피로를 유발하는 등속성 수축시와 회복기 혈중젖산 및 외측광근의 EMG Power Specturm 변화

정정진,조현철,김기진,윤성원,오수일,홍관이,손태열 龍仁大學校 體育科學硏究所 1991 體育科學硏究論叢 Vol.1 No.1

To examine the change of blood lactate concentration, EMG power spectrum, and Torque during fatiguing isokinetic contraction and recovery phrase, 6 sprinters performed maximal isokinetic knee extension at angular velocity of 3.14 rad.sec??(180°sec??) to 75% decreasing point (25%PT) using CybexⅡ system. In exercise phase, there was significant correlation between the decrement of peak EMG and median frequency and that of torque, and decrement of torque was greater than that of EMG . In recovery phase, EMG was restituded as normal value rapidly in a minute, but torque was restituded more slowly, and blood lactate concentration increased gradually from 50%PT to 3 minute after recovery. As a result of this study, it is suggested that muscle fatique due to decreasing of metabolic substrate and accumulation of metabolic products in peripheral site of muscle, and that inhibitory factors act neuromuscular junction in the end of exercise from rapid restitution of EMG in recovery phase.

단련자와 비단련자의 근의 전기적 효율

정전진,조현철,손태열 龍仁大學校 體育科學硏究所 1993 體育科學硏究論叢 Vol.3 No.1

This study was designed to compare the electrical efficiency of biceps brachii during 50% an 100% MVC test in the exercise player and non-exercise player. It was measured IEMG,MVC, 50%MVC, E/F ratio during Arm flexion. Significantly less E/F radio during 100%MVC and 50% MVC was appeared in exercise group compared with non-exercise group. This result suggested that exercise group during muscle force output had a good efficiency compared with non-exercise group, and that specificity of exercise related to muscle efficiency.

보조공학기기 이용실태 및 서비스 희망에 대한 심층면접

정민예,김정란,양노열,유인규,박혜연 대한보조공학기술학회 2009 대한보조공학기술학회지 Vol.1 No.1

목적 : 구직장애인, 장애인공무원과 지원을 많이 받아보지 않은 사업주를 대상으로 심층면접을 통해 보조공학기기 이용실태 및 서비스 희망을 조사하고, 이를 통하여 앞으로 보조공학서비스 서비스 방향을 제안하고자 조사하였다 연구방법 : 심층면접의 대상자는 장애인공무원, 구직장애인, 사업주로 분류하여 반구조화된 가이드라인 설문을 구성하였다. 면접 대상은 설문조사를 위한 모집단 중 무작위로 추출하여 면담 조사에 협조를 약속한 대상자 사업주 7명, 구직장애인 7명, 장애인공무원 5명을 대상으로 총 19명이 응답에 참여하였다. 결과 : 수집된 자료는 질적 분석 절차를 통해 보조공학기기의 사용경험, 보조공학기기 신청경험 또는 개인적 구입경험, 장애유형에 관련된 보조공학기기의 사용경험여부 및 인식조사, 보조공학서비스에 대한 인식정도 및 이용경험과 보조공학서비스 방향과 추가로 제공을 희망하는 서비스 내용 5가지의 주제가 도출되었다. 결론 : 보조공학서비스의 보다 효율적인 운영방식을 고려해야 할 것이며, 보조공학서비스를 할 때 구입이나 사후 관리도 보다 사용자 중심에서 서비스 제공이 필요할 것이다. Objective : The purpose of this study was to provide the information about the actual demand and use of assistive technology among people with disabilities who not received assistive technology service. Methods : In-depth interview subjects were government officials with disable, disabled job seekers, and employers hiring workers with disabilities. We made up the semi-structure guidelines question with group into three classes. We asked for an interview with subjects that choose samples at random. Results : These results show five themes related to use and application experience in assistive technology, the awareness of assistive technology service, and the demand to make of assistive technology service. Conclusion : In conclusion, we suggests that they want to be included assistive technology services target and replied use of those assistive devices will help them to get a job or to improve work efficiency and capacity.

학생증에 바코드 사용을 위한 연구

이중열 全北大學校 敎育大學院 1997 敎育論叢 Vol.17 No.-

This study is to understand the principle of bar code and is able to be printed by ordinary printers. And this program is developed by c language. Applying for the program, I print the bar code on the student's license and use not only the student's license but the circulation card for book as well. I design the student's license by inserting the bar code and develop the model of computerizing system in order to control it.

열형광 CaSO₄:Dy 소자의 최적 제조조건에 관한 연구

김장렬,남영미,장시영,김두영,양정선,박재우 제주대학교 산업기술연구소 2000 尖端技術硏究所論文集 Vol.11 No.1

An experimental investigation has been performed to determine optimal conditions for preparing the thermoluminescent CaSO4:Dy pellets which have been widely used as personal radiation dosimeter material. Our investigation has shown that an optimal weight concentration of the dopant Dy in the bulk CaSO4:Dy is 0.1 mol%, and an optimal temperature of adding Dy in the preparing process is 320 ℃. An optimal time and temperature for sintering the CaSO4:Dy crystal produced from the chemical process are found to be 2 hours and 800 ℃, respectively. The maximum thermoluminescent sensitivity was observed when the CaSO4:Dy crystal was pulverized to grain sizes of 63 - 200 ㎛ in diameter before being fabricated into pellets. The commercial Teflon was selected as an adhesive for the fabrication of the CaSO4:Dy pellets with an optimal mixing ratio of the Teflon and CaSO4:Dy being 70 to 30 in weight.

