Reading, rhyming and phoneme detection Essay Example | Topics and Well Written Essays - 2000 words

Reading, rhyming and phoneme detection - Essay Example The outcome of this research study provides SLPs and teachers with guidelines for teaching phonological and phonemic awareness to children with or without learning disabilities who are encountering problems with early reading and/or spelling. Furthermore, by providing a description of available measures that indicate problems in phonological awareness and literacy, the study analyzes three models for assessing children's phonological and rhyming awareness and their subsequent reading skills. The study confirms the importance of early rhyming skills. Was relevant background literature reviewed? Describe the justification for the study. Reading research has gained a lot of attention in the last few years because critical stages of phonological awareness can be developed through carefully planned instructions. This research is justified in that there is a need to find the connections between a child’s early phonological and rhyming skills and his or her progress in reading and sp elling. It is established that activities such as substituting different sounds for the first sound of a familiar song help in a child’s development of phonological awareness, which is a cognitive substrate to reading acquisition. It is known in this context that phonological awareness is not only cognitively related for analyzing words but also prepares children for later reading instructions in phonics and spelling. The authors of this article have discussed that the inability to process language by using phonological key knowledge poses as much of a barrier to learning early word reading as is posed by rhyming and alliteration. Moreover, the research outcomes reveal that weakness in phonological processing or weakness in rhyming... This study reports the results of four sessions during the period when the children were between the ages of 4 and 6 years and were tested with the use of two sets of predictive measures and one set of outcome measures. The predictive measures tested the children at the age of 4 years and 7 month and 5 years and 7 month on rhyme and alliteration detection ability. At the ages of 5 years and 7 month and 5 years and 11 month the researchers tested the children on their phoneme detection. The goal for the first set of tests was to measure reading, spelling and arithmetic ability. For the first set of tests, the researchers conducted the test at the home of the participants. All later tests were conducted at the participants’ schools. The intervention for the first set of tests gave the children different versions of rhyme-oddity tasks. The children had two practice trials followed by ten experimental trials. In each trial the child could choose between three words with pictures a nd pick the two words that rhymed with them; such as â€Å"fish† and â€Å"dish†. The researchers used the same tools to measure the children’s sensitivity to sound repetition as well. The third session of the test incorporated a little more challenging tasks for the children because now they were an year older (5 years and 7 month), which demanded their attention to the position of sounds in words. During this intervention the researchers used three pictures that they showed to all the children and then asked them to point out which words began with the same sound. For example â€Å"code† ended with the same sound as â€Å"rote†.

Biology Lab Essay Example for Free

Biology Lab Essay 1.Discuss how to protect yourself from body fluids, such as saliva and blood. oGloves protect you whenever you touch blood, body fluids. The use of gloves also decreases the risk of disease transmission if you are pricked with a needle. Always wear gloves for handling items or surfaces soiled with blood or body fluids. oWash your hands and other skin surfaces immediately after they come in contact with blood or body fluids. oMasks and protective eyewear, such as goggles or a face shield, help protect your eyes, mouth, and nose from droplets of blood and other body fluids. Always wear a mask and protective eyewear if you are doing a procedure that may expose you to splashes or sprays of blood or body fluids. oAprons protect you from splashes of blood or body fluids. Always wear a gown or apron if you are doing a procedure that may expose you to splashes or sprays of blood or body fluids 2.Why should you consider a body fluid capable of infecting you with disease? o I think you should be aware and alert because its precaution to practice when youre working in a lab setting. 3.Describe how to dispose of waste material contaminated with body fluids. o You should dispose all waste material in the correct disposal area, and you can throw away the waste materials in the biohazard container. 4. Explain how to safely plug and unplug an electrical device. o When you plug in such electrical equipment, make sure you include the ground plug round. Hold the plug firmly by the insulating cover when plugging it in or unplugging it. Never unplug an electrical device by pulling on its cord. 5.Discuss how to protect yourself from preservatives used on biological specimens. o You would protect yourself from preservatives used on a biological specimen by wearing gloves and safety glasses. Do not shake the container or put the specimen back in the container. 6.Why are special biohazard containers used for biological waste? o Biohazard containers are used to separate infectious, contaminated or dangerous material from other materials that wouldn’t be labeled as such and to protect us and the environment. Also the disposing of biohazard material is done differently than normal material.

