Sökresultat:
17550 Uppsatser om Information retrieval - Sida 8 av 1170
Informationssökning i tre olika hypertextstrukturer - ett experiment
The aim of this study was to find out if hypertext structure has any relevance for the efficiency of Information retrieval. An experiment, in which three variants of hypertext structure were compared, was carried out in the autumn of 1998. Three websites with different structures were constructed for this purpose: a sequential version, a hierarchical version and a webcluster version. 44 subjects, all students at the University of Lund, were randomly divided into three groups. Subjects were requiered to answer a number of questions using one of the three versions.
Safe retrieval of nutrients to improve food security
Safe retrieval of nutrients from human excreta to fertilize crops in order to gain adequate yields will increase food security and sustainability in agriculture areas with nutrient-poor fields. Safe and nutritious food will meet the dietary needs of the individual which promotes public health and the ability of an active life. Human excreta should be considered as a resource instead of being assumed as waste. Human faeces and urine is excellent fertilizers which may close the nutrient loop if utilized properly. However, sanitation of the excreta is required to prevent disease transmission by reducing the content of gastrointestinal pathogens such as bacteria, viruses and parasites.
The objective of this study was to in small scale evaluate the sanitation in a combined liquid compost and urea treatment by monitor the inactivation of bacteria and viruses at the combination three start temperatures, 45, 40 and 35 °C, and three additions of urea, 0.5, 0.75 and 1 % and reference, 0 % urea addition.
Praxis och praktik i flerspråkiga tesaurer
A prerequisite of an international exchange of information is multilingual tools for Information retrieval, such as the multilingual thesaurus. There is an ongoing discussion about the construction of, and the guidelines for, multilingual thesauri. In recent years the praxis as defined in ISO 5964 Guidelines for the establishment and development of multilingual thesauri 1985 has been the topic of a scientific discussion. It has been about how equivalence across languages is to be established when it comes to concepts, terms and relational structures. This masters thesis treats the praxis and practice of multilingual thesaurus construction.
Citeringsanalys och citeringsteorier: En kritisk granskning
The purpose of this Masters thesis is to make an outline of different methods and theories within the field of bibliometrics and critically review their strengths and weaknesses. The author studied literature that discussed bibliometric methods and theories. The number of empirical studies that are based on bibliometric methods and theories are numerous and where principally excluded, but some empirical studies were included as part of the argumentation for and against different methods and theories. The author first gives an outline of which methods and theories there are and describes their different strengths and weaknesses. Citation analysis has many different fields of application such as Information retrieval, mapping science, evaluative studies and monitoring literature.
Planering : fallstudie av en mjölkgård
The purpose of this paper is to give examples of different ways of economic planning and
calculation within agriculcture. My aim is to use a couple of them as an explanation of a case
from reality. My choice went to budgetsimulation and balanced scorecard since those are best
suited in this specific case.
In the Information retrieval I present different instruments of economic planning like theory of
cost, budget and productcalculation. The budgetsimulation describes how to use the different
methods in a long term economic planning. The balanced scorecard is also a model of longand
short-term planning but besides the economy planning it?s also a reminder of your
personal goals.
In the model I have used a dairyfarm as a case.
Ett ?bra? intranät ? Ett framgångsrikt exempel på användarcentrerad systemdesign
We live in a stressful world and a demanding society where the ability to quickly adapt is one of the most important and most difficult challenges of today. A fairly new phenomenon called intranets has evolved to meet this challenge, however many examples of corporative intranets are stories about failures and systems with poor usability. This study focuses on how the user oriented approach to systems design affected upon a system development process of an Intranet, solely developed within a company, and how it impacts on the intranets popularity among the employees in the company. The study starts not from the literature but from a survey, which is based upon the Delphi method. Which results were used for further in-depth research about the subject, by interviewing three representatives from the company.
Kartläggning av biblioteks- och informationsvetenskap i Skandinavien - En bibliometrisk undersökning
This paper aims to map and contrast the research front and theresearch base of Library and Information Science (LIS) inScandinavia during 1980-1989 and 2003-2013 from articlespublished in Web of Science.The research questions are:1. How is the research base and research front in LIS inScandinavia between 1980-1989 and 2003-2012 structured?2. What differences can be observed between the two time periods1980-1989 and 2003-2012 with regards to the research base?3.
Google, Yahoo! och Live Search: en evaluering av tre webbsöktjänster
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.
