• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 5
  • 3
  • 3
  • 2
  • 1
  • 1
  • 1
  • Tagged with
  • 15
  • 15
  • 9
  • 8
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

RAPE, MEDIA & MEN A DISCOURSE ANALYSIS OF MYTHS IN WRITTEN MEDIA’S DEPICTION OF SEXUALLY ABUSED MEN

Bruhner, Christian January 2014 (has links)
Män som utsatts för sexuellt våld är ett ämne som erhåller lite uppmärksamhet både inom forskning och i vardagligt tal. Att analysera skriven medias framställning av sexuellt våldsutsatta män har så vitt jag vet inte utförts i en svensk vetenskaplig kontext innan, vilket gör denna studie unik i sitt slag. Studiens primära syfte var att undersöka hur män som utsatts för sexuellt våld framställs i skriven media. Jag ville se huruvida media bekräftar eller förkastar de sociala myterna kring ämnet. Vidare så var målet med studien att ytterligare belysa ämnet för att lyfta upp det för diskussionen och fördjupa förståelsen och kunskapen för ämnet. Fyrtio journalistiska artiklar samlades in genom en systematisk litteratursökning och har utgjort det empiriska materialet i studien som sedan bearbetades genom en form av diskursanalys. De myter som testades var; Män som utsatts för sexuellt våld är extremt ovanligt – framställs som sensationellt och med skepticism, Definitioner om det sexuella våldet mot män – präglas av grovt fysiskt våld, hot, ofta med vapen och droger, Det sexuella våldets könstypiska uppdelning – händelsen framställs som en kontrast mellan femininiteter och maskuliniteter, De efterföljande konsekvenserna – dessa förminskas eller negligeras och offer bemöts negativt av omgivningen. Resultatet visade att myterna till väldigt stor del bekräftades i den mediala framställningen, i synnerlighet ämnets ovanlighet, det fysiska våldet, offerbeskyllningen och det skeptiska bemötandet/rapporteringen. Varför ämnet framställs på ett visst sätt analyseras och presenteras med tidigare forskning som teoretisk bakgrund. / Men who suffered from sexual violence are an issue that receives little attention, both within research and colloquially. Analysing the depiction of sexually abused men in written media has not, as far as I know, been done in a Swedish scientific context before, which makes this study unique in its kind. The primarily aim of this study has been to examine how sexually abused men are depicted in written media. I wanted to see whether the media confirms or rejects the social myths that surround the subject. Furthermore has the ambition with the study been to enlighten the issue to make it a subject for discussion so the knowledge and the understanding can be deepened. The empirical material of forty journalistic articles was gathered in through a systematic literature search and processed via a type of discourse analysis. The tested myths were; Men who suffered from sexual violence are extremely unusual – portrayed as sensational and with scepticism, Definitions of the sexual violence against men – characterized by severe violence, threats, often with weapons and drugs, The stereotypical sex segregation of sexual violence – The event is portrayed as a contrast between masculinity and femininity, The subsequent consequences – are diminished or neglected, the victim is met with negativity by its surrounding. The result showed that de myths were widely confirmed in the depiction of media, especially the phenomenon’s unusualness, the physical violence, the victim blaming and the sceptical approach/reporting. Why the subject is portrayed in a special way has been analysed and presented with the precious research as a theoretical background
12

GoPubMed: Ontology-based literature search for the life sciences

Doms, Andreas 06 January 2009 (has links)
Background: Most of our biomedical knowledge is only accessible through texts. The biomedical literature grows exponentially and PubMed comprises over 18.000.000 literature abstracts. Recently much effort has been put into the creation of biomedical ontologies which capture biomedical facts. The exploitation of ontologies to explore the scientific literature is a new area of research. Motivation: When people search, they have questions in mind. Answering questions in a domain requires the knowledge of the terminology of that domain. Classical search engines do not provide background knowledge for the presentation of search results. Ontology annotated structured databases allow for data-mining. The hypothesis is that ontology annotated literature databases allow for text-mining. The central problem is to associate scientific publications with ontological concepts. This is a prerequisite for ontology-based literature search. The question then is how to answer biomedical questions using ontologies and a literature corpus. Finally the task is to automate bibliometric analyses on an corpus of scientific publications. Approach: Recent joint efforts on automatically extracting information from free text showed that the applied methods are complementary. The idea is to employ the rich terminological and relational information stored in biomedical ontologies to markup biomedical text documents. Based on established semantic links between documents and ontology concepts the goal is to answer biomedical question on a corpus of documents. The entirely annotated literature corpus allows for the first time to automatically generate bibliometric analyses for ontological concepts, authors and institutions. Results: This work includes a novel annotation framework for free texts with ontological concepts. The framework allows to generate recognition patterns rules from the terminological and relational information in an ontology. Maximum entropy models can be trained to distinguish the meaning of ambiguous concept labels. The framework was used to develop a annotation pipeline for PubMed abstracts with 27,863 Gene Ontology concepts. The evaluation of the recognition performance yielded a precision of 79.9% and a recall of 72.7% improving the previously used algorithm by 25,7% f-measure. The evaluation was done on a manually created (by the original authors) curation corpus of 689 PubMed abstracts with 18,356 curations of concepts. Methods to reason over large amounts of documents with ontologies were developed. The ability to answer questions with the online system was shown on a set of biomedical question of the TREC Genomics Track 2006 benchmark. This work includes the first ontology-based, large scale, online available, up-to-date bibliometric analysis for topics in molecular biology represented by GO concepts. The automatic bibliometric analysis is in line with existing, but often out-dated, manual analyses. Outlook: A number of promising continuations starting from this work have been spun off. A freely available online search engine has a growing user community. A spin-off company was funded by the High-Tech Gründerfonds which commercializes the new ontology-based search paradigm. Several off-springs of GoPubMed including GoWeb (general web search), Go3R (search in replacement, reduction, refinement methods for animal experiments), GoGene (search in gene/protein databases) are developed.
13

