A Spatial Median Filter for Noise Removal in Digital Images Essay Example for Free

A Spatial Median Filter for Noise Removal in Digital Images Essay With each snap of a digital photograph, a signal is transmitted from photon sensor to a memory chip embedded inside a camera. Transmission technology is prone to a degree of error, and noise is added to each photograph. Signi? cant work has been done in both hardware and software to improve the signal-to-noise ratio in digital photography. In software, a smoothing ? lter is used to remove noise from an image. Each pixel is represented by three scalar values representing the red, green, and blue chromatic intensities. At each pixel studied, a smoothing ? lter takes into account the surrounding pixels to derive a more accurate version of this pixel. By taking neighboring pixels into consideration, extreme â€Å"noisy† pixels can be replaced. However, outlier pixels may represent uncorrupted ? ne details, which may be lost due to the smoothing process. This paper examines four common smoothing algorithms and introduces a new smoothing algorithm. These algorithms can be applied to one-dimensional as well as two-dimensional signals. Figure 1. Examples of common ? ltering approaches. (a) Original Image (b) Mean Filtering (c) Median Filtering (d) Root Signal of Median Filtering (e) Component wise Median Filtering (f) Vector Median Filtering. The simplest of these algorithms is the Mean Filter as de? ned in (1). The Mean Filter is a linear ? lter which uses a mask over each pixel in the signal. Each of the components of the pixels which fall under the mask are averaged together to form a single pixel. This new pixel is then used to replace the pixel in the signal studied. The Mean Filter is poor at maintaining edges within the image. 1 N ? xi N i=1 MEANFILT ER(x1 , , xN ) = (1) The use of the median in signal processing was ? rst introduced by J. W. Tukey [1]. When ? ltering using the Simple Median Filter, an original pixel and the resulting ? ltered pixel of the sample studied are sometimes the same pixel. A pixel that does not change due to ? ltering is known as the root of the mask. It can be shown that after suf? cient iterations of median ? ltering, every signal converges to a root signal [2]. The Component Median Filter, de? ned in (3), also relies on the statistical median concept. In the Simple Median Filter, each point in the signal is converted to a single magnitude. In the Component Median Filter each scalar component is treated independently. A ? lter mask is placed over a point in the signal. For each component of each point under the mask, a single median component is determined. These components are then combined to form a new point, which is then used to represent the point in the signal studied. When working with color images, however, this ? lter regularly outperforms the Simple Median Filter. When noise affects a point in a grayscale image, the result is called â€Å"salt and pepper† noise. In color images, this property of â€Å"salt and pepper† noise is typical of noise models where only one scalar value of a point is affected.

Effect Of Heavy Metals On The Environment Environmental Sciences Essay

Effect Of Heavy Metals On The Environment Environmental Sciences Essay Heavy metals are most abundant forms of pollution in Malaysia either in the forms of solid or liquid. With the vast industrialization and economic development in coastal region, heavy metals are continuing to be introduced to the estuarine and coastal environment which eventually end up into the river, runoffs and land based area (Yu et al., 2007). Metals diffuses into the aquatic environment will settle down and be incorporated into sediments together with organic matters, Fe/Mn oxides, sulfides, and clay (Wang and Chen, 2000). However, heavy metal mobility or availability in contaminated materials depends to large extent upon the different chemical and mineralogical forms that occurred (Song et al., 1999). Therefore, sediments seem to be an excellent medium in the assessment of the metals bound to the particulates. Nonetheless, sediments are known to act as a sink for heavy metals to be introduced into waters either from both natural and anthropogenic sources thus providing an exce llent proof of mans impact (Pempkowiase et al., 1999; Guevara et al., 2005). In addition, they may also act as traps for various types of pollutants including heavy metals (Poh and Mun, 1994). Indeed, changes in environmental conditions such as pH and redox potential should be monitored since it may results in remobilization of heavy metals. Unfortunately, due to the scarcity of information available to establish the heavy metal concentration in sediment using sequential extraction, no data is presented concerning the heavy metal pollution in the rivers except for one author Shazili et al., 2008 on Langat River Basin. Heavy metals element is particularly crucial because any slight changes in availability may cause these elements to become either toxic or deficient to plant (Krishnamurti et al., 1995). In fact, sequential extraction analysis is a technique which is used to investigate the geochemical partitioning of heavy metals amongst solid mineral and organic phases in sediment or other earth minerals (Howard and Vandenbrink, 1999). Sequential fractionation also frequently used in approaches to evaluate metals distribution into different chemical forms present in solid phases. Although direct methods provide an unambiguous identification of the heavy metal forms and ways why they occur, they might not be sufficiently sensitive where heavy metals occur at relatively low levels and they do not provide quantitative information on heavy metal mobility and availability (Song et al., 1999). However, sequential extraction approach is undoubtedly useful since few attempts have completed and few modification have been made based on Tessier et al., (1979); such as Silviera et al., (2006); Krishnamurti et al., (1995); Song et al., (1999); Forghani et al., (2009), Poh and Mun, (1994). 