Robert Hooke and the Coil Spring

Robert Hooke and the Coil Spring Robert Hooke was perhaps the single greatest experimental scientist of the 17th century, responsible for developing a concept hundreds of years ago that would result in coil springs that are still used widely today. About Robert Hooke   Hooke actually considered himself a philosopher, not an inventor. Born in 1635 on England’s Isle of Wight, he studied classics in school, then went on to Oxford University where he worked as an assistant to Thomas Willis, a physician. Hooke became a member of the Royal Society and is credited with discovering cells.   Hooke was peering through a microscope one day in 1665 when he noticed pores or cells  in a piece of cork tree. He decided these were containers for the â€Å"noble juices† of the substance he was inspecting. He assumed at the time that these cells were unique to plants, not to all living matter, but he is nonetheless given credit for discovering them. The Coil Spring Hooke conceived of what would become known as â€Å"Hooke’s Law 13 years later in 1678. This premise explains the elasticity of solid bodies, a discovery which led to the development of tension increasing and decreasing in a spring coil. He observed that when an elastic body is subjected to stress, its dimension or shape changes in proportion to the applied stress over a range. On the basis of his experiments with springs, stretching wires and coils, Hooke stated a rule between extension and force which would become known as Hooke’s Law: Strain and the relative change in dimension is proportional to stress. If the stress applied to a body goes beyond a certain value known as the elastic limit, the body does not return to its original state once the stress is removed. Hookes law applies only in the region below the elastic limit. Algebraically, this rule has the following form: F kx. Hookes Law would eventually become the science behind coil springs.  He died in 1703, never having married or had children. Hooke’s Law Today Automobile suspension systems, playground toys, furniture and even retractable ballpoint pens employ springs these days. Most have an easily predicted behavior when force is applied. But someone had to take Hooke’s philosophy and put it to use before all these useful tools could be developed. R. Tradwell received the first patent for a coil spring in 1763 in Great Britain. Leaf springs were all the rage at the time, but they required significant maintenance, including regular oiling. The coil spring was much more efficient and  less squeaky.   It would be almost another hundred years before the first coil spring made of steel found its way into furniture: It was used in an armchair in 1857.

Chinese English and Chinglish - Definition and Examples

Chinese English and Chinglish s Speech or writing in English that shows the influence of Chinese language and culture. The terms Chinese English and China English  are often used interchangeably, though some scholars draw distinctions between them. The related term Chinglish, a blend of the words Chinese and English, tends to be used in a humorous or derogatory fashion to characterize English texts such as road signs and menus that have been translated literally and often imprecisely from the Chinese. Chinglish may also refer to the use of Chinese words in an English  conversation  or vice versa. Chinglish is sometimes characterized as an interlanguage. In Global English (2015), Jennifer Jenkins concludes that there are probably more Chinese speakers of English in the world than speakers of any other kind of English. Chinese English and China English With some 250 million Chinese people currently learning to speak English or already fluent, there will soon be more English speakers in China than in the entire British Commonwealth. . . .Since each Chinese ideogram can have many meanings and interpretations, translating Chinese ideas into English is, indeed, extremely difficult. Because of this, Chinese-English hybrid words [such as No noising for Quiet, please, and slippercrafty for treacherously icy road] are often viewed with amusement by the rest of the English-speaking world. Nevertheless, this abundance of new words and phrases, unlikely as it may seem, is one of the prime drivers of the globalization of the English language.