외부 프리스트레스 도입에 의한 노후된 콘크리트 거더교의 보강성능평가

박승범,홍석주,이봉춘,장석호,권혁준 충남대학교 산업기술연구소 2000 산업기술연구논문집 Vol.15 No.1

One of the promising methods to enhance the flexural strength of a externally prestressed girder is to place the tendons with large eccentricities. The analysis and design of composite girders prestressed by external tendons involve difficulties related mainly to the position of anchorages and the construction sequences. This study was conducted on the concrete bridges reinforced by the continuous girders and the external prestressing. The test results in this study showed that the external prestressing of a composite girder increased the range of the elastic behavior, reduced deflections, increased ultimate strength, and added to the redundancy by providing the multiple stress paths.

老舍《月牙兒》小考

朴準錫 中國語文硏究會 1989 中國語文論叢 Vol.2 No.-

광대역 무선 가입자망(LMCS) 시스템의 상향스트림 처리를 위한 AIU(ATM Interface Unit)의 상향스트림 전송부 구현

박영민,박준호,장주석 경운대학교 산업기술연구소 2000 産業技術硏究論文誌 Vol.3 No.1(A)

Local Multi-point Communication System (LMCS) is a broadband wireless telecommunications common carrier service in the 28 GHz range that will be capable of carrying basic and advanced communication services as "wireless" cable TV, Internet access, video teleconferencing, and various other multimedia. Signals from a central transmitting/receiving station will be sent to and received from homes and businesses within a four to five kilometer radius. Several such stations will be required in each city to service the total geographic area. Homes and businesses will send and receive the signals through equipment consisting of a small, unobtrusive antenna plus the associated electronics, which are about the size of a television converter. To use wireless technology is world-wide trend. In this paper, we implemented a system to generate and transmit up-stream frame in the LMCS system based on ATM cell. This control circuit is designed in VHDL and implemented using AT& T ORCA FPGA 2C08-208 pin chips. It actually serves perfect image through the internet with 8Mbps. This FPGA chip operates upto 30MHz input clock frequency.

광대역 속도 영역에서의 유도 전동기의 직접 토오크 제어 방식에 관한 연구

朴俊烈,姜珉碩 弘益大學校 科學技術硏究所 1995 科學技術硏究論文集 Vol.6 No.-

The sliding mode control concept which is insensitive to parameter variation and load disturbance is applied in the outer loop a speed drive system utilizing a squirrel-cage induction motor. The response of direct torque control is slower during start-up and step change. FLC(Fuzzy Logic Controller) is used for the implementation of DSC(Direct Self Control) to improve its slow response. The software realization of the proposed algorithms were implemented by TMS320C31 DSP and the effectiveness of controllers is demonstrated though experimental work.

사회환경교육의 교육과정 표준화 모형 및 통합프로그램 개발연구

박석순,최돈형,성효현,허명,강명희,이숙임,남상준 이화여자대학교 환경문제연구소 1998 이화환경연구 Vol.2 No.-

This paper presents the development of standardized modules and an integrated program which will be used for social environmental education. The study objectives are to develop modules which are based on various environmental topics, to relate the regional environmental topics to the educational modules and program, and to include the demand of students in the modules and program. Literature and questionary surveys, as well as, module development method were utilized as research tools. The titles of developed modules are "The Green Plant Earth," "Unexpected Resources: Save Resources and Recycle", "Water as the Mother of All Lives", "The Blue Sky with Clean Air", and "Soil as the Home of All Living and Non-living Things". It is hoped that the developed modules and program are utilized as course materials and curriculum for social environmental education in various educational institutes. The study results will be materialized as multimedia in near futher.

