Evolution of Microprocessor

American University CSIS 550 History of Computing Professor Tim Bergin Technology Research Paper: Microprocessors Beatrice A. Muganda AU ID: 0719604 May 3, 2001 -2- EVOLUTION OF THE MICROPROCESSOR INTRODUCTION The Collegiate Webster dictionary describes microprocessor as a computer processor contained on an integrated-circuit chip. In the mid-seventies, a microprocessor was defined as a central processing unit (CPU) realized on a LSI (large-scale integration) chip, operating at a clock frequency of 1 to 5 MHz and constituting an 8-bit system (Heffer, 1986).It was a single component having the ability to perform a wide variety of different functions. Because of their relatively low cost and small size, the microprocessors permitted the use of digital computers in many areas where the use of the preceding mainframe—and even minicomputers— would not be practical and affordable (Computer, 1996). Many non-technical people associate microprocessors with only PCs yet there are thousands of appliances that have a microprocessor embedded in them— telephone, dishwasher, microwave, clock radio, etc. In these items, the microprocessor acts primarily as a controller and may not be known to the user.The Breakthrough in Microprocessors The switching units in computers that were used in the early 1940s were the mechanical relays. These were devices that opened and closed as they did the calculations. Such mechanical relays were used in Zuse’s machines of the 1930s. -3- Come the 1950s, and the vacuum tubes took over. The Atanasoff-Berry Computer (ABC) used vacuum tubes as its switching units rather than relays. The switch from mechanical relay to vacuum tubes was an important technological advance as vacuum tubes could perform calculations considerably faster and more efficient than relay machines.However, this technological advance was short-lived because the tubes could not be made smaller than they were being made and had to be placed close to eac h other because they generated heat (Freiberger and Swaine, 1984). Then came the transistor which was acknowledged as a revolutionary development. In â€Å"Fire in the Valley†, the authors describe the transistor as a device which was the result of a series of developments in the applications of physics. The transistor changed the computer from a giant electronic brain to a commodity like a TV set.This innovation was awarded to three scientists: John Bardeen, Walter Brattain, and William Shockley. As a result of the technological breakthrough of transistors, the introduction of minicomputers of the 1960s and the personal computer revolution of the 1970s was made possible. However, researchers did not stop at transistors. They wanted a device that could perform more complex tasks—a device that could integrate a number of transistors into a more complex circuit. Hence, the terminology, integrated circuits or ICs.Because physically they were tiny chips of silicon, they ca me to be also referred to as chips. Initially, the demand for ICs was typically the military and aerospace -4- industries which were great users of computers and who were the only industries that could afford computers (Freiberger and Swaine, 1984). Later, Marcian â€Å"Ted† Hoff, an engineer at Intel, developed a sophisticated chip. This chip could extract data from its memory and interpret the data as an instruction. The term that evolved to describe such a device was â€Å"microprocessor†.Therefore, the term â€Å"microprocessor† first came into use at Intel in 1972 (Noyce, 1981). A microprocessor was nothing more than an extension of the arithmetic and logic IC chips corporating more functions into one chip (Freiberger and Swaine, 1984). Today, the term still refers to an LSI single-chip processor capable of carrying out many of the basic operations of a digital computer. Infact, the microprocessors of the late eighties and early nineties are full-sclae 32-b it and 32-bit address systems, operating at clock cycles of 25 to 50 MHz (Heffer, 1986).What led to the development of microprocessors? As stated above, microprocessors essentially evolved from mechanical relays to integrated circuits. It is important to illustrate here what aspects of the computing industry led to the development of microprocessors. (1) Digital computer technology In the History of Computing class, we studied, throughout the semester, how the computer industry learned how to make large, complex digital computers capable of processing more data and also how to build and use smaller, less -5- expensive computers.The digital computer technology had been growing steadily since the late 1940s. (2) Semiconductors Like the digital computer technology, semiconductors had also been growing steadily since the invention of the transistor in the late 1940s. The 1960s saw the integrated circuit develop from just a few transistors to many complicated tasks, all of the same chip. (3) The calculator industry It appears as if this industry grew overnight during the 1970s from the simplest of four-function calculators to very complex programmable scientific and financial machines.From all this, one idea became obvious—if there was an inexpensive digital computer, there would be no need to keep designing different, specialized integrated circuits. The inexpensive digital computer could simply be reprogrammed to perform whatever was the latest brainstorm, and there would be the new product (Freiberger and Swaine, 1984). The development of microprocessors can be attributed to when, in the early 1970s, digital computers and integrated circuits reached the required levels of capability.However, the early microprocessor did not meet all the goals: it was too expensive for many applications, especially those in the consumer market, and it -6- could not hold enough information to perform many of the tasks being handled by the minicomputers of that time. How a m icroprocessor works According to Krutz (1980), a microprocessor executes a collection of machine instructions that tell the processor what to do. Based on the instructions, a microprocessor does three basic things: †¢ Using its ALU (Arithmetic/Logic Unit), a microprocessor can perform mathematical operations like addition, subtraction, multiplication and division.Modern microprocessors contain complete floating point processors that can perform extremely sophisticated operations on large floating point numbers. †¢ A microprocessor can move data from one memory location to another. A microprocessor can make decisions and jump to a new set of instructions based on those decisions. There may be very sophisticated things that a microprocessor does, but those †¢ are its three basic activities. Put simply, it fetches instructions from memory, interprets (decodes) them, and then executes whatever functions the instructions direct.For example, if the microprocessor is capable of 256 different operations, there must be 256 different instruction words. When fetched, each instruction word is interpreted differently than any of the other 255. Each type of microprocessor has a unique instruction set (Short, 1987). -7- Archictecture of a microprocessor This is about as simple as a microprocessor gets. It has the following characteristics: †¢ an address bus (that may be 8, 16 or 32 bits wide) that sends an address to memory; †¢ a data bus (that may be 8, 16 or 32 bits wide) that can send data to memory or receive data from memory; †¢ RD (Read) and WR (Write) line to tell the memory whether it wants to set or get the addressed location; †¢ a clock line that lets a clock pulse sequence the processor; and a reset line that resets the program counter to zero (or whatever) and restarts execution. †¢ A typical microprocessor, therefore, consists of: logical components—enable it to function as a programmable logic processor; program co unter, stack, and instruction register—provide for the management of a program; the ALU—provide for the manipulation of data; and a decoder & timing and control unit—specify and coordinate the operation of other components.The connection of the microprocessors to other units—memory and I/O devices—is done with the Address, Data, and control buses. -8- Generation of microprocessors Microprocessors were categorized into five generations: first, second, third, fourth, and fifth generations. Their characteristics are described below: First-generation The microprocessors that were introduced in 1971 to 1972 were referred to as the first generation systems. First-generation microprocessors processed their instructions serially—they fetched the instruction, decoded it, then executed it.When an instruction was completed, the microprocessor updated the instruction pointer and fetched the next instruction, performing this sequential drill for each ins truction in turn. Second generation By the late 1970s (specifically 1973), enough transistors were available on the IC to usher in the second generation of microprocessor sophistication: 16-bit arithmetic and pipelined instruction processing. Motorola’s MC68000 microprocessor, introduced in 1979, is an example. Another example is Intel’s 8080. This generation is defined by overlapped fetch, decode, and execute steps (Computer 1996).As the first instruction is processed in the execution unit, the second instruction is decoded and the third instruction is fetched. The distinction between the first and second generation devices was primarily the use of newer semiconductor technology to fabricate the chips. This new -9- technology resulted in a five-fold increase in instruction, execution, speed, and higher chip densities. Third generation The third generation, introduced in 1978, was represented by Intel’s 8086 and the Zilog Z8000, which were 16-bit processors with minicomputer-like performance.The third generation came about as IC transistor counts approached 250,000. Motorola’s MC68020, for example, incorporated an on-chip cache for the first time and the depth of the pipeline increased to five or more stages. This generation of microprocessors was different from the previous ones in that all major workstation manufacturers began developing their own RISC-based microprocessor architectures (Computer, 1996). Fourth generation As the workstation companies converted from commercial microprocessors to in-house designs, microprocessors entered their fourth generation with designs surpassing a million transistors.Leading-edge microprocessors such as Intel’s 80960CA and Motorola’s 88100 could issue and retire more than one instruction per clock cycle (Computer, 1996). Fifth generation Microprocessors in their fifth generation, employed decoupled super scalar processing, and their design soon surpassed 10 million transistors. I n this – 10 – generation, PCs are a low-margin, high-volume-business dominated by a single microprocessor (Computer, 1996). Companies associated with microprocessorsOverall, Intel Corporation dominated the microprocessor area even though other companies like Texas Instruments, Motorola, etc also introduced some microprocessors. Listed below are the microprocessors that each company created. (A) Intel As indicated previously, Intel Corporation dominated the microprocessor technology and is generally acknowledged as the company that introduced the microprocessor successfully into the market. Its first microprocessor was the 4004, in 1971. The 4004 took the integrated circuit one step further by ocating all the components of a computer (CPU, memory and input and output controls) on a minuscule chip. It evolved from a development effort for a calculator chip set. Previously, the IC had had to be manufactured to fit a special purpose, now only one microprocessor could be ma nufactured and then programmed to meet any number of demands. The 4004 microprocessor was the central component in a four-chip set, called the 4004 Family: 4001 – 2,048-bit ROM, a 4002 – 320-bit RAM, and a 4003 – 10-bit I/O shift register. The 4004 had 46 instructions, using only 2,300 transistors in a 16-pin DIP.It ran at a clock rate of – 11 – 740kHz (eight clock cycles per CPU cycle of 10. 8 microseconds)—the original goal was 1MHz, to allow it to compute BCD arithmetic as fast (per digit) as a 1960's era IBM 1620 (Computer, 1996). Following in 1972 was the 4040 which was an enhanced version of the 4004, with an additional 14 instructions, 8K program space, and interrupt abilities (including shadows of the first 8 registers). In the same year, the 8008 was introduced. It had a 14-bit PC. The 8008 was intended as a terminal controller and was quite similar to the 4040.The 8008 increased the 4004’s word length from four to eight bits , and doubled the volume of information that could be processed (Heath, 1991). In April 1974, 8080, the successor to 8008 was introduced. It was the first device with the speed and power to make the microprocessor an important tool for the designer. It quickly became accepted as the standard 8-bit machine. It was the first Intel microprocessor announced before it was actually available. It represented such an improvement over existing designs that the company wanted to give customers adequate lead time to design the part into new products.The use of 8080 in personal computers and small business computers was initiated in 1975 by MITS’s Altair microcomputer. A kit selling for $395 enabled many individuals to have computers in their own homes (Computer, 1996). Following closely, in 1976, was 8048, the first 8-bit single-chip microcomputer. It was also designed as a microcontroller rather than a microprocessor—low cost and small size was the main goal. For this reason, da ta was stored on-chip, while program code was external. The 8048 was eventually replaced by the very popular but bizarre 8051 and 8052 – 12 – (available with on-chip program ROMs).While the 8048 used 1-byte instructions, the 8051 had a more flexible 2-byte instruction set, eight 8-bit registers plus an accumulator A. Data space was 128 bytes and could be accessed directly or indirectly by a register, plus another 128 above that in the 8052 which could only be accessed indirectly (usually for a stack) (Computer, 1996). In 1978, Intel introduced its high-performance, 16-bit MOS processor—the 8086. This microprocessor offered power, speed, and features far beyond the second-generation machines of the mid-70’s. It is said that the personal computer revolution did not really start until the 8088 processor was created.This chip became the most ubiquitous in the computer industry when IBM chose it for its first PC (Frieberger and Swaine, 1984 ). In 1982, the 802 86 (also known as 286) was next and was the first Intel processor that could run all the software written for its predecessor, the 8088. Many novices were introduced to desktop computing with a â€Å"286 machine† and it became the dominant chip of its time. It contained 130,000 transistors. In 1985, the first multi-tasking chip, the 386 (80386) was created. This multitasking ability allowed Windows to do more than one function at a time.This 32-bit microprocessor was designed for applications requiring high CPU performance. In addition to providing access to the 32-bit world, the 80386 addressed 2 other important issues: it provided system-level support to systems designers, and it was object-code compatible with the entire family of 8086 microprocessors (Computer, 1996 ). The 80386 was made up of 6 functional units: (i) execution unit (ii) segment unit (iii) page unit (iv) decode unit (v) bus unit and (vi) prefetch unit. The 80386 had – 13 – 34 registers divide d into such categories as general-purpose registers, debug registers, and test registers.It had 275,000 transistors (Noyce, 1981). The 486 (80486) generation of chips really advanced the point-and-click revolution. It was also the first chip to offer a built-in math coprocessor, which gave the central processor the ability to do complex math calculations. The 486 had more than a million transistors. In 1993, when Intel lost a bid to trademark the 586, to protect its brand from being copied by other companies, it coined the name Pentium for its next generation of chips and there began the Pentium series—Pentium Classic, Pentium II, III and currently, 4. (B)Motorola The MC68000 was the first 32-bit microprocessor introduced by Motorola in early 1980s. This was followed by higher levels of functionality on the microprocessor chip in the MC68000 series. For example, MC68020, introduced later, had 3 times as many transistors, was about three times as big, and was significantly fas ter. Motorola 68000 was one of the second generation systems that was developed in 1973. It was known for its graphics capabilities. The Motorola 88000 (originally named the 78000) is a 32-bit processor, one of the first load-store CPUs based on a Harvard Architecture (Noyce, 