Personal Computers essays

Personal Computers essays In the last 1,000 years what has been the most revolutionary development? The answer would be the personal computer! Never has such a development been so promising, yet devastating at the same time. This miraculous invention comes two sided, the heads side being that we are now a very fast paced, and technologically advanced country, the tails side being that we now have in our midst a whole different accessibility to pornography, a decrease in physical activity of Americans, and a severe increase in opportunity for fraud and hacking. Before the personal computer was released to the public, only the mainframes existed. These mainframes took as much space as a Costco warehouse would take today! They were made up of PVC pipes and huge air-conditioning units for cooling the pipes off. Mainframes were primarily used for businesses or scientific studies. Personal computers brought a whole new light to the computer industry. Following the invention of the personal computer, a network was created by the military called the Internet. The Internet was made for the purpose that if an enemy were to strike us, we would have a network that was indestructible, consisting of independent servers all around the world. The military decided to extend this network to anyone who had a personal computer, thus creating a mass evolutionary transformation in the way everyone would communicate in the future. Along with this very good event came some sick people with the idea of pornography in mind. These people capitalized on the open market and it is now the most profitable profession on the Internet. In this past year there have been around 2,000 new sites every month. Like it or not, the online pornography industry has a knack for getting people to part with their money. Most mainstream Web sites do not. (Sun1) Another problem Americans face is the laziness of sitting down at a computer all day and not getting any physical activity. "...

Heat Transfer Essay Example

Heat Transfer Essay Example Heat Transfer Essay Heat Transfer Essay Consider the cylindrical receiver in a solar thermal power plant shown below. The receiver is made of opaque material and has a diameter D = 8m and length L = 14m. At a particular time, the heliostats direct a concentrated solar flux of q†S = 80 kW/m2 onto the receiver. The ambient air has a temperature T( = 300K and there is no wind. Under these conditions, the surface of the receiver has a temperature of Ts = 700K, an emissivity of ( = 0. and a solar absorptivity (S = 0. 8. i) Calculate the heat loss from the vertical surface of the receiver due to convection. Assume effects of curvature are negligible. ii) Calculate the heat loss from the vertical surface of the receiver due to radiative emission. Neglect irradiation from the surroundings. iii) Determine the collector efficiency. iv) If a wind started to blow, what would happen to the surface temperature of the receiver? Would you expect the collector efficiency to increase, decrease or remain the same? Explain your answers. (Note – assume all other conditions remain the same. ) [pic] Question 2 The roof of a refrigerated truck compartment is of composite construction, consisting of a layer of foamed urethane insulation (t2 = 40mm, ki = 0. 03W/mK) sandwiched between aluminium alloy panels (t1 = 6mm, kp = 200W/mK). The length and width of the roof are L = 12m and W = 4m respectively. The temperature of the refrigerated space within the truck is –15? C. The solar absorptivity and the emissivity of the outer surface are (S = 0. 3 and ( = 0. 7. Consider conditions for which the truck is moving at a speed of V = 90km/h, the air temperature is T( = 30? C and the solar irradiation is GS = 900W/m2. Assume turbulent flow over the entire roof. Take the average convection coefficient on the inner surface of the roof to be 0. 5W/m2K. i) Derive an equation for the average temperature of the outer surface Ts,o in the form and hence show that Ts,o ( 302K = 29? C. Assume a film temperature of 300K and neglect irradiation from surroundings. (No marks if your equation is not in the above form) ii) Determine the corresponding heat load imposed on the refrigeration system. iii) The average convection coefficient assumed for the inner surface of the roof is relatively low.

How to add cool graphics to your LinkedIn Profile!

How to add cool graphics to your LinkedIn Profile! Have you always wondered how some people got really cool graphics into their LinkedIn Profiles? Is it magic? No, it’s easy! All you need is your character map. â€Å"What’s my character map?† you may ask. If you are a mac user, I refer you to this forum. If you are a Mac user, I refer you to this list of how to insert special characters. Apple provides this help page as well for inserting emojis, accented letters, and other symbols into documents. If you are a PC user, go to your start menu and start typing character map into the search box. Or, if you dont have a search box because of an odd technical situation (not that I know from experience about this.. ehhemm) you can click on All Programs, then the Accessories Folder, then System Tools, then Character Map. Heres what youll see once you enter the character map: Choose the symbol you want to insert into your profile and double click on it. The symbol will appear in the Characters to copy box: Using this feature, you can insert foreign language alphabets, bullets of many varieties, and any other symbols that strike your fancy. You will then be able to create profiles that look like these (click to see full profiles): Another trick is to insert a line across the page for emphasis. Lines take up 40 characters but I think they’re worth it. The easiest way to create a line in your profile is to copy one from someone else’s profile. You can also use arrow instead of bullets. Heres what it looks like: Using a combination of graphic highlights, you can make your profile â€Å"pop† in a way that everyone else’s does not. In my opinion, it’s worth putting a bit of effort into any strategy that will keep people interested in reading past the first glance. Graphics can do that! Have you used graphics in your profile in creative way? You are invited to share what you’ve done in the comments below!

