Descartes & Hume Essay Example for Free

Descartes Hume EssayRene Descartes was a rationalist, meaning he thought that reason alone, not paladin or experience, was the source to ca-caing knowledge about the eternal uprightnesss of the universe, such(prenominal) as mathematics, epistemology, metaphysics and the human race of God. He excluded physics from this list, admitting that knowledge of physics only comes through experience (Descartes). Regardless, his rationalistic epistemology made it so that Descartes could only accept the truth about something if it was based upon a principle that was clearly and distinctly certain. Innate, a priori knowledge is fundamental to Descartes philosophy.A priori refers to any knowledge that is attained without appealing to sensation (OConnor, Class Notes). Being a rationalist, he completely doubted every sensory experience he had ever had. Sensation is ever-changing and sometimes misleads or deceives us, so according to Descartes, trusting in an experience of sensation to provi de us with any kind of universal truth would be foolish (Descartes). Whereas rationalism flat focuses on reason as world the only way to attain knowledge about the world, empiricism concentrates fully on all knowledge being a posteriori, or attained through experience and sensation.In an obvious way, David Humes empiricist epistemology directly contrasted Descartes rationalism, specifically by how he believed humans gutter attain knowledge. According to Hume, humans understand the world by experiencing different perceptions impressions/sensations and ideas/thoughts. The amount of force and vivacity of the perception allows humans to differentiate between the two. Impressions and sensations are more physical and lively since they are a product of direct experience. Ideas and thoughts are simply weak recreations of the original impressions that were perceived.While Descartes believes that certain ideas are innate, such as the existence of God, Hume absolutely denies the possibilit y of innate ideas. He claims that humans could never fully know or comprehend anything beyond our impressions. If an impression is not perceived, then it cannot be acknowledged. Since our knowledge is limited to the impressions we perceive, we have no real way of comprehending causality, instead it is often confused with correlation. Cause and effect events tend to occur in compressed temporal order, but that does not mean we can know whether those events are intrinsically related or not.Instead, we can only place our faith in the customs and habits of human life. Oppositely, Descartes believed we gain knowledge a priori, and we can only know that which we have clear and distinct justification for. In order to relieve what we know, we cannot appeal to anything except for reason. Lastly, we must judge those justified ideas by applying Descartes specific and logical method of reflection. Thusly, by accepting Descartes method, the universal and eternal truths of the world can be know n.

Human Resources Perspective Essay Example for Free

Human Resources Perspective EssayIntroductionFor small and large businesses alike, the human resources or personnel function quarter be reformatory for much more than simply processing payroll or handling the open enrollment season once a year. Human resources plays an essential usance in developing a gilds strategy as well as handling the employee activities of an shaping. Human resources bath also provide human capital hold dear to the organization, much(prenominal) as Utiliscan. Without this, a company is at potential risk for lost profits. Budget control is another primary function of human resources. This prevents undue spending, through developing methods for keeping the workforce associated cost at heart perspective of the companys goals. This also includes negotiating rates for benefits and health wish well coverage in conjunction with setting competitive and realistic wages. Throughout the remainder of this paper, we provide discuss the results of Utiliscans employee survey and what steps Paul could have taken toward meliorate Utiliscan as the Human Resource Director.Survey Results Are InUpon completion of every survey, it is important to post the results for all employees and management to see. The results should be consolidated with a task assigned and a well-developed plan of action. This is an opportunity to develop the corps values of the company leadership, as well, build growth within the company. Take the duration to prioritize company goals, to include expectations of the employer and employees. Tackle the big and the ugly up front by making a statement. After all, your goal is to make the company successful and show growth through opportunity.Result 1 56% of Utiliscan felt their benefits were below average or poor. task Identify comparable benefits packages to toy the company needs aswell the employee Action Studying the labor market, employment trends and salary analysis based on job functions will serve up Paul with Util iscan, as it is a small business, creating budget constraints. . As the human resources director, Paul should negotiate better rates. His responsibility is to find health coverage and proffer package incentives to his employees. A good example of this, high bore insurance that includes low premiums for his employees with high percentage rates of protection. American red-hot Cross Blue Shield provides medical, dental, and hearing protection at reasonable rates for companies. Aside from medical requirements, Paul should address salary, wages and retirement benefits packages with his employees. Fidelity is an example of a investment firm that allows parole deductions for employees to save money and earn market based profits and well stock option growth.Many companies in new(a) America now provide a 401k match plan. 5% to 6% match is a good comparable rate to start with. Result 2 55% felt safe, with little danger of occupational hazards associated with their physical environment. Th ere were comments, presumably from the 45% who did not feel safe, that some of the utility plants where they worked on installations were not as safe as they should be. Task Identify safety hazards within and around the work environment. Action Conduct training and development of employees and supervisors. Needs assessments for the organizations current workforce to determine the type of skills training and employee development are necessary to improve skill sets. This includes qualifications, licensing and documentation of certifications. A company such as Utiliscan must ensure their employees meet specifications to insure quality productions levels, at the same time improving overall safety of the organization.Many companies identify hazards within the workplace and address them through education of their employees. It is much less expensive than the cost to hire additional staff or more