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    ABSTRACT: Previous studies have proposed various uses of wireless sensor networks, including military, surveillance, environmental monitoring, and health care applications. Sensor network coverage is a major concern because it reveals how well an area is monitored. However, the number of sensor nodes in a monitored area must be sufficient for achieving full spatial coverage. When the monitored area cannot be fully covered because of few sensor nodes, continually monitoring the specific area is a considerable challenge. Full temporal coverage, in which every point of a given monitored region is monitored within a specific time interval, can be achieved if mobile sensors are precisely scheduled. In this study, an energy balance mechanism is designed to maintain full temporal coverage in a monitored area. Furthermore, the monitoring lifetime is lengthened. The experimental results revealed that the proposed mechanism supports full temporal coverage and improves the quality and lifetime of monitoring.
    Ad Hoc Networks 10/2014;
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    ABSTRACT: The knowledge, attitude, and behavior intentions of elementary school students about airline cabin safety before and after they took a specially designed safety education course were examined. A safety education program was designed for school-age children based on the cabin safety briefings airlines given to their passengers, as well as on lessons learned from emergency evacuations. The course is presented in three modes: a lecture, a demonstration, and then a film. A two-step survey was used for this empirical study: an illustrated multiple-choice questionnaire before the program, and, upon completion, the same questionnaire to assess its effectiveness. Before the program, there were significant differences in knowledge and attitude based on school locations and the frequency that students had traveled by air. After the course, students showed significant improvement in safety knowledge, attitude, and their behavior intention toward safety. Demographic factors, such as gender and grade, also affected the effectiveness of safety education. The study also showed that having the instructor directly interact with students by lecturing is far more effective than presenting the information using only video media. A long-term evaluation, the effectiveness of the program, using TV or video accessible on the Internet to deliver a cabin safety program, and a control group to eliminate potential extraneous factors are suggested for future studies.
    Evaluation and program planning 10/2013; 43C:27-37.
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    ABSTRACT: On the main island of Taiwan, a higher risk of scrub typhus infection has been reported in endemic clusters in Southeastern Taiwan and in mountainous township areas. However, research on health care problems associated with scrub typhus in Taiwanese ethnic peoples is limited. This study employs spatial analysis of areal data to determine spatial features related to scrub typhus and the four main Taiwanese ethnicities: Hoklo, Hakka, Mainlander, and aboriginal communities, respectively. We used a GWR spatial method to analyze the local regressed relationships between scrub typhus incidence and ethnic community percentage in 349 townships in Taiwan, and the subsequent spatial regressed resultants and local parameter estimates were compared between two periods of 2004 and 2008 by kappa statistics. In the GWR models, the spatial regressed relationships of scrub typhus incidences and the Hoklo communities showed significant and negative parameter estimates in numerous locations, showing clusters in Southeastern and Southwestern Taiwan, and areas of the central and southern mountainous townships. Both Hakka and Mainlander communities in the mountainous townships showed less-regressed clusters with scrub typhus prevalence. However, clusters of Aboriginal populations were positively correlated with scrub typhus in highly infected mountainous areas and in Southeastern Taiwan. The kappa value results and the comparisons of local parameter estimates in the 349 townships in Taiwan between 2004 and 2008 indicated that the incidence of scrub typhus in the Hoklo communities was substantial, in the Hakka communities was fair, in the Mainlander communities was slight, and in the aboriginal communities was moderate, respectively. The aboriginal communities have been closely associated with higher risks of scrub typhus in the mountainous townships and in the southeastern portion of Taiwan.
    Global journal of health science 05/2013; 5(3):101-14.

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Pattern Recognition. 01/2000;
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Pattern Recognition 10/2000; 33:1701-1712.
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