Evolution Of Speaker Manufacturing English Language Essay

Evolution Of Speaker Manufacturing English Language Essay A speaker is an electrical device that converts electrical signals to mechanical motion in order to create sound waves. A transducer, which is another name for a speaker, is a device that converts one form of energy to another. The speaker moves in accordance with the variations of an electrical signal and causes sound waves to propagate through a medium such as air or water. The first electrical speaker, patented by Alexander Graham Bell in 1876, was for the earpiece of the telephone. This design was later improved upon by Ernst Siemens and Nicola Tesla in 1877 and 1881 respectively. Siemens and Tesla used a metal horn driven by a membrane attached to a stylus to create the design of what would be the basis for the modern speaker. Thomas Edison was working on a design at this time using compressed air as the amplifying mechanism. He quickly found this was not the most effective way to create the mechanical waves that produce sound. He quickly withdrew his application for a patent an d settled on the metal horn design. The metal horn speaker is a speaker which can be found on antique record players. Metal Horn Speaker Moving Coil Speaker The modern design of the moving coil driver was established by Oliver Lodge in 1898. Lodge was a British physicist and writer that was involved in many key patents involving wireless telegraphy. In 1915, Magnavox emerged as the first public company to produce a loudspeaker. This design was the first practiced use of the moving coil drivers in a loudspeaker. Magnavox was started in that same year by Edwin Pridham and Peter L. Jensen. The companys focus was on developing consumer electronics. They would later go on to be the first to develop a phonograph loudspeaker. Today Magnavox is owned by one of the world leaders in electronics, Phillips. In 1924, Chester W. Rice and Edward W. Kellogg received the first patent on the moving-coil principle, direct radiator, and loudspeaker. Their patent was different from the previous attempts because of the adjustment of mechanical parameters in their design. The fundamental resonance of the moving system takes place at a lower frequency than that at which the cones radiation impedance becomes uniform. In 1926, Rice and Kellogg sold the loudspeaker, Radiola which was superior to anything else previously invented because it decreased sound distortion and improved audio quality for the buyer. These speakers used electromagnets instead of large powerful magnets in their design. The electro magnets were used because larger, more powerful magnets were not available at a cheap enough price at the time. In the 1930s, manufactures began placing two or three band passes worth of drivers in their speakers, which allowed for increased quality, sound pressure levels, and frequency response. Many of the components involved in the production of modern speakers have been improved upon from their initial designs. The biggest improvements have occurred mainly in the makeup of the materials in the speaker and in the enclosure design. The diaphragm materials and permanent magnet materials are some of the other speaker components which have improved throughout the years. With the advent of computer aided design and increased accuracy in measuring techniques, the development of the speaker and quality of sound have grown exponentially in recent years. The modern loudspeaker has a similar makeup to that of earlier designs, but some of the basic ideas behind the design have changed to give us the speaker we have today. The Modern Speaker Modern speakers use a permanent magnet and an electromagnet to induce the reciprocating motion of the diaphragm. The alternating current going through the electromagnet constantly reverses the magnetic polarity of the coil thus reversing the forces between the voice coil and the permanent magnet. This causes a rapid back and forth motion of the coil resembling that of a piston. When the coil moves it causes the diaphragm to vibrate the air in front of the speaker, creating sound waves. The frequency and amplitude of the electrical audio signal dictates the rate and distance that the voice coil moves thus determining the frequency and amplitude of the sound waves produced by the diaphragm. Drivers are only able to create sound in a given range of frequencies, thus many different types of drivers must be manufactured to account for the wide range of possible frequencies. The main components of the modern speaker are the diaphragm, permanent magnet, suspension, voice coil, and basket with three other important features being coaxial drivers, speaker enclosures, and audio amplifiers. In the following sections we will break down each component and investigate the improvements of each component including those in the material selection and the manufacturing process. Diaphragm One of the main components of a speaker is the diaphragm, sometimes called a speaker cone. The diaphragm can also be referred to as the diaphragm and its surrounding assembly including the suspension and the basket. However for our purposes the suspension and the basket will be individually discussed in later sections. Movement of the diaphragm causes sound waves to propagate from the speaker thus producing the noise we hear. The ideal properties of a diaphragm are minimal acoustical breakup of the diaphragm, minimal standing wave patterns in the diaphragm, and linearity of the surrounds force-deflection curve. The diaphragm stiffness and damping qualities plus the surrounds linearity and damping play a crucial role in reproducing the voice coil signal waveform. Eighty five percent of the diaphragms sold worldwide are made of cellulose fibers because they can be easily modified by chemical or mechanical means to giving it a practical manufacturing advantage not found in other common diaphragm materials, although reproducibility can be a problem. The lack of reproducibility can affect imaging, depending on the precision and quality of production. Cellulose is also advantageous over other diaphragm materials because of its low cost to produce. Although Cellulose works well as a diaphragm, new synthetic materials are emerging that are more lightweight, allowing for better audio quality, reduced distortion, and increased vibration and shock durability. These materials include polypropylene, polycarbonate, Mylar, silk, fiberglass, carbon-fiber, titanium, aluminum, aluminum-magnesium alloy, and beryllium. Polypropylene is the most common plastic material used in a diaphragm. The polypropylene is normally mixed with a filler, such as Kevlar, to reduce the manufacturing costs or it can be to alter the mechanical properties of the diaphragm. Polypropylene diaphragms have been increasingly more popular with the advancements in modern adhesive technology. Although with all plastic materials present, the material tends to have a viscoelastic creep, which is the materials tendency to slowly deform and stretch when under repetitive stresses. However, polypropylene diaphragms are still a popular choice for high performance speakers due to their consistent performance. Research is presently underway in attempts to create new plastic based materials such as TPX, HD-A, HD-I, Neoflex, and Bextrene for diaphragms. These materials generally have the same characteristics as polypropylene so the manufacturing costs cannot be justified for full production. Another option for low-frequency applications are woven fiber diaphragms. The woven fibers such as carbon fiber, fiberglass, and Kevlar are bonded together with a resin. When the high tensile strength of the woven fibers mixes with the adhesive and bonding characteristics of the resin it results in an incredibly stiff material. This stiffness results in a great low-frequency diaphragm, however the stiffness causes rough high-frequency responses. There have been numerous attempts to improve the high-frequency problems of woven fiber diaphragms such as using two thin layers of Kevlar fabric bonded together with a resin and silica microball combination and another attempt employed a sandwich structure of materials with a honeycomb Nomex core. But again, as with the advanced plastic materials, the cost of manufacturing versus the performance of the material cannot yet be justified. The final modern practical material for diaphragms is metal. Metals worst downfall is its terrible damping attributes which causes extreme high-frequency distortion. The most common metal of choice are aluminum and magnesium alloys. Due to the lack of technological advances in damping agents to add to these alloys, metal diaphragms are very rarely used in high-frequency applications. However, these alloys have been commonly used in lower end frequencies with great success. Permanent Magnet Modern driver magnets have become predominately permanent magnets. Historically this function was filled by the use of electrically powered field coils. When high-strength permanent magnets became available, they eliminated the need for the additional power supply that drove the coils. When this happened, Alnico magnets became popular. Alnico magnets are created from alloying aluminum, nickel, and cobalt. Until about 1980 Alnico magnets were primarily used but because of their tendency to become demagnetized, permanent magnets have since been made of ceramic and ferrite materials. Ferrite magnets are constructed by mixing iron oxide with strontium and then milling the compound into a very fine powder. The powder is then mixed with a ceramic binder and closed in a metal die. The die is then placed in a furnace and sintered to bond the mixture together. Sintering is the process in which the particles of the powder are welded together by applying pressure and heating it to a temperature below its melting point. Although the magnetic strength to weight ratio of ferrite magnets is lower than Alnico, it is considerably less expensive, allowing designers to use larger yet more economical magnets to reach a desired performance. In manufacturing, the most significant technical innovation of the speaker is due to the use of neodymium magnets. Currently neodymium magnets are the strongest permanent magnets known to man. For this reason neodymium magnets significantly help in producing smaller, lighter devices and improve speaker performance due to their great capacity for generating strong magnetic fields in the air-gap. A neodymium magnet is an alloy of neodymium, iron, and boron to form the molecule Nd2Fe14B. The molecular structure of this molecule is a tetragonal crystalline structure. Important properties in a magnet are the strength of the magnetic field, the materials resistance to becoming demagnetized, the density of magnetic energy, and the temperature at which the material loses its magnetism. Neodymium magnets have much higher values for all of these properties than other magnetic materials except that it loses its magnetism at low temperatures. For this reason it is sometimes alloyed with terbium and dysprosium in order to maintain its magnetic properties at higher temperatures. Suspension Another critical element in speakers is the suspension. The purpose of a suspension system is to provide lateral stability and make the speaker components return to a neutral point after moving. A typical suspension system includes two major components, the spider and the surround. The spider connects the voice coil to the frame of the speaker and provides the majority of the restoring force. The surround connects the top of the diaphragm to the frame of the speaker and helps center the diaphragm and voice coil with respect to the frame. Both components work together to make sure the diaphragm and coil assembly move strictly linearly and in line with the center of the permanent magnet. The spider is usually made of a corrugated fabric disk, impregnated with a stiffening resin. The name comes from the shape of early suspensions, which were two concentric rings of Bakelite material, joined by six or eight curved legs. The surround may be resin treated cloth, resin treated non-wovens, polymeric foams, or thermoplastic elastomers that are molded onto the cone body. An ideal surround has sufficient damping to fully absorb vibration transmissions from the cone to surround interface, and the durability to hold out against long term fatigue caused by prolonged vibration. Advancements in suspension manufacturing have come from innovations in synthetic suspension materials. The use of synthetic materials like kevlar or konex instead of cotton, has made todays speakers much more stable than those made as recent as ten years ago. A more durable suspension means that a speakers sound quality can remain unaltered for a longer period of time. This is especially a concern for speakers that generally operate at low frequencies since lower frequency sounds are created by larger diaphragm travel and larger diaphragm travel must be supported by more suspension travel. Voice Coil The wire in a voice coil is usually made of copper, though rarely aluminum and silver may be used. Voice coil wire cross sections can be circular, rectangular, or hexagonal, giving varying amounts of wire volume coverage in the magnetic gap space. The coil is oriented co-axially inside the gap; it moves back and forth within a small circular volume (a hole, slot, or groove) in the magnetic structure. The gap establishes a concentrated magnetic field between the two poles of a permanent magnet, the outside of the gap being one pole, and the center post (called the pole piece) being the other. The pole piece and backplate are often a single piece, called the poleplate or yoke. This magnetic field induces a reaction with the permanent magnet causing the diaphragm to move thus producing the sounds we hear. Voice coils can either be overhung, longer than the magnetic gap, or underhung, shorter than the magnetic gap, depending on its application. Most voice coils are overhung thus preventi ng the coil from being overdriven, a problem that causes the coil to produce significant distortion and removes the heat-sinking benefits of steel causing the speaker to heat rapidly. The most important characteristic of a voice coil is that it be able to withstand large amounts of mechanical stresses and also be able to dissipate heat to its surroundings without causing damage to the speakers other components. In early loudspeakers the voice coil was wound onto paper bobbins to remove heat from the system. At the time this was enough to cool the system at average power levels but as larger amplifiers became available allowing for higher power levels new technologies had to emerge. To cope with the increasing power inputs the use of alloy 1145 aluminum foil was widely used as a substitute for the paper bobbins. Aluminum was popular to industry due to its low cost to manufacture, its structural strength, and it was easy to bond to the voice coil. However, problems with the foil emerged over extended use at increased power levels. The first problem was the foil tended to transfer heat from the voice coil into the adhesives used inside the speaker causing them to thermally degrade or even burn. The second problem was the motion of the aluminum foil inside the magnetic gap created currents that actually increased the temperature of the voice coil, thus causing long-term reliability issues. In 1955 a new material was developed called Kapton, a polyimide plastic film, to replace the aluminum foil. Kapton solved all the problems that were associated with the aluminum foil however Kapton or even its improved cousin Kaneka Apical, were not perfect. Both high-tech materials were costly to manufacture and had a tendency to soften when heated. Although Kapton and Kaneka Apical had their downfalls they became the most widely used coating for voice coils until 1992 when a