Compare & Contrast essay about technologies essays

Compare & Contrast essay about technologies essays Email, Cell phones, Internet, Television, Pagers, and Computers is the way of the future, or is it now trademarks of everyday life? Today in 2002 peoples lives seem so interconnected with the ways that technology has been able to bridge the gap in communications. Fifty years ago, you had limited options, sending mail from the post office (which today has been labeled "snail mail") or calling them. We now have a wide variety of communication devices accessible to us so that we are never out of touch. Multimedia, Television, and internet bring into our homes images of violence, sex, ideals, and everything that is out there in the world. One of the current issues that has been approached is "Is there to much information accessible to us?" Since we are overwhelmed with so much information, scenes of sex, violence, and also by ways of communication, we are slowly loosing the sensors of right and wrong, everything is becoming almost like a video game. Compared to fifty years ago, America today is facing a whole new set of problems that was not even a consideration or a thought of Americans of yesteryear. Morals, communication, societys beliefs, trends, value of life, and even workplace environments are worlds apart from our past, and all this within a short span of time. We do not reflect the utopia that people from 1952 may have imagined for us with flying cars, ray guns, and life in space. We are a generation caught up in the world of high speed information and instant everything, even instant life (cloning and genetic research). The world of communication is so egregious; we dont know what to do. From email, to computers, to chat rooms; its how people meet and interact with each other now. These so called Internet cafes" how does this affect people? Are people more open today about meeting people than they were 50 yea ...

What You Need to Know About Registering for the GRE

What You Need to Know About Registering for the GRE Prometric, the company that administers the GRE General Test, works hard to ensure you can take the test at a time thats convenient for you. Unlike the SAT, ACT or MCAT, there are no standardized national testing dates set in stone for the computer-based GRE. The testing times vary from city to city and country to country, so completing your GRE registration is a little more complicated. These GRE registration details are standard, though, so make sure you read and understand what you have to do. GRE Registration Facts First, take a dive into the  GRE fee information  before you get started, so you know exactly how much this bad boy is going to set you back. If youre taking the computer-based GRE, you  can register online, by phone (call 1-800-GRE-CALL) or by mail. If youre taking the  the paper-based GRE, then your options are to register by mail or online. You cant register online if you need a fee reduction, testing accommodations, Monday testing, or standby testing, so check into those if you have special circumstances. If you do complete your registration online,  youll receive immediate confirmation as well as an email confirmation. You can search by country, state, and city to find a testing location nearest to you and you  can also search within a three-month time frame to find a testing appointment time that would work for you and your busy schedule. Unlike the LSAT, there are many options both during the week and on the weekends to take the test so finding a time that works is pretty easy. As the GRE testing appointments are four hours long, you should take that into consideration if youre fitting this in around important dates.   GRE Registration Options You  are allowed to take the GRE a number of times, but there are some rules. You cannot take the GRE more than five times in any 12-month (not calendar year) period. And those administrations must be 21 days apart at the minimum. You may not exceed this number for any reason, even if you have chosen to cancel your GRE score   Acceptable ID for the GRE When you register for the test, youll be asked to provide an acceptable form of identification such as a passport with name, photo, and signature, drivers license with name, photo, and signature or military identification with name photo and signature. (Other forms of ID are acceptable, too, based on your country). Pay attention to the information on your ID when registering. Your registration entry must match your ID card exactly when you show up to test (except for accents), or you will not be allowed to sit for the exam. If you have questions because of your unique name, then check out the information from ETS regarding registering under those circumstances. Complete Your GRE Registration Ready to get started? Before you register, make sure you understand the test youre actually taking. Learn more about the  Revised GRE, along with details for the  GRE Verbal Reasoning Section  and the  GRE Quantitative Reasoning Section. Then, jump to the ETS website and complete your GRE registration today.

