• 한국건설순환자원학회논문집
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• 제4권4호
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• pp.379-387
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• 2016

본 연구에서는 지하부위의 누수 예방 기술 정책 수립을 위한 방수 성능 분석 연구에 대하여 설문조사를 실시하고 이를 분석하였다. 설문 분석 결과, 현재 공동주택 지하공간에 대한 누수는 심각하며, 응답자 대부분도 이를 심각하게 인식하고 있다. 환경을 고려하지 않은 누수설계 및 누수예방 설계의 부재, 환경에 적합하지 않은 시공 시스템의 활용이 누수문제의 주요 원인이라 판단되었으며, 이를 개선하기 위하여 지하부위 외방수공법의 도입을 의무화하고, 설계시 공동주택 지하부위에 적용할 수 있는 표준 방수 기술 및 공법을 수립해야 될 것이며, 지하 시공환경을 고려한 방수 시공방법의 개발의 필요성이 강조되었다. 따라서 상기의 상황을 미루어 볼 때 법-제도에 의해 명시된 방수설계, 재료 및 공법, 유지관리 등을 방수시공의 전반적인 상황 컨트롤할 수 있는 가이드라인의 제시는 필수요소로 부각되었다.

• 한국지반환경공학회 논문집
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• 제10권1호
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• pp.49-54
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• 2009

지진동에 대한 사면의 안정성은 일반적으로 지진계수를 이용하여 지진하중을 유사정적 하중으로 단순화하여 한계평형법으로 평가된다. Transient 지진동은 지진계수를 이용하여 정적하중으로 대체된다. 하지만, 유사정적 해석결과에 절대적인 영향을 미치는 지진계수는 합리적인 물리적 근거 없이 산정된다. 또한 내진설계기준에 의거하여 산정되는 최대가속도는 사면의 진동특성을 반영한다고 볼 수 없으며, 이를 정확하게 예측하기 위해서는 2차원 동적해석을 수행해야 한다. 본 연구에서는 수정된 1차원 동적해석과 유사정적해석을 연결한 Hybrid 유사정적 해석법을 제안하였다. 기존의 해석기법은 깊이에 따라서 변이하는 가속도를 고려할 수 없기에 신뢰성 있는 사면의 안정성 예측이 어려운 실정이다. 수정된 1차원 지반응답해석은 깊이에 따른 사면 무게변화를 모델링하기 위하여 층의 밀도를 조정하였으며 위치별 진동가속도를 예측하기 위해서 다수의 해석을 수행하였다. 2차원 유한요소해석과 비교한 결과, 수정된 1차원 해석은 2차원 해석과 일치성이 우수한 것을 확인할 수 있었다. 해석결과를 유사정적해석에 입력하여 깊이에 따라서 변이하는 가속도 주상도를 적용하였으며 기존의 해석방법으로 계산된 안전율과 비교하였다. 비교 결과, 계산된 안전율에는 큰 차이가 발생하는 것으로 나타났으며, 기존의 해석기법으로 안전율을 예측할 경우, 매우 비현실적인 값을 계산할 수 있다. 본 연구에서 개발된 기법은 해석의 신뢰성을 현격하게 향상시키는 것으로 나타났다.

• 한국사회복지학
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• 제56권2호
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• pp.215-235
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• 2004