material called Hisco P450 was developed. Hisco P450 is a thermoset composite created by using a thin film of fiber glass cloth and impregnating it with a polyimide resin. This combination allowed for necessary mechanical strength and endurance of the polyimide and necessary temperature resistance and stiffness of fiberglass. Hisco P450 was able to withstand the grueling temperature requirements of professional speakers while also maintaining enough rigidity to withstand the mechanical stresses associated with long-term, high-frequency motions. In recent years the copper wire that is almost always used as the voice coil has been replaced sparingly with aluminum wire in extra sensitive, high-frequency applications. The aluminum wire is lighter than the copper wire and has about two thirds of the electrical conductivity allowing the wire to move at higher frequencies inside the magnetic gap. Variations of the aluminum wire include copper-clad aluminum and anodized aluminum. Copper-clad aluminum allows for easier winding along with an even more reduced mass. The anodized aluminum is effectively insulated against shorting which removed the concerns of dielectric breakdown. Aluminum wires are great lightweight, low-inductance choices for voice coils however, they do have their downfalls. The thermal characteristics of aluminum causes power limitations with the coil. If too much power is passed through the aluminum coil it can cause the adhesive bonds between the wire and the bobbin, or the bobbin to the spider and coil to weaken or even burn. To cope with the ever increasing power demands on the voice coil in addition to wrapping the coil in some high-tech material to increase its thermal properties, the voice coil has also been submerged in a ferrofluid, an oil that is used to conduct heat away from the voice coil and also creates a small magnetic field thus increasing the power handling capacity of the voice coil. Basket The basket or frame (as seen below) is the fixture used to hold the diaphragm, voice coil, and magnet in the proper place. The rigidity of this part is extremely important to prevent rubbing of the voice coil and prevent random movements that could cause problems with the permanent magnet. The three most common types of modern baskets are cast metal baskets, rigid baskets made out of stamped steel or aluminum, and cast plastic baskets. Each type of basket offers different advantages and disadvantages; these will be discussed in the flowing paragraphs. The stronger the basket the more power the speaker can handle before failure occurs. A well made basket should have a high power rating, be lightweight, and be able to conduct heat away from the voice coil to prevent physical changes or even possible demagnetization of the permanent magnets. Cast metal (above right) baskets are the most rigid of the three in all directions, but they are the most expensive to make. Cast metal baskets are made by melting down the desired metal to liquid form. The scorching hot liquid metal is then poured into a mold and once the liquid metal dries inside the mold, the mold is removed revealing a cast metal basket. Cast metal baskets although more expensive than the other two options, usually are more rigid thus preventing motion. They also have better damping characteristics, and they are also more easily manufactured allowing for more intricate shapes. Cast metal baskets are usually the preferred basket choice for higher quality speakers. A less expensive and yet less rigid basket can be made out of stamped steel. The stamped steel or aluminum sheets arrive to the manufacturer preformed. The sheets are then drilled using a hydraulic press to cut holes in the sheet to allow air flow to and from the diaphragm. The sheet is then pressed using another hydraulic press using a die to form the desired shape. Stamped metal baskets tend to be weaker than their cast metal counterparts. This weakness could cause the basket to flex if the speaker is being used at high volumes. The final option, which is even less expensive, is a cast plastic basket. Cast plastic baskets are made by using the liquid plastic and pouring it into the desired shaped mold. When the liquid plastic dries the mold is removed revealing a cast plastic basket. Just like cast metal baskets, cast plastic baskets are easily manufactured allowing for intricate shapes. The lightweight characteristics of the plastic would also make the speaker lighter allowing for smaller power consumption. However, as with most engineering decisions, the performance of the part proportionally decreases as the cost to produce the part decreases. The decreased cost of production of the plastic basket means that it is a weaker basket. This weaker, plastic basket will allow for the most flexing as compared to cast metal and stamped steel baskets. The power rating of the speaker would also be less than that of the metal baskets, both cast and stamped, due to the weaker strength characteristics of plastic in com parison with metal. Coaxial Drivers Coaxial drivers are the components of a speaker that radiates sound from the same point or axis. This is done by placing a high-frequency driver in the center of a low-frequency driver so that they produce sound waves from a single point in a loudspeaker system rather than separate locations. This allows for a more beneficial design over having the low and high frequency drivers separate. There are many different types of drivers and each driver produces sound within a limited frequency range. Subwoofers, woofers, mid-range drivers, and tweeters are all driver types capable of emitting different ranges of sound. A coaxial driver takes one of these higher frequency drivers and places it within a lower frequency driver. For example, a tweeter, the high frequency unit, could be placed in the center of a woofer, the low frequency unit, so that both drivers emit sound from the same point. This example can be seen in the images below. This design, which improves sound quality, was first de signed by Altec Lansing in the 1940s. Although it has many advantages, it is still an uncommon practice in the manufacturing of speakers due to technical and budgetary considerations. Enclosures The enclosure of a loudspeaker serves three functions and is made with a specific design that helps improve the quality of the sound produced by the speaker. The first function the enclosure performs is separation of the sound waves. It accomplishes this by preventing sound waves generated at the back of the speaker from interacting destructively with sound waves generated at the front of the speaker. The enclosure is intended to reduce distortion created because the waves that emanate from the front of the speaker are out of phase with the waves emanating from the rear of the speaker. If the front and rear waves were to overlap with one another it would result in wave interference. The second function the enclosure serves is to stop any echo and reverberation that would be created from the two differing sound source locations on the speaker. Because waves are created at the front and rear of the speaker, the two different sets of waves travel through the air differently as a result of their relative locations, and arrive at the person listening at different times. The third function the enclosure serves is to deal with the vibrations produced by the driver and to deal with the heat produced by the electronic components. Enclosures did not always have the fully enclosed container design that they now commonly have. Although present day practices say that enclosures need to have a back, before the 1950s they lacked one due to the cooling functions of an open container. Sealed enclosures, the most common type of enclosure, is completely sealed so no air can escape. With this type of enclosure the forward wave travels outward into the surroundings, while the backward wave is limited to only fill the enclosure. With a virtually airtight enclosure, the internal air pressure is constantly changing; when the driver retracts, the pressure increases and when the driver moves out, the pressure decreases. Both movements create pressure differences between the air inside the enclosure and the air outside the enclosure. Because of this, the driver motion always has to fight the pressure differences caused. These enclosures are less efficient than other designs because the amplifier has to boost the electrical signal to overcome the force of air pressure. The force due to air pressure does, however, provide an additional form of driver suspension since it acts like a spring to keep the diaphragm in the neutral position. This makes for tighter, more precise soun d production. Enclosure designs range from very simple, rectangular particle-board boxes (above left) to very complex cabinets made of composite materials (above right). The simplest enclosures are made to prevent destructive interference caused by overlapping of the front and rear sound waves from the speaker. The most complex enclosures contain acoustic insulation and internal baffles, which prevent interference. Solid materials such as heavy wood, are typically used when building enclosures in order to absorb the vibration caused by the speaker driver. This vibration dampening is extremely important. A speakers sound output would be drowned out by the drivers vibrations if there were not an enclosure incorporated into the design. Since the beginning of the production of enclosures, the most advantageous properties required for minimal energy loss through the enclosure walls have remained unchanged. Different strategies employed to reduce energy losses are to use thicker enclosure walls, denser hardwood plys and sturdier bracing. The downside to these methods is that they all add significant weight to the enclosure. However, with the production of newer materials that possess an increased stiffness-to-mass ratio this is changing. These new materials can improve performance and reduce weight, while also reducing the cabinets resonance. The end result is that a greater amount of the speakers en ergy is delivered in the intended direction rather than into mechanical vibrations which are wasted and produce a decrease in sound quality. A recent alternative to heavy wood construction of enclosures is the use of composite materials. It was for the aerospace industry that composite materials such as carbon-fiber were originally developed. Carbon-fiber was a success because of the high demand for a material with increased strength and rigidity. Speaker applications, such as enclosures use carbon-fiber materials to create a product with a vastly decreased weight and increased strength and rigidity. Enclosures built with carbon-fiber can weigh less than half as much as enclosures built from heavy wood. These enclosures which limit the speaker resonance can provide as much as 3 dB more output than the same speaker would have otherwise had in a heavy wood enclosure. Furthermore, carbon-fiber enclosures are extremely durable adding quality to the final product and they require almost no maintenance. Even though carbon-fiber enclosures cost around twice as much to produce as traditional enclosures, the lighter weight and ext ra output offer two very advantageous tradeoffs. Amplifier An amplifier is any device that increases or decreases the amplitude of a signal. An audio amplifier increases low-power audio signals to a suitable level for loudspeakers. When dealing with a speaker there are a many audio amplifiers involved. These amplifiers are responsible for pre-amplification, equalization, tone control, and mixing effects followed by a higher power amplifier which creates the final amplification for suitable levels of sound output. Amplifiers are found in wireless receivers and transmitters, CD players, acoustic pickups, and hi-fi audio equipment. Amplifiers are used for high-quality sound production, and depending upon the quality of the amplifier, they may cause distortion, which the speaker enclosures are meant to deal with. Distortion in amplifiers is caused by difference in phases of the output waveform and the input waveform. The smaller the difference in between the output and input waveforms the greater the quality of final sound. Audio amplifiers cons ist of resistors, capacitors, power sources, wires, semiconductors, and stereo jacks all combined on an electronic work board to produce the type of amplifier needed. Types of Speakers Woofers are loudspeaker drivers designed to produce sounds of low frequency from around 40 hertz up to around 1000 hertz. The most common design for a woofer is the electro-dynamic driver, using a stiff paper cone driven by a voice coil. Woofers are important to allow for a range of frequency that will hit a low level. Effective woofer designs efficiently convert low frequency signals to mechanical vibrations. The vibration of the air out from the cone creates concentric sound waves that travel through the air. If this process can be done effectively, many of the other problems speakers run into will be greatly reduced such as linear excursion. For most speakers the enclosure and the woofer must be designed to work hand in hand. Usually the enclosure is designed around the woofer, but in some rarer cases the enclosure design can actually dictate the woofer design. The enclosure is made to reflect the sounds at the right distance, so that they will not be wave cancelling reflections. Below you can see an example of a common woofer. A subwoofer is a woofer with a diameter between 8 and 21s. Subwoofers are made up of one or more woofers. They can be arranged in many different configurations to produce the best quality of sound. Subwoofers usually play frequencies between 20 hertz and 200 hertz, well within the range of human auditory levels. The first subwoofer was created in the 1960s and added to the home stereo to create bass for sound reinforcement. Up until this point the only form of audio player which contained bass was a phonograph player which was created by Magnavox. This allowed for a more accurate array of music. Subwoofers are used in all sound systems today such as in cinemas, cars, stereos, and for general sound reinforcement. A mid-range speaker is a loudspeaker driver that produces sound between 300 hertz and 5000 hertz. These are less commonly known as squawkers. Midrange drivers can be found as cone speakers, dome speakers, or compression horn drivers. Mid-range speakers usually resemble small woofers. The most common material the cone is made out of for a mid-range is paper although they can be found to be coated or impregnated with polymers or resins to improve vibration dampening. Much of the rest of the mid-range speaker is made from plastic polymers. Mid-range speakers which employ the dome set up usually only use 90 degrees of the sphere as the radiating surface. These can be made from cloth, metal or plastic film. The voice coil in this design is set at the outer edge of the dome. Mid-range drivers are most commonly used for professional concerts and are compression drivers coupled with horn drivers. Rarely mid-range speakers can be found as electrostatic drivers. Mid-range speakers handle the most prominent part of the human-audible sound spectrum. This is the region where most sound emitted by musical instruments lie. This is also where the human voice falls in the audible spectrum. Most television sets and small radios only contain a single mid-range driver. Tweeters are a loudspeaker designed to produce frequencies from 2,000 to 20,000 hertz. Some tweeters on the market today can produce sounds of up to 45000 hertz. The human ear can generally only hear up to about 20000 hertz. The name tweeter comes from the extremely high pitch it can create. Modern tweeters are different from older tweeters because older tweeters were smaller versions of woofers. As tweeter technology has advanced, differen

