Thursday, January 30, 2020

Risk Assessment Case Study Evaluation Essay Example for Free

Risk Assessment Case Study Evaluation Essay The risk assessment case study evaluates the chromium-contaminated soils. Twelve years of research went into the study to characterize the health hazards caused by the chromium-contaminated soils. Within New Jersey there were at least three different chromate chemical manufacturing companies operating, one in Kearny, New Jersey, and the other two in Jersey City. The study was conducted through a human health risk assessment, which contains four main steps; first identifying the hazard, second the dose response assessment, followed by the exposure assessment, and finalizing with the risk characterization. There are many short and long term health effects found within the risk assessment, which is one reason that assessment is so important. Looking at the risk assessment that was done within the area, the final implication was the simple fact that a remedial cleaning needed to be done within the area. It seems that there may have been a high cost for the study and the actual cleanup, but the benefit of saving an environment and human health is priceless. Risk assessment studies are very important to human and ecological health, therefore no matter the cost associated the benefit will always be much higher. Looking at the risk assessment of chromium-contaminated soils is important; it shows health effects related to chromium and what needs to be done to clean the area for further use by humans and nature. The case study includes a group of hazardous waste sites in Northern New Jersey. At these waste sites a series of unique research efforts were implemented over the past 12 years to improve the accuracy of the Risk Assessment process† (Paustenbach, 2002, p. 1). The case study specifically documents the use of applied research to advance the characterization of both exposure and toxicity associated with the uncontrolled release of hexavalent and trivalent chromium in the form of chromites ore processing residue (COPR) in an urban setting (Paustenbach, 2002). Early investigation began after redevelopment of certain neighborhoods i n downtown Jersey City led to the discovery of COPR. Research conducted by the task force revealed that construction companies and hauling firms had sued or sold the COPR to fill basements of demolished buildings, as base for parking lots and buildings, and/or to fill low – lying areas (Paustenbach, 2002). A total of 2,138 surfaces and subsurface soil samples, 31 groundwater samples from 31 monitoring wells at seven sites, 33 ambient air samples, 19 surface-water and 11 sediment samples, and eight building wall wipe samples were collected and analyzed during the remedial investigation that was conducted by Environmental Sciences and Engineering (ESE). As a result of the investigations conducted in the late 1980s it was clear that there was considerable uncertainty about how better to characterize the potential health risks associated with the COPR sites. â€Å"The human health risk assessment a development used to process the estimation, the nature, and the chance of an adverse health effects occurring in humans who may be exposed to chemicals contaminated with environmental media† (EPA, 2012, p. 1). The risk assessment can be categorized into four steps; the hazard identification, the dose-response assessment, the exposure assessment, and the risk characterization. The easiest to perform and the most recognizable, the first step is to identify the hazards. Hazard identification determines whether exposure to a hazardous agent could be a risk for the health of humans. The assessment also considers the exposure to animals and how the hazardous agent may affect or adversely affect the animals. The second step, the dose-response assessment is â€Å"the process of characterizing the relation between the dose of an agent administered or received and the incidence of an adverse health effect in exposed populations and estimating the incidence of the effect as a function of exposure to the agent† (Paustenbach, 2002, p. 1). Influencing issues are a variable in the second step, such as; age, gender, routines, the amount they are exposed, and the volume that they are exposed. A dose-response relationship describes how the possibility and severity of adverse health effects are related to the amount and condition of exposure to an agent† (EPA, 2012, p. 1). The third step is the exposure assessment. â€Å"Exposure assessment is the process wherein the intensity, frequency, and duration of human exposure to an agent are estimated† (Paustenbach, 2002, p. 1). Last, the final step is the risk characterization. The hazardous effect on health is labeled in the final pha se. By calculation and educated guesses, the incidence of a health effect under the various conditions of human or animal exposure described in the exposure assessment is defined. The community has not been significantly affected by the COPR – containing soils. â€Å"The property values have been kept intact and the businesses on affected properties have continued to operate† (Paustenbach, 2002, p. 1). When the COPR was ub the process of disposal, there was little or no concern for the environmental and human health risks that would occur as a result of the distribution of COPR outside the plant. The potentially exposed populations were defined by onsite and surrounding land use. â€Å"Exposures to chromium in COPR were assumed to occur via inhalation of suspended soil particulates, dermal contact with soil, and incidental soil ingestion† (Paustenbach, 2002, p. 1). The data from the site surveys were used in site-specific risk assessments to quantify exposures. Chapter nine verified that the there were 42 properties affect by the exposure and toxicity assessments (Paustenbach, 2002, p. 1). There were many samples taken. Between 1986 and 1989 â€Å"a total of 2,138 surface and subsurface soil samples, 31 groundwater samples from monitoring wells located at 7 sites, 33 ambient air samples, 19 surface-water and 11 sediment samples, and 8 building wall wipe samples were collected and analyzed during the RI† (Paustenbach, 2002, p. 1). Surface water and soil samples were also taken in the risk assessments. The assessments confirmed