2.0 Problem Statement Langat river, Bernam River and Klang River basin is located in the state of Selangor in which known to be the most developing states in Malaysia other than Kuala Lumpur. All of these rivers are primarily important as water source not only limited to supplying water to consumer but also for other purposes such as aquaculture and agriculture activity, fishing, effluent discharge, irrigation and even sand mining. With the vast industrialization held in the river such as sand mining it generate the release of metal bound in sediment into the water promoting metals diffussion into the aquatic organisms and eventually ends up into humans body. Moreover, each metals poses their own threat to human, particularly Cadmium (Cd) are known for causing adverse health effects, once ingest into our body it will cause lung cancer moreover it seldom important as a cause of phytotoxicity in paddy field (Chaney, 2010). On the other hand, Zinc (Zn) is a deficient and phytotoxic element in sediment which causes abdominal pain to humans, the latter due to industrial contamination (Chaney, 2010). Copper (Cu) in sediments strongly adsorbs to clay minerals, iron and manganese oxides and organic material. In addition, it tends to remain in horizons that have a greater organic content whereas sandy sediment with low pH poses the greatest potential for Cu leaching. On contrary, lead (Pb) is considered to be one of the major environmental pollutants and has been incriminated as a cause of accidental poisoning in domestic animals more than any other substance. In a nutshell, these metals are emboldened to be analyses since this metal endured high toxicity in the environment thus poses high potential threat and risk to humans and living organisms. 3.0 Significance of Study This study is prominent since in Malaysia there is only few attempted study using sequential extraction as medium in determining the fate of metals in environment. Particularly, this study will be useful as a baseline data for goverment bodies to be more sensitive on the issues related to heavy metals. On the other hand, this study will provide a delineation on the sources of metals which contribute the most anthropogenically or naturally to the environment since the major contributor on the environment deteroriation is a non point source. Therefore, identifying the potential sources is crucial in maintaining the environment. Nonetheless, by conducting this study it ables to generate a profound understanding on the sources and parent materials of which heavy metals are highly introduce to the estuary. Thus, contribute to the discovery of metals strength and percentage of binding to organic or inorganic pollutants. Hence, providing an illustration on the status of pollution in the sel ected rivers based on screening of the forms of metals associated in the river. In addition, the attempted method will utter a method development in assesing the metal in the environment. This study is beneficiary especially by the Department of Irrigation on the overview of the river status thus able to mitigate a scheme on reducing the metal accumulation into the river by identifying the source of pollution. 4.0 Research Objective To ascertain the chemical and mineralogical forms of Pb, Cu, Cd and Zn in selected polluted river. To profile the metal speciation (Pb, Cd, Cu, Zn) in the sediment at selected polluted river in Selangor. To determine the heavy metals affinity for specific geochemical phases in the recently deposited sediments in the river. To identify the pollution sources and active component of heavy metals accumulate into the surficial sediment and its chemical behavior in the aquatic environment. 5.0 Literature Review A river is component of water cycle. Mostly rainfall on land will passes through a river on its way to the ocean and smaller side streams will joins the river forming a tributaries (DID, 2010). In Malaysia, the water within a river generally originates from precipitation through surface runoff, groundwater recharge (as seen at base flow conditions / during periods of lack of precipitation) and release of stored water in natural or man-made reservoirs, such as wetlands, ponds or lakes (DID, 2010). Therefore, the rainfall will generate the surface runoff and flows into the river. While the runoff will collect all the suspended particulates on the land surface into the river. This is why source of metal is very hard to trace since it is a non point sources elements which diffuse into the river Basin. Therefore, in this case sediments play an important role in identication of the metals since it acts as transport and storage of potentially hazardous metals (Yu et al., 2008). Bernam River is approximately about 3335 km2 and it forms a boundary between States of Perak in the north and Selangor in the south. The undulating hills of Bernam River merge into an undeveloped peat swamp area where the downstream of the peat swamp is a densely populated coastal strip along the Bernam River. Rice is cultivated in the lower areas ad- jacent to peat swamps and rubber, oil palm, coconuts and cocoa are cultivated in estates and smallholder schemes. Agrochemicals (fertilizers and herbicides) used on agricultural lands suggest a potential non-point source of pollution and toxicity affecting the aquatic ecosystems (Yap and Ong, 1990). Logging generates pollution through soil erosion, siltation and sedimentation in the streams. On the other hand, Langat River basin covered an area of 1300 km2 in the south of Kuala Lumpur and the length of Langat River is approximately about 120 km long (Sarmani, 1989). Langat river known as an important water source not only limited to sup plying water to consumer but also for other purposes such as recreation, fishing, effluent discharge, irrigation and even sand mining (Juahir, 2009). Whereas, Klang River is notable as a highly polluted river in Selangor which flows through Kuala Lumpur and suburban area of the densely populated and highly industrialized Klang Valley (Tan, 1995). The upper reaches of the Klang River serve as an important source of water supply to an estimated population of two million people in this region, together with its growing industrial activities (Tan, 1995). According to the Environmental Quality Report (Department of Environment, 2007), the Klang River is regarded as one of the rivers which have been seriously affected by pollution. Discharges of wastewater from industrial activities in the Klang River basin have also contributed to increasing levels of organic chemical pollutants in the waterways. However, metals in sediment comes in various forms of elements. Therefore, each metals may give beneficiary and may also cause a potential threat to human. Once consumable in our body it might cause a significant imbalance thus causing deformities and poor health (Birungi et al., 2008). Sediment are an important features in the river any activities occured related to sediment such deepen or mining may cause the release of heavy metals into the river. This is because heavy metals may enter into natural water and become a part of the water sediment system and their distribution processes are controlled by a dynamic set of physical-chemical interactions and equilibrium (Jain, 2003). Therefore, the metals may bind to the aquatic organisms. Since these river is an essential water source in the state of Selangor, any aquaculture activity held in the river may have a significant potential of heavy metals accumulate into the fish or prawns. On the other hand, the deposition of metals in sedi ments usually occurs through an interaction between sediment and water (Piron et al., 1990), whereby changes of metal contents of sediments and water depend on changes of water chemistry, such as, temperature, pH and solute concentration. That is why such study is prominent since metals interactions between bed sediment and water in aquatic environment play an important role on water quality and the fate and transport of metals. There are series of modification of sequential extraction technique have been made upon the suitability of the study. The recent modification are introduce by Silviera et al., 2006 which proposed to the studies specifically on the tropical soil. This method listed out seven fractionation steps which each illustrates the metal bound particulate in the sediments. The first three fractionation steps explains the geochemical condition of the sediment whereas the fourth to the seventh steps refers to the anthropogenic conditions. This method is an alternative way to determine the source of metals, because the anthropogenically sourced metals preferentially partition to the non-residual phase of the sediment while the residual phase generally reflects background geochemical conditions (Forghani et al., 2009). Moreover, this method were chosen since it selectively extracts metal bound by specific sediment fractions with minimal effect on the other sediment components (Silviera et al., 2006) . In addition, this method are an important tool for predicting the potential effects of environmental changes and land application of metals on the redistribution of chemical forms in tropical sediments (Silviera et al., 2006). 6.0 Research Methodology Sediment Sampling Thirty representative surficial sediments (0-20cm depth) will be taken from selected polluted river in Selangor from upstream to downstream of the river. Surface sediments samples will be collected in triplicates and homogenised in a zip lock polyethylene bags. The sampling will be conducted during low tide to enable the source of pollution from the mainland to be determined without the influence of input from seawater compared to sampling during high tide. Sediment samples will be collected using plastic scoops, Eckman Grab or core sampler and place into acid-washed double zip-lock polyethylene bag. All samples will be stored in cool box at 4 °C during transportation to the laboratory prior to analysis. Sampling preparation The laboratory apparatus are also acid washed and rinsed thoroughly first with distilled water to ensure any contaminants and traces of cleaning reagent were removed before the analysis. Pre-clean polycarbonate centrifuge tube with soaked overnight in 5 % (v/v) nitric acid rinsed with distilled water after 24 hours prior to analysis. It is performed in clean laboratory to minimize the potential risk of contamination. Laboratory Analysis Physicochemical parameters such as pH, redox potential, salinity and conductivity will be measured using the 1:2 ratio of sediment and double deionized water (DDW). In addition, cations exchange capacity (CEC) and loss on ignition (LOI) will also be determined in the study. Physicochemical Parameters The sediment physicochemical analyses will be determined by mixing 10 g of air dried sample ( Cation Exchange Capacity (CEC) Sediment samples for CEC determination will be prepare in two 10 g portions, one for treatment with a 1 M NaCl solution and other with a 1 M NH4Cl solution. Approximately about 10 ml of 95% ethanol will be carefully poured on sediment sample and drawn through the sediment by suction. The ethanol remaining in the sediment will later be removed by overnight evaporation. Then, the sediment will be transferred to small 50 ml Polycarbonate centrifuge tubes. Hence, about 30 ml of 1M NaCl was applied to one set of sub samples and 1 M NH4Cl solution was added to other set. The centrifuge tubes contains with the sediment pre-treated with NaCl and NH4Cl then will be shaken end over end for about 10-20 minutes and subsequently centrifuged at 3000 rpm for 30 minutes in order to settle the fines. After the samples are centrifuged, the supernatant will be removed with syringe and filter through a 0.45  µm filter. About 15 ml of sample will be used for the analysis of Ca, Mg, and K from the NaCl supernatant solution and preserved with 1% 7M HNO3. Meanwhile, the solution from NH4Cl supernatant will be used for determination of Na and also preserved with 1% 7M HNO3. Sample analysis for Ca, Mg, Na