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  • 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

Current awareness services for web-based scholarly information sources

Mafa, Ntsopana Carol 12 January 2009 (has links)
M. Inf. / It has become increasingly difficult for end-users to locate, select and organise information published via the World Wide Web. This is largely due to the scattered nature of the Web and its ever-increasing use as publishing infrastructure. More scholarly information is also being published in multimedia format through the Web. Throughout the years, current awareness services and later Selective Dissemination of Information (SDI) have provided the means for scholars to keep abreast of the literature in print sources. Today such information is also published via the Web, hence scholars need to have a mechanism to keep abreast of the information published in digital format. Research was conducted to investigate guidelines scholars could use to stay abreast of new Web content. The investigation employed both a literature survey and an empirical method of collecting research data. The literature survey was conducted to establish trends in current awareness services and SDI, the use of the Web for disseminating and retrieving digital information, the impact of the Web on the scholarly communication process and current methods for keeping up to date with Web content. Empirical research in the form of structured interviews was executed to establish the needs of scholars regarding the spectrum of current awareness services that provide Web-based sources. The findings obtained from structured interviews and by means of the literature survey were used to develop a set of guidelines scholars could use to stay abreast of information published via the Web.
12

Online community portals for enhanced alumni networking

Barnard, Zenia 13 August 2008 (has links)
A university’s alumnus grouping is one of its most valuable assets in terms of its potential financial, strategic and social contribution towards the credibility and longevity of the institution. The goodwill and support of a primary stakeholder grouping such as the alumni is crucial to the aspirations of a Higher Education institution wanting to prosper in a fast-changing and highly competitive market. Alumni members have the capacity to assist in strategically positioning a tertiary institution as a market leader in the South African Higher Education Sector (SAHES) by means of representation on the institutional council and their involvement in networking, lifelong learning, career services, mentoring, fundraising and community development activities. In light of the restructuring and transformation that this sector has undergone since 1994, building and maintaining valuable relationships with alumni stakeholders of tertiary institutions in South Africa has become a new and more difficult challenge. The integrated network approach of relationship management could give an institution the opportunity to create a win-win situation for all stakeholders involved. Information technology has had a significant impact on the power structure and relationship between organisations and their publics, stakeholders and the media. It has become extremely difficult for organisations to define and segment these audiences as, for example, Internet audiences are widely spread across geographical, cultural, and economic boundaries. This makes the packaging and dissemination of information a much more challenging task, as information needs to be generic enough to be commonly understood, but should also be personalised in such a way that it still addresses the different audience segmentations effectively. However, the identification and profiling of target audiences is critical for successful information dissemination, as this knowledge will guide the information managers within organisations in compiling relevant (to the target audiences) content and packaging the information in a way that is most suitable to the needs and resources of the targeted group. At the core of developing an alumni network is a secure database with an interactive Web-based platform allowing the alumni management teams and members to disseminate and share relevant information freely. According to a research project (the first phase of a longitudinal study) about disseminating information to UJ alumni, 98,2% of the respondents indicated that they wanted to have contact with the UJ Alumni Relations Office (Barnard, Rensleigh & Niemann, 2005). The majority of respondents, 86,7%, indicated that they preferred to receive the information via electronic mail or from the website. The research findings indicated that the UJ alumni stakeholder group is part of a privileged section of the South African population in the global and national digital divide. Thus, the alumni management of UJ had the opportunity to explore and use the information-sharing