Locke vs. Rousseau Essay Example for Free

Locke vs. Rousseau Essay ?According to Rousseau, the original condition of mankind was a peaceful and quixotic time in which people lived solitary, uncomplicated lives. This differs from Lockes concept of the state of nature in that, his natural condition of mankind was a state liberty in which one was able to conduct ones life as they saw fit. Like Rousseaus, it was a time of peace between the people, but Lockes was not necessarily a solitary life. ?The state of nature for Locke was a state wherein there were no civil authorities or governments to punish people for transgressions against laws, but was not a state without morality. It was pre-political, but was not pre-moral. In it, persons were assumed to be equal to one another, and therefore equally capable of realizing and being obliged by the law of nature. (The law of nature being one internal, which commanded that no one should harm another as concerning their life, health, liberty, or possessions [p. 4]). In Lockes pre-contract condition, one was not at absolute liberty to do whatever one chose to do; they were inherently bound by the law of nature. ?Rousseaus state of nature had no private property. Private property was something which arose from the stages leading up to the need for authority. Where Locke saw property as something which was naturally protected in the state of nature, Rousseau conceived of property ? the result of greed, competition and vanity- as humanities reason for abandoning such a time and entering into the contract. ?For Rousseau, the few needs of the people in the pre-contract condition were easily satisfied by nature. Because of the abundance of nature and the small size of the population, competition was non-existent, and persons rarely even saw one another, much less had reason for conflict or fear. ?Moreover, for Rousseau, the simple and morally pure persons in the pre-contract condition were naturally endowed with the capacity for pity, and therefore were not inclined to bring harm to one another. There were no inherent ? laws forbidding transgressions on another; it was an internal aptitude for pity. It was the division of labor (once families and communities had developed and leisure time had resulted) that led to value and property, whereas Locke saw property as something that was existent in the natural condition.

Radio Resource Allocation Scheme

Radio Resource Allocation Scheme Intended for the multi-cell OFDMA based downlink network the Problem is to be formulated as an optimal joint resource allocation. Unfortunately, there is no time-efficient algorithm that can optimally solve equation (4.4) and directly finding the optimal solution will be computationally excessive at the point when the quantity of users and PRBs is huge in the all system. Subsequently, a conceivable problematic asset allotment framework proposed in this undertaking work. So as to decrease the multifaceted nature the asset designation plan is partitioned into two stages; radio asset and power allotments. In this segment, First we clarify the advancement of heuristic calculation for coarse ICIC and fine PRB task to accomplish a concentrated radio asset portion in the system. Subsequent to getting the answer for the radio asset assignment is and after that performed power portion in the second step, which will be talked about in the following area. Radio resources allocation scheme consisting of two phase, Phase 1-ICIC Phase 2- Fine PRB assignment. Phase-1 ICIC In the first phase of our proposed radio resource allocation is to develop an ICIC system using a simple but effective graph-based framework., Our objective is to develop chart that reflects real impedance happening in the ongoing system environment. As per the diagram hypothesis, the relating impedance chart is indicated by G=(V,E) where V is a situated of hubs every speaking to a client in the system, and E is a situated of edges uniting clients that can bring about overwhelming shared obstruction when they are assigned the same PRB. To decrease many-sided quality, the obstruction power for edge associations is resolved only by the nearness of clients in the system and topographical area. ie., cell-edge users suffer from severe interference due to the shorter distances to the adjacent BSs. The information for exact SINR measurements is not required at this stage. For building the edge association per pair, we characterize that the edge between user can and b is associated when E(a,b)=1, generally E(a,b)=0 and note that E(a,b)=E(b,a). The interference graph construction consisting of two basic rules they are as follows, Users inside of the same cell are commonly joined The association for any cell edge user is just match insightful set up with other cell-edge user of its dominant inteferering cells. The meaning of prevailing meddling cells is clarified by the previously stated presumption in framework model. Let Dm mean the set containing lists of prevailing meddling cells to cell-edge user m. Thus, an expressive illustration is shown in figure 5.1 given by (a) presents a simple 3-cell network case, where user 1,2,3 and 5 are cell-edge users of each cell and D1={1}, D2=à Ã‚ ¤, D3={3}, D5={1,2}, respectively. Then the corresponding interference graph is constructed. The concept of this graph-based framework is that simultaneous transmission on the same PRB is prohibited for users who are connected by edges, and thus both intra-cell interference and major ICI can be avoided in the network. Fig 5.1: An example of the graph-based framework. (a) 3-cell scenario (b) Interference graph construction. Phase-II Fine PRB Assignment The first phase construction offers the network with a strategic planning for ICIC but the actual PRB allocation has not been done up till now. In the second phase, therefore we will come to a decision how to practically make the PRB assignment in the network given the interference graph. To reduce complexity, a heuristic algorithm is proposed here to perform a fine PRB allocation by taking account of the instantaneous channel quality. As, major ICI is well looked after by the first stage in the second stage we consider simply SNR for ease by removing the interdependency matter of SINR At this stage power is thought to be similarly disseminated over all PRBs as a result of the force allotment