966 resultados para Internet Technologies
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"August 1985."
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Mode of access: Internet.
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Mode of access: Internet.
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"OTA-TM-E-32"--P. [4] of cover.
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Summer 1978.
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Mode of access: Internet.
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Mode of access: Internet.
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"OTA-E-246"--P. [4] of cover
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"GAO-01-313."
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Reuse of record except for individual research requires license from Congressional Information Service, Inc.
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One of the obstacles to improved security of the Internet is ad hoc development of technologies with different design goals and different security goals. This paper proposes reconceptualizing the Internet as a secure distributed system, focusing specifically on the application layer. The notion is to redesign specific functionality, based on principles discovered in research on distributed systems in the decades since the initial development of the Internet. Because of the problems in retrofitting new technology across millions of clients and servers, any options with prospects of success must support backward compatibility. This paper outlines a possible new architecture for internet-based mail which would replace existing protocols by a more secure framework. To maintain backward compatibility, initial implementation could offer a web browser-based front end but the longer-term approach would be to implement the system using appropriate models of replication. (C) 2005 Elsevier Ltd. All rights reserved.
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New communication technologies (websites and email) are believed to hold promise for delivering population health interventions. However, studies on internet-delivered physical activity (PA) programs have encountered difficulties in engaging and retaining participants. Recent PA research has focused on peoples’ perceptions of the local environment and how this relates to PA participation. This study investigated the potential of: 1) reaching people living in a regional community via a locally-based Internet Service Provider (ISP), and 2) using data on the local environment to design a PA intervention relevant to the individual. An online survey was conducted via the ISP’s website over 12 days. ISP clients (approximately 9,000) were invited to participate in the survey via electronic newsletter and direct email. Data on motivational readiness and environmental correlates of PA were collected. 820 surveys were completed, of which 797 were valid (response rate = 9%). Participants had a mean BMI 27.6±8.3, were 55% male, 56% aged >45 years, 57% worked fulltime, and 36% were in the early stages of motivational readiness for PA. Most reported positive perceptions of the local environment in terms of aesthetics, convenience, access, traffic and safety. However, over half did not know about or use local PA facilities. Over 70% were somewhat to extremely interested in having access to a PA promotion website. These data suggest that promoting PA via a locally based ISP is feasible and appealing to some people living in a regional community, but also highlight some of the challenges of using this technology to deliver population health interventions.
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O projeto de pesquisa Características comunicacionais do documentarismo na Internet: estudo de caso site Porta Curtas apresenta as características encontradas na exibição de documentários na Internet com as atuais tecnologias disponíveis. Tal gênero audiovisual migrou para a Internet junto a outros gêneros audiovisuais, como o telejornalismo, a telenovela e os filmes de ficção, todos com características específicas. Foi definido como corpus do trabalho o site Porta Curtas, especializado em produção audiovisual e que disponibiliza aos usuários da Internet diversas produções documentais e ficcionais gratuitamente. Espera-se, a partir deste trabalho, que adota a metodologia estudo de caso do site Porta Curtas, especializado em exibição de vídeos dos gêneros ficção e documentário, provocar novos estudos no sentido de possibilitar um maior desenvolvimento de estudos sobre a produção de documentários para as novas tecnologias que estão cada vez mais presentes no cotidiano dos processos comunicacionais, possibilitadas pelos efeitos da convergência tecnológica, assim como oferecer à comunidade científica detalhes analíticos sobre o objeto da pesquisa.(AU)