Den här uppsatsen handlar om korttidsminnet (arbetsminnet) och dess kapacitet att lagra och processa information. Ett perceptionsexperiment som utfördes ger en inblick i hur korttidsminnet fungerar i praktiken och innefattar randmönster och ovaler som stimuli. Responstid och Precision mäts och jämförs med avseende på betingelser som position och orientering. Uppsatsens hypotes är att samma respektive olika position på stimuli har betydelse för både snabbhet och Precision. Resultatet bekräftade denna hypotes.

This thesis is focusing on how global and local search engines retrieve information from the local domain. The three search engines tested are the global search engines Yahoo, Ask.com and the local search engine Web Wombat. The questions we examined were: which search engine has the best retrieval effectiveness? Could there be other reasons than retrieval effectiveness, to choosing a local search engine?For our test we constructed 20 questions related to Australia.We chose to divide the questions into topics like nature, sports and culture. For all questions we evaluated the relevance of the first 20 hits.

Studies show that activity based costing (ABC) is not widespread in practice even though it has been present in the academic world since the 80's. This thesis examines the reasons for the discrepancy between theory and practice through a case study of a Swedish manufacturing company. The intension is to answer the question of what contributes to the choice of Precision in product costing.We found arguments for increasing Precision in product costing but not to the extent of a full-scale ABC implementation. The company's estimation of the value of increased Precision. In the study three company unique factors were isolated that affected the company's estimation of value; drifting purpose of product costing, historical use of product costing and knowledge about product costing..

The purpose of this thesis is to evaluate and compare the retrieval effectiveness of two search engines on the Internet: Svensk Medicin and Google Scholar. Svensk Medicin is a medicine-specific search engine and Google Scholar specialises in indexing scholarly material. A set of 20 questions in four categories were used to conduct the searches with the search engines. Genuine medical information needs were selected from a question collection provided by the television program Fråga doktorn. The relevance of the first 10 retrieved documents was judged by using a binary scale and the measure used was Precision.

The purpose of this Master?s thesis is to evaluate three general query-based web search engines. The search engines chosen are Google, Yahoo! and Live Search. The topics, which where transformed into twenty queries, are based on real users? information needs, taken from an ask-a-question service.

This study investigates augmented reality using third person perspective and what Precision can be achieved by using this method. There have been prior studies in regards to Precision using augmented reality, however studies using third person perspective is scarce. This study presents a solution using a static camera capturing the user as well as the plane to augment from behind. This augmented image is then transferred to a handheld device that is held by the user. Using this method the user will be free to manipulate and work with the plane without removing the device that captures the scene, a common problem when using visual reference markers in augmented reality.

GPS is perhaps the future in agriculture. The next years will show it but the Precision becomes only better and better and the number of users becomes only more and more. This work shows experiences from today's users and how the profitability can be improved on a farm with normal plant cultivation. The aim is to show how big the actual advantage can be to have a GPS and how good Precision there is with the equipment. John Deere and Trimble are the big producers of GPS equipment to the agriculture.

Examensarbetet utfördes på Balco AB i Växjö, som tillverkar och erbjuder balkongsystem påtotalentreprenad. Eftersom Balcos ökade omsättning har lett till att ankomstrollen inte längre kan utföras medtillräckligt hög Precision, så har produktionsplaneringen blivit lidande. Syftet med projektet var därför att Balcoska kunna ankomstrapportera inkomna aluminiumprofiler från underleverantörer på ett smidigt sätt, samt medhög Precision.För att lösa Balcos problem vid ankomstkontrollen, så att de enkelt kan rapportera in och få en god översiktav ankommit gods, har projektgruppen kommit fram till tre olika alternativa lösningar. Dessa lösningar ärstreckkodssystem, RFID-system och manuell identifiering. För bästa resultat, och användning avidentifikationssystemen, är det troligtvis nödvändigt att ett MPS-system implementeras.Slutsatsen och rekommendationerna innefattas främst av en lösning med ett streckkodssystem, men där denprimära nyckeln till ökad Precision och kontroll av ankommande gods ligger i att införa ett väl fungerandedatasystem..

