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1402 Uppsatser om Hypothesis tests - Sida 18 av 94
Mätverktyg och användartester inom webbdesign : Hur mätningar av ögonrörelser och webbaserade värmekartor kan användas i användartester
This study has researched how user click heatmaps and eye tracking can be utilized in usability testing. We have used the tools SessionCam and Tobii. We designed a website for a small clothing store and conducted usability tests, in order to evaluate the users clicks and eye movements in relation to design choices on the website. The aim of this study was to research how these tools can be integrated in usability testing and how results from the tests can be used to improve usability. We were able to use the recordings of clicks and eye movements and make design changes based on the findings.
Nytta, skada och kostnader vid screening för bröstcancer med mammografi
The efficacy of screening for breast cancer with mammography has been a subject of controversy during the last decades. However, the general opinion is now that screening reduces mortality in breast cancer (Zackrisson, 2006). It is nevertheless important to weigh the efficacy against the harm and costs associated with screening. Cost-utility and cost-effectiveness analysis of screening have generally failed to incorporate side effects such as anxiety and discomfort related to screening tests and the following diagnostic tests (Gyrd-Hansen, 2000). This study seeks to include such side effects in a cost-utility analysis.
Avståndsvarnare till Mobiltelefon
This report describes a study, description and testing of parts to an application adapted to the operating system Android. The application is supposed to measure the distance to a car ahead. Apart from distance measurements the ability of the application to calculate its own speed with the help of GPS is tested. From these two parameters, speed, distance and some constants the theoretical stopping distance of the car will be calculated in order to warn the driver if the car is too close to the car ahead in relation to its own speed and stopping distance.Tests were conducted on the different applications that were programmed and the result showed that the camera technique in the mobile phone itself limits the maximum distance of the distance measurement application. The max distance the tests in this thesis revealed was approximately 5 meters.
Isolerande och skyddande dubbelväv - Produktutveckling av ett kylande fodral
Denna rapport beskriver en produktutvecklingsprocess som behandlar utvecklandet av ett textilt material som isolerar och skyddar. Det textila materialet ska fungera till ett kylande fodral utan att förstöra dess funktion och behöver därför uppfylla en speciell kravspecifikation. Materialet ska isolera mot kroppsvärme, vara stabilt, skyddande och slitstarkt. Dubbelväv valdes tidigt i arbetet då det är ett enkelt sätt att kunna påverka det textila materialets egenskaper i form av material- och konstruktionsval, i en betydligt större utsträckning än i en enkelsidig väv. För att utveckla ett material med de efterfrågade egenskaperna har tester utförs och den metod som har använts är hypotesprövning.
Mind-mindedness och kommunikativ utveckling : Samband mellan moderns mentaliseringsyttranden och barnets senare språkliga och kommunikativa utveckling
Mind-mindedness refers to the mother?s ability to treat her child as an individual with a mental life of his or her own. In the present study, the purpose is to investigate the relationship between the amount of mind-related comments the mother produces when the child is 9 months of age and the child?s development in language and communication at the age of 15 months. The hypothesis is that the amount of mind-related comments the mother produces has a positive affect on the child?s language abilities as well as his or her ability to initiate joint attention.
Motor till unikt luftvärmeväxlarsystem
Gtherm is an innovation company who has an unique air heat exchanger underdevelopment. The purpose of this thesis is to provide data of suitable motors for theheat exchanger and to find suitable motor suppliers.A motor specification was designed. It is an important basis for the search of suitablemotors. A compilation was made of nine motor suppliers and the suitable motorsfrom those. The compilation can be used by GTherm in their choice of suppliers andmotors.The compilation of the demands on the motor and analysis of suppliers indicated thatthere were no standard motors available to GTherms air heat exchanger.
Laboratory tests for sperm quality and fertility in stallions
Syftet med denna litteraturgenomgång var att presentera några av de vanligast förekommandelaboratorietesterna som används idag vid utvärdering av spermakvalité hos hingstar. Engranskning har också gjorts för att försöka utröna om det går att förutse hingstars fertilitetutifrån resultaten av dessa tester. De metoder som presenteras analyserar motilitet, morfologioch funktion hos spermierna i ett ejakulat. För att kunna fullfölja en befruktning krävs det attspermien uppfyller vissa kriterier. Detta för att kunna ta sig fram till äggcellen och smältasamman med denna och bilda ett embryo.
Gymnasieelevers upplevelser av hälsoprojekt : -en kvalitativ intervjustudie
Studies show that children?s and adolescents health decreases, especially the mental health. There are today many health methods that flourish in the school area. Methods that is external and used as individual interventions and methods that have the intention to integrate health in all aspects of the school curriculum.Research on health projects often show what the intervention or method has produced. Few studies have been found who discuss the pupil?s own experience regarding health projects.
