Explain why some creationists do not believe in the big bang theory Essay Example for Free

Explain why some creationists do not believe in the big bang theory Essay Creationism is commonly recognised as a religion that does not regard the big bang theory or evolution to be true. Creationists are a group of, often evangelical Christians, who have a literal belief in the creation stories of the bible; it teaches that everything in the universes ultimate cause is God. Although it is important to note that there is not just one type of creationist and not just one single belief that is creationism. There are many varieties including progressive creationists, who make a link with bible accounts and the big bang theory, and day age creationists who believe in the Genesis account of creation however state that each of the 6 days of creation in the bible was actually a period of millions of years. Although progressive creationists make a link between the big band and god, most creationists would reject this view. Dr Russel Humphreys, a young earth creationist, believes â€Å"the order is all wrong as well as the timescales.† When it comes to matching bible creation accounts with the big bang. For example, Genesis chapter 1 states that the universe starts with darkness however the big bang theory explains the universe starts with light. Creationists also find a problem with the big bang theory because it states that the whole universe began with a singularity, and creationists claim that scientists can’t determine where this came from, therefore proving a major flaw in the theory. Another growing belief of creationists is that the universe is only between 6000-10000 years old, and was created by God. On the ground of this belief the big bang theory is not a logical possibility. This particular theory was devised by Philip Gosse and is known as the Omplalos argument. Gosse used the Julian calendar to work backwards, and this lead him to conclude that the universe began on October 23rf 4004BC, and was created by God in 6 days. He stated that although there is evidence such as fossils to suggest that the world is older, these and other things were just made by God, and the universe was created with an apparent history that isn’t actually true. Consequently any discoveries that scientists make that go beyo nd the date of 4004BC are wrong and can’t be used as evidence for the creation of the universe. Aside from theories that provide a new explanation of how the universe began, some creationists simply believe that the big bang theory cannot be correct as it goes against their views of a benevolent, omnipotent God. They believe that the big bang theory does not reflect a God that is powerful enough to create the universe itself because  the scientific view does not accept a view that God could have created the Big Bang. It’s also argued that the big bang could not have created such a perfect world and the universes design must be down to an intelligent designer that is God. Dr Robert Matthews, a researcher at the institute for creation research, says â€Å"why for instance is our universe and its laws just right for the existence of life? Some argue that it’s because it was specially made for us by a benevolent creator.† This belief is one that belong to the denomination of creationism called Neo-creationism. The majority of creationists do not believe in the big bang theory, as the Holy Scriptures are believed to be the word of God, and are interpreted literally. The fact that creationists interpret the creation stories literally means that the book of Genesis provides the only explanation of the creation of the universe that could be true. As a result of this belief, creationists attempt to prove this b focusing research into finding scientific proof for the stories of Genesis, such as finding evidence for Noah’s flood.

Tybalts Character in Shakespeares Romeo and Juliet :: Shakespeare, Romeo and Juliet

Although admirable qualities add to one's life, they can often lead to their death. One such example of this occurs in William Shakespeare's Romeo and Juliet where we are introduced to Tybalt, a fiery and prideful young relative of the Capulet family. In the play, In the play, Tybalt plays a prominent role in both the thematic scheme and in the ultimate outcome. Tybalt is the instigator of a chain of reactions which change the course of this tragedy, sending it into a headlong collision with fate. Tybalt?s uncontrollable vengeance, skill as a fighter and sense of Capulet pride are admirable in their own ways, but lead Tybalt to his eventual death at the hands of Romeo. Tybalt seems to be recognized even by his own family as a hothead. Up until his death in Act III, he is constantly quarreling and never hesitates to draw a weapon in the face of a foe. Are anger management classes a spoof? If there were not a real problem with anger, they would not exist. Let us just say that Tybalt never was able to complete his anger management classes, because it is evident he has trouble controlling his anger. Tybalt is first introduced at the Capulet party that Romeo has decided to attend without an invitation. When Tybalt first spots Romeo at his family's party, he immediately races to Lord Capulet, who tries to calm Tybalt. Tybalt turns and addresses Lord Capulet: ?But this intrusion shall, now seeming sweet, convert to bitter gall.?(I, V, 92-93) Through this Tybalt cools down for the time being, but he certainly demands revenge again from Romeo. Tybalt's characterization in the play occurs by a direct means and it remains static throughout the duration of the play. His rude, hateful, and bitter character is made clear by his eloquent words and actions. I feel that some of the characters best development occurs when he isn?t even involved in the scene. In Act II, Scene IV, Mercutio and Benvolio develop characteristics of his fighting methods and skill as well as his French styled mannerisms in a mocking way. The method of this development could also have occurred because of the audience that Shakespeare was attempting to entertain, an anti-French group. Thus Tybalt would be both a hated villain in a fictitious play, but also a hero in some people?s eyes. In the end, although Tybalt is proud and fiery, I do sympathize with him.

