• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.143-143
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• 2019

우리나라 자연수역의 수질이 산업활동으로 배출된 오 폐수와 토지 및 가축에의한 하천오염의 심각성 및 보존에 대한 문제가 많은 관심을 받고 있다. 따라서 하천의 수질모델링에 관한 연구가 국내외적으로 진행되고 있다. 하천은 각기다른 특성을 가지고 있는데 데이터 분석을 통하여 유역특성을 연구하고자한다. 황강과 금호강은 낙동강 본류에 큰 영향을 미치는 지류이다. 두 개의 하천은 상류에 댐이 있다는 공통점이 있지만 각각의 유역특성을 가지고 있으며 특성에 따른 수질개선방안이 필요하다고 판단된다. 하천의 수질 모델링은 해당 수계의 오염부하량, 유출량 등 환경요인의 변화에 이에 따른 하천수질 목표지점의 수질변화를 모의함으로써 합리적 접근방법으로 효과적인 수질관리가 가능하도록 만들어준다. QUAL계열 모델 은 수질항목, 수역 특성, 기타 기초 자료의 제공여건 등을 고려하고 있다. 본 연구에서는 이러한 변화 요소와 기여 특성을 반영한 모의와 해석이 최적화된 QUAL-MEV 모델을 이용하였다. 수질개선방안 시나리오에서는 기존의 수질모델링 연구에 데이터 분석을 포함하여 각 인자간의 연관성 및 영향관계를 파악하고 수질개선방안에 있어 원인을 찾아보고자 한다. 부하량위주의 기존 시나리오 구성과 데이터분석 기반의 시나리오를 비교 분석하여 각 시나리오의 장 단점을 비교하여 유역맞춤형 관리방안을 모색하고자 한다.

• Journal of Korean Society of Environmental Engineers
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• v.33 no.8
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• pp.617-622
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• 2011

The policy of total maximum daily load (TMDL) was introduced to manage wasteload within the loading capacity to achieve water quality standards in the watershed. While the TMDL was implemented, the institutional and technical correction for the improvement of procedure was accomplished even though there were various problems and basically through the process of trial & error. However, a fundamental improvement of this policy is needed to implement the TMDL. This study has come up with a new viewpoint on improving this procedure for reasonable implementation of TMDL. First of all, the water quality and flowrate monitoring of the tributaries should be implemented. This should be done through the establishment of a monitoring system which will include standards of scope, a set time period, water quality parameters and frequency follow ups for the implementation of TMDL. The basic plan in all of the watersheds should be developed based on the establishment of water quality parameters and standards for water use and ecological purposes according to the results of the water quality and flowrate monitoring in the watersheds. The implementation plan for water quality improvement should be established in the watersheds where exceeds the targeted water quality standards. The performance assessment of TMDL should be conducted every year to meet the satisfaction assessment of water quality standards in the watersheds. Finally, if the water quality standards in the watersheds can not be attained or the water quality parameters and standards should be changed, the implementation procedure will be performed according to the iterative process. On the contrary, the policy of TMDL in the watersheds where the water quality standards have been met the goal will be finished.

• Journal of the Korea Institute of Building Construction
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• v.13 no.6
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• pp.585-593
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• 2013

For a successful construction project, systematic and objective decision-making is a prerequisite from the planning and designing stages. However, previous LCC analysis methods have focused only on simple cost savings and the accompanying economic efficacy while missing the environmental aspects of a structure. Although recently, a new approach of integrated $CO_2$ analysis has been introduced, which is more advanced than the existing simple LCC methods, it is difficult to collect all of the data necessary for each evaluation item since the product-specific cost is not presented under the LCC. In this research, cost evaluation items were selected by relatively high weights and items with heavy influence over a decision-making process in order to suggest an LCC-LCA integrated analysis model that is useful in comprehensively assessing the economic cost and environmental cost throughout the whole life cycle of a structure. The developed LCC-LCA integrated analysis model was applied to actual practices and compared with previous methods to test the model's effectiveness.

• Journal of Environmental Impact Assessment
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• v.26 no.4
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• pp.257-271
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• 2017

In Korea, soil is being transported in and taken out for the purpose of national land development, but the soil is being moved without consideration of soil contamination. Therefore, this is a policy-focused study of the management system on soil moving. In this study, we analyzed current state of domestic and foreign management and suggested three alternatives for management of soil moving in 1) self-regulation, 2) obligatory regulation, 3) phase-in according to types of regulation. In order to establish a clear and reasonable management system for soil movement in the future, it is necessary to improve the legal and institutional limitations of the current soil environmental law as suggested by this study.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.11
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• pp.130-137
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• 2017

To maintain traffic safety during the target lifetime of bridges, it is essential to secure an appropriate maintenance budget and allocate that budget appropriately. This paper proposes a reasonable budget allocation system that considers various impact factors to improve the conventional budget allocation method simply considering the bridge scale. The maintenance action rate model and the unit cost model based on the prior maintenance history were developed to allocate appropriately the bridge maintenance budget for the total bridges of the management organization with the target management level. A method to determine the optimal budget allocation ratio for each management subject was proposed and case analysis was conducted using the proposed model. Proper budget allocation was made considering the bridge types, current safety level, and service life as well as the bridge size as an impact factor of the budget allocation of the bridge. The developed method can prevent budget waste and provide a rational basis for budget allocation by implementing the rational budget distribution.