that there was indeed a problem and that a remedial was needed. The risk characterization showed that something needed to be done and remediation was needed for these current vacant lots. Results verified that the exposure and toxicity assessment had a high toxicity in the soil and carcinogenic that people were exposed to in the air, soil, and water. Evidenced proved that indoor dust was highly toxic and yielded a link between the dust and chromium levels. High levels of chromium were definite in all tests. The carcinogenic compounds of chromium were not proven in one, though, done on lab rats. The problem was passed around inside the company but was eventually managed and is still being handled today. The implications of these assessments have changed with every assessment done. Each assessment could test even more accurately. The final assessment was that there is a need to concentrated effort on the chromium left from these sites. Each step was precisely performed and accurately carried out. Limitations arose during the first step of identification. Again, the second step dose-response was limited by the research that had been done on chromium. As soon as they would file an assessment, there would be a new more accurate test available that would make the report inaccurate. The limitations and newly surfaced assessments left unanswered questions and concerns with the assessments. This 12-year period transformed a time of new developments in testing. With the availability of these new tests it brought the need for more assessments. The final assessments show that cleanup is needed and will require extensive planning to make it happen. The assessments were designed to discover the results of how much chromium was in the area. The effect on the health of humans and the environment was also correlated within the assessments. Over the 12-year period, the assessments were evaluated and fulfilled to their fullest potential. According to Paustenbach (2002), in Chapter 9, â€Å"the cost of the 12-year study equaled 10 million dollars in research† (Paustenbach, 2002, p. 1). Results can be seen in the undertaking of the removal of soil in these areas and taken to a hazardous material dump in Canada. By lowering the levels of chromium in these areas, like the wetlands, they have save a unique environment in America. According to the Njdep Site Remediation Program (2012) the cleanup in these areas are ongoing and the testing is being posted on this web site to show what the levels are in these areas (NJDEP, 2012). The people living and working in the particular areas will most benefit from the program. The people can stay in tuned with the daily operations, along with the level ratings, through the website. Although the study was lengthy, â€Å"the studies conducted have lowered the liabilities by almost 1 billion dollars† (Paustenbach, 2002, p. 1). The practical implications of the risk assessment were that there would have to be a remedial cleanup. â€Å"A review of chromium toxicology suggested that valence differentiation in the environment would be key to correctly calculating health-protective cleanup standards and maximizing the benefit of each dollar committed to remediation† (Paustenbach, 2002, p. 1). The specific goal approach was practical because it addressed the issues and came up with a plan of action. Many big companies do not have a plan of action and this hinders the process to be successful in the remediation process. Another reason for the practicality of the risk assessment was that they were able to budget for how much the remedial and the cleanup would cost. Many companies are unable to see have a plan of action at times like this and cannot for see the cleanup and the cost associated with it. A cost benefit analysis is important when looking at a risk assessment. The cost and benefit analysis reviews the cost and benefit or cleaning up an area. Most analytically reviewed references monetary gains and loses. Looking at the cost and benefits of both scenarios will help decide whether to clean the area or leave it alone. When looking at a CBA there are four different areas that must be looked at: first the gross disproportion, the sensitivity analysis, annualisation, and discounting. Gross disproportion is basically a factor when deciding if control measures should be used; if the costs are not grossly disproportionate from the benefits the control measures must be used. Sensitivity analysis is taking one or more of the factors and varying them to see if the outcome would be any different, this is used to show that control measures will be unsuccessful or that all that can be done has been. Then the annualisation, when the costs are worked out year by year with the varying changes in money, is done by looking at the discounting numbers. Discounting is a deeper look into the different cost and benefits of each year, this looks at maintenance costs and other cost that may be incurred. The main problem with the CBA is that there are no set criteria for any of the sections, it is left up to those doing the CBA and those fighting the results must take it to court and the court decides. Have set criteria listed for each aspect will help clarify what needs to be done. A CBA can be very beneficial to the decision of what needs to be done, it just needs a little more work to be more concise. The importance in a risk analysis can be witnessed in the review and evaluation of the risk assessment. The risk assessment of the chromium-contaminated soils in New Jersey; the 12-year assessment proved many points. Such an extensive assessment demonstrated an area of strength and weakness within the risk assessment. The risk assessment is made up of four parts, first identifying the hazard, then looking at the dose response assessment; this is followed by the exposure assessment and the risk characterization. Within the risk assessment of the chromium-contaminated soils illustrated that there would be marked improvement with a remedial clean-up of the area. While it may not have been an easy decision, due to the fact, that the CBA has no set criteria. The risk analysis was conducted for 12 years to ensure human safety when living and working within the area; the 12 year study also helped form future risk analysis studies.