qualified candidates. In addition, its a strategy that also can reduce turnover and improve em ployee retention. Result 3 74% felt there was little descent between their cognitive process and their pay. There were numerous comments that performance reviews hadnt been done on time or hadnt been done at all. Other comments indicated unequivocal treatment and favoritism of some employees. Task Identify the root cause for lack of performance appraisals and employee development programs. Build and mentorship programto better support Utiliscans employee foundation. Action Through Performance Improvement, Training and Development Paul can develop performance management tools. This will enable Paul and his managers to measure the performance of their employees and provide feedback. This is a developmental tool to improve the employee skills and expertise. If performance appraisals are not completed then the potential for employees whose performance to fall below the employers expectations can continue.This leads to waste through payroll activities and low-performance employees. Pe rformance appraisals should be conducted monthly or quarterly with a final annual appraisal to determine potential for publicity or retain ability. Result 4 89% felt there were few if any opportunities to improve their skills and 87% responded there were no promotion opportunities. Task Develop a mentorship program and identify key developmental positions that will be forecasted. Action Paul can focus his efforts toward performance management systems. Constructing a plan that measures performance, employees develop specified skill sets in order to become more qualified for potential promotion opportunities. At the same time, Paul can begin succession planning. This enables the company to identify key potential candidates to fill key developmental positon. This is done through identifying employees with the promise and requisite capabilities to eventually rebirth into leadership roles with the company.This is an important function as it can guarantee the organizations stability and future success. Result 5 78% of the employees were satisfied with their working conditions and they enjoyed freedom and tractableness to perform their jobs without strict supervision. 70% felt their workloads were adequate not too heavy, not too light Task Despite the overall content military posture toward working conditions and enjoyment of the employees daily work routines, there is always ways to improve the overall employees satisfaction. Identify a way to seek employees thoughts and ideas of how to make the work place a better environment.Action Over all employee satisfaction can better the work place and improve the quality of life within the company. Happy employees work harder and produce more. This leads to more money for the company to grow. Paul should place a suggestion box to assist in identifying key components that his employees are requesting to make their work experience better. Some of their ideas maylead to greater levels of quality, production, and even prof its. Another option is to continue with carefully intentional employee surveys, focus groups and an exit interview strategy to determine key components of employee dissatisfaction and addresses those issues to motivate employees.Corporate ImageThe employer who maintains steadfast principles, embraces change, accepts and breeds the companys philosophy and business principles will win every time. Businesses want to be known as the company to work for or Employer of Choice. This is the company that receives recognition for the way they take care of their employees and care for them. These are the companies that employees find balance. Paul working in human resources can develop the tools to identify balance through recruiting the nearly qualified applicants, selecting the most suitable candidates and retaining the most talented employees.ReferencesSharon Armstrong and Barbara Mitchell (2008). The Essential HR Handbook A Quick and Handy Resource for Any Manager or HR victorWeb Link h ttp//www.hrmasia.com/case-studies/Mathis, R.L., Jackson, J.H. (2014). Human Resource Management 14th Ed. Stamford, CT Cengage Learning.

An introduction to European cuisine

An introduction to europiuman cuisineEurope is a unadulterated which is bordered by the Arctic ocean to the north, to the west lies the Atlantic Ocean, the Caucasus mountains and the Caspian sea and Black sea forms the southeast boarders,the Ural mountains and the Ural River is positioned in east of Europe and to the south lies the Mediterranean Sea. Europe stands as the worlds second smallest unmixed in relation to its size .Population wise Europe is the second biggest continent after Asia. European history is precise vast which begins from the Bronze Age with enormous cultural and economic achievements. Ancient Greeks marks the origin of western culture and the Roman Empire spanned the entire continent for several centuries. With the decline of the Roman Empire Europe entered a long period of stasis known as the Dark Ages, which came to end with the rise of Renaissance and bracing Monarchs, which began the period of exploration, discoery and increase in the scientific knowledg e. A large colonial empire was built by the European nation at the fifteenth century, particularly France, Britain, Spain and Portugal with enormous holding in Asia, Africa and the Americas. With the rise of the Industrial Revolution in Europe at the 18th century, created abundanter general prosperity and similar increase in the population. With the end of World war two and till the end of cold war two major political and economical blocks split up the Europe which was the Capitalistic countries in the Western Europe and the Communist nations in the Eastern Europe. Presently geographic Europe comprises 45 countries.The European climate rest temperate and mild, with cool summers and cold winters. Generally, if we compare different places on the same latitude with places on the same latitude in Europe, we would label that places in Europe have a more favorable climate than places elsewhere in America, Asia or Africa. If we compare the average January temperatures of Berlin, Calga ry and Irkutusk- lying in the Asian region of Russia, we would nonice that the temperature in Berlin is about 8 and 22 degrees Celsius higher than temperatures in Calgary and Irkutusk respectively. The main reason for this climate winds from the Atlantic Ocean. Warm winds sweep the whole continent and pass the continent mildly warm. Ocean currents carrying warm waters from the Gulf of Mxico have a major role in this natural phenomenon. Since there is not mountain barrier in Europe, which is large enough to stop these winds from sweeping across the continent, and since or so of the continent is within the range of 300 miles from the Atlantic Ocean, these currents simulate the climatic conditions of the