• 융합신호처리학회논문지
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• 제23권4호
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• pp.216-221
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• 2022

4차산업혁명은 사회 전반에 걸쳐 디지털 혁신으로의 전환을 가속화하고 있으며, 제조업에서는 스마트공장을 비롯해 4차산업혁명 기반 제조업 혁신을 위한 노력이 이어지고 있다. 제조업에서의 4차산업혁명 기술의 접목은 AI, 빅데이터, IoT, 클라우드, 로봇 등을 활용해 기존 자동화에서 업그레이드된 생산설비 데이터 수집 및 분석시스템 구축과 제품 불량 원인 파악 및 불량률을 최소화하기 위한 기술개발이 요구된다. 본 논문에서는 생산설비 현장에서의 전력, 환경, 설비 상태 데이터를 IoT 디바이스를 통해 수집하고, 수집한 데이터를 클라우드 컴퓨팅 환경에서 실시간으로 수치화하여 나타내고 위젯을 활용하여 MQTT기반 실시간 인포그래픽 형태로 표시할 수 있는 시스템을 구현하였다. IoT 디바이스로부터 전송된 실시간 센서 데이터를 Rest API 방식으로 클라우드 서버에 저장하고, 대시보드에서 데이터를 원격에서도 모니터링이 가능함은 물론 시간별, 일자별로 분석이 가능하였다.

• 한국ITS학회 논문지
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• 제16권5호
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• pp.134-143
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• 2017

고속도로의 경우 해당구간에 버스전용차로, 휴게소, 졸음쉼터 등이 존재할 경우 다수의 통행시간 그룹이 존재할 수 있다. 기존 대부분의 구간통행시간 추정연구에서는 낮은 표본 수집 상태에서 하나의 대표 통행시간(정규분포 가정) 그룹을 가정하고, 특정범위를 벗어난 경우 이상치로 판단하여 제거한 후 구간 통행시간을 추정하였다. 하지만, 고속도로와 같이 해당구간에 버스전용차로, 휴게소, 졸음쉼터 등이 존재할 경우 통행시간 분포는 정규분포가 아닌 쌍봉 또는 다봉 형태를 보일 것이다. 따라서 기존의 추정방법론을 적용할 경우 왜곡된 결과를 초래할 가능성이 있다. 이러한 문제를 해결하기 위하여 첫째, 샘플수가 부족한 상태에서도 신뢰할 수 있으며, 둘째, 다수의 통행시간 그룹 중 일반차로를 이용하면서 휴게소를 이용하지 않은 대표 통행시간 그룹을 선정하고, 선정된 통행시간 그룹의 개별 통행시간 자료를 이용하여 대표 통행시간을 추정할 수 있는 방법론을 제안하였다.

• Structural Engineering and Mechanics
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• 제2권3호
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• pp.257-267
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• 1994

Motions of an unsymmetric rigid body on a rigid floor subjected to earthquake excitations with special attention to coefficient of friction are investigated. Motions of a body in a plane are classified (Ishiyama 1980) into six types, i.e. (1) rest, (2) slide, (3) rotation, (4) slide rotation, (5) translation jump, (6) rotation jump. Based upon the theoretical and experimental research work special attention is paid to the sliding of a body. The equations of motions and the behavior of coefficient of friction in the time of floor excitation are studied. One of the features of this investigation is the introduction and estimation of the "time dependent" coefficient of friction. It has been established that the constant kinetic coefficient of friction $${\mu}(kin){\sim_\sim}0.8{\mu}(stat)$$ does not give the appropriate results. The method for the estimation of the friction coefficient variation during the time is given.

• Clinical and Experimental Reproductive Medicine
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• 제13권2호
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• pp.181-185
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• 1986

To estimate the penile blood flow changes during artificial with erection intracorporeal papaverine injection, we injected 99 m Technitium-Human Serum Albumin via antecubital vein simultaneously and calculate the radioisotope activity of the penis using computerized Gamma Camera. We classified the results into 3 groups according to the transit time, erection persistent time and venous index in 67 impotence patients. We defined the arteriogenic impotence with the delayed transit time (more than 600 seconds) in 13 patients and venogenic with the shortened erection persistant time (less than 200 seconds) and decreased venous index (less than 0.8) in 11 patients. The rest of them (43 patients) were regarded as equivocal impotence, probably nonvasculogenic or psychogenic.

