showing that two moderately sized pachycephalosaurs could ram each others noggins at high speed and live to tell the tale. Not everyone is convinced, though. Some people insist that high-speed head-butting would have produced too many casualties, and speculate that pachycephalosaurs instead used their heads to butt the flanks of competitors within the herd (or even smaller predators). However, it does seem odd that nature would evolve extra-thick skulls for this purpose, since non-pachycephalosaur dinosaurs could easily (and safely) butt each others flanks with their normal, non-thickened skulls. (The recent discovery of Texacephale, a small North American pachycephalosaur with shock-absorbing grooves on either side of its skull, lends some support to the head-butting-for-dominance theory.) By the way, the evolutionary relationships among different genera of pachycephalosaurs are still being sorted out, as are the growth stages of these strange dinosaurs. According to new research, its likely that two supposedly separate pachycephalosaur generaStygimoloch and Dracorexin fact represent earlier growth stages of the much bigger Pachycephalosaurus. If the skulls of these dinosaurs changed shape as they aged, that may mean that additional genera have been classified improperly, and were in fact species (or individuals) of existing dinosaurs.
Friday, November 22, 2019
Hear, Hear!
Hear, Hear! Hear, Hear! Hear, Hear! By Maeve Maddox Dave Moloney has asked for a post on the pernicious misuse of the term hear hear as†¦Here here. Ive tried to find examples of the misspelling here, here on the web, but without much success. I did find a CD with the title Here, Here, and Here. If youve ever watched a session of the House of Commons on television, youll have heard shouts of Hear, hear! These are shouts of approval. The shouters are expressing agreement with whatever a speaker has said. For example, the Daily Mail (Online) describes the response to a remark by David Cameron that the previous administration had broken the nations covenant with [the British] armed forces: The moment he spoke this line the hall erupted in defiant shouts of hear hear and, from one man near me, bloody right. The phrase is a contraction of Hear him, Hear him, meaning listen to what the mans saying. According to some commentators, it is sometimes used ironically. Caitlyn Jenner, you are a normal woman right now, today. You dont need a man to make you a woman. Hear, hear! We reached out to Thomas, who contacted us about the Facebook meme, to tell him it was a fake. He said it just goes to show, â€Å"Everything you read on Facebook isn’t the gospel truth written in stone by Moses. You need to check your sources.†Hear, hear! Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Expressions category, check our popular posts, or choose a related post below:Comparative Forms of Adjectives75 Idioms and Expressions That Include â€Å"Break†10 Tips to Improve Your Writing Skills
Wednesday, November 20, 2019
Argumentation Research Paper Example | Topics and Well Written Essays - 1750 words
Argumentation - Research Paper Example casualties while maximizing destruction and death abroad. That Obama was elected through the use of Dr. Martin Luther King Jr., Mahatma Gandhi, and Jesus Christ in his moral rhetoric makes the use of violent force in government policy problematic. For example, if we are to ask whether these teachers accept the use of deadly force and violence as a means to solve political problems or social issues, the answer would be an unequivocal no – not in any instance. It can be further argued that by invoking MLK, Gandhi, his Christian faith, and his unique family history, the President communicated a point of view to the electorate that was expressive of his moral sense of identity. If Obama as President continues to pursue what the Washington Times describes as â€Å"neoconservative policies†through military action abroad, he is indeed going against the moral tone that he communicated to his base in seeking election and should be held accountable in the upcoming 2012 election for it. The Washington Times (2011) writes in the editorial: â€Å"Mr. ... For now anyway. Mr. Obama’s motive - trying to dislodge an authoritarian regime in the name of the Libyan people - are solidly within the neoconservative framework.†(Washington Times, 2011) The article is limited in space but could have clearly noted that Obama has pursued the â€Å"Just War†doctrine through his policy of escalation in Afghanistan and Pakistan while drawing down in Iraq, and Libya is the latest example of that policy. President Obama’s 2009 Nobel Peace Prize acceptance speech can be seen as one of the main locations where he develops the â€Å"Just War†doctrine and with it his reasons why he cannot or will not implement a purely pacifist foreign policy as advocated by Gandhi and MLK particularly. (NYT, 2009) What the Washington Times suggests is that at heart Obama is no different that Nixon or Eisenhower, who like the majority of Americans would â€Å"believe in†Christianity and not see it as inconsistent with war. Yet, t he Washington Times is not writing the editorial to advocate the position of MLK and Gandhi in politics, they are writing to exult with glee as Obama again sells these principles out and the â€Å"moral Left†writhes in agony. The implication of this tone is happier still in that the writers expect that Obama will likely lose the election, having sold out his moral base continually throughout his administration. Following the Washington Times arguments, it is easy to view the Obama administration’s economic policies as no real change from the neo-conservative Bush administration. President Obama continued the Wall St.â€Å"bailout†policies enacted by the Bush administration as well as expanding them. President Obama’s majority-led Congress extended the Bush tax cuts in another example of neo-conservative policy.