1981). C) Digital Equipment Corporation (DEC) – 14 – In March 1974, Digital Equipment Corporation (DEC) announced it would offer a series of microprocessor modules built around the Intel 8008. (D) Texas Instruments (TI) A precursor to these microprocessors was the 16-bit Texas Instruments 1900 microprocessor which was introduced in 1976. The Texas Instruments TMS370 is similar to the 8051, another of TI’s creations. The only difference between the two was the addition of a B accumulator and some 16-bit support. Microprocessors TodayTechnology has been changing at a rapid pace. Everyday a new product is made to make life a little easier. The computer plays a major role in the lives of most p eople. It allows a person to do practically anything. The Internet enables the user to gain more knowledge at a much faster pace compared to researching through books. The portion of the computer that allows it to do more work than a simple computer is the microprocessor. Microprocessor has brought electronics into a new era and caused component manufacturers and end-users to rethink the role of the computer.What was once a giant machine attended by specialists in a room of its own is now a tiny device conveniently transparent to users of automobile, games, instruments, office equipment, and a large array of other products. – 15 – From their humble beginnings 25 years ago, microprocessors have proliferated into an astounding range of chips, powering devices ranging from telephones to supercomputers (PC Magazine, 1996). Today, microprocessors for personal computers get widespread attention—and have enabled Intel to become the world's largest semiconductor maker.I n addition, embedded microprocessors are at the heart of a diverse range of devices that have become staples of affluent consumers worldwide. The impact of the microprocessor, however, goes far deeper than new and improved products. It is altering the structure of our society by changing how we gather and use information, how we communicate with one another, and how and where we work. Computer users want fast memory in their PCs, but most do not want to pay a premium for it. Manufacturing of microprocessors Economical manufacturing of microprocessors requires mass production.Microprocessors are constructed by depositing and removing thin layers of conducting, insulating, and semiconducting materials in hundreds of separate steps. Nearly every layer must be patterned accurately into the shape of transistors and other electronic elements. Usually this is done by photolithography, which projects the pattern of the electronic circuit onto a coating that changes when exposed to light. Be cause these patterns are smaller than the shortest wavelength of visible light, short wavelength ultraviolet radiation must be used. Microprocessor features 16 – are so small and precise that a single speck of dust can destroy the microprocessor. Microprocessors are made in filtered clean rooms where the air may be a million times cleaner than in a typical home (PC World, 2000)). Performance of microprocessors The number of transistors available has a huge effect on the performance of a processor. As seen earlier, a typical instruction in a processor like an 8088 took 15 clock cycles to execute. Because of the design of the multiplier, it took approximately 80 cycles just to do one 16-bit multiplication on the 8088.With more transistors, much more powerful multipliers capable of single-cycle speeds become possible ( ). More transistors also allow a technology called pipelining. In a pipelined architecture, instruction execution overlaps. So even though it might take 5 clock c ycles to execute each instruction, there can be 5 instructions in various stages of execution simultaneously. That way it looks like one instruction completes every clock cycle (PC World, 2001). Many modern processors have multiple instruction decoders, each with its own pipeline.This allows multiple instruction streams, which means more than one instruction can complete during each clock cycle. This technique can be quite complex to implement, so it takes lots of transistors. The trend in processor design has been toward full 32-bit ALUs with fast floating point processors built in and pipelined execution with multiple instruction streams. There has also been a tendency toward special instructions (like the MMX – 17 – instructions) that make certain operations particularly efficient. There has also been the addition of hardware virtual memory support and L1 caching on the processor chip.All of these trends push up the transistor count, leading to the multi-million tra nsistor powerhouses available today. These processors can execute about one billion instructions per second! (PC World, 2000) ) With all the different types of Pentium microprocessors, what is the difference? Three basic characteristics stand out: †¢ †¢ †¢ Instruction set: The set of instructions that the microprocessor can execute. bandwidth: The number of bits processed in a single instruction. clock speed: Given in megahertz (MHz), the clock speed determines how many instructions per second the processor can execute.In addition to bandwidth and clock speed, microprocessors are classified as being either RISC (reduced instruction set computer) or CISC (complex instruction set computer). – 18 – Other uses of microprocessors There are many uses for microprocessors in the world today. Most appliances found around the house are operated by microprocessors. Most modern factories are fully automated—that means that most jobs are done by a computer. Au tomobiles, trains, subways, planes, and even taxi services require the use of many microprocessors. In short, there are microprocessors everywhere you go. Another common place to find microprocessors is a car.This is especially applicable to sports cars. There are numerous uses for a microprocessor in cars. First of all, it controls the warning LED signs. Whenever there is a problem, low oil, for example, it has detectors that tell it that the oil is below a certain amount. It then reaches over and starts blinking the LED until the problem is fixed. Another use is in the suspension system. A processor, controls the amount of pressure applied to keep the car leveled. During turns, a processor, slows down the wheels on the inner side of the curb and speeds them up on the outside to keep the speed constant and make a smooth turn.An interesting story appeared in the New York Times dated April 16 and goes to show that there’s no limit to what microprocessors can do and that resarc hers and scientists are not stopping at the current uses of microprocessors. The next time the milk is low in the refrigerator, the grocery store may deliver a new gallon before it is entirely gone. Masahiro Sone, who lives in Raleigh, N. C. , has won a patent for a refrigerator with an inventory processing system that keeps track of what is inside – 19 – and what is about to run out and can ring up the grocery store to order more (NY Times, 2001).Where is the industry of microprocessors going? Almost immediately after their introduction, microprocessors became the heart of the personal computer. Since then, the improvements have come at an amazing pace. The 4004 ran at 108 kHz—that's kilohertz, not megahertz—and processed only 4 bits of data at a time. Today's microprocessors and the computers that run on them are thousands of times faster. Effectively, they've come pretty close to fulfilling Moore's Law (named after Intel cofounder Gordon Moore), which states that the number of transistors on a chip will double every 18 months or so.Performance has increased at nearly the same rate (PC Magazine, 1998 ). Can the pace continue? Well, nothing can increase forever. But according to Gerry Parker, Intel's executive vice president in charge of manufacturing, â€Å"we are far from the end of the line in terms of microprocessor performance. In fact, we're constantly seeing new advances in technology, one example being new forms of lithography that let designers position electronic components closer and closer together on their chips. Processors are created now using a 0. 35-micron process.But next year we'll see processors created at 0. 25 microns, with 0. 18 and 0. 13 microns to be introduced in the years to come. † (PC Magainze, 1998) However, it's not just improvements in lithography and density that can boost performance. Designers can create microprocessors with more layers of metal tying – 20 – together the trans istors and other circuit elements. The more layers, the more compact the design. But these ultracompact microprocessors are also harder to manufacture and validate. New chip designs take up less space, resulting in more chips per wafer.The original Pentium (60/66 MHz) was 294 square millimeters, then it was 164 square millimeters (75/90/100 MHz), and now it's 91 square millimeters (133- to 200-MHz versions) (PC Magazine, 1998). When will all this end? Interestingly, it may not be the natural limits of technology that will eventually refute Moore's Law. Instead, it's more likely to be the cost of each successive generation. Every new level of advancement costs more as making microprocessor development is a hugely capital-intensive business. Currently, a fabrication plant with the capacity to create about 40,000 wafers a month costs some $2 billion.And the rapid pace of innovations means equipment can become obsolete in just a few years. Still, there are ways of cutting some costs, su ch as converting from today's 8-inch silicon wafers to larger, 300-mm (roughly 12inch) wafers, which can produce 2. 3 times as many chips per wafer as those now in use. Moving to 300-mm wafers will cost Intel about $500 million in initial capital. Still, nothing lasts forever. As Parker notes, â€Å"the PC industry is built on the assumption that we can get more and more out of the PC with each generation, keep costs in check, and continue adding more value.We will run out of money before we run out of technology. When we can't hold costs down anymore, then it will be a different business† (PC Magazine, 1998). At the beginning of last year, the buzz was about PlayStation 2 and the Emotion Engine processor that would run it. Developed by Sony and Toshiba, – 21 – experts predicted the high-tech processor would offer unprecedented gaming power and more importantly, could provide the processing power for the PlayStation 2 to challenge cheap PCs as the entry-level de vice of choice for home access to the Web.PlayStation2 is equipped with the 295MHz MIPS-based Emotion engine, Sony's own CPU designed with Toshiba Corp. , a 147MHz graphics processor that renders 75 million pixels per second, a DVD player, an IEEE 1394 serial connection, and two USB ports. Sony will use DVD discs for game titles and gives consumers the option of using the product for gaming, DVD movie playing and eventually Web surfing (PC World, 2000). Soon, instead of catching up on the news via radio or a newspaper on the way to work, commuters may soon be watching it on a handheld computer or cell phone.Early January this year, Toshiba America Electronic Components announced its TC35273XB chip. The chip has 12Mb of integrated memory and an encoder and decoder for MPEG-4, an audio-video compression standard. According to Toshiba, the integrated memory is what sets this chip apart from others. With integrated memory, the chip consumes less power, making it a good fit for portable gadgets. This chip is designed to specifically address the issues of battery life which can be very short with portable devices.The chip will have a RISC processor at its core and running at a clock speed of 70MHz (PC World, 2000). Toshiba anticipates that samples of this chip will be released to manufacturers in the second quarter, and mass production will follow in the third quarter. Shortly after this release, new handheld computers and cell phones using the chip and offering streaming media will be expected (CNET news). – 22 – It is reported in CNET news, that in February this year, IBM started a program to use the Internet to speed custom-chip design, bolstering its unit that makes semiconductors for other companies.IBM, one of the biggest makers of application-specific chips, would set up a system so that chip designs are placed in a secure environment on the Web, where a customer's design team and IBM engineers would collaborate on the blueprints and make change s in real time. Designing custom chips, which are used to provide unique features that standard processors don't offer, requires time-consuming exchanges of details between the clients that provide a basic framework and the IBM employees who do the back-end work. Using the Internet will speed the process and make plans more accurate.IBM figures that since their customers ask for better turnaround time and better customer satisfaction, this would be one way to tackle this. As a pilot program, this service was to be offered to a set of particular, selected customers initially, and then would include customers who design the so-called system-on-a-chip devices that combine several functions on one chip (CNET news). A new microprocessor unveiled in February 2000 by Japan’s NEC, offers high-capacity performance while only consuming small amounts of power, making it ideal for use in mobile devices.This prototype could serve as the model for future mobile processors. The MP98 process or contains four microprocessors on the same chip that work together in such a way that they can be switched on and off depending on the job in hand. For example, a single processor can be used to handle easy jobs, such as data entry, through a keypad, while more can be brought – 23 – online as the task demands, with all four working on tasks such as processing video. This gives designers of portable devices the best of both worlds—low power consumption and high capacity (PC World, 2000).However, it should be noted that the idea of putting several processors together on a single chip is not new as both IBM and Sun Microsystems have developed similar devices. The only difference is that MP98 is the first working example of a â€Å"fine grain† device that offers better performance. Commercial products based on this technology are likely to be seen around 2003 (PCWorld, 2000). In PCWorld, it was reported that, last September, a Japanese dentist received U. S . and Japanese patents for a method of planting a microchip into a false tooth.The one-chip microprocessor embedded in a plate denture can be detected using a radio transmitter-receiver, allowing its owner to be identified. This is useful in senior citizen’s home where all dentures are usually collected from their owners after meals, washed together and returned. In such a case, it is important to identify all the dentures to give back to their correct owners without any mistake (PC World, 2000). In March this year, Advanced Micro Devices (AMD) launched its 1. 3-GHz Athlon processor. Tests on this processor indicated that its speed surpassed Intel’s 1. GHz Pentium 4. The Athlon processor has a 266-MHz front side bus that works with systems that use 266-MHz memory. The price starts from $2,988 (PCWorld, 2001). Intel’s Pentium 4, which was launched in late 2000, is designed to provide blazing speed—especially in handling multimedia content. Dubbed Intel Net Burst – 24 – Micro-architecture, it is designed to speed up applications that send data in bursts, such as screaming media, MP3 playback, and video compression. Even before the dust had settled on NetBurst, Intel released its much awaited 1. GHz Pentium 4 processor on Monday, April 23. The is said to be the company’s highest-performance microprocessor for desktops. Currently priced at $325 in 1,000 unit quantities. The vice president and general manager of Intel was quoted as saying, â€Å"the Pentium 4 processor is destined to become the center of the digital world. Whether encoding video and MP3 files, doing financial analysis, or experiencing the latest internet technologies—the Pentium 4 processor is designed to meet the needs of all users† (PC World, 2001).Gordon Moore, co-founder of Intel, over thirty years ago, announced that the number of transistors that can be placed on a silicon would double every two years. Intel maintains that it has r emained true since the release of its first processors, the 4004, in 1971. The competition to determine who has produced the fastest and smallest processor between Intel and AMD continues. Infact, Intel Corp. predicts that PC chips will climb to more than 10GHz from today's 1GHz standard by the year 2011. However, researchers are paying increasing attention to software.That's because new generations of software, especially computing-intensive user interfaces, will call for processors with expanded capabilities and performance.

