The Adventures of Ibn Battuta

Abu Abdallah Ibn Battuta was a renowned scholar and an explorer before the western civilization. Born and brought up in Morocco, Ibn Battuta left his country at about 21years to visit the city of Mecca, a holy city of Muslims in Saudi Arabia. Because of his spirit of adventure, he would venture into other regions of Asia, always taking the route of the high seas. In his journey and being a learned man, he would encounter various experiences, some of which were good while others were dangerous.Advertising We will write a custom essay sample on The Adventures of Ibn Battuta specifically for you for only $16.05 $11/page Learn More He would be invited in a number of palaces in various kingdoms because of his knowledge on Sharia law. Some of these kings would send him as an emissary to other kingdoms. In some instances, he would encounter high sea pirates and other unfortunate incidents at the sea. The book ‘The Adventures of Ibn Battuta, A Muslim Trave ler of the Fourteenth Century’ by Ross brings out this encounter. Ibn Battuta was born in a Muslim family. In his early life, he was taken to a school within his country where he learnt sharia law (Dunn 2). This book brings out Sharia law as one of the important aspects of an Islamic society. By the fact that Ibn Battuta had learned law, he was viewed as an important man in the society. This section brings out education as an important factor in many societies. Because he was educated, Ibn Battuta was easily accepted in various kingdoms. He would always dine with the mighty because to them, he was a scholar who had amassed a lot of knowledge not only through classroom learning, but also from his experience gained in his frequent voyages to various regions. This book brings out political authority of various kingdoms. Dunn (15) notes that in early nineteenth century, there was a political rift in the northern part of Africa as the Sultans who were governing the region failed t o deliver leadership that was expected. As Dunn notes in page 14, the Sultans failed to control commerce in this region, a fact that led to the fall of the economy of the empire. This created tension among various kingdoms in this region that would latter translate to war. The author brings out the desire by various kingdoms to expand their regions of influence. This could only be achieved through war. The Northern Iberia Christian Kingdom took the offensive (Dunn15). Through formation of alliances with forces of Aragon including Portugal and Castile, the Iberia Kingdom managed to overpower the Sultans’ army at the battle of Las Navas. This was the beginning of the downfall of various Islamic kingdoms. The author has successfully brought out the military history of North African kingdoms and other regions in the world such as Portugal and the Aragon. Slavery was actively practiced during this time. Those who were captured during the war were taken as slaves to run various err ands. Portugal was specifically keen on acquiring slaves to work on their plantations back at home.Advertising Looking for essay on asian? Let's see if we can help you! Get your first paper with 15% OFF Learn More This book also focuses on non Muslim life. Through his travels, Ibn Battuta visited various cities that were not practicing Islamic culture. His visit to Damascus brings to focus the Jewish way of life (Dunn 58). The Christian culture is also brought to fore. The Aragon, Castile and Portugal were regions that were predominantly Christian. Their way of life was based on the teachings of Jesus Christ. The author gives a detailed analysis of how Christianity related to Islam. Both religious groups were determined to spread their ideologies to other parts of the world. This involved serious battles between the two sides. Jihad, an Islamic holy war, would be launched against the forces of Christian empires, in case this was necessary. In his education, Ibn Battuta was introduced to Sufism (Dunn 24). Sufism were beliefs that went beyond the koranic teachings. It brought out hope and optimism to individual Muslims, by making them believe that they could directly communicate with God without the assistance of anyone. Sufism was embraced by many scholarly Muslims of this period, and they used it to spread Islam to various regions of the world. It was easier to use Sufism as a way of spreading this religion because it was motivating and popular among the youths. Strict Islamic laws governed most families in Islamic countries that Ibn Battuta visited. No one was expected to go against these teachings. Although there was a difference in the way different Islamic countries held the teaching of the Quran, there were many practices that were identical across the regions. Ibn Battuta notes that the dress code among the Muslims was universal. From his country Morocco where he was born and brought up, to Saudi Arabia and other countries in Asia and parts of Africa, Muslim men would wear a white gown on top of whichever clothe he chose to wear. The ladies were expected to wear abaya (a black cloak that covers up to the legs) and a niqab that would cover the face (Dunn 86). Also similar was the time and manner or prayer. Regardless of the location, Muslims followed a similar pattern in prayer. Women had their role in the family, and so were men. Although this differed from one region to another, the teachings of the Quran made most of these practices closely related. Ibn Battuta observes that women in Saudi Arabia were very submissive to their husbands than in any other Islamic country. This was mainly because this country followed Quran very strictly and would not hesitate to punish anyone seen to be going against these teachings. In this country, Women were expected to be subordinate to their husbands in all respects. The author also brings to fore different ethnic groups, and their family structures. Chinese, Tibetans, Turkish, an d Persian cultures slightly contradicted what was practiced among the staunch Islamic societies (Dunn 88).Advertising We will write a custom essay sample on The Adventures of Ibn Battuta specifically for you for only $16.05 $11/page Learn More Technological advancements had also started taking shape. In china, different architectural designs were developed to symbolize their technological advancements. They also practiced other things such as painting, calligraphy, textile and pottery designs. These arts were developed because the society had advanced technologically and there was need for better housing units and home appliances (Dunn 88). This book is a comprehensive cover of the experience of Ibn Battuta in his tours around the world. In this book, several factors are brought forth in relation to post Mongol Islamic world. The battle for political supremacy, the art and architecture, slavery, ethnicity, culture and religion, education and technology are some of the factors that come out clearly in this book. They are expertly intertwined with the experience of Ibn Battuta in his quest to tour the world. Works Cited Dunn, Ross. The adventures of Ibn Battuta, a Muslim traveler of the fourteenth century. California: University of California Press, 1986. Print. This essay on The Adventures of Ibn Battuta was written and submitted by user Kolten F. to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