Tuesday, November 19, 2019
Human Relationships in Todays Culture Essay Example | Topics and Well Written Essays - 1750 words
Human Relationships in Todays Culture - Essay Example The first part of the article from a man’s perspective for a male audience starts off with the claim that a man’s ego stands in the way of successful resolution to many conflicts, including conflicts that arise from poor communication (Mitchell). Typical â€Å"male†forces force men to pursue an often-destructive path toward â€Å"being right†, which creates problems in relationships. For that reason, the author claims that men are worse at relationship-based communication, but not much worse than women. As a result, the author recommends first to make time for each other. That includes taking the time to sit together, cook together, travel together, and to eat together and being open and honest about the things that trouble the relationship while reassuring that the overall relationship is strong. Another piece of advice is to be an active listener, which includes having patience, concentration, and modesty. It is easy to get distracted while other people (not just women or a relationship partner) are talking. Modesty is also important because it allows others to take the floor in a discussion, which gets back to the author’s original assertion that a man’s ego often gets in the way of productive communication between relationship partners. Men are also advised to focus on nonverbal forms of communication, including body language indicative of negative emotions. Men, on the advice of the columnist, must overcome their natural insensitivity to serve as a true emotional partner.
Saturday, November 16, 2019
Fundamental Principle of Arbitration Essay Example for Free
Fundamental Principle of Arbitration Essay In other word, arbitration is the outcome of a private agreement between parties to settle their disputes from the courts, and submit it to the decision of a private tribunal. If the principle of privacy is breached, the arbitration will be effected. The second principle is confidentiality. It is when that all takes place at arbitration is confidential. Either party or tribunal cannot disclose to third person without the consent of the other except for the purpose of the proper conduct of the arbitration. However, there is a question regarding to these two principles which is whether privacy automatically results in confidentiality or does it automatically demand confidentiality. There are two main areas of confidentiality which are confidentiality prior to award and confidentiality after award. According to English law, there are two opinions regarding with this issue. First, if it was absence of an express term in an arbitration clause providing for confidentiality, the presumption of confidentiality will applies. Second, the general duty of confidentiality cannot be implied in a silent clause for arbitration in an agreement. However, this opinion has been criticized since it is a break with the general principle of confidentiality. In Malaysia, there is no doubt that privacy and confidentiality are regarded as essential features for the parties to the arbitration. An arbitrator in breach of the confidentiality requirements would be exposed to misconduct proceedings. Finally, the duty of confidentiality is not absolute and was subject to limited qualifications or exceptions such as consent, compulsion of law, disclosure by leave of the court or disclosure necessary for the purpose necessary of protecting the interest of an arbitrating party.
Thursday, November 14, 2019
College Laziness or Stupidity? The Internet Versus The Library as a Res
What makes the Internet so appealing? Whether it exists to have every answer to every problem or that the Internet provides its users with a virtual reality to be whomever they so choose, the Internet can be regarded as something that has advanced the human race into a new age while others see the Internet as an infernal contraption that has ruined society. Despite the Internet’s useful features, the uses among average college students have corrupted the idea of the Internet being a place to gain intellectual knowledge and has turned them into lazy, good for nothing halfwits. The standards most college students live by (in terms of using the Internet daily) is not enough to get them through four or more years of college. This can be stated with the utmost accuracy because to succeed at the highest level in college one must learn to use the library as a resource. The Internet makes up one of the most heavily used appliances that every college student literally depends upon. From streaming videos to surfing the web, it can be effortless to simply type just a few words into the search bar and hit enter, thereby eliminating hours of mindless work that (let’s face it) nobody likes doing. What should be called for is that many teachers across the nation should enforce a policy that restricts students from using the Internet as a primary source. The fact that many students are prepared to cut hours of work that can help them in the future is something that needs to change, and the only way it can is if teachers require students to use the library to look up and use books as a primary source when searching for information on projects One of the many reasons that I dislike the use of the Internet being a prominent part in the life of ... ... "Good Things about the Internet." Today's Parent 08 2004: 151-2. ProQuest. Web. 28 Feb. 2014. Steinberg, Jacques. "Free College Notes on Web: Aid to Learning, Or Laziness?" New York Times, Late Edition (East Coast) ed.: 0. Sep 09 1999. ProQuest. Web. 28 Apr. 2014. Apr. 2014. Thompson, Christen. "Information Illiterate Or Lazy: How College Students use the Web for Research." Portal: Libraries and the Academy 3.2 (2003): 259-68. ProQuest. Web. 28 Thurmond, Bradley H. "Student Plagiarism and the use of a Plagiarism Detection Tool by Community College Faculty." ProQuest. Web. 28 Apr. 2014. Wang, Yu-Mei. "Internet Uses in University Courses." International Journal on E-Learning 6.2 (2007): 279-92. ProQuest. Web. 4 Mar. 2014. Wegner, Daniel M., and Adrian F. Ward. "How Google is Changing Your Brain." Scientific American 12 2013: 58. ProQuest. Web. 5 Mar. 2014.
