• KSCE Journal of Civil and Environmental Engineering Research
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• v.34 no.6
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• pp.1837-1844
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• 2014

The study of safety culture estimate has received a wide attentions in many other industries, rather in the contexture of railroad stands at an initial phase. A factor analysis and internal reliability test were conducted to check if the survey results are reliable by looking at how the factors are dimensioned and how the questionnaires are sub-grouped in accordance with such factors, and further if there are any other common attributes being extracted as a new factor. The designed 5 factors were expanded to 7 through the test, and they were renamed accordingly. The questionnaires are reorganized according to the new 7 factors. It implicates that thorough investigation of the common attributes is important in reducing the gaps between interviewers' and interviewees' understanding. Moreover, the results of internal reliability test represent the new design of questionnaire is reasonably acceptable with the high reliable values. We expect such approaches can be applied for the railway culture survey study to be more reliable and applicable.

• 레미콘
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• no.3 s.7
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• pp.65-67
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• 1986

국제원유가의 급락은 86년초 드디어 배럴당 15$선까지 떨어졌다. 유가하락은 우리나라 경제에 직ㆍ간접적으로 지대한 영향을 미칠 것으로 예상되고 있다. 특히 국제금리하락, 엔고 등과 함께 국민경제 측면에서 플러스 요인으로 크게 작용한다는 것이 전문가들의 공통적 견해이다. 다음은 산업연구원에서 분석한 자료이다.

• Fire Science and Engineering
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• v.17 no.4
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• pp.76-85
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• 2003

In this study, we write down the definitions, their causes and the techniques of analysis as a theoretical consideration of common cause failures, and investigate the limitation and the importance of the common cause failures by applying to the analysis on the fire protection as a representative safety facility. As you can know in the reliability analysis, most impressive cause is the malfunctions of pumping operations; especially the common cause failure of two pumps is dominant. In other words, it is possible to assess system-reliability as twice as actual without CCF From these, CCF is extraordinarily important and the results are highly dependent on the CCF factor. And although it would increase with multiple installations, the reliability are not defined as linear with those multiplications. In addition, the differences in results due to the models for analysis are not significant, whereas the various sources of data produce highly different results. Therefore, we conclude that the reliabilities are dependent on the quality of the usable data much better than the variety of models. As a result, the basic and engineering device for the preventions of CCF of the multiple facilities is to design it as reliably as to design the fire-water pump. That is to say, we must assess those reliabilities using PFD whether they are appropriate to SIL (Safety Integrity Level) which is required for the reliability in SIS (Safety Instrumented System). The result of the analysis on the reliability of the fire-water supply with CCF shows that PFD is 3.80E-3, so that it cannot be said to be designed as safely as in the level of SIL5. However, without CCF, PFD is 1.82E-3 which means that they are designed as unsafely as before.

• Journal of Agricultural Extension & Community Development
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• v.19 no.4
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• pp.773-798
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• 2012

The study present the findings divide into brand naming, image, positioning. The farms built trust by consumer relationship with the farm brand. The results of the study provide insights for agricultural marketers who intend to design brand stories that align with their produce. This study is a regional case study of the factor analysis which explain residents' satisfaction of the efficient rural development projects under the Block Grants System in Buyeo. This study attempted to proceed the empirical survey of 353 residents who live in one 'town(eup)' and 13 'village(meon)' in Buyeo-gun and analyzed through SPSSWIN. The results of the satisfaction analysis in the local development projects satisfied with the overall average 3.16 and then empirically verified the important factors of the 'cultural and leisure activities', 'learning environment', 'jobs and working conditions', 'transportation'. The factor analysis of 12 variables united into three factors, the first Factors are 'transportation', 'learning environment', 'social welfare', 'cultural and leisure activities', 'Information and Communication', 'Health and Medical Services'. The second factors are 'crimes and accidents', 'environmental management', 'neighbor relations and social participation', and the third factors united into 'income and consumption activities', 'job creation' which imply the economic variables, and 'residential environment' as the common category.

