6 resultados para Universal equations

em ReCiL - Repositório Científico Lusófona - Grupo Lusófona, Portugal


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The ISO norm line 9241 states some criteria for ergonomics of human system interaction. In markets with a huge variety of offers and little possibility of differentiation, providers can gain a decisive competitive advantage by user oriented interfaces. A precondition for this is that relevant information can be obtained for entrepreneurial decisions in this regard. To test how users of universal search result pages use those pages and pay attention to different elements, an eye tracking experiment with a mixed design has been developed. Twenty subjects were confronted with search engine result pages (SERPs) and were instructed to make a decision while conditions “national vs. international city” and “with vs. without miniaturized Google map” were used. Different parameters like fixation count, duration and time to first fixation were computed from the eye tracking raw data and supplemented by click rate data as well as data from questionnaires. Results of this pilot study revealed some remarkable facts like a vampire effect on miniaturized Google maps. Furthermore, Google maps did not shorten the process of decision making, Google ads were not fixated, visual attention on SERPs was influenced by position of the elements on the SERP and by the users’ familiarity with the search target. These results support the theory of Amount of Invested Mental Effort (AIME) and give providers empirical evidence to take users’ expectations into account. Furthermore, the results indicated that the task oriented goal mode of participants was a moderator for the attention spent on ads. Most important, SERPs with images attracted the viewers’ attention much longer than those without images. This unique selling proposition may lead to a distortion of competition on markets.

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Marshal McLuhan’s prophetic vision of the global village is about to be realized. If we are aware of the fact that mass communication reduces the dimensions of our world and makes it more unified and universal, we should take this into consideration when planning the Universal Museum and the language that should be used in it. As curators, educators and museum staff we should not ignore the fact that the spectator/viewer is drawn to the exhibits not only by their own merit, but also guided and assisted by verbal messages, i. e. Labels, brochures. Catalogues etc. Hence, the crucial question is what we, the museologists, use as a means of communication when preparing for a Universal Museum. Should we use pictorial semiotics? This may be a partial solution, which is mainly restricted to objects that can be manipulated and moved by the visitor, as is the case in most of the technological museums. But since the range of objects on display at museums is vast and varied - fine art, archaeological finds, ethnographic objects etc., it may not be the answer to the whole spectrum of exhibits. Dr. Ludwig Lazarus Zamenhof, being an optimist, hoped that by introducing Esperanto to the multi-lingual world population, humanity would be able to bridge and diminish the gap of linguistic differences, thus creating a better understanding between the international communities. Unfortunately this vision was not realized. Esperanto was and still is an utopian and esoteric phenomenon. The barriers between nations still exist although, as mentioned earlier, mass media do help, in some ways, to reduce them.

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Whatever the other characteristics of the universal museum, education must be one of its core functions. That is, education both of regular visitors and those who are not but who are members of the local, regional or national communities served by the museum. In this sense, universal refers to making the museum accessible to all: accessible physically and intellectually. This relates to what I mean by education. It is far broader than what takes place between teachers and pupils in a formal setting. Education is also about providing environments where people will be inspired or provoked to know, to question. To reflect about themselves and the wider human and natural world. A universal museum should be a great facilitator of these learning processes. In this paper I shall focus on five ways in which there can be integration of educational opportunities in the universal museum. For examples to illustrate these themes I shall draw on practices in a small sample of museums in Europe and the USA.

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Nas últimas décadas tem-se verificado um aumento bastante acentuado da utilização de modelos in vitro e in silico para a obtenção de dados que permitem aumentar a eficácia de programas de desenvolvimento de novos fármacos. Actualmente são utilizados dois tipos de modelos para descrever a farmacocinética de compostos químicos em função do tempo: modelos empíricos farmacocinéticos e modelos farmacocinéticos baseados na fisiologia (PBPK). Modelos PBPK assumem que o corpo humano interage com os compostos químicos como um sistema integrado, pelo que um evento que ocorre numa zona do corpo poderá influenciar um evento a ocorrer noutra zona, aparentemente distinta. Estes modelos assumem que o organismo humano é constituído por “compartimentos” que representam fisiologicamente os órgãos, tecidos e outros espaços fisiológicos. Para a correcta utilização destes modelos é necessário determinar a estrutura do modelo e as suas características, escrever equações que o caracterizem, bem como definir e estimar os parâmetros deste. Estes modelos têm vindo a ser usados no campo toxicológico e farmacêutico cada vez com maior frequência. No futuro poder-se-ão transformar numa ferramenta universal.

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O ambiente cultural e científico em Portugal nos primeiros anos do nosso século não era brilhante.A cultura científica e técnica estavam perto da estagnação.As instituições que a elas se dedicavam eram escassas. As publicações nesta área eram também poucas e de qualidade vária. Uma das publicações de maior longevidade era o Boletim de Obras Públicas e Minas órgão da Associação dos Engeneheiros civis (que também congregava os engenheiros militares) e que tem hoje continuidade na Ordem dos Engenheiros.Uma análise, ainda que breve, do Boletim de Obras Públicas e Minas da primeira década do nosso século dá-nos conta da quase inexistência de inovações científicas e técnicas produzidas por portugueses. E certo que são divulgadas as estrangeiras. Mas a discussão ao nível interno, está ainda centrada na questão dos transportes, sobretudo dos Caminhos de Ferro.