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In this paper I present the architecture of system that can be used for real time exploration and management of large medical volumetric datasets. The new state of the art solution presented in this paper is an example of visual data management system. System prototype evaluation proved that it is possible to use low-powered (and cheap) up-to-date mobile devices with programmable GPUs as the remote interfaces for exploration of large volumetric medical data. The implementation was done with high-level programming language that enables portability between different hardware models. The lack of lossy compression enables to display high quality medical images visualizations without any simplifications and noises in frequency domain. The prototype of system is capable to remotely render and send to a client (for example cell phone or tablet) rendered data with frequency 30 fps with limited resolution during interaction. One second after the interaction is finished client machine receives full resolution image. The evaluation of the system was performed on volumetric computed tomography angiography image with approximate size 5123 voxels. 相似文献
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This study reports on the use of a microsystem for evaluation of photodynamic therapy (PDT) procedures on the "mixed" (carcinoma-normal) cultures. Balb/3T3 (normal mouse embryo) and A549 (human lung carcinoma) cells were tested in separated and "mixed" cultures. Interactions and migration of cells cultured together were observed. The PDT procedures were examined in the hybrid (PDMS/glass) microsystem which contains cell culture microchambers integrated with network of microchannels. We investigated that the number of dead cells after PDT procedures is dependent on the kind of cell culture. Moreover, the influence of the carcinoma cells on the viability of normal cells in the "mixed" culture was observed. 相似文献
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In 1996, Acadia University became the first Canadian university to adopt a plan of a fully computerized campus. This plan called for progressively equipping each student and faculty member with a personal laptop computer, introducing computer technology into most courses, providing students and faculty with ubiquitous access to the computer network everywhere on the campus, and integrating the technology into the undergraduate curriculum and campus life. In this paper, we describe the context in which this decision was made, discuss the nature of the experience and the involvement of faculty and students in the process, the logistic problems, and impact on faculty and students, successes and disappointments. We also present selected research projects undertaken by faculty within this framework, and outline plans for the future. 相似文献
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Kazimierz ZieliŃski Tomasz Werka W. Jeffrey Wilson Eugeniusz Nikolaev 《Learning & behavior》1995,23(4):438-446
Effects of extended training (nine sessions, 50 trials each) on two-way avoidance response latencies were studied. For each rat, auditory and visual warning signals (CS) were presented on separate trials, either according to a Gellermann series or in 25-trial blocks. Intermittent presentation of the two kinds of trials yielded shorter latencies and higher levels of avoidance performance in response to the noise CS than in response to the darkness CS. Presentation of trials in blocks revealed stronger response-eliciting properties of stimuli presented during the second half of the session than of those presented during the first half. A significant decrease of avoidance performance in the early portions of the delay period, an index of inhibition of delay, was obtained on auditory trials presented in the second half of the sessions. Results indicate that strong fear of the warning signal is required for inhibition of delay of avoidance responses. 相似文献
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Lars Owe Dahlgren Gunnar Handal Tomasz Szkudlarek Manfred Bayer 《Higher Education in Europe》2007,32(4):305-316
This paper addresses the feasibility of higher education in relation to the demands of work life. The research is a comparative study involving four European countries: Sweden, Norway, Poland, and Germany. The research focuses on the view of freshmen, senior students and later graduates in Psychology and Political Science. Data were obtained by semi‐structured interviews, which were subjected to qualitative analyses. The results indicate that higher education, with some exceptions, seems to produce a discipline‐based identity among the students. These findings may be indicative of the value for employability of classical academic generic skills. 相似文献
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AbstractThe world of radical football fans across Europe is dominated by anti-system groups. While their sympathies in the west of the continent are mostly leftist, the ultras in the east tend to display right-wing attitudes. Poland makes a particularly interesting case in point, as the most intensive and emotional ideological criticism of the processes of ‘transformation’ and ‘modernisation’ is to be observed at the stadiums. As a result of historical developments, opposition against the system in the country can only be expressed using Catholic–patriotic symbolism, which in the case of collective actions of radical football supporters has produced sociocultural and aesthetic effects not to be found anywhere else in Europe. 相似文献
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Zbigniew Semadeni 《Educational Studies in Mathematics》1984,15(4):379-395
The celebrated principle of the permanence of the rules of calculation is contrasted here with another principle, called concretization permanence principle (c.p.p.). Both apply to situations where some arithmetical operation known to children for numbers of a certain kind is to be extended so as to include further numbers (these numbers are already known to the children). In such a case, c.p.p. advises that a suitable concretization schema and a suitable paradigmatic example be chosen and then extended so as to include numbers of the broader domain; students should explore what the given concept becomes in the new situation and in this way find values of the extended operation for a sequence of examples with fixed concretization (or fixed concretization schema) and varying numbers. 相似文献
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Facing economic pressure, social tensions, global competition and low public confidence, governments can no longer afford to address increasingly complex and interdependent public goals alone or step back and rely on the markets. Instead, they have to work through networks of state and non-state actors to organize existing resources, knowledge and capabilities in the pursuit of public goals. The new paradigm increasingly relies on Information and Communication Technology (ICT) to connect actors to the network and to build, manage and sustain relationships between them. We refer to such ICT-enabled networks as Government Information Networks. This article serves as an introduction to the current issue of Government Information Quarterly on Government Information Networks. The issue comprises twelve cases of such networks selected from the papers submitted to the 5th International Conference on Theory and Practice of Electronic Governance, ICEGOV2010, held in Beijing, China, October 2010. The article also presents a conceptual framework for public administration networks, and applies the framework to describe, analyze and compare the cases, thus relating the volume to the Public Administration literature. 相似文献