Cutting and Scarification Research Paper

Cutting and Scarification Research Paper Free Online Research Papers An intense piercing fire burns you, and a thin line of blood creeps up where the blade has just been. If you identify with this sentence, then cutting might be something you enjoy. There are a lot of things to think about if you want to try cutting or even if youre already a cutter. These things include where and how deep you cut, what you cut with, and cleanliness. Picking a location to cut is pretty important. You dont want to cut over anyplace that has veins or arteries close to the surface of the skin. This means that recreational cutting on someplace like your wrist is bad. Also avoid places with bone close to the skin. The outside of your upper arm and the top of your thigh are good places. After youve picked a location, wipe or spray the skin there with alcohol to ensure that its clean. There are a number of things that can be used to slice on skin, but just because you can use it, doesnt mean you should. Note that there is always a risk of scarring when you are cut, but the sharper the blade and the less deep you cut, the lower your risk is of scarring. That said, you should always pick a sharp blade to use when cutting. You might get disposable scalpels from a medical supply store or from online stores that sell tools specifically for body modification. A knife with a clean smooth blade may be used if it has been very well sharpened and sterilized. Those that are interested in play piercing and have the needles on hand may want to use the tip of a new hypodermic needle. For beginning cutters, the lancets used when testing blood glucose do well because its harder to cut yourself deeply with them. This will allow you to get used to how deep a cut can be made and how to avoid cutting to deeply. Cleanliness is an incredibly important thing when cutting. Use alcohol to clean your skin and the tools you use. Having alcohol prep pads or a spray bottle full of alcohol makes this easier. Gauze pads, butterfly bandages, medical tape, and antibiotic ointment are useful to have handy for when the cutting is done. When you are through making your cuts, lay a gauze pad over the wound and give it one or two solid slaps or a punch. If you cant do this yourself, have a friend near by to do it for you. This will prevent a hematoma (swelling at the site where a blood vessel is broken) from forming by compressing the ends of the cut vessels. Note that while this covers some of the basics of cutting, no article can replace the knowledge of an experienced and safe cutter, and it is best to cut with experienced supervision. Body modification of any sort is something that should be given great thought to and decided on with a sound mind. If your desire to cut comes from depression, then its best that you seek treatment from a medical health professional rather than self medicating with pain. Research Papers on Cutting and Scarification Research PaperNever Been Kicked Out of a Place This NiceThe Effects of Illegal ImmigrationTwilight of the UAWThe Relationship Between Delinquency and Drug UseGenetic EngineeringStandardized TestingDefinition of Export QuotasBionic Assembly System: A New Concept of Self19 Century Society: A Deeply Divided EraThe Hockey Game

Parts and Functions of the Conducting Zones and Respiratory Zones Essay

Parts and Functions of the Conducting Zones and Respiratory Zones - Essay Example The conchae push the air to the wall of the conducting zone, and the respiratory mucosa picks the contaminants that pass through the nose. The other parts involved in the filtration are cilia. Cilia are involved in pushing the contaminants that are trapped by the mucus to the larynx. The contaminants that reach the larynx with the help of cilia are either swallowed or spit out. The other function that occurs in the zone is warming of the air. Air is warmed by the fact that it passes through the conducting zone. On the other hand, the respiratory zones comprise of various parts. These parts are involved in gas exchange. The parts include terminal bronchioles and alveolar sacs. Their main role is to ensure there is a gas exchange. There are mechanisms in which carbon dioxide is carried in the blood. The transport of CO2 takes place in three ways. The first way in which CO2 is transported is through dissolving in plasma. About 7-10 percent of the gas is dissolved through this process. The second way in which the gas is transported is getting attached to the globin of hemoglobin. It is estimated that about 20 percent of the gas is transported by this route. The third way in which the gas is transported is through bicarbonate ions (HCO3–) in plasma. The majority of CO2 is transported through this process and is estimated to be about 70 percent of gas transported. The filtration process takes place in the glomerular capsule. The two main vessels involved in this process are the afferent arteriole and efferent arteriole. The afferent arteriole enters the capsule to form a capillary bed called the glomerulus. The capillaries have small openings in terms of pores. In these pores, the filtered material passes and includes urea, uric acid, water, hydrogen ions, and ions. The efferent arteriole exits the capsule carrying nonfiltered components such as blood, glucose, vitamins, proteins, white blood cells, and platelets.  

Confucianism And Education In Asia Essay Example | Topics and Well Written Essays - 1750 words

Confucianism And Education In Asia - Essay Example Additionally, the article argues that Confucian based education encourages students to be passionate about education. Kristof states that United States ought to borrow some ideas from Confucian based education systems (Kristof Web). How Confucianism Affects Education Confucian is a traditional outlook and practices followed in East Asian countries, which are based on teachings of Confucius, a Chinese philosopher who lived between 551 and 479 BCE. Confucianism emphasizes on ethics as well as statecraft. Confucius believed that education was the only way that one could earn appropriate social status in addition to material success. Additionally, he claimed that education helped foster harmony and morality in the society. Due to this believe, Confucian countries lay a lot of emphasis on education in terms of the fund set aside to facilitate education. Additionally, the parents tend to pressure their children to work hard and prosper academically. This has led to higher performance in Co nfucian countries (Gove and Huang 10-13; Phuong-Mai, Cees and Albert 1-3; Kristof Web). Learning is a process influenced by interaction of many factors many factors. The world or the environment that one learns in plays a role in determining ones perceptions toward education hence the possibility of succeeding or not succeeding. Culture is one of the factors that determine the modes of learning as well as the development of education policies. Most Asian schools follow Confucian ideas in teaching. Confucianism is one of the greatest stimuli of education in most Asian countries such as Singapore, China, Japan, South Korea, and Hong Kong. Confucianism entails a lot of strictness, demand for students to... This essay stresses that Confucian is the main difference that segregates education in the Asian countries from that in Western countries. Additionally, the notion that Confucianism encourages surface learning, which is inadequate for future performance in jobs, is not correct. This is because Students from Confucians countries have been regarded as good performance even in their jobs. It is true that students in counties such as Hong Kong considerably depend on deep memorizing to pass their exams, but the fact that they end up outdoing their western counterparts means that Confucianism is an appropriate approach worth emulating. This report makes a conclusion that Confucianism, a cultural approach that emphasizes on education as the path that enables success in life is responsible for the improved performance in Confucian countries such as Singapore, Hong Kong, South Korea, and China. This is according to Kristof, who adds that the strict nature demanded in Confucian educations systems cultivated good attitude towards education. This argument is true and can be supported by the recent international findings that ranked student from Confucian countries as the best performing in math, science and reading. Since culture plays a role in modeling the learning environment, it is appropriate to argue that Confucian culture is responsible for this performance since the west students have been outdone by Confucians students irrespective of the believe that Confucianism is inefficient since it entails memorizing.

