Thursday, November 28, 2019

Examining The Concept Of Child Abuse Cases Social Work Essay Example

Examining The Concept Of Child Abuse Cases Social Work Essay This paper will look at kid maltreatment, what that is in Australia today. Through reexamining literature on kid maltreatment and kid protection this paper aims to demo that the construct of kid maltreatment is dependent on societal and cultural values. In order to discourse child maltreatment and its relationship to history and societal and cultural values it is of import to specify the term child maltreatment in the kid protection field in Australia today. Zuchowski ( 2009: 30 ) cites Fernandez as acknowledging that the importance of agreed and unambiguous definitions is cardinal to placing ill-treatment and appropriate intercessions and that kid maltreatment is a socially constructed construct defined by societal, cultural and economic conditions. In Australian kid protection work kid maltreatment is defined in footings of physical, sexual and emotional maltreatment and in the more combative country, kid disregard. Physical and emotional maltreatments are defined as Acts of the Apostless of committee or skip that cause injury or worse to kids. Sexual maltreatment is defined as the kid being used for the sexual satisfaction of the grownup and involves the maltreatment of trust and power inherent in relationships between grownups and kids. Neglect is defined as a state of affairs in which the parents/carers fail to supply for the basic indispensable demands that kids require ( Tilbury, Osmond, Wilson A ; Clark 2007:5 ; Tomison, 2001:48 ) . We will write a custom essay sample on Examining The Concept Of Child Abuse Cases Social Work specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Examining The Concept Of Child Abuse Cases Social Work specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Examining The Concept Of Child Abuse Cases Social Work specifically for you FOR ONLY $16.38 $13.9/page Hire Writer The term neglect is combative and implies opinion ; Feminism and Post-Modernist theories challenge workers to be critically brooding on the ways in which linguistic communication contributes to the building of societal values ( Healy, 2005:194 ) . Applied to child protection work Feminist, Structuralist and Critical societal work theories focus on societal and economic resources and acknowledge the impact that structural disadvantages have on households capacities to supply for kids ( Tilbury et al, 2007:29 ) . Disregard of kids was non recognized prior to the industrial revolution and kids every bit immature as five were treated as slave labor in orphanhoods, workhouses and mills, where they were starved, beaten and frequently kept in leg chainss ( Tomison, 2001:48 ) . These conditions are illegal in Australia today and would be considered as kid maltreatment by current societal values. History of Child Protection In the nineteenth century kids were basically seen as economic units, big households were an investing and kids s input was considered indispensable to household endurance ( Sanson A ; Wise, 2001:5 ) .By the bend of the twentieth century alterations in attitudes to child labors in Australia were reflected in Torahs such as the Factory Act of New South Wales and Victoria of 1896, mandatory instruction for all kids in all Australian provinces by 1900 and the constitution of voluntary kid deliverance groups such as The Victorian Society for the Prevention of Cruelty to Children in 1894 which was concerned with kid maltreatment and the effects of poorness and disadvantage on their life conditions ( Sanson A ; Wise, 2001:5 ; Tomison, 2001:50 ) . However, widespread public concern sing the ill-treatment of kids merely emerged when kid maltreatment was rediscovered by Dr H Kempe and his co-workers in the United States in the 1960 s. They coined the term battered baby syndrome and their work created involvement in child ill-treatment around the universe. ( Tomison, 2001:50 ; Parton, 2002:5 ) . At the clip kid maltreatment was seen as a socio-medical job, a disease which could be cured and prevented whereas today child maltreatment is presently framed as a socio-legal job with the accent on assemblage and measuring forensic grounds ( Parton, 2002:11 ; Tomison, 2001:52 ) . The professionalisation of kid protection services during the 1970 s and 1980 s saw the development of risk-assessment tools ; AIDSs to help workers in doing the right determination and to assist guarantee answerability. These developments saw the worker as the expert ; whereas current theories used in societal work in Australia such as strengths- based attac ks and narrative therapies emphasize a collaborative attempt between households and kid protection services ( Kreuger, 2007:237 ; Tilbury et Al, 2007:16 ) . The influence of the kid deliverance motion in the late nineteenth century on kid protection in Australia has been profound, peculiarly act uponing the history of societal intercession and remotion of Autochthonal kids from their households ( Sanson A ; Wise, 2001:8. ) .Child protection in Australia was foremost provided by preponderantly Christian church groups in the non-government sector and targeted abandoned, ignored kids and those with households considered socially unequal . Initially rescued kids were boarded with sanctioned households until subsequently old ages when orphanhoods were established. In the early yearss of colony the want that kids suffered in establishments was recognized, taking to further attention or get oning out being the preferable arrangement for ignored kids ( Tomison, 2001:49 ) . Indigenous Child Protection From the first white colony of Australia colonial values and attacks saw the land being regarded as Terra Nullius , Autochthonal people being treated as free labor at best and subsequent Torahs, policies and patterns that forcibly removed Autochthonal kids from their households ( HREOC, 1997:2 ) . The Colonial response to the atrociousnesss perpetrated on the Aboriginal people was to set up a associated state system which would segregate and hence purportedly protect Autochthonal people. By 1911 most Australian provinces and districts had reserved land and assigned duty and hence control of Aboriginal people s lives to a Chief Protector or Protection Board. This power was used to take Indigenous kids from their households with a position to change overing them to Christianity ( HREOC, 1997 ) . This policy attack would be considered racialist by current societal criterions. Australia has been slow to acknowledge and esteem the cultural values of the Autochthonal people of Australia i n every manner, including kid attention and protection. As the population of assorted descent people grew authorities functionaries responded by taking kids and lodging them off from their households with the purpose of absorbing and unifying them into the non-Indigenous population. The physical remotion of Autochthonal kids continued in many pretenses up until the 1960 s ; those people affected by this pattern are now known as The Stolen Generation. In New South Wales after 1940, Indigenous and non-Indigenous kids came under general kid public assistance statute law. The built-in racism in policy and pattern and deficiency of acknowledgment of cultural differences ensured that Autochthonal households were more readily found to be inattentive. Poverty was equated with disregard and Autochthonal households, ineligible for unrestricted public assistance support until after 1966, were judged as neglecting to supply adequately by non-Indigenous criterions ( HREOC, 1997 ) . Attachment