• 한국지진공학회논문집
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• 제25권6호
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• pp.283-292
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• 2021

In this study, a structural health monitoring system for cable-stayed bridges is developed. In the system, condition assessment of the structure is performed based on measured records from seismic accelerometers. Response indices are defined to monitor structural safety and serviceability and derived from the measured acceleration data. The derivation process of the indices is structured to follow the transformation from the raw data to the outcome. The process includes noise filtering, baseline correction, numerical integration, and calculation of relative differences. The system is packed as a condition assessment program, which consists of four major processes of the structural health evaluation: (i) format conversion of the raw data, (ii) noise filtering, (iii) generation of response indices, and (iv) condition evaluation. An example set of limit states is presented to evaluate the structural condition of the test-bed and cable-stayed bridge.

• Safety and Health at Work
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• 제12권2호
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• pp.174-183
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• 2021

Background: Toluene diisocyanate (TDI) is a highly reactive chemical that causes sensitization and has also been associated with increased lung cancer. A risk assessment was conducted based on occupational epidemiologic estimates for several health outcomes. Methods: Exposure and outcome details were extracted from published studies and a NIOSH Health Hazard Evaluation for new onset asthma, pulmonary function measurements, symptom prevalence, and mortality from lung cancer and respiratory disease. Summary exposure-response estimates were calculated taking into account relative precision and possible survivor selection effects. Attributable incidence of sensitization was estimated as were annual proportional losses of pulmonary function. Excess lifetime risks and benchmark doses were calculated. Results: Respiratory outcomes exhibited strong survivor bias. Asthma/sensitization exposure response decreased with increasing facility-average TDI air concentration as did TDI-associated pulmonary impairment. In a mortality cohort where mean employment duration was less than 1 year, survivor bias pre-empted estimation of lung cancer and respiratory disease exposure response. Conclusion: Controlling for survivor bias and assuming a linear dose-response with facility-average TDI concentrations, excess lifetime risks exceeding one per thousand occurred at about 2 ppt TDI for sensitization and respiratory impairment. Under alternate assumptions regarding stationary and cumulative effects, one per thousand excess risks were estimated at TDI concentrations of 10 - 30 ppt. The unexplained reported excess mortality from lung cancer and other lung diseases, if attributable to TDI or associated emissions, could represent a lifetime risk comparable to that of sensitization.

• Journal of the Optical Society of Korea
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• 제7권4호
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• pp.234-239
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• 2003

Objective methods to assess quantitatively port wine stain (PWS) blanching in response to laser therapy are needed to improve laser therapeutic outcome. Previous studies have attempted to assess objectively PWS color based on point measurement devices. To date, these approaches have typically been limited by a number of factors such as small test area and need for contact. To address these issues, a polarization spectral imaging system and an image analysis method have been developed to evaluate quantitatively erythema and melanin content distribution in skin. The developed polarization spectral imaging system minimizes artifacts such as glaring, shadowing, and non-uniform illumination that interfere with image fidelity. Furthermore, the image analysis method has been employed to get images of skin melanin and erythema indices from the acquired color images for quantitative analysis. Finally, using PWS patient color image, the effectiveness in laser treatment of PWS was evaluated by calculating relative erythema index image that is the relative erythema index of PWS region to the normal region. The developed device and analysis method appears to be a simple and effective method for quantitative analysis of PWS blanching.

• 교육시설 논문지
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• 제19권1호
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• pp.37-44
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• 2012

This study developed an algorithm to predict the most efficient evacuation protocol in an elementary school that has an irregular type of architectural planning. The assumption of this study takes a stand point that today's elementary schools are designed in unusual and irregular floor type and, therefore, past architect's knowledge regarding efficient evacuation will no longer effective to save lives. In this regard, this study applied an algorithm that is especially designed to find appropriate locations in general in the field of industrial engineering, which has been proven for many decades. Furthermore, this study not only adapted an engineering model but also conversed to examine spatial relationship and added the concept of group evacuation, which will delay the whole evacuation process, in the tested algorithm to make it more architectural. Consequently, this study compared its outcome with an existing elementary school and questioned its effectiveness in evacuation process based on the algorithm.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2003년도 춘계학술대회
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• pp.121-128
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• 2003

본 고는 정보통신연구개발사업 중 2001년도 산업기술개발사업을 수행하는 민간기업의 연구개발비 집행행태를 분석하고 평가등급과의 상관성을 제시하였다. 우수한 결과를 도출한 과제는 실패한 과제와 상이한 연구개발비 집행행태를 보이고 있으며, 집행행태를 토대로 과제의 성공률을 제고하기 위한 관리기법의 논리적 근거를 제시하였다.

