Wednesday, November 27, 2019

Free Essays on Creation Vs. Evolution

Creation vs. Evolution Outline Title: Creation vs. Evolution or Scientific Creation Thesis: Creation vs. Evolution has been a hot topic with society for centuries. Just recently, in the mid-1980’s an new kid came on the block, Scientific Creation. Purpose: The following will show the main ideas of Creation, Evolution, and Scientific Creation. I will also show why I believe in Creation and what aspects of Evolution and Scientific Creation help me to confirm this belief. Creation vs. Evolution or Scientific Creation The cosmos, whether you believe in Creation, Evolution, or Scientific Creation is a very interesting subject. Creation, as documented in the Bible in Genesis 1:1 states that â€Å"In the beginning God created the heavens and the earth.† It shows that God created the universe and all living things out of love, in a particular order, and with a particular purpose. Evolution portrays the origin of life as starting out with the â€Å"big bang†. The collision of two atmospheres, both atmospheres having the ability to create life as we know it. Scientific Creation is not based on Genesis or any religious teaching. Scientific Creation is based on the scientific data, which supports Creation. According to Henry M. Morris, the difference between Scientific Creation and Biblical Creation is â€Å"the first is based solely on scientific evidence, from such sciences as genetics, geology, thermodynamics and paleontology; the second is based on Biblical teachings.† In examining the above beliefs, Creation, Evolution and Scientific Creation, I view Scientific Creation as an attempt to make a lateral connection between Evolution and Creation. The theory that all living creatures came out of the â€Å"big bang† (according to Evolution) is too far of a stretch to the imagination for me. If all animals, insects and human beings were created due this collision and through an evolutionary process, then one would think that we would all be r... Free Essays on Creation Vs. Evolution Free Essays on Creation Vs. Evolution Creation vs. Evolution Outline Title: Creation vs. Evolution or Scientific Creation Thesis: Creation vs. Evolution has been a hot topic with society for centuries. Just recently, in the mid-1980’s an new kid came on the block, Scientific Creation. Purpose: The following will show the main ideas of Creation, Evolution, and Scientific Creation. I will also show why I believe in Creation and what aspects of Evolution and Scientific Creation help me to confirm this belief. Creation vs. Evolution or Scientific Creation The cosmos, whether you believe in Creation, Evolution, or Scientific Creation is a very interesting subject. Creation, as documented in the Bible in Genesis 1:1 states that â€Å"In the beginning God created the heavens and the earth.† It shows that God created the universe and all living things out of love, in a particular order, and with a particular purpose. Evolution portrays the origin of life as starting out with the â€Å"big bang†. The collision of two atmospheres, both atmospheres having the ability to create life as we know it. Scientific Creation is not based on Genesis or any religious teaching. Scientific Creation is based on the scientific data, which supports Creation. According to Henry M. Morris, the difference between Scientific Creation and Biblical Creation is â€Å"the first is based solely on scientific evidence, from such sciences as genetics, geology, thermodynamics and paleontology; the second is based on Biblical teachings.† In examining the above beliefs, Creation, Evolution and Scientific Creation, I view Scientific Creation as an attempt to make a lateral connection between Evolution and Creation. The theory that all living creatures came out of the â€Å"big bang† (according to Evolution) is too far of a stretch to the imagination for me. If all animals, insects and human beings were created due this collision and through an evolutionary process, then one would think that we would all be r...

