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8121 Uppsatser om Time-varying - Sida 54 av 542
Adaptiv katalysatormodell för reglering
This master?s thesis describes the development of a model of the catalystsystem aiming at control by an MPC. A well functioning model, which is suitable in control purpose, is important while emission legislation become more and more hard to fulfill for the car manufacturers. Much research has been done in the field of physical modeling of the system, but in this work a linear adaptive time discrete ARX-model is developed and validated.The systems tendency to change its dynamic during usage implies that the model must be adaptive. The developed model proved to be well functioning and shows promising conditions for the MPC design.
?Det gäller att hänga på?- en studie om marknadsföring av folkbibliotek via sociala medier
The purpose of this bachelor thesis is to examine how public libraries use socialmedia for marketing purposes, and what librarians think about this. My focus of this thesislies on what librarians think about marketing of libraries through social media and if theythink that marketing through social media can create a better relationship between the libraryand its users. The questions I wanted to answer were:? Libraries using social media, for what purpose do they use them? ? Do the libraries choose to use social media to market their organization? Why? ? What attitudes exist among librarians about marketing through social media?The theoretical framework for this thesis is Evert Gummessons model off Relationshipmarketing and the process of Internet marketing, which both are based on relationalperspective. The methodology used for this study was structured interviews.
DEN EUROPEISKA IDENTITETENS KOMPONENTER En kvantitativ analys p? vad som definierar den europeiska identiteten
The European identity plays an important role for the EU and especially within its will to further integrate its citizens, hence it is a way for individuals to not only identify with its nation, yet also with Europe. Previous research has already established that an individual can possess two territorial identities, such as a national and a European identity, above all it has established how the identities can equally interplay. Further it has been explained how territorial identities are composed of two aspects: civic and cultural. While the previous research has stated how the European identity possesses both aspects, though to varying degrees, little attention has been put to examine how individuals who possesses multiple territorial identification, defines its European identity. This study therefore aims to study which aspects, civic or cultural, individuals with a citizenship who possess multiple territorial identification, assign their European identity.
(O)kritisk informationskompetens? : En utvärdering av undervisning i informationskompetens inom högre utbildning
The purpose of this thesis is to examine the benefit of information literacy instruction in two student groups at Kristianstad University, in relation to development of critical information literacy and within the boundaries of the educational goals. This study takes on a critical information literacy perspective that combines critical pedagogy and standards for information literacy in higher education. Two methods have been used for data collection: interviews and questionnaires. According to the results of the study the information literacy instruction provided by the Kristianstad University Library is important and useful for the students in their academic studies. It also becomes clear that the information literacy differs between the two groups as a consequence of the varying information literacy instruction received by the two groups.
Rysslands påverkan på den vitryska demokratiseringsprocessen
This thesis sets out to investigate three questions, first, how the Belarusian democratization process has progressed since the country?s independence in 1991 to the year of 2006. Second, how the relationship between Russia and Belarus has progressed during this time and third, if and how Russia has affected the democratization process. The study has been conducted through qualitative method, mainly using books and articles as sources of information. It has been found that the democratization process in Belarus has evolved in a negative direction ever since the presidential election of 1994.
"Hon är ju tjej, tänker man" : Mäns erfarenheter som offer för våld i nära olikkönade parrelationer
Increasing attention has been given to men?s experiences as victims of intimate partner violence in the Western world, mostly in quantitative research, within different research fields. The aim of this research paper is to explore men?sspecific experiences of intimate partner violence in heterosexual relationships in a Swedish context, through a gender perspective and with a qualitative research approach. The paper begins by briefly mentioning key findings in existing quantitative and qualitative research, focusing on Sweden.
Glappet i den svenska vargattityden - en fråga om närhet till naturen?
Humans attitudes towards different animals are very complex were culture, genetic, psychology and evolution are some of the factors that influence. The order of animals that can provoke the most intense and extreme attitudes, both positive and negative, are the carnivores. Wolves are a constant debate in Sweden and even though a big part of the population are neutral towards the wolf, a clear friction of the attitudes can be seen. Some factors that have been seen to influence the attitude are age, education and the size of the hometown. The aim of this study is to investigate whether outdoor activities, time spend in rural areas, and time spent in a weekend cottage, also correlate with attitude towards wolf.
