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.-

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.

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.

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.

재요청을 고려한 버스중재프로토콜의 효율성 분석

박준석,이원주,전창호 漢陽大學校 工學技術硏究所 1997 工學技術論文集 Vol.6 No.1

Efficiency of bus arbitration scheme is modeled to analyze and compare five known arbitration protocols for single-bus multiprocessor system. The analytical model describes average access time as a measure of efficiency and takes resubmitted requests into account, amending contradiction of previous assumption that bus requests in each cycle are independent of those of previous cycles. The analytical results obtained from our model show that the efficiency of the equal priority protocol is as good as that of the rotating priority protocol.

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%).

중형컴퓨터시스템 개발의 시스템 공학적 접근

박진원,이준석 한국경영과학회 1995 經營 科學 Vol.12 No.3

Developing a midrange computer system in country like Korea is a difficult task. It is because of the lack of computer related technologies, appropriate manpower and the sufficient domestic market. Thus, only a few country except the United States has succeeded in developing her own model of computer systems. Fortunately, Korea became one of them. In this paper, we will present some special features of TICOM and how we successfully developed our own model of a midrange computer system with respect to systems engineering point of view. The Difficulties and suggestion from the experience of the development of TICOM will also be described.

선거 후보자간 TV 생방송 합동 토론 대화에서 사용되는 대화 전략에 대하여 : 이미지 관리 전략을 중심으로 Focusing on the Image Control Strategy

박석준 한말연구학회 2002 한말연구 Vol.- No.11

Generally speaking, the candidates on the live TV program, where the candidates get together to have a debate, use many kinds of conversational strategies and tactics. This paper aims to examine the most important conversational strategy, the image control strategies, in these kinds of environment. I will concretely analyze the tactics that are often used for image control strategies. A live-TV debate of candidates is very different not only from a casual conversation but also from general live TV policy debates, which consist of pros and cons on a specific subject. Thus, the participants of 'live TV debates of candidates' use different kinds of conversation strategies and tactics. In the case of a 'live TV debates of candidates', the most important strategy is 'the image control strategy'. All of the participants use many kinds of positive and negative tactics in order to build their positive self-image and to aggravate the image of the other party negatively. Largely, these tactics violate many principles and maxims of discourse observed in a casual conversation. This shows that the conversation itself has a strategic features. This study concretely analyzes and classifies image control strategies and the details of tactics by analyzing a real TV debates. In addition, we need to explain what kinds of details of tactics are more effective to achieve the goal of image control strategies here after.

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