options offered by online and digital technologies. This research project forms the second phase of the ongoing research project in an attempt to discard the “one-size-fits-all” notion with regard to information sharing with the alumni stakeholders of tertiary institutions in South Africa. The aim of this research project is to determine the extent to which an online community portal could manage the information needs of alumni stakeholders in the SAHES, using the alumni of the University of Johannesburg as a case study. Establishing an online (virtual) community Web portal for UJ alumni will support a customised approach in terms of information content, dissemination, context and commerce. An online community environment will offer alumni opportunities to re-establish contact with peers and nurture relationships with one another through frequent social interaction (chat). Such a facility would allow and encourage conversations that are of value to all stakeholders, as these communities can exist beyond the boundaries of location and time. They foster not only the potential to promote business-to-business (B2B) and business-to-consumer (B2C), but also consumer-to-consumer (C2C) interaction and could even exploit the possibilities of human-resource placements. The research consisted of an extensive literature review followed by a quantitative empirical survey and a qualitative discussion forum. The purpose of the literature review was to establish a theoretical framework in order to lay a solid foundation from which the empirical research was conducted. The different components of the research problem were discussed as well as possible variables that could influence the research problem. The restructuring of the South African Higher Education Sector was investigated, with specific focus on the University of Johannesburg and its alumni stakeholder group, taking an in-depth look into the value that an alumni stakeholder group holds for an institution. The management of alumni information needs was discussed, using Web-technology as focal point. Online community portals were defined, emphasising the benefits that this information tool could have for Higher Education alumni. As part of the quantitative study, an empirical survey was conducted in April 2006 among the alumni of the University of Johannesburg to determine their information needs concerning an online community portal, and the content required of such an online community model. A total number of 10 380 questionnaires was distributed to graduates of the University of Johannesburg at the Autumn Graduation ceremonies. The questionnaire consisted of four sections, namely Section A: Biographical Information, Section B: Online Activities, Section C: Alumni Information Services and Section D: Alumni Community Needs. In total, 1 703 questionnaires were completed and returned by these graduates to the UJ Alumni Relations Office. In addition, a qualitative discussion forum was conducted among 35 alumni management representatives from fourteen SAHES institutions during August 2006. The representatives indicated how information was disseminated electronically to alumni target audiences and their opinions towards alumni online community portals were tested. The research results indicated that an online community portal, could manage, to a great extent, the information needs of alumni in the South African Higher Education Sector (UJ alumni case study). Consequently, a prototype was proposed for an online community portal for SAHES alumni that would have a significant impact on the information and communication methods used to build alumni networks, for the benefit of both the alumni stakeholders and the Higher Education institutions in South Africa. Although the alumni of the University of Johannesburg served as a case study for this research project, the proposed prototype could be tailored to the needs of other alumni organisations throughout the South African Higher Education Sector. In terms of inter-institutional collaboration, this research project offers an opportunity to liaise and share information with other alumni organisations of the SAHES. This could result in successfully identifying a best practice model for managing the information needs of alumni stakeholder groups of tertiary institutions in developing countries, which is significantly different from the philanthropic approach to these stakeholder groups in first world countries. As a result, the employment sector of Higher Education institutions in South Africa could gain from the research outcomes, as the proposed prototype will offer an ICT and Web-based solution which could be applied for the mutual benefit of the relevant stakeholder groups and the institutions. / Prof. Chris Rensleigh
13

Disseminação seletiva da informação no contexto das organizações aprendentes: proposta de um modelo digital integrado ao SIGAA na Universidade Federal do Rio Grande do Norte