Chatt - ett nytt sätt att kommunicera med bibliotekarien
This thesis presents a new way of providing library users with reference services, namely chat (text based digital reference service in real time). Our research questions focus on the role of reference service, a comparison of chat reference to other reference forms, and the interest for real-time, digital reference. Our literature review covered the areas of digital reference and reference theory, the results of which showed that an ongoing debate hardly exists among Swedish librarians on the topic of reference work. We interviewed librarians from the three different Swedish chat reference projects existing at the time of our study. Most interviewees were very positive about chat reference.
Breast cancer stem cells : evidence and contradictory views
This literature study aims to examine the existence of cancer stem cells in breast cancer. The cancer stem cell theory states that there is a hierarchical organization within a tumour, in which a small subpopulation of the cells can initiate new tumours and maintain tumour growth whilst the bulk of the tumour cannot. These tumour initiating cells have shown to possess many characteristics similar to those of adult stem cells, which is why they are often referred to as cancer stem cells. Both cell types have the capacity of asymmetric division and have shown to possess mechanisms of resistance to both apoptosis and cancer drugs. The cancer stem cell theory elucidates many biological aspects such as the heterogeneity of tumours and the relapse of many cancers after what appeared to be successful treatments.
Hur hanterar sjuksköterskor stress i arbetet? : En litteraturöversikt
Background: The nursing profession involves meetings and situations which can be stressful. The work environment can cause additional stress in the form of time pressure, lack of support from colleagues, management or disgruntled family members and patients. This places the nurse in a position that requires a sharpened ability to handle stress. It can become overwhelming and unmanageable and cause a serious threat to the nurse's health and wellbeing. To handle stress the nurses uses different coping strategies.Aim: The aim of the review was to gain a better understanding of how nurses deal with occupational stress.Method: A systematic literature overview study based on eleven articles, including both qualitative and quantitative studies.Results: Nurses deal with stress in different ways based on their own resources.
A comparison between techniques for color grading in games
Color has been significant in visual arts for as long as the art-forms have existed. Still images and movies have long used colors and color grading effects to affect the viewer and characterize the work. In recent years attempts have been made to bring these techniques of stylizing also to interactive games. This dissertation aims to compare two different approaches of performing real-time color grading for games. Focus is put on examining the two ways from a number of different perspectives and from there draw conclusions on advantages and disadvantages of the approaches.
Arbetstidsdirektivet och arbetstidslagen - En utredande studie
Sweden is a member of the European Union since 1995. The European Union issues directives that cover different areas. Member states must implement these directives into their national legislation. The European council issued in 1993 a directive that took action on the organization of working time, also known as the working time directive. The full name is: Council directive 93/104/EC of 23 November 1993 concerning certain aspects of the organization of working time.
Mitt hem det är allt det : En kvalitativ studie om hemtjänstmottagares syn på hemmet, åldrande och hjälpberoende
AbstractThe intention of our study was to examine the meaning of home of elderly women and men and how they experience their getting older. We also wanted to see how elderly women and men experience to receive home-help-service in their own home. The study was based on qualitative interviews with elderly women and men. The informants were five women and four men between the ages of 60-84 years. They all had everyday help from the home-help-service.
Nätnyttomodellens fall och framtidens reglering av eltransmissionstariffer : Tidigare meningsskiljaktigheter samt undersökning av förutsättningar för framtida reglering
The main ambition of this degree project is to illustrate the fundamental problems of today?s electric tariff regulation and the usage of the analyzing tool; The Network Tariff Model. There is a further discussion of potential problems and clear improvements of the 2012 years proposed network tariff regulation. Interviews have been conducted with specific network companies and Energimarknadsinspektionen. The proposed regulation of 2012 is discussed from the government?s proposition.This paper clearly shows that the authority´s work has been conducted in a very unprofessional manner during the period of The Network Tariff Model.
Konstruktion av anordning för att undersöka förslitning av syrebärarpartiklar för kemcyklisk förbränning
The purpose of this work is to design and construct a device able to measure the mechanical attrition of oxygen carrier particles. Those particles are used in chemical looping combustion and in the present situation there is a lack of knowledge in how the attrition process work and in which extension. To find already tested solutions trying to answering this problem a literature study wascarried out and the best solution found was the so called Grace-Davison Jet-Cup method. This method is supposed to emulate the attrition caused by a cyclone separator and its advantages are that it is possible to use small test amounts, 5-10 g, and a thirty minutes long test will be enough to acquire useable results. An device was designed based on the Jet-Cup method with some slight modifications.