가족과 관련하여 우리나라가 경험하는 극심한 사회변동중의 하나는 재혼의 급증이다. 2002년 전체 혼인의 21%를 차지할 정도의 재혼율 상승, 여성 재혼율의 남성우위현상, 재혼의 불안정성과 높은 재이혼율 등은 사회적 관심과 개입을 요구한다고 하겠다. 이러한 배경에서 증가하는 재혼가족의 건강한 기능을 위해 사회복지적 개입이 필요함을 강조하고, 구체적으로 재혼가족 기능향상을 위한 프로그램의 기본적 방향과 관점을 제시하고자 본 연구를 시도하였다. 연구 결과에서 관심을 끄는 사실은 재혼의 놀라운 증가와는 달리 재혼생활에 대해 알려진 바가 거의 없다는 점, 재혼자들이 재혼에 대한 준비를 거의 하지 않는다는 점, 대신에 재혼에 대한 비현실적인 환상과 사회적 통념만이 크게 존재한다는 점 등이었다. 따라서 재혼가족을 지원하는 프로그램은 재혼을 둘러싸고 존재하는 많은 환상들에 도전하여 재혼의 실체를 현실적으로 인식시켜야 함을 제안하였다. 또한 재혼을 초혼에 준거하여 바라보는 것은 적절치 않으며, 재혼가족 나름의 발달과정을 거치며, 재혼가족에서 보이는 갈등이나 마찰은 하나의 새로운 가족으로 발달하는 과정에서 나타나는 정상적 현상으로 보아야 함을 강조하였다.

• 한국가스학회지
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• 제21권6호
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• pp.88-95
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• 2017

국내에서 독성가스의 사용은 반도체, 디스플레이 및 태양광 등 첨단산업의 발전에 따라 증가하고 있는 추세이다. 최근 5년간 국내 독성가스 소비량 현황을 살펴보면 연평균 12% 정도 증가 추세에 있지만, 아직까지 사용에만 관심이 집중되고 있고, 사후 처리나 안전에는 다소 소홀한 것이 사실이다. 2012년 9월 발생한 구미 불산 누출사고는 이러한 안전관리 부재를 단적으로 보여주는 사례이다. 이 사고로 인하여 정부, 업계 및 학계에서는 화학물질(독성가스) 누출사고 등에 대한 관심을 갖게 되었고, 정부 주도로 화학물질안전관리대책 등이 수립되어 추진되어 왔지만 아직까지 안전관리 사각지대가 많은 실정이다. 본 연구에서는 반도체, 디스플레이 업종에서 사용되는 저감설비에서 배출되는 가스상 물질에 대한 처리효율에 대한 효과적인 측정방법을 개발하는 것이 목적이다. 국립환경과학원과 UNFCCC에서 제시하는 반도체 & 디스플레이 업종에서 사용되는 온실가스 저감시설의 처리효율 측정방법 가이드라인에 대해 실증시험을 통해 맹독성가스 시설에도 오차 범위 내에서 적용 가능한지를 살펴보고 맹독성가스 저감시설에 대한 차별화된 효율성 측정 방법을 제시하였고, 독성가스 사고에 대한 선제적 예방을 위해서 독성가스 저감시설 등 안전설비에 대한 제3자 인증제도 도입의 필요성을 제안하였다.

• 대한인간공학회지
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• 제34권1호
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• pp.29-43
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• 2015