• 셀메드
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• 제8권1호
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• pp.4.1-4.3
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• 2018

The purpose of this article was to examine the effects of reed pipe music listening on fatigue recovery. A great number of the moderns are suffering from mental and physical exhaustion these days. It was well known for leading to cause various diseases and health problems. A reed pipe is completely natural and a basic instrument. As everyone knows, spending time in nature also helps you feel better and refreshable. From old times, we rested in the bosom of nature. The author think reed pipe music is one of the most beautiful and useful gifts presented by nature to humans. Listening reed pipe music is a good way to value and enjoy the purity of nature. Also, you can find peace and stillness, and relax and rest in the woods. That way, we could feel the throbbing pulse of life in nature and we have gotten some solace and rest from natural healing power. The author think listening reed pipe music is a nice approach to sharing nature, as well as communicating with it. Therefore, the author think listening to reed pipe music is a wonderful way to recovery fatigue and you can truly relax in nature. It will heal us rest and feel better and a reed pipe music is nature-friendly music that gives you relax and heals you to recovery fatigue.

• 대한간호
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• 제31권2호
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• pp.70-85
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• 1992

Relaxation technique is an independent nursing intervention used in various stressful situations. The concept of relaxation must be explored for the meaning given by the people in their traditional thought and philosophy. Korean relaxation technique, wanting to become culturally acceptable and effective, is learning to recognize and develop Korean concepts, experiences, and musics of relaxation. This study was aimed at discovering Korean concepts, experiences and musics of relaxation and contributing the development of the relaxation technique for Korean people. The subjects were 59 mursing students, 39 hospitalized patients, 61 housewives, 21 rural residents and 16 researchers. Data were collected from September 4th to October 24th, 1991 by interviews or questionaires. The data analysis was done by qualitative research method, and validity assured by conformation of the concept and category by 2nursing scientists who had written a Master's thesis on the relaxation technique. The results of the study were summerized as follows; 1. The meaning of the relaxation concept; From 298 statements, 107 concepts were extracted and then 5 categories "Physical domain", "Psychological domain", "Complex domain", "Situation", and "environment" were organized. 'Don't have discomforts, 'don't have muscle tension', 'don't have energy(him in Korean)', 'don't have activities' subcategories were included in "Physical domain". 'Don't have anxiey', 'feel good', 'emotional stability', 'don't have wordly thoughts', 'feel one's brain muddled', 'loss of desire' subcategories were included in "physical domain" 'Comfort body and mind', 'don't have tension of body and mind', 'be sagged' 'liveliness of thoughts' subcategories were included in "Complex domain". 'Rest', 'sleep', 'others' subcategories were included in "Situation domain". And 'quite environment' & 'comfortable environment' subcategories were included in "Environmental domain". 2. The experiences of the relaxation; From 151 statements, 59 experiences were extracted. And then 9 categories-at rest after physical activities, after problem solving, fancy, bathing in the bed, situation, rest, particular time, others-were organized. 3. The musics of the relaxation; From 229 statements, 108 musics were extracted. and the 9 categories- Western classical music, semi classical music, Korean song, Korean popular classical music, song, western popular sonhg, hymn, characteristics of music, others - were organized. In conclusion, There are some differences between Korean concepts, experiences and musics of relasation and western concepts, experiences and musics of relaxation.

• 대한예방한의학회지
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• 제10권1호
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• pp.95-107
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• 2006

