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공무원의 여가활동참여에 따른 생활만족도 연구 : 대전광역시를 중심으로
옥해안,강병길 牧園大學校 1999 論文集 - 牧園大學校 Vol.36 No.-
The purpose of this study was (1) to describe leisure activity and life satisfaction Among Public Officers in Taejon City, (2) to investigate the relationship between sports participation, demographic characteristics and life satisfaction among Public Officers, living in Tae-Jon City. Two hundred thirty subjects(male 141, female 201) were selected using the systematic stratified cluster random sampling among the participants working in the Tae-Jon City. The instrument, which evidenced acceptable internal consistency (.62-.84) and test-retest reliability (.60-.83), was formulated by adapting existing instruments and developing new items. The data were collected from a self-administrated questionnaires, and was analysed through Mean, Frequencies, ANOVA, and Multiple regression. The finding of this study are as follows: First, there were relationships between leisure activity and life satisfactions. Gender, income, working field, and degree of health were the variables most significantly associated with life satisfaction. Second, sex-related attitudes were associated with sexual accountability, discussions about sex-related topics. Friends and magazine were seen as the most acceptable and easily obtainable sources of sex-related information, while doctors were seen as the most reliable source of sex-related information.
감귤산업의 시장세분화(Market Segmentation) 분석
허정옥,이동철,김병숙 동의대학교 경제경영전략연구소 2004 經濟經營硏究 Vol.2 No.2
This study is analyzed on the segmentation of orange industry at the marketing viewpoints. But there were limits of restricted respondents at the Seoguipo Agricultural Coop and Seoul, Daegu, Busan Agricultural Coop, and thus this results were difficult to be generalized. The authors hoped that researches on the JejuDo's oranges might be executed long-term and systematically based on the limits and problems of this study.
김봉옥,모정욱,정혜심,김병식 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.1
To evaluate the therapeutic effect of FES (Functional Electrical Stimulation) on hemiplegic gait, quantitative gait analysis was performed with computerized three dimensional motion analysis system (ELITE, B. T.S., Milan, Italy) with and without FES. The patient was 26 year old male with right hemiplegia as a result of severe traumatic cerebral contusion in left fronto-temporo-parietal area 7 years ago. The FES unit was consisted of one foot switch, one channel stimulator and one pair of surface electrodes. Active electrode was placed over deep peroneal nerve, 1 cm distally from the right fibular head to selectively stimulate the deep peroneal nerve, and reference electrode was placed 10cm distal from right fibular head between the Tibialis anterior and Peroneus longus. The characteristics of electical stimulation in this study included output current intensity : 1-50 mA, pulse width : 0.15 cosec, stimulation duration : 0-5 sec which was automatically adjusted on gait velocity, frequency : 25 Hz, and on-off triggered by foot switch. After FES for 1 hour per session, 3 sessions a week for 3 months, three dimensional gait analysis was performed with and without stimulation and data were analyzed. The result of three dimensional motion analysis showed that the ankle was dorsiflexed during swing phase and also corrected pathologic motion of other lower extremity joints with one channel FES stimulation on deep peroneal nerve compared to the gait without FES. And one channel FES with surface electrode was easy to handle and did not show significant complications or discomfort to the patient.
최연옥,정병호,조금배 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1
In this paper, a direct torque control(DTC) method of an induction motor is proposed which enables constant switching frequency. The switching strategy of a conventional direct torque control scheme which is based on hysteresis comparator results in a variable switching frequency which depends on the speed, flux, stator voltage and hysteresis band of the comparator. This paper proposes a new switching strategy which determine the effective switching time on each switching period by comparing the ascending and descending torque slopes. The simulation results are presented to verify this proposed scheme.
신병철,송희옥 충북대학교 컴퓨터정보통신 연구소 2006 컴퓨터정보통신연구 Vol.14 No.2
본 논문에서는 무선을 포함한 패킷 전송에서의 효율성을 위해 차세대 전송 계층 프로토콜인 SCTP에 ROHC(RObust Header Compression)를 적용한 ROHC 프로파일 7(ROHC-SCTP)방식을 제안한다. 제안된 ROHC-SCTP는 SNR(Sequence Number ROHC)-SCTP의 1 또는 2 바이트 길이의 새로운 필드를 SCTP 패킷 헤더에 추가하여, SCTP 멀티 스트림을 acknowledgement 스트림과 data 스트림으로 나누어 헤더 압축을 하며, 동기화 손실이 발생한 경우 context를 복구하는데 사용될 수 있도록 설계되었다. ROHC-SCTP의 제안을 통해 SCTP 헤더의 오버헤드 율을 최대 25% 까지 감소할 수 있으며 대역폭 또한 최대 5% 정도 절약할 수 있다. In this paper, we propose a new profile, ROHC(RObust Header Compression) profile 7, for SCTP with ROHC for applying robust header compression SCTP, which is a transport layer protocol. The proposed new profile 7 adds a new field of 1 or 2 byte size on the existing SCTP packet header, which can make the SCTP stream to be divided into acknowledgement stream and data stream. In addition, the classification of the stream can be used for recovering fault context. Consequently, in case that the proposed ROHC-SCTP is used, it is possible to reduce the SCTP header overhead rate and the bandwidth can also be saved.
김병철,김진흥,하옥남 조선대학교 동력자원연구소 1987 動力資源硏究所誌 Vol.9 No.2
The insolation and meteorological data which were measured in the meteorological observatory in several locations were examined and analysed. Also mean air temperature, wind speed and amount of cloud were examined. Monthly average insolation, clear sky solar radiation, diffuse, direct, global solar radiation and the ratio of the horizontal solar radiation and extraterrestrial solar radiation were observed and analysed to be a useful data in using the solar energy.
전옥철,김윤준,류범영,최재곤,조병욱,홍진후 조선대학교 생산기술연구소 1999 生産技術硏究 Vol.21 No.1
A series of wholly aromatic polyesters with side chains were synthesized by solution polycondensation from 2,5-dialkoxyterephthaloyl chlorides with the corresponding diol. The polymers showed the schlieren textures which is indicative of a nematic phase above their melting temperature. The inherent viscosities (η_(inh)) measured at 35℃ in phenol/p-chlorophenol/1,1,2,2-tetrachloroethane were 0.56-0.98 dℓ/g. The glass transition temperature (T_(g)) and melting temperature (T_(m)) decreased with increasing the length of the alkoxy side chain. Initial decomposition temperatures in TGA occurred at 338 ~ 363℃ in N₂ gas and thermal stability of polymers decreased with increasing the length of the side chain.