• 한국지반환경공학회 논문집
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• 제18권12호
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• pp.47-57
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• 2017

본 연구에서는 도심지 토사재해 예비중점관리 대상지역 중 총 6개 연구지역(춘천, 성남, 세종, 대전, 미량, 부산)을 선정하여 토사재해 위험지 예측 분석을 실시하였다. 분석에 사용된 모델은 현재 토사재해 위험지 예측에 보편적으로 사용되고 있는 기존 모델(SINMAP, TRIGRS)과 본 연구를 통해 개발된 프로그램(LSMAP)을 활용하였으며, 결과 비교분석을 통해 개발모델의 적용성을 검토하였다. 토사재해 위험지 예측에 사용되는 매개변수는 크게 지형특성, 토질특성, 임상특성, 강우특성으로 분류하였으며, 각 모델에 따른 토사재해 위험지 예측 분석 결과 LSMAP 및 TRIGRS에 비해 SINMAP을 이용한 분석은 대체로 위험지를 광범위하게 예측하였다. 이러한 결과는 모델별 적용되는 분석 매개변수의 차이에 의한 것으로 판단된다. 또한 임상특성을 고려한 LSMAP은 TRIGRS 결과와 비교하였을 때 예측 위험지 기준 -0.04~2.72%의 범위 내로 유사한 경향을 보이는 것으로 분석되었다. 이는 산지에 분포하는 임상 정보가 비탈면 안정에 다양한 영향을 미치는 것이라 할 수 있으며, 토사재해 위험지 예측에 중요한 매개변수임을 알 수 있다.

• Environmental Analysis Health and Toxicology
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• 제31권
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• pp.11.1-11.6
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• 2016

Objectives A hazard assessment of di(2-ethylhexyl) phthalate (DEHP), a commonly used workplace chemical, was conducted in order to protect the occupational health of workers. A literature review, consisting of both domestic and international references, examined the chemical management system, working environment, level of exposure, and possible associated risks. This information may be utilized in the future to determine appropriate exposure levels in working environments. Methods Hazard assessment was performed using chemical hazard information obtained from international agencies, such as Organization for Economic Cooperation and Development-generated Screening Information Data Set and International Program on Chemical Safety. Information was obtained from surveys conducted by the Minister of Employment and Labor ("Survey on the work environment") and by the Ministry of Environment ("Survey on the circulation amount of chemicals"). Risk was determined according to exposure in workplaces and chemical hazard. Results In 229 workplaces over the country, 831 tons of DEHP have been used as plasticizers, insecticides, and ink solvent. Calculated 50% lethal dose values ranged from 14.2 to 50 g/kg, as determined via acute toxicity testing in rodents. Chronic carcinogenicity tests revealed cases of lung and liver degeneration, shrinkage of the testes, and liver cancer. The no-observed-adverse-effect level and the lowest-observed-adverse-effect level were determined to be 28.9 g/kg and 146.6 g/kg, respectively. The working environment assessment revealed the maximum exposure level to be $0.990mg/m^3$, as compared to the threshold exposure level of $5mg/m^3$. The relative risk of chronic toxicity and reproductive toxicity were 0.264 and 0.330, respectively, while the risk of carcinogenicity was 1.3, which is higher than the accepted safety value of one. Conclusions DEHP was identified as a carcinogen, and may be dangerous even at concentrations lower than the occupational exposure limit. Therefore, we suggest management of working environments, with exposure levels below $5mg/m^3$ and all workers utilizing local exhaust ventilation and respiratory protection when handling DEHP.

• 보건행정학회지
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• 제11권1호
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• pp.62-86
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• 2001

This study purports to Investigate the determinant of job satisfaction and the organizational commitment of medical insurance review nurses working at Korean hospitals. The independent variables contain three groups of determinants: organizational characteristics variables(job autonomy, work unit control, role variety, role ambiguity, role conflict, workload, resource inadequacy, coworker support, supervisor support, distributive justice, promotional chances, job security, and job hazard), environmental variables(job opportunity, spouse support, and parent support), and psychological variables (met expectation, work involvement, positive affectivity, and negative affectivity). The sample used in this study consisted of 445 medical insurance review nurses from 89 hospitals nationwide. Data were collected with self-administered questionnaires and analyzed using multiple regression analysis. The results of the study are as follows : 1) the following variables, listed in order of size, have significant effects on job satisfaction : role ambiguity(－), distributive justice(＋), work involvement(＋), role variety(＋), met expectation(＋), negative affectivity(－), job autonomy(＋), and positive affectivity(＋). 2) the following variables, listed in order of size, have significant effects on organizational commitment: met expectation(＋), work involvement(.＋), distributive justice(＋), job security(＋), role variety(＋), positive affectivity(＋), negative affectivity(－), resource inadequacy(＋), and tenure(－). 3) the variance of job satisfaction and organizational commitment explained by the variables used in the study are 30.0% and 39.1% respectively. 4) In comparison to the results of other studies on the determinants of job satisfaction and organizational commitment of clinical nursing staff working at hospitals, the results of this study indicate that three variables of distributive justice, work involvement, and role variety are especially important for improving the level of job satisfaction and organizational commitment of medical insurance review nurses.