• Journal of the Korean Data and Information Science Society
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• v.26 no.2
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• pp.323-334
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• 2015

he current VaR model based on the J.P. Morgan's RiskMetrics structurally can not reflect the future economic situation. In this study, we propose a One-factor model resulting from the Wiener stochastic process decomposed into a systematic risk factor and an idiosyncratic risk factor. Therefore, we are able to perform a preemptive risk management by means of reflecting the predicted common risk factors in the model. Stocks in the portfolio are satisfied with the independence to each other because the common factors are fixed by the predicted value. Therefore, we can easily determine the investment in each stock to minimize the variance of the portfolio. In addition, the portfolio VaR is decomposed into the sum of the individual VaR. So we can effectively implement the constitution of the portfolio to meet the target maximum losses.

• Korean Journal of Labor Studies
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• v.17 no.1
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• pp.209-242
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• 2011

본 연구는 현대하이스코 순천공장과 포스코 광양제철소에서의 비정규직 조직화 비교를 통해 사내하청 노동조합의 조직화에 영향을 미치는 작업장 요인과 지역사회 요인들을 살펴보고자 하였다. 기존의 비정규직 노동자 조직화를 비롯한 노동운동, 노동조합 관련 연구들은 대부분 '생산의 정치'의 영역에서 비롯된 '작업장' 요인들에 초점을 맞추고 있다. 그러나 비정규직 노동자 조직화에 대한 보다 분석을 보다 발전시키기 위해서는 작업장뿐만 아니라 '스케일의 정치'가 작동하는 공간인 '지역사회' 또한 분석의 단위로 통합되어야 한다. 따라서 본 연구는 작업장에서의 정규직 및 비정규직 노동자들에 대한 관리통제와 실천뿐만 아니라, 지역사회의 다양한 요인들이 비정규직 노동자들의 조직화 시도에 어떠한 영향을 미치는지를 검토하고자 한다. 두 사례에서 사내하청 노동자들은 철강산업이라는 산업부문과 사내하청 고용형태에 속한다는 공통점 외에도 낮은 수준의 임금과 노동조건하에서 강한 불만을 지니고 있었으며, 원청 및 사내하청 업체의 강한 통제하에 놓여 있었다는 공통점을 지닌다. 그럼에도 포스코의 경우와 달리 현대하이스코 비정규직 노동자들은 격렬한 대중투쟁과 지역사회의 지원 속에서 성공적인 조직화를 이룰 수 있었다. 사내하청 노동조합 결성 과정 또한 상이하였다. 현대하이스코의 경우 누적된 사내하청노동자들의 불만이 계약해지를 계기로 일순간 터져 나오면서 작업장 점거농성을 비롯한 대중투쟁과 결합하였다. 나아가 현대하이스코 비정규직지회는 지역사회운동과의 연대를 통해 작업장의 문제를 전체 비정규직 노동문제로 확대해 나갔다. 반면, 포스코의 경우 초기 조직화의 범위가 제한적이었고 대중투쟁 또한 강하게 나타나지 않았으며 지역사회의 관심과 지원 또한 약하게 나타났다. 이상과 같이 두 사례를 비교 검토함으로써 비정규직의 조직화에 있어 비정규직 자체 동원기제와 정규직의 지원은 여전히 중요하게 작용하지만, 이것이 확보되지 않을 경우 지역사회를 비롯한 외부의 지원이 일정하게 작용함을 살펴볼 수 있었다. 그러나 이 역시 지역사회구조 및 지역사회운동의 성격에 영향을 받는 것으로 나타났다.

• Journal of the Korean Society of Child Welfare
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• no.54
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• pp.173-197
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• 2016

This study aims to examine developmental trajectories and predictor variables of problem behaviors and school adjustment trajectories among children from low-income families using latent growth modeling. The data was collected from the 2nd year to the 4th year (2012-2014) of a community child center child panel survey conducted by the National Youth Policy Institute. The major findings are as follows. First, as the grade went up, the problem behaviors of children from low-income families increased while school adjustment decreased. Second, multi-level domains, such as individual, school, and family variables influenced school adjustment trajectory, while only individual variables, such as depression, isolation, and motivation for achievement influenced problem behavior trajectory. Third, common protective factors between problem behaviors and school adjustment trajectories were motivation for achievement in and satisfaction of the community child center. Common risk factors between problem behaviors and school adjustment trajectories were isolation and aggression. Based on the results, the implications for child welfare practices were discussed.