Områdessökning i geografiskt associerad data
This thesis considers the problems associated with searches in insufficiently geographically tagged data. The thesis was carried out at Booli Search Technologies AB, a company developing a search engine for the Swedish real estate market.The aim of the thesis is to identify some areas of possible improvements of the company?s existing technical platform, perform a benchmarking among similar services, suggest possible solutions and lastly, build a prototype from one of the suggested solutions.The thesis starts out with defining the problems that the search engine faces: some areas are not possible to perform searches on, the users are not presented with the full search result that they expect, some results are placed incorrectly on the map associated with the search results and results are also not described with enough geographical information. These problems are due to the fact that the data retrieved at the indexing stage in the company?s Information retrieval process are insufficient and incomplete.As a result of a benchmarking process and after discussing the results, severalinteresting solutions were identified.
Platsbaserad sökning : En metod fo?r filtrering och sortering av so?kresultat
Informationsso?kningar av olika slag sker dagligen va?rlden o?ver och so?kresultatet kan ma?nga ga?nger vara sa? stort att anva?ndarna har sva?rt att veta vilka so?kresultat som a?r relevanta. I denna uppsats har syftet varit att underso?ka hur so?kresultat kan filtreras och sorteras med hja?lp av platsbaserad so?kning fo?r att det ska bli mer relevant fo?r anva?ndaren. Genom litteraturstudie och intervjuer har det blivit mo?jligt att ta reda pa? hur ett so?kresultat skulle kunna filtreras och sorteras fo?r att mo?ta anva?ndarnas fo?rva?ntningar.
Ämnesindexering av spelfilm
The aim of this thesis is to examine possibilities concerning subject access to fiction film, i.e. appropriate ways to describe fiction film for subject retrieval. Problems regarding subject indexing in general, and subject indexing of fiction film in particular, are identified, as well as the uniqueness of fiction film and film genres. Four types of subject aspects are discussed: form and genre, fictitious characters, setting, and general topics. Several guidelines, form- and genre lists, and subject headings lists are examined and treated as potential indexing tools.
Arbetsprocess för materialanskaffning vid Forsmarks Kraftgrupp AB
This thesis has been made on behalf of Forsmarks Kraftgrupp AB and is the final part of the education of Bachelor of Engineering in ? Innovation, production and logistics atMälardalens Högskola.Forsmark nuclear power plant is located in Östhammars municipality at the coast of Uppland. The three nuclear reactors in Forsmark together produces approximately one-sixth of Sweden?s electricity consumption each year.The background of this study is that a large number of requests come to the purchasing department with incomplete information. Usually it is in the description of what is to be acquired as the information is incomplete, but also in knowing when Quality Control-functions (QC) is supposed to be used.The aim of this work is to describe and analyse the material acquisition process.
Hur söker användare kinesiskt material i LIBRIS: ?????
The purpose with this thesis is to research what function the National Library Catalogue of Sweden (LIBRIS) has as an information resource for Chinese language material. How is LIBRIS used as an information resource seen from the point of view of a users specific language need. This will be exemplified through an empirical survey of three user groups with different prerequisites concerning their knowledge in Chinese. Group A were beginners and had studied Chinese for one year. Group B were advanced students who were studying their third year of Chinese.
Testeffekten som medel för att förbättra läsförståelse?
Swedish school children exhibit deteriorating knowledge results in terms of reading comprehension. Previous research shows that a method to increase the level of knowledge is the use of evidence-based learning techniques. Test based learning generates what is commonly referred to as a test effect, which proved to strengthen the relationship between learning and memory, as well as being applicable to various test formats. The purpose of this study was to investigate whether test based learning, in terms of learning english words leads to increased performance in a reading comprehension test, more specifically a cloze test. The study was based on a within-group design and was conducted three times over four weeks.
Weblogindex: En studie av weblogindex utifrån Lancasters processmodell över traditionell indexering.
Many new electronic publication systems have arisen in the past few years, one of them is the weblog. In 1999 there were 23 weblogs, today there are millions thus a need for organisation has appeared, both special metadata and subject indexes have been invented and created. Due to the large amount of the latter we have in this thesis decided to concentrate on those close by the Scandinavian weblogindexes. A more international perspective would however have been possible, as very little is written on the topic. We have looked at these selected weblogindexes, trying to determinate whether they agree with F.