theory is based on the joint work of John Bowlby and Mary Ainsworth. Attachment theory recognizes the importance of the early relationship between parent and kid and its influence on kids s future ability to organize healthy relationships. Bowlby s work on maternal want, based on the premiss that fond regard to a health professional is indispensable for endurance, was non applied to Autochthonal households in the 1950 s and 60 s in Australia ( Bretherton, 1995:759 ; Osmond A ; Darlington, 2002:1 ) . This failure can be attributed to the same racialist attitudes to Indigenous Australians that saw Australia declared an empty continent by the first colonists ( HREOC, 1997 ) . Looking through the lens of attachment theory at Australia s history of physical remotion of Autochthonal kids, it is easy to see the bequest of intergenerational agony and its on-going impact on the well-being of Autochthonal communities today ( Sanson A ; Wise, 2001:39 ) . From today s position histo ric kid protection patterns imposed on Autochthonal Australians are seen as kid maltreatment and ill-treatment. Prime Minister Rudd s apology, in February 2008, for the harm done to Indigenous Australian s through past policies of remotion, evidences the alteration in Australian societal values which are reflected in policy. In the Bringing them Home Report ( HREOC, 1997:19 ) , Sir William Deane acknowledges the extent to which present disadvantage flows from past unfairnesss and subjugation. The study recognizes the lasting wounding caused to the Stolen Generation by physical remotion and institutional maltreatment. All provinces and districts in Australia have accepted the Autochthonal Placement Principle as jurisprudence or policy ( SNAIC, 2002:66. ) This policy recognizes the importance of retaining Indigenous Australian kids s connexions to their community and civilization ( Ban, 2005:388 ) . The Indigenous Placement Principle embeds Autochthonal cultural values in societal policy by seeking to put kids within extended households and their communities. This rule is critical to turn toing issues such as Autochthonal kids being six times more likely to be removed than any other Australian kids and 20 times more likely to be in the juvenile justness system. This high rate of remotion can be attributed to structural issues such as poorness, deficiency of equal lodging and the intergenerational effects of policies that forcibly and intentionally removed Autochthonal kids from civilization and household ( Zuchowski, 2009:76 ) . In 50 old ages, approaches to autochthonal kid protection in Australia have radically changed ; they now reflect acknowledgment of past unfairnesss, regard for cultural differences and values and a committedness to partnership and coaction between authoritiess, services and Autochthonal Australians to construct capacities and resiliency in communities to maintain households and kids safe ( Calma, 2007 ) . Economic Impacts Thomson ( 2003 ) suggests that there is an institutional sightlessness to the function that poorness dramas in seting kids at hazard of injury. The rise of economic rationalism as the dominant doctrine through the 1990 s in Australian societal policy has been twofold: under- resourcing of public assistance services such as kid protection and a user -pays attack which sees the hapless and destitute farther disadvantaged. Economic rationalism is a potentially value loaded attack where those who are socially and economically disadvantaged held responsible for their fortunes. As Tomison ( 2001:52 ) acknowledges the focal point of economic rationalism on efficiency, effectivity and answerability potentially conflicts with the ethical committednesss made by societal workers such as a committedness to accomplishing societal justness ( Tilbury et al 2007:10 ; AASW, 1999 ) . Economic issues impact the rapprochement procedure with the Indigenous community as healing and rapprochement relies on damages of past wrongs ( HREOC, 1997 ) . Thorpe ( 2007 ) besides notes that a disproportional sum of resources in kid protection are spent on probe instead than attention. Current Social Policy Approachs: Prevention and early intercession The current discourse on kid protection, influenced by strength based and grounds based attacks, has shifted from speaking about maltreatment to speaking about injury ( Zuchowski, 2009:33 ) . Feminism and Post-modernism recognize linguistic communication as a site which contributes to specifying societal value ; these discourses have besides contributed to the displacement from speaking about maltreatment to concentrating on the injury done to kids. Harm is defined in The Child Protection Act ( 1999 ) as any damaging consequence of a important nature on the kid s wellbeing . This term allows for household and kid to lend to the appraisal of what is considered detrimental and significant ( Tilbury et al, 2007:4 ) . The focal point since the mid 1990 s in Australia has been on early intercession and bar ( Tomison, 2001:54-55 ) . Resilience has been recognized as a cardinal protective factor in kids lasting ill-treatment and high hazard state of affairss and accomplishing healthy and adaptative results. The turning acknowledgment that heightening protective factors to forestall ill-treatment of kids is cost effectual, and provides both societal and economic benefits, has seen an increasing focal point on the bringing of early intercession and bar services in Australia. These services are largely delivered through non-government bureaus such as Family Centres in New South Wales. Government policies now focus on health and well-being through heightening community, household and single strengths. These current strengths-based household support attacks are a contrast to historic attacks that sought to put duty and fault entirely with the parent. Children s wellness and well-being is now seen as a community duty ; the impact of the socio-economic environment in which the household lives is now taken into histor y ( Tomison, 2002:7 ; 2001:55 ) . Decision Harmonizing to Tilbury et Al the label kid maltreatment alterations harmonizing to societal context and reflects public sentiment and values every bit good as adept sentiment and reflects the grade to which society supports households to care for their kids ( 2007:6 ) . Furthermore apprehensions of kid maltreatment and disregard differ harmonizing to socio-economic position, civilization and cultural background ( Bowes A ; Watson, 2004 ) , as cited in Tilbury et Al. ( 2007:6 ) . What constitutes child maltreatment is dependent on societal and cultural values ; this is clearly evidenced in the alterations to the intervention and attention of kids throughout even the short history of Australia since white colony. The addition in presentment and confirmation of kids at hazard in the last decennary is the result of a widening definition of what comprises kid maltreatment ( Scott, 2006, as cited in Thorpe, 2007:1 ) . Australia s history of physical remotion of Autochthonal kids, the disjunction of British migratory kids from household, the maltreatment of kids in institutional attention and the on-going societal and mental harm that these patterns caused is now good known ( Thorpe, 2007:1 ) . These historic patterns are unacceptable and considered maltreatment and ill-treatment in Australia today. When compared with Australia s current collaborative and culturally sensitive attack to child protection it is clear that kid maltreatment, and community perceptual exp erience and response to it, reflect the dominant cultural and societal values of the twenty-four hours.

