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4044 Uppsatser om Hypothesis testing and t-test - Sida 19 av 270
Nationellt varumärkesbyggande : En studie om hur Botswana kan använda sig av nationellt varumärkesbyggande i landets utvecklingsprocess
In this paper I study how the repeal of the Swedish wealth tax (1 of January 2007) has affected people´s labour supply behaviour. This particular issue is relevant because it may help us understand some of the effects of the earnings tax changes that have taken place in Sweden. Accoring to standard economic theory a repealed wealth tax is similar to an income effect for the persons who previously paid the tax. That means that they theoretically will want to consume more leisure, that is decrease their labour supply. The method I am using to test this hypothesis is a difference-in-difference approach where the treatment group consists of persons who previously paid the tax and the control group of comparable persons who did not pay the tax.
Självbedömning i förhållande till uppnått resultat : Nationella prov och processbarhetsanalys på sfi
The aim of this essay is to investigate which of the goals in the syllabus, and with that what knowledge of Swedish, four students taking the SFI (Swedish for Immigrants) level 3 course believed themselves to have attained and to compare their self-assessments with their results on the National Test of Swedish for adult immigrants.The method used for the investigation is the individual interview. In addition to taking the National Test, the participants in the investigation were asked to mark the goals they believe themselves to have attained.The results show that the informants who best demonstrated awareness of their own knowledge are able to talk freely about their knowledge and difficulties, and when they mark the goals they believe they have attained, these correspond, on the whole, to how they responded in the interviews.One of the informants finds it more difficult than the others to assess her knowledge. A comparison between her experiences and the National Test results revealed several inconsistencies. For example, she claims that she can communicate in Swedish, but still she didn?t pass the test..
Företagsrekonstruktion : I de finansiella nyckeltalens perspektiv
Year 1996 a new law was introduced in Sweden, the law of corporate restructuring, what purpose was to help companies in financial distress. Now, nine years later the procedure hasn?t been successful. This is what this thesis is trying to find out.This thesis main question is: What distinguishes the companies that have filed for a corporate restructuring, according to the financial position?The purpose of this thesis is to find out if key ratios can be used to distinguish the companies that filed for corporate restructuring.
Utvärdering av olika diagnostiska metoder för infektioner med bovint coronavirus hos nötkreatur :
This paper shortly describes the coronavirus family, bovine corona viruses (BCV)
properties and two diseases that BCV causes, winter dysentery and calf diarrhoea.
The purpose of the study was to compare different diagnostic methods to detect
BCV. Different methods are discussed, PCR, ELISA, immunofluorescense and
virus isolation.
Investigations were made in three different herds with winter dysentery; one dairy
cattle farm with about 100 cows of different ages, one testing station for bulls with
about 150 bulls and another small dairy cattle farm with 26 cows and 20
replacement heifers and calves. Faeces and nasal swabs were analysed with PCR
and ELISA.
The result shows that PCR seems to be a reliable method for detecting BCV but
that the ELISA test can not be used as a reliable diagnostic method to analyse
samples from animals with winter dysentery..
Laktester för riskbedömning av förorenad mark :
Using leaching test is a way to get a picture of pollutants retention and leaching in a risk assessment on contaminated land. There are several different types of standardised leaching tests today, where the natural leaching processes are speeded up to make it possible to predict the leaching of pollutants. These leaching tests have been developed for waste and there are no specific guidelines on how to judge the results from the tests, when making a risk assessment on contaminated land. This work is an investigation on how to use leaching test in this type of risk assessments. The strengths and weaknesses of the different types of tests are discussed.
Depending on what type of information you want from your leaching test, different types of tests are suitable.
Vem är ett barn? En kritisk idéanalys av Barnkonventionen
Nearly half of the worlds population is individuals under the age of eighteen. The UN Convention on the Rights of the Child state in its first article that a child is ?every human being below the age of 18 years?. Our aim and purpose with this essay is to problemize this broad definition. Our hypothesis is that the definition brought by the UN Convention on the Rights of the Child is too wide and therefore brings difficulties when children of different ages beneath eighteen should and shall be treated the same.
Förekomst av penicillinkänslighet hos blododlingsisolat av Staphylococcus aureus
Staphylococcus aureus is the most clinically important Staphylococcus species and is associated with high mortality in patients with positive blood cultures. S. aureus bacteria may cause a variety of disease manifestations ranging from minor skin infections to life-threatening conditions such as pneumonia, meningitis, osteomyelitis, endocarditis, toxic shock syndrome (TSS) and sepsis. This microorganism belonging to the gram positive cocci may also be part of the normal flora. In Sweden, penicillinase-stable penicillins are the primary alternatives to treat S.
Employer Branding : Medias påverkan på Vattenfalls arbetsgivarvarumärke
Title:Employer Branding ? Medias Influence on Vattenfall?s Employer Brand (Employer Branding ? Medias påverkan på Vattenfalls arbetsgivarvarumärke) Purpose/Aim:The aim of this study is to examine how a negative media image influences the Employer Brand of the Swedish company Vattenfall. First of all I will examine if Vattenfall have a strong Employer Brand and then if the media image have any influence over the Employer Brand. My hypothesis is that Vattenfall?s Corporate Culture is a big part of the Employer Brand and because of that negative media images has no power to influence on Vattenfall?s Employer Brand.