Arms Trade

â€Å"I have seen how easy it is for nuclear contamination to occur, and how hard it is to clean it up†¦. Do nations possess nuclear, chemical and biological weapons because of fear of attack from some other nation, or is it because without them the strong cannot exploit the weak? † Andreas T. The arms trade is a major cause of human rights abuses. Some governments spend more on military expenses than on social development, communications infrastructure and health combined. While every nation has the right and the need to ensure its security, in these changing times, arms requirements and procurements may need to change too. Each year, around $45-60 billion worth of arms sales are agreed. Some two-thirds of sales are made to developing countries. The 5 permanent members of the UN Security Council (US, Russia, France, United Kingdom and China), together with Germany and Italy account for over 80% of the arms sold between 2001 and 2008. Some of the arms sold go to regimes where human rights violations will occur. Corruption often accompanies arms sales due to the large sums of money involved. World military spending had reduced since the Cold War ended, but a few nations such as the US retain high level spending. In recent years, global military expenditure has increased again and is now comparable to Cold War levels again. Recent data shows global spending at over $1. 4 trillion, annually (or $1. 2 trillion at constant 2005 prices). The highest military spender is the US accounting for just under half of the world’s spending, more than the rest of the G7 (most economically advanced countries) combined, and more than all its potential enemies, combined.