Sunday, November 24, 2019

Chemistry Jokes, Puns, and Riddles

Chemistry Jokes, Puns, and Riddles Chemistry terminology and jargon is ripe for puns and intellectual humor. Below is a collection of chemistry jokes, puns, riddles, and one-liners. Old Chemist One-Liner Old chemists never die, they just stop reacting. Coffee Riddle What is the chemical formula of coffee? CoFe2 Banana Riddle What is the chemical formula for a banana? BaNa2 Dead Chemists What should do you do with a dead Chemist? Barium! Dental Chemistry Riddle What do you call a tooth in a glass of water? A one molar solution. Ion Riddle What did one charged atom say to the other? Ive got my ion you. pH Chemistry Joke Why do chemists enjoy working with ammonia? Because its pretty basic stuff. Spy Chem What is the name of agent 007s Eskimo cousin? Polar Bond. Medical Elements Joke Q: Why do chemists call helium, curium, and barium the medical elements?A: Because if you cant helium or curium, you barium! Diamond Riddle What element is a girls future best friend? Carbon. Element Laughter What did the chemist say when he found two isotopes of helium? HeHe Neutral Neutron A neutron walks into a shop and says,Id like a coke.The shopkeeper serves up the coke.How much will that be? asks the neutron.The shopkeeper replies, For you? No charge. Norse Chemistry What element derives from a Norse god? Thorium. Mole Riddle Why was the mole of oxygen molecules excited when he left the singles bar? He got Avogadros number! Particle Charge Joke A proton and a neutron were walking down the street. The proton says, Stop, I dropped an electron. Help me look for it. The neutron asks, Are you sure? The proton replies, Yes, Im positive. Peroxide Joke Two chemists go into a restaurant. The first chemist says, Ill have H2. The second chemist says, Ill have an H2O too.... and he died. TV Chemistry What show do cesium and iodine love to watch together? CsI Words from Element Symbols I asked the guy next to me if he had any sodium hypobromite. He said NaBrO. Lawyer Chemistry Joke Why cant lawyers do NMR? Bar magnets have poor homogeneity. Chemistry Lab Safety What is the most important chemistry rule? Never lick the spoon! Mole Joke What was Avogadros favorite sport? Golf - because he always got a mole-in-one. Gas Chromatography Joke What emotional disorder does a gas chromatograph suffer from? Separation anxiety. Interview Joke Question at interview: What is nitrate (nite rate or night rate), Answer: double time. Chemistry Poem Poor Willie worked in chem lab. Poor Willie is no more. For what he thought was H2O was H2SO4! Assault and Battery What happened to the man stopped for having sodium chloride and a 9-volt in his car? He was booked for a salt and battery. Joke Why Chemists Are Great Why are chemists so great at solving problems? Answer: Because they have all the solutions. Alphabet Chemistry Riddle What is HIJKLMNO? H2O Silver and Gold Silver walks up to gold in a bar and says, Au, get outta here! Noble Gas Helium walks into a bar. The bartender says, We dont serve noble gases here. Helium doesnt react. Starving Chemists How did the chemist survive the famine? He subsisted on titrations. Chemical Formula Joke Q: What is the chemical formula for diarrhea?A: (CO(NH2)2)2 Football Cheerleader Q: How did the football cheerleader define hydrophobic on her chemistry exam? A: Fear of utility bills. The Chemists Ferris Wheel What do chemists call a benzene ring where the carbon atoms are replaced with iron  atoms? A ferrous wheel. Burger Chemistry Why does hamburger yield lower energy than steak? Because its in the ground state. Titration Chemistry Riddle What did one titration say to the other? Lets meet at the endpoint. Solution Chemistry Joke Florence Flask was preparing to attend the opera. Suddenly she screamed, Erlenmeyer, my joules! Somebody has stolen my joules! Her husband replied, Relax dear. Well find a solution. Titanium Chemistry Joke Titanium is an amorous metal. When it gets hot, it will combine with anything! The Half-Empty Glass The optimist sees the glass as half full. The pessimist sees the glass as half empty. The chemist sees the glass as completely full, half in the liquid state and half in the gaseous state. Cash Chemistry It has been discovered that money consists of a yet-to-be- indentified superheavy element. The proposed element name  is Un-obtainium. Spectrometry Riddle What did the mass spectrometer say to the gas chromatograph? Breaking up is hard to do. One Bad Clown What would you call a clown in jail? Silicon Ice Water H2O is the formula for water, what is the formula for ice? H2O cubed Sea Water What is the chemical formula for sea water? CH2O Oxygen and Potassium Did you hear oxygen went on a date with potassium? It went OK. Water and Peroxide Joke what is H204? Its FOR drinking, bathing, and mixing with scotch. Another Bar Joke What did the bartender say when oxygen, hydrogen, sulfur, sodium, and phosphorus walking into the bar? OH SNaP! Carbon Chemistry Pun Why did the chemist coat his shoes with silicone rubber? He wanted to reduce his carbon footprint. Water Chemistry Question: What is the name of the molecule CH2O? Answer: Seawater Polarity Chemistry Humor Why did the white bear dissolve in water? Because it was a polar bear. Superhero Chemistry Pun If Iron Man and Silver Surfer teamed up, theyd be alloys. Sodium Humor Does anyone know any jokes about sodium? Na. Yeah, I know that was sodium funny! Chemistry One-Liner If youre not part of the solution, youre part of the precipitate! Bad Chemistry Jokes Id tell you a chemistry joke, but all the good ones argon. Chemistry Joke Pun I wish to apologize for not having more chemistry jokes, but I only add them periodically. If you want to use chemistry pick-up lines, look no further.