Management guru profile Essay Example | Topics and Well Written Essays - 1000 words

Management guru profile - Essay Example The most unique ability of this management guru was to look at any given system or factory operations and give suggestions on how both the quality of the end product and the efficiency of the work could be improved. In fact, as one of the leading lights of the industrial age, he recognized that the people responsible for the management of a company have to cooperate with and consider the problems faced by the labor (Boddy, 2002). Taylor made it clear that without efficient planning or recognizing the problems of the workers, no management system could increase profitability. According to the system devised by Taylor, productivity could be improved if the right person was found for doing the right job and that the person was to be given increasing rewards for increased performance. His systems and thoughts got popular enough in his own lifetime that he became the first recognized management consultant. He helped several businesses increase productivity while reducing labor costs to the extent that work which was previously done by hundreds of workers could be done with a few dozen (Nelson, 1980). His most famous work, The Principles of Scientific Management was written to describe a system which could be easily applied to many different companies at the time. Its usefulness is still accepted today since his ideas about improving both the lives of the workers and the performance of a company continue to remain important considerations for management personnel. The modern fields of organizational psychology, organizational behavior and the scientific analysis of management techniques owe a lot to Taylor (Nelson, 1980). In conclusion, the values given by Fredrick Taylor can be summarized as a making a logical analysis, improving the production quality, reduced spending, better living conditions for workers, giving workers smart goals/feedback, supporting the

Economics of the UAE Research Paper Example | Topics and Well Written Essays - 2000 words

Economics of the UAE - Research Paper Example km†¦..population of three million inhabitants in 2000† (202). However, out of the total population of the UAE, over half are non-nationals. With the discovery of oil, the economy of the United Arab Emirates was transformed from an unreliable economy that relied on agriculture, pearling, and fishing, to a high income economy based mainly on oil production. Although there were challenges and opportunities that came with the transformation of the United Arab Emirates economy, its government has succeed in utilizing the opportunities and confronting challenges. President Sheikh Khalifa Bin Zayed Al Nahyan of the United Arab Emirates is working hard to maintain the economic progress that was established by the nation’s first president (Al-Abed, Hellyer, and Vine 71). The first president of the UAE established an economic reform and liberalization programme, which was high approved by principal international bodies. According to Al-Abed, Hellyer, and Vine, due to the development of the UAE oil sector, and growth in other sectors of the nation’s economy, there is continued advancement in the real Gross Domestic Product growth of the UAE (71). Liberal economic policies have helped in maintaining sustained economic growth in the UAE, and the UAE government continues to focus on these policies for future sustained growth. Apart from the oil industry, the UAE government has continued to pay attention to the shipping, tourism, media, financial and commercial services, industries, and the manufacturing sectors of the UAE economy that have contributed to economic growth in the emirates. The economic development of the United Arab Emirates began in the 1970’s. In 1989, the real GDP growth was 11%, standing at 33.7 billion US dollars (Federal Research Division 74). In 1991, crude oil production increased, consequently increasing oil and gas exports. The level of imports for