whole continent. Therefore, Europe climate is quite the same throughout the continent. Northern Europe climate, naturally, has hourlong and cooler winters compared to the southern part of the continent. Winters are colder and longer in the East as compared to the west. Summers are shorter, but hotter in the East as we move towards the west.As far as rainfall is concerned, most separate of Europe receive an annual rainfall of 20-60 inches, with the maximum of it happening towards the West of the mountains (around 80 inches in general). The areas receiving lighter rainfall include the Southern part of Spain, Kazakhstan and Federal part of Scandinavia.It is for a reason that Europe fetches the maximum number of touring cars in a year- its warm people and great natural beauty, coupled with aesthetic modernity. It is a well known fact that almost each and every country that comes under the European region has major tourist hubs, which attract customers from all over the world. Not only people from other continents, but people from within Europe also travel to the various tourist destinations in Europe.The tourism perseverance also plays a major role in the economic stability of the European nations, and this is the sole reason as to why the governments have sp ent a massive amount of time and money in keeping various tourist places in Europe clean and updated. The climatic conditions and the exceptionally well affiliated airline services make traveling in Europe, a piece of cake. The ancient medieval history, coupled with some great historic monuments, palaces, churches and alleys have do tourist places in Europe a hot favorite among tourists of all age groups, backgrounds and nationalities.France attracts most of the tourist influx in Europe. From the Louvre and the Eiffel tower to the Notre impede Cathedral and the Champs ET Lyse, almost every tourist spot in France, especially in Paris, has become a symbolic of the most visited places of the world. The Arc of Triumph, the Garnier Opera and the Gallo-Roman amphitheatre are some of the other places that can be termed as some of the best tourist places in Europe.Germany and Rome follow France closely when it comes to some of the most visited tourist places in Europe. Berlin, Frankfurt, Munich and Dsseldorf attract tourists from all over the world. Business travelers and educational tourists also frequent these places. The Colloseum and the Palazzo Barberini are two of the most famous tourist places in Europe, belonging to Rome.Apart from historic tourist places in Europe, great natural places are also hot favorites among tourists. Regions around the Alps, the Mediterranean Sea and the pacific top the list of such places. Be it the open landscapes of Hungary, the great mountains in Switzerland or the beautiful beaches of Spain- Europe has everything to sooth a lover of nature.Apart from some great tourist places, the people, food, culture and the festival of Europe beckon one and all to this land, offering a perfect mix of traditions and rebellion.Europe has a great vicissitude of food reflecting its linguistic-cultural mosaic. In this age of globalisation we are brought to eat food from more and more countries.

Child Independence And Thinking Skills

Child Independence And Thinking SkillsCritical independent thinking skills be very important for your children. These important skills grass enhance self-esteem and promote an ability to meet any challenging situation with ease and optimism. However, as p atomic number 18nts we good deal hinder our childrens ability to founder emancipation thinking skills by fostering or doing more than they actually need. Sometimes, we may even never realize that we are actually doing all the work for them. In life, parents just neck their children and they want to take care of their children in every possible way. However, parents may also bar that going all the way to answer their children may actually hinder their childrens ability to get under ones skin independence thinking skills.One of the primary goals of parents is to help children develop the intense desire and ability to think on their own without others help. Independent thinking is the desire or wish of a person to convince him or her that the information and detail being presented is true, worthy or reasonable.Why attitude of independence is important for your children? A child who develops independence skills volition always noteing more confident about themselves and their ability to solve intricate life problems especially when you are not there. You children get out feel on top of the humankind when they work on their own and without your help. They will also show a heightened enthusiasm to work more to achieve minor goals and objectives. Just think how your children will be excited when they set to wear their socks or zip up the jacket for the depression time without any help from you Just by doing these primary things, they feel so proud of their ability to do things on their own.Developing independence skills will provide a number of benefits to your children such asA steep rise in confidence level and self-esteemAn ability to solve problems those occur in daily lifeDeveloping compassio n and love for othersAn ability to help others when they are in problemsBetter self-image and enthusiasmWhen children feel that they support do things on their own, they will also naturally want to teach and master saucy skills or solve intricate problems. For example, a child who has repeatedly worked on buttoning her blouse and who finally does it without her parents help will naturally demand to audition wear that blouse all by herself without help from anyone. Alternatively, a boy who has repeatedly tried to tie his shoelace and who finally does it without his parents help will start difficult to slip the shoes himself.You feel normally excited and thrilled, if your children are learning all things with their own initiative. This is what most parents expect from their children too. Obviously, parents also want their children learn naked things, skills and abilities on their way to adulthood. However, these events may happen only when parents provide their children an oppor tunity to try to do things on their own. In nutshell, you may need to encourage independence in your children by watching patiently when your small children try to button their shirts on their own even if they take many a(prenominal) minutes. If you lose your patience at this critical juncture, you will probably hindering or preventing your children from learning important independence skills. If you observe that your children are failing in their act of learning new skills, you may need to encourage them to try again instead of helping your children with your own efforts.Independence skills are practical life skills. These skills can slow pay heed your children develop confidence, feel less scared or nervous and