(Paul J. J. Payack, A Million Words and Counting: How Global English Is Rewriting the World. Citadel, 2008)On a theoretical level, China English is distinguished systematically from Chinese English, Chinglish, Pidgin English, etc. China English is understood as a standardizing or standardized variety in us e in China, which reflects Chinese cultural norms and concepts. Chinese English refers to varieties of English used by Chinese learners (see Kirkpatrick and Xu 2002). Hu (2004: 27) puts China English at one end of a continuum where lowly Pidgin English or Chinglish is at the other. China English is a language which is as good a communicative tool as standard English, but one which has important Chinese characteristics.(Hans-Georg Wolf, Focus on English. Leipziger Universittsverlag, 2008) Examples of Chinglish Speaking both English and Chinese in ones sentences.Example of a sentence in chinglish: At K-mart, I buy hen duo clothes.(A. Peckham, Mo Urban Dictionary. Andrews McMeel, 2007)Fortified by an army of 600 volunteers and a politburo of adroit English speakers, the [Shanghai Commission for the Management of Language Use] has fixed more than 10,000 public signs (farewell Teliot and urine district), rewritten English-language historical placards and helped hundreds of restaurants recast offerings. . . .But while the war on mangled English may be considered a signature achievement of government officials, aficionados of what is known as Chinglish are wringing their hands in despair. . . .Oliver Lutz Radtke, a former German radio reporter who may well be the world’s foremost authority on Chinglish, said he believed that China should embrace the fanciful melding of English and Chinese as the hallmark of a dynamic, living language. As he sees it, Chinglish is an endangered species that deserves preservation.(Andrew Jacobs, Shanghai Is Trying to Untangle the Mangled English of Chinglish. The New York Times, May 2, 2010)

Lab7 Essay Example | Topics and Well Written Essays - 750 words

Lab7 - Essay Example Just as original Image A, Image C looks similar to Image C1 after the logarithmic transformation. Above are images (1) original, (2) the transformed image of (1) and (3) is the reverse transformation of image (2). The original image (1) demonstrates the Fourier transmutation. The reverse image is available to reconstruct the original image which is a replica in the pixels and luminance. The reconstruction of the original image can be done through inverse Fourier transformation as depicted in image (3). The transformation of the original image (2) has high frequency in the center image hence it is viewed as a dot. (Sandra A, 2012) Image (i) is a circle image due to incoherent noise and its respective transformation image (ii). Image (i) indicates a random and even noise spread all over while image (ii) depicts a partial noise removal from the filtered image. Image (iii) is a circle with a coherent noise that is regular in the vertical direction. The image also has a sharp edge. It transformed image (iv) indicates inexistence of lines yet there appears wave-like circles around the dot to indicate existence of soft noise. The wave-like circles disappear when we move to the outside from the dot. This indicates lack on noise at the borders of the image. In comparison to the entire four images, (ii) appears sharper than (iv). Therefore, Fourier is able to separate the noise from image in a regular noise but remove just a few in a random noise. In the figures above, (1) is an ideal lowpass filter, (2) is the original circle through a filtered spectrum with incoherent noise and (3) is an inverse transformation of (2). The final image is made better than the original image through application of lowpass filter and production of low frequency through the filtered spectrum of original image. The final image shows more details and is brighter than image (1). Hence the lowpass filter is vital for noise removal from the image for

Research method Essay Example | Topics and Well Written Essays - 1000 words - 1

Research method - Essay Example The hypothesis of the study states that improved accuracy is observed when slight modifications are made to the original ARS scale. The revision of the anxiety scale makes it more precise and more relevant in communicating to the athletes, so that they can better express their level of stress, anxiety and self-confidence. The Anxiety Rating Scale ARS has been used frequently which led to its suggestion that some modifications might enhance the productivity regarding the concurrent validity of the instrument. Two revisions were made to the original ARS and its results were compared with the original ARS. The study used 180 college-age volleyball players for this study. The results indicated that the revision yielded the largest correlation with CSAI-2 subscales. The results