Bibliometric law used for information retrieval

Zipf s law was used to qualify all the key-words of documents in a data set. This qualification was used to build a graphical representation of the resulting indicator in each document. The graphical resolution leads to a document dispatch in a three dimensional space. This graphical representation was used as an information retrieval tool without using any keyword. The presentation of a case study is intemet available. The graph is drawn in Virtual Reality Markup Language (VRML) allowing a dynamic picture which is linked to a Database Management System (FreeWais). The experimentation was drawn to get a first impression of documents data set by querying without any keyword

Uso da Análise de Redes Sociais para Exploração de Dados de Revistas Científicas

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On the significance of data bases keywords for a large scale bibliometric investigation in fundamental physics

International audienceWe present an automatized bibliometric investigation applied to the field of fundamental research in physics. We briefly describe the scientific context motivating this study and the statistical method used for analyzing the data. We discuss in more detail how we adapted our investigation to the questions motivating this study, namely the identification of relevant groups working in a well defined subfield of physics. We next present the results of our investigation. We particularly focus on an analysis of Index and Free terms, as obtained from the INSPEC data base we used for performing the bibliometric investigation. We discuss the relevance of Index and Free terms by means of a separation between “Noise”, “Interesting” and “Trivial” entries. We show that Index and Free terms exhibit somewhat different behaviors when considered as distributions in terms of frequencies of occurrence in the references. We show the particular relevance of Free terms in this analysis. This may be connected to the emerging nature of the subfield of physics under consideration. This shed an interesting light on the respective importance of Index and Free terms, as entries of data bases, in particular in the case of rapidly evolving scientific domains

Midiametria: monitoramento do desempenho de uma organização na mídia utilizando metodologias e softwares bibliométricos.

A função de clipping, de acompanhar o que sai na imprensa, está presente em organizações nos cinco continentes. A função de análise deste noticiário é realizada normalmente por empresas de consultoria de mídia. O Sistema de Análise do Clipping Eletrônico integrou as duas áreas e agregou inteligência ao processo de comunicação empresarial da Embrapa. Uma metodologia simples e eficiente para a democratização da informação na organização. Este trabalho é um exercício de união entre os campos da Ciência da Informação e da Ciência da Comunicação. Ele coloca em bases sólidas uma bem fundamentada e robusta metodologia de análise bibliométrica para a análise dos Meios de Comunicação de Massa, a Midiametria.Resumo em INTERNATIONAL CONFERENCE ON INFORMATION SYSTEMS AND TECHNOLOGY MANAGEMENT - CONTECSI, 4., 2007, São Paulo. São Paulo: TECSI/USP/FEA/EAC, 2007

Effect of gaze on postural responses to neck proprioceptive and vestibular stimulation in humans

We studied the effect of gaze orientation on postural responses evoked by vibration of neck dorsal muscles or by galvanic stimulation of the vestibular system during quiet standing in healthy humans. Various gaze orientations were obtained by different combinations of horizontal head-on-feet (−90, −45, 0, 45, 90 deg) and eye-in-orbit (−30, 0, 30 deg) positions. The instantaneous centre of foot pressure was recorded with a force platform.With a symmetrical position of the vibrator relative to the spine, neck muscle vibration elicited a body sway in the direction of the head naso-occipital axis when the eyes were aligned with it. The same result was obtained both during head rotations and when the head and trunk were rotated together.For lateral eye deviations, the direction of the body sway was aligned with gaze orientation. The effect of gaze was present both with eyes open and eyes closed. After long-lasting (1 min) lateral fixation of the target the effect of gaze decreased significantly.Postural responses to galvanic vestibular stimulation tended to occur orthogonal to the head naso-occipital axis (towards the anodal ear) but in eight of the 11 subjects the responses were also biased by the direction of gaze.The prominent effect of gaze in reorienting automatic postural reactions indicates that both neck proprioceptive and vestibular stimuli are processed in the context of visual control of posture. The results point out the importance of a viewer-centred frame of reference for processing multisensory information

Mineria tecnológica: maneras múltiples para explotar los recursos de la ciencia, tecnología e información

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