and K adopted similar procedure as in the case of major cations determination. The exchangeable cation concentration are converted from meq/100g to equivalent fractions (ÃŽÂ ²T) as (Apello Postma, 2005) ÃŽÂ ²T = meqI-Xz_____ à ¢Ã‹â€ Ã¢â‚¬ËœI, Jà ¢Ã¢â€š ¬Ã‚ ¦.. meqI-Xz Where I, J,à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦. are exchangeable cations, meqI-Xi is normally given in meq/100 g dry sediment and à ¢Ã‹â€ Ã¢â‚¬Ëœ meqI-Xz is essential equal to CEC, ignoring minor amounts of Fe, Mn, etc. Loss of Ignition (LOI) Dry a sample in an oven at 105 °C to constant weight. Accurately weigh 1g of this dried sample and pour into a preweighed dry crucible. Optionally, a few drops of H2O2 may be added at this stage to promote oxidation. The samples will be transfered into muffle furnace and gradually increase the temperature to 500 °C. Leave inside the oven at this temperature for at least 4h or overnight if convenient. Cool, transfer to a dessicator and allow it to cool to room temperature. Weigh and calculate loss on ignition in % as: LOI (%) = 100 x (M1 M2) M1 Where M1 is the initial weight (g) and M2 is the weight after ignition (g). Sequential Extraction Procedure The methods that will be used in this study are based on modification methods from (Silviera et al., 2006). The fractionation of heavy metals in sediments will be carried out in triplicate, using 1 g of air-dried sediment. Then, sediment samples will be placed in 50 ml polycarbonate centrifuge tubes, mixed in a stepwise fashion with various reagents as shown in figure 1, and the suspensions equilibrated. By following equilibration, the solution and solid phases will then be separated by centrifugation at 1225 g for 10 min. In between each successive extraction, the solid residues are suspended in 5 ml of 0.1 M NaCl, shaken by hand, and centrifuged to displace extracting solution remaining from the previous step. The supernatant will be added to the former extractant. The steps are intended to reduce sample dispersion and to minimize read sorption of the metal. The supernatants will be filtered through a 0.45  µm membrane, and the solid residues are preserved for the subsequent extr actions. The concentrations of Cu, Zn, Pb and Cd in the various extracts will be determined by Inductive Couple Plasma-Mass Spectrometry (ICP-MS). Mass balances, calculated by summing individual Pb, Cd, Cu and Zn masses recovered from fractions, were compared with the independently determined total metal masses. Data Analysis Further data analysis will be conducted using the raw data obtained from the sample analysis. Descriptive analysis, cluster analysis, factor Analysis will be conducted using few softwares such as SPSS version 17 and Multivariate Statistical Package (MVSP) and AQUACHEM. Enrichment factors (EF) will be calculated to determine the level of trace metal contamination of the sediments. 7.0 Project Benefit Research Publications 2 research journal with impact factor Output expected from the project It is expected that several publication can be produced from the data obtained in this study which useful as a reference for future research. It will provide the latest information on the level of metal pollution in Selangor which useable for relevant authority to make the future planning and management purposes. Economic contribution of the project By using the information gathered in this research, the relevant government bodies can make better planning and take preventive measures to avoid further contamination of the river as it is crucial source for the nation fisheries and aquaculture activity. Moreover, important because a lot of the population which resides near the mangrove area depend on it for their livelihood. Since, the destruction or contamination of this area will affect their source of income. The reduction in fisheries produce from the mangrove area due to metal pollution will results in higher imports of fish products which in turn increase the outflow of money from the country. 8.0 References Apello, C.A.J Postma, D. 2005. Geochemistry, groundwater and pollution. 2nd edition. Roterdam: Balkema. Birungi, Z., Masola, B., Zaranyika, M. F., Naigaga, I. and Marshall, B. (2008). Active biomonitoring of trace heavy metals using fish (Oreochromis niloticus) as bioindicator species:the case of Nakivubo wetland along lake victoria. Chaney, R. L., 2010. Cadmium and Zinc. Trace Element in Soils. Wiley Publication. United Kingdom. Department of Environment, 2007. DOE Annual Report 2007. Retrieved from http://www.doe.gov.my/files/multimedia141/AR_JAS.pdf on 10 October 2010. DID, 2010. Department of Irrigation. River Management-Activities. Retrieved on 5 October 2010 at http://www.water.gov.my/index.php?option=com_contenttask= Forghani et al., 2009. Geochemistry and speciation of metals in sediments of the Maharlu Saline Lake, Shiraz, SW Iran. Environment Earth Science (2009) 59:173-184 Guevara et al., 2005. In Yu, R., Yuan, X., Zhao, Y., Hu, G., Tu, X., 2008. Heavy metal pollution in intertidal sediments from Quanzhou Bay, China. Journal of Environment Science 20, 664-669. Howard J. L., Vandenbrink W. J., 1999. Sequential extraction analysis of heavy metals in sediments of variable composition using nitrilotriacetic acid to counteract resorption. Jain, C. K., 2003. Metal fractionation study on bed sediments of River Yamuna, India. Water Research 38 (2004) 569-578 Juahir, H., Zain, S., Yusoff, M., Hanidza, T., Armi, A., Toriman, M. and Mokhtar, M., 2010. Spatial water quality assessment of Langat River Basin (Malaysia) using environmetric techniques. Environmental Monitoring and Assessment. Krishnamurti, G. S. R., Huang, P. M., Van Rees, K. C. J., Kozak, L. M. and Rostad, H. P. W., 1995. Speciation of particulate-bound Cadmium of Soils and its bioavailability. Analyst, 120.851. Pempkowiase J., Sikora A., Biernacka E., 1999. Speciation of heavy metals in marine sediments vs their accumulation by mussels. Chemosphere 1999:39(2):313-21. Piron, M., Pineau, A. and Mabele, R.M., 1990. Sediment, parameters and