will be tended to in next segment. Thus, SNR for m on PRB n is computed by SNRnm=(Pmax/N)g(j-m)/N0, where j is the serving cell of user m. Let Rm be the arrangement of users why should permitted have the same PRB or in another word, the same shading with user m in the system. Then the PRB allocation can be described in Algorithm 1. Note that finding the necessary Rm is also included in this algorithm. As indicated in Algorithm 1, the PRB assignment decision made to a user is resolved by the in a split second accomplished SNR as well as by a weighting element show by wm. The primary capacity of wm is to adjust the PRB distribution between cell-edge and cell-focus users of the system, i.e., higher weighting worth is given to cell-edge users as altogether reason they accomplish much lower SNRs contrasted with those of cell-focus users. Then again, the relative decency is likewise considered by making note of the quantity of PRBs as of now being used and in this way keeps the PRB designation from being selfishly abused by minority users in the system., Therefore, calculation 1 has the capacity perform PRB allotment that proficiently accomplishes a general execution change with great fairness amidst those two sorts of users in the system taking into account the weighted SNR . At that point the PRB designation can be demonstrated in Algorithm 1. As shown in Algorithm 1, the PRB contribute to choice complete to a user is strong-minded not just with the right away achieved SNR other than too with a weighing factor indicated by wm. The first function of wm is to balance the PRB allocation among cell-edge and cell-centre users of the network, i.e., higher weighting value is given to cell-edge users as in general they achieve much lower SNRs compared to those of cell-centre users. Then again, the relative uniformity is additionally considered by making note of the quantity of PRBs officially involved and in this way keeps the PRB assignment from being selfishly abused by minority users in the system. Thus wm can be expressed by wm=w/|Nm|, where Nm is set of PRBs that are before allocated to user m,| ` | is the cardinality of a set (note that |Nm|= 1 if Nm=à Ã‚ ¤), w = we when user m is a cell-edge user, otherwise w=wc and we>wc for return of the relatively low SNR received by cell-edge users. Algorithm 1 is able to perform PRB allocation based on the weighted SNR that effectively achieves an overall performance improvement with good fairness among those two types of users within the network. Therefore, radio resource distribution schemes effectively mitigated major ICI among cell-edge users of the network. On the other hand, cell-centre users are authorized to distribute PRBs by means of all users within the network (except their serving cells) and thereby may interfere with either cell-edge or cell-centre users of the adjacent cells depending on the PRB allocation by Algorithm 1, This interference determination be dealt by way of the following power allocation move towards. Power Allocation Approach Subsequent to completing the PRB assignment, the estimations of all parallel variable aj mn in mathematical statement (4.4) are resolved. Hence, the first issue is diminished to streamlining issue where just transmission power pj mn is considered. Not at all like the radio asset assignment, the power portion is chosen separately in every cell and after that performed BSs in appropriated way. Accordingly, an appropriated force designation methodology is proposed in this segment with significance on execution advancement for cell-edge users. Total Power Distribution: First and foremost we partition the aggregate transmission power of each cell into two sections: aggregate power of cell-edge users and cell-center users. Let Pj E and Pj C indicate the aggregate power distributed to cell-edge users and cell-center users in cell j, individually, and PjE+PjC=Pmax. Note that Pmax is assumed to be same for all BSs in the network. The determinations of PjE and PjC are based on following rules; relatively higher power is given in the direction of cell-edge users within order to balance the experienced large distance dependent path loss; and PjE(PjC) is proportional to the number of PRBs occupied with cell-edge (cell centre) users in cell j therefore, the relationship between PjE and PjC is expressed as shown in below equation (5.1) .. (5.1) Where BjC and BjE denote sets of total PRBs occupied by cell-centre and cell-edge users within cell j, respectively, and a(0 Power Allocation for Cell-Centre Users Keep in mind the issue detailing, the reason for comparison (4.4) is to restrictively expand the execution of cell-edge users and there is no improvement for cell-center users, while security of their execution is expressed as an essential breaking point. Subsequently, we essentially power the power designation to cell-center users by uniformly disseminating the aggregate power of cell-center users among their utilized PRBs as a part of every cell. Let pj(c).mn mean the power assigned to PRB n utilized by cell-center user m in cell j. At that point the neighborhood power assignment for cell-center users can choose by pj(c).mn demonstrated in comparison (5.2) pj(c).mn = PjC/|BjC|, .. (5.2) Note that user m in foreordained from the past PRB designation calculations by accomplishing aj.mn=1. Accordingly, in the accompanying we pass up a great opportunity m from the subscript variables of pj(c). Mn and streamline the expression as pj(c)n. To keep away from perplexity, we evacuate the general user file m from the subscript of all variables in the rest of this task. Power Allocation for cell-edge users Given the stable PRB portion and force designation of cell-center users, the first improvement issue demonstrated in comparison (4.4) turns into a raised capacity of power of cell-edge users and can be deteriorated into J parallel sub-issues, where the ideal power allotment to cell-edge users is understood near to every BS of the system. Note that such sub-issues are characterized as a grouping of comparison (5.3), where just joint obstruction between cell-edge and cell-center users is taken into clarification. Let pj(e)n indicate the force assigned to PRB n utilized by a cell-edge user in cell j. Along these lines, the target of P2 for cell j is communicated as demonstrated in underneath mathematical statement (5.3) .. (5.3) Where hjn (hj*n) indicates the joint channel impact on PRBn in cell j(j*) including the channel gain and path loss fading components presented in (3), i.e., hjn=g(j-m)nL_d(j-m)_ and Sjn is a set of neighbouring cells in the network (i.e., j*_=j,j*Ej), inside which PRB n is used with a cell-centre user at the moment. Above equation (5.3) is subject to the following constraints of the equation (5.4) .. (5.4) Where yj*n is the SINR accomplished by a cell-center user of neighboring cell j* to whom p(e)n is the impedance source on PRB n, and Ɇ¦ is a suitable SINR edge decided to keep up elite of cell-center users in cell j*. The thought of P2 is to utilize power allotment to boost execution of cell-edge users under the imperative that execution of cell-center users is not generally give us. In other words, power allocation to cell-edge users to be conditionally optimized During order not to generate undesirable interference to cell-centre users in the network. In addition, here we take for granted that required information about the power allocation of cell-centre users in adjacent cells in known by each BS, which in fact are achievable in future wireless networks where specified links, such as the X2 interference in LTE, are built to connect BSs for necessary information exchange among them. The Optimal Solution can be derived in below equation (5.5) (5.5) As a barrier-constrained water-filling process the deviation can be also described graphically. By defining 1/Hjn as the base, 1/ln2~ÃŽ » as the water level and 1/ln2~ÃŽ »-Tjn as the barrier. The allocated power is indicated by the area (e.g., 1 and 2) below the water level and above both base and barrier. The allocated power is zero when either the base or barrier is above the water level. In addition, if the barrier (blue dashed line) is completely under the base, the base, the problem turns into a conservative water-fitting process. Fig 5.2: An example of a barrier-constrained water-filling process.     Ã‚   Lastly, the optimal solution of ~ÃŽ » and ~pj(e)n can be obtained by well known sub-gradient method, which can assurance a rapid convergence after a number of iterations. The difficulty of the future power distribution is O(||BjE||) which is self-governing of the number of cells in the network. Also this complexity is less than that of the general optimal power allocation where the complexity is O(N). For example, because the optimal power distribution is only executed intended for cell edge users and normally |BjE|

Strategic Management of McDonalds Essay -- Business, Case Study, solu

PROBLEM IDENTIFICATION The main problem from McDonald's case, McDonald's Polishing the Golden Arches, is how to classify McDonald's strategy through Plan to Win into one of the five generic competitive strategies. Before we solve this main problem, we should determine the chief economic and business characteristics, the five forces analysis, and also the driving forces of the fast-food industry. After that we identify the strengths, weaknesses, opportunities, and threats by using SWOT analysis. Finally, we classify McDonald's strategy into one of the five generic competitive strategies. ANALYSIS The chief economic and business characteristics of the fast-food industry In 2003 sales for the U.S. consumer food-service market totaled approximately $408 billion. For the sandwich segment, the top 30 sandwich chains had U.S. system wide sales of approximately $64 billion. Future growth in the sandwich segment was expected to be only around 2 percent annually for the foreseeable future. McDonald's and Burger King were the earliest and most aggressive hamburger chains to begin to expand internationally. The products of the various sandwich chains in U.S. were strongly differentiated, continuously follow the trends that are changed all the time. The five forces analysis and the driving forces of the fast-food industry By using the Porter's five forces model of competition, we identify rivalry among fast-food chains and buyers as the strong forces that make the competition in fast-food industry more and more tighten. In general, McDonald and its main competitors (Burger King Corporation, Wendy's International, Inc., Hardee's, and Jack in the Box) are active in making fresh moves to improve their market standing and bus... ...simultaneously by making the restaurants more efficient to increase the speed of service and emphasizing hospitality, accuracy, and cleanliness with new training and incentives programs worldwide. 2) Leadership marketing McDonald should maintain "I'm lovin' it" all the time and treat it more than a marketing campaign in order to deliver a global brand message through advertising, packaging, and restaurant experiences. This can be used for shaping McDonald's employees attitude in serving the customers. 3) Innovation McDonald must make a lot of innovation in order to satisfy its customers and win the competition because successful innovation can strengthen the market position of the innovating companies. For example, by featuring a variety of Value, Premium, and wholesome menu offerings, McDonald can deliver the right products at the right price for its customers.

Essay --

Table of Contents 1. Acknowledgement 2 2. Introduction 3 3. TelBru 4 3.1 Company Profile 4 3.2 Services that provided by TelBru 5 3.3 Home and Business Line 5 3.4 High Speed Broadband (HSBB) 7 3.5 e-Speed 9 3.6 e-Bill 10 3.7 e-Domain 11 4. DST 12 4.1 Company Profile 12 4.2 Services that provided by DST 13 4.3 Prima 14 4.4 Easi 15 4.5 Easi Transit 17 4.6 Postpaid Broadband 18 4.7 Prepaid Broadband 19 4.8 D*Card 20 5. b†¢mobile 23 5.1 Company Profile 23 5.2 Services that provided by b†¢mobile 23 5.3 The Smart Plan 24 5.4 YES! Plan 25 5.5 ZOOM! Broadband 27 â€Æ' 1. Acknowledgement I would like to express my special thanks of gratitude to my lecture sir Dennis, lecturer of Computer Data Communication (CDC) who give me the golden opportunity to do this wonderful project on the topic of identify the kinds of services of ISPs (Internet Service Provider) in Brunei, which also helped me in doing a lot of research and I came to know about so many things. â€Æ' 2. Introduction â€Æ' 3. TelBru 3.1 Company Profile Fig.1 TelBru Name: Telekom Brunei Berhad (TelBru) Chairman: Yang Mulia Dato Paduka Haji Hisham bin Haji Mohd. Hanifah Incorporated: 30th May 2002 