were similar in the males where the revision 2 yielded the largest correlations connected with the cognitive and somatic anxiety, but not for self-confidence. Across genders the revision 2 resulted in the highest correlations for the three categories; cognitive anxiety, somatic anxiety and self-confidence. Correlation coefficients were found to be .67, .69 and .75 respectively. The conclusion suggests that the revision to the original ARS model resulted in the highest level of concurrent validity when the participants were intramur al volleyball players. The journal article discusses a very important topic; measuring the results of revised anxiety test. The article is complete in the sense that it begins with an introduction that goes on into explaining the background, then turns to methodology and then concludes with the results. It gives the reasons why there is room for improvement in the ARS. The ARS had been associated satisfactorily with Krane’s (1994) revision of Mental Readiness Form (MRF-L). Previous studies show that ARS is moderately correlated with anxiety and self-confidence subcomponents of CDAI-2 (Cox, Reed & Robb, 1997). The outline is clear and states that

Rise of Civilization in Mesoamerica and Andean South America Essay

Rise of Civilization in Mesoamerica and Andean South America - Essay Example Monuments with hieroglyphic texts were constructed and ceremonial centers had outstanding artistic developments. The Post Classic period extended from A.D. 950 to 1521, local governments were divided into branches for different purposes and directed towards commercial activities. Great houses with many and large rooms were constructed serving purposes of royal ceremonies and host to long distance alliances, each of these buildings had a sophisticated level of art and craft impressions. Traders and craftsmen were involved in the competition for entry into exclusive exchange networks that they sought the rarest and most exotic materials for their gifts. Smelting of gold, silver and copper was introduced in Central and South America. As pointed out by Gonzales, Merchants and Artisans only made up a small percentage of the Mesoamerican population but had a great impact that led to an extensive trading network (17). The Andean region of South America is also significant in the rise of ear ly intricate societies. The Andean people had their own distinct cultures different from other people in the world. Before invasion of Peru by Spain in 1532, western South America was inhabited by different High Mountain and desert coastal societies. These people had unique artistic and technological achievements which is the reason behind the name Andean Civilization by modern observers. South American territories were controlled by the Inca and were spread over Ecuador, Chile, Peru, Bolivia and Argentina; they were all part of a state called Tawantinsuyu which means the ‘Realm of the Four Parts’. The Inca began as a tribe in 1200 B.C., after defeating neighboring Andean tribes founded the Inca Empire. It was the most powerful civilization in South America. An existing... The Andean region of South America is also significant in the rise of early intricate societies. The Andean people had their own distinct cultures different from other people in the world. Before the invasion of Peru by Spain in 1532, western South America was inhabited by different High Mountain and desert coastal societies. These people had unique artistic and technological achievements which are the reason behind the name Andean Civilization by modern observers. South American territories were controlled by the Inca and were spread over Ecuador, Chile, Peru, Bolivia and Argentina; they were all part of a state called Tawantinsuyu which means the ‘Realm of the Four Parts’. The Inca began as a tribe in 1200 B.C., after defeating neighboring Andean tribes founded the Inca Empire. It was the most powerful civilization in South America. An existing indication of the social unity of the Andean people is the Quechua language which is still used by millions of people from North Ecuador and North Argentina. The Incas were great warriors and shrewd rulers. They exchanged gifts with neighboring tribes, intermarried and formed political alliances. Their populations were large in numbers and their administrative and economic systems were established in all their regions. Inca civilization had reached great feats in architecture; they constructed buildings with fine cut stones eliminating the need for mortar. They melted gold and silver and were in fact very famous for their gold.