St. Lucy's Home for Girls Raised by Wolves Essay

St. Lucy's Home for Girls Raised by Wolves - Essay Example Russell uses vivid description to develop the different aspects of her story. A close analysis of the story reveals that she explores multiple gender issues. In a bid to analyze this gender issue, this paper will offer a gender perspective analysis of her work. In addition, it will also consider the historical and the cultural perspective portrayed by the author as she developed her story. In her story, Russell tackles certain critical gender issues that are of interest to many literary analysts. One of them named Natalyalc commenting of Russell’s book online said, â€Å"The story also seems to have gender roles as the main theme†¦Ã¢â‚¬  She continues to say, â€Å"Because they have separate homes for male and female wolves and furthermore taught differently.† The fact that the story is centered on 15 wolf girls struggling to acculturate and assimilate into the human society introduces a gender based perspective. She mentions that, brothers of the girls were in a separate home. The fact that girls and boys did not learn the new culture in an integrated system is an emphasis on the existing gender differences, and the conservative nature of the society concerning the gender roles. The 15 girls undergo a rigorous transformational process as the nuns struggle to shape civilized women out of them. Most of the activities they indulge in are defined by the gender roles evident in the society. One nun tried to help Mirabella conform to feminine behavior as Russell describes when she says, â€Å"Shed sit down with Mirabella and pry her fingers apart. â€Å"You see?" shed say softly, again and again. "What are you holding on to? Nothing, little one. Nothing† (Russell 241). For example, they were expected to learn how to walk with composure as ladies. Moreover, the nuns make efforts of combing the hair in order to give them a feminine look evident when the narrator says, â€Å"The sisters swept out hair back into high, bouffant