under the Company Act Cap 39 Fully Operational: 1st April 2006 Shareholder: Minister For Finance Corporation (MOFC) and Brooketon Sdn Bhd (Government’s company under the Ministry of Finance). Address: Headquarter Unit 1.01, Block D, Yayasan Sultan Haji Hassanal Bolkiah Complex, Jalan Pretty, Bandar Seri Begawan BS8711, Brunei Darussalam. Telephone No.: +673 2321321 â€Æ' 3.2 Services that provided by TelBru †¢ Home Line & Business Line †¢ High Speed Broadband (HSBB) †¢ eSpeed †¢ eBill †¢ eDomain 3.3 Home and Business Line Fig.2 Home & Business Line There are four type of fixed telephone system in B... ...tional numbers b†¢mobile to b†¢mobile landline b†¢mobile to other mobile operator Peak: $0.30/min $0.20/min $0.10/min Off-Peak: $0.20/min $0.10/min $0.10/min Prevailing IDD rates Midnight $0.05/min $0.10/min SMS: b†¢mobile to all local number b†¢mobile to international number $0.05/sms $0.20/sms MMS: b†¢mobile to all local number b†¢mobile to international number $0.10/sms $0.30/sms WAP & Mobile Internet $0.05/1MB Table 26: Rates & Charges for YES! Prepaid 5.5 ZOOM! Broadband ZOOM! Broadband is b†¢mobile’s 3.5G High-Speed Internet Service. There are currently 2 ZOOM! Broadband Plans: 1. ZOOM! Lite ($30 per month) 2. ZOOM! Unlimted ($60 per month) ZOOM! Broadband Plan: SMS MMS Voice Video Data ZOOM! Lite Free 300 Free 10 Free 450 min Free 50 min 2GB ZOOM! Unlimited Free 800 Free 30 Free 1000 min Free 200 min Unlimited Table 27: ZOOM! Broadband Plan

Liberty Cabbage: Culture and Propaganda Essay -- Media Government Pape

Liberty Cabbage: Culture and Propaganda I happened to live in two countries with opposite political regimes – socialism in the USSR and democracy in the USA. I was growing up in the USSR, usually finding myself obedient to the will of the ruling Communist Party, sincerely thinking (as well as many people of my age) that my country has the most humane regime in the whole world. When I got older and the Iron Curtain fell, the unadorned reality confronted me: the Soviet Union was not a peace-loving democratic country but a totalitarian regime with a explicit goal of replicating itself all over the world; in short, a monster in sheep’s clothing. What made me believe back then that my former country had such a perfect regime? A one-word answer is: propaganda. The Soviet government skillfully manipulated cultural values of the Russian people to create an illusion that we live in the country of our dreams. The bravest of us allowed ourselves to have another opinion. They listened to Radio Liberty and dreamed of livi ng in the United States (although nobody expected the Soviet regime to fall). What is it like, we wondered, to live in a country where the government does not feed deliberate lies to its own people distorting cultural traditions and history? I dreamed about living in the United States because it was our guiding light to a real democracy. However, as it seems now, the government of the United States, just like the Communist Party in the USSR, plays on cultural values of its people to make them agree to the agenda of the dominant political and social structures. The majority of American people would argue that they are absolutely independent in their opinions, that the United States is a leading democratic country in th... ...oam. Interview. Redeye Collective. By Chris Spannos. 24 May 2002. Filatov, S. â€Å"Thrown Out on the Street.† Pravda 10 Dec. 1979: 5. Grigoriev, Oleg. A Bird In a Cage. Saint Petersburg: Ivan Limbach, 1997 Hunt, Michael H. Ideology and U.S. Foreign Policy. Yale: Yale UP, 1987. Nunberg, Geoff. †The language wars.† Fresh Air. NPR. WHYY. Philadelphia. 23 Apr. 2003. Operation Iraqi Freedom. The White House. 21 Apr. 2003. Parenti, Michael. â€Å"Methods of Media Manipulation.† The Humanist 57 (1997): 5-7. ISU Expanded Academic ASAP. 22 Apr. 2003. Schabner, Dean. â€Å"Conservative Backlash.† ABCNews.com. 12 March 2003. 22 Apr. 2003. Liberty Cabbage: Culture and Propaganda Essay -- Media Government Pape Liberty Cabbage: Culture and Propaganda I happened to live in two countries with opposite political regimes – socialism in the USSR and democracy in the USA. I was growing up in the USSR, usually finding myself obedient to the will of the ruling Communist Party, sincerely thinking (as well as many people of my age) that my country has the most humane regime in the whole world. When I got older and the Iron Curtain fell, the unadorned reality confronted me: the Soviet Union was not a peace-loving democratic country but a totalitarian regime with a explicit goal of replicating itself all over the world; in short, a monster in sheep’s clothing. What made me believe back then that my former country had such a perfect regime? A one-word answer is: propaganda. The Soviet government skillfully manipulated cultural values of the Russian people to create an illusion that we live in the country of our dreams. The bravest of us allowed ourselves to have another opinion. They listened to Radio Liberty and dreamed of livi ng in the United States (although nobody expected the Soviet regime to fall). What is it like, we wondered, to live in a country where the government does not feed deliberate lies to its own people distorting cultural traditions and history? I dreamed about living in the United States because it was our guiding light to a real democracy. However, as it seems now, the government of the United States, just like the Communist Party in the USSR, plays on cultural values of its people to make them agree to the agenda of the dominant political and social structures. The majority of American people would argue that they are absolutely independent in their opinions, that the United States is a leading democratic country in th... ...oam. Interview. Redeye Collective. By Chris Spannos. 24 May 2002. Filatov, S. â€Å"Thrown Out on the Street.† Pravda 10 Dec. 1979: 5. Grigoriev, Oleg. A Bird In a Cage. Saint Petersburg: Ivan Limbach, 1997 Hunt, Michael H. Ideology and U.S. Foreign Policy. Yale: Yale UP, 1987. Nunberg, Geoff. †The language wars.† Fresh Air. NPR. WHYY. Philadelphia. 23 Apr. 2003. Operation Iraqi Freedom. The White House. 21 Apr. 2003. Parenti, Michael. â€Å"Methods of Media Manipulation.† The Humanist 57 (1997): 5-7. ISU Expanded Academic ASAP. 22 Apr. 2003. Schabner, Dean. â€Å"Conservative Backlash.† ABCNews.com. 12 March 2003. 22 Apr. 2003.

