• Journal of the Korean Society for Railway
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• v.13 no.3
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• pp.317-326
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• 2010

The purpose of this study is to depict statistically and exploratively the interrelationship among learning orientation, environmental turbulence, and performance in the railway public organizations. To attain this purpose, a questionnaire was provided based on literature survey, and 616 respondent's data received was tested for its validity and reliability. And then, simple and vertical regression analysis were performed. The main findings are as follows: First, learning orientation has a relatively positive effects on performance. Second, environmental turbulence shows a partial moderating effects on the relationship between learning orientation and performance. These findings suggest that learning orientation do exist as an important organizational cultural dimension that contributes to the acquisition of sustainable competitive advantage, and some restrictive factors of public organizations seem to inevitably disrupt the intrinsic necessity of learning in the railway organizations.

• Proceedings of the KSR Conference
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• 2006.05b
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• pp.7-10
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• 2006

• Journal of the Society of Disaster Information
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• v.18 no.3
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• pp.589-599
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• 2022

Purpose: The purpose of this study is to quantitatively identify the environmental contribution generated by urban rail users in the metropolitan area. Method: As for the analysis method, the mode choice and assignment of the traffic demand analysis were repeatedly performed on the assumption that each line was not opened for the metropolitan urban railway lines 1 to 9. After that, the environmental contribution according to changes in demand for the road was analyzed. Result: The total amount of carbon dioxide emissions and benefits were found to be the largest for subway line 1. However, when considering the number of stations and length, it was analyzed that the environmental contribution was the greatest in Metro Line 4. Conclusion: Measures to promote the use of public transportation are representative of environmental improvement policies, but there is a limit in that it is difficult for actual users/non-users to feel it. Therefore, it is judged that it is necessary to quantitatively present the effect in order to improve and spread awareness of the environment.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1999.06a
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• pp.45-49
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• 1999

전기철도가 운행될 때 발생하는 전자계 환경문제에는 주변의 근거리 및 원거리 전자계 및 시스템 내외부에서 발생되는 과도성 이상 전압 등이 포함되는 태 이들은 다른 전기 기기나 인체 영향을 미치게 된다. 이중 특히 철도 내부 및 외부의 통신이나 제어기기에의 영향은 열차의 안전성과 연결이 되어 중요한 사안이 된다. 이러한 문제외에도 우리나라 전력계통의 건설이 요즘 들어 많은 인원을 겪게 되는 것도 날로 증가하는 전자계 환경에 대한 민감한 관심 때문이라 하겠다. (중략)

• Journal of the Korean Society for Railway
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• v.3 no.4
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• pp.36-48
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• 2000

자동차 위주의 노면 교통수단은 인구가 밀집한 대도시의 도시 교통문제를 해결하는 데에 한계를 보여주고 있다. 결국 경쟁력 있는 대중 교통수단의 개발이 오늘날 심화되고 있는 도시 교통환경을 개선할 수 있는 적절한 해법으로 판명이 되고 있음을 부인할 수는 없을 것이다. 특히 새로운 기술개발이 접목되고 있는 도시철도는 대기오염이 없고 에너지 절약효과가 있는 환경친화적 도시 교통수단이며. 이른바 '지속가능한(Sustainable) 도시발전에 적합한 도시 교통수단으로서 크게 주목을 받고 있다고 하겠다. (중략)

• Journal of the Korean Society for Railway
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• v.6 no.3
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• pp.7-14
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• 2003

21세기의 사회적 환경변화는 크게 개도국의 인구증가, 선진국 인구감소, 인구의 노령화(2025년 전세계 인구의 20%가 65세 이상)와 연관된 인구통계의 변화와 경제발전으로 인한 세계화, 도시화(현재 전세계 인구의 45%가 도시지역에 생활하고 있으나, 2025년에는 60%로 증가) 등의 문제가 나타날 것으로 예측되며, 이로 인해 유동인구 및 물동량의 증가로 수송시스템에 대한 수요가 급격하게 증가할 것으로 예상된다. 특히 철도는 안전성, 정시성, 환경친화성, 대량수송성, 경제성 등에 장점을 바탕으로 국가교통의 핵심수단으로 확대되고 있다. 그러나, 미래사회는 각종 재해, 테러 등 다양한 위험원의 증가에 노출되면서, 안전에 대한 사회적 요구도 또한 증대될 것이다. (중략)

• Journal of the Korean Society for Railway
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• v.15 no.6
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• pp.662-669
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• 2012

In 2004, KTX operated in Korea on the 5th in the world. But there are various factor on planed schedule delay of Big National Construction Project like Seoul-Busan High Speed Rail Project(Seoul-Busan HSR). For example, Often change of government policy, project management control problem of design and construction, conflict of interested party like environmental organization/resident are the main delay factors. The suggestions for improvement of the construction schedule through the Seoul-Busan HSR will help to make a new leap forward in rail construction.

• Railway Journal
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• v.12 no.6
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• pp.57-66
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• 2009

• Railway Journal
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• v.15 no.3
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• pp.46-56
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• 2012

• Economic and Environmental Geology
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• v.46 no.1
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• pp.39-50
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• 2013

The study area is located on the western coastal region of Korea, partly had been reclaimed lands. Groundwaters of the coastal area show lower Eh and DO values (Eh: 0.57 V ${\rightarrow}$ 0.13 V, DO; 9.7 mg/l ${\rightarrow}$ 1.3 mg/l), and higher Fe concentrations (> 20 mg/l) than those of the inner land (< 0.3 mg/l), indicating that the redox condition of groundwater changes from oxic into suboxic/anoxic conditions as it flows from the inland toward the coastal area. In addition, Fe speciation of groundwater from the coastal area demonstrates that the most dissolved Fe exist as $Fe^{2+}$, reflecting that groundwater is under the anoxic condition to sufficiently occur Fe reduction. According to the result of Fe extraction with the sediment samples from three wells (A, B, C), the sediments provide enough $Fe^{3+}$ to occur the Fe reduction in the groundwater. Integrated all results of the groundwater and sediment, we infer that the Fe reduction to occur in groundwater is associated with the reclamation processes of the study area.