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언양-밀양 간 국도24호선 석남고개 주변부 절토사면 지반특성
김승현,구호본,이종현,김승희,Kim. Seung-Hyun,Koo. Ho-Bon,Rhee. Jong-Hyun,Kim. Seung-Hee,Kim. Jin-Hwan,Son. Young-Jin 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1
울산광역시 울주군 상북면에서 경상남도 밀양시 산내면을 잇는 국도 24호선은 왕복 2차선으로 기존 도로의 선형이 매우 불량하고, 위험절토사면이 집중적으로 분포되어 있다. 2002년에는 관련기관과의 연계로 울주-밀양 간 국도 24호선의 도로절토사면에 대한 현황조사가 실시되었으며, 그 중 57개소 현장은 위험절토사면으로 분류하여 추가적인 상세 현장조사가 실시되었으며, 불연속면의 방향에 관한 다양한 정보들이 취득되었다. 2002년에는 관련기관과의 연계로 울주-밀양 간 국도 24호선의 도로절토사면에 대한 현황조사가 실시되었으며, 그 중 57개소 현장은 위험절토사면으로 분류하여 추가적인 상세 현장조사가 실시되었으며, 불연속면의 방향에 관한 다양한 정보들이 되었으며, 이에 대한 길이별, 경사별 분포현황, 불연속면 발달상태 등 여러제반 특성을 살펴 보았다. National Road No.24 connects Ulju-gun in Ulsan Metropolitan City and Milyang city in south Gyongsang Province. The width of the road is small and narrow and many of the dangerous cut slopes are distributed along the way. In 2002, the government officer carried on the brief exploration about road cut slopes, and KICT conduct a detailed additionally investigations 57 dangerous cut slope sites of them. We gained a variety of information of the each slope such as length, slope, discontinuites et al.
뇌 혈관의 아급성 색전증을 동반한 중증 난소과자극 증후군 1례
김승현,강경화,양윤석,황인택,박준숙,김정현,김진섭,Kim, Seung-Hyun,Kang, Kyoung-Hwa,Yang, Yun-Seok,Hwang, In-Taek,Park, Jun-Suk,Kim, Jeong-Hyun,Kim, Jin-Sub 대한생식의학회 2008 Clinical and Experimental Reproductive Medicine Vol.35 No.2
난소과자극 증후군 (Ovarian Hyperstimulation, OHSS)은 배란 유도의 가장 심각한 합병증 중의 하나로서 난소 비대, 복수, 흉수, 심막 삼출액, 혈액 농축, 전해질 이상 및 혈전증 등의 증상을 초래하는 것으로 알려져 있다. 특히 난소과자극 증후군 환자에서 혈전 색전증의 발생은 적절한 치료에도 불구하고 발생하고 예측이 어렵고 환자를 사망에 이르게 할 수도 있기에 가장 위험한 합병증 중의 하나로 인식되고 있다. 저자들은 체외수정 시술 후 중증 난소과자극 증후군 환자에서 본원 입원 치료 중 합병된 색전증에 대한 증례를 경험하였기에 보고하는 바이다. Ovarian hyperstimuation syndrome (OHSS) is the most serious complication of controlled ovarian stimulation. It causes symptoms such as, ovarian enlargement, ascites, pleural effusion, pericardial effusion, hemoconcentration, electrolyte imbalance, and thromboembolism. Although proper management is done, thromboembolism could occur and is difficult to predict. Moreover it can cause death. Consequently thromboembolism is the most dangerous complication of OHSS. We experienced a OHSS patient with thromboembolism of the brain after having IVF-ET.