Balloon Angioplasty Essay

Introduction: Angioplasty is a technique that broadens a narrow or congested blood vessel using a inflatable catheter. It is used to treat atherosclerosis (blood vessel impediments), and regularly made by an interventional cardiologist, a medical doctor with distinctive training in the handling of the heart, using invasive catheter-based measures. Angioplasty is frequently achieved as a minimally-invasive technique, where a stent is implanted into the blood vessel to preserve it open. A conceivable substitute to heart surgery, it has dependably been shown to diminution indications due to coronary artery disease and decrease cardiac ischemia. Procedure: 1. An introducer pointer is entrenched into the femoral artery in the leg. 2. A sheath introducer is placed in the opening to preserve the artery uncluttered and controller hemorrhage. 3. A controller drain is then strapped through the sheath introducer. Colorants can be inoculated through the guide catheter into the coronary artery to pinpoint and study the polluted artery using x-ray. 4. After reviewing the x-ray image, the cardiologist chooses the type of balloon catheter and plastic coronary guide wire that will be used. 5. The elastic coronary guide rope with radiopaque plastic tip is then introduced into the supervisory catheter and into the coronary artery. 6. Watching through x-ray imaging display, the cardiologist directors the flexible coronary guide wire through the coronary artery to the site of the obstruction. 7. When the stretchy guide wire reaches the obstruction, it is then strapped across the obstacle. 8. A hollow-tipped balloon catheter is then interleaved, using t he plastic guide wire as a conduit to the site of the impasse. At this point, the balloon is still collapsed. 9. After the balloon catheter spreads and is strapped inside the obstruction, the balloon is then exaggerated. Inflating the balloon increases the area about it and bandages the plaque accumulation (blockage). The exaggerated balloon also enlarges the artery wall. 10. A stent (wire mesh tube) occasionally is surrounded to keep the artery wall prolonged. The stent originally is implanted along with the balloon catheter, increases when the balloon is magnified, and left behind in the lengthened position as the balloon catheter is detached. For certain  people, heart disease cure can be accomplished without operation. Angioplasty is a non-surgical technique that can be used to open congested heart arteries. Stent appointment is another option that can be done throughout angioplasty. 11. The technique is achieved in the cardiac catheterization workroom by a dedicated cardiologist and a squad of cardiovascular nurses and specialists. Cardiac catheterization is achieved as part of angioplasty. Next, a sheath is implanted into an artery — regularly in your groin, but occasionally in the arm. A long, thin, hollow tube, called a catheter, is accepted through the cover and directed up the blood vessel to the arteries nearby the heart. A minor quantity of difference material is injected through the catheter and is cracked with an X-ray as it changes through the heart’s hollows, valves, and chief containers. From the cardinal movies of the difference material, the clinicians can tell whether the coronary veins are narrowing and whether the heart valves are active properly. There are abundant sorts of interventional procedures as below: Balloon angioplasty: During this process, a specially intended catheter with a small balloon tip is directed to the point of contraction in the artery. Stent:   A stent is a tiny metal mesh tube that acts as a scaffold to deliver support privileged your coronary artery. A balloon catheter, positioned over a guide wire, is used to supplement the stent into the lessened coronary artery. Once in dwelling, the balloon tip is exaggerated and the stent enlarges to the size of the artery and grips it open. The balloon is then collapsed and detached while the stent stays in dwelling enduringly. Over a several-week dated, your artery heals around the stent. Stents are usually placed during interventional events such as angioplasty to help retain the coronary artery exposed. Some stents comprise medication and are intended to decrease the risk of obstruction (restenosis). Atherectomy: The catheter used in this technique has a hollow chamber on the tip with an open space on one adjacent and a balloon on the other. When the catheter is introduced into the pointed artery, the balloon is exaggerated, assertive the window in contradiction of the fatty material. An edge within the cylinder alternates and shears off any fat that projected into the window.  The shavings are caught in a hollow within the catheter and detached. This procedure is recurrent as wanted to permit for better blood flow. Cutting Balloon: The cutting inflatable catheter has a singular balloon tip with small blades. When the inflatable is inflated, the razorblades are triggered. The small edges score the panel, and then the balloon wrappings the fatty material into the artery wall. Mechanics of Balloon Fabrication Angioplasty balloons, such as those described above, are fabricated by first designing a tube that is extruded in certain dimensions. This tube is then crystallized so that only a small length is left amorphous, and then the tube is free-blown into a balloon in a machine designed for that purpose. Lastly, the balloon is heat-set. All of these processes are carefully controlled in order to achieve a balloon that meets the necessary standards.