The Threat Of Natural Disasters To Cambodia Environmental Sciences Essay

The Threat Of Natural Disasters To Cambodia Environmental Sciences Essay A Discussion on Building Resilient Communities, A Case Study of Cambodia. All through the 20th century, cities of the world have grown in size and importance, with an estimate of about half of all people living in urban areas and their numbers are expected to rise to at least 60 per cent by 2030 (UNHSP, 2002). Ironically, while cities are of vital importance as economic engines, hubs for transportation and communications, cultural centers and homes to the majority of the earths people, they are particularly vulnerable to natural and environmental hazard impacts. During the 1990s, losses from natural disasters were more than four times greater than during the 1950s, with more than 500,000 fatalities and over $1 trillion in damages (Walter, 2003). The existence of multifaceted and cascading hazards in Cambodia has occurred in time past causing large destructions. These hazards that occur are most times unavoidable but their impact could be reduced if the necessary circumstances are put in place. Managing natural and environmental hazards is essential because they pose significant threat to the human populace, carrying the potential to disrupt economic and social activities, cause substantial damage to property and even kill people. The best form of addressing such situations is to make the necessary investigations and preparations for emergency response when (before and after) these hazards occur. Basically, building resilient cities are an act of preparation for the inevitable natural hazards. Cambodia is located in the tropical zone, Southeast Asia, about 10-13 degrees north of the equator. Its climate is dominated by the annual monsoon cycle with its alternating wet and dry seasons, making it warm to hot throughout the year. It covers an area of about 181,035 square kilometres and is divided into 24 provinces as seen in figure 1. It is bordered to the North by Thailand and Laos, to the East and South by Vietnam, and to the South and Southwest by the Gulf of Thailand. Most of Cambodias land is relatively flat with vast tracts of land given over to rice production. Annual rainy season commences in July, with flooding occurring between September and December. During the monsoon season, Cambodia experiences flash floods usually after heavy rainfall. The provinces of Battambang, Kampong Chnang, Kampong Speu, Kampong Thom, Kampot, Kandal, Pursat and Rattanakiri are regularly hit by flash flooding. The second type of flood, the much slower but prolonged flooding, is caused by the overflow of Tonle Sap River and Mekong tributaries, inundating the provinces of Kampong Cham, Kratie, Kandal, Prey Veng, Stung Treng, Svay Rieng and Takeo. In 2000, Cambodia saw the worst flooding in recent history, with a total estimated damage of USD150 million. It affected more than three million people in 22 of the 24 provinces of the country, displacing 85,000 families and killing 182 (ECHO, 2008). Drought in Cambodia is characterized by loss of water sources caused by the early end or delays in expected seasonal rainfall. The traditional drought/lean season is between the months of August and November. Although not as severe as floods in terms of impact, it severely affects farming productivity especially among rice growing communities who rely solely on rain or river-fed irrigation. Low agricultural yield due to extended drought has increased indebtedness of families and contributed to widespread food shortages. The worst drought incident in 2002 had affected two million people and incurred a total damage of USD 38 million, (ECHO, 2008). No one can stop natural disasters. However, we can reduce the impact of natural disasters on the physical and the socio-economic losses in society. It is notable that victims of disasters mainly come from the least wealthy and influential; those in unsafe houses and engaged in more dangerous activities, who have limited options and entitlements. In any case, university students killed in school annual graduation or new born babies in health care facilities are especially disturbing aspects of the aftermath of disasters. Surely, these places should put safety issues first. Due to environmental degradation and human activities, natural hazards have been persistent. The Mekong flood in 2000 gave Cambodia the most terrible incident in the last 70 years, causing both socio-economic and physical damages. According to the official report of the National Committee for Disaster Management (NCDM) (2006), the floods affected about 3.4 million people with 347 fatalities, 80 percent of which were children. Moreover, schools and other infrastructures such as hospitals, houses, and pagodas were seriously damaged, with a total estimated loss of US$161 million. Again, floods hit Cambodia in 2001 and 2002, damaging approximately US$36 million and US$12 million respectively. In 2001, the floods killed 62 people while in 2002 the floods killed 26 (40 percent of whom were children), and many schools were destroyed. Figure 1.Map of Cambodia with Provinces cambodia-map-provinces.jpg Because many Cambodians depend upon subsistence agriculture for their source of revenue, they are particularly vulnerable to suffering hunger, poverty, or even the loss of life, when such disasters hit. This vulnerability has increased in recent years because of a series of almost consecutive annual disasters that have not allowed people the opportunity to recover from previous floods or droughts. The Royal Government of Cambodia and other stakeholders, including NGOs and the donor communities, have been increasing cooperation to allow for joint responses to the