This thesis evaluates and compares the retrieval effectiveness of the two search engines Google Scholar and Scirus, which both specialises in indexing scholarly material on the web as well as journal articles. Thirty search queries are used and the first twenty retrieved documents for each query are examined for topical relevance and scholarly content. The search queries are based on legitimate information needs taken from a scientific questionbox on the web. Queries are expressed with advanced search operators and are the same for both search engines. Precise relevance criteria are set up and a binary scale is used when judging.

The purpose of this masters thesis is to evaluate the retrieval effectiveness of three different search engines on the Internet: Google, Yahoo! and MSN Search. We have constructed 25 topics and queries with varying contents, in order to test the width of the search engines as much as possible. In every search we have evaluated the first 20 hits in each of the search engines. The measures we have used are Precision and cumulated gain. Precision is based on a binary scale and cumulated gain is calculated by means of a non-binary relevance scale.

Syftet med denna studie var att undersöka vilket av tre ansiktsområden och vilken av tre ålderskategorier som skattas med högst Precision vid åldersbedömning av mäns ansikten. Studien syftade även till att jämföra Precisionen för de olika ansiktsområdena med Precisionen för hela ansikten. Totalt 154 försöksdeltagare skattade åldern på fotografier av mäns ansikten i ett experiment. Bilderna var indelade i tre olika ålderskategorier (15-24, 35-44, 55-64) och visades vart och ett såväl helt som i tre vertikalt indelade områden (ögon och ögonbryn, näsa samt mun och haka). Av de olika ansiktsområdena skattades ögonområdet med högst Precision (m = 6.50 års avvikelse från biologisk ålder).

Different techniques for Precision agriculture have been available during the last decade. Some of them are more widely used than others. The main purpose of this thesis was to investigate the different attitudes to Precision agriculture that exists among farmers and advisors in Sweden. Eight advisors and sixteen farmers were asked for their opinion of a number of specific techniques for Precision agriculture, such as yield-mapping, Precision liming, the Yara Nitrogen Sensor and site-specific fertilization with phosphorous and potassium. They were also asked to describe the way in which the counselling in Swedish agriculture is used and also about it's importance for the adaptation of new techniques. The high costs are mentioned to be one of the most important reasons why Precision agriculture hasn't been more widely spread. Several farmers refer to their farms as too small to bear the costs that come with the techniques. The individual interest for technique among the potential users plays an important role.

In this Masters thesis we investigate query expansion using an electronic thesaurus. We formed 30 topics from the library and information science field. For each topic three searches were made in the bibliographic database LISA Library and Information Science Abstracts via CSA Cambridge Scientific Abstracts. LISA has an electronic thesaurus attached. We used this thesaurus to form baseline queries, baseline queries expanded with synonyms, and baseline queries expanded with both synonyms and related terms.

This Master?s thesis is a comparative study of information retrieval results between three distinct search strategies in simulated automatic query expansion in a bibliographic database. Our purpose is to investigate which of the search strategies score the most effective Precision and to what extent the same relevant documents are retrieved (overlapped). A thesaurus attached to the database is used to select appropriate descriptors for the baseline query formulations which subsequently are expanded with hierarchical relations. The search strategies are s1: A baseline query with two or three descriptors, s2: The baseline descriptors combined with at least one Narrower Term, s3: The baseline descriptors combined with Narrower Term and at least one Broader Term.

The aim of this thesis is to answer whether a group of databases dedicated to selling books or a group of databases dedicated to lending books is more efficient. The measurements used to determine the efficiency of the two kinds of databases are Cumulated Gain and Precision in modified versions. The inquiry has been conducted thus that the same 18 queries have been put forth to six databases and these results have consequently been judged according to relevance on a 4-graded scale by five respondents. The rankinglevels have then been merged to one average value per respondent and ranking. These values have then been used to determine CG/iCG/nCG and P@n per query, rank 1-10, per database and per group (the groups being STORE (BUTIK) and LIBRARY (BIBLIOTEK).