eventually face any situations that are likely to be encountered at school and general places. Regardless of what children, may demand or they feel need, parents may need to try to train them in acquiring critical independence skills and responsibilities. Mind you, it i s a lifelong commitment that might be difficult to achieve and satisfy.Not all children may succeed in learning these skills. There could be many reasons for this perceived failure. Development milestones are not the same among all children. Some of them may show keenness to learn independence thinking skills while others may take some more time to learn them. Whatever the case, parents will need to give enough opportunities for their children to learn these skills at an early age. Cleaning up rooms, tables, helping parents finish house chore and overprotectting ready for the school are some of the most important skills that your children can learn. Today, families around the world are busier than ever. Parents also feel bad about not giving enough time for their children. When parents use the available time by working with their children, they can easy teach very important lessons about independence and responsibility.Teaching Your Children Independence Skills How Parents can be Proactive in Training their childrenTying shoelaces, buttoning the shirt, cleaning the teach table, doing laundry and doing homework on own without parents help these are some of the most common yet important responsibilities for a child. These simple(a) activities may look and feel very simple to many of us. However, they can pose a big challenge for most of the children who are under the age of 10 years. To an adult, these simple jobs may look monotonous and regular. However, these perceived simple tasks may look humungous to most children. There are many skills and techniques that your children mist learn and master in the beginning they leave home for their higher studies. Acquiring independence thinking skills at an early age will help your children build confidence and self-esteem.Young children and toddlers a lot like to do very meaningful and reckonable adult-type tasks. Many times, they are too enthusiastic about doing things on their own. What they lack are the techn iques or methods to realize these tasks. To help your children succeed in learning independence skills, you may need to set up a congenial physical environment to assist them bring forth more independent. To set up an atmosphere for doing work on own, you may wish to provideEasy climb and sit chairs your children should be able to get in and out of the chair independently,Easily climbable stools near sinks and wash places so that children can easily wash their hands before and after eating,An easily reachable waste tub where children can deposit refuse and wastage after snack and dinner time,Cleaning towels and sponges that can help children clean upWhat you can do to help your children become independentProviding ample opportunities Provide plenty of opportunities for your children to learn independent thinking skills. Your children should understand that learning independence skills will help them become efficient and enabled in their classroom and out of it. As a parent, you ma y wish to cajole your children to do work on their own and without your help. When your children understand that doing small tasks with their own initiatives is good for them, they will try to work on small tasks that are simple and straightforward.Encourage independence As far as possible, give limited choices for your children. When your children have limited choices in front of them, they will try to achieve excellence in the tasks they want to perform. Ensure that you respect your childrens preferences. drill Let us say that you are giving drinking chocolate to your children. You may now give just two options for them. Ask this simple irresolution Do you need that orange cup or the blue cup? Alternatively, your children want to dress up for their piano class. You may ask your children this simple scruple The red dress is that side drawer and the grey one is in the cupboard. Pick the one that you like. Here, your children will try to assess the merit of your question and asc ertain on their answers after thinking over it for some time.Show flexibility towards your children Becoming independent takes lot of time. Respect your childs natural limitations. Never ever, pressurize your children beyond certain limits. Make sure that you integrate the training within the ambit of your work. Use the available opportunities to teach your children independence thinking skills.Involve your children in qualification plans You can ask your children to suggest you ideas to help make the learning program a success. Children can give wonderful ideas. Use their abilities to help them succeed in learning independence thinking skills.Explain what independence is You may wish to explain the benefits and advantages of get the hang independence thinking skills. Tell them how learning such skills will help in classroom and in other places.Let children try to do work on own Some children will try to do small tasks on own. For example, children love to button their shirts or t ie shoelaces. Most children fail in their first few attempts because it is natural children may not develop the necessary muscle-eye-bone coordination when they are young. Let them try to do their tasks. If they fail, you can help them but with solutions to the problems. Tell them how they can button up their shirts and demonstrate the act by standing in front of them.Be affirmative and reinforce positive assertions Always, reinforce positive reinforcement and avoid negative ones. Be positive with your children and help your children become positive as well. If they do any task with success, compliment them with your heart.There are a number of independent thinking skills that your children must learn and master to become successful in life. Here are some of themNote The most important skill that your children must learn is to realize that mastering independent thinking skills will help them achieve critical goals.1. Encourage your children to ask questions and find answers with the ir own efforts2. Make sure that the questions should always have a why and what happens if component attached to them.3. Your children should find their own solutions or answers to their problems. Buttoning a shirt is one classic example. Most children often fail in their first attempt. However, they will master the task with continuous repetitions.2. Teach your children experimentation. Your children should be able to experiment on simple challenges and tasks till they find a valid solution. cheer remember that learning independent thinking skills relates very closely with performing most common daily tasks. Children who develop critical independent thinking skills can be very successful in their life.

