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8430 Uppsatser om Operations research - Sida 61 av 562
Utvärdering av en beslutsåterkopplad kanalestimator för tredje generationens mobiltelefonisystem
This Masters thesis work describes a comparison between two different methods
for estimation of the down channel (base station to mobile subscriber) in
Wide-band Code Division Multiple Access (WCDMA).
The first estimation method, Optimal Feed-forward Channel Estimation (OFCE), is
a conventional method that bases the estimates on data that is known to both
sender and receiver, so called pilots. The second method, Decision Directed
Channel Estimation (DDCE), is an elaboration of OFCE. It also uses user data
for estimation.
Simulations show that DDCE, in comparison to OFCE, does not attain an
improvement in signal-to-noise-ratio (SNR) for high bit error rates (BER). An
improvement is only seen when the BER becomes much lower than what is common in
real situations.
In conclusion DDCE is complicated, involves many mathematical operations and
gives insignificant improvement of SNR when BER takes common values. It is
legitimate to question if it is possible to use the method in a real mobile
phone system..
Klickers ur ett studentperspektiv : Studenters uppfattning av klickers vid Uppsala universitet
Audience responese technology (ART) often called clickers are becoming more common, not only internationally but also at Swedish universities. No direct Swedish research has been identified, this is however a major area of research internationally. There is both research on clickers positive effect on study results and how students feel about using clickers. This study has taken a Swedish translated version of Cheesman, Winograd, and Wehrman?s (2010) survey to investigate how perception of clickers differ between students in Disciplinary Domain of Medicine and Pharmacy and Disciplinary Domain of Science and Technology.
Facebook - en falsk utopi? : En studie av politisk polarisering på Facebook
Title: Facebook ? a false utopia?Authors: Anton Furuland & Dominic ChennayaPrincipal research question: Is the political polarization increasing on and through Facebook?Theoretical frame: Identification theory, selective exposure theory, spiral of silenceMethod/Material: Semi-structured interviews which provided our materialMain Results: Our research has shown a tendency for increased political polarization on Facebook.Number of pages: 58Course: Media and communication studies CDepartment: Department of informaticsUniversity: Uppsala UniversityPeriod: HT 2014Tutor: Amelie HössjerKeywords: Political polarization, Facebook, political debate, selective exposure, identification.
Att bygga kundrelationer med hjälp av communities
The advancements in digital technology and its availability contribute to the transfer of companycentricproduct development and value creation to networks or communities. It also changes the basisfor creation of customer relationships as described in previous research on Customer relationshipmanagement (CRM). The purpose of this case study was to gain an understanding of how companieslike our case study object Memoto who developed a physical product which gets added-value fromdigital product-related services looks upon product-centered communities as a way of buildingcustomer relationships. How Memoto looks upon incentives for participation in product-centeredcommunities was also examined.Our research indicated that firms in the start-up phase (which Memoto was when this study wasconducted) initially want to have more control over the process of innovation and hence have directcontact with end-customers. The reason for this is because they see a need to define the basis forfurther innovation work.
Interventioner som reducerar oro inför och under anestesi hos vuxna patienter
BackgroundResearch shows that the majority of patients feel anxiety before and during anesthesia. It has been shown in several studies that preoperative anxiety may cause adverse effects in the postoperative course. Nurse anesthetists have a key role in creating a safe environment and the opportunity to use different interventions to reduce the degree of anxiety.AimThe aim of the study was to examine which interventions may reduce anxiety in adult patients before and during both general, local and regional anesthesia.DesignSystematic literature review with a quantitative approach.ResultsSeveral studies indicate that gabapentin and pregabalin can reduce anxiety before and during anesthesia. The anxiety reducing effect appeared to be dose dependent. The naturopathic drugs Citrus aurantium blossom and Passiflora incarnata Linneaus were found to reduce anxiety before anesthesia.
Cradle to cradle : Utveckling av en återvinningsbar produkt på uppdrag av Ire möbel AB
Detta examensarbete är ett möbeldesignprojekt på uppdrag av Ire möbel AB som handlar om en resa från en första kontakt med ett möbelföretag och genom research om Cradle to Cradle® och designprocess till att rita en fåtölj möjlig att certifiera enligt Cradle to Cradle®.Tidigare miljöcertifieringar bygger på att minska resurser, utsläpp och innehåll av giftiga ämnen samt minimera skadorna av dessa. Men om man ser till planetens tillstånd, räcker det inte att bara minska de skadliga effekterna. Vi måste lära oss att organisera och utforma de produkter vi skapar så att de kan ge oss en fördel istället.I mitt projekt har jag dels gjort research om Cradle to Cradle®. Jag har också undersökt hur befintliga möbler på marknaden ser ut och är konstruerade.Mitt projekt visade också att utseendet hos en Cradle to Cradle®-produkt i hög grad styrs av just de restriktioner som certifieringen innebär..
?Men dom kan ju i alla fall läsa? ? Litteratur på teckenspråk
The goal of this Master?s thesis is to explore the approach and general attitude of public libraries regarding Sign Language Literature. There is a need to study and advance how the deaf can find ways to read in their own language, as it is as important to them to be able to read in their language, as it is to the next hearing person. The purpose is to define and explain the full capacity of the problem. In the process of research, by investigating how library staff approaches and deal with deaf patrons, the nature of the patron-staff relationship is revealed.
