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손종영(Son, Jong-Yeong),이수호(Lee, Soo-Ho),전규엽(Jeon, Gyu-Yeob),홍원화(Hong, Won-Hwa) 대한건축학회 2013 대한건축학회논문집 Vol.29 No.7
In the case of Daegu subway arson in 2003, it was found out that the evacuation system could not play its own role in the dense smoke and blackout during the fire. Due to the dense cloud of smoke and blackout, the people could not easily find the way out. Proper emergency light plan considered cognitive characteristics of evacuees is set up in such places, if so it will be a great help for evacuation. The information obtained through visual sense induces behaviors intuitively. So, effective evacuee guidance is implemented by installing various evacuation guidance devices (emergency lights and luminous egress guide-lines). In connection with this topic, Jeon Gyu-yeob(2011) carried out an on-the-spot experiment focused on changes in visual perceptional evacuation environment and evacuation abilities. And on the basis of the results, he carried out a study on changes in evacuation behaviors through visual perceptional restriction. However, studies on characteristics of visual perception that has an effect on behaviors of evacuees and evacuation behaviors are not sufficient. Therefore this study examined the effect of background luminance of the emergency light induced to recognize the emergency light. Therefore, to produce a device for adjusting the brightness experiment, this study simulated evacuation experiments were performed for 136 people. The value of the result indicated by seek time of emergency light, evacuation time and emergency light cognition distance.
Jeon, Gyu-Yeob,Hong, Won-Hwa Elsevier 2009 Journal of loss prevention in the process industri Vol.22 No.6
<P><B>Abstract</B></P><P>The use of the phosphorescent guidance sign is increasing. To evaluate the changes of human behavior when a phosphorescent guidance sign was installed on the floor, the evacuation experiment was carried out. The main evacuation experiment was conducted in impaired visibility conditions at the subway station with 103 subjects. Characteristic features of changes regarding evacuation time, moving speed and evacuation route were mainly discussed in this paper. In addition, the changes of evacuation were evaluated by using the estimated velocity and relative order index. This study also introduced the method to simulate impaired visibility caused by smoke when an evacuation experiment was carried out. The results showed that the phosphorescent guidance sign facilitated evacuation due to a decrease in the evacuation route. The moving speed increased only when the phosphorescent sign was installed at intervals smaller than a person's step.</P>
대구 지역 지하철 역사의 이용자 수 특성과 이에 따른 피난 특성 분석에 관한 연구
전규엽(Jeon Gyu-Yeob),배양임(Bae Yang-Yim),홍원화(Hong Won-Hwa) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
In this study, Daegu underground subway stations are divided into four spheres according to geographical characteristics. The monthly number of users in each sphere is analyzed and also the number of users of each subway station is analyzed according to a time period. Evacuation simulations are carried out after setting up the number of users based on the result of analysis. The evacuation behavior and time in the same underground space are analyzed by varing the number of users. Therefore the result of this study is to propose guidelines for improving the evacuation safety performance in under ground subway stations.
가상현실 피난시뮬레이션을 통한 지하공간의 피난예측에 관한 연구
전규엽(Jeon Gyu-Yeob),나욱정(Na Wook-Jeong),홍원화(Hong Won-Hwa) 한국건축친환경설비학회 2007 한국건축친환경설비학회 논문집 Vol.1 No.1
Underground reaches higher risk level than other used building on fire potentially. In addition, it is difficult to previously predict egress paths due to various unexpected evacuation behaviors when being danger causing life loss in way of evacuation. Underground definite egress direction going to the ground. In this reason, this study researches the possible prediction range and level in an emergency by utilizing simulation methods in underground, and analyzes the practicality of education on the evacuation danger for the future. A virtual reality simulation presented by 3-dimension graphic conducts virtual fire evacuation tests so that behavior and times of participants of Full-Scale-Test compare with real evacuation environment. Accordingly general behaviors are able to be presented through an evacuation activity program which is predictable on fire, the underground living spaces are also considered designing and planning effectively. It is expected that evaluation systems about fire egress danger and interpretation of the safety on fire evacuation are available through this study.