Caricom Achievements

4th Future Diplomats Essay CompetitionThe Caribbean Community (CARICOM) is celebrating 40 years of integration in 2013. Discuss the achievements of CARICOM in light of the statement and make suggestions for future development.Kerri Mc NeilHappy fortieth anniversary to the Caribbean Community (CARICOM)! An establishment which has transgressed shared colonial history; propelling its fifteen member states and five associate member states to economic integration and social development. The achievements will be discussed in ascending order of importance (CDEMA, CCJ, CXC and CSME). Suggestions such as the introduction of art forms and history into the school curriculum will be elaborated on for future developmental reference. Regional leaders recognized how valuable the Caribbean is due to its rich history, which, was in itself an economic propeller and indirectly an agent of social development.Notwithstanding the divisions that came along with it. It has presented a diverse community viab le for exploration. The need for a Caribbean identity proved to be a goal worth meeting. As globalization aggressively pounced on the minds of Caribbean nationals, destabilizing the already broken cultural and economic foundation, the leaders of these Caribbean nations saw a challenge at hand and founded the CARICOM on the first of August 1973 to promote integration and unity in hopes of achieving international competitiveness and self-reliance. The survival of CARICOM for forty years is not qualified for inessential interrogation. The goal statement of the Secretariat consolidates this, â€Å"To provide dynamic leadership and service, in partnership with Community institutions and groups toward the attainment of a  viable, internationally competitive and sustainable community, with improved quality of life for all.† This is an engine for generating efficient performance from the twenty-three designated institutions of the Caribbean Community. For example, the Caribbean Exa minations Council (CXC). This institution is the functioning of the Caribbean’s educational successes. Need I expound by way of The Mighty Sparrow, â€Å" Education, education, this is the foundation. Our rising population needs sound education!† Our standing committee members could attest to that! In addition to this, there are numerous achievements of the CARICOM, however this essay chooses to focus on the important ones through the institutions under CARICOM.To begin with, the Caribbean region is prone to natural disasters. Under this observation, the Caribbean Community engaged in the implementation of the Caribbean Disaster Emergency Management Agency(CDEMA) in the late twentieth century after reports of severe change of weather patterns. There were other agencies but the region needed a regionally centralized disaster preparedness and relief agency. As such one may understand the role of the CDEMA whose prime focus is to increase the level of assistance being len t to Caribbean nations. For example, the CDEMA exercised great efficiency in responding to the 2004 disasters of Grenada and Jamaica after the much pronounced visit of Hurricane Ivan.In light of such implementations orchestrated by the CARICOM, it is clear that the life and safety of the Caribbean people are of grave importance to that bold goal of creating a Caribbean identity. Another accomplishment of the CARICOM was the introduction of an ‘assumed’ standardized justice agency. This was the Caribbean Court of Justice (CCJ), established in 2001. Whilst it followed the format of a First World nation ( European Court of Justice) it sparked major controversies as it was offset by the decision of the then Privy Council to bar capital punishment which was practiced by the supreme European nations on persons convicted of murder. This was obviously ruled out by the Privy Council . The other issue might resonate with modern times ( the storm of globalization).This issue lied within the government of Antigua and Barbuda where,  again, the Privy Council gave a radio license, ironically, to a company without the consent of the government of Antigua and Barbuda. Any vacuity of the mind should be fed as it was clear that the CARICOM wanted to reduce the influence of the European powers. However, in the act of doing this, they only managed to establish an institution in the Caribbean rather than a Caribbean institution. Not straying from the intent of this essay, the Caribbean now has in the Republic of Trinidad and Tobago, a Caribbean Court of Justice. The CARICOM fails to stop there as the Caribbean Examination Council (CXC) was implemented in 1972.This council seeks to provide nationals with opportunities and qualifications to further their primary education by way of Caribbean Secondary Education Certification (CSEC) , along with the advantage of obtaining qualifications or even scholarships to universities through the Caribbean Advanced Proficiency Exa minations (CAPE). The University of the West Indies and the University of Guyana are direct providers for the council. It is quite notable of the CARICOM to have provided its people with the equal opportunities of any given advanced region internationally; an important one being, securing and providing sound education of its members. Through the educational system we have many aspiring career persons.Their career may require them to move to another state or the successes of their business may allow them the opportunity to expand their business to other nations. Delighted to state, they can do so. However this is only in effect due to the implementation of the CARICOM Single Market and Economy which will be further discussed in the following paragraph. The CARICOM Single Market and Economy (CSME) was put into order on the first of January 2006. The aim of this institution was to increase integration among member states. They did this by removing tariffs and restrictions so that both economic and human resources could be shared to promote sustainable development. The Caribbean peoples benefitted as there was free movement of goods and services, skilled persons and capital. Now nationals have the right to work in any of the member states.Nurses, media workers, musicians,  sportsmen and women, university graduates and artistes benefit from this (CSME) as there are a greater availability of opportunities for job creation. Goods and services could now be provided across the single market where the owners would also have access to land and property under rights of establishment. This created a greater framework for competitiveness and a variation of choice for consumers. Equality to buy stocks and shares and being a part of the regional stock exchange is now possible for better investment opportunities. The CSME was, out of many, the most important achievement of the CARICOM.This gave way to consolidating the goal of self-reliance within the Caribbean region. No lo nger do nationals have to travel internationally to obtain jobs. They can stay within the region and do so gainfully. However it is optional. Business persons in the interest of creating enterprises and being investors now have the opportunity to do so as the market has widened to becoming intra-regional. From this increase in production, there are better quality goods on the market, and an increase in employment opportunities which may improve the standard of living. The CARICOM has created the Caribbean into a mecca. The Caribbean people now possess some sense of identity. However some adjustments can and should be made to improve the cooperation of the people who are indeed the prime target for such developmental changes.I propose that the Caribbean Examination Council promote raw data of history from an earlier stage to arouse the curiosity of nationals. This will, hopefully create the desire within them to want to know from where they have come with relation to where they are g oing. A sense of self-respect and responsibility to self will be awarded by those who willingly and factually grasp the understanding from such historical awakenings. Like the process of any natural cycle, with an attachment to a particular identity, preferably and hopefully the West Indian identity, more allegiance will be paid to the country of their nativity.Participating and contributing to the economic and social development of the nation  will simply be a part of the person’s natural regime ; rather than becoming mentally enslaved by foreign music and their inapplicable doctrines to Caribbean life; physically enslaved by clothing that speaks little about our native heritage and spiritually detached from the land of conception. Also the CARICOM should consider the implementation of compulsory arts in the curriculum where the art forms will be based on that particular culture. Music, dance, theatre, jewelry making, painting and photography are popular art forms used by youth today. It will assist greatly in the learning process. Furthermore, the students who perform the best will have the opportunity to be a part of an exchange program where they can go to other member states and learn about the culture of that nation.From this, we have the promotion of equality amongst nations of CARICOM in shared cultural diversity. With such activities the Caribbean culture can perforate the globe much like the Europeans and Americans. Many things have been done to create a distinction between the then society of colonialism and the modern society today and many more things can still be done. The Caribbean is of the most diverse regions in the world, attracting much attention, however the internal affairs must be efficient to maintain positive attention. To do this, a mode by which strong bonds can be developed has been created through the use of the Caribbean Community. In all our endeavors, I wish the CARICOM many more successful years with a plethora of deve lopmental introductions!

Corporations and its affect on the world Essay Example | Topics and Well Written Essays - 1500 words

Corporations and its affect on the world - Essay Example Democracy, in its turn, is an ideal medium for the development and growth of businesses and corporations. Democracy and capitalism, in this sense, are the systems that consciously and lawfully encourage and allow so-called â€Å"free market† and â€Å"market competition† where the strongest wins. The strongest now means the richest. Those, who have got their influential and powerful positions in the global marketplace, will never let anyone new in. They play in democracy and in competition. They are more likely to agree on each one’s market share, than to share the market with one more pretender to wealth. As for the overall concept of democracy, it is the system which is supposed to provide each citizen with an opportunity to influence the politics of the country and take part in the legislative practice of the state. On practice, however, we have a system which imposes the will of the elite to the general public, making people think the way they are supposed to think. With the help of the media the strong of the world can influence people’s thinking and opinions. As a result, we get a nation that is taught to believe in its government and not to question the government’s decisions. According to the research conducted by the Center on Budget and Policy Priorities (Huang and Stone), nowadays the largest income concentrates in hands of 0.1% of income receivers. Inequality between high- and middle-income Americans has been rising since 1990. The tax returns data of 1917-2004 shows a U-shaped trend in the percentage of income received by the top 10% of income recipients (Burtless and Haskins 497). In 2005 the rich got 18% of the nation’s income (Colson). Consequently, the rates of economic and, as a result, political inequality reinforce each other and compromise democracy (Jencks). Furthermore, the richest Americans not only avoid high taxation, but enjoy an enormous political influence in

SWOT Analysis Coursework Example | Topics and Well Written Essays - 250 words

SWOT Analysis - Coursework Example Walmart also has a very competitive pricing pattern (Kummer). By promoting locally produced food items, they are saving on the side of transportation and middle men and are able to place smaller orders (Kummer). Weakness The prices are not really low but the company is only creating a perception that they are low with the slogan, â€Å"always low prices† (Zenith). It has been pointed out that 80% to 85% of Wal-Mart’s items are more expensive† (Zenith). There has been allegation that the quality of goods sold at Walmart is poor and the service is also not up to the expectations of the customers (Zenith). Another bad reputation of the company has been that â€Å"Wal-mart’s buying practices injure its vendors† (Zenith). Walmart’s poor services to its workers had come under criticism many a times (Zenith). The conventional â€Å"business model and organizational rigidity† of Wal-Mart has been another weakness of this company (Zenith). Oppor tunities It has been an advantage of Walmart that, â€Å"instead of establishing stores near major urban centers where the population concentrates, Wal-Mart expands from its Arkansas base by constructing new stores that are strategically located near distribution centers and in smaller towns† (Rao, Qingyuan yue and Ingram, 7).