distribution of metals in fine sediments of the loire estuary. Water, Air, Amp; Soil Pollution 50(3), 267-277. Poh E. L., Mun Y. K., 1994. Determination and speciation of heavy metals in sediments of the Juru river, Penang, Malaysia. Environmental Monitoring Assessment 35:85-95, 1995. Sarmani, S., 1989. The determination of heavy metals in water, suspended materials and Sediments from Langat River, Malaysia. Hydrobiologia 176/177 : 233-238, 1989 . Shazili, N.A.M., Yunus, K., Ahmad, A.S., Abdullah, N. and Rashid, M.K.A., 2006. Heavy metal pollution status in the Malaysian aquatic environment. Aquatic Ecosystem Health Management 9(2), 137-145. Silviera, M. L., Alleoni, L. R. F., OConnor, G. A., Chang, A. C., 2006. Heavy metal sequential extraction methods A modification for tropical soils. Chemosphere 64 (2006) 1929-1938. Song, Y., Wilson, M.J., Moon, H.S., Bacon, J.R. and Bain, D.C., 1999. Chemical and mineralogical forms of lead, zinc and cadmium in particle size fractions of some wastes, sediments and soils in Korea. Applied Geochemistry 14(5), 621-633. Tan, G. H., (1995). Residue Levels of Phthalate Esters in Water and Sediment Samples from the Klang River Basin. Environment Contamination and Toxicology 54:171-1769 1995 Springer-Verlag New York Inc. Tessier, A., Campbell, P. G. C., Bisson, M., 1979. Sequential Extraction Procedure for the Speciation of Particulate Trace Metals. Analytical Chamistry, Vol 51, No 7, June 1979. US EPA, 1996. Method 3050B. Acid digestion of sediments, sludges and soils. Available from http://www.epa.gov/osw/hazard/testmethods/sw846/pdfs/3050b.pdf viewid=16Itemid=395 Yap, S.Y. and Ong, H.T. (1990) The effects of agrochemicals on an aquatic ecosystem: a case study from the Krian River basin, Malaysia. The Environmentalist 10(3), 189 ±202. Yu, R., Yuan, X., Zhao, Y., Hu, G., Tu, X., 2008. Heavy metal pollution in intertidal sediments from Quanzhou Bay, China. Journal of Environment Science 20, 664-669.

The emergence of sociology

The emergence of sociology What social forces were at work that led to the emergence of sociology in the late 18th and early 19th Century? Sociology can be defined as the study of societies and their development in terms of their political decisions, ethics, economic development, religion and laws. It consists of the organization of collections of human bodies into forms of social life. The end of the 18th century was marked by the French Revolution, the Enlightenment and the Industrial Revolution initiated in England. The purpose of this essay is to discuss these social forces in terms of their contribution towards the emergence of sociology. The three major factors which influence the emergence of sociology as a sphere of study began in the late eighteenth century with the French Revolution, the period known as the Enlightenment and the industrial revolution. Each one of these influences has contributed to what Karl Polanyi , the Austro-Hungarian philosopher termed the Great Transformation in his book of the same name, one of the results of this great transformation resulted in the emergence of the science of sociology. History began to change in 1789 when the French Revolution broke out followed by the Enlightenment the creation of a new framework of ideas about man, society and nature. In addition, further economic and social changes were brought forward with the industrial revolution firstly in England and then in the whole of Europe. The French revolution had lasted for ten whole years and was the first modern and ideological revolution of its kind. It had a great impact on society because it changed its structure. It managed to eliminate the social distinctions between people and the feudal society.The power shifted away from the Church and came to hands of the people. This was the first time people were seen as citizens. In addition to this, the clerical hierarchy which had existed until then gave up its rights and property. These changes had a historical, political and social impact in the entire of Europe and not just France.Plato and Aristotle had become exterminally manifest in the social and historical world as a consequence of the revolution in France. Additionally, the French Revolution brought significant changes to the family since it was followed by the Declaration of Human Rights which stated that all humans are born free and equal. Changes to family-related issues were also brought into force. At the same time the Church lost much of its tremendous influence and power, which devolved to the people. The clerical hierarchy that had existed until then gave up its rights and property. Civil marriage and divorce were established. Civil marriage was another way for people to project their doubts upon the Church. A couple blessed by God could now follow different paths in their lives with the divorce being established and accepted. Education and religion were also subject to changes.. The second major event, that took place during the late 18th and early 19th century, was Industrialisation. The Industrial Revolution began in England in 18th century (1870) and brought several changes in societies, shaping them in the form they are today. It was the major shift of technological, socioeconomic and cultural conditions in the late 18th and early 19th century that began in Britain and spread throughout the world (Wikipedia, Internet encyclopaedia). At the end of the 18th century the world was experiencing a rapid population growth which led to an economic boom. As the demand was increasing, more workers were needed to cover the increasing demand. Production of goods increased. This was a different type of work before Industrialisation people were working in a traditional forms. Technology brought significant changes in the work place which led to great improvement and efficiency. Machines were now helping people in production and thereby improving time efficiency and production volume as well as the conditions under which people worked. Technological changes included the use of iron and steel, new