정재민(Jae Min Jeong),박재영(Jae Young Park),이종진(Jong Jin Lee),김용운(Yong Woon Kim),김승현(Seung Hyun Kim) 大韓環境工學會 2013 대한환경공학회지 Vol.35 No.5
강변여과용 수평집수관을 모사하는 파일럿 규모의 모래통 실험을 수행하였으며, 다양한 출구유속에 대한 수평집수관에서의 수두분포를 구하였다. Kim24)이 수행한 실험실 규모의 수평집수관에서의 손실수두에 Kim25)이 개발한 이론 즉, 작은 규모의 수평집수관에서의 손실수두로부터 큰 집수관의 손실수두를 계산하는 방법을 적용하여 본 연구의 관측치와 비교함으로써 Kim25)의 이론이 타당함을 알 수 있었다. 또한, 이들의 이론을 적용하여 본 연구에서의 관측치로부터 실규모 집수관에서의 수두분포를 구하는 방안을 예를 들어 설명함으로써 강변여과의 수평집수관 설계방법을 제시하였다. A pilot-scale sand-box experiment simulating a lateral of collector well used in riverbank filtration was performed, and hydraulic head distributions along the lateral were measured according to the various drawdowns at the well. The results of this experiment were compared to the predicted values obtained using a theory previously developed by Kim25) in order for its validation. This theory predicts the head loss in a large-scale lateral given the loss in a small-scale one, and to have actual values for comparison, the results from a lab-scale experiment previously performed by Kim24) were employed. Comparing the experimental values to the extrapolated value indeed confirmed the validity of the theory. A procedure to determine the hydraulic head distribution of a practical-scale lateral was also presented applying the theory to the experimental result of this study in an effort to show the process of lateral design for riverbank filtration.
좌우 늑골하 부위 체표온도와 혈중 Aminotransferase 농도와의 관계
김승현,박명원,조정훈,장준복,이경섭,Kim, Seung-Hyun,Park, Myung-Won,Cho, Jung-Hoon,Jang, Jun-Bock,Lee, Kyung-Sub 대한한방체열의학회 2004 대한한방체열의학회지 Vol.3 No.1
This study examined the relationship between aminotransferase and DITI in the diagnosis of Liver Qi stagnation. An analysis was performed on the thermographic findings of 17 subjects with abnormally high aminotransferase value and 26 with no problem in blood sample at the Kangnam Korean Hospital, KyungHee University, Seoul, Korea, from March 2003 to May 2003. The body temperature was assessed by DITI thermographic measurements were performed on Rt. and Lt. subcostal area. Value of ${\delta}T$ and absolute value of ${\delta}T$ were tested by Mann-whitney U test. The absolute value of ${\delta}T$ was statistically significant(P<0.00). The ${\delta}T$ was also significant(P<0.01) and the temperature of Rt. area was higher than that of Lt. area. It is believed that DITI may be a favorable alternative to the diagnosis of Liver Qi stagnation.
김승현,김수형,Kim, Seung-Hyun,Kim, Soohyung 한국전자통신연구원 2019 전자통신동향분석 Vol.34 No.4
As companies use increasing amounts of data more and more, people are more concerned about protecting their privacy. Many researches studies have been conducted with a to securely view of manage managing and share sharing private information securely using the Bblockchain technology. These studies have suggested a Bblockchain-based approaches to provide efficiency, scalability, data ownership, and systematic data lifecycles that were are the limitations of lacking in traditional access controls. More Sspecifically, these studies have introduced a new access control models, distributed hash tables, trusted execution environments, and hierarchical ID-based cryptographic mechanisms to provide reliable access control even in complex environments such as IoT Internet of Things. In this paperstudy, we present the criteria to for classifying the functional characteristics of the Bblockchain-based access control methods and derive the differentiateion between of each the several methods.