Wednesday, January 22, 2020

Indigenous Resistance :: essays papers

Indigenous Resistance "MUSIC IS THE WEAPON OF THE FUTURE" The spirit of resistance is a powerful force in reggae music. In this essay I will explore the ways that resistance is manifested in reggae music and describe examples of indigenous resistance in Jamaica and Mexico. A strong example of indigenous resistance can be found in the Maroon communities of Jamaica. The Maroons were a thorn in the sides of white plantation owners and an inspiration and expression of freedom and autonomy to the Africans. The history of the Maroons describes a group of diverse people who bonded together beyond the fringes of the colonial system to form their own autonomous nation. Throughout the world indigenous peoples have been resisting and rebelling against the colonial system, also known as the 'Babylon' system to Rastafarians, modern-day descendants of the Maroons. The origins of the concept of 'Babylon' in relation to rastafarianism and indigenous resistance will be discussed in greater detail. The following essay is an exploration of indigenous resistance in Jamaica and throughout the world. Reggae music has evolved as a form of social commentary and because of its international popularity the message is spread around the world. Reggae music is a meaningful channel for social change. Reggae music portrays resistance to oppression, it is a symbolic action, part of a nonviolent revolution. It is a type of rhetoric; a method of communication designed to influence and persuade. It is a message with a purpose, it represents a crystallization of fundamental issues. Reggae music asks the listener to reconsider our daily lives and to hear the cry of the sufferer, because so many people are suffering. The lyrics and music of Robert Nesta Marley gave reggae music international recognition. Bob was a charismatic performer who truly stands out as a prophet. There is clearly a prophetic overtone to his lyrics yet he was only given the prophetic status after he died. His lyrics operate on a deep level, yet they typically relate to everyday occurrences. Bob's music was and is a powerful force to ease the pain of life in the ghetto. He embodied a feeling of empowerment, and encourages all listeners to 'chant down Babylon'. Marcus Mosiah Garvey was a philosopher who inspired Rastafarians to resist against the colonial system. He likened the Africans in the Caribbean and Americas to the Jews in the biblical city of Babylon. There are many deep connections between Rastafarianism and Judiasm, and this topic could no doubt warrent much more discussion.