Vehicle ad-hoc Network (VANETS) Technology

Vehicle ad-hoc Network (VANETS) Technology Chapter 1 Introduction Now a day, everything is moving away from wired technology and leading towards wireless. The fascination of mobility, accessibility and flexibility makes wireless technologies the dominant method of transferring all sorts of information. Satellite televisions, cellular phones and wireless Internet are well-known applications of wireless technologies. This work presents a promising wireless application and introduces a tiny contribution to its research community. Research in wireless communication field is growing faster, day by day, then any other field. It serves a very broad range or series of different kind of applications using different topologies. Every one of these comes with some new and specialized protocols. In this research, we will present an introduction to a wireless technology. This wireless technology directly affects car accidents and the sales of one of the largest markets. It is the technology of building a strong network between mobile vehicles; i.e. let vehicles communicate to each other. This promising technology is literally called Vehicular Ad-Hoc Networks (VANETs). 1.1 Background Since the first invention of mobile vehicles, governments and manufacturers have researched accidents to reduce the number of vehicle crashes in order to reduce costs, injuries and fatalities. First of all, VANET technology is going to reduce crashes by doing research in this field. Accordingly, related governmental authorities initiated new projects to the learning institute for study, research, development in the field of wireless technology and VANETs also paying attention in its standards. The ‘Dedicated Short Range Communications (DSRC) [1] is a pioneer ITS (Intelligent Transportation Systems which is a branch of the U.S. Department of Transportation [2]) project dedicated to VANET standardization. Then, the acronym or short form ‘DSRC becomes a global or familiar name of kind of standards that aim to put VANET technology into life. The DSRC mainly concerns with the communication that is how to make different communication links between vehicle-to-vehicle and vehicle -to/from-roadside units. 1.2 Motivation In the last few years, vehicular network has gained great attention in industry. Federal communication commission (FCC) has assigned 5.850-5.925GHZ frequency band to promote safe and efficient road trips, which is planned for vehicle-to-vehicle and vehicle-to-infrastructure communication. Car manufacturers, e.g., Audi, BMW and DaimlerChrysler, also formed a Car2Car communication consortium [3], in which the prototype development for inter-vehicle communications is underway. In near past, IEEE 802.11-based solutions for VANETs are also studied by IEEE 802.11p. IEEE 802.11p Wireless Access in the Vehicular Environment (WAVE) that defines changes to IEEE 802.11 to help Intelligent Transportation Systems (ITS) applications. IEEE 802.11p helps data exchanges between fast moving vehicles with each other and also exchanges data from vehicles to road side unit or from road side unit to vehicles in the licensed ITS band of 5.9 GHz. The Dedicated Short-Range Communications (DSRC) at 5.9 GHz is here today to provide safety that is increasing safety in case of road accidents, reducing highway or road maintenance cost and also improving mobility. Intersection and road departure collisions report for round about 50 percent of all crashes and victims on our roads. On an average day in the United States, vehicular collisions kill 116 and injure 7900[8]. More health care dollars are consumed in the United States treating crash victims than any other cause of illness or injury [8], [10]; the situation in the European Union is similar, with over 100 deaths and 4600 injuries daily, and the annual cost of â‚ ¬160 billion [11]. By getting rid from road victims and crashes, DSRC can provide or play important role in reducing road accidents, deaths, injuries, heavy traffic and increasing road safety by improving communication between vehicles and between vehicles and road side infrastructure. DSRC emerged from a partnership among automobile manufacturers, state and federal transportation officials, toll transponder equipment suppliers and the Federal Communications Commission. There is a recognized need for on-the-go communication with motor vehicles and reliable communication between vehicles to increase highway safety by providing warnings and alerts that enable drivers to take corrective and/or evasive actions. At the same time, it can be able to provide information i.e. real time information to drivers so that to improve mobility and motorist conv enience, such as information on congestion or traffic incidents. The car manufacturing industrys determination to roll out vehicle-to-vehicle communication in the near future and, on the other hand, to the increasing disillusionment concerning the need for the vast number of protocols developed for general Mobile Ad-Hoc Networks (MANETs) in the past few years while on the other side that is for VANETs, industry pressure has created a situation in which an overwhelming interest in solutions to problems leads to a preference for real-world research as opposed to fancy theory. As the concept came from MANETs which totally depend on the subscribers motion as the motion is random it is difficult to cater it but this problem was very negligible when researchers observed it in VANETS. At highways vehicle move in an organized pattern with different speeds so initially it seemed that VANET will easily be implemented. Another major reason for VANET can be Traffic deaths and injuries which is a major health and social issue. While industrialized nations (e.g., the United States) have continuously reduced annual traffic deaths since 1970, annual traffic-related fatalities and injuries remain high (in the United States alone there were over 41,000 deaths and 5 million injuries in 2000, according to the NHTSA) [7]. The economic impact of vehicle crashes in the United States exceeded US$230 billion or 2.3 percent of the U.S. GDP in 2000 [7]. We want to remain connected with the world through net whether at home, airport, at work or even on the roads. Example Description Obstacle warning Stopped/Skidding/Slowing down vehicle warning, road obstacle/object-on-road warning Lane Merge/Lane Change Assistance Merging/Lane changing vehicles communicates with vehicles in lane to safely and smoothly merge. Adaptive Cruise/Cooperative Driving Automatically stop and go smoothly, when vehicles are in heavy roadway traffic; cooperates driving by exchanging cruising data among vehicles. Intersection/Hidden Driveway Collision Warning vehicles communicates to avoid collisions at intersections without traffic lights or hidden driveway. Roadway Condition Awareness Vehicles communicates to extend vision beyond line of sight (e.g. beyond a big turn or over a hill) Table-1.1: Example of Vehicle Safety Communication [10] 1.3 Scope of Project Some of the industries and universities working on VANETs are as follow DaimlerChrysler AG Fraunhofer FOKUS NEC Europe Ltd. Robert Bosch GmbH Siemens AG TEMIC Telefunken Microelectronic GmbH Universities of Mannheim, Hamburg-Harburg, Karlsruhe, and Hannover. 1.4 Organization of Project Thisthesisis mainly divided into four chapters. In the first two chapters (1-2) introduction and an overview over the topic and used technologies is given. In the following chapter (3), we have discussed the standards of IEEE and also discussed the MAC Layer and PHY Layer of IEEE 802.11 in detail. In chapter 4, simulation analysis of our work is shown along with the results. In the last chapter, we have summarized this whole thesis, what we have concluded from this project and future work needs to be done are discussed. Finally, in appendix some additional information can be found. In chapter two, VANETs characteristics, some of its applications and the research challenges faced by governments and car manufactures are discussed, continued by MAC Layer and PHY in chapter three. We have also discussed the WAVE architecture in chapter 2. From chapter three on, we have a look at some protocol improvements and extensions. Some thoughts, tests and their results on VANETs, those are related to our work, can be found in chapter 4. Chapter 2 VANETs VANETs (Vehicle ad-hoc Networks) is a form of Mobile Ad-hoc Networks (MANETs), which provide a communication between the vehicles and also fixed equipments, usually defined as road side equipments. 2.1 What is VANET Vehicle ad hoc network comprises of three words. i. Vehicle ii. Ad-hoc iii. Networks i. Vehicle â€Å"A machine such as a bus or car for transporting people or goods†. [4] A lot of progress is happening in the field of vehicles since the invention of wheel. Development is due to provide services to the people and make their task easier. ii. Ad-hoc It refers to dealing with special situations as they occur rather than functions that are repeated on a regular basis. For example you just meet someone outside your office and you exchange some words. On the other hand infrastructure system is a system which is fully installed and deployed than it works according to some predefined rules and regulations. iii. Network â€Å"A system, as in a business or university, consisting of a computer or computers and connected terminals, printers etc. specific, a local area network†.