• 한국산업보건학회지
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• 제30권1호
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• pp.28-38
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• 2020

Objectives: The purpose of this study is to identify the perceived problems of and suggest improvement measures for asbestos abatement companies in support of asbestos-related systems and policies. Methods: For this study a questionnaire was prepared consisting of current work (two questions), the contribution and necessity of a risk assessment system for asbestos abatement (two questions), and problems with and improvement measures for systems and policies (nine questions). The questionnaires were sent to 2,170 asbestos abatement companies and were returned by 83 companies (return rate = 3.8%). We conducted frequency analysis, ANOVA, and a Chi-squared test at the 5% significance level. Results: Asbestos abatement companies expressed difficulties with complying with wet work (43% of unenrolled managers), negative pressure enclosure (36% of all respondents), and installation and use of decontamination units (26% of all respondents) as stipulated in the relevant regulations. In addition, 43% of the respondents expressed concerns that the expertise of the company was not considered during bidding for asbestos abatement and hoped that an advantage (e.g., bid point) would be given to the upper grades for asbestos risk assessment (38%). Asbestos abatement companies generally rented and used negative pressure devices (including negative pressure recording devices) and suggested that periodic calibration (32%) is needed to ensure the performance of the rented equipment. Finally, the respondents asked for clear definitions for three situations specified in the Occupational Safety and Health Acts: (1) temporarily leaving the asbestos abatement workplace; (2) tasks with less airborne asbestos; and (3) physically breaking or cutting using a machine. Conclusions: The problems and improvement measures identified in this study of asbestos abatement companies can be utilized as fundamental information for the improvement of the systems and policies for safe asbestos abatement.

• 한국산업보건학회지
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• 제30권2호
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• pp.205-212
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• 2020

Objectives: The purpose of this study was to identify the needs and improvement measures of the risk assessment system through a survey of asbestos abatement companies. Methods: This study prepared a questionnaire that includes improvement measures for the risk assessment system(six questions) and the necessity of a risk assessment system for asbestos abatement(one question). The questionnaire was sent to 2,170 asbestos abatement companies and returned by 83 companies(return rate = 3.8%). We conducted frequency analysis, ANOVA, and Chi-squared testing at the 5% significance level. Results: This study analyzed the survey results and identified six main opinions on the risk assessment system and improvement measures. First, giving an advantage to companies with a high grade(S and A grades) in public bidding and/or qualification screening showed a similar preference(agree: 50.6%, disagree: 49.4%). Second, 57.6% of the respondents wanted to allow air showers along with water showers for low risk asbestos work. However, 23.2% of the respondents asserted that only a water shower should be allowed since there is no scientific evidence supporting the removal of asbestos by air shower. Third, in order to prevent missing the enrollment of workers, simply submitting a change report should be allowed when any worker is changed (40.0%). Fourth, 43% of the respondents answered that they did not know how to calculate the proper number of negative pressure units. The reasons given were a lack of guidelines or standards(38.9%), inconvenience (36.1%), and absence of education(25%). Fifth, the respondents who were favorable toward the necessity of a risk assessment system gave higher scores compared to unfavorable respondents on the necessity of the management of workers' work history(favorable respondent = 3.96 out of 5, unfavorable respondent = 2.68) and the necessity of professional training for workers(favorable respondent = 3.71, unfavorable respondent = 2.56). Finally, the respondents favorable toward a risk assessment system showed higher scores on the awareness of calculating the proper number of negative pressure units(4.79) compared to unfavorable respondents(3.3). Conclusions: The opinions of asbestos abatement companies identified through the survey in this study can be usefully utilized as fundamental information to improve the risk assessment system.

• 한국신뢰성학회지:신뢰성응용연구
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• 제12권3호
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• pp.165-176
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• 2012

Hydrostatic bearing improves performance and life time of a product by avoiding solid friction and reducing viscosity friction with the help of creating pressure equilibrium between two faces doing relative motion. This study suggests failure analysis and test evaluation for a ball joint that adopts the hydrostatic bearing and introduces the entire process to improve reliability of the product by design improvement. A typical failure is growth of friction torque by solid friction, and its failure cause is determined and the improvement is proposed. Finally, reliability improvement is established by analysis of the results of before and after acceleration test.

• 대한안전경영과학회지
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• 제7권4호
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• pp.73-83
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• 2005

The goal of this study is to propose the improved scheme that prevents the workers against musculoskeletal disorders at a fishcake manufacturing company, A questionnaire and an ergonomic assessment method were adopted to analyze the symptoms of workers' musculoskeletal disorders, and an analysis of working postures and a quantitative assessment on various processes were performed to find out harmful factors of workplace. Based on the result of the evaluation, to enhance the working environment, improvement of worktable, working space, tools, and outfit was suggested, and induction of mechanical system was also suggested. Suggested improvement plan was applied to the workplace step by step and it is confirmed that improvement plan can removes the injurious factors of musculoskeletal diseases effectively.

• 아동학회지
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• 제29권1호
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• pp.275-292
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• 2008

This study investigated the effects of a teaching process using dynamic assessment for a unit on young children's measurement ability. Subjects were 45 5-year-old children in a kindergarten in Busan. The instrument was the Dynamic Assessment Tools for Young Children's Measurement Ability (Hwang & Ko, 2(07). Assessment consisted of four steps: pre-test, learning, transfer, post-test. Results were that at post-test, there were significant differences in scores of measurement ability between the dynamic assessment and control groups. In the dynamic assessment group there was significant improvement in length, width and weight between pre- and post-tests and there were significant shifts of measurement strategies and measurement errors between the pre- and post-tests.