Thursday, November 21, 2019

Discussion Board 8-1 Assignment Example | Topics and Well Written Essays - 250 words - 1

Discussion Board 8-1 - Assignment Example The shrinking nature of the brains of the elderly people has the potential to cause serious cognitive impairments upon dependence on a given drug. Compared to youths who depend on given drugs, drug dependent elderly are likely to suffer from serious and extreme visual and hearing impairments. Drug dependent elderly people may also suffer from poor memory as well as develop serious linguistic and communication skills (Parker & Liu, 2007). Despite of the differences, drug dependence among the elderly and the youths cause results to nearly similar consequences. For instance, drug dependence across the age groups is likely to cause damage to internal organs. The extent and speed of damage may largely rely on the quantity and frequency of intake (Parker & Liu, 2007). Drug dependence among individuals across the two age groups is also likely to lead to psychosis. Psychosis condition may presents as either hallucination or delusion or both. Hallucination involves seeing and hearing of things that do not exist in reality. Delusion on the other hand refers to believing of myths and concepts that are not true and hard to prove. These consequences have occurred in both youths and the elderly who abuse and depend on

Wednesday, November 20, 2019

Visual Arts and Film Studies Tests. Changes in exhibition from the Assignment

Visual Arts and Film Studies Tests. Changes in exhibition from the early 1900s through the 1940s - Assignment Example Moreover, cinema of attraction is based on shock, spectacle, and sensation. According to Gunning, cinema of attraction greatly differs with the contemporary narrative cinema that solicits a voyeuristic spectatorial gaze. It is an early exhibition where the spectators become overtly acknowledged, and invited to look. What is the PCA? In order to regulate morality and politics within films, the PCA (Production Code Administration), patrolled major issues that came about in the movies, moral barricades and the politics involved in movie productions. The government decided that wartime movies were very delicate to be left to the moviemakers thus the PCA, the Office of War Information, policing morality, and guarding politics made sure that the American screen was tightly regulated like no any other time in history. The PCA and its associated groups worked towards improvement in the film content in outright falsifications in others and evasions. What is a â€Å"star vehicle†? A ‘star vehicle refers to a movie, television show, or a play fabricated mainly to enhance a star’s career. The main aim of a star vehicle revolves around promoting a performer with the anticipation of inducting a bankable star. For instance, a bankable star compels the spectators to watch either the television show, play or even the film since he/she is featured in the project. Any successful star vehicle portrays unique talents exhibited y the star being promoted. In addition, a star vehicle can be created to showcase a star shifting from one genre to another. In a star vehicle, the young or inexperienced actor signs a long-term contract with a major studio. However, in some cases, the actor may produce for himself or herself a vehicle thus resulting to a form of self-promotion (Lewis, 2002). d. What does Jane Feuer mean when she refers to the â€Å"dual diegesis† of the backstage musical? Modernist cinema in association wi th Hollywood musical, use dual in the world of films in order to reflect the relationship of the spectator to the film. Dual diegesis in this sense parallels the use of internal audience. In other cases, dual diegesis calls attention to the discrepancy between reality and fiction, or history and fiction. According to Jane, Hollywood musicals are built upon a base of dual registers with the contrast between number and narrative defining musical comedy as a form. In the backstage, musical dual levels are apparent in contrast between the show or film and the backstage plot within the film, between the world offstage and world onstage. e. How was the production of Casablanca affected by U.S. entry into World War II? Scholarly research depicts that one of the main argument was that the government collaborated with the Hollywood industry to use film as propaganda during the Second World War. Due to the stigma that surrounded Hollywood in the early 20’s, directors and actors were co nvicted of outrage that led to public accusation of immorality within the film industry. Moreover, the government worked directly with Hollywood by using its films as a powerful tool to enhance the war. It was during t5his period that Casablanca was greatly affected. These films displayed anti-Japanese propaganda, grim images, and the sacrifices made by the American soldiers. Even after the war, the films continued to portray skewed sights of the war with glorifying efforts made by the soldiers to show the sacrifices they made were quite worthwhile. 2. What changes in exhibition took place

Sunday, November 17, 2019

Building Teams and Resolving Conflict Essay Example | Topics and Well Written Essays - 750 words

Building Teams and Resolving Conflict - Essay Example Furthermore, conflict resolution is a critical aspect of businesses in the contemporary world. This is owing to the fact that there is increased diversity in the workplace resulting to increased chances of conflict. An effective manager will have the solution to conflicts arising in the workplace. If he fails to do so, he will have failed his duty as a manager. This paper discusses some of the major reasons behind managers’ failures. One of the salient reasons for manager’s failure is poor communication skills. Managers who are passive communicators fail to pass the message across to their employees that reflect in poor performance that may eventually lead to failure (Dotlich and Cairo, 2007). Ineffectual managers tend to have poor communication skills as they do not listen to what the employees have to say and do not share their thoughts with them (Gallos, 2008). Decisions made by such managers are unilateral and employees cannot express their dissatisfaction and this impacts negative on the entity’s performance. There are those managers that lack authority and may fail to apply influential skills to face the problems in the organization. Managers who do not address the attitudes and feelings of employees are likely to fail as they face looming resistance from the employees. Conflict among employees is inevitable and managers should be prepared to deal with such situations once they arise. Employee conflicts have been an increasing phenomenon in the modern world owing to increasing diversity in the present times (Moley, Pietri and Mosley, 2010). If managers do not have the skills to handle employee conflicts effectively, they will fail as the work place will become chaotic and this will adversely affect the manager’s performance. Precisely, the way a manager handles conflict determines whether they will succeed or fail. A considerable number of managers experience flourishing