[3] The concept of networking is introduced because resources are limited and we have to utilize them efficiently. As it is not possible for firms to provide printer, faxes and other machines to everyone so they just inter linked all the devices so that each one can utilize it keeping the cost at minimum. Vehicular connectivity can be fairly considered a future killer application, adding extra value to the car industry and operators services. Taking into account the constant growth of automotive market and the increasing demand for the car safety, also driven by regulatory (governmental) domain, the potential of car-to-car connectivity is immense. Such system should be suitable for a wide spectrum of applications, including safety related, traffic and fleet control and entertainment. First, issues concerning architecture, security, routing, performance or QoS need to be investigated. Standardization of interfaces and protocols should be carefully planned to ensure interoperability, as vehicles coming from different vendors must communicate seamlessly. Having different competing systems would result in decreased market penetration and poor overall system efficiency, thus only one common system can be deployed. And finally, wise deployment strategy has to be proposed, as most applicatio n would become functional only after certain market penetration is reached. The first milestone of standardization process was the allocation of 75 MHz of DSRC (Dedicated Short Range Communications) spectrum to accommodate Vehicle-to-Vehicle (V2V) and Vehicle-to- Infrastructure (V2I) communication for safety-related applications by US Federal Communications Commission (1999). Commercial applications are also allowed to operate in this spectrum. 2.2 VANETs Applications According to the DSRC, there are over one hundred recommended applications of VANETs. These applications are of two categories, safety and non-safety related application. Moreover, they can be categorized into OBU-to-OBU or OBU-to-RSU applications. Some of these applications are as followed: 2.2.1 Co-operative Collision Warning Co-operative collision warning is an OBU-to-OBU safety application, that is, in case of any abrupt change in speed or driving direction, the vehicle is considered abnormal and broadcasts a warning message to warn all of the following vehicles of the probable danger. This application requires an efficient broadcasting algorithm with a very small latency. 2.2.2 Lane Change Warning Lane-change warning is an OBU-to-OBU safety application, that is, a vehicle driver can warn other vehicles of his intention to change the traveling lane and to book an empty room in the approaching lane. Again, this application depends on broadcasting. 2.2.3 Intersection Collision Warning Intersection collision warning is an OBU-to-RSU safety application. At intersections, a centralized node warns approaching vehicles of possible accidents and assists them determining the suitable approaching speed. This application uses only broadcast messages. In June 2007, General Motors ‘GM addressed the previously mentioned applications and announced for the first wireless automated collision avoidance system using vehicle-to-vehicle communication (Figure-2.1), as quoted from GM, If the driver doesnt respond to the alerts, the vehicle can bring itself to a safe stop by avoiding a collision. 2.2.4 Approaching Emergency vehicle Approaching emergency vehicle is an OBU-to-OBU public-safety application, that is, high-speed emergency vehicles (ambulance or police car) can warn other vehicles to clear their lane. Again, this application depends on broadcasting. 2.2.5 Rollover Warning Rollover warning is an OBU-to-RSU safety application. A RSU localized at critical curves can broadcast information about curve angle and road condition, so that, approaching vehicles can determine the maximum possible approaching speed before rollover. 2.2.6 Work Zone Warning Work zone warning is an OBU-to-RSU safety application. A RSU is mounted in work zones to warn incoming vehicles of the probable danger and warn them to decrease the speed and change the driving lane. 2.2.7 Near Term [5] Traffic Signal Violation Warning Curve Speed Warning Emergency Electronic Brake Lights 2.2.8 Mid Term [5] Pre-Crash Warning Cooperative Forward Collision Warning Left Turn Assistant Lane Change Warning Stop Sign Movement Assistance Application Comm. type Freq Latency Data Transmitted Range Traffic Signal Violation 12V One-way, P2M 10 Hz 100msec Signal Status, Timing, Surface Heading, Light Position, Weather 250m Curve Speed Warning 12V One-way, P2M 1 Hz 1000msec Curve Location, Curvature, Speed Limit, Bank, Surface 200m Emergency Brake Light Vehicle to Vehicle Two-way, P2M 10 Hz 100msec Position, Deceleration Heading, Velocity 200m Pre-Crash Sensing Vehicle to Vehicle Two-way, P2P 50 Hz 20msec Vehicle type, Yaw Rate, Position Heading, Acceleration, 50m Collision Warning Vehicle to Vehicle One-way, P2M 10 Hz 100msec Vehicle type, Position, Heading Velocity, Acceleration, Yaw Rate 150m Left Turn Assist 12V and V21 One-way, P2M 10 Hz 100msec Signal Status, Timing, Position, Direction, Road Geom., Vehicle Heading 300m Lane Change Warning Vehicle to Vehicle One-way, P2M 10 Hz 100msec Position, Heading, Velocity, Acceleration, Turn Signal Status 150m Stop Sign Assist 12V and V21 One-way 10 Hz 100msec Position, Velocity, Heading, Warning 300m Table-2.1: Eight high-priority vehicular safety applications as chosen by NHTSA and VSCC. Note that communication freq. ranges from 1-50 Hz and Max. Communication range spam 50-300 meters. P2M represents â€Å"Point-to-Multipoint†, 12V represents â€Å"infrastructure to vehicle† and V21 represents â€Å"Vehicle-to-Infrastructure†. [5] 2.2.9 Comfort related applications Traffic efficiency Better navigation Internet access The whole theme of these applications is improving passengers comfort and traffic efficiency. That includes nearest POI (Points of Interest) localization, current traffic or weather information and interactive communication. All kinds of applications might be applied here. Another application is reception of data from commercial vehicles and roadside infrastructure about their businesses (wireless advertising). Enterprises (shopping malls, fast foods, gas stations, hotels) can set up stationary gateways to transmit marketing data to potential customers passing by. The important feature of comfort/commercial applications is that they should not interfere with safety applications. In this context traffic prioritizing and use of separate physical channels is a viable solution. 2.2.10 Safety related applications Accidence avoiding Danger warnings Intersection coordination Cooperative driving Safety-related applications may be grouped in three main classes: assistance (navigation, cooperative collision avoidance, and lane-changing), information (speed limit or work zone info) and warning (post crash, obstacle or road condition warnings). They usually demand direct communication due to their delay-critical nature. One such application would be emergency notifications, e.g. emergency braking alarms. In case of an accident or sudden hard breaking, a warning is sent to the subsequent cars. That information could also be propagated by cars driving in the opposite direction and, thereby, conveyed to the vehicles that might run into the accident. Another, more advanced example is cooperative driver assistance system, which exploits the exchange of sensor data or other status information among cars. The basic idea is to broaden the range of perception of the driver beyond his field of vision and further on to assist the driver with assistance applications. Transmitting this data to cars following on the same road, drivers get information about hazards, obstacles or traffic flow ahead; hence driving is more efficient and safer. Some applications of this kind are operating only when certain penetration of VANET enabled cars is reached. [6] 2.3 VANETs Characteristics Although VANETs, Wireless Sensor Networks and Wireless Mesh Networks are special cases of the general MANETs, VANETs possess some noticeable characteristics that make its nature a unique one. These properties present considerable challenges and require a set of new especially designed protocols. Due to the high mobility of vehicles, that can be up to one hundred fifty kilometers per hour, the topology of several VANET changes frequently and unexpectedly. Hence, the time that a communication link exists between two vehicles is very short especially when the vehicles are traveling in opposite directions. A one solution to increase the lifetime of links is to increase the transmission power, but increasing a vehicles transmission range will increase the collision probability and mortify the overall throughput of the system. The other solution having a set of new protocols is employing a very low latency. Another effect of these high speed nodes is that the usefulness of the broadcasted messages is very critical to latency. For example, if we assume that a vehicle is unexpectedly stopping or suddenly stops, it should broadcast a message to warn other vehicles of the probable danger. Considering that the driver needs at least 0.70 to 0.75 sec to initiate his response [7], the warning message should be delivered at virtually zero sec latency. In VANETs, location of nodes changes very quickly and unpredictably, so that, building an efficient routing table or a list of neighbor nodes will tire out the wireless channel and reduce the network efficiency. Protocols that rely on prior information about location of nodes are likely to have a poor performance. However, the topologies of a VANET can be a benefit because vehicles are not expected to leave the covered road; therefore, the running direction of vehicles is predictable to some extent. Although, the design challenge of protocols in wireless sensor networks is to minimize the power consumption, this is not a problem in VANETs. Nodes in VANETs depend on a good power supply (e.g. vehicle battery and the dynamo) and the required transmission power is small compared with power consumption of on-board facilities (e.g. air-condition). It is predicted that, as VANET is deployed in the beginning, only a small percentage of vehicles will be outfitted with transceivers. Thus, the benefits of the new technology, especially OBU-to-OBU applications, will not go up until many years. Furthermore, the limited number of vehicles with transceivers will lead to a numerous fragmentation of the network. Even when VANET is fully deployed, fragmentation may still exist in rural areas, thereupon, any VANET protocol should expect a fragmented network. Privacy, safety and security are of fundamental effect on the public receiving of this technology. In VANETs, every node represents a specific person and its location tells