Amaral, Marjorie Rosielle Silva do 24 September 2014 (has links)
Made available in DSpace on 2015-05-14T12:20:14Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 2467233 bytes, checksum: cdb5c57cec93a26a30ee1bfbe0f087e2 (MD5) Previous issue date: 2014-09-24 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / It presents the peculiarities of selective dissemination of information, such service contributes to sharing personalized informational content, considering the importance of information, seen as a key element in modern society that inspires and challenges its management. Its main goals were investigate the construction the model of Selective Dissemination Information integrated to SIGAA at UFRN by making an effort for professors to have current, relevant information at his or her service so they can strengthen the construction process of knowledge from the individuals that demand such things. The time frame done in the development literature of this search was between 1978 and 2014, therefore from its conceptual apprehension, it allows better understanding of the dissemination process of information for effective capability of the proposed action. For that, the research assumed a qualitative approach being classified as an explorative type and it was done through the methodological strategy of action research. Interviews were held with the Head of the Library System and the superintendent of information from UFRN, with the intent of collecting information and creating partnerships to the development of service. The faculty coordinators from basic research of Centro de Ensino Superior de Serido (CERES)/UFRN were questioned to identify if these individuals felt difficulties in finding information material about their area of research and if they considered the service relevant to the institution. In regards to the results, the research revealed that the majority of the professors felt some difficulty in finding the articles as well as the essays and/or thesis and they classify the designing of the service as extremely relevant to UFRN. Thus, this action research permitted the engaging construction of three beginning steps of the fundamental service in Souto (2010), which were: the achievement of the proposed diagnosis in the information dissemination in the UFRN scope, the politics definition of service and the achievement of organization planning in the SIGAA service. / Apresenta as peculiaridades da Disseminação Seletiva da informação, serviço que contribui para o compartilhamento de conteúdo informacional personalizado, considerando a importância da informação, vista como elemento chave na sociedade contemporânea e que inspira desafios para sua gestão. Seu objetivo principal foi investigar a construção de um modelo do serviço de Disseminação Seletiva da Informação integrado ao SIGAA na UFRN com vistas a contribuir para que os docentes tenham informações atuais e relevantes ao seu dispor e fortaleçam o processo de construção do conhecimento dos indivíduos que a demandam. O recorte temporal feito na literatura para o desenvolvimento desta pesquisa compreendeu o período de 1978 a 2014, permitindo a partir da sua apreensão conceitual, melhor entendimento do processo de disseminação de informações para uma aplicabilidade eficaz da ação proposta. Para tanto, a pesquisa assumiu uma abordagem qualitativa sendo classificada como do tipo exploratória e realizada por meio da estratégia metodológica da pesquisa-ação. Foram realizadas entrevistas com a Direção do Sistema de Bibliotecas e com a Superintendência de Informática da UFRN, com o intuito de coletar informações e formar parcerias para o desenvolvido do serviço. Foram aplicados questionários com os docentes coordenadores das bases de pesquisa do Centro de Ensino Superior do Seridó (CERES)/UFRN para identificar se estes indivíduos sentiam dificuldades em localizar materiais informacionais sobre suas áreas de pesquisas e se consideravam o serviço relevante para a instituição. Quanto aos seus resultados, as pesquisas revelaram que a maioria dos docentes sente alguma dificuldade para localizar artigos bem como dissertações e/ou teses e classificam a criação do serviço como extremamente relevante para a UFRN. Assim, esta pesquisa-ação permitiu a construção participativa das 3 primeiras etapas do serviço fundamentadas em Souto (2010), que foram: a realização do diagnóstico do processo de disseminação de informações no âmbito da UFRN, a definição da política do serviço e a realização do planejamento da estruturação do serviço no SIGAA.
14

Dissemina??o seletiva da informa??o no contexto das organiza??es aprendentes: proposta de um modelo digital integrado ao SIGAA na Universidade Federal do Rio Grande do Norte