Research Paper on Global Positioning System

Research Paper on Global Positioning System Abstract Irrespective of time, location, and whether, Global Position System provides unparalleled range of services to commercial military and consumer applications. Majority of these services enables airborne, land, and sea users to know their exact velocity, location, and time whenever and wherever on Earth. The development and capabilities of the GPS technology have rendered obsolete and impractical, other traditional positioning and well-known navigation systems and technologies such as magnetic compasses, radio-based devices, and chronometers among others. Global Positioning System consists of 24 satellites, 21 of which are active while three (3) are spares and are located at an altitude of 10600 miles above the surface of the earth (El-Rabbany, 2002). GPS receivers on the ground is fitted with computers that are capable of triangulating its own sense after obtaining bearings from the other three (4) of the four (4) GPS satellites located in the same horizon. GPS segments are categorize d into three distinct segments that include space segment, control segment, and user segment. Global Positioning systems perform an array of functions on land, in air, or at sea. There are specific features that make GPS systems be attractive. These includes the ability to provide high positioning accuracies, the capability to determine accurate time and velocity accuracies, readily available signals in any part of the world, the free services at no charge, and all all-weather service delivery system (Andrews, Weill, and Grewal, 2007). Despite the above advantages, a number of challenges that still impede the transmission of signals still exist within the limits of GPS technologies. Majority of these challenges includes errors such as inaccuracies associated with the reported location of satellites (orbital errors), receiver clock errors, signal multipath, and number of visible satellites, which can affect position reading or impede signal reception. Global Positioning System Irrespective of time, location, and whether, Global Position System provides unparalleled range of services to commercial military and consumer applications. Majority of these services enables airborne, land, and sea users to know their exact velocity, location, and time whenever and wherever on Earth. The development and capabilities of the GPS technology have rendered obsolete and impractical, other traditional positioning and well-known navigation systems and technologies such as magnetic compasses, radio-based devices, and chronometers among others. Twenty-four (24) GPS satellites are strategically located 10, 600 miles from Earth and they are in circular orbits with each other (El-Rabbany, 2002). The orbital period is 12 hours, and satellites are distributed in six orbital planes with equally spaced angles. Out of the 24 GPS satellites, twenty-one (21) are active while three (3) are spaces. The GPS satellites are spaced in such a manner that four (4) GPS satellites will always b e beyond the horizon. In terms of structure and composition, each GPS satellite is equipped with an atomic clock, a computer, and a radio. Each radio understands its own clock and orbit thereby enabling it to broadcast continuously any changes in time and position. For instance, any minor corrections are made on each day after each GPS satellite verifies its own sense of position and time with other stations located on the ground. GPS receivers on the ground are fitted with computers that are capable of triangulating its own sense after obtaining bearings from the other three (4) of the four (4) GPS satellites located in the same horizon (El-Rabbany, 2002). The display screen on GPS receivers shows a map whereby the position of the object can be drawn from the map. Identification of geographic positions and altitude becomes possible if signals from the fourth satellite are receivable. Interestingly, the receivers are capable of calculating direction and speed during movements, and this capability enables navigators to estimate the arrival times to specified locations. Readings in most receivers are obtained in the form of geographic positions, that is, latitude and longitude. Finally, advanced and specialized GPS receivers can be programmed to store vital data that are usable in map making and as well important for Geographic Information Systems. Project Objectives This report limits itself to the discussion of the Global Positioning Systems, their structure, operations, and usefulness in different sectors and applications across the globe. This report aims to fulfill the following objectives: Explain what is meant by Global Position Systems and other GPS terminologies and as well shed some light on its history Discuss the structure and operations of GPS system Explain the different structures of GPS segments Outline the primary functions of GPS systems and technologies Examine the accuracy of GPS information and if possible, identify sources of errors that can affect the accuracy of GPS information Identify the primary users of GPS applications and other necessary conditions that should be fulfilled when purchasing