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4044 Uppsatser om Hypothesis testing and t-test - Sida 31 av 270
Hjärtfrekvens och kortisolkoncentration hos valpar under olika typer av valptest :
The aim of this study was to find possible relations between behaviour and physiology for puppies during different parts of a puppy test. This work deals mainly with the physiological part of the study. Thirtysix puppies, från five litters, were tested in a behaviour test where heart rate was measured and saliva samples were collected before and after each part in the test. Saliva and urine samples were analyzed for corisol concentration as an indicatior of stress. The tests were performed during two consecutive days in the breeders' home when the puppies were seven weeks old.
In addition, heart rate and cortisol levels were also measured in the bitch since we were interested in finding out if there were any relations between physiological levels in bitches and puppies.
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.
Verbbenämning hos svenska barn i åldern 3;6 till 5;5 år : En studie av prestation på Action Naming Test
Verbbenämning innebär förmågan att benämna en bild utifrån den aktivitet som bilden illustrerar. I tidigare studier har det visat sig att barn tidigt i språkutvecklingen har svårare för verbbenämning än substantivbenämning (Gentner, 1982; Kauschke, Lee & Pae, 2007). Detta förklaras delvis av att verb är mer lingvistiskt komplexa än vad som är fallet för substantiv (Gentner & Boroditsky, 2001), samt att de är svårare att illustrera (Masterson, Druks & Gallienne, 2008). För att undersöka benämningsförmåga används oftast bildbenämningstest och för verb saknas ett svenskt test för barn. Föreliggande studie syftade till att undersöka verbbenämningsförmågan hos svenska barn samt att utröna om den svenska översättningen av Action Naming Test (ANT) är tillämplig på svenska barn.
Ger en kvinnlig CFO högre redovisningskvalitet?
The executives of a firm possess considerable influence over a company's financial reports. The numbers can be adjusted in a favorable direction by engaging in Earnings Management, which harms the reliability of the financial reporting. Previous research suggests that Earnings Management can differ between genders. In recent years the debate about a woman's role in the business world has received generous attention in media. Moreover, the presence of women in leading positions has become a relevant issue for firms.
Testarbetets svåra val
När det talas om test pratas det på ett sätt som om det vore ett nytt fenomen, men i själva verket kan rötterna spåras tillbaks till 1978. Det är först på senare år som test har börjat etablera sig mer och mer och nyttan med test bland systemutvecklingsorganisationer respektive testorganisationer. Människan omges ständigt av information vare sig det är av elektronisk, fysiskt eller annan form. Det är därför inte så konstigt att tidsåldern människan befinner sig i kallas för ?informationsåldern?.
Kontext, utvärdering och användarupplevelse : En studie om kontextens påverkan på användarnas respons vid utvärdering av användarupplevelse
In this paper we explore the relations between context and feedback generated in three user-centered evaluations of a flash-based game. Whether it?s the social context, the physical context or the degree of intrusion from the evaluator, they all contribute to the quality of the feedback received. The selection of test subjects is a narrow process, which gives the above mentioned factors different meaning. Contextual factors have shown to influence the feedback given within both usability and user-experience.
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.
En simuleringsstudie för test baserade på Maximum Likelihood- och Maximum Spacingskattningar
Om vi har ett stickprov med X1, X2, ..., Xn oberoende lika fördelade observationer från en kontinuerlig fördelning med fördelningsfunktion F?, där ? är en okänd parameter, är Likelihoodkvottestet (LT) ofta en bra metod för att testa nollhypotesen H0: ? = ?0 mot HA: ?? ?0. För vissa typer av fördelningar saknar dock Likelihoodfunktionen övre begränsning (Ranneby, 1984) och (Ekström, 2013) vilket innebär att testet inte går att tillämpa då. Detta test jämförs med två nyare test, Ekströmtestet (ET) (Ekström, 2013) och Fidelitytestet (FT) som är ett modierat ET, som vi vet fungerar även i dylika fall. Under vissa generella villkor så vet vi att de tre testen är asymptotiskt ekvivalenta.