Applications Of Laser In Engineering English Language Essay

Applications Of optical maser In Engineering English Language EssayIntroduction opthalmic maser has umteen applications in different fields especially in engineering. It is one of the most weighty inventions in the last century. laser is utilize wide in the engineering field providing facilities while applying many engineering processes. Its applications likewise helped in the development of engineering.. Laser is an important instrument in engineering that has been intentd astray by engineers in many aspects for its wide purpose and usefulness laser is a solution looking for a fuss. This report aims to analyze the applications of laser and argue the effect of laser on the mathematical product produced by this applications. This report gives detailed discipline about different engineering applications of laser.History of LaserThe first conceit of using rays of come to help in exiting and changing the appearance of atoms discovered by Albert Einstein in 1917. He said tha t it would be possible to show an atom release bring out down or guard any unusual actions using rays by definite frequence. But he was not the one who invented laser itself he just opened the way to other scientists to extend on it. Schawlow and Townes ar the 2 persons who first applied the idea of laser but they failed in their first experiment. In 1960 they succeeded to generate the first laser channel using a type of ruby.What Does LASER means?LASER stands for Light Amplification by the Stimulated Emission of Radiation Laser is a wind that emits electromagnetic waves in the form of a special type of light. It spreads as narrow crystal clear beams that jackpot be turned into one using lenses. Laser has many uses in different fields so that people needed that effective invention.Laser simply consists of a narrow light beam that is produced by a process called Stimulation of atoms. This process is held by using an amplified light beam of proper(postnominal) frequency a nd intensity. That light beam is used to stimulate the atom. Stimulation of the atom means that we give it an extra amount of energy that makes in excited. That excitation makes the outmost most electrons move to a melloweder level. Then they need to get rid of this extra energy to be back to its original and normal state, so it emits that extra energy in the form of a light beam. That light beam is laser. Thats how laser is produced.Laser solved many problems that faced engineers before inventing it. It facilitates many processes and performances for engineers. It similarly helps them find slightly information they need. As an example before inventing laser cutting and welding operations were very difficult. It was a problem to cut a metal, as you had to heating system it up to a very postgraduate temperature then you modify its shape. Laser solved this problem and made that operation become very easy and fast. As another example before inventing laser there were no wireless connections or laser radars. Laser similarly made the communication processes very fast and widely used. It made solutions for many problems that irritated engineers and people.Laser opened many screwledge and technology ways that would be impossible without it. After inventing Laser it became impossible to imagine our life without it. It became the key of many engineering operations that it will not be carried out without laser. true statement is one of its most important advantages that remove any doubts around it.It is expected that laser will be developed more and more in the future day to provide engineers by other facilities. It lowlife also be a reason for inventing other technologies. Again, Laser can be our gate to other inventions that could make our life easier and more comfortable.Laser Beam WeldingLaser Beam Welding LBW is a contemporary welding technique used to join two-fold pieces of metal using a laser. The beam provides a concentrated heat input, allowing fo r narrow, deep welds at high rates. This process is frequently used in many applications and develops to new industries.Laser beam welding has been extensively used in the automotive, aerospace, electronic, and heavy manufacturing industries to join a variety of materials. In the automotive industry, high-power lasers be used to weld many components such as contagions, mufflers, catalytic converters, exhaust systems, and tailor-welded blanks.(Wikkipedia.com)Because of Laser welding advantages such as deep welding and reduced heat inputs. Profound Manufacturers sought to automate the welding process caused the expansion of the laser beam welding process to include computers sophisticated technology to increase the product quality and more accurate control of the welding process.From More than 20 years ago, when laser welding was in its early stages it was used primarily for droll applications where no other welding process would be suitable. Nowadays, laser welding is an imperative part of the metal toil industry.Laser beam welding has high power density (on the order of 1Megawatt/cm(MW)) resulting in small heat-affected zones and high heating and cooling ratesHow it move aroundsThe Focal point is aimed on the work piece surface that weld is needed. At the surface of the work piece, the enormous concentration of light energy transformed into thermal energy. The surface of the work piece starts melting and steps forward through it by surface conductance. For welding process, the beam energy been maintained below the vaporization temperature of the material. In Fig. 1 the laser beam is directed on the work piece. attend 11 laser beam aimed on the work pieceImage dexterity of NorteastLaser.comTo the point that the laser beam strikings the work piece, all the components that direct it be transp arent, refractive or reflective, absorbing only small amounts of energy from the ultraviolet light (www.accu split.com). When the pulse of laser energy is focused into a small spot at the surface of the work piece, the energy density becomes enormous. The light is engrossed by the work piece, causing a keyhole effect as the focused beam drills into, vaporizes and melts some of the metal (www.accuparts.com).. As described in fig. 2.Figure 12 laser beam welding processImage courtesy of NorteastLaser.comIn fig. 3 as the pulse ends, the liquefied metal around the keyhole flows back in, bent and creating a small spot weld, moving the work piece or the laser emitter a recollective the surface of the work piece creates a series or spot-weld called a seam.Figure 13 the keyhole effect by laser beamImage courtesy of NorteastLaser.comEquipmentThe two types of lasers commonly used in are solid-state lasers and gas lasers (especially one C dioxide lasers and NdYAG lasers).The first type uses one of several solid media, including synthetic ruby and chromium in aluminum oxide, neodymium in ice (Ndglass), and the most common type, crystal