Monday, November 11, 2019
Effects of Mercury Contaminated Fish on Consumer’s Health Essay
Mercury is an element that comes naturally in nature, or manufactured by humans. It comes in different forms. According to the New Jersey Department of Health, mercury may be found as metallic mercury, a kind of silver-gray liquid that is harmful when exposed into the air and breathed in; methylmercury, which may be ingested by eating fish; inorganic mercury which can be found in over-the-counter drugs, batteries, and other pharmaceuticals, and is harmful when breathed in or swallowed; and phenylmercury in household products like paints, cosmetics and toiletries and is harmful when breathed in, swallowed or passed through the skin (Kapsch, et. al, 1999).            This paper delves into the mercury and its harmful effects on the fish population and ultimately, adverse effects on human health. Mercury in the Environment            As noted above, mercury is found naturally in the environment.  Paul Kapsch, Matt Landi and Sarah Scwartz writes that natural incidents and accidents like forest fires and volcanic eruptions spew mercury into the air (1999).            The Natural Resource Defense Council adds that power plants and certain chemicals manufacturers, as well as other industrial facilities release mercury into the air through their daily operations. The released mercury eventually ends up in the waterways and oceans. Fish in these ecosystems ingest the mercury, which people, in turn ingest by eating the fish. (NRDC, 2006).            Mercury is also present in many things that one has at home like fluorescent and neon lamps, mercury switches in chest freezes, thermostat probes, thermometers, barometers and other gauges, laboratory solutions and even dental amalgam (Kapsch, et. al, 1999).            Paul Kapsch and his partners outlined the environmental impact of mercury. Citing ExtoxNet (1999), Kapsch, et. al, stated that while mercury enters the environment, concentrations in the air and atmosphere is generally very low. Mercury, however, is deposited into forest ecosystems where it accumulates in highly toxic forms. Eventually it leads up to aquatic ecosystems, which in some cases contribute to human health problems.            The Natural Resource Defense Council added that when mercury enters into the various water systems, bacteria take it in and convert it into a type of methyl mercury, which is easily absorbed by humans (1999). The NRDC also explained that the mercury then â€Å"works it way up the food chain†as larger fish eat smaller contaminated fish. Mercury, however, does not break down. Instead it accumulates in fish (1999).            To illustrate the point, the NRDC stated that predatory fishes like sharks and mackerel have been found to have 10,000 times higher mercury concentration (1999). How Mercury Enters the Body            Mercury can enter the body by breathing it in, swallowing or eating contaminated food, drinking contaminated water , or through the skin (Agency for Toxic Substances and Disease Registry, 2008).            Consumption of contaminated fish, however, is one of the most dangerous way of getting mercury in the body since it involves methylmercury, which is easily absorbed through the gastrointestinal tract into a person’s bloodstream (Agency for Toxic Substances and Disease Registry, 2008).            In 2003, Dr. Jane Hightower, doctor of internal medicine at the California Pacific Medical Center in San Francisco, found that 89% of participating patients had high mercury levels. Most of these participants had as much as four times the safe level of mercury in their blood stream. Participants in Dr. Hightower’s study were chosen precisely because of their fish-heavy diets. (NRDC, 2006).            Once in the bloodstream, the mercury goes into various parts of the body. Methylmercury in pregnant women gets passed on into the child’s blood stream and then into the child’s brain. A nursing mother may pass the methylmercury through breast milk. (Agency for Toxic Substances and Disease Registry, 2008). Health Risks            The NRDC says that mercury exposure can be particularly hazardous for pregnant women and small children.  The NRDC adds that mercury exposure can lead to cerebral palsy, mental retardation, blindness and deafness in infants and fetuses. Even with a minimal exposure, the child may be delayed in learning how to walk and talk, have low attention span and may later on develop learning disabilities (NRDC, 2006).            And the numbers are alarming. In July 2005, researchers at the federal Centers for Disease Control and Prevention found that 1 in 17 women of childbearing age have more than 5.8 micrograms of mercury per liter of blood. The CDC stated that this level may pose a risk to the developing child (NRDC, 2006).            Mercury-contaminated fish is not just dangerous for children and pregnant women but it is also dangerous for adults (Mercola.Com, 2003). Mercola.Com related that mercury destroys the nerve tissues, the visual cortex and the cerebellum. It affects complex movements and balance. It also leads to problems in attention span and language. It also decreases concentration, deftness and verbal memory in adults. (Mercola.Com, 2003).            For some adults, mercury poisoning can lead to fertility problems and blood pressure regulation problems. It also causes memory loss, vision loss, numbness in the fingers and toes, and tremors. It is suspected that mercury exposure also leads to heart disease (NRDC, 2006).            The Agency for Toxic Substances and Disease Registry warned that the nervous system is prone to mercury contamination. The Agency said that in this type of mercury poisoning, some people who consumed seed grains and fish contaminated with large amounts of methyl mercury developed severe brain and kidneys damage.  