Chemistry of Anti-money Counterfeiting Technology Essay Example for Free

Chemistry of Anti-money Counterfeiting Technology Essay I. Abstract Counterfeiting money is a big business for criminals. Nearly $70 million of fake currency gets used daily, costing consumers millions. In the present day, there are many new technologies that have been discovered and studied in order to help put counterfeiters out of business. Our currency is something that we must protect, which is why these technologies and discoveries are very important in the safety and development of our economy. The new generation of Philippine banknotes includes new and more advanced technology to ensure the safety of the genuine Philippine banknotes. This is to prevent money counterfeiting in our country. These new features include more advanced photo editing, which features micro printing on the different images and texts on the banknotes, a unique rough texture, a new system of serial numbering, advanced security fibers and security threads, watermark technology, and optically variable ink. These are the most advanced and efficient methods of preventing money counterfeiting today. Provided in this paper is a detailed explanation and description of each security precaution and a detailed review of the methods used to execute them. II. Denominations of Currency The new generation Philippine banknotes composes of the denominations twenty, fifty, one hundred, two hundred, five hundred, and one thousand peso bills. The new twenty-piso bill honors President Manuel L. Quezon, the first President of the Republic of the Philippines on the front of the bill while the reverse shows the image of the breathtaking Banaue Rice Teraces and the Palm Civet from the Cordilleras. The fifty-piso bill commemorates President Sergio Osmeà ±a who led our country at the critical stage of World War II. The reverse shows an image of the Taal Lake, one of the world’s smallest active volcanoes and the Maliputo Fish. The one hundred-piso bill pays tribute to President Manuel Roxas who prioritized the crafting of the Central Bank charter then provided the leadership for the reconstruction of our country after the devastation of the Second World War. On the reverse, the near perfect cone-shaped Mayon Volcano and the Butanding or Whale Shark is also featured. The two hundred-piso bill features President Diosdado Macapagal who restored the celebration of Philippine independence on June 12. The reverse features the unique icon of Bohol, the Chocolate Hills and the Tarsier. The five hundred-piso bill is a salute to the champions of Philippine democracy, Senator Benigno Aquino Jr. and President Corazon Aquino. The reverse features the Puerto Princesa Subterranean River National Park. Finally, the one thousand-piso bill features three of our war heroes, Chief Justice Jose Abad Santos, Josefa Llanes Escoda, and General Vicente P. Lim. The reverse features the Tubbataha Reefs National Marine Park and the world famous South Sea Pearl. Figure 1 The money denominations come in specific color schemes of orange for the twenty-piso bill, red for the fifty-piso bill, violet for the one hundred-piso bill, green for the two hundred-piso bill, yellow for the five hundred-piso bill, and blue for the one thousand-piso bill. III. Security Features The Philippine Banknote or the Philippine Peso Bill finds the need to be current with the use of new technology to enhance the security of banknotes to remain impossible to replicate by criminals. The new generation Philippine banknotes incorporates the latest available technology in banknote security. This is the reason that they have developed new designs and upgraded the security features of all our banknotes. A. Photo Editing The Central bank of the Philippines uses a special photo editing software to ensure specific prints that are impossible to copy by criminals. Some of these specifications include nano prints on the images, lines, and words on the banknotes. B. Texture The note is not smooth to the touch, but a bit rough. This is because the bank notes are made of 80% cotton and 20% Philippine Abaca. Aside from that, the raised prints that are embossing from the Intaglio printing process give the bill a unique tactile feel. Intaglio printing is a printing technique in which the image is incised into a surface. Normally, copper (Cu) or zinc (Zn) are used, and the incisions are created by etching ot engraving the image. In printing, the surface is covered in ink and then rubbed vigourously with tartalan cloth or newspaper to remove ink from the surface, leaving it in theincisions. The very sharp printing obtained from the intaglio