• Archives of design research
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• v.19 no.1 s.63
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• pp.283-292
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• 2006

This study developed 'Design Career Aptitude Scale' to help design majoring college students who are seeking their career goals or conflicting to decide their majors. The subscales of the 'Design Career Aptitude Scale' are 'basic job competency', 'basic design competency' and' advanced design competency'. This study further classified the 'basic job competency' and 'basic design competency' into several subareas and defined each concepts. Based upon the classification of each subareas, tentative test items were developed through the verification of validity three times by seven design professionals. A pilot study of the developed scale was administered to 506 design majoring college students. The results by exploratory factor analysis were that the basic job competency was composed of four factors; ability of interpersonal relations, goal-driven ability, problem solving ability and self-developing ability. The basic design competency was composed of five factor, grounding in design, computer skills, material sensitivity, formative ability and color sensitivity. The results can be seen as an adequate, delicate factor structure to represent design aptitude, and also the scale can be a useful tool to the students who are conflicting to decide their majors and careers. The further study needed to validate the scale through the investigation of the relationship with related scales measuring designing ability, and with other criteria-referenced group.

• Journal of the Korean Home Economics Association
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• v.42 no.1
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• pp.115-132
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• 2004

본 연구는 아동의 일상 심리학이 그들의 문화에 따라 다르게 나타나는지를 알아보고자 한 것이다. 이러한 발달적 보편성의 문제를 해결하기 위해, 우선 한국 아동과 미국 아동의 타인 행동에 대한 설명을 비교하였다. 또한 서로 다른 문화를 반영할 수 있는 분석 틀을 고안하여. 이러한 서로 다른 분석 틀에 따라 두 나라 아동의 행동설명이 어떻게 다르게 나타나는지를 비교하였다. 본 연구에서는 미국식 범주인 '내적-외적' 법주와 한국식 범주인 '개인-관계-상황' 범주를 사용하였다. 연구결과. 두 나라의 아동은 타인의 행동설명에서 차이를 보여주었다. 미국 아동은 한국 아동에 비해 심리 '내적' 요인과 '개인적' 요인을 더 많이 사용하였으며. 한국 아동은 타인의 '상황적' 조건을 더 많이 고려하여 행동을 설명하였다. 그러나 두 문화권의 아동은 행동설명 과제에서 모두 '내적' 요인과 '개인적' 요인을 다른 요인보다 더 많이 선호하였으며. 오직 '상황적' 요인의 고려에서만 발달적 차이를 나타내는 공통점을 보여주었다.

• The Korean Journal of Financial Management
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• v.14 no.2
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• pp.21-55
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• 1997

본 연구는 기업규모, 장부가치/시장가치 비율, 순이익/주가 비율, 현금흐름/주가 비율, 레버리지 등 기본적 변수를 사용하여 주식수익률에 유의적인 변수를 확인하고, 또한 Fama and French(1993) 등에 의해서 제시된 다요인모형(multi-factor model)이 한국주식시장에서 적용가능한 지를 살펴보았다. 이를 위하여 본 연구에서는 Fama and MacBeth(1973)의 횡단면회귀모형과 Black, Jensen, and Scholes (1972)의 시계열모형을 사용하였으며, 실증분석결과를 요약하면 다음과 같다. 먼저 횡단면분석결과에 의하면, 장부가치/시장가치 비율(BE/ME), 현금흐름/주가 비율(C/P) 등이 주식수익률의 횡단면적 차이를 설명할 수 있는 유의적인 변수로 나타났다. 그리고 통계적 의미에서는 1월효과가 존재한다고 보기 어려우나, 경제적 의미에서 1월효과가 존재하는 것으로 생각된다. 시계열분석결과에 의하면, 시장요인, 기업규모요인, 장부가치/시장가치요인(또는 현금흐름/주가요인) 등의 3요인에 의해서 국내 주식수익률의 공통적 변동을 잘 설명할 수 있다. 즉 국내 증권시장에서도 Fama and French(1993)의 3요인모형이 성립될 수 있는 것으로 판단된다.