Friday, November 15, 2019

2D Colloidal Nanocrystal for Optoelectronic and Solar Cell

2D Colloidal Nanocrystal for Optoelectronic and Solar Cell Novel 2D colloidal nanocrystal for optoelectronic and solar cell applications Recently, 2D material has attracted tremendous attention due to their fascinating physicochemical properties. Particularly, the discovery of graphene, a single layer of carbon atoms arranged in a 2D honeycomb lattice has ignited the research on this class of 2D materials due to extraordinary mechanical, electric and optical properties not observed in their bulk counterparts. Considering graphene is a simple material composed of only carbon element, it cannot satisfy the increasing requirements of diverse applications due to limitations in the versatility and the tunability of composition, structure and functionality in addition to the paradox between the high-mobility Fermi−Dirac electronic structure and the need for a size-dependent band gap for traditional semiconductor devices. As a result, of paramount importance and interest is to search alternative 2D materials which possess much more flexibility and diversity of composition, structure, and functionality. Layered metal di chalcogenides such as WS2 and MoS2 have been extensively investigated. Like graphite, the atoms within the host layers form strong covalent bonding with relatively weaker interactions between layers such as van der Waals force. Consequently, micromechanical cleavage by Scotch-tape is the most straightforward method to obtain an individual layer while retaining their intrinsic host structure. Though it is crucial to evaluate their physical properties, this approach is time-consuming and the yield is also low. More recently, a direct liquid exfoliation where a suitable solvent is selected to stabilize cleaved crystallites was proposed to produce nanosheets. This process, comprised of ion-exchange, osmotic swelling, and exfoliation, is useful, but the concentration of unilamellar nanosheet in the solution is still very low with the yield no more than a few tens of percentage and the properties of the resulting nanosheets are dictated by their parent 3D materials, which loses the opport unities to design and control over chemical composition and structure. In order to meet the demand for fabrication of functional nanostructured electronic and optoelectronic devices, a facile process to produce large amount of 2D nanocrystal (NC) with possibility of tuning the properties is really imperative. Colloidal chemical synthetic route has been demonstrated highly attractive and powerful for their low-cost synthesis to obtain NCs from solution in excellent yield with a good uniformity in terms of chemical composition, surface properties, shape, and size. The complete control over size, shape and structure of the colloidal NCs via tuning reaction chemistry provides new pathways to design material where size or shape dependent properties can be exploited. In this project, the metal dichalcogenides such as MoS2 and WS2, typically with a trilayer structure of covalently interconnected layers of S, M, and S atoms, will be the main candidates. High performance solar cells built from them in 2D NC form is the final goal. As such, colloidal synthetic route will require balance of the reagent choice and reaction chemistry to accurately control the growth in the NC. All the advantages of 2D colloidal NCs will be exploited to fabricate solar cells in low cost while retaining efficiencies towards 10%. The objectives of this proposal are as follows: Develop colloidal synthetic routes for 2D colloidal NCs. Balance the reagent choice and ligand chemistry to achieve NC growth with controllable size, shape, and particularly thickness. Assemble 2D colloidal NCs to device scale area and perform correlative material studies with electronic properties (carrier lifetime, photoluminescence, carrier mobility). Fabricate all-inorganic NC solar cells and optimize in the device parameter space towards high power conversion efficiency. The project will be divided into three work packages (WPs) with a number of tasks in each WP structured to achieve the aims and objectives. Work Package 1 Controllable synthesis Task 1.1 Develop colloidal synthetic routes to 2D semiconductor NCs. Hot-injection method which involves the injection of a cold solution of precursor molecules into hot liquid will be employed due to the instantaneous formation of nuclei with slow growth of the existing nuclei but not to new nucleation for well controlled size and thickness. The product will be separated by centrifuging and washed up for characterization and analysis by XRD, electron diffraction and HRTEM for structure, and EDS and Raman for chemical composition. Task 1.2 Monitor and control the thickness, doping and their effect on the optical properties. Unlike 0D and 1D NC, in addition to control over composition and structure of 2D NCs, of particular interest is to rationally design and tune the thickness-dependent optical and electronic properties. For example, few-layer MoS2 has an indirect bandgap, but when it is thinned to single-layer, it becomes direct bandgap leading to enhanced photoluminesence. In this task we will monitor the effects of the thickness distribution particularly on absorption and photoluminescence (lifetime and QY). The latter will also be used as a metric to decide on the more promising routes for device fabrication, focusing on highly PL materials as the most promising candidates. In addition, substitutional or interstitial doping of metal sites within 2D NC may be employed to engineer optical characteristics. Work Package 2 Optoelectronic Properties of NC solids The presence of covalently bound ligands on the surface of colloidal NC provide a versatile synthetic handle for tailoring the structure, stability, and importantly electronic and optical properties. The deviation of composition and atom arrangement along the terminating edge and corner sites of 2D colloidal NCs also offers another way to tune their properties. One of the key determinant factors of the performance of solar cells is the carrier mobility. In this task we will investigate ligand exchange strategies using ligands that are shorter than 0.3 nm and contain functional head groups such as di-thiol groups and carboxyl-acid based groups. At the same time those functional groups should serve to passivate dangling bonds and therefore their electron-donating density will be chosen accordingly. We will monitor the effect of those ligands on carrier mobility by performing CELIV measurements in diode structures resembling an actual solar cell device architecture as well as using FET mobility measurements. In addition to high carrier mobilities NC solids for efficient solar cells call for long carrier lifetimes. Such long lifetimes can be achieved by suppressing trap states and recombination centers typically caused at grain boundaries and interfaces. The role of this task is to monitor the degree of passivation of the ligands utilized with Photoluminescence and PL-lifetime measurements. Work Package 3 Photovoltaic device fabrication, testing and optimizing Task 3.1 We will develop simple Schottky and bilayer heterostructures in which the sole photoactive layer is the 2D NC which can be achieved by using a transparent n-type high bandgap semiconductor to form a junction. We will then perform carrier lifetime and recombination-rate characterization employing transient photovoltage and photocurrent measurements. Task 3.2 Optimization of heterojunctions based on 2D NCs. We will perform a device optimization study in which we will study the effect of layer thickness and contact selection to maximize efficiency. The optimized thickness will be sought as a combination of the expected carrier diffusion length and achievable depletion widths based on the mobility, lifetime and carrier density of the semiconductor. Appropriate contacts will be investigated based either on inorganic (MoOx) or organic hole transport layers (electron blocking layers).