process is hard to imitate by other means. Intaglio also allows for the creation of latent images, which are only visible when the document is viewed at a very shallow angle. Figure 2 C. Serial Numbers The serial numbers are composed of one or two prefix letters and six to seven digits in asymmetric or increasing size. Serial numbers are not difficult to forge; yet they make banknotes easier to track and audit. Figure 3 D. Security Fibers The paper used to print our currency has tiny threads of fibers embedded into the paper. These red and blue fibers glow under ultraviolet light. If the bill has no red and blue fibers that glow, then it is probably a fake bill. Fluorescent marks are the invisible phosphor dyes on banknotes that glow under UV or blacklight. This glow will be visible under a money detector device. There are two kinds of security fibers. The first one is the visible security fibers. These are easily seen in current Philippine banknotes as the blue and red fibers that are randomly spread throughout the front and back of the paper. The other kind is the invisible security fiber. These glow a fluorescent yellow under ultraviolet light. Genuine security fibers in Philippine banknotes can be easily plucked out (yes, try it!) with the aid of a needle. Counterfeit money usually only prints the fibers on paper, thus they cannot be plucked out. Figure 4 E. Watermarks The watermark shows a shadowed image of the portrait and the banknotes’ denomination on the blank space when viewed against the light from either side of the bill. This is possible due to paper density variations. Figure 5 The word â€Å"Pilipino†, written in our ancient Filipino alphabet, Baybayin, can be seen in its complete form when the banknote is viewed against the light. F. Concealed Value When the banknote is rotated at a 45-degree angle and tilted downwards, we can see the concealed denominational value super imposed on the smaller version of the portrait. Figure 7 G. Security Threads Both the twenty-piso and the fifty-piso have a 2mm wide security thread that can be visible when viewed against the light. The one hundred, two hundred, five hundred, and one thousand-piso bills have a 4mm wide stich-like security thread embedded on the bill and when viewed from different angles, its color changes from red to green. The embedded security thread is a special thread vertically implanted off center of the note during the manufacture of the banknote paper. The front of the thread carries a clear text – the initials of the Bangko Sentral ng Pilipinas (BSP) and the numeric denomination of the bank note. The back of the thread is also printed with the initials BSP. There are two kinds of security threads. One is a thin aluminum (Al) coated and partly demutualized polyester film thread with microprinting, which is embedded in the security paper as banknote or passport paper. The other kind of security thread is the single or multicolor sewing thread made from cotton or synthetic fibers, mostly UV fluorescent, for the bookbinding of passport booklets. Figure 8 H. Optically Variable Device Patch The five hundred-piso bill and the one thousand-piso bill have the optically variable device patch, a reflective foil. For the five hundred-piso bill, it reveals the small BSP (Bangko Sentral ng Pilipinas) logo and the blue parrot, while the one thousand-piso bill reveals the small BSP logo and the South Sea Pearl inside a clam. The patches change color from red to green when the note is rotated 90-degrees. Figure 9 I. Optically Variable Ink A security feature exclusive to the one thousand-piso note is the optically variable ink for the embossed denomination value on the lower right corner on the face of the banknote, which changes color from green to blue when it is viewed in different angles. Color changing inks are inks containing pearlescent pigments that change color when viewed at a different angle. The color of the ink does not actually change, but the angle of the light to the viewers eye changes and thus creates the change in color. A number of types are available, including green to purple, gold to green and green to lilac. Optically variable inks (OVI) are very expensive inks applied on banknotes as a security feature. So far, only the 1000 peso bills have this. There are two versions of OVI printing on the 1000 peso banknotes. This is an excellent security feature because counterfeiters will need a lot of effort and money to replicate it. They are called optically variable inks because tiny flakes of color-shifting film are incorporated in the intaglio ink. Thus, prints of OVI change color when viewed from different angles.