Result Diversification on Spatial, Multidimensional, Opinion, and Bibliographic Data

Kucuktunc, Onur 01 October 2013 (has links)
No description available.
14

Semi-automated Ontology Generation for Biocuration and Semantic Search

Wächter, Thomas 01 February 2011 (has links) (PDF)
Background: In the life sciences, the amount of literature and experimental data grows at a tremendous rate. In order to effectively access and integrate these data, biomedical ontologies – controlled, hierarchical vocabularies – are being developed. Creating and maintaining such ontologies is a difficult, labour-intensive, manual process. Many computational methods which can support ontology construction have been proposed in the past. However, good, validated systems are largely missing. Motivation: The biocuration community plays a central role in the development of ontologies. Any method that can support their efforts has the potential to have a huge impact in the life sciences. Recently, a number of semantic search engines were created that make use of biomedical ontologies for document retrieval. To transfer the technology to other knowledge domains, suitable ontologies need to be created. One area where ontologies may prove particularly useful is the search for alternative methods to animal testing, an area where comprehensive search is of special interest to determine the availability or unavailability of alternative methods. Results: The Dresden Ontology Generator for Directed Acyclic Graphs (DOG4DAG) developed in this thesis is a system which supports the creation and extension of ontologies by semi-automatically generating terms, definitions, and parent-child relations from text in PubMed, the web, and PDF repositories. The system is seamlessly integrated into OBO-Edit and Protégé, two widely used ontology editors in the life sciences. DOG4DAG generates terms by identifying statistically significant noun-phrases in text. For definitions and parent-child relations it employs pattern-based web searches. Each generation step has been systematically evaluated using manually validated benchmarks. The term generation leads to high quality terms also found in manually created ontologies. Definitions can be retrieved for up to 78% of terms, child ancestor relations for up to 54%. No other validated system exists that achieves comparable results. To improve the search for information on alternative methods to animal testing an ontology has been developed that contains 17,151 terms of which 10% were newly created and 90% were re-used from existing resources. This ontology is the core of Go3R, the first semantic search engine in this field. When a user performs a search query with Go3R, the search engine expands this request using the structure and terminology of the ontology. The machine classification employed in Go3R is capable of distinguishing documents related to alternative methods from those which are not with an F-measure of 90% on a manual benchmark. Approximately 200,000 of the 19 million documents listed in PubMed were identified as relevant, either because a specific term was contained or due to the automatic classification. The Go3R search engine is available on-line under www.Go3R.org.
15

Semi-automated Ontology Generation for Biocuration and Semantic Search

Wächter, Thomas 27 October 2010 (has links)
Background: In the life sciences, the amount of literature and experimental data grows at a tremendous rate. In order to effectively access and integrate these data, biomedical ontologies – controlled, hierarchical vocabularies – are being developed. Creating and maintaining such ontologies is a difficult, labour-intensive, manual process. Many computational methods which can support ontology construction have been proposed in the past. However, good, validated systems are largely missing. Motivation: The biocuration community plays a central role in the development of ontologies. Any method that can support their efforts has the potential to have a huge impact in the life sciences. Recently, a number of semantic search engines were created that make use of biomedical ontologies for document retrieval. To transfer the technology to other knowledge domains, suitable ontologies need to be created. One area where ontologies may prove particularly useful is the search for alternative methods to animal testing, an area where comprehensive search is of special interest to determine the availability or unavailability of alternative methods. Results: The Dresden Ontology Generator for Directed Acyclic Graphs (DOG4DAG) developed in this thesis is a system which supports the creation and extension of ontologies by semi-automatically generating terms, definitions, and parent-child relations from text in PubMed, the web, and PDF repositories. The system is seamlessly integrated into OBO-Edit and Protégé, two widely used ontology editors in the life sciences. DOG4DAG generates terms by identifying statistically significant noun-phrases in text. For definitions and parent-child relations it employs pattern-based web searches. Each generation step has been systematically evaluated using manually validated benchmarks. The term generation leads to high quality terms also found in manually created ontologies. Definitions can be retrieved for up to 78% of terms, child ancestor relations for up to 54%. No other validated system exists that achieves comparable results. To improve the search for information on alternative methods to animal testing an ontology has been developed that contains 17,151 terms of which 10% were newly created and 90% were re-used from existing resources. This ontology is the core of Go3R, the first semantic search engine in this field. When a user performs a search query with Go3R, the search engine expands this request using the structure and terminology of the ontology. The machine classification employed in Go3R is capable of distinguishing documents related to alternative methods from those which are not with an F-measure of 90% on a manual benchmark. Approximately 200,000 of the 19 million documents listed in PubMed were identified as relevant, either because a specific term was contained or due to the automatic classification. The Go3R search engine is available on-line under www.Go3R.org.

Page generated in 0.0475 seconds