needs of the affected population when disasters strike. The overall goal is to ascertain and address the root causes of vulnerability to disasters. There is thus a need to identify and prioritize areas that are prone to natural disasters, and areas in which the population suffers most when disasters strike. Flood affected areas, rice dependency, and food security are considered when determining areas that should be prioritised for flood related interventions. The extent to which each an area is affected by flood waters, depends on rice production, and incapability to manufacture enough food to feed itself during flood years are taken together to classify areas into different levels of precedence. Two major types of flood were identified in Cambodia: Flash floods which result from heavy downpours upstream on the Mekong River which affect the provinces along the Mekong River and in the southern areas of the country. Central area floods are large floods that result from a combination of runoff from the Mekong and heavy rains around the Tonle Sap Lake. The waters affect the areas around the lake, but also flow heavily down the Tonle Sap River and the lower portion of the Mekong to flood the southern provinces. The first priority area is rigorously affected by any type of flood, the second a rea is only affected by the big central area floods, and the third area is only affected by flash flooding of the Mekong. These three priority areas are shown in figure 2. Figure 2: Flood Prone Communes image7_02.png The method applied to define areas vulnerable to drought is similar to that discussed ealier. The concern evaluate include: drought affected areas, rice dependency, and food security. Areas were defined as highly rice dependent if more than 80 percent of households are fully engaged in rice production. Food insecurity was measured as above for the drought year of 1998. Definitions for three levels of priority were again developed. First priority areas are defined as those with low precipitation and NDVI, high rice dependence, and food insecurity in 1998. These are areas where droughts are likely, and where they will have the most terrible consequences. Second priority areas have the same criteria as the first priority communes, but were not food insecure during the 1998 drought year. Third priority communes have low precipitation and NDVI, and are thus drought prone, but are neither highly rice dependent nor food insecure. The three levels of priority communes are presented in figure 3. Figure 3 Drought Prone Communes image7_03.png Vulnerability well-meant is the exposure and sensitivity to livelihood shocks and risks. Risks are the combination of the probability or frequency of occurrence of a defined hazard and the magnitude of the consequences. Natural hazards often cannot be prevented, and if they materialize, can generate a shock that affects households and communities in both predictable and unpredictable ways. Vulnerability is only to some extent determined by the type of hazard, while it is mainly determined by social systems and power (Wisner et al. 2006). The degree of vulnerability depends on the nature of the risk and a householdà ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬Ãƒ ¢Ã¢â‚¬Å¾Ã‚ ¢s resilience, or ability to recover after shocks. Vulnerability can be lessened by reducing exposure to risks of shocks that affect many people (e.g., frequent droughts) or shocks that affect individuals or households (e.g., the death of the household head) and increasing the householdà ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬Ãƒ ¢Ã¢â‚¬Å¾Ã‚ ¢s ability to manage sho cks. However, chronically food-insecure households often are not resilient to shocks and are continuously vulnerable. The government in Cambodia has initiated poverty reduction policies that attempts to reduce poverty, increase food security and thus reduce vulnerability of poor households. The concept of vulnerability links the relationship that people have with their environment to social forces and institutions and the cultural values that sustain or contest them. Vulnerability refers to the totality of relationships in a given social situation producing the formation of a condition that, in combination with environmental forces, produces a disaster. Disaster, risks and outcomes are socially produced at the intersection of a complex and dynamic range of hazard and vulnerability patterns, associated with underlying social, economic, territorial and political processes operating in specific locales. The concept of vulnerability links general political economic conditions to very particular environmental forces to understand how basic conditions such as poverty or racism produce susceptibilities to very specific environmental hazards. Vulnerability, thus, integrates not only political economic, but environmental forces, defined in terms of both biophysical and socially constructed risk. The working definition provided by Blaikie et al. is currently among the most utilized: By vulnerability we mean the characteristics of a person or group in terms of their capacity to anticipate, cope with, resist, and recover from the impact of a natural hazard. It involves a combination of factors that determine the degree to which someones life and livelihood is put at risk by a discrete and identifiable event in nature or in society(1994:9). The DIPECHO project was implemented in partnership with three local NGOs for the period of 15 months (from 15/02/2007 to 14/05/2008) in three operating provinces. The project activities centre of attention primarily is on the poorest and most excluded community members, identified as being particularly vulnerable to disaster, including women and children, poor farmers, fishery