The Uplifting Tale of Today Will Be a Quiet Day Essay -- Today Will Be

The Uplifting Tale of Today Will Be a Quiet Day  Ã‚        Ã‚   Some readers see death, but when I read the story "Today Will Be a Quiet Day" by Amy Hempel, I find it to be a light hearted, first-hand account of people coping with transition. Even its location in the table of contents under the heading "Childhood and Adolescent" (Barnet), implies that the story is not about death at all. A newly defined family, one man, a boy and a girl, is faced with the aftermath of divorce and explore among themselves the intricacies of life. The story gives us sublime but keen insight into the transition and adjustments these three people make in this story. The children’s transition is marked by a rivalry, one that surfaces early on in the story and is portrayed through delightful banter and retorts. The children’s bantering relieves some stress created by the unknown tiny steps they are taking in establishing a new type of relationship with their father in the absence of their mother. At no time do the children’s harmless antics towards one another escalate as indicated by critic Tara Baker when she explains that their arguments become deeper than the usual childish bickering. Baker seems to believe the children’s digs into one another are being fueled by difficult situations they have had to deal with lately (170). Brian Motzenbecker supports my idea that the parents are divorced but finds symbolism in what the children discuss and the father’s "quips" (174). I can suggest to the contrary that these stories within the story are meaningful but not symbolic at all. The rapid succession of jumping from one topic to the next suggests to me that the need for conversation without a break is necessary. It keeps everyone from simultaneously t... ...d happily due to the father being able to encompass the entire day’s events into his affirmation. The natural resilience his children display is admirable and probably has much to do with how he and their mother raised them. They show a type of frustration that is both contained and civilized. They avoid expressing their emotions too much throughout the story. Their lives are continuing, and at this point I’m sure the children know that even their father is going to be "all right." Work Cited Baker, Tara. "Is Today Really Quiet?" Ode To Friendship Ed. Connie Bellamy. Virginia Beach: Gann Designs, 1997. Hemple, Amy. "Today Will Be a Quiet Day." Harper Anthology of Fiction. Ed. Sylvan Barnet. New York: HarperCollins, 1991. Motzenbecker, Brian. "Does It Spell Disaster?" Ode To Friendship. Ed. Connie Bellamy. Virginia Beach: Gann Designs, 1997.      