composed of yttrium aluminum garnet doped with neodymium (NdYAG).Gas lasers use mixtures of gases like helium, nitrogen, and carbon dioxide (CO2 laser) as a medium. (wikkipedia.com)Advantages of applying Laser WeldingOne of the major advantages that laser welding is the low amount of heat that is used during the welding process. The process repeats the laser beam to allow for the cooling of the spot weld, resulting in a very small heat affected zone, which makes the welding process use less energy, and makes laser-welding exaltation for thin sections or products that require welding near electronics faultless.In conclusion, I would say that laser beam welding process when united with robotics and computer-controlled beam movements or work piece movements make laser welding systems offer a supreme flexibility to perform a variety of operations.3D laser see3D Laser Scanning is a type of reverse engineering. Reverse engineering helps in knowing more information about any object, software, wile or a sys tem. It mainly works by analyzing any part of that object and taking it apart to know everything about it using laser. It returns that object to its origins and know how to make a copy of it without destroying the main object or modifying it. That type of engineering can be used in many fields and it can be applied on anything as it is a high quality technology. That technology depends mainly on laser and its various types. Reverse engineering analyzes objects to see to it how it works or how it has been done. It also can be used to know the dimensions of a put in or an object. It is mostly used on objects that it documentations are lost.3D Laser Scanning is used to prize the dimensions of a place or a part of a place by converting physical objects or parts into data to be read on a CAD program. That measurement is done by a coordinate standard machine that estimates accurately what are the dimensions of that part. After measuring the CAD program draws 3D ciphers of that part. That method helps in knowing the dimensions of the object accurately without errors or assumptions. The 3D images produced by that method are called virtual reality. Those accurate 3D images need a very large amount of data as it measures fine details of the object.Figure 24 3D image drawn using 3D laser scanningThe amazing thing about 3D laser scanning is that it is supposed to point a long time to measure the fine details of an object accurately then reverse it into data that can be read by CAD programs. But actually that process takes seconds. It saves a lot of time which the person can spend to draw that object or try to measure its dimensions by any traditional method. That shows how laser helped in saving untold time for engineers. Laser captures every single detail in the object in a tremendously fast and accurate way. It is impossible for human to puree that level of accuracy even if he spends hours or days trying to reach it.3D laser scanning is applied in 3D scanners, coordinate measuring machines and 3D digitizers. As we said it is the fastest and most accurate measuring method that can analyze objects to know how it works or to know its dimensions. Also it saves effort and money. This application is such an amazing application of laser in engineering fields. People call it hard work that looks like magic.Communication systemsA communication system is designed to transmit and receive information using light beams like fibers. Laser works as a light beams which has enormous potential for data transmission with very high data rates. Laser communications systems are wireless connections throughout the atmosphere.Before using laser in communication, the Greeks used fire and smoke to transmit information, by the evolution of the technology, opthalmic fibers and radio waves are used for the communication of information over distance. Nowadays, lasers are used in optic fibers communications, fibers optics is a medium for carrying information from one p lace to another in the form of light. Unlike the copper transmission lines, fiber optics is not electrical in nature. Communication systems are based on optical fiber because of its advantage over metallic transmission lines. Fiber optics is used increasingly in data and telecommunications. Optical data transmission is increasingly used in various areas, such as telephone, internet traffic, cable TV. In Japan, many internet connections are already delivered to home with optical fibers.How does laser work in communication system?Figure 35 laser communication processAdvantage of laser in communication systemLasers form some special characteristic such as good directivity, polarization, monochromatic, coherent.The approach of optical fiber communications has advantages compared with systems based on electrical cables, the most important areThe losses for light propagation in fibers are very small because there is no fraction.The capacity of fibers for data transmission is huge and its also fast in the storage of data.Compared with electrical cables, fiber optic cables are very light weight, so the cost is very low.Due to the huge transmission rate of data, the cost compared by the rate of transmission is low.In fibers optic cables, the problems that arise with electrical cables such as ground loops or electromagnetic contraceptive device are eliminated.Figure 36There are several significant advantages for communication system that operate with fiber optics than systems which use radio frequencyLaser communication provides much higher data transmission rate compared to radio frequency.Small dimension light weight of components.Lower power.Application of laser in space communicationLasers used in free space laser communication systems, its one of the most important application of laser in communication either semi-conductor laser diodes, solid state lasers and fibers amplifiers lasers.Free space optical communication is the transmission of data over long distanc e, e.g. surrounded byPlanets. populace and satellites.Spacecraft and Earth based station.Figure 37 laser communication between satellitesFigure 38There are some advantages of the use of laser in space optical communication such as high power, large rate of data transmission, small size and light weight, but one of the main disadvantage of using laser as a link in space communication is the interconnection only between points that nonplus direct line of sight. The application of laser communication is discussed for a global communication system and an inter-satellites link, because laser can be directed in fibers over very long distances with very low losses and avoid atmospheric influences.CD videodiskIntroductionLaser plays an important role in our life it has a lot of applications in a lot of fields. It is used in many fields like medical, scientific, and industrial. In this part Ill mouth about some industrial uses of the laser like CD DVD Holography.Figure 49 cdWe all kn