communities, landless people, ex-Khmer rouge soldiers, displaced people, wage labourers, people living with or at risk from HIV and AIDS, Vietnamese minority groups, and people with disability. The total number of direct beneficiaries identified through the project was recorded as 15153, (ActionAid International, 2006). The project aim is to build the capacity of community members and local authorities in 48 target villages in the project areas in the three provinces to better understand and prepare for recurring flood and drought by implementing the following strategies: Organise and build competence of the local community Create and strengthen institutional systems at the village and commune level Working in alliance with other actors and government on disaster risk reduction programmes Advocating on Disaster Risk Management (DRM) issues and influencing the concerned officials and institutions Capacity building of the existing institutions, communes and the various organs of the National committee on disaster management at commune, district, province level Conducting a detailed vulnerability analysis, developing village level disaster plans and formulating commune disaster risk management plans The following were the outcomes on the completion of the project: The capacity of Commune Committees for Disasters Management and Village Development Committees was enhanced to analyse their vulnerability and actively prepare their communities for the risks of flood and drought. Increased availability of Disaster Preparedness knowledge and skills across community members in target villages. Reduced vulnerability to disaster through small-scale disaster preparedness and mitigation initiatives carried out at the village community level. Formal structures and network of partnerships for community-based disaster risk management in Cambodia (CBDRM) comprise of an approach that builds upon existing capacities and coping systems of communities to jointly plan and apply appropriate and durable reduction and disaster preparedness plans. The strategy involves the participation of local actors, particularly vulnerable communities, who actively work to identify causes of vulnerability and actions to mitigate the impact of vulnerability from these natural disasters. Furthermore, the strategy aids communities towards long term capacity to adapt. With recurring drought and flooding and threats from other natural disasters in Cambodia, CBDRM is seen as a pacesetter in reducing massive loss of life, property and livelihood. The Cambodian government considers CBDRM as an essential part of its rural development program to alleviate poverty (ActionAid International, 2006). The major purpose of sustainable development is to generate and preserve flourishing ecological, social and economic systems. There exists an intimate link between these systems as humans can transform the ecological system and they also depend on it for food, wealth and security. Human actions can severely affect the ability of the ecosystem to perform its natural functions with adverse consequences for vulnerability, human life and security. Several case studies have helped shed more light on the connection between resilience, sustainability of social ecological systems and diversity (Berkes and Folke, 1998). Resilience basically refers to the degree of shock that concerned system can endure and stay within a given state. It can also be the degree to which the system concerned can organize itself or build capacity for learning and adaptation. It has been argued that two components of any given system affect its resilience, one being its adaptive capacity which is directly related to its heterogeneity and broadly equivalent t the diversity of its institutions and assets available in social systems. The second is its robustness and this refers to the properties of a given system that allow it accommodate disturbance without additional adaptation. Resilience and robustness refer to the capacity of the system to accommodate disturbance without losing functionality. Disaster management style or procedure can destroy or build resilience depending on how the community concerned organises itself in response to management actions. Building societal resilience requires understanding of ecosystems that incorporates knowledge of local users (Olsson and Folke, 2001). Structured Scenarios and active adaptive management have been recognized as fundamental to building resilience. Circumstances are used to envisage option future scenarios. Applying this action, resilience building strategies can be acknowledged and applied within the framework of sustainable development. The probability of sustainable development is improved by management for resilience in a dynamic world full of astonishments. Sustainable development is a pattern of resource use aimed at meeting human needs while preserving the environment so that these needs can be met not only in the present but also for future generations. It brings together the concern for carrying capacity of natural systems and social challenges faced by humanity. It is now clear that sustainable development that regard the impact of manà ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬Ãƒ ¢Ã¢â‚¬Å¾Ã‚ ¢s activities on the natural environment and attempts to reduce damage to the natural environment is the key to poverty reduction, environmental security and management and mitigation of weather and water related hazards. It basically targets resource poor and landless communities especially in the coastal regions because of population density, rapidly declining natural resources, work and income security and a high level of vulnerability to these hazards. With the understanding that environmental degradation