The Agency explains that mercury accumulates in the kidneys, so it damages it more. (Agency for Toxic Substances and Disease Registry, 2008).  * * *            The above discussion shows that consumption of mercury contaminated fish is very dangerous for consumer’s health, and is a source of different diseases especially in (but not limited to) children and pregnant women. Studies have concluded that mercury poisoning have caused several conditions and diseases from simple memory loss, loss of concentration, fertility problems to something as grave and irreparable as mental retardation and kidney ailments. And studies on the relationship between mercury and other, more life-threatening diseases like heart ailments are currently underway. The growing body of evidence all points to some disease that can be traced to mercury poisoning.            Consumers have to actively control their fish diets. If they are fond of eating fish, they might find it useful to regularly check and look for advisories regarding mercury contamination in their area. It is also recommended that they regularly check their own mercury levels and if they found their mercury levels higher they have to consult with their doctors immediately.            Since mercury poisoning is more dangerous to pregnant women and small children, it might be best to veer away from eating fish altogether, and take up healthier choices such as vegetables and dairy products. Being more vigilant with regards to one’s diet can reap long-term prevention that would help ensure optimum health.            Authorities need to take much stronger steps to protect a far greater portion of people. Authorities must examine their antiquated safeguards designed to protect an average person from an average amount of methyl mercury in fish and take more protective and realistic actions against exposure to methyl mercury through food. Authorities need to constantly update themselves, as â€Å"safe levels†of mercury in the diet are constantly changing. In fact, the trend is that the required safe levels are getting higher with each new research that goes out of the pipeline.            Public health authorities, as well as community leaders, or any health-related organization, must come together to inform, educate and empower the public about the dangers of fish consumption, mercury contamination, and adverse health effects. Information is the best weapon against mercury contamination, without it, no amount of public policy will be sufficient or effective. The public needs to be aware of what mercury does to the body, the diseases associated with it, where mercury could be found, how it gets into your body, what measures are to be done.            More than anything, it is high time to look at more efficient ways of disposing all types of mercury. Since mercury could be found in nature, it will be next to impossible to eradicate it. What one could hope for is to reduce environmental damage from the mercury that we can control. If people could somehow take care and reduce the amount of mercury that goes into the environment as waste, people would be protecting not only the oceans and the fish, but also themselves. Taking care of the environment would ensure sustainability in the future and would drastically decrease mercury–and in fact and principle–all types of contamination.            In effect, stopping or greatly reducing mercury contamination and all the ill effects associated with it takes the effort of everybody in the community, but it starts mainly with your self.    References Agency for Toxic Substances and Disease Registry (Content source); Sidney Draggan and Emily Monosson (Topic Editors). 2008. â€Å"Public Health Statement for Mercury.†In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth November 13, 2007; Last revised January 24, 2008; Retrieved April 2, 2008]. Jeremy Laurence, (8 March, 2007) Fish Contaminated With Mercury ‘Pose Worldwide Threat to Health. The Independent. Retrieved on 3 April 2008. Kapsch, Paul, Landi, Matt and Schwartz Sarah. (1999). Mercury. University of Vermont. Retrieved on 3 April 2008. Learn About Mercury and Its Effects, (2006) Natural Resource Defense Council. Retrieved on 23rd March 2008. Mercury-Contaminated Fish Poses Health Risks to Adults, (2003) Mercola.com. Retrieved on 25th March, 2008.  Â
Saturday, November 9, 2019
Parity Generator
PARITY GENERATOR Vinti Thakkar Swetha Jain Riddhi Vira TE : B-3 TE : B-3 TE : B-3 Roll no : 0812103 Roll no : 0812106 Roll no : 0812114 Email : vinti. thakkar Email : shweta. mjain Email : riddhi1312 @gmail. com [email protected] com @gmail. com AbstractSecurity is a prime concern in our day-today life. Everyone wants to be as much secure as possible. An access control for doors forms a vital link in a security chain. The microcontroller based digital lock for Doors is an access control system that allows only authorized persons to access a restricted area. The system is fully controlled by the 8 bit microcontroller AT89C2051 which has a 2Kbytes of ROM for the program memory. The password is stored in the EPROM so that we can change it at any time. The system has a Keypad by which the password can be entered through it. When the entered password equals with the password stored in the memory then the relay gets on and so that the door is opened. If we entered a wrong password for more than three times then the Alarm is switched on. 1. Introductionâ€Å"Password Based Door Security System using Microcontroller†is used in the places where we need more security. It can also used to secure lockers and other protective doors. The system comprises a number keypad and the keypads are connected to the 8 bit microcontroller AT89C2051. This is one of the popular Microcontroller. It has only 20 pins and there are 15 input/output lines. The microcontroller has a program memory of 2 Kilobytes. The microcontroller continuously monitor the keypad and if somebody enters the password it will check the entered password with the password which was stored in the memory and if it they are same then the microcontroller will switch on the corresponding device. The system will allow the person who knows the password and it will not allow who don’t know the password and the system will also show the persons who try to break the protection barrier. 