Wednesday, November 13, 2019

The Truman Show Essay example -- Papers

'The Truman Show' is the story of a baby who is bought by a television company at birth. He becomes the star of the television programme, but he has no idea that his life is being filmed. All the people in his life, such as his wife, best friend, and colleagues are actors. There are no set scripts. There are three different worlds shown in the film: Truman's world, the producer's world, and the real world when we see the viewers watching the programme in the homes. The film starts when Truman is twenty-nine. We see him begin to become suspicious, by odd occurrences, such as a light falling from the sky, the way his friends and family advertise things, and people that accidentally get on the show and tell him things. Truman has always wanted to travel, but obviously he can't because the set of 'The Truman Show' is only one town. He saw his father 'die' whilst they were sailing together, and the fictional director of 'The Truman Show' did this so Truman would be thalassophobic, and wouldn't want to travel that way. Eventually he wants to get out of the town because of all these suspicions, and he gets delayed for ages trying to go by car. He plucks up the courage to go by boat and after sailing for a while he hits a backdrop with clouds painted on it. Christof's voice is heard and he speaks to Truman, though he can't be seen. He tries to persuade Truman to stay in the world he created for him, and tells him that he is the star of a television show. Truman finds a door, and after some conversing with Christof, he leaves. The director's intentions ------------------------- Peter Weir was the director of the film, 'The Tru... ...ch as a busy pub all watching, the two old ladies, the security guards, the man in the bath, and Sylvia. We also see shots from the producers control room, so in this last sequence we see from all of the three worlds that we se at different stages in the film. Up until now, the different worlds are shown, but they're quite spaced out in the film. In this last sequence, we see them a lot more regularly, instead of just Truman's. It almost seems that we see from the audience more to show that Truman is going to be in that world soon. People from the different worlds are coming together, because Truman's left, and the production team will all be out of jobs. This is important because there is a lot in the film saying that the real world is a bad place, but in the end it's where we all come from, and where we all belong.

Sunday, November 10, 2019

A Review of the Work and Play poem By Ted Hughes

This poem is about a comparison between a swallow and human beings that are on a day trip. The swallow, is at work in the poem and is feeling content. The humans, however, are supposed to be relaxing and having fun, but they feel miserable instead. With this, there is irony here with the title, as the swallow is working but having fun. The writer, I feel, is being biased in his poem. He tends to be in favour of the swallow. The poem is describing the people as ‘polluting' the environment. The message of the poem is that we shouldn't destroy our environment and our health by ‘baking' ourselves under the sun. The poem talks about the tourists arriving and then leaving unhappily. The writer is also describing the swallow's day, what it does to entertain itself and returning to its home at night. The poem is split into four, unequal stanzas. The first three stanzas, start off with a description of the swallow and then humans. The last stanza, however, starts off with a description of the humans and then the swallow. This makes us stop, think and more eager to finish the poem, as it's a change of pattern. The writer, perhaps wants to leave the reader with a positive and happy image rather than a negative and discomforting image. In the first three stanzas, the end of the two longest lines rhyme, forming a sort of rhyming couplet, e. g. â€Å"†¦ dust† and â€Å"†¦ bust† in the first stanza. In the first stanza, the writer, uses alliteration in the first phrase, â€Å"The swallow of summer, she toils all the summer† the use of ‘s' words. This gives the line a sort of rhythm to it. The metaphor, â€Å"A blue-dark knot of glittering voltage,† gives us this impression of a bright, powerful and energetic image of the swallow. The word, ‘glittering' also gives us an image of the swallow's shiny feathers. A whiplash swimmer†¦ † gives us a sense of the swallow's speed, rapid. Then the poet writes, â€Å"But†¦ † which is used at the beginning of each of the human's description in the first three stanzas, a form of repetition. The poem gives us a happy, positive image, when describing the swallow, at the start of the first three stanzas. Then, he uses ‘But' when starting to describe the humans, which start to give us a miserable and gloomy feel towards the humans. The writer, uses the metaphor ‘Serpent' to describe the long line of cars trying to get through traffic. This is a good metaphor to use because, if you are looking from a birds-eye view, the roof of the cars, looks like the scales of a snake. There is also, how the cars move along the swerving roads, like how a snake moves. â€Å"†¦ that crawls through the dust† this metaphor, gives us an image of the slow moving cars. A serpent, is a venomous creature, a sign of evil, the devil, which is a sign, that the writer is being biased in his poem. The phrases â€Å"shimmering exhaust† and â€Å"its fever in ocean† are telling us that they've already polluted the water before they, the humans, have even arrived there. In the second stanza, the writer uses a metaphor, â€Å"†¦ the barbed harpoon† in the first line, to describe the swallow. This gives us an impression of the swallow's impact and body shape, as she dives in. The writer uses alliteration in the second line, â€Å"†¦ flings from the furnace† and the word ‘flings' creates a sense of movement, it makes the reader read with expression. The metaphor, â€Å"†¦ a rainbow of purples† creates an attractive image for the reader. In the third line, he uses alliteration again, â€Å"†¦ he pond and is perfect† and this is creating a positive image. In the description of the humans, he uses repetition, â€Å"But the serpent of cars†¦ † to make you remember it, so it stays in your head that negative feeling. Another metaphor used is, â€Å"Disgorges its organs† which is referring to the people, making their way out of the cars, like a snake, shedding its skin, this is giving us another unpleasant image. The two similes used, â€Å"Which roll like tomatoes† and â€Å"Nude as tomatoes† gives us a negative image of these large, lazy, sunburnt people, lying on the beach. With sand in their creases† gives us an uncomfortable feeling. The word ‘cringe' in the last line gives this embarrassed feeling, a negative feeling. The writer, is clearly using a lot of negative images to bring out his message. The onomatopoeic word ‘screech' is used to give us an image of the negative sounds on the beach, the people's discomfort. In the third stanza, the writer uses a lot of alliteration in the first two lines. The use of the ‘s' words, ‘swallow', ‘summer' is a bit onomatopoeic, producing a sense of the bird's movement. He uses the word ‘seamstress' to describe the swallow, meaning a dressmaker. This metaphor is used to show how she sews something using the sky and water as her material, which makes it now an extended metaphor. In the third line, it is describing its movement, the twists and swerves. The word ‘draws' provide a long sound and the word ‘knots' provide an abrupt, short sound, perhaps showing the swallow's movement, gliding and then halting abruptly. The writer then uses ‘But' again and brings back the negative image. The humans are described as † †¦ aid out like wounded† the metaphor is showing their pain in sunburn, laid out in rows, endangering themselves, like a line of wounded soldiers. The metaphors, â€Å"Flat as in ovens† and â€Å"Roasting and basting† gives us the impression they are being cooked. They're being compared to cooking meat. The word ‘basting' is describing the humans putting on sun cream and there's a bi t of irony between the way we cook meat. The word ‘torment' shows us their agony and the word ‘blue' gives us an impression of the heat, as hot as a blue flame and the sun's harmful rays. The lack of language in the description of the humans makes the reader read with one breath, leaving them in discomfort, to perhaps experience how the humans are actually feeling. The line â€Å"Their heads are transistors† is describing their heads as being heat damaged and they're like robots, moving a limited amount. â€Å"Their teeth grit on sand grains† is sort of a repetition of the line â€Å"with sand in their creases† in the second stanza, to remind us of the humans agony. The hyperbole and metaphor, â€Å"Man eating flies† shows us their annoyance and pain with the insects. Their ‘electric shock needles' make conditions worse, more pain, the physical horror of it all and it gives us a diseased image, another negative image. In the last stanza, there is use of alliteration, â€Å"They can climb in their cars†¦ † The word ‘climb' is used to describe how the humans get into their cars, showing their tiredness. The repetition with, â€Å"†¦ raw bodies, raw faces† provides us with an image of these sunburnt people, the colour of raw meat, blood red and the repetition ‘hammers' this image into our heads. The line, â€Å"And headache it homeward† gives us an impression of these tired and hot people returning home. The metaphor and hyperbole â€Å"a car full of squabbles† and the line, â€Å"And sobbing and stickiness† shows us this negative image of how the children in the car, are moaning and throwing tantrums. Then, the writer is using repetition again, â€Å"With sand in their crannies† a similar description is used in the previous two stanzas. It shows us that even though they are going home, they still feel uncomfortable. The line â€Å"Inhaling petroleum† brings us back to the message of the poem, with the humans polluting the planet. The writer describes it as pouring out from the ‘foxgloves'. Foxgloves are poisonous flowers. The writer here is perhaps comparing the exhaust to these flowers. The flowers produce a poison, venom, which a serpent produces also, one damages your health and the other damages the environment, they are both dangerous. The poem then moves on to describing how the swallow returns home. Alliteration is used again, â€Å"The swallow of summer, cartwheeling through the crimson,† to give the line a rhythm. The word ‘cartwheeling' gives us this image of the bird flying home with happiness, through ‘crimson', this is describing the wonderful sunset, the orange, yellow and red background. Touches the honey-slow river and turning† the word ‘honey' gives us a sweet image. The river is a honey colour, due to the sun's crimson rays reflecting onto the water. The writer wants to leave us with a pleasant image at the end of the poem. The swallow is described as ‘hand stretched' when returning to its home. The words are showing us that the swallow is welcome d back, it is also perhaps referring to God's hands reaching out to this wonderful creature he has created. The humans, however, â€Å"†¦ headache it homeward† Nobody welcomed them home, their journey home, was destroying the environment. The last line of the poem, † A boomerang of rejoicing shadow. † leaves the reader in content but also thinking about the whole message of the poem. The metaphor used, ‘boomerang' is a good metaphor to use because a boomerang always returns when it's thrown. The writer has used three different, but similar and powerful metaphors to describe the swallow. The three metaphors he has used, has provided us with a powerful image of the swallow. The swallow is rejoicing because, everyone has left, her day is over and now she can relax with happiness. I think, this poem has really made me think, that a day out can really cause so much danger to us and to our planet. The irony of the poem, makes you think that a swallow who works hard can still be so happy with its life and there's us, who laze about and is feeling unhappy, so why do we do it? The writer has used a lot of good descriptive metaphors and similes in his poem. I liked the metaphors he used when describing the humans on the beach, â€Å"Are laid out like wounded†, â€Å"Flat as in ovens† and â€Å"Roasting and Basting†. It really emphasises the whole idea of the humans endangering their lives for some pleasure but they still feel unhappy at the same time. Ted Hughes has really shown his point of view about the situation. He has done this by showing such negative images when describing the humans, making out that the humans have been put on this planet just to destroy it and the animals are living how God would like the humans to live. The way, how the poem is structured to how the writer wants the reader to feel, is a good effect. This brings some realism to the poem and it involves the reader more.