Saturday, November 23, 2019

Problem Solving Skills

Problem Solving Skills The term problem solving skills refers to a number of academic and real life situations that require the ability to dissect problems and effectively resolve them. Problem solving  is considered to be the process of finding solutions to difficult issues.  The term problem solving skills refers not only to one’s ability to solve math problems but also to a number of academic and real life situations that require the ability to dissect problems and effectively resolve them. Problem solving skills are also of extreme importance in the academic setting because they are an inalienable part of one’s studies, effective work and life. Your teachers, tutors, professors, instructors will often give you problem-solving assignments as means of building up your life and academic competencies. Globally speaking, your entire education is built on problem solving, and here is why: when you are given a problem that ranges 1 out 3 on the complexity scale, you might not be able to deal with it at first. PROBLEM SOLVING STRATEGIES However, with a little bit of help and knowledge, you are able to break it up into a set of smaller problems and solve them one by one.  Eventually, you will be able to solve problems level 1 easily. Once you have reached this level, you will be ready to move on to Level 2 and the cycle will repeat. Education works exactly the same way: once you complete one problem-solving assignment, your skills grow and you are ready to move onto a more difficult one.  The higher you are in this hierarchy, the better your problem-solving skills are and the more complex problems you can resolve. Types of Problem Solving Skills As a matter of fact, solving different types of problems requires a considerable number of skills, but they all may be divided into two main types: analytical and creative. Let us find out the role of these two skill groups. Analytical skills, which are also collectively called ‘logical thinking’, is a kind of thinking responsible for selecting the best solution out of all possible solutions. Analytical thinking involves the following skills: ordering, comparing, contrasting, evaluating and selecting. Creative skills or creative thinking can be characterized as a thinking process, which creates a solution that is both new and valuable. The search for such solution is based on imagination, intelligence and cognition. Creative thinking helps to see beyond the obvious and plays an important role in solving the problem.  Creative thinking helps to see beyond the obvious and plays an important role in problem solving. Very often ideas obtained in the process of creative thinking seem illogical at first. However, subsequent ideas may alter and modify the initial ‘illogical’ solution to the extent where it seems perfectly suitable. Such skills include some basic elements such as fluency ­, flexibility,  and originality as well as  ­producing uncommon ideas. Problem Solving Pattern Effective problem solving usually involves a number of specific steps. Depending on the situation and the type of problem, you will use one or the other problem-solving pattern. Nevertheless, we would like to offer a list of specific problem-solving steps. Problem identification Ability to identify a problem means that a person can adequately detect and recognize the problem, identify its source and nature. It may sound obvious, but this step requires more thought and analysis than it may seem at first. Problem structure This skill requires the ability to observe, carefully inspect and develop a clear picture of the problem. When working on a problem, you need to find as much information about the problem as possible; as a result, you will build a more comprehensive picture of goals and barriers. This may not be needed for simple problems but is necessary for complicated ones. Identifying possible solutions When trying to solve a problem you will need to identify all possible solutions and select the most viable of them. It works like brainstorming, where you name and write down whatever solution comes into your mind. The only difference is that your solutions are limited to whatever ideas come to your head, and that narrows down your choices. Nevertheless, you are still getting a list of viable solutions and are able to select the ones that you think are most effective. Decision-making skills Once you have generated all solutions it is essential that you select the best one. This is perhaps the most complex part of the problem-solving process. Some solutions may not be possible due to circumstance like time constraints, budget, complexity etc. Evaluate all pros and cons and make a decision – which course of action do you want to take? Implementation This step involves accepting and carrying out the chosen course of action. Implementation implies that you need to act based on the chosen solution. Implementation stage may bring some unexpected surprises; in most cases, they are a result of inadequate analysis of the problem. Feedback The last step of effective problem solving is reviewing outcomes of problem solving. This step means that you need to make sure your decision was successful and effective. This can be achieved by monitoring and gaining feedback from people affected by the changes that occurred. THE ART OF EFFECTIVE PROBLEM SOLVING In order to effectively solve problems, you need to be attentive, well-organized, flexible and motivated to find the solution. This level of problem-solving skills will require you to build up considerable experience in problem solving. Once you have dealt with a number of complex issues and have attained certain expertise in it, you will start solving most problems subconsciously and automatically. While you are still on this way, is happy to help you work through your problem-solving assignments. We are ready to help you with all kinds of problem-solving activities, ranging from math problems to problems of logical nature, law and even more. Feel free to place your order today and we will gladly help you to work through your assignment. is the service you can trust!

Thursday, November 21, 2019

Planet Earth Essay Example | Topics and Well Written Essays - 500 words

Planet Earth - Essay Example This process is called migration and this cycle can be amazing. The largest land migration of any animal happens in the spring in Northern Canada when three million caribou march across the tundra. The spring is also marked by melting sea ice that broadens the deciduous forest and fattens the many water ways that thread their way across the land. The movement of water during the year is another significant cycle taking place daily on our planet. All life is dependant on water and many species spend a most of their time searching for and following water, like elephants and buffalo. The distribution of water also shapes our landscape; where water is prevalent the land is lush and green and where it is sparse the land is dry and barely inhabited. When this is the case we have desert and, sadly, the amount of land that is covered with desert is growing yearly. The desert experiences a lack of rain and rain is the source of all fresh water, which is essential to the survival of all species, plant and animal. The rain fattens our rivers and streams as the melting of the polar ice does.