Euthanasia Research Paper Example | Topics and Well Written Essays - 1000 words

Euthanasia - Research Paper Example In addition, the practice would lessen the urgency to develop new medicines designed to prolong life. Those who oppose the practice on religious grounds argue that it is ‘playing God’ therefore sinful. Health care professionals cite the Hippocratic Oath which forbids them from carrying out this procedure. This paper will examine the moral and ethical concerns surrounding euthanasia, clarify the meaning of the term, present arguments for the practice and conclude with a recommendation to resolve the issue. Euthanasia describes a situation in which a terminally ill patient is administered a lethal dose of medication, is removed from a life-support system or is simply allowed to die without active participation such as by resuscitation. A doctor’s involvement in the procedure could be to either prescribe a lethal dose of drugs with the express intent of ending a life or by intravenously inserting a needle into the terminal patient who then activates a switch that adm inisters the fatal dose (Naji et al, 2005). Assisted suicide by physicians and non-physicians has been legal in Switzerland since WWII. In addition, three organizations within the country have been established to aid terminally ill patients. They provide patient counseling as well as the drugs for use in the procedure. Lethal injections, however, are not allowed. The unusual situation in Switzerland holds that assisted suicide is allowed as long as a physician is not a part of the process (Hurst & Mauron, 2003). Euthanasia has been legal in Belgium since 2002. Each case must be reviewed by two physicians before the procedure is carried out by either ingestion or injection. In The Netherlands, euthanasia has been legal for four years but has been tolerated for two decades. The guidelines for physicians handed down from the government include; â€Å"the patient must be suffering unbearably and have no hope of improvement, must ask to die and the patient must clearly understand the co ndition and prognosis (and) a second doctor must agree with the decision to help the patient die† (â€Å"The Fight†, 2004). Proponents of euthanasia are concerned with human suffering. Many diseases such as cancer cause a lingering and excruciatingly painful death. Watching a loved one as they wither away from the disease eating away at their organs is tough enough on family members, but to see them suffer even when drugs are administered is unbearable not to mention what the patient must endure. This emotionally and physically torturous situation is played out in every hospital, every day of the year but serves no purpose. To many, it is unimaginable to allow anyone, for example, a sweet old grandmother who has spent her life caring for others, to spend the last six months of their life enduring constant pain, unable to control bodily functions, convulsing, coughing, vomiting, etc. The psychological pain for both the family and patient is unimaginably horrific as well. If grandma were a dog, most all would agree that the only humane option would be to ‘put her to sleep.’ U.S. citizens are guaranteed certain rights but not the right to ‘die with dignity.’ This right is not prohibited by the Constitution but by religious zealots who evidently put the quality of life of a dog above grandma’s. Patients suffering from Alzheimer’s may not suffer physical pain but endure a different type of pain

Compare and Contrast of Administrative Law Term Paper

Compare and Contrast of Administrative Law - Term Paper Example The Congress has enacted a number of laws since the beginning of the 20th century to address the issue of bureaucracy. These prohibitions are inclusive of a 1913 repeal that sought to ban the hire of â€Å"publicity experts,† a 1951 ban on the agency spending on spending on publicity and propaganda, and a 2005 the ban on video news, with a provision that allowed the release of such videos if the source was willing to be identified as the originator. Scholars have described the evident Congress antagonism to public relations in public administration as part of an institutional planned push back by the legislature to the natural tendency of government agencies to seek autonomy. This has offered public administrators with an opportunity to mobilize support in an effort to increase autonomy of the agencies and reduction of the Congressional advantage over it (Lee, 2009). The congress in 1919 enacted a law that criminalized lobbying of the law-making agency. Funny enough, legislato rs cited the law when disagreeing on particular activities o f the agency but not a single prosecution was enacted by the by the US department of justice. The law however was revised in 2002 that decriminalized agency lobbying by the congress, but retained the provisions of engaging in such activities. Crisis Bureaucracy Bureaucratic structure is responsible for shaping the legal interpretations and regulatory decisions of agencies, offering a framework through which modern governments operate, and it is due to this reason that Policymakers fight to effect the necessary legislations. The article discusses two new issues that harbor important implications for lawyers and political scientists, which encompass how of legislative process responds during a crisis and the underlying uncertainties that surround major bureaucratic reorganizations. The result of this perspective illustrates how agencies make use of their administrative power and how they interpret their legal mandates. As cr ises enlarge opportunities for legislative action, changes in homeland security policies are mostly driven by the efforts of politicians who try to effect regulatory and administrative activities in various domains of the said sector. Changes in the nature of and scope of security policy may have adverse effects on other legal domains Coast Guards environmental regulatory functions or the application of laws in immigration departments of the country. Politicians cunningly use the occasion of legislation to force changes in other areas that have little to do with the principle issue being addressed (Cohen, et al 2006). A possible reason why the president changed his mind about the reorganization of the systems may be because he did not want to be part of the loosing side. The Administration appears to support such a move to further domestic policy priorities hat are independent of the homeland security. Such changes put the president’s legacy into question, more significantly fixing the precise extent to which the president and his top advisors knowingly planned to weaken the domestic legacy without paying attention to the corresponding homeland security benefits. Optimal Political Control of the Bureaucracy This article argues that a bureaucratic insulation degree from political control processes that is moderated by law increases rather than reduces the majority of

How does middle school approaches particularly with an visual arts Essay

How does middle school approaches particularly with an visual arts focus help to reengage kids - Essay Example teacher is in a position to help the students’ development, especially children who may be disadvantaged due to any of several causes such as those from poorer socio-economic groups, the disabled, or children from diverse cultures with communication and language difficulties. Learning and working on visual arts help disadvantaged children to overcome psychological limitations or barriers, and grow to their full potential. The middle school child from ten through fourteen years of age, is in transescence, which is a period in human development that begins with late childhood and continues through the early stages of adolescence. During this time of rapid but irregular growth, most children develop to physical maturity. In the middle school years, teachers and students are involved with each other, the curriculum meets the needs of the students’ stage of development, education is exciting and enables the students to prepare for more advanced courses that will need to be tackled in high school (Glenn, 1986: 6, 5). In the case of disadvantaged children, the opportunities for communication and self-expression are crucial in engaging them towards improvement in their self-concept and a better quality of life. The school reform movement termed as multiculturalism requires changes to some extent in the roles of art instructors for middle school children. It is important to understand culture and cultural diversity because â€Å"culture provides beliefs, values, and the patterns that give meaning and structure to life† (Ballengee-Morris & Stuhr, 2001: 6). Such an understanding allows individuals belonging to multiple social groups to function effectively in their constantly changing social and cultural environments. Since education is part of cultural experience, it does not comprise only of the various disciplines, but includes concepts of history and self-identity. For the effective development of a sense of identity, the middle school visual arts education plays

International trade Essay Example | Topics and Well Written Essays - 4000 words

International trade - Essay Example claim for the insured amount in correspondence to the losses incurred by Emma, the eventual happenings indicate that Abbe Insurers, the insurance company, have denied Emma for the payable because she has only paid 70 percentage of the total purchase amount. Subsequently, this discussion will focus on unfolding all the legal aspects regarding the terms mentioned within the Institute Cargo Clauses (A) 2009 and determining whether Emma will be liable for the insurance amount. The applicable laws in the aforesaid case scenario can be identified as the claiming policies mentioned within the Institute Cargo Clauses (A) 2009. This law was enacted as an international trade law with the prime intention of safeguarding the interests of both the insurance agencies as well as the buyers of the goods (Richards Hogg Lindley, 2009; Chuah, 2009). With reference to the referred case scenario, it is noteworthy that Institute Cargo Clauses (A) 2009 comprises of multiple sections based on the evaluation of which, the claimed amount can be ruled as deliverable or otherwise by the court. For instance, the guidelines concerning this law state that the insurance companies will have to provide a full coverage to any form of damage to the purchased or the transported goods, only if the damage conditions and the factors does not fall under the clauses 4, 5 6 and 7 (Hodges, 2013). Thus, it can be stated that if the reasons related to Emma’s loss does not coincide with the se four mentioned clauses, she will be liable for the insurance amount from Abbe Insurers. The detailed explanations of these clauses have been provided in the later sections (Richards Hogg Lindley, 2009). The mentioned terms within section 4.1 states that the insurance company will not be liable to pay the insured amount for any loss or damage to the goods that have been insured if the damage appears to have been incurred intentionally. In simple words, based on the enquiry that will be conducted by the Abbe Insurers,

A Letter to The Angel of Death Assignment Example | Topics and Well Written Essays - 500 words

A Letter to The Angel of Death - Assignment Example ever, although the above rational thinking gives me the courage to look at death in a constructive manner, I am an emotional human being who gets upset whenever you take away someone loved by me. Accordingly, I disclose below my encounters with death, which has always shaken me. He was in the hospital struggling to come out of the terminal illness that gave him lot of pain and anguish. Finally the end came. The doctor attending him asked each one of my family members to bid farewell to my grandpa. My dear angel of death, you were there ambushed in my thoughts, as I prayed to you for not snatching away my beloved grand father. However, he had to go and so he did. This emotional scene has lingered on to my memory, ever since. Many thinkers and philosophers have discussed the mystery involving process of soul leaving the body. However, this mystery could not be solved until today. I am satisfied to believe that God commands you, the Angel of Death, to take away our souls. At the same time, I wish to pray you for the following. I have witnessed people who believe that they are avoiding death by running away from you, as you keep on following them. However, I firmly believe that your appointment with them cannot be delayed even for a single second. It is all fixed, before you arrive. In the process, these people are fooling themselves by thinking they are hoodwinking you. The constant fear of death nearly kills them every moment. I have also witnessed people coming back to life after having a close encounter with death. However, I wonder if you are helping them to escape death at that precise moment. Knowing from the experience of many such people, I conclude that you did help them through such

Data Protection Act 1998 Essay Example for Free

Data Protection Act 1998 Essay During face to face and telephone conversation you should always be well mannered, presentable and speak with appropriate language and be informative to the conversation at hand. What type of questioning you as a therapist should use; You should always use open and closed questions when dealing with a client, open question e. g. what treatments have you had before. A closed question e. g. have had this treatment before. Personal behaviour; Your personal behaviour should always be professional and informative to the client’s needs so you give the best options to your client with the next professional presentation. Personal professional presentation; Your professional personal presentation should always be clean, neat and fresh smelling and meet the salons rules and regulation, because the first person the client meets and see’s is you, and you should show a good presentation because your jobs is to make the client look and feel more beautiful whilst selling products to them. Data protection and storage information; Data protection and storage of information should always be followed to the data protection act regulations, to avoid any information being found be someone inappropriate and used in a harmful way. This information should be stored away in a locked cupboard or on computer with a password. Timings and costs; Timing and costs should always be memorised and learnt by all staff members to ensure the salon runs efficiently, that the clients are well informed on procedures and prices and so that there is no dispute with the information given and that treatments won go over causing over booking of the therapist and loss of profits for the salon. How to keep payments safe and secure; Payments should be kept safe and secure in a cash register with a key or electronic lock, and only people of authority should have a copy of a copy of the keys or codes. What types of problems that may occur in the salon; Miss-informed treatment prices leading to an unhappy customer. Clients being late for appointments and being turned away or asked to wait due to time keeping the receptionist and therapist has to keep to run a smooth salon. Contra-actions due to a reaction to certain treatments leading to an unhappy client. All of these problems should be referred to the salon manager or owner to deal with, as you as the therapist have no jurisdiction here, unless you are salon manager.

