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5369 Uppsatser om Atmosfärisk refraktion - Sida 7 av 358
Förekomst av hyperopi bland hjÀlpsökande pÄ en VFA-resa i Bolivia
Syfte: Att undersöka förekomst av hyperopi i förhÄllande till lÀskunnighet hos hjÀlpsökande hos VFA i Bolivia, samt jÀmföra med studier frÄn andra delar av vÀrlden.Metod: Studien utfördes i april 2010 pÄ tre olika orter i centrala Bolivia. Patienterna sökte sjÀlva upp platsen för att fÄ en undersökning. Subjektiv refraktion utfördes binokulÀrt, utan dimning, med hjÀlp av provbÄge, provlÄda och syntavla med Snellen E, uppsatt pÄ 5 meters avstÄnd. Hyperopi rÀknades som sfÀrisk ekvivalent ? +1,00 D, myopi som ? ?0,25 DS.Resultat: 1 313 personer undersöktes, varav 1 271, mellan 6 och 92 Är gamla, ingick i studien.
Risk Management for commodity consumers -A study of the Airline industry-
The aim of this study is two folded. We wish to investigate if there is a value premium from hedging jet fuel exposure for American and European airlines. We also seek to answer if airlines can affect their probability to default by using Risk Management. During the period 2003 ? 2006 there existed a value premium for airlines that hedged their expected future consumption of jet fuel.
Disputing the Economic Man - a quantitative study on whether investor decision-making can be distorted by altering the presentation of an Exchange Traded Fund
During recent years, financial innovation has given rise to numerous structured investment opportunities aimed towards the general public. These have enabled private investors to engage in high-risk investments offering as much as 400 per cent leverage while oftentimes not fully having grasped the risk involved. The issuers of these securities have been criticized for using advertising of a too aggressive and misleading nature.By presenting 819 potential investors with two different investment opportunities yielding the same return over a six day period, we have aimed to assess whether the inclination of being affected by judegmental heuristics varies with factors such as knowledge, overall attitude towards the asset class, risk appetite and experience from previous investments.We have observed that investors' perception of the attractiveness of an investment can be distorted by altering the information presented to the investor. However, our findings show that this tendency decreases with an increased level of knowledge, experience and risk appetite..
Barriers to convert to organic farming and the role of risk : an empirical application on Swedish data
To understand the motives, and perhaps more importantly the barriers, for farmers to convert from conventional to organic farming is of great interest for policy makers as well as for academics. In Sweden and in other EU countries, proposed targets of the area in organic farmland have failed to be reached in spite of different kinds of policy measures. Most studies agree that the average profitability seems to be comparable to or better in organic than in conventional farming. This would indicate that there must be other factors of importance which can explain the low particiapation rate. A higher perceived risk in organic farming with respect to yield and price is frequently brought up as a potential explanation within a qualitative framework.
IT-stöd för riskhantering : En studie av risk och kvalitetsarbete vid ZERT AB
This paper presents a project and literature overview about how risk management and quality sometimes goes hand in hand and sometimes in two different directions. Meaning that the risk management can affect product or process quality differently depending on what risks an organisation chooses to control.The purpose with this paper is to get a deeper understanding about how risk and quality works together with IT-support and therefore we have been actively participating in a project with a risk management company called Zert. A literature study and a qualitative interview study have also been undertaken to see what the customers and the other researchers have written, to be able to make proper conclusions on the subject.To easily work together and get the information that was needed, four methods where used. Besides the qualitative interview and literature study the think-out-loud, card sorting and a variation on the extreme programming method where used to help visualize and improve communication both with Zert, the costumers and among ourselves.Zert is a risk management company that helps other organisations to control their different types of risks that they might be taking, by offering a system where the risk management process is held and providing consulting services by helping within the processes. Both Zert and their customers see the communication, knowledge and teamwork as something important as well as the quality within the work, processes and the end result.
Riskhantering i projekt : Modell för uppföljning
In April 2010 VÀgverket (the Swedish National Road Agency) andBanverket (the Swedish National Railway Agency) will merge intoTrafikverket (the Swedish National Traffic Agency). Trafikverket willassume unified responsibility for the risk management that atpresent is responsibility of VÀgverket and Banverket separately. Atpresent, as it will be shown in this thesis, VÀgverket and Banverketshare the same theoretical background for risk management but usedifferent implementations often within the same agency. The use ofdifferent implementations results in a reduced transparency of therisk management both within and outside the agencies: this willbecome even more problematic when they will be fused intoTrafikverket.The aim of this thesis is to review the current risk managementmethodologies used at VÀgverket and Banverket and to suggest aunified tool for the risk management at Trafikverket. This will bedone by focusing in particular on construction projects, one fromVÀgverket (Partihallsförbindelsen) and one from Banverket(NynÀsbanan).
GrÀnsöverskridande företagsförvÀrv : En event study av systematisk risk
Internationaliseringen har ökat under de senaste Ären, och företag vÀljer att lÀgga delar av verksamheten utomlands. Tidigare forskning undersöker sambandet mellan denna diversifiering och dess konsekvenser för företagen. GrÀnsöverskridande diversifiering och företagsförvÀrv bör enligt tidigare forskning ge en lÀgre systematisk risk dÄ risken sprids ut över flera marknader.Syftet med studien Àr att se om tidigare forsknings resultat gÄr att tillÀmpa idag nÀr svenska företag gör grÀnsöverskridande företagsförvÀrv. Vi har valt att applicera en event study-metodik för att undersöka detta samband enligt marknadsmodellen. Studien undersöker 66 svenska fall av grÀnsöverskridande företagsförvÀrv, gjorda under perioden 2005 ? 2007.Resultatet visar att tidigare empiri, att företagen skulle ha lÀgre systematisk risk efter ett grÀnsöverskridande företagsförvÀrv, inte gÄr att tillÀmpa idag pÄ de svenska företagen.