Objective: The aim of this study is to develop management guidelines and a procedure for an anthropometric suitability assessment of the main control room (MCR) in nuclear power plants (NPPs). Background: The condition of the MCR should be suitable for the work crews in NPPs. The suitability of the MCR depends closely on the anthropometric dimensions and ergonomic factors of the users. In particular, the MCR workspace design in NPPs is important due to the close relationship with operating crews and their work failures. Many documents and criteria have recommended that anthropometry dimensions and their studies are one of the foremost processes of the MCR design in NPPs. If these factors are not properly considered, users can feel burdened about their work and the human errors that might occur. Method: The procedure for the anthropometric suitability assessment consists of 5 phases: 1) selection of the anthropometric suitability evaluation dimensions, 2) establishment of a measurement method according to the evaluation dimensions, 3) establishment of criteria for suitability evaluation dimensions, 4) establishment of rating scale and improvement methods according to the evaluation dimensions, and 5) assessment of the final grade for evaluation dimensions. The management guidelines for an anthropometric suitability assessment were completed using 10 factors: 1) director, 2) subject, 3) evaluation period, 4) measurement method and criteria, 5) selection of equipment, 6) measurement and evaluation, 7) suitability evaluation, 8) data sharing, 9) data storage, and 10) management according to the suitability grade. Results: We propose a set of 17 anthropometric dimensions for the size, cognition/perception action/behavior, and their relationships with human errors regarding the MCR design variables through a case study. The 17 selected dimensions are height, sitting height, eye height from floor, eye height above seat, arm length, functional reach, extended functional reach, radius reach, visual field, peripheral perception, hyperopia/myopia/astigmatism, color blindness, auditory acuity, finger dexterity, hand function, body angle, and manual muscle test. We proposed criteria on these 17 anthropometric dimensions for a suitability evaluation and suggested an improvement method according to the evaluation dimensions. Conclusion: The results of this study can improve the human performance of the crew in an MCR. These management guidelines and a procedure for an anthropometric suitability assessment will be able to prevent human errors due to inadequate anthropometric dimensions. Application: The proposed set of anthropometric dimensions can be integrated into a managerial index for the anthropometric suitability of the operating crews for more careful countermeasures to human errors in NPPs.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제22권4호
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• pp.271-286
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• 2011

Objectives : The purposes of this study were to develop a mental health screening questionnaire and the practical intervention programs or guidelines which can be used in middle and high schools by students and teachers. Methods : The Adolescent Mental health & Problem behavior Screening Questionnaire II (AMPQ-II) was developed and was tested for reliability and validity using nationwide data from 2,180 middle and high school students and 2,145 teachers. Results : The AMPQ-II was measured by both students and teachers. The correlation coefficient of the test-retest test was 0.567 and internal consistency was high (Cronbach's alpha=0.878). Five factors such as worry and thought, mood and suicide, academic and Internet-related problems, peer problems, and rule violations were proposed. We also developed a practical guideline and manuals which can be easily used by secondary school teachers to screen for and manage mental health problems at school. Conclusion : The AMPQ-II can be a useful and reliable tool to screen for mental health problems in middle and high schools in South Korea.

• 대한지역사회영양학회지
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• 제17권2호
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• pp.167-181
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• 2012

Our society is aging rapidly, and the number of elderly people who are in charge of purchasing and preparing foods at home is increasing. However, most the elderly have difficulty managing nutrition and food safety by themselves. The purpose of this study was to develop the necessary knowledge, through focus group interview and Delphi technique to establish a food safety and nutrition education program. The diet and educational needs of the elderly were surveyed through FGI. The education topics were decided by the Delphi technique. The education program consisted of a five week program, and the topics taught were 'Dietary Change for Healthy Life', 'Prevention of Food Poisoning in Everyday Life', 'Safe Food Handling for my Health', 'Healthy Dietary Life to Prevent Chronic Disease', and 'Safety! Nutrition! Healthy Dietary Life'. This education program was designed to decrease the perceived barriers, and to increase the perceived interests and the sense of self-efficacy. Education program materials, lesson plans, slides, handouts, videos, leaflets, and booklets were developed. Based on the results, the contents of the food safety guideline leaflets for the elderly were decided as the following: (1) wash your hands in the correct way; (2) select safe food; (3) cook foods safely; (4) keep foods safely; (5) keep kitchen utensils clean. In conclusion, if advanced education programs are implemented and delivered continuously in locations such as health centers and community welfare centers, those will contribute significantly to enhance the perception of food safety and to change the desirable dietary behavior of the elderly.