Wednesday, November 20, 2019

Paper tigers Essay Example | Topics and Well Written Essays - 750 words

Paper tigers - Essay Example In the article, Yang points out that most Asian Americans are seen as obedient, non-questioning individuals. In fact, he terms them as â€Å"conformist quasi-robots who simply do not matter† (Yang, 2011). This explains why they are really given management positions in most companies in America. The author gives the example of James Hong, who says that he was not considered to be good enough to hold management positions. Stereotypes have denied most Asian American the chance to serve in top levels of organizations but instead given jobs on lower ranks. The predicament faced by Asian Americans as described in this article can extent to other groups affected by various forms of stereotypes. In the end, the perceptions held by others about a given group greatly influence how the affected people are treated in the society. Secondly, it is clear that stereotypes make individuals have negative perceptions about themselves and their culture, and relegate themselves to lower classes. Through this perception, these people are left to occupy the lowest ranks in the society, making themselves appear inferior. For example, in this article, Yang gives the example of Tim Wu who grew up in Canada, and witnessed how whites and Asians perceive each other. According to Wu, there was the assumption that Asians were talented at bitter labor. In other words, Asians were seen to be good at the most brutal part and therefore most suited for it. The whites, on the other hand, portrayed themselves to be above all that. In the end, as Wu notes, the Asians moved towards these kinds of low class jobs because they believe they are best suited for them. This illustrates how stereotypes make people to lower themselves and have negative perceptions about themselves. They tend to put themselves in the lowest classes because that is what the rest of the society believes they

Sunday, November 17, 2019

Steroids in the World of Sports Essay Example for Free

Steroids in the World of Sports Essay During the 1930s, scientists discovered that anabolic steroids could help the growth of muscle in laboratory animals, which led to abuse of these drugs by bodybuilders and weightlifters and then by athletes in other sports. Ever since the beginning of sports there has been different techniques used in order to gain an edge over opponents. The question that has been most frequently asked is, which of these techniques is considered cheating, and which ones are fair game. The use of steroids is now the most well known form of cheating in recent sports history, and has drove many sports commissioners into a full investigation, that has lead to unique unprecedented punishments. Professional stars must realize that they are huge role models in today’s society, and are influencing young athletes all over the world. Any player in today’s society knows that there is a major punishment for using any kind of performance enhancing drugs. Not only do they get suspended immediately but if and when they return are often booed by fans, and are basically embarrassed in front of the entire league. Since steroids has been such a major subject of late, and such closely watched, I think anyone who tries is just asking for trouble. If an athlete in one of the major sports is caught using performance enhancing drugs there is immediate media frenzy. Many people believe that if your caught using performance enhancing drugs, any accomplishments you made during your career should be erased. You then might ask yourself, what would drive an athlete to risk their playing career by using steroids? Steroids are manufactured to enhance testosterone and are usually taken to build muscle, boost performance, and improve appearance. Often older players use steroids when they are injured because they do not recover as fast as they usually would when they were younger. In sports, size is extremely important, and that extra thirty or forty poun ds will have a major factor in how an athlete will play. One of the biggest problems with performance enhancing drugs is that scientist keep coming up with new drugs that the public doesn’t know about. All of the major sports now drug test their athletes, but since these newly developed drugs aren’t well known there is no way they can regulate the test. We have seen baseball players like Mark McGwire and Jose Conseco admit to the use of a drug called Andro. Andro is now one of the performance enhancing drugs being tested by the league. During the time that Mark McGuire and Jose Conseco were playing not to many people knew about the drug, and was considered to be legal. As the major sports try to put an end to this steroid era, we see some of the biggest stars being linked to steroid use. It is very easy to link this to the amount of teenagers in high school and college that are now using performance enhancing drugs. Over the past decade the percentage of young adults that have admitted to using steroid has almost tripled. Since most of the players being caught are major stars, it is easy for young adults to think all they need to do is take steroids and they’ll have that extra edge. The sport that has been affected most by this steroid era has been Major League Baseball. Ninety-five percent of the people who vote on the Baseball Hall of Fame agree that if a player has been associated with the use of steroids, they would never vote that athlete into the Hall of Fame. This is a very important subject because there have recently been a number of baseball players that would be a lock for the Hall of Fame if they were not linked to steroid use. It is very hard to determine the penalty for these players because nothing like this has ever happened before. Some fans believe that the use of steroids have very little effect in certain sports, and do not understand the big deal. Some have actually suggested making steroids legal, and the athletes can take them at there own risk. Although I think this idea is fascinating, I do not believe I could ever happen. The pressure for players to use steroids would be almost impossible to resist, and would lead to everyone to take them. The style of play in most sports would change from skill and technique to power and strength, which would take away from the beauty of the game. The most important reason they could never legalize steroids in sports is because of the health reasons involved with taking steroids. Steroid use is one of the most controversial subjects in today’s society because of many different reasons. There are so many supplements that are considered to be legal, but there is just as many that are considered to be illegal. Athletes must ask themselves if it is worth it to risk their careers on trying to just get an edge. The problem with this is that most people do not think of the consequences until after they get caught. The most important thing most major league players don’t think about when they use steroids is how it affects young athletes in today’s society.

