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1402 Uppsatser om Hypothesis tests - Sida 47 av 94

Development of new food products with components active against Helicobacter pylori - with purpose to improve gastric health in humans

Gastric and intestinal disorders are common and costly human health problems worldwide. Helicobacter pylori are a gram-negative, pathogen bacteria and the most common cause of duodenal and gastric ulcer in the stomach the intestinal mucosa. Prolonged infection and colonization can lead to chronic gastritis and stomach cancer. H. pylori are present in the gastric and intestinal mucosa of half of the world population and a relation between infection and low socioeconomic status has been shown.

Sambandet mellan revisionskvalitet och längden på revisionsuppdraget : empirisk undersökning av Going Concern varning

That an auditor brings good quality to the work he is performing is of great importance, not only for the company in question but also for its stakeholders. The information that the company disclose gets more credibility because of the auditor quality assurance. That the auditor tenure would affect the quality has been researched with different results, dependent on the legislation in the current country or region. In this paper we study how audit quality is affected of the audit tenure in Sweden. Based on research made in Belgium we have formulated hypothesis with factors that can affect the audit quality.

Good cop - bad cop? : - en jämförelse i ilska och aggression hos polisstudenter och universitetsstudenter

The main purpose of this study was to compare the levels of anger and aggression between male and female Police Academy students (N=106) and male university students (N=100), using 2 psychometric anger instruments; Novaco Anger Scale-1998-S (NAS-1998-S) and Aggression Questionnaire-S (AQ-S). Another aim was to examine if there was a difference in anger and aggression between male and female Police Academy students. Questionnaires were handed out to Police Academy students in Växjö and the result was compared to university students from a previous study by Lindqvist, Dåderman & Hellström (2003). Analyses using a series of Independent sample t-tests showed a significantly lower level of anger and aggression in the Police Academy sample. There were no significant difference in anger and aggression between males and females with the exception of two subscales of the NAS-1998-S and AQ-S; females scored significantly higher on NAS Arousal and males scored significantly higher on AQ Physical aggression..

Media and the priming of stereotypes: Direct effect of news articles racial stereotypes on individuals judgements of people of foreign extraction.

The present research examined both automatic and controlled processes in newpapers ability of priming racial stereotypes via the portrayals of people of foreign extraction. The automatic process were examined through articles which; a) involved an illegal act or b) the act was not illegal but morally questionable. Swedish-born subject?s explicit opinions against foreign people were also measured through ?The Modern Racial Prejudice Scale?. In the experiment participants read four different articles which included; Swedish person/noncrime, foreign person/noncrime, Swedish person/crime and foreign person/crime.

En studie om vilkenundervisningsmetod som ger störst inlärningseffekt hos barn : En jämförelse av kunskapstest före respektive efter undervisning

The aim of this thesis is to study the teaching methods that provide the greatest learning effect for children in grades 6 in the subject of physics. One class was divided into three equal groups, each group was educated in a specific way. The three teaching methods that have been investigated are: film with reflection, laboratory work and traditional lecture- teaching. The research question of the study is: "Which method of three selected, causes the greatest understanding of the properties of air??.

Reglering av veka strukturer med multipla sensorer

In this master thesis, control algoritms using arm side sensors are investigated for an industrial robot. The sensors can be position encoders placed after the gearbox and accelerometers on the robot arms. Control strategies are discussed and evaluated for different models of the robot, after which chosen strategies are applied to a realistic model. Control algoritms using arm side sensors (LQ, dual-loop and PD-PID) are compared to a PID-controller that only uses measurements of motor position for feedback control. The comparison are done with respect to disturbance rejection, oscillation damping, robustness and tracking performance of a reference trajectory.

Junilistan i europaparlamentsvalet 2004 : Ett mediedrama i tre akter

AbstractTitle: The Junilistan in the elections of the European Parliament in 2004 A media drama in three actsNumber of pages: 42Author: Kristiina RuutiTutor: Amelie HössjerCourse: Media and Communication Studies CUniversity: Division of Media and Communication, Department of Information Science, Uppsala UniversityDate of submission: 2007-01-13, autumn term of 2006Purpose/Aim:The purpose of the essay is to examine the media coverage of the Swedish Junilistan in the elections of the European Parliament in Sweden 2004. My hypothesis is that the media coverage of the political party Junilistan was a media drama with elements of classical dramaturge.Material/Method:Qualitative content analyses of four Swedish newspapers from a narratological perspective.Main results:The media coverage of the political party Junilistan was a media drama with elements of classical dramaturge. The coverage became a drama with three acts. Diverse actors with different projects could be identified from the articles.Keywords:Narrative, election journalism, classic drama, mediadrama, actant, European parliament.

