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614 Uppsatser om Psychometric properties - Sida 32 av 41
Stormskador i lärk och gran : en jämförelse efter stormen Gudrun
The storm Gudrun January 8-9 2005 felled about 70 millions cubic metres forest in southern Sweden. The majority of the wind damaged forest was spruce (Picea abies). In order to decrease the risk of wind damages in the future other trees species are of interest for forestry in southern Sweden.
The purpose of this master thesis was to study if larch were more wind tolerant than spruce. The method was to compare larch, Japanese larch (Larix kaempferi Lamb.), European larch (L.
Fem-studie av rörelser i planet mellan bakaxelbrygga ADA1100 och centralväxelhuslock R780
This thesis has been performed at Scania CV AB Technical Centre in Södertälje and its aim hasbeen to study the causes and effects of deformations in the interface between the rear axlehousing ADA1100 and the central gear house R780 during operation. Design changes that wouldincrease the sealing capability of the studied interface are also suggested. Finite element (FE)and CAD software have been the primary tools in this study.Finite element (FE) simulations are used in the industry to predict and develop engineeringdesigns. The main motive for FE simulations has traditionally been to identify weak spots in thedesign, regarding high tensions and large deformations.The FE model is an aggregation of submodels and interface models that represents the rear axlehousing, suspension, central gear, central gear housing, wheels, bolts and weldings, and theirinteractions. The submodels have different material properties and they are connected withcontact interface models.Boundary conditions are defined on the bushings in front of the rear axle and on the air bellowsbehind the rear axle.
Bäddodling av matpotatis :
This study investigated potato growing in beds as an alternative to conventional ridges.It was based on results from field trials on bed-grown potatoes carried out by Halland Rural Economy and Agricultural Society in 2007, studies of literature and interviews with farmers with experience of bed growing of potatoes.
Due to their shallow root system, potatoes are one of the most drought-sensitive crops. Potatoes are often grown on sandy soils with poor water-holding capacity. Factors such as total yield, tuber size distribution and quality defects are negatively affected when water becomes insufficient. Wide beds have a more flat top which leads to more uniform water infiltration. Further on, beds have lower soil surface area due to its shape, and therefore, retain water more efficient.
In the field trials, which were carried out at the Stjärnarp Estate near Halmstad, potatoes were grown in beds alongside a conventional ridge-grown crop.
Provtagning av trädkärnor för att bedöma föroreningsgraden av klorerade lösningsmedel i grundvatten
Chlorinated aliphatic hydrocarbons (CAH´s) were used widely within dry cleaning facilities and for metal degreasing until their toxicity was discovered. PCE is still used as dry cleaning liquid. Today CAH´s are found in soil environment at places where they have been used in the past. The CAH-concentration in trees growing on contaminated land has quite recently received attention as a cheap and effective way of assessing the extent of a CAH-contamination. The method has however, not been put into use in Sweden.The aim of the study has been to investigate whether the CAH-concentration in tree cores could be used to delineate the spread of CAH in a soil environment under Swedish conditions in different seasons.
Textil halksula
De senaste årens långa och kalla vintrar har lett till ett ökat antal halkolyckor. Genom att undersöka halkolyckors utsträckning samt halkskydd som fanns tillgängliga konstaterades det att ett behov av nya halkskydd fanns. Enkäter för att ge svar på användning av halkskydd togs fram och svar från personer i åldrarna 20-65 visade att man överlag inte använde halkskydd. I stor utsträckning berodde det på halkskyddens dåliga kvalité och den negativa stämpeln som fanns på dem . Textila material undersöktes för att finna lämpliga egenskaper.
?Killar skriver inte puttinuttigt? : En experimentell studie av genusföreställningar i textbedömningar
This thesis examines conceptions of gender revealed by people when assessing texts. The research questions are: What associations can be discerned between gender conceptions and ideas about the quality of texts? What features of content and style are perceived as female or male? The study seeks to develop a method for comparing different people?s assessments of the same text. The material was collected by means of questionnaires in which 114 informants were asked to assess three anonymous student texts and then guess the sex of the writer. The material has been analysed quantitatively by correlating the assessments of the texts with the guesses about the sex of the author, and qualitatively, as the informants? freely worded assessments of the texts were analysed for content and form with the support of assumptions about how assessments are expressed in text.
Berättelsens labyrinter : Interaktiv fiktion och dess narrativa aspekter
This essay examines the narrative aspect of interactive fiction. The study uses Janet H. Murrays analysis of the digital environment and the properties of it as procedural, participatory, spatial and encyclopedic. From this, her three characteristic pleasures in digital narratives - immersion, agency and transformation - are examined from the perspective of interactive fiction. The study also examines Nick Montforts analysis of interactive fiction as a potential narrative and a simulated world or environment.