Friday, November 15, 2019

The Fire That Burns Within :: Personal Narrative, Autobiographical Essay

The Fire That Burns Within "...we but level that lift to pass and continue beyond." Walt Whitman, "Now I Will You to Be a Bold Swimmer," Song of Myself. I never really thought about how one's childhood continues to shape one's future. When I was young it never crossed my mind to say, "I wanna be a medical doctor of endocrinology when I grow up" or "I wanna be a biomedical researcher at A&M University." It was, of course, always "I wanna be a fireman" or "I'm gonna be an astronaut." Somewhere along the line I became interested in science, and now I want to become a doctor. From looking back on my past all I can figure out is that my interest in science grew the more I learned. I see it as this burning fire that started out as a spark when I went to my first science fair in second grade and saw all those experiments written out and displayed on tri-folded poster board cut-outs. Now I try to feed that flaming fire of curiosity by learning as much as possible about everything, yet I also need to stay focused and concentrate on this future in medicine. In short, I need to become an ideal student. In my opinion, the ideal student is one who always asks questions, consistently yearning to know what is unknown to him or her. The ideal student is smart and always wondering and thinking about something. This ideal student doesn't necessarily need to be totally organized, yet that student shouldn't be sloppy either. For instance, I can be really smart, always ask questions, always be thinking, but I could be so disorganized I couldn't even find my homework. An ideal student is a curious student, constantly pondering and frequently trying to communicate these thoughts to others. "A scholar is driven by a force as strong as his curiosity, that compels him to tell the world the things he has learned," says Edmund S. Morgan, of Yale University, in his paper "What Faculty Expect of Students." I do not think I am Morgan's ideal student. I only meet a few of the requirements. I do, however, think quite a bit.

