• 한국주거학회:학술대회논문집
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• 한국주거학회 2005년도 추계학술대회 논문집
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• pp.295-300
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• 2005

This Study intends to find out the subjective symptom of Construction Business Worker caused by chemical material exposure, also willing to research how much they are exposed to VOCs(Volatile Organic Compounds) and under how much harmful circumstance they are working. As the results, the job group among construction business workers which is most highly dangerous degree to be taken ill of Multiple Chemical Sensitivity is Interior Worker, next following by order of Clerical Worker, Exterior Worker. According to this result, the continuous exposure in high density must be prevented by the measures for Interior Worker also to be bestowed a compulsory break during working hour for regular exposure to the open air,

• 한국수자원학회논문집
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• 제53권spc1호
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• pp.773-784
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• 2020

본 연구에서는 수자원시설물의 노후화 정도와 관리현황 등을 조사·분석함으로써, 수자원시설물의 유지관리 체계 선진화를 위한 입법 및 정책과제를 제시하였다. 수자원시설물의 노후화를 분석하기 위해 한국시설안전공단에서 운영하는 시설물통합정보관리시스템의 자료를 수집하여 분석에 활용하였다. 시설물별, 종별, 시도별, 등급별로 구축된 안전등급 자료를 이용하여 위험시설물 비율과 고령화율을 산정하여 수자원시설물의 현황을 분석하고 수자원시설 관련 지침 및 매뉴얼을 조사하였다. 이를 통해 1) 수자원시설물 범위의 재조정 및 지침·매뉴얼의 보완, 2) 재해여건 변화를 고려한 유지관리 체계의 구축, 3) 시설물통합정보시스템의 개선 및 표준연계서비스 활성화, 4) 시설물의 자산관리체계 구축의 네 가지 입법 및 정책과제를 제시하였다.

• 치위생과학회지
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• 제7권4호
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• pp.257-262
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• 2007

이 연구는 치과 진료실에서 치과의료종사자들의 감염방지에 대한 인식 정도를 파악하고자 설문지를 이용하여 대구지역의 치과병 의원에 근무하는 치과의사 50명, 치과위생사 176명, 간호조무사 100명을 대상으로 조사 분석한 결과는 다음과 같다. 1. 모든 직종에서 치과진료실에서 감염 위험성이 가장 높은 질환은 B형 간염으로 인식하고 있었다. 2. 개인용 보호 장비 사용에 대한 인식은 글러브, 러버댐 장착 필요성에 대해서는 높았으나 에이프런 착용에 대해서는 상대적으로 낮은 인식률을 보였다. 3. 기구 및 기재의 멸균에 대한 인식은 간호조무사에 비해 치과의사와 치과위생사가 상대적으로 높았다. 4. 장비의 표면 소독에 대한 인식은 치과위생사가 치과의사나 간호조무사에 비해 높았다.

• 한국병원경영학회지
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• 제21권3호
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• pp.11-21
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• 2016

The purpose of this study is to investigate the degree of difficulty and turnover of nurses working in the field and to derive clinical work activation and supply policy improvements. Data was collected from December, 2014 to January, 2015, from 23 hospitals, and participants were 3,887 nurses working in the field, Survey details : the difficulty of the clinical work of nurses working in hospitals, turnover intentions status and policy proposals for clinical research work enabled General characteristics, difficulties in clinical working, turnover intention and clinical work plan activation are frequency analysis. The difference between each of the variables in accordance with the general characteristics are one-way ANOVA analysis, Correlation analysis of the variables is also a Pearson correlation coefficients. 'difficulties in clinical working' was a statistically significant difference depending on the type of hospital, nursing class, number of beds, location, age, position, employment, gender, working form, working department, salary, career, and degree level. 'turnover intention' was a statistically significant difference depending on nursing rate, number of beds, region, age, position, sex, shifts, departments, annual income, and career. 'policy recommendation' was a statistically significant difference depending on type of hospital, nursing rate, age, position, employ, shifts, departments, annual income, degree level and career 'difficulties in clinical working' is 'turnover intention' (p<.001), 'policy recommendations' (p<.001) and had a significant positive correlation. and 'turnover intention' had a "policy recommendation" significant positive correlation with the relationship (p<.001) The most difficulties point of the nurses working in the field are the environment, such as shift, urgent and dangerous. Major policy proposals are improve treatment such as wages, and welfare.

• 지질공학
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• 제23권3호
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• pp.257-269
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• 2013

산사태나 비탈면 재해를 예방하기 위해서는 적절한 계획을 수립하여야 하며, 국가의 한정된 예산을 고려했을 때 체계적인 투자 계획이 마련되어야 한다. 국도 도로비탈면의 체계적인 관리와 합리적 투자 계획 수립을 위하여 위험도와 예상피해도를 고려하여 투자우선순위를 산출하였다. 투자우선순위에서 위험도 결정의 주요인자는 경사, 토질, RMR, 안정석해석, 불연속면 종류, 붕괴이력이며, 피해도는 교통량과 차선수, 평균차량위험도를 고려하여 결정하였다. 강원도 영서지방 392개소 비탈면에 대한 투자우선순위 산출 및 회귀분석 결과, 붕괴가 발생된 비탈면의 투자우선순위가 높은 것으로 확인되며, 위험구간비가 높은 비탈면, 계곡부가 존재하는 비탈면이 높은 투자우선순위를 차지하는 것으로 확인된다.