FPGA baserad PWM-styrning av BLDC-motorer

This thesis work contains a litterature study about electrical motors in general and how PWM-patterns for brushless DC-motors can be made. A suitable method has been implemented as a simulation model in VHDL. A simulation model of a brushless DC-motor which describes the phasecurrents, torque and angular velocity has also been made. The motor model made simulations easier for the complete PWM-system. The design was synthesised and tested with a prototypeboard including a SPARTAN II FPGA.

Operatörsoberoende SMS-leverans med designmönstret Bridge

When different type of programs are developed one wants to make these adjustable to future changes and requirements. It must be done a good design of the program from the beginning to make it possible to continue development of it without having to redo big parts of it to high costs. In the area of object orientation there are design pattern, which can be used to design systems that can be adjusted to new changes in an easier way. I have in this thesis chosen to take a closer look at how to design a program that sends SMS to cell phones through a system of an operator. One requirement on the program is that it has to be possible to change what operator to send though in an easy way.

eWOM: Kundrecensioners påverkan på konsumenter utifrån Regulatory Focus-teorin

This study examines the eWOM effect, more specifically: how customer reviews effects consumers. The study is based on a modified version of the Regulatory Focus Theory which describes consumer behavior using consumer consumption goals. The purpose of this study was to examine how positive and negative customer review's influence consumers when analyzing products that are equally characterized by two consumption goals: promotion and prevention goals. The authors combined quantitative (questionnaire) and qualitative (focus groups) research methods with the sample selection for both research methods being based on students of Södertörns University. Results indicate that negative customer reviews have a stronger influence on consumers than positive customer reviews when analyzing products that are equally characterized by the promotion goals and prevention goals.

Revisorn och penningtvätt : - En studie om hur revisorer tillämpar lagen om penningtvätt

AbstractTitle: Accounting and money laundering, a study on how auditors apply the law on money launderingDate:  May 29th 2013University: Mälardalens UniversityInstitution: School of economy, society and technologyLevel: Bachelor thesis in business economy, 15 creditsAuthors: Pavle Adasevic 910731 Oskar Hallberg 900508Advisor: Kent TrosanderKeywords: Money laundering, Law of money laundering, Auditor, ABLThe main issue:In 2009 a new law on money laundering was introduced. The new law aims to strengthen the monitoring and reporting of money laundering. In 2011 11,464 reported suspicions of money laundering, only four of them where from audits, how come there so few reports from the auditors?Purpose: The Purpose of the study is to show how audits apply the new money laundering law in their work.Method: The study was based upon qualitative method. Secondary data was taken from literature, articles and reports.

Studenters attityder till arbetsmarknad och lön

This essay examines whether feminist theory can give a plausible answer to the question: does female and male students have different attitudes towards the labour market and towards wages? Further more, I examine if factors such as class and ethnicity affect student's attitudes. These questions are investigated through a quantitative study of students at four educations on two different universities in Sweden. Two of the educations have a high degree of female students, and the other two represent educations with at high degree of male students.The main conclusion is based on the quantitative research results. Female and male student's attitudes are similar in some cases.

Simulator för el- och värmeproduktion : påverkan på ekonomi och miljö

In this project a simulator has been developed (in C++) with the purpose of illustrating how changes in environmental regulations, tax levels and other policy measures affect the composition of an energy system. The aim of the project was to investigate how energy companies? investment strategies are affected when changes in economic and environmental conditions occur. A standard scenario has been created based on current Swedish conditions, but the user can create new scenarios and set parameters freely. The user is tasked with building power plants to supply the city/region with district heating and electricity during a pre-set number of years. When the simulation is finished the result is graded in the following categories: economy, environment and quality. To evaluate the simulator three scenarios were created (?early 20th century?, ?reduced environmental control? and ?future?) in addition to the standard scenario and these were compared with each other by examining how a select group of power plants perform under the given conditions.

Human Resource Management : En korrelationsstudie om upplevt organisationsstöd och psykologiska kontrakt.

The relationship between employer and employee is, from a judicial point of view, governed primarily by economic and employment contracts. However, a significant part of the dynamic is also dictated by tacit expectations and promises (so called psychological contracts). The aim of this study was to investigate the relationship between perceived organizational support (POS) and psychological contract violation. Primary hypothesis assumed that there was a correlation between higher perceived organizational support and a reduction of feelings of violation from psychological contract breach. It was also assumed that employment time, sex and past breach experiences correlated with feelings of violation.

Möjlig efterträdare till skolflygplan SK 60

The SK 60 Aircraft has been a workhorse for the Air Force?s training of future pilots since the late 1960s. The aging SK60 aircraft is going out of style, and the system has merely a few years of total running time left. A replacement for the SK 60 needs to be implemented in the coming years, and the Armes Forces Flying School has been commissioned to conduct flight tests on suitable replacement systems. This study will conduct a system analysis of two aircrafts mentioned in the Flying Schools report.

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