Tuesday, November 12, 2019

Car Bumper Design – materials and specifications

Bumpers are safety features fixed to the front and back of vehicles. They are design to take a certain amount of impact from a collision by acting as dampers. To improve efficiency and performance modern bumpers are design to be aerodynamic and cheap. By developing wind channels in the bumper air can be used to provide more grip and stability for a safer drive. Modern bumpers are also design to be interchangeable after impacts for low cost repair. Car manufactures tend to design their bumpers from thermoplastics as it is cheaply made and adsorbs impacts more effectively. To design an efficient bumper all possible environmental and unforeseen circumstances most be taken into account. Material specification Since metal components were more used in the design of larger vehicles a polymer based material was selected. This allowed for cheaper and easier manufacture components. To select the appropriate polymer for the bumper the fallowing applications had to be look at to obtain an overall purpose of the bumper. * Vehicle car crash Frontal-impact tests To protect pedestrians from low speed frontal-impacts standard test are performed on the front of cars. Bumpers are subject to impacting a dummy at knee height. If there isn't enough impact absorption in the bumper resulting in a broken leg test failure will occur. To combat this application material's with high absorption and tensile strength is look at first. [1] * Environmental factor Environmental factor involves a range of different topics for this project the main ones will be focus on o Recycling or disposal of the material safely and cheaply. A polymer that is commonly recyclable with low disposal costs. o Protection of the material for weather conditions. Nearly all plastic experience UV degrading from the sun or micro fractures occurring from frost over time. Finding the highest resilient polymer and adding additives should solve this problem for a suitable polymer. * Manufacturing Process During the manufacturing process the polymer will have to undergo heat treatment, compression and shearing processes. Preferably a polymer with a high melt flow index and a low melting temperature. This would allow for cheaper heating cost and quicker cycle times. Mechanical Properties To obtain the required specification of the polymer required the fallowing standard tests are performed. Property ASTM * Melt flow index D1238 * Tensile strength D638 * Tensile modulus D638 * Flexural strength D790 * Flexural Modulus D790 * Notched Izod impact test D256 Material Selection After researching different polymers and comparing mechanical properties it was found that Polypropylene polymer was mainly used in manufacturing of bumpers. PP (Polypropylene) Polypropylene is highly common material in manufacturing from furniture to carpets. The reason for its popularity is its low cost, making it suitable for the production of bumpers. Manufacturing methods: PP is suitable for extrusion, injection moulding and vacuum forming. It has a high melt flow index which allows for quicker flow through the mould. This optimises time between granulated polymer entering and leaving as a component. Its low melting point allows for cheaper heating costs. Mechanical properties: The mechanical properties for PP show high impact resistance even in low temperatures. The material is stiff, and the properties are kept over a wide temperature range. These properties allow for the polymer to experience enough flexibility to absorb small impacts while returning to its original shape. Average Melt flow index 26.8 g/10min Tensile strength 33.0 MPa Flexural strength 49.0 MPa Notched Izod impact test 2.00 kJ/mà ¯Ã‚ ¿Ã‚ ½ Melting point 159 à ¯Ã‚ ¿Ã‚ ½C Table 1 Environmental factor PP experience small amount of UV degradation but this is relatively small compared to other polymer to solve this additives are added. Though this adds further costs the benefits of the other properties compensates for loses. [3] PP is considered a type 5 plastic for recycling. It is commonly recycled fulfilling the environmental factor. Disadvantages When coating and painting the finished component it is found that polypropylene is hard to work with. Colours and dies have to be added at the right time and temperature for quality assured product. Alternative ABS (Acrylonitrile butadiene styrene) exhibits a lot of PP properties. But due to high UV degradation additives are added increasing costs. Process selection Manufacturing of polymer components involve a verity of different ways. Through research injection-compression moulding was the most commonly used form of manufacturing a bumper. Injection-compression moulding Fig [1] 1. Support wall for injection and apposing compression clamp of mould 2. Mould with coolant attached 3. Main clamping forcing that applies pressure on the mould to counter react the force of injection 4. Second clamping forcing applied after injection mould process is complete. This further compresses the polymer in the mould. Due to a larger surface area more pressure is exerted completely filling the mould. 