정신분열증환자에서 Haloperidol 투여에 따른 임상효과와 혈장 Homovanillic Acid의 농도 및 혈장 5-Hydroxyindoleacetic Acid 농도와의 관계
김승현,이민수,곽동일,Kim, Seung Hyun,Lee, Min Soo,Kwak, Dong Il 대한생물정신의학회 1995 생물정신의학 Vol.2 No.1
The Purposes of this study were to examine plasma homovanillic acid(pHVA) levels and 5-hydroxyindoleacetic acid(pHIAA) levels in schizophrenics during haloperidol treatment, and to assess the association of pHVA and pHIM levels with their psychopathology and treatment responses. Fourteen patients entered the study and pHVA, pHIAA levels were measured at baseline, first week, second week and fourth week during treatment. Also, plasma haloperidol levels were measured at first week, second week and fourth week. Psychopathology was evaluated with Brief Psychiatric Rating Scale(BPRS) at baseline, 1st week, 2nd week and 4th week. 1) There were significant differences on the duration of illness and total BPRS scores at baseline between higher pHVA group(baseline pHVA level >7.72ng/mL) and lower pHVA group(baseline pHVA level <7.72ng/mL). 2) There was no significant difference on the duration of illness between higher pHIM group(baseline pHIAA level >3.18ng/mL). and lower pHIAA group(baseline pHIAA level <3.18ng/mL). 3) The Means of pHVA levels at 1 st week and 2nd week after treatment decreased significantly in the higher pHVA group and did not change in the lower pHVA group. 4) In the higher pHIAA group, the mean of pHIAA levels at 4th week after treatment decreased significantly, but did not change in the lower pHIAA group. 5) Between the higher pHIVA group and lower pHVA group, the response rates(percentile improvement) after treatment were not different from each other, but there was significant difference on the response rate between the lower pHIAA group and higher pHIM group at 2nd week. 6) There was significant correlation between total BPRS scores and pHVA levels in the higher pHVA group during treatment. The results suggest that repeated measurement of pHVA levels and pHIAA levels following antipsychotic treatment have prognostic significance for response. Also, shcizophrenics whose have relatively nigh levels of pHVA, or relatively low levels of pHIAA before treatment will show a favorable early responses to antipsychotics.
감정평가업에 있어서 서비스 요인과 고객만족의 관계에 대한 고찰
김승현,민규식,Kim, Seung-Hyun,Min, Gu-Sik 한국전자통신학회 2012 한국전자통신학회 논문지 Vol.7 No.3
The future of appraisal industry looks negative in the reality of change of the property market and over-competition of the field. Unless Constituent members of appraisal industry cope actively with the changing circumstances the profit structure of their company will get worse and they will finally fall behind in the competition. The best policy to survive from the changing circumstances in the limited appraisal market is to provide better service and improve its structure in order to have differential competitiveness. The purpose of this study is to describe the relation between the service factors of appraisal industry and customer satisfaction for providing more effective and high quality appraisal service. 감정평가업계도 근래 부동산 시장의 장기침체와 더불어 평가시장의 축소 및 그에 따른 과당경쟁이 심화되고 있다. 감정평가업에 있어 서비스 요인은 공정성, 객관성, 충실성, 공시업무 수행능력, 연구개발 기여도 등이 있으며 평가업계는 최상의 감정평가를 통하여 고객의 만족도를 높이고 이러한 노력은 고객의 평가를 통하여 감정평가 산업이 지속적으로 발전할 수 있게 할 것이다.
김승현,조숙행,Kim, Seung-Hyun,Joe, Sook-Haeng 한국정신신체의학회 1999 정신신체의학 Vol.7 No.2
인간은 에너지 섭취와 소모에 있어 변동이 심한 편이지만 비교적 일정한 체중을 유지하고 적절하게 섭식행동을 조절한다. 그러나 이러한 조절기전에 문제가 발생하면 비만이나 그 이외의 다른 섭식장애를 일으키게 되며 다양한 후유증을 야기한다. 본 논문에서는 최근에 소개되기 시작한 호르몬인 leptin이 섭식의 조절과 에너지의 항상성을 조절하는데 있어 어떻게 중요한 작용을 하게되는지 조사하여 주로 정신과 영역에서 관심을 기울일 만한 부분에 대해 고찰하고자 한다. Leptin이 처음 발견되었을 때 그 역할은 주로 음식의 섭취를 제한하고 에너지의 소모를 증가시키는 호르몬으로 소개되었지만, 점차 그 이외의 다른 신체 기능 즉, 생식주기나 신경대분기계에도 영향을 미치는 것으로 보고되면서 정선과 영역에서 차지하는 비중도 확대되고 있다. 그러나 leptin의 작용기전은 매우 복잡하며 많은 부분이 아직도 불분명한 상태에 있다. 이에 저자들은 중추신경계에서 현재까지 알려진 leptin의 작용기전에 대해 살펴보고 섭식과 관련된 그 밖의 다른 신경전달물질들과의 상호작용 그리고 섭식장애와의 관련성에 대해서 최근 문헌들을 조사하여 함께 고찰하고자 한다. Food intake and body weight are determined by a complex interaction of regulatory pathways. Leptin, the product of the ob gene, is a recently discovered hormone secreted by adipocytes, that signals the amount of adipose tissue energy stores to the brain and exerts major effects on energy homeostasis and neuroendocrine function. In addition, leptin has recently been shown to affect reproductive function in rodents and humans. The study of leptin and its effectors in the hypothalamus may provide important insights with respect to the interplay of several hypothalamic neuropeptides in regulating feeding as well as the interaction of genetics and environment in the regulation of energy homeostasis. In this review we summarise the action of leptin in the regulation of food intake and highlight a working model of the effects of environmental factors on the leptin system.