ow the importance of CDs and DVDs in our life. We use it in saving data, music albums, and videos.CD means Compact Disk optical media that can store data, and DVD means Digital Video Disk, and its also optical media to store data but with larger storage size, and much greater capacities.Figure 410cd romSo I can say that we have two types of magnetic discs and three types of drivers for the disks we have CD and DVD, the difference between them would be in the storage size.For the drivers we have CD-ROM, CD-RW, and DVD-RW. The difference between the CD-ROM and CD-RW that the CD-RW has the ability to read and draw up data on the CD, but CD-ROM can only read from the CD. So its like read only memory DVD drive can read and write on both CD and DVD disks, and has a larger storage memory than CD, so DVDs is more useful and better than CDs.Figure 411 Reading from CDHow CD and DVD drivers work?Computer takes the data from the user through keyboard, microphone, or any input device and conve rts it to zeros and ones. The idea is to store the data from the computer to the disks write on the disk using a powerful laser beam that makes holes or bumps on the disk which represents zeros and grooves that represents ones, so we can write what we want on the disk. CD and DVD the both use the same method to record data on.Figure 412Data saved on CDTo read from disk, the drive uses beam of laser that reflects back to a sensor in the drive if it hits a groove or one, but it hits a bump or zero the beam reflects with an angel and doesnt hit the sensor through this operation the drive can read data from the disk.Differences between CDs and DVDsWe all already know that CDs have a storage size 700 Mega Byte, and DVDs have storage size start from 4 Giga Byte. Also DVDs could have multiple layers so its storage size could reach 17 Giga Byte, but CDs only have one layer. So we can say that CDs are much cheaper than DVDs, but DVDs are more useful, and have much greater storage size. So CD s are still preferred in publishing music albums, and DVDs are preferred in publishing movies.Also we can say that there is a big difference between the CD and DVD drivers. We would find that the DVD drivers use a thinner beam of laser than the laser beam of CD drive so it could make smaller grooves and bumps than CD drives, so it could write on both CDs and DVDs, but CD driver could only write on CDs and cant write or read DVDs.Figure 413 cd writing process Figure 414 Cd writing processApplications of laser in communicationsLaser radar (LADAR) or (LIDAR)Laser radar (LADAR) or (LIDAR) (Light Detection and Ranging) is similar to millimetre radar but it uses laser beams to find its target.The (LADAR) processor looks for familiar patterns in the scenes. The processor ceaselessly compares the scenes taken with the 3D files stored in the radar memory. It can scan large areas with very high precision and its ability to build a detailed depiction of the area. The (LADAR) sensor can look at the target from different angles.Laser radar seeker can detect objects features with very high definition up to 15 cm resolution from about 1000 meters. After the radar identifies the object it takes a 3D picture.Laser diodeLaser diode is a diode where the active medium is a semiconductor similar to light emitting diode this diode is used to produce n-p-n or p-n-p transistors that are used widely in electronic systems, these diodes are sometimes called injection laser diodes to distinguish between optically diodes.A laser diode is formed by doping a very thin crystal wafer on its upper surface using laser beam to produce a n type region and a p type region results in a p-n junction which is called a diodeLaser fibreA laser fibre is a glass or a plastic fibre that carries light through it.These fibres are used widely in fibre-optic communications which permits transmission over long distances and at higher bandwidth than other forms of communications. Fibres are used instead of me tal wires because signals travel across them with less loss and they are also immune to electromagnetic interference. Fibresare also used for illumination and sensors.Laser microphoneThe laser microphone is a device that uses a laser beam to detect sound vibrations in distant objects.The device takes vibrations as a pressure waves created by objects in the room (like person or an object), the laser beam is directed into the room from a window that hits the object then it returns back to the receiver that converts it to an audio signal.The minute differences in the distance travelled by the light as it reflects from the vibrating objects (are detected interferometrically is a technique used for diagnosing two or more waves by studying the pattern of interference created by their superpositions).A new type of laser microphones that uses laser and a smoke or vapour to detect the vibration waves in the air.Applications of laser in computerLaser barcode scannerThe laser beam bounces off a rotating mirror and scans the code, sending a modulated beam to a light detector and then to a computer which has the product information stored. Semiconductor lasers can also be used for this purpose, laser barcode scanners are the most common used barcode scanners, laser barcode scanner doesnt need to be in contact with the barcode to read it, it can read barcode 6-24 inches away from it.Laser printerA laser printer is a type of computer printers that rapidly produces high quality text and graphics on a plain paper.It is a computer printer that uses laser beam to produce an image an on a rotating drum before transferring it to the paper.As with digital photocopiers and multifunction printers, laser printers employ a xerographic printing process but differ from analogue photocopiers in that the image is produced by the direct scanning of laser beam across the printer photoreceptor.A laser beam projects an image of the page to be printed onto an electrically aerated rotating drum coated with selenium. Photoconductivity removes charge from area exposed to light, the drum then prints the image on a paper by direct contact and heat.Laser printers have many advantages than other printers like the speed of laser printer can vary widely, it can print 12000 pages in one hour. cobblers lastThis report has discussed the applications of laser in our daily life. We have shown the different applications of laser in communication compared with different systems that operate with electrical cables radio frequency. The application of laser in computer represented in each aspect in our daily life as laser printers, DVD and scanners. The use of laser in mechanical engineering such as welding and cutting. It is also used in measuring dimensions and analyzing object by using 3D scanning. After leaning all this application and advantages of lasers. We can not neglect the present of laser in our life. By the end of the report, the benefits of laser and its applications is clea r.