Hälsofrämjande egenskaper av djurassisterad omvårdnad : En litteraturöversikt
Background: Animals are used in several health care areas and have been shown to promote many aspects of patients? health. Animals have potential for use in nurses? health promotion work. Nurses need a deeper understanding of the importance and health-promoting properties of animal-assisted therapy.Aim: The aim was to describe the importance of animal assisted therapy for patients? health.Methods: A literature review was conducted based on ten nursing science studies with both qualitative and quantitative approaches, which were selected after critical review.
Wavelettransform med Morletwavelets för analys av satellitmätdata
This thesis is divided into two parts. Part one contains a general description of the flexographic printingtechnique. Part two contains a more detailed investigation in the areas substrate, inktransfer and trends, which are only briefly commented in part one, and conclusions and comments.The major problem concerning substrate is washboard. This phenomena can be limited if one can control and minimize the amount of glue applied in the single- and double facer, use high surface weight on liner, use low surfaceweight on fluting and control the humidity during the conditioning of the corrugated board. Corrugated board with a smooth surface radically increases the quality in print.
Magnetfältssignaturer från Birkelands- och jonosfärsströmmar
This thesis is divided into two parts. Part one contains a general description of the flexographic printingtechnique. Part two contains a more detailed investigation in the areas substrate, inktransfer and trends, which are only briefly commented in part one, and conclusions and comments.The major problem concerning substrate is washboard. This phenomena can be limited if one can control and minimize the amount of glue applied in the single- and double facer, use high surface weight on liner, use low surfaceweight on fluting and control the humidity during the conditioning of the corrugated board. Corrugated board with a smooth surface radically increases the quality in print.
Kan företag kontrollera sitt varumärke online? : En kvalitativ studie om villkoren fo?r marknadskommunikation i sociala medier
Purpose: This study aims to investigate the conditions that prevail when companies put their marketing in social media with the purpose of creating a perception of the risks and opportunities it brings to businesses and ultimately how it may affect the corporate image and identity.Theories: The basis of the problem area are presented through a theoretical framework with the purpose of highlighting the notions of social media, communi- cation, marketing communication, groundswell, corporate identity and image.Methodology: To investigate the research questions this study adopted a qualitative approach in which the authors study the properties of a phenomenon in order to seek a deeper understanding of the problems we have presented. There is an exploratory approach to knowledge and the authors have chosen to conduct qualitative research interviews based upon three themes: driving forces, challenges and impacts.Conclusion: The study revealed that traditional models of communication are no longer applicable in social media. Companies are up for a challenge and must clarify their sole purpose when establishing communication in the social landscape. The general motivation for marketing in social media is making profit, however, building relationships is not a natural motive for most companies. The risks companies expe- rience is the exposure caused by social media and the study also reveals that this fear is firmly attached to their lack of knowledge of these new channels of communicat- ion and their primary areas of use which indicates that skilled employees plays a vi- tal role with their use of social media in their communication process.
Mervärde ur ett konsumentperspektiv : Vilka faktorer är viktiga för att skapa mervärde till tekniska konsumentprodukter?
World wide globalization and the rapid development of the Internet have lead to significant changes for companies around the world. The world has ?shrunk? and increased supply of goods and services has lead to a more intense competitive situation. As the market changes, so does consumer behavior. Today?s consumers do no longer wish to be treated as a group, rather they are looking for products and services that specifically fit their personal values.Recent years, the consumption of digital consumer electronics has sky-rocketed.
Modell för beräkning av inläckning till avloppsnät
This thesis is divided into two parts. Part one contains a general description of the flexographic printingtechnique. Part two contains a more detailed investigation in the areas substrate, inktransfer and trends, which are only briefly commented in part one, and conclusions and comments.The major problem concerning substrate is washboard. This phenomena can be limited if one can control and minimize the amount of glue applied in the single- and double facer, use high surface weight on liner, use low surfaceweight on fluting and control the humidity during the conditioning of the corrugated board. Corrugated board with a smooth surface radically increases the quality in print.
Att säkerställa rätten att nyttja utrymme/anläggning i annans fasta egendom - exemplet Trafikverket
A property is owned with ownership which in turn may be granted limited rights to acquire the use of land or space in another's property. Tenancies and easements are the most common limited rights. Trafikverket has a range of different rights that are linked to its properties. There are rights that work in favour of Trafikverket?s property as well as against them.
Utveckling och dimensionering av en lastupptagande provningsram
ÅF Test Center in Borlänge had a need to expand their capacity for compressive and tensile strength tests. They wanted to do this by using a hydraulic cylinder, which they already possessed, to apply the force with. This required a load receiving structure. The aim of this work was to design and dimensioning a test bench for a cylinder marked NIKE 300 tons. The work would result in a completed design proposal on a test bench which could manage to run the compressive and tensile strength tests of up to 3000 kN.