Lokal konservering av bok med mögelskador Förstärkning med Klucel® G
The aim of this paper is to make a plan for local treatment with Klucel® G of a book with moulddamage. The biggest problem concerned handling the book without loosing fragments and tohandle pages that were stuck together. In some places as many as six pages where stuck togetherand it was not possible to separate them without loosing material or breaking them. The otherproblem concerned the use of waterbased adhesives that might cause tidelines and paperdistortions as seen in another volume. The use of Klucel® G dissolved in ethylalcohol functionedvery well as strengtheners and also as an adhesive for lamination.
Begreppsbubblor/Visuella representationer i matematikundervisningen : En studie om bemötandets och undervisningens betydelse och möjligheter för elever med koncentrationssvårigheter
The aim is to examine how students with attention difficulties may demonstrate their mathematical understanding through visual representations. A curiosity about how students think about mathematics, national tests and Concepts cartoons has also permeated the study. With help of observations combined with interviews and actively work for a week, the study shows an idea of how visual representations can help students with concentration difficulties to stay focused on their tasks. I chose a selection of pupils to do some mathematical tasks from the national tests which they had not been able to solve before. Now in the form of Concepts cartoons, which I designed, they managed to solve the same mathematics data. In my study treatment and interaction reveals as key pillars for a successful educational work with the students with concentration difficulties. Thus, all pupils who previously have been unable to solve these assignments on the National test were now able to show their mathematical understanding supported by visual representations..
Organisatoriska mellanrum - En övergripande förklaring till ägarlägenhetens dåliga genomslag?
In year 2009, a new housing form (here referred to as "owned apartments", in Swedish called "ägarlägenheter") was introduced in Sweden. Owned apartments are in many countries the dominating form of housing tenure, but in Stockholm, to where this thesis is delimited, only four have been established in four years. There are many possible reasons for this low establishment, but the thesis writers believe the main reason to be that the owned apartment is situated in an organizational gap. With the hypothesis that the owned apartment is situated in an organizational gap and that there are opportunities to overcome this gap through interorganizational collaboration of the players on the market, this thesis strives towards examining if this is the case.By using Burt's theory of structural holes the concept of organizational gaps are elaborated to fit this context, since this area is previously unexplored.The data has mainly been gathered through in-depth interviews but also through secondary sources such as previous theses and newspaper articles. It has appeared that the majority of the central players are characterized by conservatism.
Polyfona positioner i pendlande praktik
The purpose of this study is to contribute to our knowledge about what methods? teachers say they use in the work with pupils? early reading acquisition, and how they evaluate the pupils´ reading development. I also like to find out what educational interventions teachers believe that pupils with reading difficulties need, and how they say they work to meet the needs of these pupils. The project is based on the following questions: What methods do teachers say they use in the work with pupils early reading acquisition? What extra resources do teachers consider that pupils with reading difficulties need? How do teachers evaluate children's reading development? In order to answer my questions, I've done qualitative interviews with three teachers, at two schools, in two medium-sized municipalities.
Konstruktion av testrigg för moderna ångexpandrar
This report summarize what have been done during the Master of Science Thesis that Klas Schjelderup has written for the company RANOTOR Utvecklings AB. The company is developing modern steam engines and this work should develop a machine to perform tests on a new type of piston seal that hopefully could be used in the future. The steam engines will be both volumetric and energy compact, around 1600hp/literof cylinder volume, and it will have a lot of practical applications.The new type of piston seal is hydrostatic lubricated which means that a fluid is separating two faces that normally is in contact. In this case pressurized water is used to separate the piston seal from the cylinder wall. RANOTOR have earlier formulated that at least the expander in the modern steam engine have to be oil-free, due to other components functionality in the closed water system.
Sponsor or Die - En studie om imageöverföring vid mindre events
Studies conducted on event marketing have mainly focused on larger events. Managerial implications, marketing techniques, and theories in the field have hence dominantly addressed events of larger nature. Event marketing however is a growing phenomenon in the marketing mix. Brands are using event marketing to a greater extent. Brands are increasingly using small events as a marketing tool in order to create brand awareness and brand image; this goes for both small brands and large brands.
Tid kontra pengar - Goal-gradient effekt vid valet mellan nettonuvärdesmetoden och återbetalningsregeln
Syftet med denna uppsats var att studera om det finns en målgradient vid
investeringsbedömning som medför en preferens för alternativ med kort
återbetalningstid och snabba belöningar.
Vi valde att genomföra denna studie med hjälp av en kvantitativ ansats, då vi
genomförde ett experiment med studenter vid Blekinge Tekniska Högskola. Detta
motiverar vi med att utifrån vårt syfte och vår teoretiska referensram, ger det
oss störst möjlighet att generera ett intressant och relevant resultat.
Vårt resultat visar tydligt att beslutsfattare föredrar att använda
återbetalningsregeln före nettonuvärdesmetoden i en beslutssituation, och
därmed ett fokus på tidsaspekten och när en investering är återbetald. 81 % av
våra respondenter valde tidsalternativet i minst ett av de två casen.