• Asian Pacific Journal of Cancer Prevention
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• 제17권2호
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• pp.863-866
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• 2016

Background: Extensive efforts have been made to investigate c-KIT expression in lung cancer specimens and its correlation with clinical outcomes, but the issue remains unresolved. Thus, this study will be conducted to clarify the prognostic value of c-KIT expression in lung cancer patients. Materials and Methods: We will search Pubmed, SCOPUS, and ISI web of sciences with no restriction of language. Studies with any design (except case reports or case series) evaluating correlations of c-KIT expression with survival or outcome in patients with lung cancer will be included. The outcome measures will include all types of survival indexes, including overall survival rate and disease free survival using Kaplan-Meier analysis and hazard ratios. Study selection and data extraction will be performed by two independent researchers. Quality assessment (assessment of risk of bias) and data synthesis will be implemented using Stata software version 11.1. Results: No ethical issues are predicted. These findings will be published in a peer-reviewed journal and presented at national and international conferences. Conclusions: This systematic review protocol is registered in the PROSPERO International Prospective Register of Systematic Reviews, registration number = CRD42015023391.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2005년도 공동추계학술논문발표회 논문집
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• pp.201-207
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• 2005

• International Journal of Safety
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• 제10권2호
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• pp.27-31
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• 2011

As safety-related regulations for signaling systems are standardized to IEC 61508 and 62425, and others at the international level, safety activities and its verification are required. And also there is need to develop technologies for safety improvement to secure safety signaling systems in terms of technologies for safety activities on each life-cycle. In this paper it is reviewed the safety activity processes and technologies each steps of proposed processes respectively for railway signaling systems.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2000년도 춘계 학술발표회 논문집 Proceedings of EESK Conference-Spring
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• pp.97-104
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• 2000

Evaluating a Review-Level Ground Motion is a key to efficiently perform Seismic Margin Assessment of nuclear power plants whose purpose is to determine a ground motion level for which a plant has high-confidence-of-a-low-probability of seismic-induced core damage and to identify any weaker-link components. In this study a method to obtain RLGMs is reviewed which is recommended by Electric Power Research Institute and implemented to be applied to Limerick site in eastern and central U. S as a case study. This method provides reasonable and site-specific RLGMs as minimum required plant HCLPF for SMA that meet a target mean seismic core-damage frequency based on seismic hazard results and generic values of uncertainty and randomness parameters of the core-damage fragility curves. In addition high-frequency RLGM is justifiably modified to reflect the increased seismic capacity of high-frequency components and spatial variation and incoherence of input ground motion on a basemat of large structures by establishing a method to obtain high0-frequency reduction factors according to EPRI guidelines.

• International Journal of Quality Innovation
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• 제9권1호
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• pp.134-152
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• 2008

Almost every country around the world has been focusing on food safety in intense and multifaceted ways. The use of Hazard Analysis Critical Control Points (HACCP) is widely accepted as a food safety management system. This paper investigates the success factors of HACCP practices with reference to the domains of food production, processing and delivery. A literature review of food safety and management articles was conducted. Using the keywords search, the online Emerald Database was used and a total of 102 journal articles were identified between 1994 and 2007. The study examined a list of 20 success factors. Results show that 'food regulations,' 'role of the industry,' 'government policies and interventions,' 'training on food safety and hygiene,' and 'food contamination and/or poisoning' share the spotlight as being the most critical factors for HACCP practices in organisations. Future research could investigate a holistic paradigm that incorporates the success factors and aligns HACCP measures for attaining safety performance goals.

• 한국신뢰성학회:학술대회논문집
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• 한국신뢰성학회 2004년도 정기학술대회
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• pp.262-267
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• 2004

In designing and evaluating a new product, the company needs to give thought to the entire spectrum of produceability, usability, and ultimate reliability, as well as safety of users. For each design review(DR) stage, a formal, systematic, documented review and evaluation of a product design is conducted to assure that the product is safe and reliable, that costs and materials have been optimized, and that the design complies with its specifications and requirements. This paper presents how to improve development process for product's safety and reliability. The process requires gathering the appropriate information, determining the limits of the product, estimating risk associated with the task-hazard combinations, and reducing risk according to a prioritized procedure.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 1998년도 추계 학술발표회 논문집 Proceedings of EESK Conference-Spring 1998
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• pp.44-53
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• 1998

The objective of this paper is to review the current state of practice in the seismic codes in the U.S.A. and to investigate its trend in the development of performance-based seismic design for the 21st century. This study is supposed to be eventually utilized as a basis material to establish the new seismic code appropriate in our country having the moderate seismic hazard. To do this, the history of the seismic codes in U.S.A. is first briefly investigated and then the critical review on the recent codes is made. Finally, the conceptual framework of the performance-based seismic design and the development of the guideline documents to implement this to the rehabilitation of existing building structures are introduced.