• 환경영향평가
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• 제2권2호
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• pp.33-39
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• 1993

Public participation in the Environmental Impact Assessment(EIA) has been implemented since the August 1 of 1991 with the Environmental Policy Act promulgation in the August 1 of 1991. It is structured to comment on draft Environmental Impact Statement(EIS) through open reviewing, public meeting and hearing. Though public participation has an important role in determining environmental significance, it is room for improvement. With positive public participation and system development such as Environmental Impact Assessment Act on June 11 of 1993, the effectiveness of it will be improved. This article is composed of status of public participation, comparison with other countries, comparison analysis by items of EIS prepared before and after public participation, and contents of public opinions in EIS.

• KIEAE Journal
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• 제11권2호
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• pp.45-57
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• 2011

As climate change and environmental degradation become more evident, the public's concern and knowledge on sustainable development requires planners to have regards to social impacts and long term economic viability, as well as environmental impacts. The main objective of this study is to analyze existing sustainability assessment tools for single detached houses. The most widely used oversea tools are selected. From analysis on the existing assessment tools, "Impact Estimator" by Athena Institute, "Bees 4.0" by NIST, "CASBEE for Home" by JSBC, "Envest for Housing" by Energy Saving Trust, "LISA" by Center for Sustainable Technology, "SBTool" by iiSBE (International Initiative for Sustainable Built Environment), it can be seen that the current sustainability assessment programs are in need of much improvement. The selected programs are analyzed on scope of program setting & running, data input & output, assessment categories, and strength & weakness. This study is to supplement the existing sustainability assessment tools for single detached houses, and provide information for the development of web-based program to assist architects or home owners to plan sustainable houses in Korea in the schematic design stage.

• 한국환경복원기술학회지
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• 제21권1호
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• pp.13-30
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• 2018

In terms of environmental friendly land use and objective environmental assessment, legislative assessment items of Environmental Conservation Value Assessment Map (ECVAM) consists of designated areas related to conservation and protection, and areas that are planned to be designated in the future. However, the gap with the reality due to omission of several protection areas and land use regulations, and assessment grades according to 3 division land use map of forest, agricultural land, and urbanized area, results in low application and utilization of ECVAM. Therefore in this study, the legislative assessment of the ECVAM was performed with new assessment items and its new ratings, to suggest an improvement in legislative assessment items of the ECVAM. As a result, legally protected areas of inhabited islands under absolute conservation, special wildlife protection districts, protected marine areas, environmental preservation sea areas, scenic spots, forest protection zone, traditional temple preservation zone, and 45 zone or district related to regulation of land use were additionally designated as new legislative assessment items. New grade ratings were given to each additional assessment items in consideration of the restrictions on acts. As a result of the legislative assessment based on the new assessment items and new grades, the 1st grade area increased by 3.47%, and the 2nd grade area increased by 19.35%. The 3rd grade area decreased by 8.54%, the 4th grade area increased by 2.95%, and 5th grade increased by 2.91%. In addition, the out-of-grade area decreased by 20.14%, considered to be a realistic assessment based on land use. With the improved legislative assessment, it is possible to provide a more accurate environmental assessment map. Increase usage of ECVAM is expected in providing regulations of land use and base data for integrated land management of land environmental planning.

• 해양환경안전학회지
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• 제24권6호
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• pp.637-645
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• 2018

본 연구는 마산항 일부 정박지의 잠정 폐쇄로 인한 정박지 부족 문제를 분석하고 이를 개선하기 위한 방안을 제시하는 것이다. 이를 위해 마산항 정박지 가동률 평가기준 수립 및 마산항 정박지 이용 부선 규모를 추정하여 최근 5년간의 정박지 가동률을 분석하였으며, 정박지 규모의 적정성 평가 후 문제점 분석 및 개선안을 제시하고 이를 최종 검증하는 절차로 연구를 수행하였다. 연구 결과, 마산항 A-2, A-4, A-6 정박지는 가동률 평가 기준인 60 %를 초과하여 정박지 확대가 필요한 것으로 분석되었다. 이에 정박지 개선을 위해 A-2, A-4, A-6 정박지를 통합하여 마산항의 정박지 이용선박 선종 및 대기시간 등을 고려하여 집단정박지 방식으로 설정하고 정박지 규모를 기존 대비 1.8배 확장하는 안을 제시하였다. 그리고 이 개선안의 검증 결과, 마산항 정박지 가동률이 기존 대비 약 1/2 감소하여 적정성 평가기준을 대부분 만족하였으며, 해상교통측면에서 문제가 없는 것으로 분석되었다.

• 한국정보통신학회논문지
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• 제19권5호
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• pp.1251-1258
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• 2015

최근 사이버 무기의 발전으로 사이버전의 위협이 점점 더 증가되고 있다. 이미 사이버전을 경험한 국가들은 피해가 사이버상에서만 국한 되는 것이 아니라 물리적인 피해까지 영향을 받게 되어 피해가 상당하다. 이렇기 때문에 각국은 사이버전에 대비하기 위해 끊임없이 노력을 하고 있다. 먼저, 사이버전을 대비하기 위해서는 각국의 사이버전 역량이 파악되어야 하며, 비교 / 분석을 통해 사이버전 대응방안을 모색해야 한다. 본 논문에서는 기존 사이버전의 역량평가 방법에 대해서 비교 / 분석해보고, 향상점을 도출하여 사이버전 역량 평가 개선안을 연구하였다. 개선된 사이버전 역량 평가를 통해서 한국에 영향을 줄 수 있는 국가들을 대상으로 사이버전 역량 평가를 실시하였으며, 평가 결과를 비교 / 분석함으로 한국의 사이버전 역량의 보완점을 도출하여 사이버전 역량 강화 방안을 제시하였다.