Public budgeting Article Example | Topics and Well Written Essays - 500 words - 1

Public budgeting - Article Example The article starts by laying down the statistics from the Federal Reserve displaying the high number of Americans, and the all-time $975 billion dollars in the year 2008. The projections as of the time was that debt would keep on increasing since people kept reaching for the credit cards debts in order to make ends meet. According to the statistics from the Sachs & Williamson (2009), many consumers have more than five credit cards, with an average total of about five each per family. The psychological look at the consumers by the researchers termed the consumers as having a low debt recovery modality owing to the many debts they find themselves wading. As such, they stray from what they term as normative debt management principles (Amar, et al., 2011). Consumers go forward and start paying individual debts while not looking at the value of each and every debt and prioritizing them. The total redemption from indebtedness is difficult, something that sometimes prompt consumer’s adoption of sub-goals that are normally aimed at settling the individual debts. They sometimes settle the small debts and remain with the huger ones. The oblivion borne by the consumers to the larger debts and misplaced focus by them is what takes a huge toll in the paper as the author analyses the things to do when one is indebted (Heckler, 2013). To the authors, paying of the small debts and remaining with the bigger ones might help relieve the burden but the amount to pay keeps sk y-rocketing as one dilly-dallies. The article is well arranged as the authors move from the obvious to the completely hard stuff concerning debt management. The authors lay down the statistics, the trend in debt management, then finally give their opinion of what should really be happening in the real world concerning the issue of contention. Authors term paying off of debts with larger

Asteroid Impact Discussion Essay Example | Topics and Well Written Essays - 250 words

Asteroid Impact Discussion - Essay Example Accordingly, â€Å"the pieces could still hit Earth, and we might not have enough firepower to do serious damage.† (Atkinson, 2009) Secondarily, â€Å"a nuclear explosion could reroute a space rocks trajectory clear of Earth;† (Keim, 2009) but, from the other perspective, this would need to be done decades before the asteroid reached us (Atkinson, 2009). Thirdly, it could be annihilated with an assistance of â€Å"direct beams of concentrated sunlight to the surface of an appropriately icy asteroid.† (Keim, 2009) Except these ones, there are also another variants that have their own pros and cons as well. For example, â€Å"electric propulsion,† â€Å"gravity tractor,† â€Å"solar salls,† etcetera. (Atkinson, 2009) As for me, and it will be going on as an overall conclusion, that among these variants of annihilating asteroids the aforesaid three are the most vital: direct nuclear explosions, nearby nuclear explosions, and laser sublimation. To conclude with, first one needs too much nuclear power embodied in a bomb but theretically it sounds effectively; furthermore, second one is needed to be concentrated very carefully on the asteroids orbit to push it off from the Earth; finally, â€Å"beams of the concentrated sunlight† could be regarded as very sufficient in case that average temperature of the asteroid is not higher that of â€Å"sunlight;† if not, they will only increase the overall temperature of the

Identify the role of State Legislators Essay Example | Topics and Well Written Essays - 250 words

Identify the role of State Legislators - Essay Example Under current law if a vehicle or vessel is driven recklessly and causes a serious bodily injury it is a fourth degree crime. Serious bodily injury creates a large or substantial risk of death or causes disfigurement, protracted loss or impairment of any bodily member or organ (http://www.njleg.state.nj.us/2010/Bills/A1000/676_S1.PDF). That action causing physical pain, illness or impairment is ‘bodily injury.’ Bill A676 would upgrade this crime of assault to a crime of the third degree which in turn would qualify it for further and more severe prosecution. This would bring about an increase from imprisonment of up to 18 month and a possible fine of up to 10,000 to a three to five year term of imprisonment with a possible fine of up to 15,000. As a Police Officer it is possible to be influential in the passing of bills and creation of new laws by acting as advocates and supporting lobbyist who represent the criminal justice sector and its promotion. Criminal justice agencies are extremely important in getting bills through the Legislature with the use of media contacts and public appeal. This involves getting the general public on board and in agreement with criminal justice agencies and proposed changes or recommendations in laws. Frequently and unfortunately it takes a tragic act to attract attention to areas of the law which need improvement and a better balance. Criminal justice agencies should definitely have a say and opinion in which laws are passed and how and what resources are located to which departments, in order of importance and interest of the public. Agencies usually are on the front line when dealing with the issues that Legislators are merely discussing and reviewing. They are not such as the Officer who constantly sees faulty policy or complete lack of policy in some cases and are best able to recognize the difference and improvements possible through the use of the agencies

Business paln for Arts cafe Essay Example | Topics and Well Written Essays - 750 words

Business paln for Arts cafe - Essay Example The plan purposes to help learners develop their skills in art and provide a relaxing environment for workers especially those in the financial institutions who often experience stress from the long hours of work and less time for recreation and entertainment. The Art Cafà © offers an opportunity for artists to sharpen their skills and a common discussion area for individuals having common interest in art to share ideas and explore the art industry. It will also serve snacks, coffee and tea beverages as refreshments to the visitors; this is based on a study confirming coffee and tea to be the highly consumed beverages. Employees at the cafà © will be middle-aged individuals with experience in art and coffee. The plan focuses its strengths on customers who love art and provision of quality coffee and tea as a means of overcoming the competition in the market. The business plan aims to promote the love for art by establishing an arts cafà © where individuals with interesting art can meet and share ideas. Thank