3. Circuit Diagram ExplanationThe Main Part of the above Circuit diagrams is the Microcontroller AT89C2051. The Keypad was the input device and it was connected in a matrix format so that the numbers of ports needed are reduced. The Microcontroller reads a four-digit password through the Keypad. Then the Microcontroller compares the four digit password with the number which is preprogrammed and if it is equal then the Microcontroller will switch on the motor for the door and if we enter the wrong password for more than three times then an alarm will be switched on until a right password was pressed through the Keypad. The Password was stored in the EEPROM and the password can be changed at any time using the same keypad. To change the password dial 1234 –Old password- New Password. The power supply section is the important one. It should deliver constant output regulated power supply for successful working of the project. A 0-12V/500 mA transformer is used for our purpose the primary of this transformer is connected in to main supply through on/off switch& fuse for protecting from overload and short circuit protection. The secondary is connected to the diodes convert from 12V AC to 12V DC voltage. Which is further regulated to +5v, by using IC 78054. Component Details1) Resistor :Resistor is a component that resists the flow of direct or alternating electric circuit. Resistors can limit or divide the current, reduce the voltage, protect an electric circuit, or provide large amounts of heat or light. An electric current is the movement of charged particles called electrons from one region to another. Resistors are usually placed in electric circuits. Physicists explain the flow of current through a material, such as a resistor, by comparing it to water flowing through a pipe. Resistors are designed to have a specific value of resistance. Resistors used in electric circuits are cylindrical. They are often color coded by three or four color bands that indicate the specific value of resistance. Resistors obey ohm’s law, which states that the current density is directly proportional to the electric field when the temperature is constant. ) Integrated Circuits :Timer IC (555) -The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator, the free running frequency and duty cycle are accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output circuit can source or sink up to 200mA or drive TTL circuits. Regulator IC (LM 7805) -The LM7805 monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1. 0A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents. Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply. EEPROM (AT24C02) -The AT24C02 provides 2048 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as 256words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The AT24C02 is available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP, 5-lead SOT23 (AT24C02) and 8-lead TSSOP packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 2. 7V (2. 7V to 5. 5V) and 1. 8V (1. 8V to 5. 5V) versions. heck till all keys releasedK2:ACALL DEALAY ;call 20 msec delayMOV A,KEYS;see if any key is pressedANL A,#11100000B ;mask unused bitsCJNE A,#11100000B,OVER;key pressed, await closureSJMP K2OVER:ACALL DEALAYMOV A,KEYSANL A,#11100000BCJNE A,#11100000B,OVER1SJMP K2OVER1:MOV A,KEYSORL A,#11111110BMOV KEYS,ACLR ROW1MOV A,KEYSANL A,#11100000BCJNE A,#11100000B,ROW_1MOV A,KEYSORL A,#11111110BMOV KEYS,ACLR ROW2MOV A,KE YSANL A,#11100000BCJNE A,#11100000B,ROW_2MOV A,KEYSORL A,#11111110BMOV KEYS,ACLR ROW3MOV A,KEYSANL A,#11100000BCJNE A,#11100000B,ROW_3MOV A,KEYSORL A,#11111110BMOV KEYS,ACLR ROW4MOV A,KEYSANL A,#11100000BCJNE A,#11100000B,ROW_4LJMP K2ROW_1:RLC AJC MAT1MOV KEY,#01HAJMP K1MAT1:RLC AK1:CJNE R3,#01H,G1INC R3MOV N1,KEYAJMP KEYBOARDG1:CJNE R3,#02H,G2INC R3MOV N2,KEYAJMP KEYBOARDG2:CJNE R3,#03H,G3INC R3MOV N3,KEYAJMP KEYBOARDG3:CJNE R3,#04H,G4MOV R3,#01HMOV N4,KEYG4:MOV A,N1SWAP AORL A,N2MOV N2,A;HIGHER DIGITSS IN N2MOV A,N3SWAP AORL A,N4MOV N4,A;LOWER DISITS IN N4MOV A,N2CJNE A,#12H, BV1MOV A,N4CJNE A,#79H,BV1CPL L1CLR ALRMMOV COUNT,#00HAJMP KEYBOARDBV1:MOV A,N2CJNE A,#12H, BV2MOV A,N4CJNE A,#71H,BV2CPL L2CLR ALRMMOV COUNT,#00HAJMP KEYBOARDBV2:INC COUNTMOV A,COUNTCJNE A,#03H,HH1SETB ALRMMOV COUNT,#00H HH1:AJMP KEYBOARD;((((((((((((((((((((((((((((((((8. AcknowledgmentsWe wish to express our profound thanks to the people around us who helped make this project a reality. Firstly, we would like to thank Ms. Vidya Daund for mentoring this project, right from the selection of the topic to its completion. Also, we would like to thank the laboratory assistants Bhakti Ma’am and Kiran Sir who have been constantly there for us whenever we were in need and helped us in whatever ways possible. We would also like to thank all those who have contributed towards the development of our project| 2. Flowchart2) Capacitor :Capacitor or electric condenser is a device for storing an electric charge. The simplest form of capacitor consists of two metal plates separated by a non