GPS systems Identify other competitor versions of GPS systems Global Positioning Systems and their History Global Positioning Systems (GPS) refers to satellite-based radio-positioning systems and time-transfer systems that provide three-dimensional course, position, and time information to suitably equipped users. The radios sends, receives, and provides time and location information at any time, place, and weather provided the GPS radios are not obstructed from the four other orbital satellites. Other valuable information displayed by GPS technologies includes velocity and altitude. The U.S. Department of Defense designs, finances, and operates GPS systems while the USA owns the GPS technology. Other than the unparalleled advantages offered to the military, GPS systems have proven to be of fundamental benefits to the civilian community whereby GPS applications are used in rapidly expanding sets of applications. The Global Positioning System consists of 24 satellites that are in circular orbits around the Earth with the orbital period of approximately 12 hours (Kaplan, 1996). The satellit es are distributed across six orbital planes that are equally spaced in angles. Each Global Positioning Satellite is built with an atomic clock, a computer, and a radio The history of GPS systems can be traced to 1973 when the United States Department of Defense began to develop a 24-hour, all-weather global positioning system to provide support for the positioning requirements of US armed forces. The GPS was formerly referred to as the NAVSTAR (Navigation Satellite Timing and Ranging). Ideally, the GPS system was designed as a form of replacement to already large navigational system that was already in use, and as well, the need to obtain reliability and survivability for navigation systems in handling a wide variety of dynamics (Kaplan, 1996; Parkinson, and Spilker 1996). Other motives that initiated the development of GPS Technology included the need for a system to service unlimited users, and a system that does not require the transmission of signals from users to satellites. Eventually, it led to the design of a system that surpassed the intended concepts such that a one-way system was developed to transmit signals with no receiving functions. This function was essential in that enemies could not detect signals being relayed within the confines of the military. Additionally, the developed system used microwave transmission technology, was equipped with the latest atomic clocks, could transmit signals regardless of the prevailing weather conditions, and provided accurate navigation and positioning details (Parkinson, and Spilker 1996). Due to the relatively cheap cost and inexpensive equipment, the GPS technology was availed freely to the civilian population. Structure and operations of the GPS As earlier mentioned, the Global Positioning System consists of 24 satellites, 21 of which are active while three (3) are spares and are located at an altitude of 10600 miles above the surface of the earth (El-Rabbany, 2002). The satellites are strategically arranged in orbits such that at any time of the day, at least four satellites are visible above the earth’s horizon. The receivers on the ground detect their positions in reference to the GPS satellites. The primary navigation principle is obtained based on the measurement of pseudoranges between the four satellites and the user (Seeber, 2003). Equally, the stations located on the ground provide precise monitoring of the orbit at every level of the satellite and measures the travel time signals transmitted between the four satellites and the receiver. In turn, the accurate direction, location, and speed is the measure. Structures of GPS Segments GPS segments are categorized into three distinct segments that include control segment, user segment, and space segment. The space segment contains at least 24 GPS satellites that follow a specific pattern when orbiting the earth (Seeber, 2003). The satellites travel at an approximate speed of 7,000 miles per hour, and the satellites are spaced such that at least four GPS satellites can send signals to a GPS receiver located anywhere on earth. From each GPS receiver, coded radio signals are sent to earth and each signal contains particular information. The information includes the particular satellite sending the information, the exact position of the satellite, date and time the signal was sent, and whether the satellite was performing properly. Satellites use solar energy, but they are also powered by backup batteries in the absence of solar energy (Seeber, 2003). Majority of the satellites have been built to last for approximately 10 years after which they are replaced. Monitoring , control, and replacement of space satellites and GPS technology is done by the US Department of Defense. The control segment entails constant monitoring of the health of satellites, the orbital configuration, and intensity of signals. The control segment is further subdivided into ground antennas, monitor stations, and master control station. There are at least six unmanned monitor stations all over the earth, each station is in constantly receiving, and monitoring information from GPS