Sökresultat:
8099 Uppsatser om Time series - Sida 57 av 540
"Surfnacke"- ett växande hälsoproblem bland ungdomar? : Skärmbaserade aktiviteter, fysisk inaktivitet, muskuloskeletala symptom och smärtintensitet
The aim of this study was to analyse ninth graders self reported screen based activities, sedentary time and musculoskeletal symptoms and pain intensity. The other aim was to examine changes regarding musculoskeletal pain and inactivity between ninth graders from a cross sectional study in year 2004. To meet this aim, following questions were designed: How is the relationship between screen based activities, inactivity, musculoskeletal symptoms, pain intensity and differences between girls and boys? How have musculoskeletal symptoms and screen time changed since year 2004?Method: The method used for this study was a quantitative method. The research was carried out using a questionnaire that was answered by pupils from 11 schools from all over Sweden.
Utveckling av HPLC-metoder för kvantifiering av nyckelkomponenter i en villkorad emulsion
Traditionally, rolling mills use emulsions based on a mixture of oil and water for lubrication. Since two years ago SAPA has been using (instead of oil) a synthetic lubricant so called conditional emulsion for hot-rolling of aluminum. This lubricant is water based and homogenous at ambient temperature, but switches to a two-phase system at heating above the cloud point.This project aims to validate and if necessary modify an existing HPLC method for quantifying two out of three key components (A, B and C) in the conditional emulsion. Attempts to develop a method to quantify the pH adjusting components, X and Y were also made. These two methods are required to optimize the lubricant.Due to the complexity of the components, it has been difficult to present a method for quantification, and HPLC with ELS detection was chosen after a long series of trials.
Föränderlig sittmöbel - att trolla fram en extra plats
The purpose of my project was to explore variability. I wanted to combine different ways of sitting and create some kind of seating furniture that could be changed to fit different kinds of situations and needs. I sought after a way to express safety and stability in the seating furniture and at the same time make it clear that it could be changed into something else or something more. It was very important to me that the furniture piece would have a long lifetime and would be something you kept for a long period of time. I decided that the changeable factor in my piece would be the possibility to change it from being a chair for one person into being a bench for two people.
Hur marknaden bedömer europeiska företagstillkännagivanden vid etablering i BRIC länder
The aim of this study is to examine how European companies? stock price is affected by an announcement about foreign direct investment in one of the BRIC countries. Another aim for the study is to examine if the market reacts differently to the three modes of entry methods in a given BRIC country and to examine if the market reacts differently to different European countries. The study also set out to answer if there were any effects of the three modes of entry that was visible a short time after the announcement. To answer and examine this, the authors used the event study approach. The study was conducted with a sample of 47 companies from France, Norway, Spain, Sweden and Germany.
Smålands museums bibliotek : underlag för en handlingsplan för biblioteksverksamheten grundad på de anställdas informationsbehov
Smålands museum, the museum of Småland, is a museum for the county of Kronoberg, a mission given to the museum by the state and county council. The main fields of the museum are the cultural heritage and the history of culture of the region. The museum of Småland is also the Swedish museum of glass. This Master s thesis focuses on the information requirements of the employees at the museum of Småland. Because of the financial status of the museum, the librarian that worked at the museum had to quit about four years ago.
En conjoint analys av förpackningsattribut.
Abstract
Title: A conjoint analysis of packaging attributes. How can the attributes of a
product?s packaging best look like to attract the consumer?
Authors: Linda Granberg & Helena Niklasson
Supervisor: Jan Svanberg
Department: School of Management, Blekinge Institute of Technology
Course: Bachelor?s thesis in Business Administration, 15 credits
Purpose: The purpose is to find out how visual and technical attributes on
product packaging affects the consumers tendency to want to buy the product.
Method: Conjoint analysis and a quantitative survey.
Results: When developing a package for a food product we?ve reached the
conclusion that it is most important to have clear product information on it.
The consumer wants it to be simple and easy to use, the people under time
pressure seeks product with new technology which can save them time..
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.
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.
Rätt gåva för rätt tillfälle
This master thesis is a study of the Swedish hydropower capacity to balance wind power. The Swedish government has decided that it should be possible to produce 30 TWh from wind power in the year 2020. The Swedish municipalities have to have plans for wind power plants with total yearly generation of 30 TWh. Wind power is an variable energy source that needs to be balanced by other energy sources. In Sweden the Swedish hydropower can be used for balancing a large scale introduction of wind power.
Interaktionsdesign för kommersiella webbtjänster
The company Microshop is interested in implementing new features in their product-website, and would like to examine the possibility and usefulness of introducing such functionality. When designing interaction for commercial websites, it is important to make the menus easy to use, and refrain from using deep hierarchies in order to avoid causing unnecessary burden for the users. There is an interest among users for adaptive functionality, but this requires great amounts of trust in the website from the user. Something which can be created by refraining from using implicit information, and provide detailed explanations throughout the website. A usability test was conducted in order to complement the data gathered from the theoretical study, the interviews and the expert evaluations.
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.
Att möta det okända : Utmaningar vid implementering av ett processorienterat arbetssätt inom offentlig verksamhet
This paper aims to shine a light on the challenges connected to the implementation of a process focused way of thinking in a public service organization. To this we have conducted a series of qualitative interviews, primarily from participants of a university driven project. The project aims to teach decision making employees of public service organizations how to use process modeling techniques to increase their efficiency. We have also interviewed the teachers who have taught the courses included in the project. As a final point of view we have also interviewed a researcher and IT consultants to compare novice users with experienced users of process modeling techniques.
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.