energy sources. These changes in technology improved both the quality of the products being produced as well as the work-conditions of the workers in production. Fewer efforts were now required by the workers in terms of producing a good. Technology also improved transportation and hence trade and commerce between countries. Markets expanded even more since goods and raw materials that were scarce in one country could be supplied from another. Machines became the symbols of the new society and humanity could be seen to be all working into this machine. In addition, the area of communication also saw great improvement during this time period and people could now travel easier and reach their destination quicker. In the past, the only method people could communicate between them was through letters. This way of communication however, was both time consuming and uncertain since the letters were often lost somewhere in between. Fortunately, during the late 18th and early 19th century letters could be delivered faster and new ways of communication were developed such as the telegraph. These improvements also brought people and societies closer to one another. People moved to the cities were the markets began to emerge. The Enlightenment was a significant contributing factor to the emergence of sociology in the late 18th and early 19th century. The Enlightenment is considered to be the source of critical ideas, such as the centrality freedom, democracy, and reason as primary values of society. It is the creation of a new framework of ideas about man, society and nature, which challenged existing conceptions rooted in a traditional world-view, dominated by Christianity (Hamilton,23). The Enlightenment was an intellectual movement consisting of many philosophers. The most popular figures of this new framework were Charles Montesquieu (1689-1755), Jacques Tugot (1729-1781) and Jean Condorcet (1743-1794). They managed to challenge the traditional and existing conceptions of the world. The thinkers of Enlightenment aimed to teach people stop listening and following blindly the churchs opinion and decisions, and start thinking on their own. Challenge what they hear and develop their critical judgment. People were now advised to try and solve their problems on their own rather than wait for God to provide a solution for them. This new way of thinking was a big factor in economic growth. The iincreased education, through the emergence of upper class philosophers, the publishing of newspapers and the emergence of new types of media resulted in the arts, such a writing and painting to only develop, improve and flourish during that time period. Reaching to a conclusion, the French Revolution, the Industrial Revolutionand the Enlightenment were the three major factors that contributed towards the emergence of sociology in the late 18th and early 19th century. During this historical period,peoples lives became much easier and better. All these changes helped people become more open minded and created for them a life with more choices. , This important turning point in history led to a technological and economic boom. It also resulted in people learning to live in societies. A person who cannot live in society, or does not need to because he is self-sufficient, is either a beast or a God. (Aristotle, Politics) Bibliography Lecture and Tutorial notes Wikipedia-online encyclopedia Internet the rise of sociology Morrison, K. 2006. Marx Durkheim Weber. Bilton, T. Bonnet, K. Jones, P. Lawson, T. Skinner, D. Stanworth, M. Webster, A. 2002. Introductory sociology, 4th edition. Palgrave Macmillan

History Of Physicians Assistant :: essays research papers fc

The year is 1959, and Mr. Scott has had a migraine headache for the past few weeks and so he drives to the local Potsdam Hospital. The poignant antiseptic smell fills his nostrils as he steps unto the polished hospital floor but what catches his eye is the large number of people waiting in the lounge. Mr. Scott patiently stands behind the long line of people to sign the needed forms to be seen by the physician. An hour and a half passes, and it is finally his turn to see the receptionist. He looks at the woman behind the counter in the bright white uniform and asks, â€Å"Is it always like this?† The woman replies in a weary but irritated tone â€Å"It was not this hectic until Dr. Johnson and Dr. Smith left to specialize in Syracuse.† As Mr. Jones fills out the questionnaire about his insurance, he mutters to him self, â€Å"Boy, they need to do something about this. They should hire more doctors or something." The medical community did do something to off set th e projected decline of physicians. About thirty years ago, a new health care profession was integrated into the medical field to assist physicians to prescreen and handle the routine patient loads. At first, Physician Assistants (PA’s) met some opposition, but later they were accepted as a need and an asset to society. The following history of the physician assistant will show how a crisis caused the development of this profession, and the conditions which created the profession and how the struggles of the PA profession during the 1960’s through the 1970’s ended with the maturity phase of the 1980’s and 1990’s. A crisis caused the development of the PA profession. This problem was the widely held belief that there was a shortage of medically trained personnel , which originated from the 1959 Report of the Surgeon General’s Consultant Group of Medical Education. This report gave three main reasons why an expansion of health care was needed in the United States: 1. There was fear of rapid population growth projections with disproportionate increases of the young and elderly. These two populations statistically and historically utilize more health care than the average populace. 2. There was an increased per capita use of health care facilities. This was spurred by numerous factors. The first was improved living standards that brought higher life expectancy and lower infant mortality.