• Journal of the Korea Society of Computer and Information
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• v.15 no.5
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• pp.143-151
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• 2010

The purpose of this research paper is to provide to alternatives to improve the fiscal issue of current local government fund system of through empirical factor analysis. The method of this study is to survey residents and public officers. The meaning of local government fund system is to enhance the roll of local community effectually and to practice democratically and efficiently through continuing support to special project, But in general, Fund must be applied under certain restrictions in the field not to attain it's objects within budget accounting system, The reform of fund managemental application must to achieve before fixing an abuse out of fund system. According to this factor analysis, a strategic aspect to enhance the democracy and efficiency of fund system must be search actively.

• Journal of Korean Home Economics Education Association
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• v.24 no.2
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• pp.87-99
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• 2012

The purpose of this study is to investigate the relation among adolescents' school consumer education, cell phone consumption behavior and satisfaction with cell phone consumption life. Finally, this study aims to find right ways for leading to adolescents' reasonable consumption life and improving the school consumer education. A survey was conducted to the second grade students 430 of middle school residing in Seoul and the Capital area. As the result of examining the relation among school consumer education, consumption behavior, and consumption life satisfaction, the learning of 'information analysis and decision making process' has a positive effect on 'reasonable purchase and active problem-solving' behavior, and the learning of 'consumption culture' on 'active problem-solving and ethic use' behavior, the learning of 'problem-solving and rights and responsibilities' on 'ethic use' behavior. In addition, it shows that 'ethic usage behavior' in consumption behavior has a positive influence on 'relation satisfaction', and 'reasonable purchase' behavior and 'active problem-solving' behavior on 'practical usage satisfaction'.

• Journal of the Korea Institute of Building Construction
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• v.22 no.5
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• pp.497-506
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• 2022

In recent years, the specialized construction industry has undergone major construction and major industries, and without considering the technical expertise of construction works, the construction industry is promoting the integration and establishment of specialized construction industries according to convenience and abolition of their own industries. As the reorganization plan causes confusion in the production structure and lacks persuasive power by aiming only for industry simplification, it is judged to be desirable to review it according to the detailed characteristics of the specialized construction industry. In this study, -to review the reorganization of a rational classification system that considers the specific nature of the specialization of specialized construction projects, the classification of construction works, major work contents and characteristics, technical expertise, and problems of largescale industry in the case of painting construction and landscaping construction was analyzed. Based on this, aspects to be considered when reorganizing the current professional construction industry classification system are identified and reasonable improvement plans for each industry are suggested.

• Journal of Korean Society of Steel Construction
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• v.15 no.2
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• pp.187-196
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• 2003

Today, the Working Stress Rating (WSR) is being widely used for the capacity-rating and the safety assessment of railroad steel bridges. Since it cannot incorporate the uncertainties, several studies have been carried out in order to get over the incompleteness of the conventional capacity-rating and safety assessment. A system reliability-based equivalent capacity-rating method, which can evaluate the capacity of existing bridges, has been recently proposed. For more efficient reliability analysis, probabilistic parameters of the random variables in the limit-state models should be reasonably evaluated. Especially, uncertainties for live load effects must be realistically included. In this study, an improved limit-state model was used for the system reliability-based equivalent strength method. This model can incorporate the probabilistic parameters obtained from ambient measurement data. To demonstrate the applicability of the improved system reliability-based equivalent capacity rating method, this was applied to the existing steel plate girder bridge for comparison with the conventional capacity-rating and safety assessment.

• The Journal of the Korea Contents Association
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• v.14 no.4
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• pp.135-147
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• 2014

The wages of migrant workers about the rational discrimination and equal treatment have been treated partially. Foreign workers are also discussed in terms of the productivity and rational discrimination, but it is very limited. The Business community has been persisting that the minimum wage system for foreign workers should be excluded. Unlike local workers, migrant workers are relatively in that position with limited work place, a limited period of time to provide labor for the purpose of wage, in that points, the gap of the reality and the laws surrounding wages can be identified. This is expressed the conflicts and distress between employers and workers. Meanwhile, wages and equal treatment on the part of the study have been discussed, but it is hard to be organized clearly. Be related to this study, it will have a limitation. In this paper, since the employment permit system was enforced, the status of wages and distress and the factor of conflicts between the employer and the foreign worker examine and suggest the improvement plan for the law regarding wage.