5. Secondary hydraulic ram 6. Locking levers 7. Tie Bar for supporting movement of clamp 8. Lock of point 9. Primary Hydraulic ram 10. Back support wall Injection Moulding Injection moulding involves the feeding in of granulated ABS into the feed hopper. As it is funnelled down the polymer enters the cork screw were it is slowly force up the shaft. During this process the polymer is slowly heat by the heaters surrounding the shaft. At the end the polymer is heated enough to melting temperature allowing for flow to occur. By the cork screw constantly compressing the polymer all air bubbles are force out resulting in a uniform flow of polymer been extruded through the sprue into mould. Compression moulding On entering the mould the polymer is forced to spread out to fill the mould. In conventional injection moulding the polymer would only fill about 96% of the mould. By having a partial opened mould the existing polymer in the mould can then be compress completely filling the mould. [2] By combing these two process techniques compression-injection moulding is performed. Properties Moulding machines with clamping range from 8000KN to 13000KN and a shot capacity up to 4000g m/s. Suppliers Engel, Demag, Klockner, Windsor http://www.sumitomo-shi-demag.eu/products/ Alternative Thermoforming forming of the product by place a heated blank sheet of the polymer over the mould and through suction creating the component Bumper drawings The fallowing drawings show the basic model of the part been produced. The overall thickness of the bumper throughout was taken as 10mm. The part had to be design to suit the mould so the polymer could flow easy. This involved keeping a constant flow of lines so no corners would be create and fairly uniform surface Fig. 1 Auxiliary view of bumper Fig. 2 Bumper Mould design Designing and constructing the mould requires highly precise work in both physical and theatrical ends of the process. To break even on cost a mould has to withstand a prolong cycle time. To achieve this length of time attention product quality most be reliable. Fig. 3 Mould and bumper Creating the mould involve the fallowing design parameters * Shape of bumper and tolerances * Mould had to be design for injection process * Direct gate hot runner injection system for funnelling the melted polymer from the injection system to the mould. By insulating the mould from the runner the temperature of the sprue can be maintained allowing the same left over material to be injected into the next product. * A draft angle throughout the mould and the sprue to allow for easy release. 1à ¯Ã‚ ¿Ã‚ ½ per side of the sprue * Cooling system to allow for uniform temperature during cooling * It was desire not to have sharp corners in the mould as it reduces the bumper strength while creating mould flow problems * Type of tool steel * Surface finish Mould drawings To gain a full understanding of the environment in the mould finite element modelling would have to be applied. This would give a computer aided design of the melt flow analysis throughout the mould, expected expansion and compression forces exerted during the process and cycle time prediction Fig. 4 Top of mould designed so internal dimensions of the bumper was taken Fig. 5 Bottom of mould designed so external dimensions of the bumper was taken Fig. 6 Assembly of mould Bumper Mould specification Steel Type Steel H13 was selected as it has long cycle life and shows great resistance to constant temperatures, wear, cracking and thermal shock. All these properties are associated with the manufacturing process. [5] Injection system Direct gate system. Reduces risk of blockage and allows for easy maintenance. Ejection System Robotic machine to extract the bumper from the mould with the use of suction pads. This allow for constant machine operation. Surface Finishing High gloss finish to ensure a polished surface on bumper and reduction of the bumper sticking in the mould. Mould Cycle Time: It is estimate from the polypropylene entering the mould, till extraction a time cycle of 45s exists. Cycle life If run at constant rate it is estimate that a cycle life time for the mould of a 100,000 components produced exists. Treatment Coolant channels create to maintain steady temperature. Mould coated with oil to prevent rust. Assumptions It was assumed that due to high compress and prolonged cycle times the mould would have to be highly strong and rigid. This involved making a highly thick walled and solid mould. On cooling of the polymer it was assumed that a shrinkage allowance of 0.5mm would have to be taken into account in the design of the mould. Manufacturing set-up Before production begins a manufacturing process is set. This takes into account standard working procedures and outside factors. This creates a more safe and quality assured environment. Procure material Granulated PP is source from a reliant and efficient supplier Treatment Polypropylene is dehumidified. Excess water is extracted before production occurs. This involves a pre-heating process. Feeding Granulated Polypropylene is brought to feed hopper where it is either manual feed in or through a conveyer belt machine system. Mould Top and bottom of the mould are load onto the clamps were their securely fixed. This involves crane operation and coordinated procedure as the moulds are highly heavy and can't afford to get damaged. Appropriate tonnage is applied compressing the mould. Clean Earlier material is purge out from the machine. Final check of machine operation is covered Production Polypropylene is slowly released into the cork screw and gradually begins to fill and compress. Fine tuning is performed on injection speeds, heaters, coolant temperatures, etc.. Tuning is performed till maximum efficiency is maintained. After the bumper is complete the mould is opened and the bumper is removed. Customer Bumper is deflash of excess polypropylene where injection occurs. This is either done robotically or by human intervention. The bumper is then sent off for packaging and storage where it will then go out to the customer. Factory layout Fig. 7 Factory layout from a plan view Material usage per annum It was assumed a cycle time of 45s between polymer entering and leaving mould. By taking into account other assumptions an overall estimate of components per year was found. Assumptions * Average time of 12 work hours per day * Maintenance of machinery, loading of material, organising and other factors estimate of 1 component every minute. (Estimate of 720 a day) * Average of 200000 bumpers per year. (Estimate 260 work days) * Mass of bumper 15kg Material usage per annum 3000 (metric) tons