전규엽(Gyu-Yeob Jeon) 인문사회과학기술융합학회 2018 예술인문사회융합멀티미디어논문지 Vol.8 No.7
우리나라 전체 시설재배 면적은 2016년 현재 54,218ha이며, 재배온실의 유형은 대부분 비닐하우스이다. 시설재배에서는 비닐하우스 내부 공기의 적절한 환기는 농작물의 생산성과 큰 영향을 미친다. 본 연구에서는 기존 농가에서 설치되고 있는 일반 비닐온실하우스와 삼각고환기창 비닐온실하우스의 환기 및 하절기 온도조절 성능을 비교하였다. 비닐하우스의 형태에 따라 달라지는 환기조건이 비닐하우스 내부 온도변화에 어떻게 영향을 주는지 시뮬레이션을 통하여 분석하였다. 특히 환기방식 개선을 통한 하절기 비닐하우스 내부 온열환경 개선의 효과를 정량적으로 분석하고자 하였다. 비닐하우스의 형태에 따라 달라지는 환기조건을 3가지의 형태로 구분하고, 3가지의 환기방식에 따라 비닐하우스 내부 온도변화에 어떻게 영향을 주는지 시뮬레이션을 통하여 분석하였다. 그 결과는 다음과 같이 정리 할 수 있다. 비닐하우스 측면 및 상부의 개구부가 모두 개방될 경우 일반 비닐하우스와 삼각고환기창 하우스의 실내온도 변화는 통계적으로 차이가 나지 않았다. The total area of facility cultivation in Korea is 54,218ha as of 2016, and most types of these are greenhouses. Proper ventilation inside has a great influence on the productivity of crops. In this study, we compared the ventilation and summer temperature control performances of the conventional vinyl greenhouses and the triangular high - rise vinyl greenhouses. We analyzed the effect of ventilation conditions on the internal temperature of the plastic house by simulation. In particular, we tried to analyze quantitatively the effect of improvement of the thermal environment inside the vinyl house during the summer by improving the ventilation system. We analyzed the ventilation conditions depending on the type of vinyl house in three types and analyzed the effect of the three ventilation methods on the temperature change of the vinyl house by simulation. The results can be summarized as follows. When both the sides of the vinyl house and the openings of the upper part were opened, the temperature change of the general vinyl house and the triangular high-ventilated greenhouse was not statistically different.
구강암 환자의 경부 림프절 전이 및 림프절 피막 외 침범과 관련된 임상병리적 인자에 대한 고찰
한장규(Jang Gyu Han),김승일(Seung-il Kim),박범희(Bumhee Park),장전엽(Jeon Yeob Jang),신유섭(Yoo Seob Shin),김철호(Chul-Ho Kim) 대한두경부종양학회 2021 대한두경부 종양학회지 Vol.37 No.2
Background/Objectives: Extra-nodal extension (ENE) is one of the strongest prognosticators in oral cancers. Here we tried to evaluate clinicopathological factors associated with the presence of ENE. Materials & Methods: We retrospectively analyzed clinical information of 120 patients who diagnosed with oral cancer and received curative surgery at our hospital from Mar 2012 to Apr 2020. We comparatively analyzed clinicopathological factors associated with the presence of lymph node (LN) metastasis and ENE, respectively. Results: Variable factors of primary tumor characteristics such as lymphovascular invasion, perineural invasion, largest diameter of tumor, depth of invasion and maximum standardized uptake value were significantly associated with the presence of cervical LN metastasis. The largest diameter of tumor was statistically significant also in multivariate analysis for predicting the LN metastasis. Meanwhile, the association between primary tumor characteristics and the presence of ENE were not statistically significant except the primary tumor size. Importantly, factors associated with LN characteristics including the maximum diameter and number of metastatic LNs were significantly associated with ENE. Conclusion: In this study, several factors affecting cervical LN metastasis and ENE in oral cancer patients were identified. The ENE seems to be influenced by the status of the metastatic LNs, such as the number of metastatic LNs, rather than the characteristics of the primary tumor itself.