Piagets Stages of Cognitive Development: The First Stage Essay

The first stage is called the Sensorimotor stage. It occupies the first two years of a child's life, from birth to 2 years old. It is called the Sensorimotor stage because in it children are occupied with sensing things and moving them. From these activities they learn what makes things happen, what the connections are between actions and their consequences. They learn to grasp and hold and what happens when they let go.   Ã‚  Ã‚  Ã‚  Ã‚  This happens later on in the stage. When they are new-born they have no concept of there being anything else apart from themselves in the world. In fact they think that they are the world. Piaget called this Egocentism; he said that children with this attitude were totally Egocentric. This does not mean that they are just plain selfish; it means that they do...

Engage in personal development in health, social care or children’s and young people’s setting Essay

My duties and responsibilities as a foster carer are many, i must have child A best interests at heart at all times, i provide a safe and stimulating environment for child A to develop to the best of her ability, to keep her safe from harm and abuse. I must make sure all her appointments e,g doctors dentist and language and speech are attended and up to date and recorded. That child A is taught about personal hygiene and why it is so important to do this daily , where ever she may be living. Be a positive role model for her, show her i am there for her to depend on and what i say i mean and do, help her with her school work giving positive praise for the smallest of tasks. To give her new experiences help her to develop her social skills, give her ways to show how she’s feeling, talk and listen to her about what’s going on, show her that her that she is important , that her views and feelings matter, keep her well informed of what’s happening on her behalf , doing all this and keeping confidentiality. For me to carry this out to the best of my ability i attend regular training for me to develop the skills i need , also attend meetings with appropriate people e,g social workers, key workers, guardians, teachers and any other professional that has an influence on child A’s life. I also attend a support group that has talks about different issues that may occur and a chance to talk to other foster carers and social workers about any concerns i may have in a confidential setting. I also keep records, daily logs which are kept locked away for confidential reasons, on how child A is doing, and her positive behaviour also any concerns I may have. I also take child A to contact on a few occasions during the week, having a positive relationship with the people child A sees is a positive experience for her. 1.2 This QCF is based on The National Occupational Standards that you are expected to meet in every unit. Explain the expectations about your own work role as expressed in relevant standards ie Code of Practice, National Minimum Standards, National Occupational Standards. Health and safety at work act 1974 all electrical equipment working correctly, all gas appliances safe to use, these are to be checked yearly by qualified people. No hazards that can cause slips trips or falls. That all hazardous substances are locked away. All outdoor areas are safe from harm. All vehicles that are used are road worthy. That household hygiene is paramount at all times. That pet are well behaved. That general safety is maintained at all times. Childrens act 2004 , every child matters :- 5 core outcomes, Be healthy:-promote physical, emotional, mental health. Stay safe :- keep them safe from maltreatment , neglect, violence and sexual exploitation , accidental injury and death, bullying and discrimination. Enjoy and achieve :- support leaning, attendance at school, stretching abilities. Make a positive contribution: – encourage making choices , being involved, promoting good behaviour. Achieve economic well-being :- encourage further education, better lifestyles. Care council for Wales, code of practise for social care workers :- As a foster carer i must protect the rights of child A promote her interests , gain her trust and build her confidence, promote her independence, but keeping her safe at all times. Respect her rights and choices as long as they cause no harm to herself or others. Be accountable for my work, take responsibility for my actions and maintain and improve child A’s knowledge and skills, do any relevant training for me to be able to carry out my role effectively. 2.1 Explain giving three reasons why reflective practice is important in continuously improving the quality of service provided I feel reflective practise is very important within my role as things change all the time, i have to be able to adapt to any given situation and deal with it at that time, by looking back at what you did, will help you to see if you could have dealt with the situation differently, if it occurs again or a similar situation. The environment, age and development, life experiences, training are all factors. Reflective practise helps to improve my quality of care, increases my confidence learning and through experiences, no-one is right all of the time. 2.3 Describe how your own values, belief systems and experiences may affect your working practise. As a adult i cannot remember being told â€Å"i love you† being hugged or any signs of affection being given, but i do know i was loved. I have brought into my family hugs whenever wanted or needed or just a hug for no reason, i tell my daughter and child A i love them every day, and i do. (if this is what the child wants). 4.1 Identify 3 sources of support available to you for planning and reviewing your own development. I receive support and encouragement from my QCF assessor, my key worker and the children i work with, within my role and family life.