Monday, January 13, 2020

Communication cycle Essay

Human spoken and pictorial languages can be described as a system of symbols (sometimes known as lexemes) and the grammars (rules) by which the symbols are manipulated. The word â€Å"language† also refers to common properties of languages. Language learning normally occurs most intensively during human childhood. Most of the thousands of human languages use patterns of sound or gesture for symbols which enable communication with others around them. Languages seem to share certain properties although many of these include exceptions. There is no defined line between a language and a dialect. Constructed languages such as Esperanto, programming languages, and various mathematical formalisms are not necessarily restricted to the properties shared by human languages. Communication is the flow or exchange of information within people or a group of people. A variety of verbal and non-verbal means of communicating exists such as body language, eye contact, sign language, haptic communication, chronemics, and media content such as pictures, graphics, sound, and writing. Convention on the Rights of Persons with Disabilities also defines the communication to include the display of text, Braille, tactile communication, large print, accessible multimedia, as well as written and plain language, human-reader, augmentative and alternative modes, means and formats of communication, including accessible information and communication technology.[3] Feedback is critical to effective communication between participants. Nonverbal communication[edit source | editbeta] Main article: Nonverbal communication Nonverbal communication describes the process of conveying meaning in the form of non-word messages. Some forms of non verbal communication include chronemics, haptics, gesture, body language or posture, facial expression and eye contact, object communication such as clothing, hairstyles, architecture, symbols, infographics, and tone of voice, as well as through an aggregate of the above. Speech also contains nonverbal elements known as paralanguage. These include voice lesson quality, emotion and speaking style as well as prosodic features such as rhythm, intonation and stress. Research has shown that up to 55% of spoken communication may occur through non verbal facial expressions, and a further 38% through paralanguage.[4] Likewise, written texts include nonverbal elements such as handwriting  style, spatial arrangement of words and the use of emoticons to convey emotional expressions in pictorial form. Oral communication[edit source | editbeta] Oral communication, while primarily referring to spoken verbal communication, can also employ visual aids and non-verbal elements to support the conveyance of meaning. Oral communication includes speeches, presentations, discussions, and aspects of interpersonal communication. As a type of face-to-face communication, body language and choice tonality play a significant role, and may have a greater impact upon the listener than informational content. This type of communication also garners immediate feedback. Business communication[edit source | editbeta] Main article: Business communication A business can flourish only when all objectives of the organization are achieved effectively. For efficiency in an organization, all the people of the organization must be able to convey their message properly.[citation needed] Written communication and its historical development[edit source | editbeta] Over time the forms of and ideas about communication have evolved through the continuing progression of technology. Advances include communications psychology and media psychology, an emerging field of study. The progression of written communication can be divided into three revolutionary stages called â€Å"Information Communication Revolutions†.[5] During the first stage, written communication first emerged through the use of pictographs. The pictograms were made in stone, hence written communication was not yet mobile. During the second stage, writing began to appear on paper, papyrus, clay, wax, etc. with common alphabets. The third stage is characterized by the transfer of information through controlled waves of electromagnetic radiation (i.e., radio, microwave, infrared) and other electronic signals. Communication is thus a process by which meaning is assigned and conveyed in an attempt to create shared understanding. This process, which requires a vast repertoire of skills in interpersonal processing, listening, observing,  speaking, questioning, analyzing, gestures, and evaluating enables collaboration and cooperation.[6] Misunderstandings can be anticipated and solved through formulations, questions and answers, paraphrasing, examples, and stories of strategic talk. Written communication can be clarified by planning follow-up talks on critical written communication as part of the every-day way of doing business. A few minutes spent talking in the present will save valuable time later by avoiding misunderstandings in advance. A frequent method for this purpose is reiterating what one heard in one’s own words and asking the other person if that really was what was meant.[7] Effective communication[edit source | editbeta] Effective communication occurs when a desired effect is the result of intentional or unintentional information sharing, which is interpreted between multiple entities and acted on in a desired way. This effect also ensures the message is not distorted during the communication process. Effective communication should generate the desired effect and maintain the effect, with the potential to increase the effect of the message. Therefore, effective communication serves the purpose for which it was planned or designed. Possible purposes might be to elicit change, generate action, create understanding, inform or communicate a certain idea or point of view. When the desired effect is not achieved, factors such as barriers to communication are explored, with the intention being to discover how the communication has been ineffective. Barriers to effective human communication[edit source | editbeta] Barriers to effective communication can retard or distort the message and intention of the message being conveyed which may result in failure of the communication process or an effect that is undesirable. These include filtering, selective perception, information overload, emotions, language, silence, communication apprehension, gender differences and political correctness [8] This also includes a lack of expressing â€Å"knowledge-appropriate† communication, which occurs when a person uses ambiguous or complex legal words, medical jargon, or descriptions of a situation or environment that is not understood by the recipient. Physical barriers[edit source | editbeta] Physical barriers are often due to the nature of the environment. An example  of this is the natural barrier which exists if staff are located in different buildings or on different sites. Likewise, poor or