역률 개선 장치를 이용한 마이크로프로세서의 교육적 활용방안

정태선,장석구,심재명 大田産業大學校 2002 한밭대학교 논문집 Vol.19 No.-

As increasing the power demands, we can take the advantage in reduction of power loss, voltage drop, loss of transformers and distribution line, while we use reasonably the energy which is limited by the insufficient supply of energy resources and the high power rates. So industrial field is increasing the facilities of capacitor bank for active power and the reduction of the power loss. This paper improve the working domain by searching the optimal value of Xc in load circuit, as detecting different between voltage phase and current phase which is supplied to load by using PT and CT. Also, this paper can aid learners understand easy Power factor measurement and improving method by using phase relation between voltage and current, compose method of capacitor bank, and processor on the educational field.

부산 서구 저탄소 녹색도시사업을 통한 지역환경 개선 및 활성화 방안 연구

정숙진, 윤성환, 우신구 신라대학교 부산학연구센터 2012 부산연구 Vol.10 No.-

전 세계의 환경문제인 기후변화에 적극적으로 대응하기 위해 새로운 국가 비전인 저탄소 녹색도시을 견인할 수 있는 지역·권역별 녹색도시화 특성화 방안을 제시함으로서 기후변화에 대응할 수 있는 방안을 모색하고자 한다. 부산 원도심인 서구 충무동·남부민동의 풍부한 자연자원과 다양한 역사·문화자원을 활용한 저탄소 녹색성장과 환경보호를 양립시켜 새로운 성장동력과 지역경제 활성화로 도시재생방안을 마련한다. 녹색기술을 활용한 경사지 주거재생, 도심형 항만재생, 원도심 상권재생의 3대 목표를 설정하고 6대 핵심 전략을 중심으로 지속가능한 녹색도시를 조성한다. 서구 저탄소 녹색도시 선도사업에서 노후화된 주거시설을 개선하기 위한 하우스 프로젝트을 통해 지역성에 맞는 주거모델을 제시하고 친환경 기술요소를 이용하여 자체에너지 생산, 그린 인프라를 이용하여 생태복원 및 바람길을 연결하여 미기후 조절을 가능하게 한다. 그리고 도심형 항만재생에서는 공동어시장에 발생하는 유기성폐기물을 바이오매스시스템 구축을 통하여 바이오에너지를 생산하며 해양친수공간 조성과 천마산을 연결하는 그린네트워크를 형성하여 부산의 대표적인 저탄소 녹색성장 명품도시로 조성한다. By suggesting the green city characterization measure for each region and zone that can lead the low carbon green city which is a new national vision in order to actively cope with the climate change, the global environment issue, we aim to seek for the measure to build up low carbon green city suitable for local characteristics. With low carbon green growth and environment protection by using abundant natural resources and various historical/cultural resources in Seo-gu Chungmu-dong and Nambumin-dong, the old downtown of Busan, the city reclamation measure can be prepared based on a new growth driving force and local economic vitalization. It is a general measure related to easing and adapting to climate change like water circulation, including setting up the three main goals like reclamation of residence on slopes, urban ports and business districts in old downtown based on green technology, and the six core strategies like establishing system of carbon reduction through using low carbon energy, improving the transportation structure through introducing green traffic system, having water/resource circulation system through low carbon circulation resource, having green construction system through applying green technology and environmentfriendly materials, building up ecotype greens based on the carbon absorption system through management of greens and urban forest and creating green community through private and public green partnership. It is possible to control microclimate by connecting wind ways, restoring ecology through using green infrastructure and producing its own energy based on environment-friendly technical elements as also suggesting residental models suitable for local characteristics based on the house project to improve obsolete residential facilities with low carbon green city leading project in Seo-gu. For the urban port reclamation, bio-energy is produced by building up biomass system through organic waste generated in the joint fish market. As also forming waterfront and green network connecting with Mt. Cheonma, it can be the representative low carbon green growth city in Busan.

이상적인 측정환경이 아닌 장소에서 Headphone Audiocup의 부착유무가 현장 근로자의 청력검사에 미치는 영향

채경석,구정완,이원철 가톨릭대학교 산업의학센터 2000 韓國의 産業醫學 Vol.39 No.4

The purpose of this study was to assess the effect of headphone audiocup. The subjects were composed of workers of noise-exposed population. The noise level of workplace was over 85 dB. They were examined otoscopic test and audiometry of 1,000 Hz and 4,000 Hz. The data were analysed according to wearing audiocups for 612 subjects in -59 years of age and major results are as follows : 1.Hearing thresholds of group audiocups were significantly decreased than that of non-audiocups in -19, 20-29, 40-49 and 50-59 years of age on left ear of male workers and in -19, 20-29 years of age on left ear of female for 1,000 Hz. 2.Hearing thresholds of group audiocups were significantly decreased than that of non-audiocups in 20-29, 40-49 and 50-59 years of age on right ear of male and in -19, 20-29 and 40-49 years of age on right ear of female for 1,000 Hz. 3.Hearing thresholds of group audiocups were significantly decreased than that of non-audiocups in 20-29, 30-39 and 40-49 years of age on left ear of male worriers and in 20-29 years of age on left ear of female for 4,000 Hz. 4.Hearing thresholds of group audiocups were significantly decreased than that of non-audiocups in 20-29, 30-39 and 50-59 years of age on right ear of male and in 20-29 and 40-49 years of age on right ear of female for 4,000 Hz.