Friday, November 8, 2019

imperialism essays

imperialism essays During most of the 19th century, our national policy was isolationism, meaning that we would steer clear of all foreign affairs. The policy was constructed and put into effect due to George Washington's Farewell Address. He stated that since we are a small, young country, we should not get involved in foreign affairs. However, after western expansion out to the pacific coast, in the late 19th century, we began looking overseas. Our country felt that expansion overseas was not only necessary, but demanded in order to have power. At the same time, not everyone agreed towards overseas expansion, and that caused great disagreement within the country. Now we look back, and the question is, was the United States justified in becoming an imperialistic power? I believe the US was. Based on several sources, I think we were justified. In document 1, Alfred Mahan, a Navy Officer and supporter of imperialism, stated why we needed to expand internationally. Before the start of the Spanish American war, Mahan wrote a book called The Interest of America in Sea Power. In it, he states that we must begin to look outward because of the growing production of our country, our location between Asia and Europe demands it, and the public feelings demands it. Mahan was helpful in creating the Great White Fleet. His reasoning's for why we should expand revolved around the Navy. While growing would protect us, like Mahan wanted, it would also help us in other aspects. In Document 6, we see that if we acquire the countries in the pacific, we will be closer to China. China has excellent trading privileges for us. In China, there were spheres of influence, where certain countries had special trading advantages. We also issued the Open Door Policy allowing trade throughout China f or all. Besides having markets and trading, from acquiring these "stepping stones" in the pacific, we will also gain military strength for forces and we'll be able refuel and repair our ...