touching layer called the dielectric. When one plate is charged with electricity from a direct current or electrostatic source, the other plate have induced in it a charge of the opposite sign; that is, positive if the original charge is negative and negative if the original charge is positive. The electrical size of the capacitor is its capacitance. Capacitors are limited in the amount of electric charge they can absorb; they can conduct direct current for only instances but function well as conductors in alternating current circuits. Fixed capacity and variable capacity capacitors are used in conjunction with coils as resonant circuits in radios and other electronic equipment. Capacitors are produced in a wide variety of forms. Air, Mica, Ceramics, Paper, Oil, and Vacuums are used as dielectrics depending on the purpose for which the device is intended. 3) Transistor :Transistor is a device which transforms current flow from low resistance path to high resistance path. It is capable of performing many functions of the vacuum tube in electronic circuits, the transistor is the solid state device consisting of a tiny piece of semi conducting material, usually germanium or silicon, to which three or more electrical connections are made. ) Diode :Diode is a electronic device that allows the passage of current in only one direction. The first such devices were vacuum-tube diodes, consisting of an evacuated glass or steel envelope containing two electrodes – a cathode and an anode. The diodes commonly used in ele ctronic circuits are semiconductor diodes. There are different diodes used in electronic circuits such as Junction diode, Zener diode, Photo diodes, and tunnel diode. Junction diodes consist of junction of two different kinds of semiconductor material. 5. Program (Code) :-include REG_51. PDF KEYSEQUP1ROW1EQUP1. 4ROW2EQUP1. 3ROW3EQUP1. 2ROW4EQUP1. 1COL1EQUP1. 5COL2EQUP1. 6COL3EQUP1. 7L1EQUP3. 1;3. 7L2EQUP3. 0ALRMEQUP3. DSEGORG 20HKEY:DS1N1:DS1N2:DS1N3:DS1N4:DS1COUNT:DS1CSEGORG 0000HSETB L1SETB L2CLR ALRMMOV R3,#01HMOV COUNT,#00HKEYBOARD:MOV KEY,#00HSETB COL1SETB COL2SETB COL3K11:CLR ROW1CLR ROW2CLR ROW3CLR ROW4MOV A,KEYSANL A,#11100000BCJNE A,#11100000B,K11;JC MAT2MOV KEY,#02HAJMP K1MAT2:RLC AJC K1MOV KEY,#03HAJMP K1ROW_2:RLC AJC MAT3MOV KEY,#04HAJMP K1MAT3:RLC AJC MAT4MOV KEY,#05HAJMP K1MAT4:RLC AJC K1MOV KEY,#06HAJMP K1ROW_3:RLC AJC MAT5MOV KEY,#07HAJMP K1MAT5:RLC AJC MAT6MOV KEY,#08HAJMP K1MAT6:RLC AJC K1MOV KEY,#09HAJMP K1ROW_4:RLC AJC MAT7MOV KEY,#0AHMOV COUNT,#00HMOV R3,#01HAJM P KEYBOARDMAT7:RLC AJC MAT8MOV KEY,#0BH;for 0AJMP K1MAT8:RLC AJC K1MOV KEY,#0CHDELAY:MOV R1,#50REPP2:NOPDJNZ R1,REPP2RET;((((((((((((((((((((((((((((((((END6. Conclusion7. ApplicationOur electronic door lock performed as expected. We were able to implement all of the functions specified in our proposal. The biggest hurdle we had to overcome with this project was interfacing the micro controller with the hardware components. We feel that this electronic door lock is very marketable because it is easy to use, comparatively inexpensive due to low power consumption, and highly reliable. This door lock is therefore particularly useful in applications such as hotel room door locks, residential housing, and even office buildings.. 9. References 1) Microchip, AT89C2051 Data Sheet, Microchip Technology Inc. , 2003 2) Arrick Robotics, â€Å"Driving High-Power Loads with a Microprocessor,†2005,
Thursday, November 7, 2019
Iceland Fire and Ice Essay
Iceland Fire and Ice Essay Iceland: Fire and Ice Essay Iceland, an Island just below the Arctic Circle is located between Europe and North America in the North Atlantic Ocean. The Island was first discovered by Nordic and Irish people in the 9th Century, discovering that the Island had offered a wealth of natural wonders. The landscape is characterized by wide glaciers, active volcanoes, fjords, waterfalls and numerous geothermic springs and geysers making Iceland one of the most geographically active areas in the world. Iceland has an area of 103,000 square kilometers with a population of approximately 320,000 people. Being beneath the Arctic Circle and given the name â€Å"Iceland†gives the wrong impression of its name because Iceland does not only consist of ice but, also has some of the most volatile volcanoes in the world. Iceland is known as â€Å"The land of fire and ice†for various reasons; most importantly, because many of the active volcanoes are uniformly covered by glaciers and ice. Due to Iceland's location, the mid-arctic ridge on a divergent tectonic plate boundary has a high concentration of active volcanoes. Iceland sits on both sides of the ridge, which is the entire part of the ridge system. This ridge has a 10,000-mile crack on the ocean floor which was caused by the separation of North American and Eurasian tectonic plates (Iceland.IS). When plates meet, they rub against each other while they slide to opposite sides. Sometimes, they move away from each other causing the release of pressure which exposes the lava sea between the two. The exposing of the lava allows the lava to stream to the surface where it cools down and forms new lands. This is called constructive junction. Twenty-million years-ago the island did not even exist (para 2.). Iceland is one of the frequent islands shaken by earth tremors. Since the settlement of Iceland in AD 874, thirteen volcanoes have erupted out of the 30 active volcanic systems. Every 5 years, Iceland experiences major volcanic events. In 1784 and 1896, large areas of southern Iceland had been devastated by the worst earthquakes (Iceland.Is). A third of the lava that has canvased over the earth’s surface has erupted in Iceland since the middle ages. Fortunately, because of the massive volcanic