Utvärdering och jämförelse av olika fälttester för fotbollsspelare
Different field tests are currently used in a wide extent in different levels of soccer teams. To be able to assess the players? physiological status the tests must have high validity, reliability and external validity. Many different tests have been developt, but currently only five of these tests are most commonly used: Yo-Yo intermittent recovery test (YIRT), Yo-Yo intermittent endurance test (YIET), Multi-sprint-test, Beep-test and Cooper-test. Presently there is no definitive conclusion regarding which of these tests is most suitable for soccer players.
Jaktprov hos brittiska stående fågelhundar
In 1996 a hunting test for British gun dogs was started in Sweden, based on a similar one al-ready in place in Norway. The aim of the new test was to describe the hunting ability of the dog and to use the results as a basis for selection. However, up to now, no genetic study of these data has been done. Therefore the aim of this study was to estimate genetic parameters for the traits measured in the hunting test and to investigate whether the traits can summarized into fewer overall measures.
Data from trails of British gundogs between 1996 and 2005 in Sweden were used to estimate genetic parameters and environmental effects in hunting performance. British gundogs consist of five different breeds: Pointer, English setter (ES), Gordon setter (GS), Irish red setter (Irl S) and Irish red and white setter.
Automatiserad unit testning
Dagens utveckling av mjukvara går snabbare och snabbare
samtidigt som mjukvaran blir allt mer komplex. Att under dessa
omständigheter kunna bibehålla en lika om inte högre kodkvalité
är en utmaning. På UIQ bestämde de sig för att undersöka om ett
automatiserat unit test kunde hjälpa dem.
Metoderna för att komma fram till resultaten i denna rapport har
varit intervjuer, en enkät, intern information och litteratur så som
forskningsartiklar m.m.
Denna rapport är en utredning av automatiserade test, vad man
bör tänka på, vilka fördelarna är, vilka testfall som är möjliga att
automatisera med mera. Rapporten kommer även att presentera
grunderna i testning av mjukvara, en introduktion till eXtreme
Programming och Test-Driven Development samt hur testningen
utförs på UIQ idag.
Då jag kom fram till att ett automatiserat unit test skulle passa sig
bra på UIQ kommer jag i slutet av denna rapport presentera ett
implementerings förslag. Man bör även införa en test driven
utvecklings metodik för att säkerhetsställa att det kommer att
utvecklas automatiserade testfall..
En studie av hållbara alternativ till odlingstorv : - vid jordförbättring inom trädgård
Pharmaceuticals are environmental pollutants that are a major threat to aquatic ecosystems and very little is known about their ecological consequences. In this study growth, survival and behaviour (sociability, activity and boldness) of perch fry (Perca fluviatilis) were examined in order to study the possible effects of exposure to a benzodiazepine anxiolytic drug, Oxazepam, during embryonic development. The study tested following hypotheses: (1) perch growth is affected positively by exposure during embryonic development; (2) early perch survival is affected positively by exposure during embryonic development; and (3) boldness and activity increases while sociability decreases in perch fry exposed during embryonic development. Embryos of naturally spawned perch were exposed to water with two different concentrations of Oxazepam. The embryos were exposed during different parts (24-hour periods) of the embryonic development, because embryos may be more vulnerable at certain times during embryonic development and/or because the exposure at different times can produce different effects.
E-tjänster i kommunala verksamheter : Risker och hot för e-tjänster i Ljungby kommun
The existence for companies today consists of constant challenges with customers that want more individual products with high quality as quickly as possible. For a company to be able to have a short delivery time, it must also have a short production time. This makes streamlining and improvement of processes a big part of a company?s workThis thesis has been carried out together with the company Lasermax Roll Systems AB, a world-leading manufacturer of feeding, finishing and monitoring systems for high-speed digital printers. They manufacture their products according to the assembling for costumer order principle.The purpose with this thesis is to map and analyze, the assembling process and the test process at Lasermax Roll Systems AB.
Mätning av Mikroläckage i Dentala Implantat
Osseointegrated titanium implants have become a commonly used method in edentulous jaws and today there are success rates in the magnitude of 82 % in the lower jaw and 98 % in the upper. During first year after implantation a fully normal marginal bone loss of 1-2 mm occurs. If the bone loss continues there is a risk of implant failure. High tensions in bone and inflammation caused by bacteria are possible reasons for this problem. It has been shown that a leakage of bacterias occurs between the parts of the implant and there are theories that this has effects on the marginal bone loss.
The aim of this thesis has been to increase the knowledge about microbial leakage with help of in vitro tests and virtual simulations.
Yrkeselevers svenskkunskaper 1977 och 2014 : En studie av två elevgruppers resultat på ett centralprov
The aim of this study is to investigate how the Swedish language proficiency of pupils in vocational programmes in 1977 was measured and assessed with the aid of a national achievement test, and to investigate whether vocational pupils today, in 2014, have similar language proficiency to that of pupils in the 1970s. The study also discusses how the design of the national achievement test from 1977 reflects the view of knowledge that prevailed in society and in the policy documents. The material for the study consists of a total of 75 national achievement tests, 40 of which were taken by pupils on a vocational programme in 1977 and 35 by pupils on a vocational programme in 2014. The national achievement test consists of two parts, the first of which focuses on isolated elements of language proficiency, while the second involves free text production. The material was analysed quantitatively in accordance with the correction material from 1977.