Amaral, Marjorie Rosielle Silva do 24 September 2014 (has links)
Submitted by Marjorie Amaral (mrestrela@hotmail.com) on 2017-03-16T18:57:40Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissemina??oSeletivadaInformacao_2014.pdf: 2467233 bytes, checksum: cdb5c57cec93a26a30ee1bfbe0f087e2 (MD5) / Approved for entry into archive by clediane guedes (clediane@bczm.ufrn.br) on 2017-03-16T19:15:05Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissemina??oSeletivadaInformacao_2014.pdf: 2467233 bytes, checksum: cdb5c57cec93a26a30ee1bfbe0f087e2 (MD5) / Made available in DSpace on 2017-03-16T19:15:05Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissemina??oSeletivadaInformacao_2014.pdf: 2467233 bytes, checksum: cdb5c57cec93a26a30ee1bfbe0f087e2 (MD5) Previous issue date: 2014-09-24 / Apresenta as peculiaridades da Dissemina??o Seletiva da informa??o, servi?o que contribui para o compartilhamento de conte?do informacional personalizado, considerando a import?ncia da informa??o, vista como elemento chave na sociedade contempor?nea e que inspira desafios para sua gest?o. Seu objetivo principal foi investigar a constru??o de um modelo do servi?o de Dissemina??o Seletiva da Informa??o integrado ao SIGAA na UFRN com vistas a contribuir para que os docentes tenham informa??es atuais e relevantes ao seu dispor e fortale?am o processo de constru??o do conhecimento dos indiv?duos que a demandam. O recorte temporal feito na literatura para o desenvolvimento desta pesquisa compreendeu o per?odo de 1978 a 2014, permitindo a partir da sua apreens?o conceitual, melhor entendimento do processo de dissemina??o de informa??es para uma aplicabilidade eficaz da a??o proposta. Para tanto, a pesquisa assumiu uma abordagem qualitativa sendo classificada como do tipo explorat?ria e realizada por meio da estrat?gia metodol?gica da pesquisa-a??o. Foram realizadas entrevistas com a Dire??o do Sistema de Bibliotecas e com a Superintend?ncia de Inform?tica da UFRN, com o intuito de coletar informa??es e formar parcerias para o desenvolvimento do servi?o. Foram aplicados question?rios com os docentes coordenadores das bases de pesquisa do Centro de Ensino Superior do Serid? (CERES)/UFRN para identificar se estes indiv?duos sentiam dificuldades em localizar materiais informacionais sobre suas ?reas de pesquisas e se consideravam o servi?o relevante para a institui??o. Quanto aos seus resultados, as pesquisas revelaram que a maioria dos docentes sente alguma dificuldade para localizar artigos bem como disserta??es e/ou teses e classificam a cria??o do servi?o como extremamente relevante para a UFRN. Assim, esta pesquisa-a??o permitiu a constru??o participativa das 3 primeiras etapas do servi?o fundamentadas em Souto (2010), que foram: a realiza??o do diagn?stico do processo de dissemina??o de informa??es no ?mbito da UFRN, a defini??o da pol?tica do servi?o e a realiza??o do planejamento da estrutura??o do servi?o no SIGAA. / It presents the peculiarities of selective dissemination of information , such service contributes to sharing personalized informational content, considering the importance of information, seen as a key element in modern society that inspires and challenges its management. Its main goals were investigate the construction the model of Selective Dissemination Information integrated to SIGAA at UFRN by making an effort for professors to have current, relevant information at his or her service so they can strengthen the construction process of knowledge from the individuals that demand such things. The time frame done in the development literature of this search was between 1978 and 2014, therefore from its conceptual apprehension, it allows better understanding of the dissemination process of information for effective capability of the proposed action. For that, the research assumed a qualitative approach being classified as an explorative type and itwas done through the methodological strategy of action research. Interviews were held with the Head of the Library System and the superintendent of information from UFRN,with the intent of collecting information and creating partnerships to the development of service. The faculty coordinators from basic research of Centro de Ensino Superior de Serido (CERES)/UFRN were questioned to identify if these individuals felt difficulties in finding information material about their area of research and if they considered the service relevant to the institution. In regards to the results, the research revealed that the majority of the professors felt some difficulty in finding the articles as well as the essays and/or thesis and they classify the designing of the service as extremely relevant to UFRN. Thus, this action research permitted the engaging construction of three beginning steps of the fundamental service in Souto (2010), which were: the achievement of the proposed diagnosis in the information dissemination in the UFRN scope, the politics definition of service and the achievement of organization planning in the SIGAA service
15

Organisational discourses : electronic windows on the work of HIV/AIDS-care organisations