satellites and at the same time relays the clock and orbital information to master control stations (MCS). Similarly, Master Control Stations make precise corrections of orbital and clock information received from monitor stations. It sends the corrected information to ground antennas (Seeber, 2003). Last, the Ground Antennas are responsible for receiving corrected clock and orbital information from the Master Control Station and in turn, relays the corrected information to appropriate satellites. Finally, the user segment of the GPS systems is made up of GPS receivers, which are responsible for collecting and processing signals received from GPS satellites that are in the range. It then uses the collected information to find and display the location, time, speed, and altitude of the receiver (Seeber, 2003). No information is transmitted from the receiver to the satellites. Primary Functions of Global Positioning Systems Global Positioning systems perform an array of functions on land, in air, or at sea. There are specific features that make GPS systems be attractive. These includes the ability to provide high positioning accuracies, the capability to determine accurate time and velocity accuracies, readily available signals in any part of the world, the free services at no charge, and all all-weather service delivery system (Andrews, Weill, and Grewal, 2007). Above all, GPS technologies provide accurate position information in three dimensions (vertical and horizontal information). Currently, it is estimated that the number of civilian users exceeds the number of military users. In light of these characteristics, the global sectors are exceedingly utilizing the services of GPS technologies. GPS systems were initially designed for military purposes and they have remained significant in facilitating military operations. Military ships, aircraft, tanks, and equipment use GPS technology for navigation purposes, provision of close air support, improving weapon technology, and determining target destination. In agriculture, GPS technologies are used in precision farming to monitor the process of applying fertilizer and pesticides in addition to proving accurate location information that enable farmers to plow, map fields, harvest, and identify potential disease areas or weed infestation. In the aviation industry, aircraft and airplane pilots utilize GPS technology to identify en route navigation and airport approaches. Additionally, the accurate location of aircraft can be identified from any place on or near the earth’s surface through the help of Satellite navigation (Andrews, Weill, and Grewal, 2007). In environmental management, GPS technology has been utilized in surveying disaster prone areas, and as well in mapping the movement of environmental phenomena such as hurricanes or forest fires. Interestingly, GPS technology can also be used in the identification of locations that have been altered or submerged by natural disasters. Another area that utilizes GPS technology is Ground transportation. GPS technologies are used in vehicle tracking systems, in-vehicle navigation systems, and in automatic vehicle location systems. Majority of these systems shows the location of vehicles on an electronic sheet map thereby enabling drivers to track their exact locations and as well, get an overview of other destinations. Other systems are designed to automatically design a route and provide turn-by-turn directions to provide guidance to drivers. Furthermore, GPS technologies facilitates the process of monitoring and planning routes for emergency vehicles and delivery vans. Rail transport systems also use GPS technologies to estimate precise locations of trains, manage the flow of traffic, prevent collision of trains, and in the estimation of time, speed, and distance covered by trains (Andrews, Weill, and Grewal, 2007). In marine systems, GPS technologies assist in marine navigation, surveying underwater, routing traff ic, locating navigational hazards, and marine mapping. Moreover, commercial fishing fleets use GPS technology to identify and navigate to areas with optimum fishing opportunities and as well to track the migration of fishes. GPS technologies are also used for public safety such as locating emergency areas, and in recreation for finding bearings, estimating distance, time, and in returning to the original locations. Space science also utilizes GPS technologies to track and control the behavior and motions of satellites in orbit. Space shuttles and future rockets also depend on GPS technologies. Finally yet important, field of surveying heavily utilizes GPS technologies in both complex and basic tasks such as development of urban infrastructures and defining property lines respectively. Furthermore, mapping roads, rail systems, and surveying land maps is possible with the utilization of GPS technologies. Accuracy of Global Position Systems The accuracy of GPS systems depends with the precision of signals that emanate from GPS satellites to GPS receivers. Additionally, the number of obstacles that can obscure your receiver from the GPS systems are critical in the determining the precision and accuracy of information obtained from GPS systems. The