진단적 복강 세척법

박상문,박준석,류명곤,김갑득,송화식,김종완 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.4

Diagnostic peritoneal lavage is a accurate and safe method confirming the intraabdominal injury with head trauma, unstable multiple injuried patients. But the development of imaging technique and the trend in noninvasive diagnostic value is decreasing now. In the emergency room, the emergency physicians are required the rapidity and accuracy in intial assessment and the decisions for the operation or not. So emergency physicians have been investigating the diagnostic method for intraabdomial injury that is more rapid, safe and accurate. Many diagnostic tools are developed and now accepted and used widely, among them the diagnostic peritoneal lavage is still the best method for unsatble or head injuried patients. But the positive diagnostic criterias are variable by many authors and still remain imperfectly. So our study was reviewed by medical record of patients who were undertaken the diagnostic peritoneal lavage for the diagnosis intraabdominal injury and statistical analysis was done compared with many criteria of red blood cell and white blood cell for the more accurate way. A retrospective study of diagnostic peritoneal lavage was done of 90 patients with blunt abdominal trauma during 2 years from January, 1996 to December, 1997 and summerized our experience. The results were as follows; 1) There are 73 males and 17 females in sex. The most common type of injury was the traffic accident. 2) With many variable criteria of RBC and WBC, the accuracy and the false positive and false negative were not different in statistical results. The average accurracy was 80.1%. 3) The operations were done in 30(33.3%) cases, and the most frequent injuried organ was the small bowel, 20 cases(66.7%).

줄기세포 연구의 심의·감독 : SCRO와 ESCRO를 중심으로

박준석 이화여자대학교 생명의료법연구소 2007 생명윤리정책연구 Vol.1 No.1

Human embryonic stem cell research does not always fall within research involving human subjects, but has features that make it different from other researches involving human derived materials, for it has closely connected with embryo research, which can lead to the reproductive cloning, destruction of human embryos and forms of researches that generate chimeric animals. Therefore, it is of great importance to make the stem cell research overseen by another mechanism, which focuses exclusively on the stem cell research besides IRB. This paper examines two major guidelines for stem cell research published in recent years: the U.S. National Academy of Sciences (NAS) Guidelines for Human Embryonic Stem Cell Research (2007 Edition) and the International Society for Stem Cell Research (ISSCR) Guidelines for the Conduct of Human Embryonic Stem Cell Research (2006). These two guidelines have provisions to the effect that additional oversight system is to be established. Stem cell research should be conducted without threatening social safety. And the additional oversight system provided by these guidelines can be a better way to this elusive end.

순천향대학교 천안병원에 입원한 로타바이러스 감염 위장관염 환자의 임상양상

최석주,전세윤,김승수,박경배,김용배,박준수 순천향의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

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스트레스와 건강행위 실천과의 연관성

박은영,박형철,박경수,손석준 大韓家庭醫學會 2000 Korean Journal of Family Medicine Vol.21 No.11

사람의 비후성 반흔에서 면역조직화학기법에 의한 형질전환인자 알파와 표피성장인자 발현의 차이에 관한 면역조직화학적 연구

박영란,김현곤,김종중,문정석,송준섭,설경수,정윤영 朝鮮大學校 附設 醫學硏究所 2008 The Medical Journal of Chosun University Vol.33 No.2

Background and Objectives: Transforming growth factor-α (TGF-α) and epidermal growth factor (EGF) are polypeptides which interact with the epidermal growth factor receptor (EGFR) to produce their biological effects. The aim of the present investigation was to elucidate the immunolocalization of TGF-α and EGF in normal human skin, hypertrophic scar with skin graft on soft tissue defect, and postburn hypertrophic scar without graft. Methods: The data presented in this paper focused attention on differences of expression between two kinds of hypertrophic scars in relation to skin graft using immunohistochemistry. Formalin-fixed and paraffin-embedded tissues from 3 normal skin tissues, 3 hypertrophic scars after skin graft and 8 postburn hypertrophic scars without graft were immunolabelled with antibodies directed against TGF-α and EGF. Results: In normal epidermis of skin, strong TGF-α immunoreactivity (IR) was observed in all epidermal layers except the stratum (S.) basale, whereas EGF was immunopositive in a few cells over all epidermal layers. The staining for TGF-α was found in cell membrane, and EGF was seen either diffuse cytoplasmic or peripheral part of cells in normal epidermis. In hypertrophic scar after six months postoperation, TGF-α IR was observed in the upper part of S. spinosum and S. corneum, whereas EGF was diffusely expressed in the S. spinosum, also its intensity was slightly increased compared to normal skin. In hypertrophic scar without skin graft, very strong expression of EGF was detected in the S. spinosum and S. corneum, and intensity of EGF was increased when compared to normal skin and postoperative hypertrophic scar. EGF and TGF-α coexisted in the cells of S. spinosum in normal skin as well as hypertrophic scars. Double-labeled cells were increased in postburn hypertrophic scar compared to normal skin and postoperative hypertrophic scar. In addition, intensity of EGF and TGF-α double IR was the strongest in postburn hypertrophic scar. Conclusion: These results indicate that EGF may have a more complex regulatory role not only in the early stages of wound healing but also in hypertrophic scar.