Solomons, Cecily 03 1900 (has links)
Thesis (MPhil (General Linguistics))--University of Stellenbosch, 2011. / Bibliography / ENGLISH ABSTRACT: This thesis is interested in textual features of websites which cover the same kind of content, but represent different organisations and address different kinds of audiences. Specifically, it investigates how information on HIV/AIDS is multimodally represented on the webpages of two non-governmental organisations (NGOs) and two governmental organisations. First, the websites of the national Department of Health and of a provincial Department of Health (Western Province) are scrutinised. Second, the websites of the Treatment Action Campaign (TAC) and Avert, NGOs with a special interest in the prevention and treatment of HIV/AIDS in southern Africa, are investigated. The aim of the research is to consider aspects of layout, the use of multimodality, and the introduction of selected themes and concerns foregrounded in the selected websites. The focus of the thesis is on the transmission of information, particularly through the electronic media, by investigating multimodal elements (language, images, sound, colours) and the layouts of websites, in order to identify possible interpretations which the intended audiences may afford the various texts. The analysis of the sites relies theoretically on the metafunctions developed by Halliday (1985) in his systemic functional linguistic framework. It also refers to an extension of Halliday’s work developed to allow multimodal discourse analysis that considers aspects of visual design and placement, developed by Kress and van Leeuwen (1996, 1998) and Kress (2003, 2005). These approaches focus on text, multimodal elements, the placements thereof on a page as well as the coherence between design of layouts and communicative modes that intend to send a convincing and meaningful message. The thesis also refers to Critical Discourse Analysis in that it considers matters of language and power in internet based communication. It seems that the governmental sites are set up with an audience in mind who needs to be informed on policy matters, while the NGO sites are set up with a more vulnerable audience in mind. One kind of web-communication is likely to alienate the exact people who should be receiving state support and treatment in the face of HIV/AIDS. Another is aimed more at supporting activism against the perceived lethargy of the state. A third supports various charities that reach out to communities where HIV-infection rates are particularly high. The interpretation of multimodal pages requires knowledge of website design for educational purposes as well as information on usage of the internet to get sufficient information. Further, access of the intended audience to electronic communication needs to be considered as this will determine whether the seriousness of the illness and possible prevention or treatment, is well communicated, especially to those who have been identified as most vulnerable to new infection. The thesis finds that electronic communication cannot be the first step to circulating information related to HIV/AIDS. Non-governmental and governmental institutions are still dependent on other forms of media than websites, thus on the printed media, radio and television, and on campaigns or community based projects to communicate with particular audiences. Electronic communication is complex in that it works with various modes (visual, verbal, audial) and requires some technical sophistication from producers and receivers of texts. Theories of communication and discourse analytic methodologies can assist in our understanding of how the internet succeeds or fails in circulating critical health care information. However, to gain a reliable understanding of how the internet functions in transmitting HIV-information to all interest groups, received knowledge of other areas of scholarly interest in health care communication, such as multilingualism, sociology, anthropology, behavioural sciences, cognitive psychology or brain research elaborations, would eventually have to be considered as well. / AFRIKAANSE