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17550 Uppsatser om Information retrieval - Sida 10 av 1170

Kunskapens konstellationer: om ämnesanalys och tvärvetenskaplighet

The aim of this study has been to discuss ideas of knowledge within classification theory and subject analysis in the light of theories of fundamental changes in the production of scientific knowledge. Guiding questions have been: How have the conditions of knowledge production changed? How has interdisciplinarity as part of this development evolved? What assumptions lie behind theories of classification and subject analysis? How do these stand in relation to the alleged changes in the production and understanding of science? Three works about the changing conditions for knowledge production and the growth of crossdisciplinarity have been presented and discussed. These works stress the loosening up of boundaries between traditional knowledge domains and open up for discussions about how to organize knowledge production in the light of these changes. In the study it is argued that their works also could open up for discussions about the way knowledge is organized for retrieval purposes.

Arbetsminneskapacitet: relation till verbalt flöde och indirekt minne för inhiberat material

Processing information in complex everyday life recruites different abilities than limited storage capacity. Working memory, the central executive and inhibition are constructs that have been used to describe this ability of adaptation. This paper investigates the connection between working memory capacity and performances in tasks closely associated to real life situations, i. e. verbal fluency tasks.

Barnbibliotekariers förmedlingsarbete med lättläst barnlitteratur

The purpose for this Masters thesis is to describe childrens librarians work in supplying literature to children with emphasis on easy-reader materials. Our main questions are: · What do librarians believe characterizes an easy-reader book, and what do they base their decision on when classifying a book as easy-to-read? · How have the libraries in our study solved the hands-on difficulties associated with easy readers childrens literature? · Which factors do librarians consider to be important when supplying literature to children that are not used to reading or are not good readers? The theories we have used are Aidan Chambers Reading Circle and Karner Smidts view on the librarians professional roles when supplying literature. We have used a case study method, which means that we have gathered information through observation, objective papers and interviews. This has been done at six libraries.

Test av immunohistokemiska markörer för differentialdiagnostik mellan Spitz nevus och melanom

Spitz nevus was first described by Sophie Spitz in 1948 as juvenile melanoma. The lesion is a benign melanocytic tumor, which consists of epiteloid- and spindelshaped cells. Histological is spitz nevus difficult to distinguish from malign melanomas and spitzoid melanomas. Loss of symmetry, loss of maturation in the deep component, nuclear polymorphism and hyper chromatic nucleus are features which can be found in melanomas. Some of these features are often seen in spitz nevus.

All the Web, Alta Vista och Google: en effektivitetsstudie av tre söktjänster på webben.

The purpose of this essay is to perform an evaluation regarding retrieval performance of three web search engines. The search engines included are All the Web, Alta Vista and Google. These have been tested using ten queries within different subject areas chosen by the author. The first twenty hits for each question have been analyzed for relevancy. Relevancy is judged on a three-point scale; 0, 0,5 and 1 where 0 goes to irrelevant and inactive or duplicate documents, 0,5 point goes to partially relevant documents and 1 point goes to highly relevant documents.

Standardisera mera? : Z39.50 mellan enighet och mångfald

Z39.50 is a standard protocol designed to create an interface between diverse computer databases for diverse information needs. Since it has to be adjustable it is also complex and demands a certain degree of expertise when being set. However, the aim of this paper is not to make a theoretical description but to examine certain conditions in practice. From the perspective of Swedish research libraries two principal hypotheses are examined: 1) the implementation of a given technology (Z39.50) is primarily influenced by social circumstances, and 2) the way in which the technology is implemented will bias the results of Information retrieval. For this examination we need a framework of theories concerning the relationship between technological development and society, organisational theories and database theories.

Referenser i informationsåtervinning: utvärdering av en sökstrategi för citationsindex

In this essay, a search strategy for citation index is studied. The strategy, which is essentially a citation cycle, starts with documents retrieved by a subject search, wherefrom new documents are identified following the network of citations backwards and forwards in time. Based on the theory of polyrepresentation, the strategy exploits overlaps between cognitively different interpretations of the same documents in order to automatically select references seed documents used as a starting point for the forward chaining. The purpose of the investigation is to evaluate the retrieval effectiveness of the search strategy and to find out whether the strategy can be used to expand a subject search with the help of the network of references in order to retrieve new relevant documents. Two questions are formulated: 1a.

Musik och indexering i folkbiblioteken

This paper follows an analytical and critical line of reasoning concerningindexing and retrieval of music in Swedish public libraries. The focus ofthe discussion is based on the terms included in the subject heading list ofthe Swedish Classification System. The empirical study is performed inthe context of online catalogues in the public libraries of Örebro andGävle. The theoretical background relies on the indexing theory ofProfessor Frederick W. Lancaster.

Kontinuerlig RFID-detektering för batteridrivna system

This report deals with RFID systems and how to detect nearby tags with the Mifare standard using only a microcontroller and an antenna circuit.The aim was to investigate whether there was any possibility to continuously search for a nearby tag for a system operated with batteries without compromising   the lifespan of the battery. At this time the system would take too long time to wake up and look for a tag to give a satisfactory battery lifespan, which should be done a couple of times every second.The report has two issues, namely:Is it possible to direct the microprocessor to detect and identify a nearby tag after the Mifare standard?What hardware is required for this to be possible?As the research method to provide answers to the above questions an action research was used. This approach has meant that the group worked on Information retrieval, examined existing solutions, tested their own solutions and documented the results.The group examined an existing solution that can search for nearby tags with minimal energy consumption. An antenna circuit was built that was connected to the processor.