Experimental Molar Enthalpy of Neutralization for Sodium Hydroxide Solution Essay

1. For information regarding the problem, prediction, materials and procedure, please see attached Measurements Table for Molar Enthalpy of Neutralization for Sodium Hydroxide Solution Substance Instrument Used Measurement Sodium hydroxide 100mL graduated cylinder ( ±0.2mL) 50.0mL Sulfuric acid 100mL graduated cylinder ( ±0.2mL) 30.0mL Temperature of sodium hydroxide solution Thermometer ( ±0.2ËC) 26.0ËC Temperature of the sulfuric acid Thermometer ( ±0.2ËC) 24.0ËC Final temperature reached by solution Thermometer ( ±0.2ËC) 34.5ËC Initial and Final Temperatures of Solutions Temperature of sodium hydroxide solution ( ±0.2ËC) 26.0ËC Temperature of the sulfuric acid ( ±0.2ËC) 24.0ËC Final temperature reached by solution ( ±0.2ËC) 34.5ËC Neutralization Reaction Taking Place Pre-Lab Calculations – Volume of Sulfuric Acid Needed Average Initial Temperature of Solutions Calculation Experimental Molar Enthalpy of Neutralization for Sodium Hydroxide Solution Calculation Solution 1. The experimental molar enthalpy of neutralization for sodium hydroxide solution was found to be -64 ±3.3KJ/mol. Calculation of Uncertainties 34.5 ±0.2ËC – 25.0 ±0.2ËC =9.5 ±0.2ËC 50 ±0.2mL + 30 ±0.2mL =80 ±0.2mL 9.5  ± 0.4ËC = 4.210†¦% 80  ± 0.4mL = 0.5% 50  ± 0.2mL = 0.4% =5.11†¦% =5.1% Percent Difference Conclusion Through a pre-lab calculation the amount of sulfuric acid solution needed was found to be 30.0m ±0.2mL. Using this information, a calorimetric lab was conducted to find the molar enthalpy of neutralization for the sodium hydroxide solution. Through molar enthalpy calculations, the experimental molar enthalpy of neutralization for the sodium hydroxide solution was found to be -64.0 ±3.3KJ/mol; however, the theoretical (actual) molar enthalpy of neutralization for the sodium hydroxide solution is -57KJ/mol. In other words the experimental enthalpy change was -64.0 ±3.3KJ and the theoretical (actual) enthalpy change was -57KJ. This as a result produced a 12% difference. The various errors will be analyzed in the evaluation. Evaluation As discussed earlier in the conclusion, the experimental change in enthalpy is greater than the theoretical (actual) change in enthalpy. This result is quite rare. In general, a typical result for the experimental enthalpy change should yield an outcome lower than the theoretical (actual) value (the reason for this will be discussed later in the conclusion); however, this was not the case in this lab. There are a variety of reasons why the experimental enthalpy change for this lab was greater than the theoretical (actual) enthalpy change. In general, the main reason for the result seen in this lab is due to the nature of the calorimeter. Due to the fact the calorimeter is an isolated environment there is no possible method to determine when the reaction is complete. As a result, the reaction may have been occurring in a concentrated area. With an increased concentration of reactants in one area, the rate of the reaction increases along with the temperature in the concentrated area. When this heat transfers to the thermometer, it causes an increased change in enthalpy. Normally, the concentration of reactants would be less, as they are not in a concentrated area. This would then cause a lower temperature increase because there is a smaller chance the particles will collide. As a result, the change in enthalpy in a normal situation would be much lower than if the reactants were all concentrated in one area. In saying that, it is possible within this lab the reactants were concentrated in one area causing the experimental change in enthalpy to be quite large. Because it is impossible to see into the calorimeter to see if the reaction is concentrated or when the reaction is complete the reactants could easily have been concentrated in one area. Furthermore, by not knowing when the reaction is complete, the temperature might be measured too soon or too late causing inaccurate results. In general, because the calorimeter is an isolated environment it results in the experiment having many errors because how the reaction is occurring and when the reaction is finished is unknown. A way to eliminate this error is by inserting an electronic stirring rod to stir the reactants so they do not become concentrated in one area. Furthermore, another reason contributing to the large enthalpy change is the impurity of the substances used. As a result, because the substances are impure, they could have had a higher concentration of reactants. With a higher concentration of reactants, the reaction rate will increase and there will be a greater reaction than wanted. With a larger reaction at an increased rate, the final temperature of the solutions will spike higher than wanted generating a larger enthalpy change. As a result, this is a reason contributing to the large enthalpy change in this lab; however, this reason is not very significant as the substances cannot be so impure the concentration on the label is extremely different then the concentration found in the bottle (it is illegal to put false information on chemical substances). As a result, the impurity of the substances cannot account for all the errors in this lab. Purifying the substances beforehand can easily eliminate this source of error. Moving on, there is another reason contributing to the large enthalpy change. The theoretical (actual) value given is obtained at SATP conditions; however, when the following lab was conducted, the conditions were not at SATP. SATP conditions are at 100kPa and 25ËC. The conditions when the lab was conducted were at 101.9kPa and 25ËC. By increasing the pressure, the reaction rate is increased and more reactions take place. As a result of a larger quantity of reactions occurring at 101.9kPa than at the standard SATP conditions, there will be a greater change in enthalpy at 101.9kPa. This as a result, contributes to the large difference in enthalpy change seen in this lab; however, like the previous reason, this is not a significant factor in increasing the enthalpy change. The pressure differences are not extremely different to cause the enthalpy change to increase to as much as they have in this lab. As a result, this is only a small contributing factor. Conducting this lab at SATP conditions will eliminate this source of error. In general, the main reason for the larger enthalpy change is due to not being able to tell when the reaction is complete and how the reaction is occurring in the calorimeter. As mentioned earlier, the result in this lab is very rare. This is mainly due to the fact that the Styrofoam calorimeter used to conduct the calorimetric experiment most likely does not provide a perfectly sealed environment. A hole is needed to be made to insert the thermometer. And there were many holes between the lid of the calorimeter and the calorimeter itself. Due to this ineffectiveness of the Styrofoam calorimeter, some of the heat from the reaction would have escaped through the many holes causing a lower final temperature of the reaction and the experimental enthalpy change to be lower than the theoretical (actual) value. As a result, the experimental value is usually lower than the theoretical (actual) value. Another reason includes the fact that some of the heat released during the reaction would have been transferred to the calorimeter itself instead of transferring to the thermometer. As a result, when the calorimeter and/or glass of the thermometer absorb the heat, it causes the thermometer to absorb less heat than it should. The final temperature will then be lower than it should be causing a lower enthalpy change. Even though this is not a main reason why the experimental molar enthalpy should be lower than the actual molar enthalpy it still contributes to it. As a result, with the combination of these factors the experimental enthalpy change should be lower than the theoretical value because a lot of heat is able to escape into the calorimeter and into the air due to there being holes in the calorimeter.