Sök:

Sökresultat:

4011 Uppsatser om Problems involving moisture - Sida 60 av 268

Automatiserad Konstruktion av Varmkanalsystem

The thesis has been carried out in cooperation with Master Flow AB, Västervik owned by the EWEBE Group. The company produces and sells hot runner systems that are tailor made for the customers.The problem that MasterFlow AB has encountered is in the construction of complex hot runner systems in SolidWorks. With several different lengths, fronts and endcaps that builds the nozzles of the hot runner systems, is affecting the problems for MasterFlow AB. The purpose of this work is to automate the design of hot runner systems so it does not overload the CAD-system SolidWorks.To gain an understanding of the problem, there have been several studies and observations at the company, where the focus has been on how the work is done with the design of hot runner systems. By using help from the corporate management, enough information has been collected to find a solution to these problems.The implementation of design automation has been based on a flowchart that was created.

Stolthet och fördomar: upplevelser av hur det är att vara ung i Herrgården

The purpose of this essay was to investigate the experience of being young and living in Herrgården in Rosengård, Malmö, from the aspects of six adolescents, two police officers, one social worker and one youth leader; and also what the cause is according to them, of disturbances arousing like those in the spring of 2007. At this moment there were antagonisms between adolescents and policemen. The research was performed with a qualitative method based on partly structured interviews. Four kinds of main themes were notable from the interview results. Those were: Growing up in Herrgården, Other peoples' view of Herrgården, Identity and Causes of the disturbances.

Miljöstyrning i byggprocessen. En kartläggning av pågående miljöarbete och framtida förbättringar.

A clean and affordable energy source for cooking is deficient in developing countries. People rely on fuels that contribute to environmental, social and health problems.Biogas is an alternative energy source and an increased investment in small-scale biogas production can in several developing countries be found. Several projects have started to use the technology in developing countries because of the benefits with biogas. Some cases in the establishment of biogas plants have succeeded and some have not. The study is a literature review supplemented by two field studies.

"Det som är hemskt känns väldigt hemskt i den åldern...". En kvalitativ studie av skydds- och riskfaktorer för depression hos unga vuxna samt familjeförhållandenas betydelse för behandling och tillfriskningsprocesser

The worsening of psychical health issues among young people has widely been discussed over the last few years. Research shows for example that 9% of girls at the age of 16-24 reported anxiety problems in 1989 while 16 years later, in 2005, the same number was 30%. The purpose of this essay was to study and analyze psychiatrists', psychologists' and counselors' view on the resilience and risk factors for youth depression (age 16-24). Beside this, our aim was to study their view on the influence of family environment on treatment and recovery. Data were collected with qualitative interviews with eight informants within the psychiatric care.

Elektronstrukturbaserad magnetiseringsdynamik

In this project a method used for performing accurate simulations on magnetization dynamics based on constrained field density functional theory has been validated and used for performing computations on a few magnetic materials. The method has been shown to simulate systems consisting of iron well, but there are still problems with simulations of alloys containing both magnetic and non-magnetic materials..

Etik på bibliotek : en kvalitativ studie av ett antal folkbibliotekaries yrkesetiska tankar och erfarenheter

The theme of this thesis is the professional ethics of public librarians. Qualitative interviews have been conducted with fourteen public librarians, with the aim to investigate their thoughts·and opinions concerning professional ethics and their experiences of ethical dilemmas in professional situations.The result shows that the majority of the librarians often discuss problems concerning what's right or wrong but that the discussions are conducted on the basis of practical situations and not in terms of professional ethics. The majority have vague ideas of how the term professional ethics should be applied on the work of public librarians, though all the interviewees consider the professional ethical discussion to be important.We examine the librarians opinions and experiences of ethical dilemmas conceming four subject areas: the principle of the librarian as a neutral and nonrestricting information intermediary, the principle of equal treatment of all the library visitors, difficulties. concerning media selection and the problems based upon the librarians flexibility towards the intemal rules of the library. The librarians experienced the behaviour towards the visitors as the greatest problem.

En studie i användbarhet: En kritisk analys av användbarhetsstudier i biblioteks- och informationsvetenskap

Usability studies are not a central field of research in library and information science. Although literature in library and information science treats the importance of usable user interfaces quite extensively, the literature does not significantly treat potential problems in measuring usability. The aim of this master thesis is to investigate, through a critical analysis, the methods used when conducting usability studies in library and information science. The critical analysis is based on potential problems in measuring usability identified through a literature review from the field of studies Human-Computer Interaction, the concept of usabilitys original domain. The material which is to be analysed, is chosen from one library and information science journal Journal of the American Society for Information Science and Technology.

Utsöndring av klamydia från kliniskt friska katter :

Blood samples from 44 clinically healthy cats were analysed for the presence of antibodies to Chlamydophila felis. As we wanted to investigate if the antibody titre of clinically healthy cats correlates to shedding of chlamydia, conjunctival and vaginal or preputial swabs respectively, were taken and analysed with rtPCR (real-time polymerase chain reaction) for the presence of chlamydia DNA. Furthermore, to investigate possible epidemiological factors connected with asymptomatic cats infected with chlamydia and to see if there were any indications that chlamydiosis can cause reproductive problems, the owners of the cats were asked questions regarding this. Sixty-one per cent (27 of 44) of the cats were seropositive. Three of these (11 %) had the highest antibody titre (1:1600).