Basic Parts of Computer Essay

Introduction Almost everyone uses a computer daily, but many don’t know how a computer works or all the different individual pieces that make it up. In fact, many people erroneously look at a computer and call it a CPU or a hard drive, when in fact these are just two parts of a computer. When these individual components are connected together they create a complete and working device with an all encompassing name of computer. As a computer user it is important that you have a basic understanding of the core components that make up your computer. This knowledge will prove invaluable if you decide to upgrade your computer or if a piece of hardware breaks and you need to purchase a replacement. The purpose of this is to discuss the basic pieces in every computer and their function. HISTORY OF COMPUTER The computer as we know it today had its beginning with a 19th century English mathematics professor name Charles Babbage. He designed the Analytical Engine and it was this design that the basic framework of the computers of today are based on. Generally speaking, computers can be classified into three generations. Each generation lasted for a certain period of time,and each gave us either a new and improved computer or an improvement to the existing computer. First generation: 1937 – 1946 – In 1937 the first electronic digital computer was built by Dr. John V. Atanasoff and Clifford Berry. It was called the Atanasoff-Berry Computer (ABC). In 1943 an electronic computer name the Colossus was built for the military. Other developments continued until in 1946 the first general– purpose digital computer, the Electronic Numerical Integrator and Computer (ENIAC) was built. It is said that this computer weighed 30 tons, and had 18,000 vacuum tubes which was used for pr ocessing. When this computer was turned on for the first time lights dim in sections of Philadelphia. Computers of this generation could only perform single task, and they had no operating system. Second generation: 1947 – 1962 – This generation of computers used transistors instead of vacuum tubes which were more reliable. In 1951 the first computer for commercial use was introduced to the public; the Universal Automatic Computer (UNIVAC 1). In 1953 the International Business Machine (IBM) 650 and 700 series computers made their mark in the computer world. During this generation of computers over 100 computer programming languages were developed, computers had memory and operating systems. Storage media such as tape and disk were in use also were printers for output. Third generation: 1963 – present – The invention of integrated circuit brought us the third generation of computers. With this invention computers became smaller, more powerful more reliable and they are able to run many different programs at the same time. In1980 Microsoft Disk Operating System (MS-Dos) was born and in 1981 IBM introduced the personal computer (PC) for home and office use. Three years later Apple gave us the Macintosh computer with its icon driven interface and the 90s gave us Windows operating system. As a result of the various improvements to the development of the computer we have seen the computer being used in all areas of life. It is a very useful tool that will continue to experience new development as time passes. The Outside of your Computer When you look at your computer what you are seeing is actually the computer case. Inside the case are all of the individual components that when connected together create your computer. On the outside of the case you will see various external ports that you can plug devices into as well as the ability to access your optical devices such as your CD and DVD drives. Front of a Dell Inspiron DesktopBack of a Dell Inspiron Desktop On the front of the computer you will commonly find a CD or DVD drive that can be opened by pressing a small button near the door of the drive. This will eject the drive tray where you can place a CD or DVD disk. When you press the button again, the tray will slide back into your computer so that you can access it from within your operating system. On the front of the case, you will also typically find USB ports and media readers. A USB port is a small opening on the front of your computer that allows you to plug a USB device or cable into it. You can usually determine if a port on your computer is USB as it will have the logo next to it. Common devices that you would plug into USB ports are iPod and iPads, flash drives, and external hard drives. The other common ports that you can find are for camera memory media. These media readers allow you to remove the memory card from your camera and insert it into the computer so you can access the images stored on it. On the back of the case are connectors that are typically only used when you assemble your computer for the first time. These connectors allow you to connect external devices such as your printer, monitor, mouse, keyboard, and speakers. The back connections will also include an Ethernet port that will allow you to connect your computer to your network. Last, but not least, there will also be more USB ports available in the event that you need more USB connections than are available on the front of your computer. The Inside of your Computer Now that you know how to connect your various external components to your computer case, let’s take a look at the inside of a computer as this is where the magic really happens. To open your case, you will need to typically unscrew a side panel or press a button on the bottom of the computer to open the computer like a clamshell. Once you can see inside a computer, you will see various individual components connected via cables or plugged directly into a large board attached to the side of the case. This board is the motherboard and is used to connect all the individual devices inside your case into a single computer. These individual devices and the motherboard they plug into can be seen in the image below. As you can see from the image above, there are various components all connected to each other. Every device must be connected to the power supply unit , which provides electricity to various components. The add-on cards, each performing their own function, are inserted to the motherboard so that they can communicate with it. When all of these components are properly connected to each other, they can then communicate with each other and the computer will operate properly. In the next section we will discuss each individual component and what function they serve. The individual parts of your computer As already stated, a computer is nothing more than various individual hardware components connected to each through cables and the motherboard. These devices are then given electricity by the power supply unit so that they can function. In this section we will discuss the individual components and the function that each performs. * Computer Case The computer case, also called a chassis, houses and protects other core parts of the computer. Computer cases come in different sizes and shapes in order to accommodate the various environments that they will be stored in. These shapes are: * Tower – A tower case is vertical and usually sits on the floor. A tower case comes in a mini, mid, and full size, with the larger sizes being able to hold more components. * Desktop – A horizontal case that is designed to rest on a shelf or sit on your desk with the monitor on top of it. * Rackmount – Rackmount cases are horizontal and are typically used for servers. These servers will then mount in a rack so that there are stacks of computers in one computer rack. Full Tower CaseRackmount Case Computer cases also need to support the largest component that resides inside it, which is typically the motherboard. The motherboard can come in many different shapes and sizes, called form factors, and the specifications on a computer case will state which form factors can fit inside it. Virtually all modern cases have: * Power switch * Indicator lights such as disk activity or network activity. * Back panel that contains holes to expose external ports. * Metal framework to house the PSU and hard disk/optical