activities that occur, the geological activity that creates the volcanoes gives an endless supply of geothermal energy. Iceland has one of the cheapest and cleanest forms of energy in existence; over 90% of housing in Iceland is heated by the natural geothermal heat. The melt water created by the sub-glacial volcanoes provides Iceland with a great potential source of hydroelectric power. Also, hot springs can be found almost everywhere. Therefore, Iceland is the least polluted country du e to all the clean energy. Iceland may have been created by the landing of the volcanoes, but the ice is what shapes them today. Glaciers cover approximately 10 % of Iceland. Geologists believe that the entire island was buried beneath miles of ice just less than 8,000-years ago. As the glaciers melted away, they have carved Iceland’s miraculous steep-sided valleys, fjords, and long narrow glacial valley’s that have been flooded by the sea. Today, the ice continues to smooth and carve the land of Iceland. One day, Iceland’s newest volcanoes blew through the ice delivering smoke and ash into the arctic air thousands of feet high, while millions of gallons of water from melted ice made its way down the hill giving the grand production of nature. This was the ultimate combination of fire and ice (InterKnowledge Corporation, 2005). Today, the Island has places that look like they belong to another world. The active volcanoes regularly erupt adding more lava and ash to the landscape; while these eruptions occur, sometimes the spit of lava and ash turn into spectacular and dangerous geologic fireworks. The ashes from the volcanoes are
Tuesday, November 5, 2019
Aging and Disability Worksheet Essay Example for Free (#5)
Aging and Disability Worksheet Essay ? Answer the following questions in 100 to 200 words each. Provide citations for all the sources you use. †¢ What is ageism? How does ageism influence the presence of diversity in society? Ageism is defined as prejudice and discrimination against old people. Schafer writes that for the ageist, elderly persons reflect the image of disease, death, and dying as well as a reminder that we all be old one day (2012,pp. 395-396). Another stereotype of the elderly is that they are slow and mentally dysfunctional. All of this is further emphasized by society’s fixation with youth. †¢ What is the Age Discrimination in Employment Act (ADEA)? How does the ADEA address issues for the aging population? The Americans with Disability Act is a law that prohibits discrimination based on disability and only disability. It is somewhat similar to the Civil Rights Act of 1964. Our textbook defines this law as â€Å"In many respects, this law is the most sweeping antidiscrimination leg- isolation since the 1964 Civil Rights Act. The ADA went into effect in 1992, covering people with a disability, defined as a condition that â€Å"substantially limits†a â€Å"major life activity†such as walking or seeing. It prohibits bias in employment, transportation, public accommodations, and telecommunication against people with disabilities†(Schaefer, 2012). The ADA addresses issues for the aging population by how our text book stated â€Å"basically, we can see it taking a civil-rights view of disabilities that seeks to humanize the way society sees and t reats people with disabilities†(Schaefer, 2012). Which is by not discriminating them. †¢ What is being done to address the issues you identified? There are senior citizen centers that have been working to provide activities to bring the elderly together for social interaction. Most elderly look to family as their main source of support system. Many of these elderly try to stay living as close to their children have been known to live with their parents during this time to provide the best care to their aging parents. Retirement is an issue that some employers try to help by letting employers â€Å"step down†so that they may retain some of their benefits from still being employed. The media has started depicting some more of the elderly to be active people that are as bright as young people as opposed to times when they made old people appear to be shriveled and wrinkled up people that cannot do much at their age. †¢ Is the number of aging population expected to rise in numbers or decrease? The world population has experienced continuous growth since the end of the Great Famine and the Black Death in 1350, when it stood at around 370 million. The growth rate peaked at 2.2% in 1963, and had declined to 1.1% by 2011. Current projections show a continued increase in population (but a steady decline in the population growth rate). †¢ What types of legislation may or may not be affected by the aging population? In the midterm, anti-age discrimination legislation, better health and a statutory rise in the retirement age to manage the cost of the state pension bill will see more older people working for longer, whether they want to or not (see changes to retirement and pensions). This will decrease the number of old but active volunteers. In the long term, especially as baby boomers become the older old, there will be a rise in demand for health services and long term care, possibly combined with constrained public spending, creating a challenge for the funding of public services and pensions and increasing pressure on families and friends to support retirees. †¢ How does poverty affect the aging population? Poverty affects the aging population by them not being able to afford medical insurances and many other expenses such as housing. An increase in the numbers of older people at 80 plus, will mean more with complex needs. The baby boomers are more assertive, put more emphasis on lifestyles, and do not consider themselves old. Answer