Syftet med denna uppsats är att undersöka hur väl Hotellingmodellen förutsäger prisutvecklingen, efterfrågan och den optimala utvinningen av järnmalm under tidsperioden 1970-2000. I uppsatsen görs en jämförelse mellan modellen och den faktiska utvecklingen. Den teoretiska referensramen i uppsatsen är den så kallade Hotellingmodellen för en monopolmarknad. Enligt denna bestäms priset av en ändlig resurs av två komponenter, marginalkostnaden, som är konstant och marginal user cost som stiger med den årliga diskonteringsräntan. Uppsatsen är baserad på data från LKAB:s årsredovisning 1970 och data för pris per ton och produktion i ton av järnmalm på LKAB 1970-2000.

The aim of this paper is to examine, by means of a quantitative method, whether using a Swedish athlete endorser in a sports advertisement will increase its effectiveness. We examine which characteristics an athlete endorser needs to be able to make people form a positive attitude towards the athlete endorser and thereby make him or her successful in advertising. We also look into whether an interest in sports can affect the advertisement effectiveness when using a Swedish athlete endorser. The results show that a well-liked Swedish athlete endorser generates highest ad effectiveness and that the most important characteristics that contribute to form a positive attitude towards an athlete endorser are trustworthy, physical attractiveness, success in sports and ?successful in respondent?s mind?.

In this essay I want to investigate how the poodle strategy affects a person?s credibility when he or she uses it. The poodle strategy is a strategy, which someone uses when he or she is scrutinized by the media. It?s primary purpose is to suppress further media coverage but it is also a strategy for defending oneself and hence rescuing one?s reputation either as a private person or as an official.The essay?s research questions are:How has the strategy been applied for defensive purposes and what are the results?To which extent can the Stasis theory and Benoit?s theory on Apologia be connected to the strategy?Does the strategy affect the user?s credibility?To answer these questions four cases from the political sphere in Sweden where persons have been said to have ?done a poodle? have been analyzed.

The aim of this bachelor?s thesis is to examine what expectations a few, adult, frequent library users have on librarians' competences at a specific library. We also aim to compare how well the library users' expectations relates to how the librarians describe their own competences.The method used to gather the empirical information in this study is the qualitative semi-structured interview. We interviewed six library users and the four librarians who are employed at the library where we placed our study. The results of our interviews were analyzed with the help of a model based on Anders Ørom?s librarian identities.

Denna studie berör hur man skapar en användbar och säker webbutik och onlineportfolio för en konstnär eller fotograf. Tanken är att sälja in deras konstverk med en app som använder Augmented Reality genom att visa hur tavlan ser ut på väggen med en smartphonekamera. Studiens fokus ligger på användbarhet och design i webbutiker för att öka kundförtroendet, interaktion med tilltalande användarupplevelse samt för att sälja in tavlorna. Efter att ha studerat användbarhet, kundcentrerad webbdesign och designteorier för framtagandet av interaktiva system, togs skisser av både webbutik och prototyp till app fram. Prototypen testades i samband med semi-strukturerade intervjuer.

Sveriges Radio stores their data in large archives which makes it hard to retrieve specific information. The sheer size of the archives makes retrieving information about a specific event difficult and causes a big problem. To solve this problem a more consistent use of metadata is needed. This resulted in an investigation about metadata and keyword genera-tion.The appointed task was to automatically generate keywords from transcribed radio shows. This included an investigation of which systems and algorithms that can be used to generate keywords, based on previous works.

Spotify is a music service that offers on-demand streaming and is available in several countries worldwide. As the company and the interest for it grows, more and more parties are involved and those involved, including the record labels want to control and get an overview of their products. They want to be able to see, for example, when a product is available on Spotify and in which countries.Spotify is in May 2013 in process of developing a to be used by administrators on Spotify in order to meet the record labels with the information requested. The new software intends being used by administrators but also by the record labels so that they will be able to overview their products availability.We were asked by one of the developers to conduct user interviews and tests to result in a design proposal on how the display page of information about a product could be visualized more clearly so that it suits both record labels and employees at Spotify. The results of our contextual interviews were translated into a prototype with two display pages.