The Indian Uprising (a Critique) :: essays research papers

Any author's primary goal in story writing is to convey an idea or topic to their reading audience. The conventional wisdom on this thought is that the clearer this is conveyed, the greater the appeal to the reader. However, some authors feel the need to resist this trend and forge new paths that sometime leaves the meanings of their stories obscure and hidden from the average reader. Donald Barthelme has taken this optional approach with his story "The Indian Uprising". There are several reasons that I did not fully enjoy this post-colonial short story. One, its "point" is vague and this is a challenge to my current reading abilities and two, it rambles along its disjointed timeline to the point that I became easily lost. However, there is something that the story brought to light that I am now more fully aware of than before reading this story. That is my own abilities of intellectual analysis. It is these areas that I wish to elaborate upon.Donald Barthelme's deliberate twisting of the subtleties in meaning in his story is intriguing. However, as a recent popular movie so elegantly put it, it left me dazed and confused. I couldn't seem to figure out what the point or moral of the story should be. Was this a story of a battle between cowboys and Indians, as it suggests in its title? The story starts off leading you to take this as a real possibility with lines such as "We defended the city as best we could. The arrows of the Comanches came in clouds."(123). Or was it a story of love set in the time of war? "...we issued entrenching tools to those who seemed trustworthy and turned the heavy-weapons companies so that we could not be surprised from that direction. And I sat there getting drunker and drunker and more in love and more in love." (124). Although the story bounces between these two main "insinuations", it is never clear to me what or who the story is about and I found this to be an unfulfilling reading. In retrospect my previous readings of literature have been more of the atypical writing style. One that leaves you comfortable and secure and without guesswork "The Indian Uprising" avoids this style at all cost. The author's intent on writing in the style of a collage, although fascinating, is very confusing. I will be the first to admit I'm not the most avid of readers, but having to read a story two or even three times and still not fully perceiving its meaning made it an even more arduous read.

Osmosis in Different Concentrations

I am going to investigate osmosis when potato is placed in different   concentrations of sucrose. I am aiming to witness osmosis in 5   different concentrations of sucrose. I will use 5 varying concentrations so that I have a wider spread to compare the results,   and check that I don’t have any anomalies Prediction Osmosis  is the process of diffusion of water molecules from a weaker   solution into a stronger solution, through a semi  permeable membrane.The tiny pores in the membrane of the potatoes will allow the water   molecules to go in and out of the potato cell, depending on the   concentration gradient between the potato and the sucrose solution. If   the  water concentration  is lower in the potato than in the sucrose   solution, then water will pass from the sucrose solution into the   potato, and it will gain weight.If there is a higher concentration of   water in the potato, then the water will go out of the potato and into   the sucr ose solution, as osmosis is the movement of water molecules   from a region of high concentration to a region of low concentration,   through a semi permeable membrane. So, I predict that the higher the   concentration of sucrose, the lower the weight of the potato as water   from the potato diffuses into the sucrose solution. Predicted graph of results: [IMAGE] Apparatus * 6 test tubes * 6 different concentrations of sucrose solutions * Potato Potato cutter/core * Digital measuring scales * Measuring cylinders * Knife * Test tube racks * Tissue paper Method I will need 1 piece of potato in each tube. As there are 15 tubes I   will have to calculate how many pieces I will need altogether. I think   this would be a suitable calculation: 1Ãâ€"15=15. So, I will pierce out   some pieces of a potato using a core, and then cut 15 slices with a   knife. Then I will measure 10ml of each of the 6 sucrose solutions   using a measuring cylinder. I will be given these differe nt   concentrated solutions in the general laboratory.I will label the   tubes 1 to 15 and fill each one with 10ml of the solution. Tube 1-3 will have a concentration of 0 Tube 4-6 will have a concentration of 0. 4 Tube 7-9 will have a concentration of 0. 8 Tube 10-12 will have a concentration of 1. 2 Tube 13-15 will have a concentration of 1. 4 I will measure each slice on the measuring scales to identify each   potato slice with its weight before and after immersion in the   sucrose. Having measured each slice on the scale and recorded its   weight, I will then place the slices in the test tube containing the   solution for 24 hours.Then I will empty the solution from the test   tube by pouring it in the sink and remove the potatoes by hand and   place them one by one on the scale. For accuracy, I will make sure   that I wipe off any excess solution on the scale before placing each   new slice on it. I will record the weight after placing them in the   soluti on for 24 hours. This process will be repeated for tubes 1 to 15   and the results will be noted in a table and then plotted on a line   graph. I will make this a fair test by only varying the concentration of   sucrose and the size of the potato slices, but keeping everything else   the same.The same potato must be used for the whole experiment or   otherwise, the results would differ as the age and sizes might be   different, which means one potato might have more water in it than the   other. I will use a 10ml measuring cylinder so that I can accurately   measure the exact amount of sucrose needed. As the cylinder measures   different sucrose solutions, it has to be washed out each time I measure   another 10ml of sucrose for the next tube, because it may be   contaminated with the different sucrose’s.All the tubes will be kept for   the same time, in the same place, so that the uncontrollable   temperature would not affect the tubes separately. I will not be able to control: * Temperature – because I won’t be in the laboratory for 24 hours,   and the temperature could change in the night, or morning. *Temperature of solution- because I was not able to obtain a thermometer and I was not in the laboratory for 24 hours so it could change. * Weighing scales – because these are digital and therefore, it   produces results by itself. I will be able to control: Concentrations of sucrose – they are already measured * Time – I will do the experiment, and come back the next day at the   same time, and promptly record the results *weight of the potato- I weighed the potato slices before the experiment. For safety in the laboratory, I will be very careful using the sharp   knife which I will be using to cut the potatoes with. I will make sure   that I have an overall so that my clothes don’t get dirty if the   solutions spills. I will remember not to put potatoes or sucrose in my   mouth as they might have been infected by chemicals in the lab, which   are poisonous.I will measure the weight of the potato in grams, and the concentration of sucrose in percentage. I am expecting everything to work out well as I have a perfectly good   method but if I feel that the results may be wrong, I will repeat my   experiment. Preliminary results These are my results: This experiment supports my plan and prediction. The carrot gains   weight in normal water, and decreases weight in concentrated sugar   solutions. By doing this experiment, I believe that my method is good, and it   will work. I think I should specifically be aware of the scales,   because they alter a lot.However, this was carried out at home, so   the cooking scales may have not been so accurate, as accuracy is not   very important in cooking. Results these are my first results. They proved to be wrong. This mistake   would have been made my human. I assume that I used two different   scales, and have got all the weights jumbled up. The weight taken at   the beginning is also not correct, so I may have made a mistake right   from the start. Concentration of sucrose. | Weight before| Weight after| 0| 1. 28| | 0| 1. 33| | 0| 1. 29| | 0. 4| 1. 29| | 0. 4| 1. 27| | 0. 4| 1. 2| | 0. 8| 1. 31| | 0. 8| 1. 3| | 0. 8| 1. 3| | 1. 2| 1. 29| | 1. 2| 1. 37| | 1. 2| 1. 27| | 1. 6| 1. 26| | 1. 6| 1. 3| | 1. 6| 1. 31| | Conclusion I found out that as the concentration of sucrose increases, the weight   of the potato decreases. In water it gained 1. 26 grams, but in 1 Sucrose   solution, it lost 0. 16 grams. My prediction supports my conclusion. I have calculated the average change in weight to have a simple, clear   idea where the experiment is leading me to. Instead of having a large   number of weights, I combined them into one by averaging them.I found   the average by adding the weight gain/loss for each tube and divided   it by three. To find the percenta ge, I multiplied that decimal by 100. I drew a line graph, and then a line of best fit, which is sloping   downwards, negatively. This proves that the weight is getting lower as   the percentage of the sucrose concentration is getting higher. In my investigation I found a definite relationship between the 2   variables – weight and concentration of sucrose. Any increase in   sucrose concentration led to a decrease in weight. The prediction is supported by the evidence of the graph.Although   there is one anomaly, all the other results stand out and give a   straight line of best fit – exactly as I predicted. The point of   early plasmolysis is where the concentration of sucrose and potato   are even. There is no osmosis taking place at that point. As I said in   my plan, if the water concentration is lower in the potato than in the   sucrose solution, then water will pass from the sucrose solution into   the potato, and it will gain weight. If the re is a higher concentration of water in the potato, then the water will go out of   the potato and into the sucrose solution.This is because osmosis is   the movement of water molecules from a region of high concentration to   a region of low concentration, through a semi permeable membrane. The up raise of sucrose is the downfall of potato mass. [IMAGE] Osmosis In osmosis, water diffuses through a semi-permeable membrane. This diagram illustrates the concentrated sugar solution, separated   from dilute sucrose solution by a selectively permeable membrane. This   has pores (holes) in it which are very small, and selects what it   wants to let through i. e. small molecules.Water molecules are very   small. Each one is made of two hydrogen atoms and one oxygen atom. However, sugar molecules are many times larger. In potatoes, the pores   of the membrane only let the water through. There is a higher concentration of sugar molecules on the right-hand   side of the mem brane in the diagram, than in the left-hand side. Sugar   molecules would diffuse from the concentrated solution into the dilute   one until they were evenly spread out if there was no membrane, but   they cannot do this as the pores are too small for the sugar to get   through the membrane.Therefore, the small water molecules diffuse   into the concentrated sugar solution, to make it more dilute. This process is called osmosis. It is the diffusion of water molecules   from a place where they are in a higher concentration, to a place   where they are in a lower concentration, through a selectively   permeable membrane. Potato cells plasmolyse in concentrated solutions. This diagram   illustrates a plant cell[IMAGE] (which is similar to a potato cell) in   a concentrated solution. It will lose water by osmosis. The cytoplasm   and the vacuole will shrink.The cell membrane is semi-permeable and the vacuole contains a sucrose   solution. So when a cell is placed in distilled water (high   concentration) water will move across the semi-permeable membrane into   the cell (lower water concentration) by osmosis, making the cell   swell. This cell is called ‘turgid’. In potato cells, the cells would   increase in length, volume and weight because of the extra water in   the potato. If the potato was to be placed in a lower concentration, then the   opposite would happen, because water would move out of the cell into   the solution.If the solution is very concentrated, then a lot of water will diffuse   out of the cell. The cytoplasm and vacuole will keep shrinking, but   the cell wall will not as it is too stiff. As the cytoplasm shrinks   further and further into the centre of the cell, the cell wall gets   left behind. The cell membrane, surrounding the cytoplasm, tears away   from the cell wall. If this happens, the cell is said to be   plasmolysed. The potato will therefore, decrease in length, volume and   weight. Plasmolysis is the point where the membrane is totally detached from   its ell wall, and the potato is killed. Evaluation my experiment shows some accurate results. It concludes the experiment, and proves my prediction. My   final results were quite reliable; due to the precautions I took to make this  a fair test. The graph has a straight slope pointing downwards, which is the   clearest way to understand my prediction. All of them are not that   closely together, neither far away, so a line of best fit joins some   tips of the points, and causes it to go straight down.I have one anomalous result, which falls on 0 on the x axis. This   occurred in tube 5, which contained a concentration of 0. 4. Perhaps I did not   carry out that properly. These were the main problems in carrying out the experiment:- * Scales kept moving * Difficult to get out the potato from the core * Potatoes get stuck in tube. * Solution is still left after wiping the potato and the scales * Different scales * couldn’t control the temperature the point of early plasmolysis would not be valid.This is because   I have just plotted it on the graph on a line which suits my results. To prove that it is the right point, I would have to do another   experiment to find that out. The other evidence is likely to be valid, because as all the evidence   links to the results. My investigation is fair because I did not   change many things, expect the concentration of sucrose. I think that I have collected quite a lot of evidence to support my   conclusion. The result table is the main source of evidence.I could   try investigating with more percentages of sucrose concentration, the   size of the potato and have more short intervals between the sucrose’s. This would have a more spread to the results, and therefore, results   can be compared and evaluated more thoroughly. They would be very   accurate as well as reliable. As I have an anoma ly, my evidence may not be extremely correct. I   would have to do more research to what I have already done (in the   conclusion) on osmosis, and see what actually happens, and see if it   occurs in plant cells all the time.If I were to repeat the experiment, I would use a very accurate scale,   so that results would come out accurately and then I would have a accurate   average. The graph will be fairly accurate. I would also make sure   that the scale and the potato slices are properly wiped. This is   because if they are not wiped, the weight would increase, and will not   be accurate. I could use a syringe or a burette to measure the 10ml of   sucrose solution, because those two apparatus are very accurate.I would do several more experiments with bigger sizes of potatoes to   obtain more evidence to support my conclusion. I will also do some   research on osmosis, and this will make me certain of my evidence if I   have many to compare with. I will agree with the majority. Overall, I am very pleased with these results and with the evidence I   have so far, that osmosis occurs when there is a high concentration   and a low concentration, both aside a semi-permeable membrane. The   lower concentrated substance diffuses through the membrane to where   there is the higher concentrated substance.