about his location. Any requirement of privacy can ease a third party monitoring persons daily activities. However, from the other point of view, higher authorities should gain access to identity information to ensure punishment of illegal actions, where, there is a fear of a possible misuse of this feature. The tampering with messages could increase false alarms and accidents in some situations defeating the whole purpose of this technology. Finally, the key difference between VANET protocols and any other form of Ad-Hoc networks is the design requirement. In VANETs, the key design requirement is to minimize latency with no prior topology information. However, the key design requirement of Wireless Sensor Network is to maintain network connectivity with the minimum power consumption and the key proposed design requirement of Wireless Mesh Network is reliability. WE can summarize the main characteristics of VANETs as follows; High mobility of nodes No prior information about the exact location of neighbor nodes Predictable topology (to some extent) Significant latency requirement especially in cases of safety related applications No problem with power Slow migration rate High possibility to be fragmented Crucial effect of security and privacy 2.4 Research Challenges in VANETs When deploying of a vehicular networking system, a number of issues have to be determined, often from distant fields of expertise, ranging from applications improvement up to efficient issues. VANET could be considered as an instantiation of MANETs (Mobile Ad hoc Networks); however their behavior is fundamentally different. These unique characteristics of these networks are as follows: Rapid topology changes and fragmentation, resulting in small effective network diameter Virtually no power constrains Variable, highly dynamic scale and network density Driver might adjust his behavior reacting to the data received from the network, inflicting a topology change Here we briefly mention some of the core research challenges that need to be discussed. 2.5 Wireless Access technology There are several wireless access standards that could be used as a foundation for VANET technology. In general the major seek is to provide a set of air interface protocols and parameters for high-speed vehicular communication by mean of one or more different media. 2.5.1 Cellular technology (2/2.5/3G) The key role of 2/2.5G i.e. cellular technology are coverage and security, and 3G, slowly but steadily coming over 2/2,5G, provides enhanced and better capacity and bandwidth. Several telematic and fleet management projects already uses cellular technology (e.g. SMS reports), on the other hand it is comparatively more expensive, together with limited bandwidth and latency make it impossible to use as a main communication means. 2.5.2 IEEE 802.11p based technology IEEE is working on a variation of 802.11 standards that would be applied to support communication between vehicles and the roadside, or, alternatively, among vehicles themselves, operating at speeds up to 200 km/h, handling communication ranges as high as 1,000 meters. PHY and MAC layers are based on IEEE 802.11a, shifted to the 5.9 GHz band (5.850-5.925 GHz within US). The technology is promoted by the car industry both in Europe and US. Estimated deployment cost is foreseen to be relatively low due to large production volumes. C. Combined wireless access one of the most significant and important efforts in combining those wireless access technologies is done by ISO TC 204 WG16. It builds on the top of IEEE 802.11p, using additional set of interface protocols. Currently supported standards include: Cellular Systems: GSM/GPRS (2/2.5G) and UMTS (3G), Infrared Communication and wireless systems in 60 GHz band. Using all those interfaces in a single, uniform system would result in incre ased flexibility and redundancy, thus improving applications performance. Apart from interoperability issues, CALM is also engaged in the standardization of the protocols, network layer and the management services. 2.6 WAVE Architecture WAVE system architecture is totally a set of WAVE standards that describes the communication stack of vehicular nodes and the physical air link between them. Any RSU may have two interfaces, one for the WAVE stack or architecture or wireless networks and the other for external interfaces like wired line Ethernet that may be used to get access to internet and for connection to internet it is mainly used. Similarly, each OBU may have two interfaces, one for the wireless WAVE stack and the other for sensor-connections and human interaction. OBU is not full-duplex so, therefore, it cannot transmit messages simultaneously, so DSRC is half-duplex. The RSU and OBU can send messages only when the channel becomes idle and also confirmed that it is idle. If the channel is busy, RSU and OBU need to wait and if the channel is idle then RSU or OBU will send the signal Request to Send (RTS) to control channel. The control channel will allocate the channel on the basis of high priority first followed by low priority. The high priority messages are those messages related to public safety. The WAVE architecture is defined by the IEEE 1609 family of standards and uses the IEEE 802.11p amendment to extend the use of 802.11 to vehicles. The IEEE 1609 family is composed of four standards describing the resource manager, security services, networking services and multi- channel operations. WAVE standard consists of five complementary parts 802.11p â€Å"Wireless Access in Vehicular Environments (WAVE)† [8] which is an amendment to the well known IEEE 802.11 Wireless LAN Standard and covers the physical layer of the system. 1609.1 â€Å"Resource Manager† [8] that covers optional recommendations for the application layer. [13], [14] 1609.2 â€Å"Security Services for Applications and Management Messages† [8] that covers security, secure message formatting, processing and exchange. [13], [14] 1609.3 Networking Services† [8] that covers the WAVE communication stack. [13], [14] 1609.4 â€Å"Multi-Channel Operation† [8] that covers the arrangement of multiple channels and how they should be used. [13], [14] The most evident part is its dual stack. Whereas there is a well-known stack, called TCP/IP stacks and on the other hand there is a stack, called WAVE Short Message stack. The function of the WAVE Short Message stack is to provide a connectionless transport protocol i.e. without checking the connection that whether connection is made or not, similar to UDP but on a single-hop basis. The safety applications are supposed to use this stack only while non-safety applications can use both. It should be noted that the devise or design of this approach is focused on non-safety applications and considers safety as a black box. 2.6.1 IEEE 1609.1 Resource Manager The IEEE 1609.1 standard defines the architecture and data flows of WAVE. It also describes command messages and data formats. [9], [8]. The standard explains how data communication between road side units and vehicle on board units occurs. The discussion of this standards operation will be based on the standard defines applications residing on the on board unit as Resource Command Processors and those residing in road side units or elsewhere as Resource Manager Applications. The Resource Manager is the focus of this standard and is also the application that is responsible for managing communication between multiple Resource Manager Applications and Resource Command Processors. [9], [8] WAVE communication imitates a client-server architecture that is managed by the Resource Manager. For example, in the case where a company wants to provide traffic updates by analyzing vehicle speed statistics in a stretch of highway, the application that analyzes the traffic data (a Resource Manager Application) would reside on the road side unit or a remote server that is connected to a road side unit. When the Resource Manager Application sends a request for the speed of the vehicle the Resource Manager application in the road side unit receives the request then forwards it to the vehicles Resource Command Processor application using WAVE. The vehicle then replies to the Resource Manager which forwards the message to the Resource Manager Application. If another passing vehicle asks for traffic updates by sending a request to the road side unit, the roles of client and server from the previous case are switched. WAVE is designed to provide secure communications and minimize the cost of on board units by minimizing the amount of processing required by them. All only desired information relevant to road safety will be transferred. 2.6.2 IEEE 1609.2 Security Services The IEEE 1609.2 standard defines secure message formats and processing and infers circumstances for using secure message exchange. [13], [8]. It deals with security services for applications and management messages. Security is important in WAVE because vehicles transmit sensitive information that could constitute a violation of privacy if accessed by unauthorized parties. The efficacy and reliability of a system where information is gathered and shared among autonomous entities raises concerns about the authenticity of the received data. For example, a bad actor could misrepresent its observations in order to gain advantage (e.g. a vehicle V falsely reports that its desired road R is stopped with traffic, thereby encouraging others to avoid R and providing a less-congested trip for V on R). More malicious actors could impersonate other vehicles or road-side infrastructure in order to trigger safety hazards. Vehicles could reduce this threat by creating networks of trust, and ignorin g, or at least distrusting, information from un-trusted senders. [13], [8] A trusted communication generally requires two properties are met: The sender is conclusively identified as a trusted source. While in transit, the contents of the senders message are not tampered. WAVE maintains security by ensuring confidentiality and authenticity in message transmissions. The final standard is expected to address privacy issues with the current version. WAVE ensures confidentiality