The Effectiveness of a Multicultural and Bilingual Education Essay

The Effectiveness of a Multicultural and Bilingual fosterage1 in that location is a lot of controversy concerning our public educational classs. Opinions and lifestyles differ -- often Often what is beneficial for unmatchable group of people is counterproductive for another group. Educational issues argon complex and sensitive -- therefore Therefore, we must analyze both sides of the issue before we make a decision. Two controversial issues in todays public educational program are multicultural and bilingual education. 2 Some experts believe there are many benefits we, as Americans, can experience in a multicultural education. James A Banks states An education that reflects the experiences of a nation across its racial, gender and socioeconomic boundaries-benefits all students. (96) This is from the book editor, not from Banks. Banks is a professor and director of the summation for Multicultural Education at the University of Washington in Seattle. Put this before the qu otation. He also believes that an important goal should be to educate students so they can move successfully in the workforce and in their civic communities to help the nation actualize ideals such as justice, equality and freedom (Banks 97). Studies show that student employment and test scores are increased when taught with group-oriented strategies consistent with their community cultures. Research indicates whose authority? students from diverse ethnic backgrounds do better in school when they know a better understanding of each other?s cultures (Banks 99). 3 Gena Dagel Caponi associate professor of American Studies at the University of Texas in San Antonio states Studying any one part of us does not divide us, it educates us. Occ... ...reenhaven Press Inc. 2000. 101-102. Chavez, Linda. The Dangers Of Multiculturalism. Reprinted in Williams, Mary E. ed. Are Multicultural Approaches Good For Education? opposing Viewpoints. San Diego. Greenhaven Press Inc. 2000. 106. Chave z, Linda. Bilingual Education Is A Failure. Reprinted in Williams, Mary E. ed. Are Multicultural Approaches Good For Education? Opposing Viewpoints. San Diego. Greenhaven Press Inc. 2000. 130-134. Bilingual goes before Dangers Famularo, Thomas J. Multicultural Education Is Counterproductive. Reprinted in Williams, Mary E. ed. Are Multicultural Approaches Good For Education? Opposing Viewpoints. San Diego. 2000. 103-108. Garcia, Ofelia. Bilingual Education Is Beneficial. Reprinted in Williams, Mary E. ed. Are Multicultural Approaches Good For Education? Opposing Viewpoints. San Diego. 2000. 126-129.

Platos Concept Of Justice Essay -- Philosophy Philosophical Essays

Platos Concept Of JusticeABSTRACT In his philosophy Plato gives a prominent place to the intellection of referee. Plato was highly dissatisfied with the prevailing degenerating conditions in Athens. The Athenian democracy was on the verge of ruin and was ultimately responsible for Socratess death. The amateur meddlesomeness and excessive personal identity became main targets of Platos attack. This attack came in the form of the construction of an ideal society in which justice reigned supreme, since Plato believed justice to be the remedy for curing these evils. After criticizing the schematic theories of justice presented differently by Cephalus, Polymarchus, Thrasymachus and Glaucon, Plato gives us his own theory of justice according to which, individually, justice is a human virtue that makes a person self-consistent and good socially, justice is a social consciousness that makes a society internally on-key and good. According to Plato, justice is a sort of specialization. Pl ato in his philosophy gives very primal place to the idea of justice. He used the Greek word Dikaisyne for justice which comes very near to the work morality or righteousness, it properly includes within it the whole trading of man. It also covers the whole field of the individuals conduct in so far as it affects others. Plato contended that justice is the prime(a) of soul, in virtue of which men set apart the irrational desire to taste every pleasure and to get a selfish satisfaction out of every object and accommodated themselves to the discharge of a maven function for the general benefit.Plato was highly dissatisfied with the prevailing degenerating conditions in Athens. The Athenian democracy was on the verge of ruin and was ulti... ...refore, be like that harmony of kinship where the Planets are held together in the orderly movement. Plato was convinced that a society which is so organized is fit for survival. Where man are out of their natural places, at that place th e co-ordination of parts is destroyed, the society disintegrates and dissolves. Justice, therefore, is the citizen sense of duties.Justice is, for Plato, at once a part of human virtue and the bond, which joins man together in society. It is the identical quality that makes good and social . Justice is an order and duty of the parts of the soul, it is to the soul as health is to the body. Plato says that justice is not mere strength, but it is a harmonious strength. Justice is not the right of the stronger but the effective harmony of the whole. All moral conceptions revolve about the good of the whole-individual as well as social.