Electoral College Pros and Cons

Electoral College Pros and Cons The Electoral College system, long a source of controversy, came under especially heavy criticism after the 2016 presidential election when Republican Donald Trump lost the nationwide popular vote to Democrat Hillary Clinton by over 2.8 million votes but won the Electoral College- and thus the presidency- by 74 electoral votes. Electoral College Pros and Cons Pros:Gives the smaller states an equal voice.Prevents disputed outcomes ensuring a peaceful transition of powerReduces the costs of national presidential campaigns.Cons:Can disregard the will of the majority.Gives too few states too much electoral power.Reduces voter participation by creating a â€Å"my vote doesn’t matter† feeling. By its very nature, the Electoral College system is confusing. When you vote for a presidential candidate, you are actually voting for a group of electors from your state who have all â€Å"pledged† to vote for your candidate. Each state is allowed one elector for each of its Representatives and Senators in Congress. There are currently 538 electors, and to be elected, a candidate must get the votes of at least 270 electors. The Obsolescence Debate The Electoral College system was established by Article II of the U.S. Constitution in 1788. The Founding Fathers chose it as a compromise between allowing Congress to choose the president and having the president elected directly by the popular vote of the people. The Founders believed that most common citizens of the day were poorly educated and uninformed on political issues. Consequently, they decided that using the â€Å"proxy† votes of the well-informed electors would lessen the risk of â€Å"tyranny of the majority,† in which the voices of the minority are drowned out by those of the masses. Additionally, the Founders reasoned that the system would prevent states with larger populations from having an unequal influence on the election. Critics, however, argue that Founder’s reasoning is no longer relevant as today’s voters are better-educated and have virtually unlimited access to information and to the candidates’ stances on the issues. In addition, while the Founders considered the electors as being â€Å"free from any sinister bias† in 1788, electors today are selected by the political parties and are usually â€Å"pledged† to vote for the party’s candidate regardless of their own beliefs. Today, opinions on the future of the Electoral College range from protecting it as the basis of American democracy to abolishing it completely as an ineffective and obsolete system that may not accurately reflect the will of the people. What are some of the main advantages and disadvantages of the Electoral College? Advantages of the Electoral College   Promotes fair regional representation: The Electoral College gives the small states an equal voice. If the president was elected by the popular vote alone, candidates would mold their platforms to cater to the more populous states. Candidates would have no desire to consider, for example, the needs of farmers in Iowa or commercial fishermen in Maine.Provides a clean-cut outcome: Thanks to the Electoral College, presidential elections usually come to a clear and undisputed end. There is no need for wildly expensive nationwide vote recounts. If a state has significant voting irregularities, that state alone can do a recount. In addition, the fact that a candidate must gain the support of voters in several different geographic regions promotes the national cohesion needed to ensure a peaceful transfer of power.Makes campaigns less costly: Candidates rarely spend much time- or money- campaigning in states that traditionally vote for their party’s candidates. For example, Democrats rarely campaign in liberal-leaning California, just as Republicans tend to skip the more conservative Texas. Abolishing the Electoral College could make America’s many campaign financing problems even worse.  Ã‚   Disadvantages of the Electoral College   Can override the popular vote: In five presidential elections so far- 1824, 1876, 1888, 2000, and 2016- a candidate lost the nationwide popular vote but was elected president by winning the Electoral College vote. This potential to override the â€Å"will of the majority† is often cited as the main reason to abolish the Electoral College.Gives the swing states too much power: The needs and issues of voters in the 14 swing states- those that have historically voted for both Republican and Democratic presidential candidates- get a higher level of consideration than voters in other states. The candidates rarely visit the predictable non-swing states, like Texas or California. Voters in the non-swing states will see fewer campaign ads and be polled for their opinions less often voters in the swing states. As a result, the swing states, which may not necessarily represent the entire nation, hold too much electoral power.Makes people feel their vote doesn’t matter: Under the Electoral College system, while it counts, not every vote â€Å"matters.† For example, a Democrat’s vote in liberal-leaning California has far less effect on the election’s final outcome that it would in one of the less predictable swing states like Pennsylvania, Florida, and Ohio. The resulting lack of interest in non-swing states contributes to America’s traditionally low voter turnout rate. The Bottom Line Abolishing the Electoral College would require a constitutional amendment, a lengthy and often unsuccessful process. However, there are proposals to â€Å"reform† the Electoral College without abolishing it. One such movement, the National Popular Vote plan would ensure that the winner of the popular vote would also win at least enough Electoral College votes to be elected president. Another movement is attempting to convince states to split their electoral vote based on the percentage of the state’s popular vote for each candidate. Eliminating the winner-take-all requirement of the Electoral College at the state level would lessen the tendency for the swing states to dominate the electoral process. Sources and Further Reference â€Å"From Bullets to Ballots: The Election of 1800 and the First Peaceful Transfer of Political Power.† TeachingAmericanHistory.org.Hamilton, Alexander. â€Å".†The Federalist Papers: No. 68 (The Mode of Electing the President) congress.gov, Mar. 14, 1788Meko, Tim. â€Å".†How Trump won the presidency with razor-thin margins in swing states Washington Post (Nov. 11, 2016).