• The Korean Journal of Pain
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• 제27권3호
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• pp.297-300
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• 2014

This report describes the long term safety and efficacy of intrathecal therapy using Sufentanil for the management of chronic intractable neuropathic pain in 12 chronic pain patients. Standardized psychological screening was used to determine treatment suitability. Evaluation data included the Visual Analog Scale (VAS), Wong-Baker Faces Scale, Brief Pain Inventory (BPI), Disability of Arm, Shoulder, and Hand (DASH), McGill Quality of Life Questionnaire, and complications (granulomas, toxicity, withdrawal, or deaths). SPSS version 18 was used for data analysis. Pre- and post- treatment BPI measures and pain scale scores showed a statistically significant difference. There were no complications directly related to drug toxicity, nor drug withdrawals, granulomas, or deaths. Intrathecal therapy with Sufentanil therapy offers a good treatment alternative for those cases that have failed both surgery and standard pain treatment. Strict patient selection based on psychological screening, control of co-morbidities, a proper pain management may contribute to successful outcome.

• 한국철도학회:학술대회논문집
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• 한국철도학회 1998년도 창립기념 춘계학술대회 논문집
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• pp.137-159
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• 1998

For the construction of railroads in Metropolytan area based upon the outcome of the future demand forecast, a total of 21 lines including electrified double track segment of Ui-Jung-Bu↔Dong-Du-Chun(18.9km) in Kyung-Won Line is expected. Considering the financial difficulties and investment effect of the lines, this in the sequel brings about an important matter of deforming priority Investment plan to build electrified lines among the candidates. In the case of Japan, Tokyo metropolytan area covered In total by 2,070.1km of various lines, i.e., subway lines(241km), private lines(952.7km), JR lines(876.4km), provides convenient means of transportation for the coummuters and makes a contribution to the development of its neighboring areas and to the expansion of settlement areas. Comparing the total length per 1,000$\textrm{km}^2$, Tokyo(105), Paris(117), and London(115) are at least 6 times as large as ours(15). The purpose of this study is two fold provide a basic scheme for building railroads in metropolytan area and determine priority order in accordance with some evaluation criteria.

• 사회복지연구
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• 제47권4호
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• pp.333-360
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• 2016

본 연구는 전세계 42개 SIB 사업의 운영구조를 검토하고, 주요 단계별 핵심기준을 중심으로 유형화 분석을 실시하였으며, 이를 토대로 SIB의 향후 방안에 대해 모색하였다. 분석의 결과는 다음과 같다. 첫째, SIB의 기획은 중앙정부의 부처가 기획한 경우가 과반수 이상을 차지하고 있었다. 투자자 구성은 2-3개 조직이 공동투자하는 경우가 일반적이었는데, 이 때 사회적금융조직이 투자자로 포함된 경우가 54.8%로 가장 많았지만, 민간 투자은행이나 고액 투자자가 참여하는 경우도 33.3%로 나타났다. 둘째, 서비스의 제공은 단일조직에서 수행하는 경우가 전체 분석사례 중 73.8%였고, 제공되는 서비스 중에서 74%가 아동과 청소년을 대상으로 하고 있었다. 셋째, 성과평가는 특정기준에 도달할 경우 성과를 지급하는 방식인 '성과표' 방식이 전체 사례 중 64.3%로 가장 많았지만, 유사한 집단과의 비교를 통해 성과를 평가하는 경우도 23.8%나 존재했다. 넷째, 유형화 분석 결과 세 개의 유형이 도출되었다. 첫번째로 도출된 유형은 '중앙정부-사회적 금융 결합형'으로서 중앙정부가 기획하고 사회적 금융조직이 주요한 투자자가 되면서 성과표를 중심으로 성과급을 지급하는 형태이다. 두 번째로 도출된 유형은 '복합참여형'으로서, SIB의 단계별로 참여하는 주체들이 가장 다양할 뿐만 아니라, 성과평가 과정에서도 가장 체계적인 절차를 보여주고 있다. 서비스는 주로 단일 기관에서 제공되고 있지만, 비교집단을 통한 유사실험설계를 활용한 성과평가를 하는 것이 특징이다. 마지막 유형은 '서비스기관 다수형'으로서, 유형의 고유한 특이점이 발견되지는 않았으나, 서비스를 제공하는 기관이 복수라는 공통점이 있었다. SIB에 대한 통계적 유형화를 처음으로 시도한 본 연구는 운영구조에 대한 개괄적 설명이나 단순나열식 비교에서 더 나아가지 못하고 있는 SIB 관련 연구를 보다 체계화시켰다는 의의가 있다. 또한, SIB를 기획하는데 있어 주요 단계별 고려해야 하는 이슈 및 쟁점에 대해 구체적인 정보를 제공하였으며, 지방정부나 민간조직이 SIB를 기획하는 경우에는 투자자 구성이나 참여하는 주체의 만족을 위하여 성과평가 및 관리와 관련된 방안을 보다 체계적으로 구성하는 것이 효과적인 전략임을 제안하였다. 뿐만 아니라 본 연구는 SIB의 등장 배경인 다양한 주체간 협치와 네트워크가 보다 활발하게 전개되기 위해서는 기획자나 투자자 구성이 보다 확대될 필요가 있음을 제안하였다.