Ruined Maid and To His Coy Mistress Essay -- Love Relationships Thomas

Ruined Maid and To His Coy Mistress Both the â€Å"Ruined Maid† and â€Å"To His Coy Mistress† provide us with disturbing images / pictures of love, sex and relationships as I am about to explain. The â€Å"Ruined Maid† was written by Thomas Hardy in 1866, during the time when women didn’t have sex before marriage and they were thrown out of their village for being â€Å"ruined†. The public at that point in history had a very strict view of sex and marriage. They thought that women in particular should never have sex before marriage and they should have everything taken off them for being â€Å"ruined†. They were looked upon as a disgrace to society. The â€Å"Ruined Maid† provides us with disturbing images and pictures of love and relationships because the poem is about a woman who has become â€Å"ruined† which means that she’s had sex before marriage. She’s turned the meaning of this into a good thing while most people thought that it was a bad thing because it meant that the woman had no self-respect and that they were looked upon as prostitutes in a sense. The poem starts with Melia and a...

Psle

Should PSLE be scrapped off? What is PSLE? The Primary School Leaving Examination (PSLE) is basically an examination taken by Primary 6 students before they go onto their Secondary School education. As different Secondary Schools have different cut-off points based on the previous intake, schools with higher cut-off points are usually regarded as the better ones. Naturally, parents would prefer their child to get into a better school, as they believe that these schools will offer their children a better education.Other than PSLE, there is also other ways a student can get into their desired Secondary School such as the Direct School Admission (DSA). Students who are able to choose the DSA approach are usually more sports or art inclined. The Ongoing Debate Recently, many Singaporeans have considered PSLE as the ‘do or die’ examination. The reason is because parents are feeling too much pressure on account of the PSLE. Many parents want their children to get into brand na me schools, causing them to feel stressed and worried. â€Å"People take secondary school admission so very seriously. If I don't get into that school, then my kid has no chance in life',† said Prime Minister Mr Lee Hsien Loong. Mr Lee also mentioned that ‘every school is a good school’ so that they can get the pressure off the parents. However, not every parent in Singapore is pressurized by the fact that his or her children may not be able to get into a good Secondary School. Housewife Sandy Lee, 40, said she enrolled her son Zong Wei in Townsville Primary as she felt that the principal and teachers cared for the pupils. She is also not too worried about her son's PSLE results.She said: â€Å"I don't want to pressure him too much, as long as he can get into a secondary school. † And with this in mind, there is an ongoing debate on whether the PSLE should be abolished as it is causing too much stress on Singaporean students and parents as well. One of the The Straits Times' current affairs website readers asked if Singapore could reduce the reliance on exams, and even do away with the PSLE. This emerged among the top 10 most pressing questions that people wanted the Prime Minister to answer, according to a week-long poll on the website that drew over 21,000 votes.The stress that comes with PSLE is something that needs to be looked at, but scrapping the exam or tweaking the assessment criteria may not be the solution, said Senior Minister of State Lawrence Wong. My Personal Experience I’ve taken PSLE in the year 2007 and I have to admit that PSLE was pretty stressful for me. Every day after school, I had to go for supplementary lessons conducted by teachers till 5 to 6pm every day and then head home for dinner before revising again. During the weekends, I had to attend tuition and there was no playtime for me.I did that continuously for 4 to 5 months before PSLE. My parents have always supported me throughout that period of ti me and were always cheering me on. They have never given me any stress. Instead, they asked me to set a goal for myself and to ask myself, â€Å"What do I want in life? † After knowing what I want in life, everything felt like it was worth it and after PSLE ended I had 2 months of holiday just purely relaxing and enjoying myself as I felt like I gave my best and had no regrets.So, should PSLE be scrapped off? My personal opinion In my opinion, I think that PSLE is a very good way of gauging a student’s learning pace. A school with a lower cut-off point doesn’t mean that it is a bad school; it’s just a school for students with a slower learning pace. The main problem with PSLE is the stress that it's causing for students and I believe that it is because many students are just like the me I was back then, learning what it feels like to be stressed for the first time.In life, everything has its first time and if a student is not able to deal with the stress from PSLE, he or she will never be able to deal with the stress in Secondary School. Hence, I strongly believe that PSLE should not be scrapped off. Conclusion Let the students taking PSLE work towards a goal set by themselves and not their parents. This way, students will drive themselves towards it. And after all of it, it’ll be worthwhile. Reference: Chia, S & Toh, K. (2012, September 22).Scrapping PSLE Not The Solution: Lawrence Wong. Ministry of Education, Singapore: Education in the News. Retrieved on November 18, 2012 from http://www. moe. gov. sg/media/news/2012/09/scrapping-psle-not-the-solutio. php Au Yong, J. (2012, 27 September). PSLE stays but needs relook: PM. The Straits Times. Retrieved November 18, 2012 from Factiva Database. Goh, C. L. (2012, 17 November). PSLE not the be-all and end-all: PM. The Straits Times. Retrieved November 18, 2012, from Factiva Database.

An editorial about the writings of Ida B. Wells Essay

Ida B. Wells wrote the three pamphlets â€Å"Southern Horrors† (1892), â€Å"A Red Record† (1895), and â€Å"Mob Rule in New Orleans† (1900) as an attempt to publicize the atrocities being committed against African Americans in the New South. These writings are important today, not because lynching of African Americans occurs with any regularity, but because they are accounts contemporary with the events they detail and because the pamphlets illustrate the dangers of: mob rule, justifying immoral acts by claiming to have a moral purpose, and the tendency of people everywhere to strike out against anything new or different with violence. This message is even more relevant today when the current president is so willing to suspend the rights of others so that the people of America can be â€Å"safe†. The fear of one group of people who mistrust another group should never result in suspension of rights of another. Just like the eroding of the rights of African Americans during the time when Wells was writing, the suspension of rights of people who look as if they are or might be terrorists in the current world is wrong and should not be tolerated. Ida B. Wells wrote with two purposes in mind: one was educational, the other was to publicize the atrocities committed in the New South with the hope of eliciting reaction from people who would then help bring an end to â€Å"Lynch Law† and other injustices committed against African Americans. Wells wanted to educate those people who were unfamiliar with the New South regarding the violence and double standards far to common in the South. Wells wrote to tell the facts about lynchings in the South so that people would no longer believe lynching was a response to an egregious crime. â€Å"She sought to recast lynching in the public eye so that it was not perceived as an understandable though unpleasant response to heinous acts, but as itself a crime against American values† (Wells 27). According to Wells the perception that all white women were pure and uninterested in have African Americans as husbands is untrue, â€Å"there are many white women in the Sought who would marry colored men if such an act would not place them at once beyond the pale of society and within the clutches of the law† (Wells 53). At the same time laws forbade African American men and white women from â€Å"commingling,† Wells points out â€Å"they leave the white man free to seduce all the colored girls he can† (Wells 53). Although Wells writing centers on lynching because of alleged rape she makes an important point when she cautions that â€Å"a concession of the right to lynch a man for any crime, . . . concedes the right to lynch any person for any crime, . . . † (Wells 61). Wells also wanted to call citizens of the North, government officials and people in Great Britain to act to end lynch law. She urged them â€Å"employ boycott, emigration and the press . . . to stamp out lynch law . . . † (Wells 72). Ida B. Wells wrote to three different audiences. To those people living in the New South Wells wrote not so much about horrific events that occurred, but about the justifications they used to excuse their behavior. As mentioned above, she wrote of the double standard between the races and of the potential danger of expanding lynching to suit the whims and fancies of any mob at any time. To those Americans living outside the South Wells wrote to shock them with the descriptions of the horrid events, to educate them about how African Americans were still being treated despite the Civil War and despite the Constitutional Amendments guaranteeing rights to African Americans. Wells writes to the people of the North to show them that all is not well in the South and that the advances made in the past were being pushed aside. In her first pamphlet, â€Å"Southern Horrors,† Wells wrote about the existing injustices and ongoing terrorist acts performed against African Americans. To the rest of the world, particularly Great Britain, Wells wrote â€Å"A Red Record† she â€Å"respectfully submitted [this pamphlet] to the Nineteenth Century civilization in ‘the Land of the Free and the Home of the Brave† (Wells title page). This pamphlet recounts the numbers and details of more than four hundred lynchings occurring in the United States against African Americans. Wells hoped to appeal to the sensibilities of British people who were potential investors in the South so they would invest elsewhere â€Å"the appeal to the white man’s pocket has ever been more effectual than all the appeals ever made to his conscience. † To those in power in the United States Wells wrote â€Å"Mob Rule in New Orleans† to those in power in hopes of their bringing to an end to authorities who allow, and at times encourage mobs to act. Although it is difficult to quantify what the actual affects of Wells’ writing were, it is clear that during the next century, the groups she wrote for did make great strides toward establishing equality and eliminating injustices based on race. It is not unreasonable to suggest that Wells’ writing had a hand in starting this process. Wells’ writings are certainly among the earliest of Post-reconstruction writing to reintroduce the difficulties of African American lives, but they were not the last. It is likely that her writing influenced and encouraged others to continue the work Wells began. As I read through the accounts of these horrible, disgusting lynchings I felt saddened and depressed. Clearly there were many injustices committed and many were people hurt, imprisoned, or killed. Some of these are particularly gruesome such as Chapter III of A Red Record, â€Å"Lynching Imbeciles: An Arkansas Butchery† where Henry Smith was tortured and burned at the stake (Wells 88-98). According to figures gathered by the NAACP (an organization with Wells as one of the founding members) there were 3,318 African Americans killed by lynching between 1892 and 1931. Certainly one cannot dismiss or excuse these egregious acts in any fashion. However I was not particularly surprised or shocked by these events. Perhaps it is because I live in a world where the Jewish Holocaust of World War II is well known, a world where a country, Cambodia, went mad, and slaughtered between 1. 5 and 3 million of 7 million its own citizens. Perhaps it is because I live in a world where the recent genocides in Rwanda and Somalia were largely unknown until made into a wide screen blockbuster movie. Perhaps it is because of the 9/11 attacks (coincidentally the number killed on 9/11 and the number of dead American soldiers in Iraq are remarkably similar to the 3300+ listed in the NAACP’s figures). For whatever reason, I find myself somewhat inured against these accounts. I am not sure whether this reveals more about me or about the society I live in, but I cannot help but wonder if Ida B. Wells were writing today would there be any impact at all.Perhaps not: more’s the pity. Works Cited Wells, Ida B. Southern Horrors and Other Writings: The Anti-Lynching Campaign of Ida B. Wells, 1892-1900. Ed. with intro Jacqueline Jones Royster. Boston: Bedford Books, 1997.