4 Tips for Writing the Perfect University of Washington Essay

4 Tips for Writing the Perfect University of Washington Essay SAT / ACT Prep Online Guides and Tips The University of Washington is often ranked among public Ivy Leagues- that is, public schools with the academic clout and selectivity to elevate their reputations. So if you want to be a Husky, it’s not just about good grades and test scores. You’ll also need to prove yourself with a good University of Washington essay, combining your technical skill with your knowledge of the school and your reasons for wanting to attend to attract attention from admissions officers. But to do that, you need to know how to write great UW essays. The University of Washington uses the Coalition Application, which can be submitted to multiple schools and includes an essay section with several different prompts. The supplemental UW essay prompts are pretty standard, but we have all the helpful tips you need to make sure your application is set to impress. What's Included in the University of Washington Essay Section? Part of the Coalition app is answering a short essay question with a word count of 500. The University of Washington application also includes an additional required short response question of 300 words and an optional short essay of 200 words. Additional space is available, but it's recommended that you don't take it unless you absolutely need it. Show restraint when responding to UW essay prompts; it shows that you can be concise and follow directions, and you won't run the risk of volunteering too much information or making yourself memorable for the wrong reasons. That said, we'll cover some exceptions below! Set aside plenty of time to write and rewrite your essay. What Is the Short Answer Prompt? Once you've finished the Coalition Application essay, the University of Washington has an additional requirement for you- a short response question with a 300 word limit. UW is careful to say in their guidelines that while the Coalition Application and its supplemental sections have a word count,you should treat that as a maximum. The University of Washington suggests that concise writing is particularly valuable, and recommends that the Coalition Application be between 300 and 400 words rather than 500. Though they don't offer word counts for the other prompts, it's best to assume they're looking for short answers. Cutting out 100 words might feel excessive, but dotry to leave some breathing room within your essay rather than squeaking in right under the allotted 300 words. For the UW essay, there's just one required prompt: Our families and communities often define us and our individual worlds. Community might refer to your cultural group, extended family, religious group, neighborhood or school, sports team or club, co-workers, etc. Describe the world you come from and how you, as a product of it, might add to the diversity of the UW. UW offers a helpful tip right below the prompt: "Keep in mind that the UW strives to create a community of students richly diverse in cultural backgrounds, experiences, values and viewpoints."What this means is that UW wants to see students who are going to be right at home in that diverse student body. When answering this question, consider specifically what you might add to the community. What perspective do you bring? What traits make you a good fit? Some students might struggle with this, because it's easy to assume that UW means they're only looking for students from diverse backgrounds, such as students of color, LGBTQ+ students, or students of other marginalized identities. But the prompt doesn't at all mean that you have no chance if you don't belong to one of those communities. Students who fit into those groups may have an easier time of identifying what diversity they bring to the school, but belonging to a marginalized group doesn't in any way guarantee admission. The University of Washington is looking for students who foster and embrace diversity, so be sure to think on those terms. Consider, for example, how your rambunctious family Thanksgiving taught you to embrace chaos, and how your ability to stop Great Aunt Kathy from throwing mashed potatoes at your cousin for bringing up a sensitive political issue translates to a college campus. Think about how having several different friend groups in high school- nerds and jocks, for example- taught you to move between spaces while always being your authentic self. For students whoare of marginalized backgrounds, the same advice still applies. You likely have different lived experiences than other students, but UW wants to know exactly what you're going to bring to the student community. You can discuss advocacy work, for example, or how your less advantageous upbringing taught you to work hard for everything you want. Always come back to that request to "Describe the world you come from and how you, as a product of it, might add to the diversity of the UW." Embracing diversity isn't just about being a member of a marginalized community; think about how you participate in your social groups and how your experiences before college will help you have and, more importantly,create a good experience for others.Again, it's not about what identity you do or do not have, but rather about how you build communities and support others. UW is a big school, but you'll still be interacting with people from all walks of life on a daily basis- how will you navigate difference and fit into a student body made up of so many different people? Let UW know exactly how they're going to help you make a slam dunk. What Should You Add in the Additional Information Section? The University of Washington essay prompt offers an additional 200 words for you to talk about yourself and your unique circumstances. This section is optional, and UW advises that the following types of students may benefit from taking the opportunity to expand on their application: You are hoping to be placed in a specific major soon A personal or professional goal is particularly important to you You have experienced personal hardships in attaining your education Your activities have been limited because of work or family obligations You have experienced unusual limitations or opportunities unique to the schools you attended Even if you don't fall into one of these groups, it's wise to take advantage of this additional space. Everyone has a goal that's important to them, after all, which is explicitly included in the second bullet point. However, you only have 200 words, so you'll need to make them count. Again, UW mentions earlier in their guidelines for the writing section that they value brevity. Don't try to hit that 200 word mark just because it's there- use only the space that you need. Be succinct and clear about any obstacles you've overcome, what draws you to your major, and what makes you want to attend UW specifically. For example, say you, like many prospective UW students, are interested in becoming a doctor. The University of Washington is highly ranked among medical schools, so saying you want to go there because it's a good medical program isn't doing any legwork in setting you apart from other students. Instead, use this space to talk about why your major is important to you, and why placement at UW is going to help you achieve more. Following the medical school example, maybe your primary care doctor was a UW grad, and the depth of care they gave you convinced you it wasn't just what you know as a doctor that matters, but also how you deploy that knowledge. Because you want to make the same difference in somebody's life, you're applying to UW to have access to the same information and instruction that your doctor did. In essence, use this space to explain something you didn't have space to explain elsewhere, but make it count. Be careful not to retread the same ground! This is an opportunity to flesh out your application, not to hammer something home. If you haven't had a chance to discuss that your grades slipped sophomore year because of a family illness or that your local library has a special box for you because of all the engineering books you keep checking out, now's the time to mention it. Keep it short, direct, and original- the admissions office is reading this supplemental section in the context of your application, so you don't need to revisit anything. Careful not to fall into the trap of using more space than you need. Should You Use the Additional Space? How? It can be tempting to use UW's provided additional space to squeeze a few more words into your application, but resist it. Those word counts are there for a reason, and you should aim to get under, not exceed them. That said, there are legitimate reasons to use this additional space. The University of Washington mentions clarifying answers from elsewhere on the application or providing extra information to the admissions office. If you have special considerations as a student that you want to be sure the office is aware of, but that you didn't discuss in the previous additional information section, you could include that here. You could also include relevant awards or distinguishing recognition you've received. If your high school had an unusual grading system, it might be useful to explain how to interpret your grades. But don't take the lack of a word requirement to mean that you can talk about whatever you want, or that you should use this space to expand on one of your earlier essays. Use only what you need, no more. Try to keep it under 200 words. Brevity is important! Want to build the best possible college application? We can help. PrepScholar Admissions is the world's best admissions consulting service. We combine world-class admissions counselors with our data-driven, proprietary admissions strategies. We've overseen thousands of students get into their top choice schools, from state colleges to the Ivy League. We know what kinds of students colleges want to admit. We want to get you admitted to your dream schools. Learn more about PrepScholar Admissions to maximize your chance of getting in. Tips and Advice for the University of Washington Essay Specific advice for each prompt will help you craft a better essay, but there are some general things to keep in mind, too! Proofread Your UW Essay It's a small space, so there should be fewer mistakes, right?Nope. You still need to proofread. Consider writing it by hand and then transcribing that draft- it feels like more work, but turning written words into typed words is a great way to spot mistakes. Go through multiple drafts, and read your essay out loud before you submit it. Don't let typos get through; no matter how good the rest of your essay is, a typo will make it look as though you didn't edit it at all, suggesting you didn't take your time. Do everything you can to avoid the perception that you wrote it up without thinking! Get Editing Help Seek feedback from those you trust, not just those who are going to tell you your essay is great. You want your essay to be as good as possible, so let people who are going to be truthful with you make suggestions. They'll help you write a better essay, and a fresh pair of eyes can spot holes in your logic and errors you might miss after repeated revisions. Think about going to teachers or counselors rather than friends or family. Though they undoubtedly want to help you, they might also be worried about hurting your feelings. Someone who's a little more objective but still wants to see you succeed is the kind of editor you want. Be Specific Always remember that you're applying to the University of Washington. Don't just write an essay that could impress any college (that's what the Coalition Application essay is for!); write one that ties into UW's core values. Their vision includes an emphasis on discovery, research, community, optimism, and even celebrating the natural beauty of the Pacific Northwest. All of these are angles ripe for exploration in your essays. If one of your answers is lacking, try folding a little of this vision into it by finding parts of your essay that match the mission and making them stand out more. Read Essays That Got Students Into UW It can be tricky finding essays that got applicants into UW, but it can also be a great indicator of what the school values in an application. Take these essays by Issa Rice. Though written for a different set of prompts, it's not hard to see why Rice was accepted. Notice how his essays could only come from him; they're so tied to personal experience that it's unlikely anyone else would have the same essay. That's the kind of personalization you want to strive for. Your essay should speak about your own unique experience and leave the admissions office with a clearer picture of who you are as a person, not just as a collection of grades and test scores. What's Next? Crafting a perfect essay is just one part of the admissions process to the University of Washington. Because UW is a moderately selective school, you need to be aware of all admissions requirements before applying to be sure that your application is up to snuff. As you're writing and rewriting your UW essay, be sure that it meets all the guidelines of a good college essay in addition to the UW requirements. A little extra polish will go a long way to cementing your application in the admission office's memory! If you're struggling to understand why UW uses the Coalition App and what that means, never fear! We have all the information on what distinguishes one application system from another, helping you plan your college applications with less stress. Want to write the perfect college application essay? Get professional help from PrepScholar. Your dedicated PrepScholar Admissions counselor will craft your perfect college essay, from the ground up. We'll learn your background and interests, brainstorm essay topics, and walk you through the essay drafting process, step-by-step. At the end, you'll have a unique essay that you'll proudly submit to your top choice colleges. Don't leave your college application to chance. Find out more about PrepScholar Admissions now:

Free Essays on Americas Press

A Brief History America's press has never been perfect. Far from it. Our first newspapers were highly partisan, mean-spirited and completely unprofessional by today's standards. But crude as they were, these so-called "scandalmongers" served as the public's watchdog of government and of its powerful friends, despite an early misguided effort through the Alien and Sedition Act to neuter the watchdog. The more enlightened of our founding fathers understood that an independent, free and unfettered press was critical to engaging the populace in its democracy, and that such engagement was essential for representative government to work. They intuitively knew that an independent press would evolve as the country evolved. That there would be - that there needed to be a multitude of voices to represent the diverse opinions, interests and backgrounds of the population. The key to preserving this leg of the democracy stool was to protect it from external controls, whether from the government through laws restraining its freedom, or from individuals or businesses chilling its independence through harassing litigation. The principle was so important it became the stepping off point for the Bill of Rights. The First Amendment to the United States Constitution, and the Supreme Court's interpretation of it through the last century. All of which ensured the evolution of a diverse and truly free press. The expansion of our press, paralleled the expanded participation of our citizens in their own government. This was critical. Without expanded inclusion, American democracy would have failed because so many of our people would not have had a stake in its survival. Until the last decade or two, this evolution was generally for the better. It fostered individual rights, more inclusion in the social, economic and political life of the country, and it spurred greater standards of public accountability and ethical behavio... Free Essays on America's Press Free Essays on America's Press A Brief History America's press has never been perfect. Far from it. Our first newspapers were highly partisan, mean-spirited and completely unprofessional by today's standards. But crude as they were, these so-called "scandalmongers" served as the public's watchdog of government and of its powerful friends, despite an early misguided effort through the Alien and Sedition Act to neuter the watchdog. The more enlightened of our founding fathers understood that an independent, free and unfettered press was critical to engaging the populace in its democracy, and that such engagement was essential for representative government to work. They intuitively knew that an independent press would evolve as the country evolved. That there would be - that there needed to be a multitude of voices to represent the diverse opinions, interests and backgrounds of the population. The key to preserving this leg of the democracy stool was to protect it from external controls, whether from the government through laws restraining its freedom, or from individuals or businesses chilling its independence through harassing litigation. The principle was so important it became the stepping off point for the Bill of Rights. The First Amendment to the United States Constitution, and the Supreme Court's interpretation of it through the last century. All of which ensured the evolution of a diverse and truly free press. The expansion of our press, paralleled the expanded participation of our citizens in their own government. This was critical. Without expanded inclusion, American democracy would have failed because so many of our people would not have had a stake in its survival. Until the last decade or two, this evolution was generally for the better. It fostered individual rights, more inclusion in the social, economic and political life of the country, and it spurred greater standards of public accountability and ethical behavio...

The GDP per unit of energy use Essay Example | Topics and Well Written Essays - 1250 words

The GDP per unit of energy use - Essay Example According to Pimentel (2013), data from populous and industrialized nations like China and India will serve the purpose of substantiating the relationship between the variables mentioned above. In this case, stage three of the term paper involves a comprehensive literature review that seeks to acquire relevant information about the underlying hypothesis. Literature Review Introduction Since the paper seeks to examine nations’ economies from the perspective of domestic product and energy consumption, then it is inherent to clarify certain terminologies and abbreviations that will be used extensively in the essay. First, gross domestic product, commonly referred to as GDP, remains one of the essential indicators of a nation’s economic status. According to Meyers (2010), GDP is the cumulative monetary value of all goods and services produced and offered by a nation’s population over a period of one year. Secondly, energy intensity is a terminology referring to effic iency of energy use within a given economic setting. The intensity is obtained by determining the ration between total energy consumption and the total gross domestic product. ... rding energy intensity within a nation are gaining attention after World Bank projected that by 2050, the world’s fossil fuels will have reduced by approximately 35%. According to Mely and Chang (2012), such prediction insinuates that reduction in fossil fuels will create a subsequent increase in demand for the same commodity. Consequently, nations whose economy is energy dependent may experience diverse difficulties in adjusting to the significant drop in fuel content across the world. In this context, it is undeniable that third world nations in Africa relies more on agriculture and tourism as the main source of their gross domestic product. However, populous and industrialized countries like China and India rely on manufactured exports and skilled services. Bosselman (2010) says that in China, industries and skilled services like road constructions are known to consume a lot of energy. GDP per Unit of Energy Despite the fact that manufacturing and service industries in Chin a and India generating huge economic output from every given energy unit, they still face a threat with regard to diminishing oil reserves. For example in 2005, China yielded a GDP of 3.7 for every kilogram of oil consumed. India yielded a slightly higher GDP of 5.3 for the same mass of oil consumed. On the contrary, the adjacent Republic of Hong Kong posted a GDP of 21.2 for every kilogram of oil used within the same period. Switzerland, which is known to being a less populous nation than India, posted a GDP of 12.3. Based on these figures, one can develop an insight on the energy efficiency within the four nations compared above. From the figure of 3.7 GDP per kilogram of oil consumed, then it is undeniable that China has lower energy efficiency. On the other hand, Hong Kong can manage to

Global Strategy Management - Cultural Considerations Assignment

Global Strategy Management - Cultural Considerations - Assignment Example Religion is another cultural consideration that I would take into account in my strategy to expand into India. An example of how I would factor in religion in my strategy is to recommend that company representatives do not order beef in restaurant because the cow is a holy creature in Hinduism and Hindus would feel insulted and this would impact negatively on our business in the country. Festivals and holidays are another cultural consideration in strategizing for entry into India. There are many national and religious celebrations that Indians observe and I would recommend that our business be closed during some of those celebrations because it would show honor for these events (Millar, 2006). Another cultural consideration in expanding business into India is the many languages used by Indians. I would be keen in cautioning that the various Indian ethnic groups speak different languages and as such, business representatives should be careful to learn the meaning of different Indian words before using them in doing business. Respect for the elderly is another cultural consideration and my strategy would also recommend that our business representatives show respect to elderly customers in order to enhance the success of the corporation (Cullen & Parboteeah, 2014). This would not impact our current strategy negatively but will make it more versatile. This is because as much as we have spelt out all the things the corporation will need to launch business in India and start operating, the endeavor cannot succeed unless there is a way to forge a working alliance with the locals. Taking India’s cultural considerations into account in our strategy will make it versatile particularly because it will match well with John and Deborah’s corporation’s exceptional customer service for which it is reputed in the industry. A cultural consideration that helps cultivate a close relationship with Indian customers would help vary our activities in order to suit the

Compare the causes of European, African, and Asian emigrations to Essay

Compare the causes of European, African, and Asian emigrations to North America - Essay Example Pulling factors include job opportunities, religious and political reference. The essay will try to discuss the causes of different races to North America and the reasons for immigrations. â€Å"Migration is not always voluntary† (Dahlman and Renwick 235). For instance, Africa America migration to the North America was due to conflict in South America. African Americans migration was suffering under the Jim Crow laws that segregated blacks from the white. After the civil war, cotton prices depreciated in the South as the weevils destroyed most of the crop that highly affected the economy causing African America to migrate to the North. Some countries got rid of unwanted prisoners by taking them to other countries, the prisoners however settled in these areas, as they could not go back to their countries. Millions of people left Europe during the time of empire and colonies and settled in North America. â€Å"This emigration was driven by the rapid growth of the European population during its demographic transition† (Dahlman and Renwick 241). Harsh living conditions in their original homes contributed to the migration. There was unending famine in some parts of Europe due to harsh weather conditions and this highly contributed to the migration. Asian birthrate and poor economic growth pushed more people to North America where the economic was booming. Most Asians relocated to North America looking for peace because of the World War 1. North America changed rapidly due to the migration. â€Å"European exploration and settlement had a devastating effect on the indigenous peoples, meaning native populations† (Dahlman and Renwick 244). For instance, they natives had a low immunity to diseases carried by the immigrants, which cause a high death rate in the first century. The immigration causes intolerance attitude from the natives and this caused immigrant is put in smaller reservations. Many native intermarried with the immigrants,

The Ddoctrine of Judicial Precedent depends on the Hierarchy of the Essay

The Ddoctrine of Judicial Precedent depends on the Hierarchy of the Courts - Essay Example In case similar cases emerge in the prospect, similar rules or rationale is utilized in conveying justice through legal decisions. The doctrine finds basis on stare decisis meaning that considering previous decision made on similar cases. A decision made at some point in law is considered applicable to cases that bear similar facts. For the doctrine to function in an effective manner, it is necessitated that point of law within certain cases is established. During conveyance of justice, the judge ought to offer the rationale under which he or she provides certain judgment and not another. The doctrine presents general rule where all courts are required to follow the same rationale in delivering decisions that were developed in courts that bear higher ranks (Mitchell & Dadhania 2003, 61). The doctrine is reliant on the chain of command of the court system, previous case records and the attitude or approaches that the judges utilize. The hierarchy of the court system in the English con text offers a better comprehension of precedent doctrine. The courts are organized, in terms of their capabilities or power, to command. The hierarchical structure bears five divisions under which the precedent is applied. These divisions offer judgments in relation to the cases carried out in previously from a superior court. The precedents that transpire in higher courts are considered applicable to lower and middle courts without any doubt. Therefore, decisions undertaken can be carried out without further probe into the cases, as long as the material facts and other facts are almost similar to another case undertaken in the past (Mitchell & Dadhania 2003, 62). The doctrine is reliant on the hierarchy that the court system presents in all its operations. Every court bears a given standing in relation to certain cases with respect to other courts thus affecting the provision of decisions on certain cases. These hierarchical systems ought to be considered in making decisions that i nvolve the precedent doctrine. The lower courts can comfortably apply decisions presented by the highest ranked courts. Similarly, decisions that emanate from House of Lords are applicable to the rest of the courts within the legal arrangement with the exemption of the House of Lords (Kennedy 1994, 1). Therefore, its decisions find appliances to all systems of legal arrangements but the decisions made by the house cannot be applied to cases that concern it. Supreme Court is considered top in the rank with regard to the legal arrangement prevalent in English Law. Previously, the Supreme Court functioned as the House of Lords although this was changed in 2009 (OUP 2011, 11). However, the powers were never altered meaning that only the name changed. The Supreme Court comprises of 12 justices with fives of these being independent of any previous precedents. That is they are not bound to pursue decisions made in any previous cases. In addition, their judgments are applicable to the rest of courts that lie below them. In practicality, justices in this legal level are likely to follow their decisions that they had previous offered in similar cases. In order for them to change their personal judgments, a vivid reason ought to crop up. Additionally, these justices preside over judgments from Commonwealth nations. Under such circumstance, the justices are considered as the Privy Council (OUP 2011, 11). In principle, the decisions developed by the Privy Council find no application in