Kontextmedvetenhet som ett sätt att reducera Information Overload : Designriktlinjer för kontextmedvetna smartphone-applikationer
The main topic of this thesis is to evaluate the impact on the usability of web pages when using responsive web design, a concept for developing web pages whose design adapts to the screen size being used. This is done by creating a responsive prototype based on an existing web site. A number of usability tests are conducted on the two versions of the site in order to compare the time to complete the tests and to observe the behaviour of the test participants. The tests are conducted on desktop as well as on mobile devices with varying screen size.The number of test participants was relatively low, and so the quantitative result is not statistically valid. However, the conclusion is that the most effective combination is to use either of the sites on desktop format.
PSQS ? Power Supply Quality Simulator
Kitron had wishes to be able to test and measure how disturbance affects their vehicle electronic units before they have been verified by SP Technical Research Institute of Sweden in Borås. This work started with the writing of a demand specification together with Kitron for a product PSQS, Power Supply Quality Simulator, which can generate some test pulses according to a standard for electronic units to Volvos vehicles. A design proposal was developed with the help the demand specification and was verified with the help of simulations. All electric schematics was designed with the guide of the design proposal. The pulses realized in the works of this thesis are those which Kitron experienced that they have a need to test in their own premises and which are possible to generate with the means available.
Betydelsen av tidig hantering av nyanlända försökshundar till en försöksdjursavdelning :
AstraZeneca in Mölndal (AZRDM) uses beagles bred at Rååhöjdens kennel in Örkelljunga for their research purposes. The staff wishes to have mentally stable dogs to work with, sine stress can effect the research results.
The purpose of this study was to put together the testresults from dogs delivered 2003 and 2004, to see if there is a connection between delivery age and testresult. We have also worked out a method to test if early planned handling of the dogs makes a difference on how the dogs later respond in a testsituation, and tried this method in a pilotstudy.
The data that we have based our calculations on is 172 dogs, divided into 108 males and 64 females.
We found a significant connection between the age at delivery and the testresult in contactability for female dogs delivered in 2003, where increasing age led to decreasing grades in the test at AZRDM. When looking at the difference in testresults between test number two at the kennel and the test at AZRDM we found a significant connection for female dogs delivered during 2003, ie the difference takes on a more negative value with increasing age at delivery.
We found a difference between the two sexes in our calculations.
Guanxi och familjeföretag : En uppsats kring förutsättningar för entreprenörskap i Taiwan
This thesis aims to examine the conditions for entrepreneurship in Taiwan by the occurrence of cultural phenomenon guanxi. Based on the concept of familiness and guanxi, the family is central in this study of family business. Traditional descriptions of the Asian culture claim that guanxi is vital in the business context. Though, recent studies indicate that significance of guanxi seems to be changing. Therefore the purpose of this thesis is to create an understanding of the importance and relevance of guanxi in the context of Taiwanese family business.By travelling to Kaohsiung, Taiwan to interview six managers of Taiwanese family firms this study?s empirical material was gathered for further processing based on a qualitative approach.
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.
Livet efter sfi : Vilka tankar har några sfi-elever om sin delaktighet i det nya landet och hur har de lyckats med att förverkliga uppsatta mål?
Boplatsvallar, often translated as semi-subterranean settlements, is an ancient monument with a diffuse definition. Defined as ?embankments that partially or completely surround a often lowered/dug down surface- this category of ancient monuments is also made up of a former category which traditionally was interpreted as winter settlements from the late Stone age in Sweden. This view of the ancient monuments carried over, to a certain extent, to this new definition. Should this be the case, that this category of ancient monuments are remains of winter settlements, used recurringly over an extended period of time, then they should exhibit similar signals in regards to the distribution of the anthropogenically altered soil chemical and soil physical properties at the sites.The area around Lillsjön, Anundsjö parish in Ångermanland, have four boplatsvallar located separately in the regional area.
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.