This study was explore the level of Yangseng by certain elderly people in Dalian, china. The subject of this study is(randomly) selected Dalian residents over 65 years-old. We used a formultaed questionnaire for this research during the period from October 2004 to November. 266 subjects in total answered to the questionnaire. The analyses are as follows: 1. Man does more Exercise Yangseng than woman. Elderly with spouse has better Total of Yangseng, Exercise Yangseng, Seasonal Yangseng, Sex life Yangseng than single elderly. Compare to elderly living with family other than their spouse, single elderly has better Total of Yangseng, Diet Yangseng, Activities and rest Yangseng, Exercise Yangseng, Sex life yangseng. 2. Educated elderly has better life than illiterate in every aspects except Diet Yangseng and Seasonal Yangseng. Elderly who does not belive in any religion has better Activities and rest Yangseng and Seasonal Yangseng. Religious elderly has better sleep yangseng than irreligioius elderly. Elderly with occupation has better Total of Yangseng, Activities and rest Yangseng, Exercise Yangseng and Sex life Yangseng. 3. Elderly who support himself of the living expense has better Sleep Yangseng, and elderly who support himself with his sons and daughters has better Morality Yangseng, Exercise Yangseng, Seasonal Yangseng and Sex life Yangseng. Elderly who has time to spare has better life than elderly who has bo leisure in Total of Yangseng and other 8 sub-factors.

• 조명전기설비학회논문지
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• 제20권7호
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• pp.14-20
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• 2006

본 연구는 위치지정 중첩 화상표시 구동방식에서 표시방전 유지펄스의 휴지기간 폭에 대한 방전특성을 실험한 것이다. 실험결과, 표시방전은 벽전하 뿐만 아니라 공간전하의 영향도 강하게 받는다는 것을 알았다. 휴지기간 바로 다음에 나오는 첫 번째 표시방전은 휴지기간에 대한 의존도가 높으며 두 번째 표시방전은 의존도가 매우 낮았다. 첫 번째 표시방전이 다소 불충분해도 어느 정도이상 벽전하가 축적되기만 하면 두 번째 표시방전은 안정적으로 유도될 수 있으나 공간전하의 영향을 고려하면 휴지기간의 폭은 $30[{\mu}s}]$ 이내가 바람직하다. 또한 휴지기간의 폭이 $30[{\mu}s}]$까지는 약 12[V]의 균일한 표시방전 전압의 동작마진을 얻을 수 있었다.

• Archives of Plastic Surgery
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• 제46권2호
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• pp.122-128
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• 2019

Background The masseter nerve is a useful donor nerve for reconstruction in patients with established facial palsy, with numerous advantages including low morbidity, a strong motor impulse, high reliability, and fast reinnervation. In this study, we assessed the results of masseter nerve-innervated free gracilis muscle transfer in established facial palsy patients. Methods Ten patients with facial palsy who received treatment from January 2015 to January 2017 were enrolled in this study. Three patients received masseter nerve-only free gracilis transfer, and seven received double-innervated free gracilis transfer (masseter nerve and a cross-face nerve graft). Patients were evaluated using the Facial Assessment by Computer Evaluation software (FACEgram) to quantify oral commissure excursion and symmetry at rest and when smiling after muscle transfer. Results The mean time between surgery and initial movement was roughly 167.7 days. A statistically significant increase in excursion at rest and when smiling was seen after muscle transfer. There was a significant increase in the distance of oral commissure excursion at rest and when smiling. A statistically significant increase was observed in symmetry when smiling. Terzis' functional and aesthetic grading scores showed significant improvements postoperatively. Conclusions Masseter nerve innervation is a good option with many uses in in established facial palsy patients. For some conditions, it is the first-line treatment. Free gracilis muscle transfer using the masseter nerve has excellent results with good symmetry and an effective degree of recovery.

• 인터넷정보학회논문지
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• 제22권6호
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• pp.91-97
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• 2021

미국은 CSfC(Commercial Solutions for Classified Program) 제도를 통해 진화하는 사이버공격에 대응하기 위해 국가기관이 민간 상용보안제품을 신속히 국가관에 도입할 수 있도록 공인된 안전성 평가 및 인증을 수행하고 있다. CSfC 프로세스에 등록된 상용보안제품은 신속한 승인 프로세스를 거쳐 국방기관에서 사용할 수 있으며 중복된 평가 없이 상용보안제품을 승인한다. 승인된 보안제품은 국방정보시스템 구현에 필요한 시간, 비용, 승인 프로세스로 인한 비용을 절감할 수 있다. 본 연구는 국방에 도입하기 위해 미국 NSA(National Security Agency)에서 제시한 네트워크 보안 아키텍처 MSC(Multi-Site Connectivity), MA(Mobile Access), Campus WLAN, DAR(Data at Rest) 4종에 대한 보안통제 항목을 분석하였다.