OPSOMMING: Hierdie tesis stel belang in tekstuele kenmerke van webwerwe wat dieselfde tipe inhoud weergee, maar verskillende organisasies verteenwoordig en verskillende tipes gehore aanspreek. Dit ondersoek spesifiek hoe inligting oor MIV/Vigs multimodaal op die webbladsye van twee nie-regeringsorganisasies (NRO’s) en twee regeringsorganisasies aangebied word. Die webwerwe van die Nasionale Departement van Gesondheid en die Provinsiale Departement van Gesondheid (Wes-Kaap) word eerstens noukeurig ondersoek. Tweedens word die webwerwe van die Treatment Action Campaign (TAC) en Avert, NRO’s met spesiale belang in die voorkoming en behandeling van MIV/Vigs in suidelike Afrika, ondersoek. Die doel van hierdie navorsing is om oor aspekte van uitleg, die gebruik van multimodaliteit en die invoering van spesifieke temas en sake wat op die geselekteerde webwerwe beklemtoon word, na te dink. Die tesis se fokus in op die oordrag van inligting, veral deur die elektroniese media, deur multimodale elemente (taal, beelde, klank, kleur) en die uitleg van webwerwe te ondersoek, om sodoende verskillende moontlike interpretasies wat die bestemde gehoor aan die verskeie tekste mag heg, te identifiseer. Die analise van die webwerwe steun teoreties op die metafunksies wat deur Halliday (1985) ontwikkel is in sy grammatikale raamwerk, Systemic Functional Grammar. Dit verwys ook na ’n uitbreiding op Halliday se werk, wat deur Kress en Van Leeuwen (1996, 2005, 1998) en Kress (2003) ontwikkel is om multimodale diskoersanalise toe te laat wat aspekte van visuele ontwerp en plasing oorweeg. Hierdie benaderings fokus op teks, multimodale elemente, die plasing daarvan op ‘n bladsy en die koherensie tussen die ontwerp, uitleg en kommunikatiewe modusse. Dit kyk na hoe hierdie elemente saamwerk om ’n oortuigende en betekenisvolle boodskap uit te stuur. Hierdie tesis verwys ook na aspekte van Kritiese Diskoersanalise wat betrekking het op kwessies van taal en mag in internetgebaseerde kommunikasie. Dit kom voor asof die regeringswebwerwe ontwerp is met ’n gehoor in gedagte wat oor beleidskwessies ingelig moet word, terwyl die NRO-webwerwe ontwerp is met ’n meer weerlose gehoor in gedagte. Lg. gehoor word ingelig oor die siekte en behandelingsmoontlikhede eerder as beleid. Een soort web-kommunikasie sal waarskynlik dié mense wat juis regeringsondersteuning teen MIV/Vigs behoort te ontvang, vervreem. ’n Ander soort is meer daarop gerig om aktivisme teen die staat se vermeende traagheid te ondersteun. ’n Derde soort kommunikasie ondersteun verskeie liefdadigheidsorganisasies wat uitreik na gemeenskappe waar MIV-infeksiekoerse besonder hoog is. Die interpretasie van multimodale webwerwe vereis kennis van webwerf-ontwerp vir opvoedkundige doeleindes asook inligting oor die gebruik van die internet om voldoende inligting te bekom. Verder moet die bestemde gehoor se toegang tot elektroniese kommunikasie in ag geneem word, aangesien dít sal bepaal of die erns van die siekte en moontlike voorkoming of behandeling, goed weergegee word, veral aan dié wat s besonder blootgestel is en dus hoë risiko loop vir nuwe infeksie. Die tesis bevind dat elektroniese kommunikasie nie die eerste stap kan wees in die proses om inligting oor MIV/Vigs te sirkuleer nie. Nie-regerings- en regeringsorganisasies is steeds afhanklik van ander media as webwerwe, soos drukmedia, radio, televisie en veldtogte of gemeenskapsgebaseerde projekte, om met bepaalde gehore te kommunikeer. Elektroniese kommunikasie is kompleks omdat dit met verskeie modusse (visueel, verbaal, oudio) werk en tegniese sofistikasie van vervaardigers en ontvangers van tekste vereis. Teorieë van kommunikasie en diskoersanalise-metodologieë kan ons insig in hoe die internet daarin slaag (of nie) om belangrike gesondheidsorginligting te versprei. Om egter ’n betroubare begrip vir die werking van die internet as verspreider van MIV-inligting aan alle belange-groepe te verkry, moet kennis van ander areas van belangstelling in gesondheidsorg-kommunikasie, soos veeltaligheid, sosiologie, antropologie, gedragswetenskappe, kognitiewe psigologie of brein-navorsing, ook uiteindelik oorweeg word.
16