The divine comedy Essay Example for Free

The divine comedy Essay One may ask whether or not the scriptwriters or directors of the movies to be mentioned in this paper were able to actually read the Divine comedy; or perhaps the depiction of Heaven, hell, and the purgatory made my Dante was simply so vivid that it has become a staple of the mainstream literary views (in all its modes). Let us begin with the scenery comparison of Heaven and hell as depicted in the â€Å"What Dreams May Come† (1998) and that of Dante’s Hell and Paradise. The protagonist of the film named Chris awoke in a garden called Summerland, which if we would view using Dante’s paradise is quite similar to the Garden of Eden portrayed in the book. In travelling to hell in order to rescue his wife, he was accompanied by a guardian angel (similar to Virgil in a loose kind of way). The parallelism is heightened when we see that the hell in the film reflects the same coldness, and eerie feeling as that of Dante’s Inferno. In terms of storyline, we ought to refer to the film entitled the Purgatory (1999), the setting is different in a sense that it was set in Wild West, and the place of judgment is a town. Those who are yet to gain entry in heaven are sent to the said town to repent their sins by changing the way they lived. They are to resist temptations as well as go to church to repent, or perhaps it was to reflect on their sins. This is similar to how Dante portrayed the souls in his purgatory. In a way that, both depictions showed experience of toiling to make amends for one’s sins, waiting for judgment to come, and the fulfillment of one’s punishment for his shortcomings in his lifetime in order to be allowed passage into paradise. Lastly, the eternal suffering of the condemned in hell is a theme of Dante’s Inferno that can be seen in the comedy Little Nicky (2000), wherein one’s sins receives the tantamount turmoil in hell. We could also take reference to the angels in the said film that implied the dominance of femininity in the gates of heaven like that of Dante’s Paradise i. e. Beatrice et al. Reference: Dante Alghieri, The Divine Comedy: Inferno; Purgatorio; Paradiso, One Vol. Ed. Everyman’s Library, (1995).