drives * Mounting points to secure the motherboard * Vented panels to allow airflow through the case Depending on the model, some cases have other features as well such as headphone jacks or USB ports. * Motherboard The motherboard, or mobo for short, is perhaps the most critical piece of the computer. It is a relatively large, rectangular board filled with various circuits, chips , and slots that you plug things into The motherboard serves two functions. First, the motherboard is home to a number of chips that dictate how the various components of the computer will talk to each other. It also has special slots that allow you to plug expansion cards in that add new or improved functionality to your computer. Secondly, and perhaps most importantly, the motherboard is the connecting point for all of the other pieces of the computer. Without the motherboard, the different parts cannot communicate with each other, and the computer cannot function. Computer Motherboard Motherboards come in a variety of sizes, or form factors, such as ATX or micro ATX. Generally speaking, the larger the form factor the more devices can be attached to it. Motherboards connect with the other devices in your computer using a set of special slots and connectors called ports that are located on the top and back edge of the motherboard. The ports on the back edge of the motherboard protrude out of the back panel of the computer case and allow you to connect external devices to the computer. Virtually all modern motherboards have one or more USB ports and an Ethernet port mounted externally to allow connection to the internet and external devices. Additionally, all modern motherboards contain at least one IDE or SATA port to allow the connection of a hard drive. * Central Processing Unit(CPU) The central processing unit, or CPU, is at the core of every computer. Functioning as the â€Å"brain† of the computer, the CPU performs basic mathematical and logical functions as instructed by a computer program. The CPU is located on the motherboard and is connected to it through a special port called the CPU socket. When the CPU is in use it generates heats, which must be transferred away from CPU chip so that it is not damaged. This is accomplished through the use of a heat-sink and fan which draws the heat out of the CPU chip and transfers it into the case instead. computer’s CPU A CPU has a maximum speed at which it can safely process instructions. This speed is called the clock rate and is measured in hertz (Hz). Some CPUs will allow a user to raise the clock rate beyond the speed at which the CPU is safely rated. This is called overclocking, and can provide increased computer performance at the cost of potential system instability or damage. Due to the complexity of overclocking and the potentially destructive side effects it can cause, overclocking is a technique not recommended for average or professional computer users. A relatively recent development in the field of CPUs is the multi-core processor. Having many processing cores in the CPU effectively multiplies its potential by allowing the CPU to simultaneously process as many instructions as it has cores. However, the OS must be designed to make use of multiple cores for this ability to take effect. The CPU of a modern PC will likely have anywhere from two to eight cores * Power Supply Unit All parts of a computer require electricity in order to operate. The part of the computer that provides this electricity is called the power supply unit, or PSU. The PSU receives electricity from an external source, which is usually a wall outlet, and changes it into power that the other parts of the computer can use. Power Supply A PSU is necessary for two reasons. First, computers require direct current, or DC, power. However, electricity is supplied by power companies in alternating current, or AC, form. The PSU takes the AC electricity and converts it into a DC form so that the computer can use it. The second reason is that computer components use electrical power of relatively low voltage, while the electricity that comes out of a wall socket is of a significantly higher voltage. The PSU converts the higher voltage energy into a low voltage form that the computer can properly use. Power supplies are classified by the maximum amount of watts, such as 500 or 650 watts, which can be supplied to your computer system. The amount of electricity that is required to power a computer depends on what components the computer is using. For example, if you are using a high-end processor and a high-end video card your power you may need a more powerful PSU to support these power hungry devices. Therefore, when buying n ew components for a computer you should always look at the specifications for these devices to determine how much power they need and whether or not your PSU can support it. * Hard Disk Drive The hard disk drive, or HDD, is the primary source of secondary storage in modern computers. Secondary storage is any device where information is stored when it is not needed for immediate use. An HDD uses magnetism to record information on a rotating disk of magnetic material. It uses a moveable arm containing a device called a drive head to read from and write to different portions of the disk.. Since the disk remains magnetized even after power is removed, information is not lost when you turn off the computer. One downside of HDDs is that they are very slow compared to other devices in the computer. This is because the drive must position the arm and disk in the correct position in order to retrieve a particular piece of information. Hard Disk Drive Modern HDDs have three major variables. The first is the drive capacity. This is how much information the drive can hold. Drive capacity is measured in either gigabytes (GB) or terabytes (TB). One terabyte is equal to one thousand gigabytes. The second variable is the rotation speed. This is how quickly the disk inside the HDD can rotate, and is measured in rotations per minute (RPM). The faster the disk spins, the more quickly information can be retrieved from it. The final variable is the type of interface the HDD uses. The interface is the part of the HDD that connects to the motherboard and is how the HDD sends and receives information. Most modern HDDs use SATA or SAS interfaces, although HDDs using IDE interfaces are still somewhat common. It is important to know which interfaces your motherboard supports when purchasing a new HDD. A recent addition to the personal computer market is a technology called a solid state drive, or SSD. While not technically an HDD, SSD’s fill the same functions. The difference between HDDs and SSDs is that while an HDD uses a spinning disk to store data, an SSD uses special microchips. Due to this, SSD’s are less susceptible to physical shocks such as impacts and falls compared to a HDD. Additionally, SSDs run silently and can access data more quickly. However, SSDs have a higher cost per gigabyte than their HDD cousins do. * Optical Disk Drives An optical disk drive is a component that uses a laser to read from or write to an optical disk. Examples of optical disks include CDs, DVDs, and Blu-Rays. An optical disk drive writes to a disk by using a laser to etch tiny grooves into the surface of the disk. The disk is read by using a different, low-power laser to detect those grooves. Modern optical disk drives usually have reading and writing (burning) capability. Additionally, most optical drives are backwards compatible, which means that a new technology can read the media from an older technology. For example, a Blu-Ray drive can also play DVDs and CDs. Optical Drive Optical disk drive speed is measured differently than HDD speed. While HDD speed is measured in the number of RPMs, optical drive speed is measured by the maximum rate at which data can be read from the disk. For each technology (CD, DVD, Blu-Ray) there is an industry-wide standard data rate that serves as a benchmark by which drive speeds are measured. The speed listed is put in terms of multiples of that base speed. For example, the base speed for Blu-Ray technology is 6.74 megabytes per second. Therefore, a drive rated at 52x can read data at a maximum