types of receivers also play a significant role in the determination of GPS accuracy. Majority of GPS receivers have an accuracy range of +/- 10m. Other accurate forms of GPS receivers include Differential Global Positioning Systems (DGPS). The accuracy of most GPS systems is affected by errors. Common sources of errors to GPS systems include inaccuracies associated with the reported location of satellites (orbital errors), receiver clock errors, signal multipath that makes GPS signals bounce off objects, and number of visible satellites, which can affect position reading or impede signal reception (Tsui, 2005). Satellite Shading also affects the accuracy of the information. For instance, the ideal satellite geometry is achieved when satellites are widely located at angles that are relative to one another. Ideal Characteristics of Global Positioning Systems In order to obtain accurate information from Global Positioning Systems, specific factors should be put into consideration during the acquisition of GPS tools. First, the GPS tool should be durable to ensure that it is capable of withstanding rigors work and continued usage. Second, the ability of the GPS tool to obtain and maintain the most reliable signal strength despite the existence of obstructions such as the location, changing weather conditions, and the sensitivity of the receiver (Tsui, 2005). Third, GPS components consume a lot of power and therefore, battery life is a critical factor to consider during the acquisition of GPS equipment. Other noteworthy features include the portability ranges, cellular signal reliability, the length of acquiring GPS signals from satellites, configuration complexities, and ease of use among others. GPS Competitors The closest competitor of GPS technology is the Wide Are Augmentation System (WAAS) that consists of satellites and ground stations capable of providing accurate positioning. The WAAS technology was developed by the Federal Aviation Administration (FAA). A good example of WAAS is the European Geostationary Navigation Overlay Service (EGNOS). The WAAS program was specifically developed to assist pilots is determining direct en route paths, identifying precision approach services to runways, and to ensure maximum capacity and safety improvements in all weather conditions (Tsui, 2005). WAAS users are required to have WAAS-capable receivers to enable them obtain signals in areas covered by WAAS satellites. Results and Conclusions The analysis and discussion of Global Positioning System concepts has revealed that GPS technology is a force in the force. Perhaps the system designers had different intentions when developing and designing GPS technologies but these applications have added to the versatility of usage of GPS not only as a system for estimating the precise positioning of objects but also in the provision of accurate and reliable navigation information. Irrespective of time, location, and whether, Global Position System provides unparalleled range of services to commercial military and consumer applications. Majority of these services enables airborne, land, and sea users to know their exact velocity, location, and time whenever and wherever on Earth. Indeed, the GPS technology supports numerous positioning and navigation applications that satisfy a multitude of user needs. At this moment, the widespread usage of GPS applications in different sectors of the economy makes it exceedingly difficult to th ink of a life without Global Positioning Systems. It is evident that creating a complex system such as the GPS technology is not an easy task and this can be proven from the few competitors of GPS technology. GPS technologies and systems are used in different sectors of society. This includes road and rail transportation, marine navigation, agriculture, the airline industry, space science, recreation, military, and in the provision of public safety among others. Information and signals relayed by GPS systems are safe and reliable thereby making GPS technology the ideal navigation and positioning equipment. The evaluation and analysis of the structure, operation, and application of GPS systems have shown that maintaining the GPS technology is a complex activity given the nature of the GPS technologies. Notwithstanding these complexities, GPS services are maintained and offered free of charge thereby making it available for an unlimited number of users and applications. Global Positioning Systems have a potential future judging from the current technological advancements. Virtually, every communication and navigation device is manufactured or fitted with a GPS receiver. From basic consumer electronic products such as mobile phones to complex navigation and military tools such as ships, aircrafts, and weapons, are both built with GPS technologies (Tsui, 2005). Importantly, the Global Positioning System is also advancing at an increasing rate and therefore, more is still to be expected with regard to the future of GPS tools and applications. Despite the above advantages, a number of challenges that still impede the transmission of signals still exist within the limits of GPS technologies. Majority of these challenges includes errors