can be tackled by knowledge and technological empowerment of the resource poor, illiterate rural man and women, the major aim of these programmes is to blend technological frontier with local knowledge in order to provide an integrated orientation to technological development and dissemination. As local communities confront the impacts of glacial melting, rainfall fluctuation, flooding and drought, they will need support to strengthen their capacity to withstand these changes and increase their resilience to the effects of a changing climate on international waters. Rivers, lakes and coastal ecosystems are increasingly being impacted by deforestation, land degradation, poor water management, and aquatic species loss as well as changes in fisheries habitats, water scarcity and floods or droughts precipitated or exacerbated by climate change, making communities more socially, economically and physically vulnerable. Local communities have shown, through ecosystem restoration, integrated water resources and coastal management and development that these activities can help communities associated with international waters increase their resilience to climatic variability and future effects of climate change. While in some cases it may be too early to gauge the adaptation success of local projects since it may entail preparing for future climate events and impacts, this publication provides some examples of how communities have successfully conserved their resources, restored their ecosystems, reduced their vulnerability and improved their livelihoods and increased their resilience to environmental threats and climate change in international waters. Resilient communities are far less vulnerable to hazards and disasters than less resilient places. For this assumption to be validated and useful, knowledge of how resilience is determined, measured, enhanced, maintained, and reduced is vital (Klein et al., 2003). It is not obvious what leads to resilience within coupled humanà ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬environment systems or what variables should be utilized to measure it. Because of the multidimensional nature of resilience and its different component parts, a broad model of resilience has yet to be empirically tested at the community level (Cumming et al., 2005). CONCLUSION The existence of a growing incidence in the occurrence of natural hazards can be accredited to a multifaceted world where increase in population is present. Vulnerability are ever-increasing in communities due to human activities. However, climate change and sea level rise may be accountable for augmented occurrence of some of these hazards. Globalization also spreads the cost of natural hazards going beyond the borders of the country directly affected. Technological and science based progress in our pursuit to understand natural hazards, applications and technological responses have clearly been insufficient. Response to disaster happen mostly after the event and so much is required to be put in place to sustain research and draw up programmes for risk assessment, recommend countermeasures, build and strengthen resilience in communities at risk. Researchers and disaster managers need to work hard to ensure vigorous knowledge takes a essential role in policy development. In this, loc al communities will be more resilient to natural and environmental hazards

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Death and the afterlife in ancient Egypt Death and the afterlife in ancient Egypt was considered to be one of the most important things to them at the time they had different methods of burial before mummification one of them was the sand in the blistering heat of the desert but after they started to believe that the body must stay in tact this what will be discussing in this essay. What Is Mummification? Mummification is the preservation of a body, either animal or human. Some mummies are preserved wet, some are frozen, and some are dried. It can be a natural process or it may be deliberately achieved. The Egyptian mummies were deliberately made by drying the body. By eliminating the moisture in the body, you have eliminated the source of decay. They dried the body by using a salt mixture called natron. Natron is a natural substance that is found in abundance along the Nile River. Natron is made up of four salts: sodium carbonate, sodium bicarbonate, sodium chloride, and sodium sulfate. The sodium carbonate works as a drying agent, drawing the water out of the body. At the same time the bicarbonate, when subjected to moisture, increases the pH that creates a hostile environment for bacteria. The Egyptian climate lent itself well to the mummification process, being both very hot and dry. Why Did The Ancient Egyptian's Mummify Their Dead? The Egyptians believed that there were six important aspects that made up a human being: the physical body, shadow, name, ka (spirit), ba (personality), and the akh (immortality). Each one of these elements played an important role in the well being of an individual. Each was necessary to achieve rebirth into the afterlife. With the exception of the akh, all these elements join a person at birth. A person's shadow was always present. A person could not exist with out a shadow, nor the shadow without the person. The shadow was represented as a small human figure painted completely black. A person's name was given to them at birth and would live for as long as that name was spoken. This is why efforts were made to protect the name. A cartouche (magical rope) was used to surround the name and protect it for eternity. The ka was a person's double. It is what we would call a spirit or a soul. The ka was created at the same time as the physical body.