• 한국입자에어로졸학회지
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• 제6권1호
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• pp.9-20
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• 2010

This study examined the concentration level of the major air pollutants in public transportation. The study was conducted between February 2009 and March 2008 at Suwon-Yeosu line in Korea. $PM_{10}$ concentration level was $100{\mu}g/m^3$ on average. The $PM_{2.5}$ to PM10 ratio in transport is 0.37, which was lower than the results published by other researches. The result also demonstrated that outdoor $PM_{10}$ concentration was about 56~60% level compared to that of the cabin. $CO_2$ concentration level in the cabin was 1,359ppm, which does not exceed 2,000ppm, which is the guideline concentration level according to the Ministry of Environment. $CO_2$ concentration level in the cabin was $CO_2=23.4{\times}N+460.2$, and about 23.4ppm in $CO_2$ concentration level increased every time one passenger was added on. The experiment conducted on the train demonstrated that the average $PM_{10}$ concentration level was $100{\mu}g/m^3$ in case of the reference cabin while average $PM_{10}$ concentration level of the modified vehicle was $68{\mu}g/m^3$. Likewise, effect of the particle reduction device for the reduction of $PM_{10}$ concentration level was approximately 21%. Meanwhile there was almost no difference in the concentration level between reference and modified cabin in case of $PM_{2.5}$. Using zeolite as an adsorbent was made to reduce the $CO_2$ concentration level in the cabin. Number of passengers was factored in, to calculate the effect of the adsorption device, which demonstrated that about 36% of $CO_2$ concentration level was reduced in the modified cabin effect of the $CO_2$ reduction device. This research analyzed the current status concerning the quality of air in the public transportation and technologies were developed that reduces major air pollutants.

• 약학회지
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• 제54권5호
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• pp.348-353
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• 2010

The dissolution test method and an analytical procedure by HPLC were developed and validated for viquidil hydrochloride capsules and alibendol tablets. These drugs were not yet characterized by the dissolution specifications in Korean Pharmaceutical Codex. So, with each reference and test drugs, we did the preliminary and standard experiments based on the Korean Pharmacopeia Guideline of dissolution testing for solid oral dosage forms. The dissolution test for viquidil hydrochloride capsules was carried out under sink conditions as follows: dissolution medium water, paddle rotation speed 50 rpm and vessel volume 900 ml. More than 90% of its label amount was released within 30 min in this method. Also the dissolution test for alibendol tablets was carried out under sink conditions as follows: dissolution medium water, paddle rotation speed 100 rpm and vessel volume 900 ml. More than 90% of its label amount was released within 45 min in this method. The dissolution samples were analyzed with a precise and accurate HPLC method. The developed dissolution test showed specificity, linearity, precision and accuracy within the acceptable range. The dissolution testing method described above was adequate for the purpose and may be proposed as a pharmacopeial standard to assess the performance of viquidil hydrochloride capsules and alibendol tablets.

• 약학회지
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• 제55권5호
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• pp.411-418
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• 2011

The dissolution test method and an analytical procedure by HPLC were developed and validated for nafronyl oxalate capsules and tramadol hydrochloride capsules. These drugs were not yet characterized by the dissolution specifications in the Korean Pharmaceutical Codex. So, with each reference and test drugs, we did the preliminary and standard experiments based on the Korean Pharmacopeia Guideline of dissolution testing for solid oral dosage forms. The dissolution test for nafronyl oxalate capsules was carried out under sink conditions as follows: dissolution medium phosphate buffer pH 6.8, paddle rotation speed 100 rpm and vessel volume 900 ml. More than 80% of its label amount was released within 30 min in this method. Also the dissolution test for tramadol hydrochloride capsules was carried out under sink conditions as follows: dissolution medium water, paddle rotation speed 50 rpm and vessel volume 900 ml. More than 90% of its label amount was released within 15 min in this method. The dissolution samples were analyzed with a validated HPLC analytical procedure. The analytical methodology showed acceptable values in terms of specificity, linearity, precision and accuracy. The dissolution test methods described above were adequate for the purpose and may be proposed as a pharmacopeial standard to assess the performance of nafronyl oxalate capsules and tramadol hydrochloride capsules. Furthermore, the outcomes of this study were expected to help create an environment where safe and high quality drugs would be distributed on the domestic market making contributions to advancing public health.