the following questions in 100 to 200 words each. Provide citations for all the sources you use. †¢ What does the ADA provide for people with disabilities? The ADA makes it illegal to discriminate based on disability in several different areas in life. It prohibits discrimination on the basis of disability in: employment, services rendered by state and local governments, places of public accommodation, transportation, telecommunications services. Under the ADA, accommodative services for these disabilities are usually the same as those offered to people with physical, psychological, sensory and cognitive disabilities. †¢ How have people with disabilities been treated in the past? People in the past treated people with disabilities as if they were a disease themselves. In some countries people with disabilities would be murdered to lessen the burden and â€Å"ease their pain†but as time progressed people started to treat them as if they were a lost kitten, and have become more affectionate towards us or them. †¢ How has the attitude toward people with disabilities changed over time? The disabled were placed in institutions (by the government) and were often forgotten about thus forcing them to live in unsafe/ unsanitary conditions. In conditions that would be construed as â€Å"animal cruelty†if a kettle owner made their animals live in those very same conditions the disabled were forced to live in. Many were abused, neglected, and murdered either by family members or at the hands of institution workers. The word â€Å"retarded†was used to describe everyone with a disability, regardless of the type of disability or the severity. While discrimination toward the disability is still rampant and the government shows little interest in eliminating disability discrimination. †¢ What are some unique circumstances or issues encountered by people with disabilities? When I was younger I remember going into stores that still had those turning things, gosh what are they called? They were made of metal and you had to turn them and go through them in order to get into the store. I would see how that was a huge issue for the people in wheelchairs or many other disabilities. Aging and Disability Worksheet. (2016, Oct 22).
Saturday, November 2, 2019
Personal Science Overview Essay Example | Topics and Well Written Essays - 750 words
Personal Science Overview - Essay Example Science has different meanings to it and is vast. Keeping it general and not making it very complex, the things we observe with our ears relates to science; science describes how sound waves strike your eardrum and then the process gets complex. Science describes it all, and if there are answers to our everyday questions, science stands the only capable subject to fulfill the blank answer spaces. A conceptual subject always helps on attaining success and going high as compared to other relatively easier subjects that seem to be nice for the short span of time but have limited advantages in the future compared to the vast advantages of conceptual subjects like Science. When we talk about studying this subject, it opens a wide horizon for various different aspects and opportunities that we can avail due to the knowledge gifted to us as a result of this subject. Such an important subject obviously needs to be given greater importance and hence making that possible would require one to s pare more, even extra if needed, time in order to attain success in life. For a student with the inclination of opting for this essential subject, he/she should spare extra time working for it. At an initial level, the presence of ATLEAST two classes a day related to science would be essential for the student to develop the basic ideas and concept for his/her future to follow. One learns with experience. Teaching is an experience that grows with practice and a teacher always grasps the maximum knowledge only with due course of time, as then the teacher can come up with new ideas and extra knowledge for him/her to pass on to the young generation. Science is a subject that's related to our everyday life, and a master in this subject is given a high moral and ethical regard in the society. A person teaching science would consider himself/herself lucky to have been given this privilege or opportunity to learn more about the subject and not only be selfish enough to keep the knowledge just within himself/herself. Similarly like everyone else, same would be the case with me; I would feel privileged and take the opportunity to gain more knowledge about this amazing factual subject and to pass it on to my fellow beings. Pre-service courses are designed to provide initial teacher education to school leavers and others without tertiary qualifications in education who wish to qualify for appointment to the teaching service. These courses were certainly of great help to me to teach science, because of these courses my analytical mind became stronger and it became easier for me to understand the concepts of science myself and then to explain it to my fellow beings. These courses gave me an initial start to my teaching career in science. In today's modern world, as the use of science and technology is increasing at a massive rate it becomes more essential to include science in our everyday life more than mathematics reading or writing. The simplest of the tasks performed by us rely on the efficiency of science. Getting into too much detail would make the subject complex and difficult for a normal being to understand, but keeping it general the answer is transparent, science stands the subject capable of handling and answering more questions of everyday life than compared to mathematics readi
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