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사상자 통계자료를 활용한 건축물 화재 위험성 분석에 관한 연구
진승현 ( Jin¸ Seung-hyeon ),김혜원 ( Kim¸ Hye-won ),구인혁 ( Koo¸ In-hyuk ),권영진 ( Kwon¸ Young-jin ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.2
The purpose of evaluating the fire risk of a building is to predict damage or loss of life and property in unspecified circumstances and to minimize expected damage. The fire risk assessment for buildings in Korea analyzes fire risk according to performance-oriented design under the Enforcement Decree of the Fire Facilities Act and the Fire Causing Index under the Enforcement Decree of the Multi-Use Business Act. Fire risk analysis is mainly conducted by using fire statistics or analyzing the results of safety inspections of buildings. In the case of fire statistics, it is necessary to analyze the fire risk in consideration of the degree of fire damage in each number of fires, as all fires received by the fire department are collected. In addition, it is necessary to devise fire safety measures for buildings by predicting the number of casualties that may occur due to fires in each building. Accordingly, this study aims to analyze the characteristics of casualties by building use using the number of fires judged to have grown.
Seunghyeon Cho,Won-Ju Park,Wonyang Kang,Hyeong-Min Lim,Ji-Sung Ahn,Dae-Young Lim,Jai-Dong Moon 대한직업환경의학회 2019 대한직업환경의학회지 Vol.31 No.-
Background: Dehydroepiandrosterone sulfate (DHEAS) is an endogenous steroid hormone produced by the adrenal gland. DHEAS has been suggested to play a protective role against psychosocial stress. The aim of this study was to investigate the association between job-related stress and blood concentrations of DHEAS according to occupational stress factors among female nurses. Methods: A cross-sectional study was conducted among 118 premenopausal nurses from 4 departments (operating room, emergency room [ER], intensive care unit, and ward) of a university hospital. Participants were all rotating night shift workers who have worked for over a year and mean age of 33.5 ± 4.8 years. Data from structured questionnaires including the Korean Occupational Stress Score, Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), and Pittsburgh Sleep Quality Index (PSQI) were used. Results: In the high job-related stressor group, scores of BDI, BAI, and PSQI were significantly higher than low-stressor group. ER nurses had relatively more work-burden related stressors, but they had significantly lower levels of anxiety and depression than other groups. And, ER nurses showed higher levels of DHEAS than the other department nurses. The differences were significant (p = 0.003). Additionally, there was a statistically significant difference even after adjusting for factors that could affect level of DHEAS, such as age, body mass index, drinking, and physical activity (p = 0.039). Conclusions: This result suggests the possibility that DHEAS may play a role as a marker of proper stress management. The capacity to secrete DHEAS is not simply due to workload or job stressor but could be determined depending on how individuals and groups deal with and resolve stress. Proper resolution of stress may affect positive hormone secretion.
EFFECTS OF SOCIAL MEDIA POSTING ON EXPERIENTIAL ASPECTS OF MATERIAL PRODUCTS AND LIKING OF THEM
Seunghyeon Cho,Jeonghwa Seo,Hakkyun Kim,Sangdo Oh 글로벌지식마케팅경영학회 2023 Global Marketing Conference Vol.2023 No.07
Studies regarding the relationship between purchases and happiness have consistently found an experiential advantage: people are happier when purchasing experiential products (e.g., vacations and concerts) than material products (e.g., clothes and electronics) (Caprariello & Reis, 2013; Carter & Gilovich, 2010, 2012; Pchelin & Howell, 2014; van Boven and Gilovich, 2003). This phenomenon (i.e., experiential advantage) may make marketing efforts of service firms or any companies selling experiences relatively more effective and productive in that consumers will derive a great amount of purchase happiness. On the other hand, the same phenomenon may indicate innate challenges and hurdles for firms selling products carrying materialistic features. Considering the material-experiential spectrum, approximately 50% of the industries are seeming faced with this issue. In this research, we propose a solution with which mainly material-focused products can loom more experiential, thereby benefiting from the experiential advantage. In other words, we investigate how material goods can be perceived as experiential and they can offer greater purchase satisfaction compared to when they remain as merely materialistic. Specifically, noting that reasons for experiential advantages are originated from social aspects of experiential goods (e.g., self-presentation to other people, conversational values, reputation-building, etc.), the current study shows that posting on social media can imbue social aspects, which is a key drive of the experiential advantage.
Current Research on Conducting Polymer-Carbon Nanocomposites for Bioengineering Applications
( Seunghyeon Lee ),( Sang Kyu Lee ),( Daseul Jang ),( Bong Sup Shim ) 한국고무학회 2017 엘라스토머 및 콤포지트 Vol.52 No.1
Conducting polymers and carbon nanomaterials offer a wide range of applications because of their unique soft conducting properties. Specifically, these conducting polymer-carbon nanocomposites have recently been utilized in bioengineering applications, partly because of their improved biocompatibility compared to conventional conducting materials such as metals and ceramics. Based on the assumption that these composites offer an important application potential as functional materials for biomedical devices or even as biomaterials, this review surveys the recent research trends on conducting polymers-carbon nanocomposites, focusing on bioengineering applications such as polyaniline (PANI), poly(3,4-ethylenedioxythiophene) or PEDOT, polypyrrole (Ppy), and carbon nanotubes and graphene.