Syftet med denna studie har varit att undersöka hur nätverksarbetet inom socialtjänsten upplevdes ur ett brukarperspektiv i en medelstor kommun i Sverige. I den studerade kommunen användes nätverksarbete som en insats för barn och ungdomar aktuella inom socialtjänsten. Nätverksarbetet innebar en samverkan mellan de privata och de professionella aktörerna för att uppnå hållbara lösningar för ungdomarna och deras familjer. Studien genomfördes kvalitativt via åtta intervjuer med föräldrar till barn och ungdomar aktuella inom socialtjänsten där nätverksarbetet hade genomförts som en insats. I resultatredovisningen och analysen har systemteori och de salutogena perspektivets tre begrepp; begriplighet, hanterbarhet och meningsfullhet samt empowerment används.

Chalmers University of Technology today have numerous computers which are never powereddown, at the same time there is a need for more computation power for researchers.Hence, we have investigated the possibility to use the computers for computing power andsecondly, if there is no work to be done, to put them into power saving mode.We have made a thorough study where we compared different distributing systems andin the end HTCondor was chosen as the best to implement. HTCondor is an excellent systemfor opportunistic use of computing power, i.e. make use of computers that no one elseis currently using. The system is used at several universities around the world with goodresults and would be excellent at Chalmers, where there is a need for such a system.Our implementation shows that HTCondor is well capable of handling unused computingpower. HTCondor can handle most file types that may be run on the system.

The aim of this master thesis is to investigate changes within four discourses identified in the curriculum material of the Swedish library education in Borås Bibliotekarielinjen dating from 1977 and 1985 and its successor Library and Information Science Biblioteks- och informationsvetenskap dating from 1995, 1999. My method used is a text analytic method primarily derived from the discourse theory of Ernesto Laclau and Chantal Mouffe, yet with addition of tools from the critical discourse analysis of Fairclough. By identifying three floating signifiers within the material, i.e information, library, and librarian, and thereafter identifying their fixation, a pattern of resemblance and diversity in the fixating signs appeared between different courses of the curriculum dating from 1999. Hence I could establish an order of discourse consisting of four library discourses, a knowledge organisation discourse, a user discourse, a society discourse and a management discourse. Using this discursive order as a pattern, I could trace these four discourses back in time within the material dating from 1995, 1985 and 1977.

The purpose of this Master?s thesis is to investigate how public library users consider the knowledge of the librarians and to examine what the users expect from the librarians. To begin with, we contemplate our own view of the librarians, their knowledge and what help we expect at the library. Realising that we do not expect particularly much from librarians, although we have studied to become librarians for two years, we assume that the regular library user does not expect much either. This assumption resulted in our decision to investigate this particular question.

LKAB och FAB (Fastighets AB Malmfälten) tillsammans med samhället i Malmfälten står idag inför en unik situation där bostäder måste flyttas eller rivas på grund av gruvans riskområde som breder ut sig. Detta har resulterat i att FAB planerar att bygga nya hyreslägenheter. Det är viktigt för LKAB och FAB att de bygger lägenheter vilka är långsiktigt hållbara och som hyresgästerna uppskattar samt efterfrågar. Vi har utifrån denna situation utvecklat vårt syfte som är att öka förståelsen för hur företag kan vinna order på marknaden vid introduktion av nya produkter. För att svara på syftet har vi genomfört en fallstudie genom intervjuer, en observation samt tagit del av enkätsvar.

The web has evolved much through the years. From being a place where author and reader were clearly distinguished, it now invites everyone to take part in the development of both content and technology. Social services are central in what is called Web 2.0. Wikis, blogs and folksonomies are all examples of how the users and their communities are key to the development of services. Collaborative writing, tags and API:s are central.

Eftersom våld gestaltat i cartoon-stil ofta anses mer accepterat för barn och ungdomar genom att våldet maskeras med en humoristisk gestaltning, har intresset varit att ta reda på vad i stiliseringen som har störst inverkan. Utifrån denna teoretiska utgångspunkt har arbetet ställt frågor kring hur stilisering av form eller textur påverkar uppfattningen av en karaktär i 3D-grafik. För att besvara dessa frågor utfördes ett praktiskt arbete bestående av två modellerade karaktärer, renderade i tre olika versioner. Dessa versioner bestod av olika kombinationer av relativt realistisk representation och stilisering i cartoon-stil, vilket innebar stilisering av textur eller form. Denna uppfattning undersöktes sedan främst ur barn och ungdomars perspektiv, genom enkäter baserade på främst slutna frågor och skalor.

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..