콘덴서제조공장의 전력부하설비의 고조파에 관한 연구

김득중,심재명,장석구 大田産業大學校 2002 한밭대학교 논문집 Vol.19 No.-

Lately power semiconductors such as thyristor devices is widely used in electric power load installation. The use power semiconductors is easy to be a major cause of harmonics generation. In this paper, voltage and current harmonics is to be mesured in twenty places which is selected from power receiving board of the capacitor mannufactory. The results is analysised by experimental observation. According to the analysis contents, total voltage harmonics occured in the 22.9kv y-connection is to be proved within harmonics international standard but current harmonics was approached to standard upper limits line. The harmonics incoming through the distribution line by harmonics of the near factory is measured at the measurement factory. In this paper, the countermeasure to decrease harmonics generation quantity is considered through the theoretical survey.

Goldman's Algorithm을 이용한 비외상성 흉통 환자의 분석

조석진,유진현,김찬웅,어은경,정구영 대한응급의학회 1999 대한응급의학회지 Vol.10 No.4

Back ground : It is important to evaluate the patient presenting with non-traumatic chest pain in emergency department, and it is also difficult to classify appropriately. The purpose of this study is to predict probability of acute myocardial infarction(AMI) and assess the group for low probability of AMI that is target for observation-unit of chest pain in emergency department. Methods : A prospective, clinical study was performed from March 1998 to August 1998 at the department of emergency medicine, Ewha Womans University Mokdong hospital. We classified high-probability group and low-probability group of AMI according to Goldman's algorithm and then compared with the final diagnosis. Results : The study included 218 patients. 84 patients(39%) was the high-probability group and 134 patients(61%) was the low-probability group of AMI. As compared with final diagnosis, AMI was 47 patients(56%) among the high-probability group and 1 patient(0.7%) among the low-probability group. We observed sensitivity of 98%, specificity of 78% in predicting AMI. Conclusion : The classification according to Goldman's algorithm may be useful predictor of AMI and improve triage for emergency department patients with chest pain. It is also helpful for management of observation-unit of chest pain in emergency department.

체육교사의 교수전문성 리더십 개발

유상석,정구인 韓國敎員大學校 敎育硏究院 2009 敎員敎育 Vol.25 No.4

교육개혁에 대한 일련의 논의들은 교육개혁의 중요한 요소로 교사의 리더십을 지적하고 있다. 전통적으로 교사리더십은 효율적인 교수-학습과정에 초점을 맞춰 이해된 경향이 있다. 그러나 학교체육의 위기를 경험하고 있는 체육교사들에게는 더욱 다양한 영역에서의 리더십 발휘가 요구되어진다. 체육교사의 교수전문성 리더십이 중요하며 다음과 같은 리더십의 개발이 필요하다. 첫 번째는 초임교사를 위한 멘터 (mentor) 역할을 위한 리더십이다. 많은 초임교사들이 현실과 이론의 차이로 인해 현실충격 (reality shock)을 경험한다. 동료교사가 체계적으로 초임교사를 지원하는 프로그램을 운영하기는 어럽지만 학교 상황을 잘 아는 선임교사들이 초임교사의 적응과 교수전문성의 개발을 지원하는 리더십 발휘가 필요하다. 두 번째는 예비교사들을 위한 교사교육자 역할을 위한 리더십이다. 교육실습에 참여하는 예비교사들은 학생신분에서 교사신분으로 전환되는 과정 겪는 어려움 극복을 도와주어 잘 준비된 교사로 성장할 수 있도록 지원하는 교사의 리더십은 매우 중요하다. 세 번째는 교사연구자 역할을 위한 리더십이다. 지식 소비자로 인식되었던 교사가 현장 개선을 위한 지식 생산 연구자 역할을 하는 리더십이 필요하다. 체육교사가 발휘해야 할 리더십의 영역 확대에 대한 이해와 함께 리더십을 적절하게 발휘할 수 있는 능력을 개발하기 위한 교사교육 프로그램의 변화에 대한 진지한 고려가 필요하겠다. The discussion about educational reform point out continuously that the critical component of educational reform is the teacher leadership. Traditionally, teacher's leadership was understood on the focus of effective implementation of teaching and learning process. However, more utilization of teacher's leadership are required to physical educators who face the crisis of school physical education. The leadership of physical educator's teaching expertise is critical to the reform of school physical education Physical educator have to exert more leadership to playas mentor for beginning teachers. large portion of beginning teachers have experienced the gap between theory and practice which Veenman coined term as reality shock. Physical educator also playa role of school based teacher educator for student teachers to help them to become well prepared teachers. The last is that physical educator should exhibit leadership as researcher. Physical educators are not just consumer of knowledge from university researcher, but are important producer of knowledge. The more understanding about leadership roles of physical educators also call for more consideration about revision of teacher education program.