Defining Marketing Paper Essay Example | Topics and Well Written Essays - 1000 words

Defining Marketing Paper - Essay Example However, with the little background that I gained, I have learned that marketing encompasses a wide array of activities aside from selling products and services. In fact, marketing is a lot more complicated than it seems. It starts at determining the needs of customers and creating a product together with the proper strategies to bring it to them. Now, my definition of marketing is the satisfaction of customer needs through the provision of products and services at a profit. The definition of marketing varies from organization to organization. The Chartered Institute of Marketing (CIM 2007) defined marketing as the â€Å"management process responsible for identifying, anticipating, and satisfying customer requirements profitably.† This is a very broad definition of marketing. It highlights three important aspects that marketing accomplishes. First, it recognizes the purpose of business organizations to design products which satisfy customer requirements. Marketing does not just involve offering any goods and services but business organizations should strive to offer those which offer customer value. Second, it stresses the aim of business organizations to generate profit from its operations. Thus, the definition of CIM involves assessing the marketing strategy which will be mutually beneficial for customers and companies. Business organizations as this definition implies are profit maximizing entities. Lastly, this definition highlight that marke ting is not just about providing the current needs by â€Å"anticipating† the future requirements of the markets. In summary, the CIM’s definition of marketing balances the satisfaction of customer and profit maximizing goal of business organizations. According to the American Marketing Association (AMA 2007), â€Å"marketing is the process of planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services to

How comprehensive and abstinent only sex education differ and how Research Paper

How comprehensive and abstinent only sex education differ and how comprehensive is more informative and can help decrease the te - Research Paper Example However, differences on how to approach this subject have also emerged as a result as one group argues for the more traditional promotion of abstinence before marriage while the other advocates for a more direct approach of teaching where the youth are educated on all aspects concerning sex including protection against pregnancies and sexual transmitted diseases (Cook & Clarke 228). Though the more orthodox promoters of sex education are worried that too much information at an early age may not be the wisest decision, the question remains what withholding information on topics such as safe sex will have on the youth as overall as studies have shown that more and more teenagers are engaging in sexual activities and thus if this trend cannot be stopped would it not be better to ensure that they are taking the needed precautions to protect them from unplanned pregnancies and contraction of STIs (Sexually Transmitted Infections). Statistics have shown that the average age that individual s are losing their pregnancy is between 14 – 16 years of age which means that sex education will need to be introduced at an early age if it is to have the desired effect. This statistic is alarming considering that in the earlier years, studies conducted had shown that the average age at which virginity was lost was between 16 -18 years. This shows that a decrease of two years has taken place between the times these two studies were conducted; there is also fear that the age may continue decreasing which is a disturbing thought (Ott & Santelli 425). Abstinence only programs involve sex education with regard to its avoidance until one reaches the age of maturity (18-21 years) or preferably until one is married. This program focuses on encouraging the youth to shun any form of sexual interaction and teach on the dangers of unprotected sex such as unplanned pregnancies and incurable STIs in a bid to scare the youth straight so to speak. They do not offer any alternatives on how one is able to practice safe sex if they do decide to engage in such activities and mostly paint a scary picture on the consequences of having sex at an early age. The program has mostly been promoted by the conservative groups in the country including most religious factions as they feel any other mode of sex education will be in effect promoting the engaging of sexual activities among the youth (Cook & Clarke 236). Comprehensive sex education son the other hand focuses on all aspects involving sex education including its biology, human sexual behavior and the practice of safe sex as an alternative option. This type of sex education though considered unorthodox by the conservative groups have proved to be more effective within the schools as compared to the abstinence only programs in terms of preventing teen pregnancies. Comprehensive sex education includes teaching the use of condoms and other prevention

The Ddoctrine of Judicial Precedent depends on the Hierarchy of the Essay

The Ddoctrine of Judicial Precedent depends on the Hierarchy of the Courts - Essay Example In case similar cases emerge in the prospect, similar rules or rationale is utilized in conveying justice through legal decisions. The doctrine finds basis on stare decisis meaning that considering previous decision made on similar cases. A decision made at some point in law is considered applicable to cases that bear similar facts. For the doctrine to function in an effective manner, it is necessitated that point of law within certain cases is established. During conveyance of justice, the judge ought to offer the rationale under which he or she provides certain judgment and not another. The doctrine presents general rule where all courts are required to follow the same rationale in delivering decisions that were developed in courts that bear higher ranks (Mitchell & Dadhania 2003, 61). The doctrine is reliant on the chain of command of the court system, previous case records and the attitude or approaches that the judges utilize. The hierarchy of the court system in the English con text offers a better comprehension of precedent doctrine. The courts are organized, in terms of their capabilities or power, to command. The hierarchical structure bears five divisions under which the precedent is applied. These divisions offer judgments in relation to the cases carried out in previously from a superior court. The precedents that transpire in higher courts are considered applicable to lower and middle courts without any doubt. Therefore, decisions undertaken can be carried out without further probe into the cases, as long as the material facts and other facts are almost similar to another case undertaken in the past (Mitchell & Dadhania 2003, 62). The doctrine is reliant on the hierarchy that the court system presents in all its operations. Every court bears a given standing in relation to certain cases with respect to other courts thus affecting the provision of decisions on certain cases. These hierarchical systems ought to be considered in making decisions that i nvolve the precedent doctrine. The lower courts can comfortably apply decisions presented by the highest ranked courts. Similarly, decisions that emanate from House of Lords are applicable to the rest of the courts within the legal arrangement with the exemption of the House of Lords (Kennedy 1994, 1). Therefore, its decisions find appliances to all systems of legal arrangements but the decisions made by the house cannot be applied to cases that concern it. Supreme Court is considered top in the rank with regard to the legal arrangement prevalent in English Law. Previously, the Supreme Court functioned as the House of Lords although this was changed in 2009 (OUP 2011, 11). However, the powers were never altered meaning that only the name changed. The Supreme Court comprises of 12 justices with fives of these being independent of any previous precedents. That is they are not bound to pursue decisions made in any previous cases. In addition, their judgments are applicable to the rest of courts that lie below them. In practicality, justices in this legal level are likely to follow their decisions that they had previous offered in similar cases. In order for them to change their personal judgments, a vivid reason ought to crop up. Additionally, these justices preside over judgments from Commonwealth nations. Under such circumstance, the justices are considered as the Privy Council (OUP 2011, 11). In principle, the decisions developed by the Privy Council find no application in

How comprehensive and abstinent only sex education differ and how Research Paper

How comprehensive and abstinent only sex education differ and how comprehensive is more informative and can help decrease the te - Research Paper Example However, differences on how to approach this subject have also emerged as a result as one group argues for the more traditional promotion of abstinence before marriage while the other advocates for a more direct approach of teaching where the youth are educated on all aspects concerning sex including protection against pregnancies and sexual transmitted diseases (Cook & Clarke 228). Though the more orthodox promoters of sex education are worried that too much information at an early age may not be the wisest decision, the question remains what withholding information on topics such as safe sex will have on the youth as overall as studies have shown that more and more teenagers are engaging in sexual activities and thus if this trend cannot be stopped would it not be better to ensure that they are taking the needed precautions to protect them from unplanned pregnancies and contraction of STIs (Sexually Transmitted Infections). Statistics have shown that the average age that individual s are losing their pregnancy is between 14 – 16 years of age which means that sex education will need to be introduced at an early age if it is to have the desired effect. This statistic is alarming considering that in the earlier years, studies conducted had shown that the average age at which virginity was lost was between 16 -18 years. This shows that a decrease of two years has taken place between the times these two studies were conducted; there is also fear that the age may continue decreasing which is a disturbing thought (Ott & Santelli 425). Abstinence only programs involve sex education with regard to its avoidance until one reaches the age of maturity (18-21 years) or preferably until one is married. This program focuses on encouraging the youth to shun any form of sexual interaction and teach on the dangers of unprotected sex such as unplanned pregnancies and incurable STIs in a bid to scare the youth straight so to speak. They do not offer any alternatives on how one is able to practice safe sex if they do decide to engage in such activities and mostly paint a scary picture on the consequences of having sex at an early age. The program has mostly been promoted by the conservative groups in the country including most religious factions as they feel any other mode of sex education will be in effect promoting the engaging of sexual activities among the youth (Cook & Clarke 236). Comprehensive sex education son the other hand focuses on all aspects involving sex education including its biology, human sexual behavior and the practice of safe sex as an alternative option. This type of sex education though considered unorthodox by the conservative groups have proved to be more effective within the schools as compared to the abstinence only programs in terms of preventing teen pregnancies. Comprehensive sex education includes teaching the use of condoms and other prevention