• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.6
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• pp.627-635
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• 2017

Modern warfare is gradually changing into a network war, and information electronic warfare is also progressing. In modern war, electronic warfare is all military activity concerned with electromagnetic field use, such as signal collecting, communication monitoring, information analysis, and electronic attack. The one key function of signal collecting for enemy signal analysis, direction finding, collects the signal radiated from enemy area and then calculates the enemy direction. This paper examined the Watson-Watt algorithm for an amplitude direction finding system and CVDF algorithm for phase direction finding system and analyzed the difference in the direction finding accuracy between in the clean electromagnetic field environment and in the real operating field environment of electronic warfare system. In the real field, the direction finding accuracy was affected by the reflected field from the surrounding obstacles. Therefore, this paper proposesan enhanced direction finding process for reducing the effect. The result of direction finding by applying the proposed process was enhanced above $1.24^{\circ}$ compared to the result for the existing process.

• Journal of Hospice and Palliative Care
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• v.19 no.4
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• pp.322-330
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• 2016

Purpose: This study investigated long-term care hospital nurses' knowledge and practice of pain management and their attitudes towards the job with an ultimate aim to provide fundamental information for development of a pain education program. Methods: A cross-sectional survey was carried out with 120 nurses from four long-term care hospitals. Nurses' knowledge of and attitudes towards pain management was measured using a tool developed by Watt-Watson. To examine their pain management practice, an instrument was developed based on the pain management guidelines used by the long-term care settings. Results: For pain management knowledge, the participants gave an average of 26.2 (${\pm}13.10$) correct answers out of 40 questions. The most frequently missed question was one about subjectivity of pain, "Patients' physiological and behavioral reactions to pain hint at the presence and intensity of pain" (89.2%), and 56.7% of the nurses believed that increasing tolerance for a narcotic analgesic means addiction. Regarding attitudes towards and practice of pain management, 80.2% of the nurses used placebos to patients who complain about pain often. Conclusion: This study revealed poor level of pain management knowledge of and attitude among long-term care hospital nurses. This might negatively affect their pain management practice. From the educational perspective, nurses should be provided with education on pain management education with emphasis on the nature of pain and misuse of placebo drugs.