조기유자망 어구의 개량 및 생력화 조업시스템 개발 : 3. 생력형 5단 양망기의 해상 성능 시험

김석종,구명성,강경범,서대범,정용진 제주대학교 해양과환경연구소 2005 해양과환경연구소 연구논문집 Vol.29 No.2

일부 지하철 근로자들의 교대근무형태에 따른 건강행위 실천정도와 건강증진 프로그램 요구도

최숙경,이강숙,이정운,구정완,박정일 大韓産業醫學會 2003 대한직업환경의학회지 Vol.15 No.1

목적: 지하철 근로자들의 교대 근무형태별 건강관련 특성과 건강행위 실천정도 및 건강증진 프로그램 요구도를 파악하여 직장내 건강증진 프로그램을 계획하는데 활용하고자 한다. 방법: 지하철 업무에 근무하는 남자 직원 789명중 통상근무자 191명, 3조2교대 역무직 187명, 3조2교대 차량직 204명, 8조5교대 승무직 207명을 대상으로 2002년 2월 8일부터 2월 22일까지 설문조사를 실시하였다. 결과: 통상근무가 교대근무보다 연령이 높았으며, 3조2교대 차량직에서는 경제적 수준이 낮다고 느끼는 비율이 다른 군에 비해 높았다. 총 교대근무년수는 8조5교대 승무직이 7년 2개월로 가장 높았다. 직장관련 특성은 근무형태에 따라 통상근무와 교대근무가 많은 차이를 보였으며, 특히 지하에서 근무하고 있는 3조2교대 역무직이 근무환경에 대한 만족도가 가장 낮게 나타났다. 비만정도와 고혈압 및 고콜레스테롤혈증은 통상근무자에서 높았으나, 8조5교대 승무직의 경우, 간장질환과 위장질환이 다른 군에 비해 높게 나타났다. 건강위험행위에서 흡연율과 1일 흡연량이 가장 높은 직종은 3조2교대 역무직이었고, 음주율은 전체적으로 80% 이상의 음주율을 보였으며, 거의 매일 술을 마신다고 응답한 비율은 3조2교대 역무직이 가장 높았다. 규칙적인 식이습관과 아침식사 여부는 3조2교대 역무직에서 82%가 불규칙적이며, 17.7%가 안 먹는다고 응답하였고, 운동횟수도 3조2교대 역무직에서 가장 낮았다. 건강증진행위 실천정도는 운동, 기호품 제한이 네 군 모두에서 선호도가 높았다. 근무형태별 대상자의 건강증진 프로그램 요구도와 참여의도가 가장 높은 프로그램은 운동프로그램이었으며, 스트레스관리, 암 예방 프로그램, 체중조절 프로그램, 금연 프로그램, 당뇨관리 프로그램, 고혈압관리 프로그램, 금주/절주 프로그램 순 이었다. 결론: 교대근무자들의 근무형태에 따라 건강행위의 특성이 달랐으며, 근무형태별 특성에 맞는 종합적이고 체계적인 건강증진 프로그램을 계획하여 접근해야 할 것을 제시하고 있다. Objectives: To determine the health behavior practices and needs for health promotion in shift work pattern in subway workers. Methods: Among 789 male subway workers divided into four groups, 191 day time workers, 187 station service men (3 groups, 2 turns), 204 rolling stock inspectors (3 groups, 2 turns) and 207 train operators (8 groups, 5 turns), we surveyed the health behavior and needs for health promotion by questionnaire. Results: For obesity, blood pressure and total cholesterol, day time workers had the highest levels, while train operators had higher diseases of the liver and stomach than others. The station service men had the highest smoking rate and daily smoking amount. More than 80% of the respondents consumed alcohol, and the drinking amount was highest among the day time workers and the 8/5 shift train operators. Eighty-two percent of the station service men had irregular eating habits and 17.7% did not have any breakfast. In health promotion activities, exercise and restriction of one's favorite(smoking or drinking) were most preferred in the four groups of respondents. The priority of needs and participation for health promotion was exercise programs, followed by stress management, cancer prevention program, weight control program, anti-smoking campaign, high blood pressure control program, and abstinence/moderation in drinking. Conclusion: As the health behavior practices differed relative to shift work patterns, it was suggested that a comprehensive health promotion program according to shift work pattern should be planned and implemented among subway workers.

미생물 초기부착과 생물막 성장에 미치는 기질의 C/N 비

박영식,이석렬,나영수,서정호,송승구 부산대학교 환경문제연구소 1997 環境硏究報 Vol.15 No.1

지역전통문화의 디지털 콘텐츠와에 관한 연구

이규식,박정민,김태곤,홍석구 慶北專門大學 2003 慶北專門大學 論文集 Vol.22 No.-

It investigates the website and a technique in order to make the culture property of the area with digital contents, it presented a method to make digital contents through investigation of Young-Ju area culture property. The results of this study ① It minimizes the loss of information ② Must come to be processed with the form which corresponds in objective of information delivery ③ for the result, It is necessary to grafting on new digitizing techniques.