Fuktutredning av massivträkonstruktion : Analys av vägg utan ångspärr

Rapporten ingår i ett FoU- projekt för Högskolan Dalarna, där målet är att ta fram en konstruktion utan ångspärr som ska klara dagens mått på lufttäthet och fuktkrav.Syftet med denna rapport är att utreda hur fukt påverkar en byggnad medmassivträstomme och olika isoleringsmaterial utan ångspärr. Mineralull och träfiberisolering jämförs mot varandra för att se hur dessa påverkarfuktbelastningen i en väggkonstruktion. Testobjektet är lokaliserat i Dalarna, inget fukttillskott har funnits inomhus i byggnaden.För att genomföra detta arbete har tre stycken olika metoder används. Ensimulering, verkliga uppmätta värden och en provtagning. Fuktsimuleringen genomfördes med hjälp av programmet WUFI, uppmätta värden i form av relativ fuktighet och temperatur har samlats in kontinuerligt under två års tid från väggkonstruktionen via mätsensorer.

Utfodring av älg (Alces alces) och lodjur (Lynx lynx) i fångenskap

In today's Sweden there are approximately 23 000 combination companies, and most of them have a connection with the agricultural sector. The most common type of additional operation is some form of contracting.The aim for this degree project is to answer the following question: which problems and key factors exists within combination operations? The main topic will be within coordination and management questions within agricultural companies with an additional operation.Litterateur written earlier within this subject will be used in this thesis. Mainly litterateur which contains information about combination companies and diversification of some sort. There are also other theories used in this thesis such as; resource based theory and decision making theory in order to understand the problems and key factors within combination companies.In order to investigate the aim of this thesis we have chosen to perform two qualitative interviews with the managers of two different combination companies.

Spatiella mönster och lager av organiskt klor och klorid i barrskogsjord i sydöstra Sverige

The concentration and storage of organic chlorine and chloride were determined in soil, to a depth of 40 cm, in a coniferous forest in the Stubbetorp catchment area in south-east Sweden. Also, the spatial distribution of the two forms of chlorine was determined. Soil samples were collected at 49 of the nodes in a grid with approximately 105 m between the nodes. The analysis of spatial variability suggested that no spatial autocorrelation was present either within the variable organic chlorine or chloride. This means that no sample was more influenced by another nearby sample, as compared to other samples further away.

Utveckling av mobiltelefonapplikation för kommunikation i ad-hoc nätverk med Bluetoothteknik

The purpose of this thesis is to develop an application for mobile phones that simplifies communication. The company Doberman wanted to look at possibilities to develop such an application that uses Bluetooth? technol-ogy to communicate in ad-hoc networks. The aim has been an application to run on mobile phones in which you can send messages and files to other devices and also add a user profile with personal information to share with others. The communication will take place in temporary networks created when Bluetooth enabled devices is in range of each other.The market for mobile phones has grown rapidly over the past years and is still growing.

Personbilar i singelolyckor med dödlig utgång på Sveriges vägnät : Orsaker till olyckor och rekommendationer om hur dessa kan förebyggas

In Sweden the most common type of road traffic accidents involving passenger cars are single accidents (where only one vehicle is involved). The aim of this thesis is to analyse how these accidents occur, and present recommendations on how to reduce the number of deaths. Data has been collected from the Swedish Transport Administration?s in-depth studies of fatal accidents. Road traffic accidents with fatal outcome that happened on public roads during the years 2007 to 2009 have been studied.

?Dead. He is Dead. God blesses America? : Den Amerikanska pressens gestaltning av kriget mot terrorism kring Usama bin Ladins död

Almost 10 years after the attack on World Trade Center Sept. 11 2001, Osama bin Laden was shot and killed on May 2 2011 in Pakistan. How was this event framed by the media with regards to the global war on terror? This study compares two different American newspapers ? the New York Times and the New York Daily News ? and how they framed the war on terrorism in the Middle East from May 2 to May 15 2011. By analyzing the framing in a perspective of the four functions of framing theory: define problems, diagnose causes, make moral judgments and suggest remedies, we found considerable differences in each papers frames.

Chinese Remainder Theorem

Chinese Remainder Theorem is used to solving problems in computing, coding and cryptography. In computing we can compute with shorter numbers instead of large numbers and this will make the computing-process faster and easier. In coding it can be used for error-searching and error-regulating.Cryptography means that we can send a coded message and that no one will be able to read it without the decode-key which is based on prim-numbers. I am writing about the history of mathematics and how the number- and decimal number-system is used in Babylon, Egypt, Greece and in China. Abacus was a very important aid to calculate advanced mathematical problems.

<- Föregående sida 60 Nästa sida ->