Discuss The Dramatic Presentation of Justice and Morality Essay

The crucible written by Arthur Miller, in 1953 is set in the heart of puritan 16th century America. The main plot is about the witch hunts during that period and the lives that were affected by it. Although the play is about the witch hunts in Salem in the 16th century, the sub plot is really referring to the injustice that Miller himself was experiencing when he wrote it. In the play, it was not only acceptable practice in Salem to accuse people of witchery (usually women) but it was also acceptable to render them completely unable to defend themselves from such accusations. The society’s Puritanism, hysteria and conflicting views on morality and all that is just accounted for the horrendous tragedies to follow. Justice and morality are the main themes introduced throughout the play – justice, meaning the administration of law according to prescribed and accepted principles and morality, meaning the degree to which something is morally acceptable. Many issues associated with justice and morality such as the difficulties and dangers of conforming to strict principles including the consequences of the misuse of justice are also highlighted in the play. This essay will discuss those themes and how the audience is presented with them dramatically. ‘The Crucible’ meaning something in which substances are melted at high temperatures could be referring to a cauldron used by witches or an explosive situation. ‘The Crucible’ also means a severe test or trial which could be referring to the difficult decisions the characters had to make. The ambiguity of the title makes it difficult for the audience to fully understand and predict the nature and mood of the play outrightly. Throughout the play the audience is subtly presented with particular emotive issues. Miller used the literary device of an allegory to be able to depict them to maximum effect. He used lighting to convey emotions and tones, the same way he would a character. For example the footnotes of act one mention a candle in the room and sunrays beaming through the window giving the room â€Å"an air of clean spareness†. This could be interpreted as reflecting the way in which the puritans perceived themselves, free from corruption or impurities. Throughout the play, light was used to symbolize scenes depicting kindness, softer, more sincere emotions or highlight good characters in the play. But as the plot thickens, Miller uses less light which draws the audience towards the climax of the play. Dark lighting generally denotes bad atmosphere, for example the courtroom in Act Three is described as a â€Å"solemn, forbidding place† even though light shone through the back window. Again, at the very end of Act Four, when John Proctor is finally led away, Reverend Hale begins to pray and a light shines on his face. Again light is used to show raw emotions, and to portray both Proctor and Hale as good pious people. The language used throughout the play is archaic and biblical. Miller used biblical references throughout the play to help further illustrate and highlight the extent of Puritanism in Salem and how religion was the focal point of life in Salem. For example when Procter is pleading with Reverend Hale, he refers to him as ‘Pontious Pilate’ a roman official who found Jesus neither innocent nor guilty and washed his hands of the affair. However, it is more likely that Procter’s reference to the Bible was a subtle way of proving himself and his wife to be practicing Christians. Arthur Miller’s development of Abigail William’s character in ‘The Crucible’ greatly affects the plot of the play. Her snobbishness and perceived superiority made many people believe in her lies. Her superiority complex stems from the fact that she was an unmarried orphan, this placed her at the bottom of the social hierarchy in Salem. Her resentment of those that betrayed her influenced many of her decisions. From the very beginning of the play, it is clear to all that Abigail was a person who craved control, albeit subtly at times. Miller used the literary device of juxtaposition to show this to the audience. Juxtaposition is when two or more things are placed next to each other in order to create contrast and allow further analysis. In Act One, scene one where Reverend Parris is praying over Betty, Abigail appears to be an innocent, concerned niece â€Å"I will never hurt Betty, i love her dearly†. But as we see in the next scene, she threatens her own friends into silence. â€Å"Let either of you breathe a word, or the edge of a word about the other things, and i will come to you in the black of some terrible night and i will bring some pointy reckoning that will shudder you. And you know i can do it. † The â€Å"evil† that made her capable of drinking chicken’s blood made the girls fear her, so much so that when Procter asked Mary (his house helper) to tell the courts about Abigail she replied â€Å"she’ll kill me for saying that†. Juxtaposition was also used to show the different levels of morality between the characters. Throughout all the chaos of trying to find who is moral and who isn’t, the audience is fully aware that Abigail was behind it all and she is the person lacking in morals. This made it possible for the audience to make the contrast between her and the other members of the community. Again Abigail’s acted superiority complex revealed itself when Reverend Parris asked her why no-one in the village had rehired her, she replied by saying how they wanted to enslave her and how she would not â€Å"blacken her face for any of them†. This further illustrates her feelings towards the black slaves in the community. It was almost as if she was saying she would rather be without a job than lower herself to their level. It was this reasoning that made it so easy for her to use Tituba (Parris’ slave) as a scapegoat to take all the blame for the witchery. It was also easy for the rest of the villagers to believe Abigail’s accusations because they too thought themselves better than Tituba. An example of this is in Act One where Tituba takes a step backwards before attempting to talk to the reverend but he scrambles to his feet and quickly dismisses her.