rate of 52 x 6.74 = 350.48 megabytes per second. * Cooling Devices As a computer runs, it generates a lot of heat. One or more cooling devices are part of any modern computer in order to keep the machine from overheating. The two types of cooling devices that are in almost every modern computer are heat sinks and cooling fans. Heat sinks are small metal structures that conduct heat well. They function by absorbing the heat produced by a component and efficiently releasing it into the air, or a liquid in certain special situations, similarly to how the radiator in your car works. Cooling fans work by removing warm air from components or heat sinks and pulling in cool air to replace it. Fans are available in a variety of sizes that determine how much air they can move within your case. When adding a fan, it is important to ensure that you purchase a fan that is compatible with your motherboard, since different fans have different kinds of power connectors. CPU Heat Sink and Fan Some extremely high-end PCs have liquid cooling systems which use tubes of flowing water or coolant instead of or in addition to cooling fans. These systems are more effective, quieter, and more efficient than air cooling systems. However, they are complex, expensive, and carry the danger of a coolant leak which can damage the system. For a typical PC, air cooling systems are sufficiently effective. * Memory Random Access Memory, or RAM, is the part of the computer where information is stored while it is being used by the computer’s processor, operating system, programs, and other devices on your computer. RAM is designed so that any of the information stored on it can be read in any order without losing performance. This makes RAM faster and more efficient to store data compared to slower devices such as an HDD or CD-ROM. Computer Memory When you are using your computer it copies information that it is currently using, such as parts of the operating system or currently running programs, into RAM so that it can work faster. The more RAM that the computer has, the less often it needs to get information off of the much slower HDD. To use a comparison, think of your HDD as a well. The information on the HDD is the water in the well, and the RAM is a bucket. The bigger your bucket, the fewer trips you have to make to the well to get the water you need. One characteristic of RAM is that it is volatile. This means that when you turn off the computer, any information in the RAM is erased. To protect against loss of information, an operating system will copy any data that it needs to the HDD so that it is available the next time you start the computer. RAM comes in different speeds and types. When you upgrade your computer’s memory, it is important that you ensure that you choose a speed and type of RAM that is compatible with a computer’s motherboard. A great tool for finding out what kind of memory your computer uses is Crucial’s Memory Advisory. * Expansion Cards An expansion card is a device that is inserted into special slots on the motherboard and provides the computer with additional functions, resources, or features. There are a number of different kinds of expansion cards available; two of the most common being video cards, which provide increased graphics processing ability, and sound cards, which enhance the audio ability of the computer. Some expansion cards such as video cards also include their own processor, memory, and even cooling devices such as fans or heat sinks. When purchasing expansion cards there are a number of important factors to consider. First and foremost is the type of connection that the expansion card requires. There are a number of different standards for expansion slots, and motherboards have only a limited number of each kind of slot. Before purchasing you need to ensure that your motherboard has the required slots available for use. Another important factor is the size of the expansion card. The card needs to be able to fit inside your computer case, and should not make contact with any other parts of the computer except for the motherboard. Finally, you should ensure that your PSU can output enough power to support all your connected expansion cards. If the PSU cannot supply the computer with enough electricity then one or more of your devices will fail to function. Two common types of expansion cards are sound and video graphic cards * Sound Cards Sound cards are a kind of expansion card which deals with audio input and output. Sound cards generally fill two functions. First, sound cards enhance the sound processing capability of the computer, allowing for the creation and output of more complex sounds. Secondly, sound cards often possess input and output ports that allow for other audio devices such as microphones or speakers to be connected to it. Sound Card * Video Cards A video card is a type of expansion card which increases the computer’s ability to handle different kinds of visual output. Video cards have two main functions. First, while nearly all modern motherboards have some basic graphics capabilities built in, a video card can handle graphics issues much more effectively than the graphic chips built into the motherboard. As a result, a video card allows for the creation and display of more complex and detailed images without putting an additional strain on the CPU. Additionally, since many video cards have their own memory, this leaves more of the general computer memory available for other purposes. Second, many video cards add additional functions to the computer such as video capture, a TV-tuner which allows you to watch TV on your computer, or the ability to connect multiple monitors to the computer. Video Graphics Card * External Ports As mentioned above in the motherboard section, a number of connectors on the motherboard are accessible from the back panel of the computer case. These connections are called external ports because they can be accessed from outside the computer case. There are a number of different kinds of connections available that include: * VGA or DVI Connector- These ports are used for connecting a monitor or other display device to your computer. * Ethernet Port – This port allows you to connect your computer to a network or the Internet. * HDMI – Allows you to connect your computer a High Definition display or TV. * eSATA – These ports allow you to connect an external SATA hard drive to your computer. * USB Port – A common connector for external devices. More information about USB ports can be found below. External Ports on the back of a computer Virtually every modern PC also includes one or more USB, or Universal Serial Bus, ports. There are two primary kinds of USB ports in use right now: USB 2.0 and USB 3.0. USB 3.0 ports can move data much more quickly than USB 2.0 ports. However, the connected device must be designed to take advantage of USB 3.0 technology in order to use the increased speed. USB ports and devices are both backwards and forwards compatible. This means that you can plug any standard USB device into any standard USB port, and the device will function. However, if the USB version of the device and the port do not match then the device can only transfer data to and from the PC at a maximum rate set by the lower of the two versions. For example, if you connect a USB 3.0 device to a USB 2.0 port, the device will only transfer data at a maximum rate of 60 megabytes per second, which is the maximum rate for USB 2.0 technology. When purchasing an external device such as a monitor, keyboard, mouse, or printer it is important to ensure that you have the correct kind of port available for use. Otherwise you will be unable to use the device. Conclusion As you can see, a computer is more than that box sitting on the side of your desk. In fact it is a very complex machine comprised of numerous parts, cables, and devices that all need to properly work together in order for the computer to operate correctly. Having this basic understanding of the parts of your computer is important for any computer user. Whether you need to purchase a new one, upgrade an existing one, or repair a broken one, you now have the knowledge to understand what you are looking at.