Wednesday, November 6, 2019

Othello Essays (953 words) - Othello, Iago, Michael Cassio, Roderigo

Othello Essays (953 words) - Othello, Iago, Michael Cassio, Roderigo Othello Othello - A Racist Play? Although there are lots of things to suggest this is a racist play I don't think that racism actually dominates the play, even though it has a racist theme. There is a romantic union between black and white which gets destroyed because most people think the relationship is wrong. At the time the play was written, 1604, even the Queen of England was racist so there must have been a strong hatred of blacks around that time. Most racist comments in the play are said by people that are angry or upset. For example, when Emilia found out that Othello had killed Desdemona she was extremely mad and she called Othello a Blacker devil, this was the only time in the play that she had said anything racist about Othello. The main characters that have racist attitudes are Iago, Brabantio, Roderigo and Emilia, with the hatred of Othello as the basis for their racist actions and comments towards him. Iago is the most racist character in the book as he has it in for Othello right from the start. What sparks off Iago's hate towards him is the fact that when Othello chose his lieutenant , it was Cassio who was chosen instead of Iago. What made Iago angry was the fact that Cassio had no experience in war when he did and Cassio was chosen instead of him. Iago does not say anything racist to Othello's face but he has a lot to say against him behind his back. He schemes to destroy Othello and anything in his way including Cassio and Desdemona. The first time we hear one of his racist comments is when he's talking to Brabantio about Othello and Desdemona, Even now, very now, an old black ram is tupping your white ewe. Iago says this to try and turn Brabantio against Othello. Iago uses racist comments all the way through the play, as he tries to turn people against Othello, for example calling him a Barbary Horse. He never says anything racist to Othello's face because in his plot he had to be his best friend, so as not to make him suspicious that Iago was causing all the trouble for him. Iago is jealous of Othello for many reasons, one being that Othello has higher ranking in the army than him, and also he has a good marriage with Desdemona which Iago does not have himself with Emilia. These are the main causes of his hatred for Othello and the reason he adopts such a racist attitude. Roderigo is another one of the racist characters in the play, being so right from the start. He is Iago's accomplice and will do anything that Iago wants him to. I think he does this because of the way Iago can twist a situation to make it sound as if Roderigo would get something good from it but in the end he doesn't. One of the racist names he calls Othello behind his back is Thick-lips . He hates Othello because he's jealous of him as he also loves Desdemona but cannot have her. I don't think he views Othello in a very bad, racist way but uses the racism against Othello because he's jealous of him. Neither Roderigo or Iago would say anything racist to Othello's face as he is the general of the army. Brabantio is also a racist character, and is enraged when he finds out that his daughter, Desdemona, has been seeing the moor behind his back. Brabantio is so mad he sends out his guards to catch Othello and put him in prison. Brabantio views Othello as a foul and dirty no good black, I think this racist view of his is because he's angry when he finds out that his daughter has been seeing this moor. Unlike Iago and Roderigo, Brabantio will openly make racist comments about Othello to his face such as, lascivious moor, Wheeling stranger. Brabantio can do this because he is the Senator of Venice and is higher in rank than Othello. The other character who is racist towards Othello is Emilia, the lady in waiting to Desdemona. Emilia is disgusted with Othello when she finds out that Othello had killed Desdemona this is the

Sunday, November 3, 2019

One mans obscenity is another mans bedtime reading. (Geoffrey Essay

One mans obscenity is another mans bedtime reading. (Geoffrey RobertsonConsider whether the UK law of obscenity should be abolished or reformed in relation to literature or film - Essay Example may â€Å"tend to deprave or corrupt persons who are likely, having regard to all the relevant circumstances, to read, see or hear the matter contained or embodied in it.† This definition has been derived from the case of R v Hicklin2 where the Plaintiff Henry Scott was charged for publishing an offensive, anti-Catholic booklet. The decision of the trial Court finding Hicklin guilty was reversed by the higher Court who upheld Hicklin’s argument that the intent behind the publication of the booklet was not to corrupt and deprave. This decision was however reversed by the Queen’s Bench which held that the intention was immaterial if the matter was obscene. This case set a precedent wherein selected passages from a work could be examined out of context to determine obscenity and if found, the entire work could be removed from public consumption. This standard of obscenity has since been revised in subsequent cases. Two of these important cases are Roth v United States3, in which Mary Dennett, a birth control activist was held accountable in the same manner as Scott was in the Hicklin case, of publishing a booklet that was deemed to be obscene. The Supreme Court however did not find the work to fulfil the criteria of â€Å"depraving and corrupting† the reader of the material, because it essentially constituted sex education which was presented in an acceptable way. Thus, this case established that when an obscene passage is viewed in the context of the entire work which on the whole was presented decently, it would not be classified as obscene. The Court also raised the important issue of protection of the First amendment rights to freedom of speech guaranteed under the United States Constitution, which would have been violated if a decision had been made to ban the work purely on the basis of some passages that some readers found obscene. This case has thus raised two important issues that rose in opposition to the argument in support of a finding of

Friday, November 1, 2019

CHILDHOOD OBESITY Research Paper Example | Topics and Well Written Essays - 4000 words

CHILDHOOD OBESITY - Research Paper Example s learn about the childhood obesity problem is essential in equipping the students with the best practices for intervention in the issue of childhood obesity. The findings are important since they emphasize the interventions nurses should play in addressing the issue of childhood obesity. Berkowitz, B., & Borchard, M. (2009). Advocating for the Prevention of Childhood Obesity: A Call to Action for Nursing. The Online Journal of Issues in Nursing, 14(1), 2-9. Retrieved March 20, 2014, from http://www.nursingworld.org/MainMenuCategories/ANAMarketplace/ANAPeriodicals/OJIN/TableofContents/Vol142009/No1Jan09/Prevention-of-Childhood-Obesity.html Like the work carried out by Ben-Sefer (2012), these two authors engage in another systemic review although they focus on literature related to childhood obesity and nurses’ interventions in the population. Hence, the authors offer a background for the discussion of childhood obesity by examining factors contributing to overweight and obesity in children and investigate the intervention roles of nurses and their intervention strategies. The authors conclude that literature supports the important intervention role of nurses in a family-based approach that focuses on advocacy, development of skills among parents, and collaborative leadership with families in order to establish healthy living among children and prevent obesity at a young age. Hence, the article is an important component of my study as it accentuates the fact that nurses have an intervention role to play. Bohman, B., Ghaderi, A., & Rasmussen, F. (2013). Training in Methods of Preventing Childhood Obesity Increases Self-efficacy in Nurses in Child Health Services: AÂÂ  Randomized, Controlled Trial. Journal of Nutrition Education and Behavior , pii: S1499-4046(13), 00691-X. This is a quasi-experimental study that involved a randomized, controlled trial conducted in child health services in Sweden with 60 nurse practitioners of which 38 subjects were control