Gymnasieverksamheten : en kvalitativ undersökning om Ungdoms- och familjeteamets samverkan med gymnasieskolan och polisen i drogpreventivt arbete
Upper secondary schools programme - a qualitative study about the collaboration of the Youth- and family team, the upper secondary schools and the police to prevent drugsAuthor: Åsa GöranssonSupervisor: Björn JohanssonThis essay discuss drug preventative work performed by the members of the ?Upper secondary schools programme?, which is a part of the Youth- and family team of the Social Services. They perform this work in collaboration with the police and upper secondary schools in Örebro.The purpose of this essay is to investigate and describe this collaboration. More specifically, the purpose is to study the contents of documents of the municipality of Örebro concerning drug prevention aimed at youths through collaboration and compare with the actual work that is carried out by the Youth- and family team through collaboration. Further issues dealt with are possible improvements and if the parties concerned feel a need for a documented structure concerning their way of working.I have used a qualitative method and I have interviewed members of parties concerned.
Lean Production i den offentliga sektorn : Hur kan Lean Production påverka medarbetare att jobba med ständiga förbättringar och kundvärde?
AbstractTitle:Lean Production in The Public SectorsLevel:Final assignment for Master of Science in Business Administration.Authors:Simon Mårtensson and Ramnpreet Kaur MaanSupervisor:Stig Sörling and Tomas Källquist.Examiner:Lars-Johan ÅgeDate:2015 ? June.Aim:The use of Lean Production in the public sector is increasing and there are still opportunities for improvement that contributes to a higher customer value. According to previous research that has been done, there is a lack of research in the field of Lean production in the public sector. Thus, the aim of this study is to create an understanding of how Lean production as a concept can help to influence employees to work with continuous improvements and customer value in the public sector.Method:The study has a hermeneutic perspective as a starting point where the substance is studied from an operator approach. We have chosen to build our study with the help of deduction starting with a theoretical framework and then go into the empirical framework.
Utvecklingskostnaders påverkan vid valet mellan K2 och K3
Introduction: Bokföringsnämnden started the K-project in 2004. The purpose was to collect rules and standards for different categories of companies in a complete set of regulations. Small businesses were given the option to choose between K3 which is the main regulatory and K2 which is a simplified regulatory framework. One specific difference between the regulations is that companies may not capitalize development costs if the company applies K2, this may causes problems for the companies that can give rise to such costs.Purpose: The purpose is to explain the problems that companies have identified in the choice of regulatory frameworks and the implications that may follow the specific rule in K2 on the company's activities and financial report.Frame of reference: K3 contains definitions and requirements that must be met so development costs can be capitalized in a company. Information presented in the financial statements should be relevant to the reader.
Anorektiskt beteende och Pro-ana : Sett ur ett sociologiskt perspektiv
Following study is about the anorexic behavior and the pro-ana movement, which is a web-based subculture where the followers of this, stands for anorexia as an identity position and lifestyle, rather than a disease. The purpose of this study was that, from a sociological perspective give possible interpretations of the anorexic behavior, and interpret why some anorexics choose to be a part of and identify oneself with the pro-ana movement. The reason has been to conduce more knowledge and understanding of the topics, but also to contribute with a deeper perspective and sociological approach to the former research that is already available.To conduct the study, qualitative research has been used, and the chosen methodology was document analysis/text analysis. The collected empirical data consisted material from two pro-ana forums, four blogs and six twitter accounts, where all the users of those claimed to be supporters of the pro-ana. The empirical data has been interpreted by Howard S.
Produkthype: En fallstudie (En kvalitativ undersökning om vad som ligger bakom en produkthype)
To identify the underlying forces behind a product hype is difficult and the findings often seem random and unclear. To create a better understanding behind the affecting mechanisms would consequently be a valuable addition to the surrounding research area. The purpose of this paper is to understand if there exist common denominators between different product hypes and in such a case, which these are and how they function. By conducting a case-study on four products which have enjoyed immense sale success on the Swedish market, the possible presence of structural resemblance will be analyzed. From the study we can conclude common denominators such as the presence of an underlying trend and an overbalance of indirect decision basis do exist.
Expander : En studie av Expanders kommunikation och varumärke
Communication can be heard in many different ways and it is important for all businesses, especially in B2B. The construction and maintenance of a brand plays just like the communication a very important part. These parts also have a lot to common and affect each other in a large extent. One problem that may occur in many companies is the failure to grow and gain a larger share of the market even if they in various ways are trying. Expander is one of those companies and in this research report we studied communication and brand building, focusing on brand management, relationships and integrated marketing. Here we drew the conclusion that all these areas are important for a company, especially in the Business-to-Business marketing in different ways.
Elever med Aspergers syndrom : Hur kan pedagoger arbeta för att underlätta för dessa elever?
The purpose with my examination is to make a contribution to how, as a pedagogue, you can work to make it easier for pupils with Aspergers syndrome that are integrated in an ?average? class. I will concentrate my work to these questions: how pedagogues can work to make it easier for pupils with Asperger syndrome that are integrated in an ?average? class. If it affects the other pupils in the class when pupils with Asperger syndrome is integrated in the class and also if it affects the pedagogues work having these children integrated in their ?average? class.I have decided to study research and other literature and also to do two interviews to find out how pedagogues can make it easier for children with the diagnosis Asperger syndrome.
Grönt resande : En studie om hur företag arbetar med klimatkompensation
Carbon offsetting means to offset those greenhouse gases that are caused by our actions. The purpose of this paper is to examine how companies are working with carbon offsetting. The focus of the research is how travel agencies and companies that provides carbon offsetting. The writers also highlight the problems carbon offsetting is facing. The study was performed with qualitative methods through interviews with three companies working with carbon offsetting.