Att skapa en snabb, sökdriven e-handelssajt : en studie med backend-lösningar i fokus

AbstractThis study examines the technologies appropriate in developing back-and solutions for search-driven user interfaces of e-commerce sites. The study is based on existing research in search-driven user interfaces of e-commerce sites from a design point of view, but instead the focus of this study lies within a back-end perspective. This choice of focus is a result of the gap that was encountered within research and other literature when it comes to general advice in how e-commerce sites best should build back-end solutions to support search driven user interfaces. The technologies that have been examined and compared are traditional relational databse management systems (RDMS) and the newer so called No-SQL database management systems, and also traditional search engines and the newer variant s of search engines. The study concludes that in some cases it is appropriate to combine traditional and newer technologies when it comes to databases, while the comparison of search engines indicates that there are some newer search en gines that have the ability to meet more of the needs that can be identified on the back-end solutions.Primary data consists of interviews made ?face to face? with experts on the subject and questionnaires addressed to selected e-commerce companies via e-mail.

Kommunikation och samarbete. En studie av bibliotekariers och lärares förhållningssätt gentemot varandra gällande samarbete

The purpose of this paper has been to study the relationships and attitudes of a few teachers and librarians as to their co-operation in a combined public and upper secondary school library and to find out what circumstances there may be to exert an influence on their work. The paper has been based upon qualitative interviews with upper secondary school teachers and librarians as well as on studies of literature relating to our issue. We believe there may be different approaches to the learning process, as these are the relations and attitudes of two professions from different trades. That is why our point of departure has been Roger Säljö's theory about learning and, in our analysis, a few of Jean Donham van Deusen's ideas of joint planning and flexible timetabling. All respondents agreed that co-operation could be better, but the teachers were of the opinion that it must not interfere with their time.

Att utföra kravprioritering med kravprioriteringsmetoder - en studie om dess genomförande och hinder under

Prioritisation of software requirements is a critical part of the development of software. Whichrequirements and in which order they will be developed is one of the main tasks that requirementprioritisation supports.There are different ways that a requirement prioritisation can be used, for example alone or in agroup and with different methods.The purpose of this report is to map out how you can carry out a requirement prioritisation alonewith different types of prioritisation methods and how you solve the problems that can arise whenprioritisting requirements. This is done by documenting the use of three different types of methodsthat can be execute alone. The methods are "100-dollar test", "Ranking" and "Top-tenrequirements".To be able to prioritise requirements, you need to establish which requirements you shall prioritise.The paper retrieves this information by interviewing stakeholders in the system and analysing theresult of the interviews and the execution of the requirement prioritisation.Three problems arose during that work and I present solutions on these problems. The problemswere 1) equivalent requirements when using the "100-dollar test", 2) low differentiation gradebetween the prioritised requirements in the "100-dollar test" and 3) that the requirements that wereprioritised weren't classified before the prioritisation, which leads to inaccuracies in the resultingprioritisation.The solution to the problems that the paper presents is to increase the amount of distributable unitsin the "100-dollar test" to 1000 per requirement, suggestions of classes of the requirements andthe combination of the methods "100-dollar test" and "ranking" to bypass the equivalentrequirements.The report is written in Swedish.Nyckelord: GoTRIS, requirements retrieval, requirements analysis, Viktoria Swedish ICT,requirements prioritisation, requirements, 100-dollar test, ranking, top 10 requirements..

Affärsinkubatorn i Innovationsprocessen : En studie i de roller som uppstår då en affärsinkubator participerar i en innovationsprocess

Purpose: This study`s purpose is to investigate the role of a business incubator in the strategic decision situations during the process of a new venture startup. It also aims to explore the methods and instruments the incubator and its advisers applies during the process.Methodology: This study is built on the basis of a hermeneutic approach with qualitative method and abductive design. The empirical material collected consist of interviews from two case studies and secondary data collection from different related sources.Theoretical perspective: The theory in the study consists of the elements of previous research on innovation processes and entrepreneurship. To analyze the data, models and theories related to decision making, incubation, process theories and organizational theories.Empirical foundation: The empirical material consists of interviews and data from two completed case studies. Additionally consist a relatively large part of the empirical data out of a comprehensive Information retrieval from various secondary sources such as internet, newsletters and annual reports.Conclusion: The assay was able to detect not just one, but a variety of roles that the incubator occupies at different stages of the innovation process.

Dokumentationsskyldighet : Anpassning av dokumentationsskyldigheten i svensk rätt utifrån Base Erosion and Profit Shifting

Purpose: This study`s purpose is to investigate the role of a business incubator in the strategic decision situations during the process of a new venture startup. It also aims to explore the methods and instruments the incubator and its advisers applies during the process.Methodology: This study is built on the basis of a hermeneutic approach with qualitative method and abductive design. The empirical material collected consist of interviews from two case studies and secondary data collection from different related sources.Theoretical perspective: The theory in the study consists of the elements of previous research on innovation processes and entrepreneurship. To analyze the data, models and theories related to decision making, incubation, process theories and organizational theories.Empirical foundation: The empirical material consists of interviews and data from two completed case studies. Additionally consist a relatively large part of the empirical data out of a comprehensive Information retrieval from various secondary sources such as internet, newsletters and annual reports.Conclusion: The assay was able to detect not just one, but a variety of roles that the incubator occupies at different stages of the innovation process.

Information som inspiration : en studie av yrkesverksamma konstnärers behov och användning av information

The main purpose of this essay is to investigate professional artists experience of the need and use of information in their creative work. I have collected the material through qualitative interviews with four professional artist working with different materials and techniques. One of the results of the study is that the artists first of all used information as a source of inspiration in their creative work. They gathered their information from various scources, for example; pictures, exhibitions, visual arts, books and novells, depending on what project they are working with. Other important information scources were colleges, especially for the technical information need.

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