History of Depression essays

History of Depression essays HISTORY OF DEPRESSION: Depressive illness has been known since biblical times. The word depression comes from the Latin word deprimere (to press down). Thus it means feeling pressed down, sad or low. In the late Middle Ages, religious leaders believed depression was caused by posession of evil spirits. The German religious reformer Martin Luther wrote All heaviness of the mind and melancholy comes of the Devil. Through the years depression has been treated with such remedies as whipping, bloodletting, exorcism and soothing baths. By the 1960s, antidepressant medications were discovered that relieved depression by correcting chemical imbalances in the brain and because of that many scientists started to believe that depression was caused by neurochemical imbalances rather than psychological traumas. It has never been proven what really causes depression, the modern belief is in the combination of both causes. Until 1980s, psychiatrists did not believe that children and teenagers could suffer from depression. They thought that true depression can not exist before person develops idealized self-image (called the supergo), but tests and surveys have shown otherwise, that also strengthens the chemical theory DEPRESSED OR JUST FEELING SAD? It is very important to distinguish depression from normal state of feeling sad. Sad mood can be instantly relieved by something good or exciting happening while a truly depressed person could be given a free car of his/her choice and still feel sad. As you read above, depression means long and hopeless sadness. If depression grows untreated, sufferers feel more and more hopeless and helpless, they feel as there's no one or nothing that can help them to be happy again, they believe that things will only get worse, never better. In some really severe cases depressants find that any ordinary activity such as getting out of bed, eating or even talking requires enormous energy. Eventually, these individuals ha...

Chronic Renal Failure and Dialysis Essay Example | Topics and Well Written Essays - 250 words

Chronic Renal Failure and Dialysis - Essay Example It is a mechanical way of cleansing the blood as well as chemicals and balance body fluids when the kidneys are not in a position to carry out important functions. An access to the vascular system is required to carry out the blood-cleansing function of the kidneys through dialysis. A graft is usually the access of choice when a patient needing dialysis has small veins. Several health care providers are needed in the care of a patient undergoing insertion of a dialysis graft. A surgeon is needed to create the access using a synthetic tube that is implanted in the arm under the skin. A laboratory technician is also of importance in the care of such a patient to carry out blood tests so as to ensure the dialysis prescription is most favorable. Moreover, a nephrologist is needed to offer health education to the patient concerning the care of the access, side effects of dialysis. Patients with chronic kidney disease are frequently asymptomatic but they can have a history of passing no or small urine amounts, nausea and vomiting, shortness of breath, persistent fatigue, and loss of appetite. On physical examination, the key findings may include; swelling especially of the ankles, facial puffiness, anemia, pruritus, dry skin, loss of lean body mass, and muscle weakness. The above elements should be communicated to all health providers managing such a patient for effective care. In addition, kidney function tests should be carried out to check on how the kidneys are functioning and the effectiveness of the dialysis.

Galaxy budgeting system Research Paper Example | Topics and Well Written Essays - 250 words

Galaxy budgeting system - Research Paper Example hich then give periodic results regarding the resource requirements and usage by the different activities of the programs, which are then used as the basis for predicting the future budget requirements for programs and their subsequent activities (Dongsung, 97). The future budget is then informed by a comparison of the different programs and their resource consumption forming the basis for allocating future resources to such programs. Thus, the galaxy budgeting system does not only assess funding on the basis of terms only, but also on the basis of program comparison. The differentiating factor between the galaxy budgeting system and the other budgeting systems is that, the galaxy budgeting system employs the history of an organization, to determine its future resource allocation, while basing the allocations on the previous information and accomplishments (Dongsung, 103). This means that programs that make greater accomplishments have a higher chance of being allocated even more res ources, to enhance their further achievements. The advantage presented by the galaxy budgeting system is that; it safeguards against money wastage or confining of resources in the unproductive areas, since the system ensures the allocation of resources based on the productivity of the programs, thus steering the resource allocation in the right direction (Dongsung,