• 한국산업보건학회지
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• 제29권2호
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• pp.141-158
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• 2019

Objectives: An adverse outcome pathway is a biological pathway that disturbs homeostasis and causes toxicity. It is a conceptual framework for organizing existing biological knowledge and consists of the molecular initiating event, key event, and adverse output. The AOP concept provides intuitive risk identification that can be helpful in evaluating the carcinogenicity of chemicals and in the prevention of cancer through the assessment of chemical carcinogenicity predictions. Methods: We reviewed various papers and books related to the application of AOPs for the prevention of occupational cancer. We mainly used the internet to search for the necessary research data and information, such as via Google scholar(http://scholar.google.com), ScienceDirect(www.sciencedirect.com), Scopus(www.scopus. com), NDSL(http: //www.ndsl.kr/index.do) and PubMed(http://www.ncbi.nlm.nih.gov/pubmed). The key terms searched were "adverse outcome pathway," "toxicology," "risk assessment," "human exposure," "worker," "nanoparticle," "applications," and "occupational safety and health," among others. Results: Since it focused on the current state of AOP for the prediction of toxicity from chemical exposure at work and prospects for industrial health in the context of the AOP concept, respiratory and nanomaterial hazard assessments. AOP provides an intuitive understanding of the toxicity of chemicals as a conceptual means, and it works toward accurately predicting chemical toxicity. The AOP technique has emerged as a future-oriented alternative to the existing paradigm of chemical hazard and risk assessment. AOP can be applied to the assessment of chemical carcinogenicity along with efforts to understand the effects of chronic toxic chemicals in workplaces. Based on these predictive tools, it could be possible to bring about a breakthrough in the prevention of occupational and environmental cancer. Conclusions: The AOP tool has emerged as a future-oriented alternative to the existing paradigm of chemical hazard and risk assessment and has been widely used in the field of chemical risk assessment and the evaluation of carcinogenicity at work. It will be a useful tool for prediction, and it is possible that it can help bring about a breakthrough in the prevention of occupational and environmental cancer.

• 근관절건강학회지
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• 제18권2호
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• pp.169-181
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• 2011

Purpose: This paper presents the development process and the final contents of the sellf- management education program integrated with exercise training (Healthy Aging Happy Aging, HAHA program) for community residing older adults with chronic diseases. Methods: The program evaluation methodology was applied which is an interactive program development process based on needs assessment, formative evaluation, process evaluation and outcome evaluation. The program was developed and revised while the program was implementing to 22 hypertension (HT) and 32 diabetic (DM) participants. Results: The final program has two sub-programs for HT and DM participants utilizing self-efficacy resources. They share four common components; 1) health screening of exercise risks, 2) weekly 1-hour group self-management education classes, 3) biweekly 1-hour group exercise training and 4) a mid-term individual counseling. Both sub-programs were 12-weeks long but have different education and exercise contents. Participants-rated mean satisfaction scores were 3.47/4 and 3.61/4 for HT and DM program respectively. Attendance rate were 83.1% ~ 92.3% for the classes. Conclusion: The HAHA program developed by multidisciplinary team which reflected participants needs was accepted well by participants evidenced by high attendance rate and perceived satisfaction level.