outdated equipment, particularly the failure of management to introduce new technology, may also cause problems. Staff shortages are another factor which frequently causes communication difficulties for an organization. While distractions like background noise, poor lighting or an environment which is too hot or cold can all affect people’s morale and concentration, which in turn interfere with effective communication.4444 System design[edit source | editbeta] System design faults refer to problems with the structures or systems in place in an organization. Examples might include an organizational structure which is unclear and therefore makes it confusing to know whom to communicate with. Other examples could be inefficient or inappropriate information systems, a lack of supervision or training, and a lack of clarity in roles and responsibilities which can lead to staff being uncertain about what is expected of them. Attitudinal barriers[edit source | editbeta] Attitudinal barriers come about as a result of problems with staff in an organization. These may be brought about, for example, by such factors as poor management, lack of consultation with employees, personality conflicts which can result in people delaying or refusing to communicate, the personal attitudes of individual employees which may be due to lack of motivation or dissatisfaction at work, brought about by insufficient training to enable them to carry out particular tasks, or just resistance to change due to entrenched attitudes and ideas, it may be as a result delay in payment at the end of the month. Ambiguity of words/phrases[edit source | editbeta] Words sounding the same but having different meaning can convey a different meaning altogether. Hence the communicator must ensure that the receiver receives the same meaning. It is better if such words are avoided by using alternatives whenever possible. Individual linguistic ability[edit source | editbeta] The use of jargon, difficult or inappropriate words in communication can prevent the recipients from understanding the message. Poorly explained or misunderstood messages can also result in confusion. However, research in communication has shown that confusion can lend legitimacy to research when persuasion fails.[9][10][11] Physiological barriers[edit source | editbeta] These may result from individuals’ personal discomfort, caused—for example—by ill health, poor eyesight or hearing difficulties. Presentation of information[edit source | editbeta] Presentation of information is important to aid understanding. Simply put, the communicator must consider the audience before making the presentation itself and in cases where it is not possible the presenter can at least try to simplify his/her vocabulary so that the majority can understand. Nonhuman communication[edit source | editbeta] See also: Biocommunication (science) and Interspecies communication Every information exchange between living organisms — i.e. transmission of signals that involve a living sender and receiver can be considered a form of communication; and even primitive creatures such as corals are competent to communicate. Nonhuman communication also include cell signaling, cellular communication, and chemical transmissions between primitive organisms like bacteria and within the plant and fungal kingdoms. Animal communication[edit source | editbeta] The broad field of animal communication encompasses most of the issues in ethology. Animal communication can be defined as any behavior of one animal that affects the current or future behavior of another animal. The study of animal communication, called zoo semiotics (distinguishable from anthroposemiotics, the study of human communication) has played an important part in the development of ethology, sociobiology, and the study of animal cognition. Animal communication, and indeed the understanding of the animal world in general, is a rapidly growing field, and even in the 21st century so far, a great share of prior understanding related to diverse fields such as personal symbolic name use, animal emotions, animal culture and learning, and even sexual conduct, long thought to be well understood, has been  revolutionized. Plants and fungi[edit source | editbeta] Communication is observed within the plant organism, i.e. within plant cells and between plant cells, between plants of the same or related species, and between plants and non-plant organisms, especially in the root zone. Plant roots communicate in parallel with rhizome bacteria, with fungi and with insects in the soil. These parallel sign-mediated interactions are governed by syntactic, pragmatic, and semantic rules, and are possible because of the decentralized â€Å"nervous system† of plants. The original meaning of the word â€Å"neuron† in Greek is â€Å"vegetable fiber† and recent research has shown that most of the microorganism plant communication processes are neuronal-like.[12] Plants also communicate via volatiles when exposed to herbivory attack behavior, thus warning neighboring plants. In parallel they produce other volatiles to attract parasites which attack these herbivores. In stress situations plants can overwrite the genomes they inherited from their parents and revert to that of their grand- or great-grandparents.[citation needed] Fungi communicate to coordinate and organize their growth and development such as the formation of Marcelia and fruiting bodies. Fungi communicate with their own and related species as well as with non fungal organisms in a great variety of symbiotic interactions, especially with bacteria, unicellular eukaryote, plants and insects through biochemicals of biotic origin. The biochemicals trigger the fungal organism to react in a specific manner, while if the same chemical molecules are not part of biotic messages, they do not trigger the fungal organism to react. This implies that fungal organisms can differentiate between molecules taking part in biotic messages and similar molecules being irrelevant in the situation. So far five different primary signalling molecules are known to coordinate different behavioral patterns such as filamentation, mating, growth, and pathogenicity. Behavioral coordination and production of signaling substances is achieved through interpretation processes that enables the organism to differ between self or non-self, a biotic indicator, biotic message from similar, related, or non-related species, and even filter out â€Å"noise†, i.e. similar molecules without biotic content.[13] Bacteria quorum sensing[edit source | editbeta] Communication is not a tool used only by humans, plants and animals, but it is also used by microorganisms like bacteria. The process is called quorum sensing. Through quorum sensing, bacteria are able to sense the density of cells, and regulate gene expression accordingly. This can be seen in both gram positive and gram negative bacteria. This was first observed by Fuqua et al. in marine microorganisms like V. harveyi and V. fischeri.[14] Communication cycle