• The Journal of Korean Physical Therapy
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• 제4권1호
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• pp.69-78
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• 1992

The purpose of this survey is to grasp the special school therapeutic education teachers, stress degrees in the real educational fields, and to campare the different stress degrees by the teaching responsibilities, by set by age, by the careers of special teaching profession, by his or her assiduity by the academic careers and teacher qualification, and by the reasons of stress. To perform this survey, the writer analyzed the answer sheets of the questionnairs returned by 85 special school therapeutic education teachers all over the country. The results of the analysis are as follows: First, the mean value of stress by the whole teachers was shown as endurable, and there was no difference among stress towels by the teaching responsibilities. As for the ratio of teachers confronted with the dangerous level of stress. the teachers taking charge of feebleminded school teachers the highest ratio, and those charging of deaf & dumb school teachers, the lowest. Second, the comparison by age didn't result in any difference, but in the relation of age to the handicap division there appeared meaningful differences. That is in the case of the therapeutic education theachers charging of crippled school, it revealed that the older they were, the more stress they suffered. In the case of the teachers charging of visually deaf & dumb school the tendency was opposite. The comparison by the special teaching profession careers, there showed no difference in the stress degree. The high or low academic careers didn't make any influence on the therapeutic education teachers stress degree. Third, The revealed on the highest stress degress, because reasons of relation the student's parents with students behavior.

• 한국주거학회논문집
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• 제26권4호
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• pp.55-62
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• 2015

The international concern on the inhalable fine dust is continuing to increase. In addition to the toxic properties of the fine dust itself, it can be more dangerous than other environmental factors since the dust pollution is hard to be detected by human sense. Although the information on outdoor air condition can be acquired easily, the indoor dust concentration is another problem because the indoor air condition is influenced by the architectural environment and human activity. It means occupants may be exposed to indoor dust pollution over a long period without being aware. Therefore the indoor dust concentration should be measured separately and visualized as an intuitive information. By visualizing, the indoor dust concentration in each space can be recognized practically in compare with the degree of pollution in adjacent spaces. Besides the visualization outcome can be used as base data for related research such as an analysis of the relation between indoor dust concentration and architectural environment. Meanwhile, with the development of network and micro sensing devices, it became possible to collect wide range of indoor environment data. In this regards, this paper suggests a system for visualization of indoor dust concentration and demonstrates it on an actual space.

• Journal of Welding and Joining
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• 제27권5호
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• pp.42-48
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• 2009

Pipe welding is used in various ranges such as civil engineering and ship building engineering. Until now, many technicians work for pipe welding manually under harmful, dangerous and difficult conditions. So it is necessary to install automation process. For automation pipe welding, relation between welding parameters & bead shape should be considered. Using this relation, bead shape could be expected from welding parameters. FCAW was used in this study. Instead of pipe workpiece, fillet joint plate is used, which were inclined 0,45,90,135,180 degree. By analyzing between welding parameters (current, welding speed, voltage) and bead shape parameters with non-linear multiple regression, bead shape parameters could be expected. Piecewise Cubic Hermite Interpolation was used to expect smooth curved bead shape with bead shape parameters. From these processes, bead shape could be expected from welding parameters.

• Journal of Advanced Research in Ocean Engineering
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• 제3권3호
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• pp.136-148
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• 2017

The paper presents dual arm ROV manipulation using deep reinforcement learning. The purpose of this underwater manipulator is to investigate and excavate natural resources in ocean, finding lost aircraft blackboxes and for performing other extremely dangerous tasks without endangering humans. This research work emphasizes on a self-learning approach using Deep Reinforcement Learning (DRL). DRL technique allows ROV to learn the policy of performing manipulation task directly, from raw image data. Our proposed architecture maps the visual inputs (images) to control actions (output) and get reward after each action, which allows an agent to learn manipulation skill through trial and error method. We have trained our network in simulation. The raw images and rewards are directly provided by our simple Lua simulator. Our simulator achieve accuracy by considering underwater dynamic environmental conditions. Major goal of this research is to provide a smart self-learning way to achieve manipulation in highly dynamic underwater environment. The results showed that a dual robotic arm trained for a 3DOF movement successfully achieved target reaching task in a 2D space by considering real environmental factor.

• 한국항해항만학회지
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• 제32권7호
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• pp.521-527
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• 2008

The Istanbul Strait is one of the important waterways in the world. And its southern entrance has a highly congested local traffic. Till now there are several studies regarding how the Istanbul Strait is dangerous to navigate and how those dangers can be mitigated. But there is no study regarding local traffic which is posing great collision risk. In a certain traffic area, marine traffic safety assessment parameters are traffic volume, frequency of collision avoidance maneuver, traffic density, traffic flow and potential encounter, In this paper local traffic volume, traffic flow and potential encounter number of local traffic vessels and possibility of collision are investigated in order to find degree of danger at the southern entrance of the Istanbul Strait. Finally by utilizing those, risky areas are determined for southern entrance of the Istanbul Strait. Results have been compared to a previous study regarding risk analysis at congested areas of the Istanbul Strait (Aydogdu, 2006) and consistency of the results were presented.