such as inaccuracies associated with the reported location of satellites (orbital errors), receiver clock errors, signal multipath, and number of visible satellites, which can affect position reading or impede signal reception. These errors have an effect of affecting the signal strength and in turn, leading to inaccurate positioning and navigation information. Nonetheless, these challenges can be avoided by ensuring that GPS receivers and equipment are evaluated to test their reliability. Factors that must be considered during the evaluation of GPS systems include durability, the capability to obtain and maintain the most reliable signal strength, and power consumption (Tsui, 2005). As such, a number of procedures can be followed in evaluating GPS tools and equipment. These includes conducti ng an evaluation and testing exercise to ascertain the ideal characteristics, identifying the credibility of vendors, examining the legal considerations, and lastly, identifying ways of overcoming the challenges. Overall, there is potential in GPS technology provided corrective measures be taken and as well, there is the need to conduct immense research and innovation in GPS technology to ensure its sustainability. References Andrews, A., P., Weill, L. R., and Grewal, S. G. (2007). Global Positioning Systems, Inertial Navigation, and Integration. John Wiley Sons El-Rabbany, A. (2002). Introduction to GPS: the Global Positioning System. Artech House Kaplan, E. D. ed. (1996). Understanding GPS: Principles and Applications. Boston: Artech House Publishers. Parkinson, B. W., and Spilker. J. J. eds. (1996). Global Positioning System: Theory and Practice. Volumes I and II. Washington, DC: American Institute of Aeronautics and Astronautics, Inc. Seeber, G. (2003). Satellite Geodesy (2nd Edition). Walter de Gruyter Inc. Tsui, B. J. (2005). Fundamentals of Global Positioning System receivers: A software Approach. John Wiley and Sons

Convert Your Gasoline-Burning Car to Run on Propane

With the price of fuel, propane car conversions (also called LPG conversions) are attracting more attention. Propane is certainly one viable alternative fuel option: it has been used as a commercial motor fuel for more than 80 years and millions of miles. Its also less expensive to use than gasoline, even though the cost per liter is higher. Why It Can Be Tough to Convert to Propane The Environmental Protection Agency requires all vehicles to meet the same emission standards. While propane burns cleaner than gasoline, increased regulations from the EPA, means that there are very few propane conversion kits for U.S. street passenger vehicles available today. It has actually been a much more popular choice in Europe and other countries due to less stringent regulations and higher petrol prices. Even though propane powered engines offer cleaner emissions along with 10 to 15 percent less carbon dioxide, 20 percent less carbon monoxide and 50 to 60 percent fewer hydrocarbons and nitric oxide, tighter emissions regulations have changed the way conversion companies can do business. While generic propane conversions used to be common fare for a trained mechanic (generally not for the DIY-er, though), most four-stroke engines (carbureted and fuel-injected) can still be converted to operate on propane when a certified technician installs the correct kit. And propane’s minimal sooting, owing to its low carbon content, means increased engine life, fewer oil changes, and longer spark plug life. Why Conversion May Still Be a Good Idea Although it may take some legwork on your part, it can be worth converting to propane if you have a propane filling station in your area that makes fueling up easily accessible and less expensive. Unfortunately, there are relatively few U.S. propane conversion companies with an online presence that sell street-ready passenger car kits or do conversions (some have websites, many don’t). Prices for a full conversion by a qualified technician can range from $3,000 to $4,000. Hopefully, you’ll be close to one of the shops that are on RASO Enterprises’ extensive shop list (below), and they can help you go from there. Where to Find Conversion Kits Because of the scarcity of conversion companies, its unlikely that youll find one in your backyard. That said, however, these two companies may be able to provide you with what you need at a reasonable cost. Got Propane?  Based in Tempe, AZ, the eye-catching off-roading photos on this company’s website showcase propane’s ability to operate at any angle with no loss of power or fuel spillage. *Note: These kits are only for off-road vehicles, and this company does not sell kits for late model cars and trucks (1987 and newer).RASO Enterprises  In addition to selling kits, this company provides a wealth of information to help you find a certified conversion shop in the United States or Canadian conversion center. Most of these shops specialize in heavy duty/commercial vehicles with minimal offerings for passenger cars. There are links to find kits for your personal car fleet vehicles, (options are limited) or off-road  and agricultural equipment. This site also refers to TECHNOCARB, the manufacturer of many different conversion kits.