Riskkapitalbolags inverkan pÄ risk för finansiell kris i portföljbolag: En studie av 53 transaktioner i tillverkningsindustrin
The aim of this small thesis is to investigate if the probability of business failure is higher at the time of divestment than at the time of acquisition for portfolio companies that have been subject to private equity ownership. The background for this thesis is the widespread critique aimed at private equity firms, claiming that they increase the risk in their portfolio companies. We have performed a study of 53 buyout transactions, involving Swedish manufacturing companies, covering a time span of 13 years, from 1995 to 2007. We find evidence of an increased risk of business failure for the portfolio companies with a short forecasting horizon (within one year). The absolute increase in the sample is however small.
Ett barns behov av akut skydd : En kvalitativ studie om socialtjÀnstens omedelbara skyddsbedömningar
The thesis had its starting point in the first paragraph of the eleventh chapter in the Swedish social services act, which discusses the immediate risk assessments that has to be made when the social services receive a report about a child. The thesis highlights an area that has received a lot of attention in media since the spring of 2014, when an eight year old girl was fatally abused by her legal guardians. The social services had at the time received a report about the girl but it was left unread. This tragic case has brought attention to the routines used by the social services for dealing with reports and risk assessments. This thesis was conducted through individual interviews with social workers working with children and families in the social services, with the aim to acquire an enhanced understanding of how social workers perform immediate risk assessments and what these assessments are based on.
Finansiell analys med avseende pÄ risk: En studie av svenska fastighetsbolag
The purpose of this thesis is to investigate the status of Swedish real estate companies in terms of financial health and risk of financial distress. The background is the ongoing financial crisis, which partly can be derived from the American real estate sector. Publicly available accounting information from 16 listed real estate companies has been analyzed for a period of one year using financial ratios covering both the operational and financial activities. We find that the deceleration in the economy and in the real estate sector have forced the real estate companies to make large write downs, in line with the relatively new accounting rules, IFRS. Write downs are likely to reoccur during the following periods and real estate companies will therefore probably be forced to continue to show negative results.
Relationen mellan dansundervisning och elevens utveckling av sociala h?llbarhetsf?rm?gor
Syftet med denna litteraturstudie ?r att unders?ka vad forskningslitteraturen s?ger om
relationen mellan dansundervisning och elevens utveckling av sociala h?llbarhetsf?rm?gor
hos eleverna i ?ldrarna 10?25. Den svenska skolan har ett ansvar att f?rbereda elever att
kunna verka inom ett demokratiskt samh?lle och det ?r viktigt att ge elever en undervisning
d?r de f?r m?jlighet att utveckla f?rm?gor som de kan anv?nda sig av i en st?ndigt komplex
och f?r?nderlig v?rld. Vi har anv?nt oss av ?United Nations Educational, Scientific and
Cultural Organization?:s (UNESCO) lista p? f?rm?gor vars tanke ?r att frambringa
?sustainability citizens?.
Klassificering av processutrustning - en grund för riskbaserat underhÄll
In this report a systematic working procedure for risk classification of processing equipment from a maintenance point of view is described. How this system has been worked out is also an important part of the report. The classification system is adapted for use in complex processing plants. Preemraff Göteborg has been subject for the underlying study and application of the system.The system aims to give a good overview of the maintenance related risks at the plant. Furthermore, the analysis result is a good motivation for the suggested maintenance activities and as motivation for extended or decreased maintenance resources in total.
Risk och avkastning för tre portföljer pÄ Stockholmsbörsen 2006-2010
Analys av portföljer, sammansatta av hög-, mellan- och lÄgrisk aktier..
Lönsamhet i svenska banker - En tidsserieanalys av de svenska storbankernas lönsamhet och risktagande
This study aims to scrutinize the four major banks in Sweden on how their profit havedeveloped over a time span of 15 years, whether stricter regulations have had anyimpact on financial key ratios and if there is any correlation between the banksprofitability and their risk taking. The period covered is the years 2000-2014. Thefigures are annually and the four major banks are; Handelsbanken, Nordea,Skandiviska Enskilda Banken (SEB) and Swedbank.The findings are that financial key ratios that include net income are pro-cycle whereSwedbank has the biggest volatility over the period and that the three other banks areless, but clear pro-cycle. There are also indications that stricter rules have madeimpact on the volatility of the profitability even though the period covered is notenough to ensure this claim. Nordea has had the lowest and most stable capital ratiothroughout the period and the other three banks lowered their debt-to-equity ratiosignificantly after the financial crisis in 2008.
Prevalensen av hyperopi och astigmatism hos barn med ospecifika lÀs- och skrivsvÄrigheter respektive barn med dyslexi.
Syfte:MÄlet med studien var att undersöka om prevalensen av hyperopi (och inducerad hyperopi) och astigmatism skiljer sig mellan barn med dyslexi och barn med ospecifika lÀs- och skrivsvÄrigheter. Blir de hjÀlpta av eventuell korrektion?Metod:Skolpedagoger i Kalmar, Nybro och MörbylÄnga lÀmnade ut inbjudan för synundersökning till barn med lÀs-och skrivsvÄrigheter.Synundersökninanra genomfördes pÄ C-optik synklinik i Kalmar.Tjugofyra barn med ospecefika lÀs- och skrivsvÄrigheter och nio barn med dyslexi deltog i undersökningen . En tid efter synundersökningen kontaktades förÀdrar för en uppföljningsintervju.Resultat: JÀmförelse mellan grupperna visade ingen skillnad med avseende refraktion. Alla barn som deltog förutom ett, ordinerades korrektion för hyperopi.