고에너지배관 파단위치에 따른 배관휩과 충격파의 영향 평가
김승현,장윤석,최청열,김원태,Kim, Seung Hyun,Chang, Yoon-Suk,Choi, Choengryul,Kim, Won Tae 한국압력기기공학회 2017 한국압력기기공학회 논문집 Vol.13 No.1
When a sudden rupture occurs in high energy lines, ejection of inner fluid with high temperature and pressure causes blast wave as well as thrust forces on the ruptured pipe itself. The present study is to examine pipe whip behaviors and blast wave phenomena under postulated pipe break conditions. In this context, typical numerical models were generated by taking a MSL (Main Steam Line) piping, a steam generator and containment building. Subsequently, numerical analyses were carried out by changing break locations; one is pipe whip analyses to assess displacements and stresses of the broken pipe due to the thrust force. The other is blast wave analyses to evaluate the broken pipe due to the blast wave by considering the pipe whip. As a result, the stress value of the steam generator increased by about 7~21% and von Mises stress of steam generator outlet nozzle exceeded the yield strength of the material. In the displacement results, rapid movement of pipe occurred at 0.1 sec due to the blast wave, and the maximum displacement increased by about 2~9%.
김승현,구호본,이종현,백용,Kim, Seung-Hyun,Koo, Ho-Bon,Rhee, Jong-Hyun,Baek, Yong 대한지질공학회 2007 지질공학 Vol.17 No.2
집중강우에 의해 주로 발생되는 절토사면 붕괴는 인적, 물적 피해를 초래한다. 한국건설기술연구원은 예방 수단으로서 위험사면을 집중관리하고 있다. 지속적인 사면관리에도 불구하고 지구환경의 변화로 절토사면의 붕괴발생 빈도는 점차적으로 증가하고 있다. 이에 대책공법 적용이 어려운 절토사면에 대하여 상시계측시스템을 설치하고 있다. 상시계측시스템의 운용은 대인 대물 피해에 대한 조치로서 활용될 수 있으나, 강우시 절토사면의 붕괴 징후를 인지하더라도 관리자가 현장관리 작업을 수행함에 있어서 시공간적 제약으로 인한 한계가 있다. 낙석신호등은 상시계측시스템을 통하여 사면 위험 징후가 발견될 시, 도로이용자에게 낙석발생에 대한 위험을 주지시키고, 붕괴시 도로관리자의 현장 도착 전까지 자동적으로 또는 수동적으로 도로를 차단시킴으로서 사면붕괴에 의한 피해를 예방하는 관리시스템의 일종이다. The failure of the road cut-slope due to heavy rains brings about lots of injuries and damage on national properties. KICT has developed CSMS system by means of prevention to manage the dangerous cut slopes. In spite of the continuous management the frequency of cut-slopes failure is increasing the past due to changes of earth-environment. KICT has installed the "Real-Time Monitoring System" on dangerous slopes. The operation of Real-Time Monitoring System is used as a positive system to reduce injuries and damages. However, Although the slope manager is aware of the signs collapsed in advance, it has temporal and spatial limits until the slope manager performs the works which are preventing the accidents. When real time monitoring system finds out an indication of slope collapse, the Rock-fall Signal Lamp System makes road-users indicated the risk of cut slopes. It is a kind of prevention system that it will minimize the damages of the properties as suspension of traffic automatically or passively.