Racism and Stereotypes in the Movie Crash - 693 Words

Crash is a movie about race and stereotypes and its effects on the various people living in the Los Angeles area. The movie boost racial awareness and it requires close observation from the viewer. We see a variety of races including African American men and women, several Hispanics, a Middle Eastern family, and a few Asians. We see the ups and downs of each character and it helps us see where they are coming from, and potentially why they are racist against different people. It seems that we almost begin to feel sorry for the different characters regardless of what they are doing or how they are acting because of each of their circumstances. This film follows many criticisms based on the representation of race, culture, and demographics. Crash deals mainly with the topic of racism that can be said to be part of our concern and wonder if it can ever be erased. This movie is trying to show what goes on in the world today with regards to racism and stereotypes. It is an influence of a film because of the general ideas it portrays that are somewhat positive but mostly negative. We see so much racism throughout the movie and some of it is justified. At the beginning of the movie we see a well to do white women clench the arm of her well to do white husband when she sees two black men, but then those same black men go on to steal their car at gun point. Is her concern justified or did would these men had left them alone if she would not have shown racism to them. The racismShow MoreRelatedEssay on Black Like Me and Crash965 Words   |  4 PagesBlack Like Me and Crash In 1959 John Howard Griffin, the author of the book Black Like Me, disguised himself as an African American and decided to go live out in society to see what it would be like to be a black man. The book Black Like Me is his documentation of that experience. 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Essay About Agatha Christie Example For Students

Essay About Agatha Christie In the murder mystery by Agatha Christie, Murder on the Orient Express, her style of writing can be described as one of Christies best works, having an international trend, and being a genius with detective fiction. Murder on the Orient Express was a great book and should be read by all. Agatha Christie is the worlds best known mystery writer.; (Harper) All of her novels are known around the world as being very excellent. No one has read a Christie murder mystery they have not liked. Murder on the Orient Express is one of her most famous books. This book is famous because it turns on a piece of misdirection and a solution which, in their day, were startlingly innovatory.; (Lejeune) Throughout the whole novel, your thoughts are changed numerous amounts of time. You never know what is going to happen next. Agatha Christie knows just how to keep you interested in the story and to keep you wanting to read more and more. If you had to choose one of Christies novels to read, you should pick Murder on the Orient Express. Not only is she the best known mystery writer, but she is also known around the world. She is the most widely published author of all time in any language, outsold only by the Bible and Shakespeare.; (Harper) All of Christies works are sold around the world and also known to have an international trend. She puts a variety of characters in all of her novels. Murder on the Orient Express has characters from all over, such as Germany, Istanbul, France, America, Britain, and England. This international trend in Christies views can be noted in Murder on the Orient Express. A slight shift is perceptible here in the British stock characters, and men like Christies Colonel Padgett 2Arbuthnot one of the Orient Express passengers, are already beginning to seem quaint and old-fashioned.; (218) She makes her stories even more interesting when she uses people from all over the world. When she writes using these people, she also adds in the language in which these people speak as well as placing them in different countries than from where they are originally from. When she mixes dif ferent people and cultures together, it makes the stories more fun and it even helps to make them more mysterious. All of Christies novels even contain the same characters. There are a variety of stories other than Murder on the Orient Express that contains the popular detective Hercule Poirot. He is known as a great detective in all of her works. He always get the murder figured out, no matter how long it takes him. He figures out who did the crime in Murder on the Orient Express while on a stopped train with 12 other passengers. It took him all night. He had to interview all of the passengers one at a time, look at all of the possible evidence, and examine the dead body of the victim. When you finally figured out the murderer of the man, you were shocked. You had no idea it was going to be who Mr. Poirot said it was. Agatha Christies genius for detective fiction is unparalleled.; (Harper) Murder on the Orient Express by Agatha Christie, can be described as one of her best works, h aving an international trend, and being a genius for detective fiction. Her worldwide popularity is phenomenal, her characters engaging, her plots spellbinding. No one knows the human heart-or the dark passions that can stop it-better than Agatha Christie. She is truly the one and only Queen of Crime.; (Harper)