Um sistema de disseminação seletiva da informação baseado em Cross-Document Structure Theory

Beltrame, Walber Antonio Ramos 30 August 2011 (has links)
Made available in DSpace on 2016-12-23T14:33:46Z (GMT). No. of bitstreams: 1 Dissertacao Walber.pdf: 1673761 bytes, checksum: 5ada541492a23b9653e4a80bea3aaa40 (MD5) Previous issue date: 2011-08-30 / A System for Selective Dissemination of Information is a type of information system that aims to harness new intellectual products, from any source, for environments where the probability of interest is high. The inherent challenge is to establish a computational model that maps specific information needs, to a large audience, in a personalized way. Therefore, it is necessary to mediate informational structure of unit, so that includes a plurality of attributes to be considered by process of content selection. In recent publications, systems are proposed based on text markup data (meta-data models), so that treatment of manifest information between computing semi-structured data and inference mechanisms on meta-models. Such approaches only use the data structure associated with the profile of interest. To improve this characteristic, this paper proposes construction of a system for selective dissemination of information based on analysis of multiple discourses through automatic generation of conceptual graphs from texts, introduced in solution also unstructured data (text). The proposed model is motivated by Cross-Document Structure Theory, introduced in area of Natural Language Processing, focusing on automatic generation of summaries. The model aims to establish correlations between semantic of discourse, for example, if there are identical information, additional or contradictory between multiple texts. Thus, an aspects discussed in this dissertation is that these correlations can be used in process of content selection, which had already been shown in other related work. Additionally, the algorithm of the original model is revised in order to make it easy to apply / Um Sistema de Disseminação Seletiva da Informação é um tipo de Sistema de Informação que visa canalizar novas produções intelectuais, provenientes de quaisquer fontes, para ambientes onde a probabilidade de interesse seja alta. O desafio computacional inerente é estabelecer um modelo que mapeie as necessidades específicas de informação, para um grande público, de modo personalizado. Para tanto, é necessário mediar à estruturação da unidade informacional, de maneira que contemple a pluralidade de atributos a serem considerados pelo processo de seleção de conteúdo. Em recentes publicações acadêmicas, são propostos sistemas baseados em marcação de dados sobre textos (modelos de meta-dados), de forma que o tratamento da informação manifesta-se entre computação de dados semi-estruturados e mecanismos de inferência sobre meta-modelos. Tais abordagens utilizam-se apenas da associação da estrutura de dados com o perfil de interesse. Para aperfeiçoar tal característica, este trabalho propõe a construção de um sistema de disseminação seletiva da informação baseado em análise de múltiplos discursos por meio da geração automática de grafos conceituais a partir de textos, concernindo à solução também os dados não estruturados (textos). A proposta é motivada pelo modelo Cross-Document Structure Theory, recentemente difundido na área de Processamento de Língua Natural, voltado para geração automática de resumos. O modelo visa estabelecer correlações de natureza semântica entre discursos, por exemplo, se existem informações idênticas, adicionais ou contraditórias entre múltiplos textos. Desse modo, um dos aspectos discutidos nesta dissertação é que essas correlações podem ser usadas no processo de seleção de conteúdo, o que já fora evidenciado em outros trabalhos correlatos. Adicionalmente, o algoritmo do modelo original é revisado, a fim de torná-lo de fácil aplicabilidade
17

Effects of a Selective Dissemination of Information Service on the Environmental Scanning Process of an Academic Institution

Mayberry, Alberta Gale Johnson 05 1900 (has links)
A case study was conducted to document the changes in the attitudes of academic administrators at Langston University with regards to the use of various types of information sources for strategic planning. Environmental scanning of external factors was accomplished for six months by the use of a selective dissemination of information (SDI) service. Pre- and post-assessments of the perceived reliance on, satisfaction with and adequacy of personal and library-type information sources were conducted. Findings indicated the continued reliance on personal sources. No statistically significant changes were found in perceived adequacy levels in the use of library-type materials. The overall satisfaction level for the use of library-type information sources and retrieval methods showed a significant increase. Further study is recommended that will utilize additional information technology and other academic institutions.

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