전북대학교 전자계산소 장기발전에 관한 연구

이중열,김동용 全北大學校 1988 論文集 Vol.30 No.-

전환기 행정개혁의 쟁점과 대안

김정렬 대구대학교 2008 행정문제 연구 논집 Vol.1 No.

Contemporary administrative reforms are in a time of transition. In this context, this study overviews and examines disputing issues of the reforms in terms of vision and objective, system and strategy, and instrument and method. In regard of the vision and objective of administration, the significance of competent government, frugal government, wise government, clean government, and polite government will be discussed with reform agendas derived from diverse ideological positions. Then, demands from internal and external environments as well as responding strategies and system transformation as counter moves of governments will be researched. Regarding the issue, the investigation includes the issues of change management and communication with environments. Moreover, it suggests tangible reform alternatives such as system restructure to harmonize of centralization and decentralization, strategy development for balancing conflicting interests, establishing participatory and regular reform agencies, and increasing governmental capabilities as preparation for the future. Lastly, instrument and methods of administrative reforms will be examined with ten specific issues.

교정용 미니스크류의 디자인에 따른 식립 및 제거 토오크

차정열,윤태민,황충주 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.1

교정용 미니스크류의 원추 형태가 식립 후 시기별 안정성에 미치는 영향을 알아보기 위해, 시기별 제거 토오크 및 동요도와 조직시편분석을 시행하였다. 성견 6마리의 하악 협측골에 원통형과 원추형 교정용 미니스크류(Biomaterials Korea, Seoul, Korea) 48개를 식립하고, 식립 시 식립 토오크와 동요도를 측정하고 3주, 12주 동안 교정력을 부여한 후, 제거 시 제거 토오크와 동요도를 측정하였다. 식립 토오크는 원통형 미니스크류에서 13.6 Ncm, 원추형 미니스크류에서 22.3 Ncm로 원추형 미니스크류에서 높은 식립 토오크가 측정되었다 (P < 0.001). 식립 3주째 제거 토오크는 원통형 미니스크류에서 5.7 Ncm, 원추형 미니스크류에서 9.1 Ncm로 유의한 차이가 관찰되었다(P < 0.05). 식립 12주째 원추형 미니스크류의 제거 토오크는 3.6 Ncm로 유의하게 감소하여(P < 0.05) 원통형 미니스크류의 4.2 Ncm와 유의한 차이를 보이지 않았다. 이상의 결과로 미니스크류의 원추 구조는 식립 토오크를 유의하게 증가시켜 식립 후 3주간 안정성에 도움이 되었으나, 12주 후 안정성에 있어서는 원통형 미니스크류와 유사하였음을 시사한다. Objective: This study was designed to analyze the primary and secondary stability characteristics of orthodontic mini-screws of tapered design when compared with the cylinder mini-screw. Methods: A total of 48 mini-screws were placed into the buccal alveolar bone of the mandible in 6 male beagle dogs. Comparison was made between tapered and cylinder type mini-screws (Biomaterials Korea, Seoul, Korea). Maximum insertion torque (MIT) was measured using a torque sensor (Mark-10, MGT50, USA) during installation, and maximum removal torque (MRT) was recorded after 3 and 12 weeks of loading. Results: Taper mini-screws showed a higher MIT value of 22.3 Ncm compared with cylinder mini-screw showing 13.6 Ncm (P < 0.001). The MRT of the taper mini-screw showed a significantly higher value of 9.1 Ncm than those of cylinder mini-screw of 5.7 Ncm at 3-weeks after installation (P < 0.05). However, there was no difference in the MRT value between the taper and cylinder mini-screws at 12 weeks of loading. Conclusions: These results showed that the high insertion torque of the taper mini-screw design increases initial stability until 3 weeks of loading, but does not have any effect on the secondary stability at 12 weeks of loading.

동적, 실시간 체열촬영술

박정율 대한체열학회 2003 대한체열진단학회지 Vol.3 No.1

열형광 CaSO₄ : Dy 소자의 최적 제조조건에 관한 연구

양정선,장시영,김장렬,김두영,남영미,박재우 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.1

An experimental investigation has been performed to determine optimal conditions for preparing the thermoluminescent CaSO_(4):Dy pellets which have been widely used as personal radiation dosimeter material. Our investigation has shown that an optimal weight concentration of the dopant Dy in the bulk CaS0_(4):Dy is 0.1 mol%. and an optimal temperature of adding Dy in the preparing process is 320℃. An optimal time and temperature for sintering the CaSO_(4):Dy crystal produced from the chemical process are found to be 2 hours and 800℃. respectively. The maximum thermoluminescent sensitivity was observed when the CaSO_(4):Dy crystal was pulverized to grain sizes of 63 - 200 m in diameter before being fabricated into pellets. The commercial Teflon was selected as an adhesive for the fabrication of the CaSO_(4):Dy pellets with an optimal mixing ratio of the Teflon and CaSO_(4):Dy being 70 to 30 in weight.