J Qubec

Should school uniforms be abolished? Against A uniform is a distinguishing symbol of a school and gives a sense of belonging to all the students who wear it * A uniform is a distinguishing mark of a school and gives a sense of belonging. * If dress is standardized, the wealthier students would have no scope to outdo the poorer ones. This prevents the development of inferior and resentful feelings among the less fortunate. * Some students inappropriately wear bold colors and daring fashion bordering on indecency. * Uniforms are inexpensive.They are usually chosen for their durability. * Students are equal with uniforms. * I think that school uniform shouldn't be banned in schools. * No, I don't think so. The reason for this is because if people wear different clothes (like some wear designer brands and others don't), it may cause bullying and discrimination. Also, schools uniforms help make students look equal which is good. Also, if you go on a school trip it's easier to recognize wh ich children belong to which school, so if they get lost someone can easily help them. * school uniforms must not be banned n the motion, should school uniforms be banned, i greatly disagree on that. That’s a very big shame on their side. School uniforms must not be banned because uniform is one of the sign which the school prepared for their students to be categorized by other peoples. We all know, that their parents are hard working for them to educate their children in school that requires uniform. we also have to think about them. Another one is, when a student’s wear their uniforms, it’s a sign of formality, because these uniforms are clothes that represent their school and success. * NONo i don't think school uniforms should be banned because some people can not afford much clothes and for students who have to where a school uniform they are lucky that they don't have i look for things to wear or worry about being teased because they don't have any new clo thes or anything. i think having a uniform is a good thing * If uniforms are forced upon students then why should the students have to pay? Going along with this idea, think of all the impoverished families out there who are spending all their money on giving their child a good education by sending them to private school, or a school that requires uniform.Do they really need their less fortunate children to be teased and bullies by the more fortunate children in school for their tattered or worn clothing that represents their parent's economic status? Uniforms help to make all the student body equal, especially in this day and age when even the youngest kids can be so spiteful and cold to their peers. * Parents Should Switch Schools If They Don't Like It Many private schools have uniform requirements and strict dress codes. If parents don't like their kids wearing uniforms, they can simply switch schools.This is America with the freedom to choose. The same is true for private school ing. No one has to attend one particular school over another. School uniforms shouldn't be banned whatsoever simply because it's a free world. * Shouldn't be banned.. When I was in school, I always thought the idea of school uniforms was silly. Now that I am older, I feel like this concept is a good idea. In public schools, there is such a wide variety of families from low income, to middle class, to wealthy. Unfortunately, in today's society, so many pay attention to their appearance.I think kids who's parents can't afford the name brand clothes begin to feel bad and have lower self esteem. If everyone has to dress the same, they have nothing to compare themselves to. * No, I believe school uniforms should not be banned because they create equality among students. I believe that school uniforms should be more widely used and not banned because it creates equality among children and takes away the status quo. By removing labels from clothing more than just the problem of inequality is prevented. It also solves many instances of bullying, parental stress, and childhood depression for starters.I believe all children deserve acceptance, and with school uniforms it gives them an advantage. Why take this advantage away? * For! * The adolescent is denied the freedom of choice which is the right of every individual. * It denies the adolescent the opportunity to use discretion, form judgements and exercise responsibility. * It is a form of regimentation not in accordance with democratic ideals. * Uniforms can be restrictive in times of climatic variation. * uniforms are horrible and expensive. I think they should be because uniforms are horrible and expensive.Uniforms are horrible. They are bland. Every day it's the same thing. Schools could have allocated days for uniforms. For example, going on an excursion, a check-up day or even a formal assembly. School uniforms usually cost a lot of money. A school jumper is probably one hundred dollars and the whole uniform is likely to be more than five hundred dollars. Children don't have to wear expensive clothes. If they're getting teased by their friends because they're not wearing designer clothes, they are not true friends and they can easily move away from the group.All my t-shirts are less than thirty dollars most of the time because I don't have a lot of money. I don't see anyone teasing me. * * They cause lack of expression in students. Do you express you through the way you dress? Most students do that's the only way some students can. Other students from other schools make fun of the school uniforms that some schools have. Witch causes trouble adjusting to being an adult. Witch affects a student or adult to stutter in day to day task * We all have a right to wear random clothing. Casual clothing expresses someone's fashion on how they can be.If you wear school uniform, you have to pay for it. It may cost about $20 or more then you may grow out of that size and you have to pay for it again and again. What a waste of money when you could be spending that money for something in great need, don't you agree with me? So that's why I think wearing school uniforms should be banned. * * We all have a right to wear random clothing. We all have a right to wear random clothing. Casual clothing expresses someone's fashion on how they can be. If you wear school uniform, you have to pay for it.It may cost about $20 or more then you may grow out of that size and you have to pay for it again and again. What a waste of money when you could be spending that money for something in great need, don't you agree with me? So that's why I think wearing school uniforms should be banned. * School Uniforms Send the Wrong Message While uniforms undeniable create some equality among students, they also give pupils the wrong idea. Uniforms are teaching kids that whenever they face diversity, the solution is to simply make everyone the same.This is a problem, especially since some differences, like rac e or size, cannot be changed. School uniforms should be banned because they give students the wrong idea. * * School uniform should not be compulsory at public schools Because people go to public schools to save money and uniforms and saving money it just puts you in dept for something you don't want to wear, which is a BIIIIIGGGG waste of money for something they don't enjoy wearing or look good in also some teachers don't like the uniform * * The belief that school uniforms give a sense of equality among students is only true to a certain extent.First, it only gives equality to students who are studying in the same school. Based on my personal experience, there is no equality at all when students from many different schools are gathered in one place. When this happens, one could see a lot of differences. Some are wearing the uniform of an obscure school, some are wearing the uniform of an average school, while some others are wearing the uniform of an elite school. By looking at t his alone, we do not need to be a neurosurgeon to see that equality is absent here. Biasness may even occur.People will certainly have better impressions towards those from elite schools. If those students are gathered in the room when they are wearing their own clothes, there won't be any difference as nobody knows where each one of them is studying. Therefore, impressions won't be formed based on the color of their uniforms anymore. Some students who are not in elite schools may even feel down when wearing the uniform, while some students in elite schools wear their uniform so proudly that they even wear it on public holidays. I have seen people from elite schools who are wearing their uniform on a Sunday) Also, school uniform won't be so effective in bridging the gap between the affluent students and the poorer students. There are other factors that have to be considered. For example, some students may bring expensive laptop computers to school to aid in their studies while some students are not even able to purchase a textbook. We could see the difference in them even though they are all wearing the same school uniform. *