Literature Review On Clay Bricks Environmental Sciences Essay

Literature Review On Clay Bricks Environmental Sciences Essay Brick is a core material that is commonly used to build the wall of a building. Clay bricks are the most common brick type. It is made from sand and clay and uniformly burnt at temperatures between 800 °C and 1200 °C. Surface finishes are sometimes applied, e.g. glazed bricks. Glazed bricks are still being produced in large quantity and can be obtained from major English brick manufacturers and suppliers. Calcium Silicate bricks is manufactured from sand-lime (calcium silicate). The bricks are pressed under great pressure and steamed in an autoclave. The bricks are smooth, fine textured and light in colour. The colour of the brick is produced from material source, composition and firing temperature. The size of bricks over time has changed considerably. Some early medieval bricks were 13 inches by 6 inches by 2 inches. By the late 15th century a brick 9.5 inches by 4.5 inches by 2 inches became the norm and a charter in 1571 stipulated bricks by the measurement of 9 inches by 4.5 inches by 2.25 inches. By the 18th century, 8.25 inches by 4 inches by 2.5 inches brick was introduced. Modern bricks are 8.5 inches by 4 inches by 2.5 inches which is following metrication translated to 215mm by 102.5mm by 65mm. Modern bricks are the bricks that are most used in buildings nowadays. 2.1.2 Defect of Size Oversized bricks are caused by poor material selection and preparation or underfiring. Undersized bricks are caused mainly by poor material preparation, faulty moulds and overfiring. 2.1.3 Defect of Shape There are many grounds which contribute to defects in shape. These are including poor preparation of moulds or moulding technique, faults in stacking, rough handling and uneven drying. If the bricks are considerably over burnt, incipient fusion takes place and the bricks, called burrs, will come out of the kiln or clamp and get stuck together. Burrs are suitable only for hardcore purposes. 2.1.4 Defects of Body Faults in the raw material can give rise to defects such as cracking, bloating and laminations. Cracking and warping of bricks, causing incipient weakness, may be due to exposure of green bricks to direct sunlight or rapid drying winds. Similar effects will be produced by putting green bricks into the kiln too soon. Large cracks maybe caused by rain getting onto hot bricks. 2.1.5 Defect of Appearance These defects are caused primarily by faulty wires in the case of wire-cut bricks. Dark spots are caused by the presence of unevenly distributed iron sulphide in the clay. 2.2 Types of Brickwork Defects 2.2.1 Introduction: Most parts of a building are built using bricks. Nowadays, brickwork defects are commonly found in buildings. This problem is getting more serious as days go by. Brickwork defects may cause a lot of problems to the occupants. The main problem encountered in building with traditional outside bearing wall of brickwork and concrete inside bearing structure is caused by differences in the temperature and moisture-induced movement. Cracks may be discovered in walls and solutions have to be found to alleviate this problem. (Verhoef, 2001) Brickwork defect which occurs in buildings has a variety of reasons. This is perhaps not surprising when one considers the wide range of different bricks and techniques in the construction of building, differences in the construction sites and the varied occupational or owner usage of the completed building. Brickwork will deteriorate and decay if not properly maintained. Such deterioration can be caused by a number of factors and can take various forms. The main signs that the brickwork is afflicted are surface growth and staining, efflorescence, loosed brick becoming dislodged, cracks appear through the bricks or mortar and etc. (Moses Jenkins, 2007) In this sub chapter, the different types of the brickwork defect will be determined. This chapter gives an overview of various types of brickwork defects and understanding the brickwork defects. By identifying the different types of the brickwork defects, it will be easy for the occupants or owners to find out the causes of the defects and subsequently take the suitable remedy methods to address the problem. 2.2.2 Brick Wall Settlement Any movement in a structural  brick wall will risk having the bond courses in the wall broken. Any movement in a  brick veneer wall which has broken or loosened the connections between the veneers to the underlying structure is potentially dangerous and risk collapsing the masonry. 2.2.3 Bulging Brick Wall This is likely to be a bond-brick or bond-course failure. This defect is potentially extremely dangerous and immediate action must be taken. If not, it will cause the building to suddenly collapse. 2.2.4 Cracks and Bulges in Brick Walls Frost and earth loading can push a below-grade brick foundation wall inwards. The wall is often bulged inwards as well as showing horizontal and step cracking and loose bricks will surface over the bulged area. The damage occurs from slightly above ground level to roughly the frost line. 2.2.5 Cracks and Loose Bricks Normally, crack and loose bricks are caused by frost, settlement, expansion, diagonal and stair-stepped. These defects often happen at building corners where the roof spillage is concentrated. 2.2.6 Loose Bricks and Missing or Lost Mortar This is the movement where the mortar is severely washed-out by roof spillage or other water movement against the foundation. Loose and lost bricks may also occur where wood blocks, originally set into a wall to permit nailing of interior components, is damaged by insects or decay. Similarly, if the wood joists are damaged and bent excessively or collapsed (insect damage, rot, fire), the collapsing joist can, as its in-wall end moves, damage the foundation or building wall. Fire cuts on wood joists in brick walls were intended to minimize this damage source by angling the end of the joist where it was set into the wall pocket. 2.2.7 Spalling Bricks Spalling is caused by water and frost, such as water leaking into a brick structure at any entry point: a crack, a brick which has lost its hard surface, or at openings by window and door penetrations. It is best to also beware of caulking bricks. 2.2.8 Exfoliating-Rust Damage to Bricks Masonry wall will have these defects when brick walls have been improperly caulked where caulking should have been omitted. The most common example of this defect is the damage that occurs to a brick wall when a steel lintel over a window or door is caulked tightly between the brick and the steel. Moisture penetrating the brick wall through cracks or mortar joints is trapped around the steel lintel. Rust developing on steel lintels has tremendous lifting power as the rusting exfoliating metal expands, sufficient to crack and damage bricks around the lintel. Improper Repair Mortar  on Brickwork During repair works, tuck pointing or re-pointing bricks can cause surface spalling of bricks if the mason uses a too hard mortar with high portland content or mortar on soft bricks in a climate exposed to freezing weather. The high portland content means that the mortar will be not only harder, but more waterproof than the surrounding bricks. Water trapped around the hard mortar can freeze leading to surface spalling of the bricks. This is particularly likely to be seen when a wall has been tuck pointed using hard high-portland mortar where originally a soft high-lime mortar was used and where the original bricks were soft. Salts on Brickwork Salts are a major cause of deterioration. Salt can enter bricks through contaminated water ingress. In coastal areas, salt can come from the sea and, in winter, the nearby application of road salt is a constant threat. Salt is damaging because it creates a steady expansion of crystals within the bricks. This can eventually force the structure of the brick apart. The source of salt can occur from within the bricks themselves or from the application of contaminated mortars or renders. Brick lined chimney flues are also vulnerable as sulphates can be introduced when flu gasses condense. This is a common defect where a chimney has been sealed without adequate ventilation. 2.2.11 Efflorescence on brickwork Efflorescence appears as a white powdery deposit on the brick. It is a phenomenon that soluble salt dissolved in water are carried, deposited and gradually accumulated on brick surfaces to form an unsightly scum. Without water, efflorescence cannot occur. The soluble salts may be originated from the raw material of bricks. But in most cases, efflorescence is caused by salts from the external sources such as ground water, contaminated atmosphere, mortar ingredients and other materials in contacts with the bricks. To minimize the risk, (it can never be completely avoided in brickwork exposed to weathering) the building detail should be designed, as far as is possible, to avoid saturation. In other words, good overhangs, copings and sills with drips, need to be considered. Efflorescence can be helped on its way by sponging down the wall with clean water (avoiding substantial wetting) or dry brushing with soft brushes. Any other treatment should be avoided as it may disfigure the bricks.    2.2.12 Thermal Movement on Brickwork Every materials expand or contracts as the temperature of the material changes, typically expanding as its temperature increases and contracting as its temperature decreases. Different materials expand and contract at different rates when they undergo similar changes in their temperatures. Brick veneer can expand and contract approximately. When determining the expansion or contraction of a brick veneer, it is important to remember the effects of the sun on materials. The energy from the suns rays raises the temperature of a material well above the air temperature. On a day when the air temperature is 32 ° F, the energy from the sun can raise a walls temperature to above 100 ° F. 2.2.12.1 Thermal expansion failures in Structural or Veneer Brick Walls A separate factor that can cause very large movements and extensive damage to brick structures or brick veneer walls is the thermal expansion which occurs across a long or tall brick wall when that wall is heated by intense sun exposure. The photographs show significant thermal expansion damage in a long brick structure. Significant breaks and gaps  at vertical brick mortar joints due to thermal expansion and perhaps some frost and water damage. Figure1: Significant breaks in mortar Horizontal sliding breaks  in brick mortar joints,  exposing reinforcing wire to rust, exfoliation, and additional damage from those forces as the exfoliating wire produced still more pressure on the mortar joint. Figure2: Horizontal breaks in mortar Step cracking  following mortar joints near the building corners and where the wall movement was resisted by first story intersecting brick walls abutting at right angles the middle section of the long brick wall. Figure3: Step cracking in mortar Cracks and broken bricks at the intersections of brick walls and openings. Figure 4: Cracks and broken bricks (InspectApedia, 2007) 2.2.13 Moisture Movement on Brickwork Moisture affects all porous masonry materials, including bricks, mortars and concrete masonry units but in very different ways. These effects must be considered when a combination of these materials is used, such as when bricks rest on a concrete foundation, brick veneer units are used with block back up, and when brick and architectural concrete products are used in the same Wythe bands of precast concrete or architectural concrete block in a brick veneer. After their initial mixing or casting, mortar, poured-in-place concrete and concrete masonry units shrink as the curing of the Portland cement proceeds. This is an unavoidable consequence of the curing of concrete products and is accommodated in design. 2.2.14 Sulphate Attack on Brickwork Most ordinary clay bricks contain sulphates of sodium, magnesium or calcium. These salts are soluble in water, calcium sulphate being less soluble than the other two. Normally, these sulphates are seen as the harmless efflorescence which affect appearance only and need simply to be brushed away. In theory, most brick walls with mortars based on OPC (Ordinary Portland Cement) are liable to sulphate attack. The most vulnerable walls are earth-retaining walls and parapet walls but sulphate attack is a problem also on rendered, and facing brickwork. On rendered brickwork, sulphate attack is manifested by cracking of the rendering, the cracks being mainly horizontal and corresponding to the mortar joints below. The rendering may adhere quite well to the bricks early in the attack but areas are likely to become detached as the expansion of the underlying brickwork causes severance of the bond between the two materials. (Eldridge, 1976) 2.2.15 Lime Staining on Brickwork Lime staining occurs when calcium hydroxide is deposited on the face of brickwork. Lime staining will quickly absorb carbon dioxide from the air and becomes calcium carbonate. It is virtually insoluble and can only be removed by expert which is a costly treatment. The calcium hydroxide can come from three main sources: calcium hydroxide caused by the hydration of Portland cement from hydrated lime added to mortar from brickwork in contact with wet concrete 2.2.16 Porosity on Brick Porosity is an important characteristic of bricks. In contrast to other moulded or pre-cast building materials, the porosity of bricks is attributed to its fine capillaries. By virtue of the capillary effect, the rate of moisture transport in the brick is ten times faster than in other building materials. Moisture is released during day-time and re-absorbed during night-time. The ability to release and re-absorb moisture by capillary effect is one of the most useful properties of brick that helps to regulate the temperature and humidity of atmosphere in a building. This distinctive property makes bricks an admirable building material, particularly suitable for buildings in the tropics. On the other hand, all porous materials are susceptible to chemical attacks and liable to contamination from weathering agents like rain, running water and polluted air. 2.2.17 Crack in Brick Faces / Firecracks The finished appearance of clay brick can vary greatly; this is because it is dependent on clay and the manufacturing process. Some products contain cracks of varying degree (sometimes referred to as firecracks) as an inherent feature. Firecracks are usually visible on the product as delivered. However, firecracks can be masked by the texture and surface sands used in the manufacturing process which becomes visible after the bricks are laid as a result of natural weathering of exposed brickwork. 2.2.18 Dampness of the Brick Wall More or less permanent dampness showing more clearly on the internal wall surface from ground level up to a height of about 750mm, but may be higher in severe cases or if the outer face is covered with a non-porous finish. The decorations may be damp, blistered or discoloured, or, if dry, may have been pushed off the wall by a film or salts which will often be seen as a fluffy crystalline growth. The possible causes of dampness in the brick wall are lack of DPC (damp proof course), by-passing of the DPC, and failure of the DPC material. 2.2.19 Brick Growth and Expansion Gaps in Brickwork Bricks undergo long-term permanent expansion over time. This expansion continues for the life of the brick, but the majority of the growth occurs early in its life. Most general purpose bricks have a coefficient of expansion in the range of 0.5-1.5mm/m (millimeters per meter) over fifteen years. Designers can use the values of the coefficient of expansion to accommodate for the growth of bricks by the size and spacing of the control joints. The provision of control gaps or articulation joints between parts of the structure during construction will accommodate movements within the structure over time. Numerous sources of movement exist and include: The change in size of building materials with temperature, loading conditions and moisture content The differential change in size of building materials (for example, cement products shrink over time, whilst clay bricks expand slowly over time) Foundation and footings movement Frame movement Frame shortening Temperature movement Internal horizontal and vertical movement 2.3 Causes of the brickwork defects 2.3.1 Introduction: Brickworks are used primarily in the construction of walls. To construct the brick wall required many skills, design, experience, selection of material, and technique. Lack of all expertise may cause the brickwork defects or failure of the building. The defects that occur in brickwork maybe the result of inherent faults, deficiencies in production, design, materials or workmanship, and attack by environmental agents. After the brickwork has been constructed, it maybe meets of various requirements, climate, loading, and occupational in use. It is not surprising that defects happened or occurs frequently. In this sub chapter, the causes of the brickwork defects will be list out. To find out the actual causes of the brickwork defects will be easily for the occupational to take the right remedies immediately and reduces the brickwork defects happen. 2.3.2 Selection of bricks The choice of bricks is often influenced by the price but the quality required must also be carefully considered in order to avoid defects developing during the service life of the material. Therefore, the selection of suitable bricks for any particular purpose has often to be a trade-off between appearance and durability requirements on the one hand, and cost on the other. This is not always possible to assess the quality of bricks by the colour, variability of colour of bricks of the same source and method of production can often be an indication of strength and durability variations. 2.3.3 Storage of bricks Bricks on site are rarely kept under adequate cover. Defects in the bricks resulting from the lack of adequate protection on the site are rarely apparent before use. However, bad weather conditions can be detrimental to bricks in that saturation by rain can be responsible for both subsequent efflorescence and decoration defects. 2.3.4 Soluble Salts in Bricks Under burnt bricks contain a high salt content. The salts come from the raw clay from which the bricks are made, or are formed in the burning process. Most clay bricks contain some soluble salts, but the types and amounts vary appreciably. The effect of the soluble salts on both efflorescence and the more serious problem of disintegration of bricks themselves are largely governed by the strength and pores structure of the bricks. 2.3.5 Sulphate attack Sulphates are salts which are naturally present in industrial waste, gypsum product, clay bricks, flue condensates and in some ground waters. In persistently damp conditions, sulphate will react slowly with tricalcium aluminate forming a compound called calcium sulphoaluminate. This reaction causes the cement mortar or render of the brickwork to expend and eventually disintegrate. 2.3.6 Solar Radiation While drying out of soil by trees is the most common reason for cracking in brickwork, some clay are also very susceptible to drying out by direct solar radiation. The northern facing wall is the most likely to be affected and stepped diagonal cracking is the most common symptom, usually occurring at the north east and north west corner of the building. (Loveder, 2000) 2.3.7 Migration of moisture The movement of moisture beneath a building can produce the phenomenon known as long term dome and saucer effect. The dome effect is a slow heaving of the soil caused by movement of moisture from the perimeter of the house to its centre, and the saucer effect is moisture moving in the opposite direction, from the centre towards the perimeter. The dome effect causes the walls to tilt outwards and the restraining influence of the roof produces horizontal cracks on the outside wall. These will be wider on the outside surface rather than the inner. 2.3.8 Planting of tree Some of the brickwork defects may cause by big trees roots that plant nearby the building area. When planning to plant trees, the idea to be considering is the strength of the footings under the house. If lack of strength, the roots of the trees maybe grow into the ground under the building and cause the brick wall settlement and cracking. 2.3.9 Uneven settlement of foundations Where a particular heavy load is placed on the foundation such as a large column, movement may occur as moisture is squeezed out of the soil or the soil readjusts itself. This consolidation will stop when the soil has finally compacted enough to support the load. Brick wall or masonry wall may crack which may result from movement during compaction. 2.3.10 Excessive vibration Damage caused by vibration from earth tremors, heavy traffic or pile driving is fairly rare, however if the vibration is great enough to actually cause the foundation to move, brickwork cracking or defect can occur. The crack will show up irregularly if the sources of the vibration cannot be removed. (Loveder, 2000) 2.3.11 Additional building Building an addition building onto a house or add more storey of houses can impose a load intensity on the soil different that which is there already and so cause differential settlement. Even if the loading intensities are similar, the difference in time between when the two settlements occurred can be enough to create the brick wall cracks. 2.3.12 Approach of design Design of brick wall is very important. The designer must have the knowledge about the brick experience in chosen the types of brick to be used. The designer must be fully aware of the clients needs. Defects often occur because of a lack of understanding of the different types of bricks and the method of construct the brick wall. 2.3.13 Lack experience of worker Workers in the masonry construction is not in strict accordance with the construction and standards, masonry mortar is not full, especially in vertical mortar joints are not full, and even produce dense seam, seam permeability. In addition, the dry brick on the wall, mortar in the brick water was absorbed, causing low strength of mortar, brick and mortar separation, so that the overall stiffness of masonry fell, gray mortar joints crack. 2.3.14 Overloading Cracks of brickwork may result from overloading of the ground on which the building rests, or of the building itself or parts of it. Releasing the load does not necessary allow the masonry wall to revert to its original state since the overloading may have been partially accommodated by a permanent compaction of the bricks. The forces responsible for the overloading may be of external origin, such as excessive wind, or may be internal, such as those arising from the installation of excessively heavy equipment for which the masonry wall was not designed. A change of occupational may have same results. 2.3.15 Lack of maintenance Maintenance must be taken for all the building to minimize the cost of repair work for seriously defects happen. Lack of maintenance will make a small cracks or defects on brickwork change to more serious and serious. 2.3.16 Improper soil analysis and preparation When a builder chooses an area of land to build on, it is important to do some sort of soil analysis and preparation. The analysis will provide the developer and/or builder with enough information to choose the adequate soil preparation and construction strategy that should be used to develop the land. Improper soil analysis and preparations can be very damaging to a housing development. For example, a builder can discover that the land soil is made up of expansive soil. If this is the case, houses need to have a foundation that will be able to support the changing pressure and consistency of the soil. This is because expansive soil will swell when wet and then shrink once it dries. If one builds on this type of soil and is not aware of it, there will inevitably be issues to handle. There will be crack in the brick wall or masonry wall. The repair of this is very costly and very intrusive. Unfortunately, the reality is improper soil analysis and preparations happen all the time. 2.3.17 Negligence of construction Negligent construction is an unfortunately common occurrence. A builder has to be very careful when choosing a contractor or subcontractor. A builder will sometimes use one contactor for various projects. A contractor may have skills to install floor tiles but not the know how to build a brick wall. The responsibility can fall on several parties when there is a defect, and thats up to your attorney to determine. 2.3.18 Movement of the ground Mining subsidence, landslips, earthquakes, or moisture changes of shrinkable clay soil may cause the movement of the ground. The brick wall of the building will be crack because the wall of building has become displaced from the rest without any change in actual size of the materials. In theory, this is possible to reconnect the displace parts to bring the building back to its original condition but in practice this seldom can be done. 2.3.19 Acid rain Acid rain is precipitation that is much more acidic than normal rainfall, and the acid rain is usually caused by pollution such as sulfur and nitrogen emissions. Several different mechanisms are operant in the deterioration of brick masonry through the action of acid rain. The bricks are susceptible to acid rain through the selective dissolution of their glassy phase. The mortar is affected mainly by the reaction of the calcareous components. The soluble salts resulting from these reactions, in solution with rain water or condensed moisture, will migrate through the porous matrix of the masonry. In the places where the water evaporates the salts will be deposited. Repeated dissolution and re-crystallization of these salts leads to the mechanical disruption of the masonry structure. Since the salts will concentrate in the more porous material, either the brick or the mortar will be more seriously affected, depending on their relative porosity. 2.3.20 Environment Two aspects of the environment have been considerably which is wind and temperature. This is because they cause loading to be applied to the structure. The strong wind may cause the brick wall or the whole building move, this may cause cracking to the part of the building. The high temperature applied to the brickwork may cause spalling and brick prolong to high temperature can lead to surface vitrification. (Swoden, 1990) 2.4 Remedies method of the brickwork defects in building 2.4.1 Introduction: As known early, brickwork is one of the largest parts of most of the building. The strength, stability, and durability of brickwork are very important. If lack of all those factor, the brick wall or masonry wall maybe fall down or collapse suddenly. If the brickwork occurs any cracking or defects, the right method of remedies must be taken immediately. This is to ensure that the occupational or owner use the building under safety and healthy purposes. Brickwork will deteriorate and decay if not properly maintained. Such deterioration can be caused by a number of factors and can take various forms. The main signs that brickwork is suffering are surface growth and staining, efflorescence, loosed brick becoming dislodged, crack appears throw the bricks or mortar and etc. So, the right remedy must be taken to ensure the brickwork do not decay and deteriorate. (Moses Jenkins, 2007) In this sub chapter, the remedies method for various types of defects will be list out. This is to avoid the brickwork defect getting serious in building in construction industry. The defects of brickwork must be repair immediately, if not the defects will be more serious. For example, cracking can be due to expansion or shrinkage the clay brickwork itself. 2.4.2 Remedies of efflorescence Efflorescence can be minimized by laying dry bricks and by speeding up the drying process after the bricks have been laid by providing good ventilation. The salts that cause efflorescence are soluble in water. Hosing with water will cause the salts to dissolve and be re-absorbed into the brickwork, and then reappear when the brick wall dries out again. Acid or alkaline treatments are not recommended as they increase the salt content of the wall. The best method is simply brush off the deposit with a stiff dry bristle brush after the wall has dried out. Then sponge the surface with a damp synthetic chamois or high suction sponge. Use very little water and rinse sponge frequently in fresh water. 2.4.3 Sand-Blasted Bricks   Which have been cleaned of old paint, algae, or stains using high pressure sand blasting or possibly even very high pressure water blasting can be permanently damaged by loss of the harder surface of the bricks which had been provided by their original firing. Once the softer internal brick has been exposed, the bricks will be more inclined to absorb water and to suffer water and frost damage. Sandblasting brick is considered a poor practice in building renovation and maintenance. 2.4.4 Remedies of sulphate attack The effects of sulphate attack manifest themselves as expansion of the jointing mortar. On rendered walls the signs are horizontal cracking of the rendering with portions falling off. Advanced stages of attack may make the structure unsafe. When rebuilding is necessary, the bricks use should be of low sulphate content and the mortar should be of a mix of 1:1:6 sulphate-resistance Portland cement: hydrated lime: sand. In addition, care should be taken to exclude all conditions of dampness. On rendered walls, the rendering should be removed and the brickwork allowed to dry before reapplying a weaker mix of sulphate-resistance cement, lime and sand. 2.4.5 Tackling Decay Where decay has occurred, take action to rectify the damage will be necessary before this leads to greater problems. The use of chemical treatments to stabilize brick should only be considered with extreme caution. Whilst the defects may be effective initially, there has been insufficient research carried out on the possible long term damage such treatments could have. Chemical sealants can trap moisture within the brick just as effectively as the claims to keep water out. 2.4.6 Cleaning Cleaning soiled brick buildings should be undertaken carefully. In the past, the use of inappropriate cleaning techniques has resulted in considerable damage being done. If considered essential small scale tests should be employed to assess the effectiveness and likely damage which could be caused before any large scale work is carried out. There are some guides when doing the cleaning works:- Do not re-clean brickwork with the same chemicals unless recommended by the cleaning chemical manufacturer. If there is deterioration, or suspected deterioration, in the mortar joints, additional water and chemicals need