Sunday, January 5, 2020

Race, Hegemony, and Cultural Participation - 1699 Words

Race, Hegemony, Cultural Participation Abstract There are many experiences and perspectives within a society and a culture. This paper will outline some of the experiences of African American women through American history. The paper connects sociological theories as a way to explain and contemplate hegemony, equality, and social relations. The paper analyzes two quotations from real and fictional characters that aptly circumscribe their experience in relation to White American hegemony. The paper concludes that theories such and Hegemony Theory, Functionalist Theory, and Feminist Nationalist Theory offer precise and practical insight to the experience and oppression of African American women. Keywords: sociology, feminism, African American, hegemony, race, culture, power, control, functionalism Race, Hegemony, Cultural Participation Part I Functionalist theory can be characterized in a number of ways. Functionalist theory is concerned with social inequality. Functionalist theory is further interested in social cohesion, interdependence, and the equilibrium of a society. Functionalist theory also contends that members of a society have social capital. Functionalist Theory is a sociological theory that inquires as to how and why society functions in the manner it does with specific attention to relationships among/within social institutions. Through interpretation and synthesis, this paper will pay particular focus to the objectives and expressions ofShow MoreRelatedRacism : A Long Way From The End Of Colonialism Essay1740 Words   |  7 PagesRacism Transition from Domination to Hegemony Historically, United States battle against racism has come a long way from the days of colonialism, slavery, racial hierarchies, racial demarcated reserves, strict policies and segregation. And yet, discrimination and inequality continue to persist in our society. 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