College :: essays papers

College College! Why is it such a big deal to go right in to collage! I understand, however I just don't know what I want to do yet. I know I want to do something that has to do with criminal justice. As in the FBI. I just think that would be so cool. It would make me happy and I'll get paid O.K. My plans were to graduate, then stay with my mom for a year and just work 2 jobs, maybe take a class at U.A.A. So, I can keep with the whole study thing. Oh, and I would go into the Air Guard also. They really help with collage. Then a friend and me would get an apartment and split the rent. I would then go to U.A.A for 2 years and after that I would transfer to the University of my Choice. I got all of these ideas from my sister. I look up to my sister a lot. I learn from her experiences. She never took her SAT's and she did really badly in high school. But, when she went to U.A.A she got really good grades then she transferred over to N.Y.U. It's the 3rd hardest college to get into for her field! So, ya know if she can do it so can I. My father on the other hand! He thinks I should go to Grays Harbor Community College. And if I do, then I can live with him and he will pay for my BOOKS! If you don't know, Grays Harbor is a really bad college, it is worse then U.A.A. Even if I wanted to go, my mom wouldn't let me! I mean come on; he will help me pay for my BOOKS that's a real help. I remember one day I was in the truck with my dad and we were talking about colleges and he said "you can't go to a good college like your sister, you just cant. You're not like her. And, I'm sure as hell I'm not going to pay that much!" I told him I don't expect him to pay for anything. My sister went through college without her dad's help, so I can do it to. Every time I try and talk to him about the university that I'm interested in or when I tell him I want to be in the law or psychology field, he just changes the subject!