• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.1262-1263
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• 2012

정보시스템감리와 회계감사에서 감리 및 감사의 적정성은 핵심적인 문제 가운데 하나이다. 본 논문에서는 정보시스템감리와 회계감사의 목적과 특징, 수행 절차를 살펴보고, 감리 및 감사의 적정성에 대한 판단기준을 비교하였다.

• 수도
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• s.46
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• pp.18-24
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• 1988

• 한국도로학회지:도로
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• v.9 no.2 s.32
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• pp.12-21
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• 2007

• Journal of the Korean Society for information Management
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• v.21 no.2
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• pp.1-21
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• 2004

For the guarantee of retrieval ratio, thesaurus's maintenance for descriptors are necessary. To maintain the optimum scale of thesaurus, new terms and existing terms should be structured to the equivalence relationship. Therefore, equivalence relationships are needed to new standard. This study proposes new standard of the equivalence relationships, which is more specified for better guarantee of retrieval ratios. The relationships have seven facets. These six facets will be used as new knowledge-base, which could be reestablished between the descriptors.

• Journal of Environmental Impact Assessment
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• v.23 no.4
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• pp.296-314
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• 2014

In recent years, Ministry of Environment (MOE) has been implementing a phased strengthening of the effluent standards for sewage treatment plants. In this regard, a comprehensive system should be developed to help check the appropriateness of such standards by specifying the grounds for standard-setting and investigating the current operation of sewage treatment plants clearly. It is necessary to establish a new standard-setting system for the effluent that is in a closer connection with the environmental criteria and rating systems. In the United States, the federal government provides guidelines on the least provisions and requirements for the Publicly Owned Treatment Works (POTWs). Local governments set the same or stricter guidelines that reflect the characteristics of each state. In Japan, the sewage treatment plants are subject to both the effluent standards and the discharge acceptable limits to pubic waters under the sewerage law. Specific requirements and limits are set in accordance with local government regulations. The European Union imposes sewage treatment plants with different provisions for effluent standards, depending on the sensitivity of public waters to eutrophication. The effluent standards for sewage treatment plants are classified by pollutant loads discharged to receiving waters. MOE also needs to introduce systems for setting new parameter standards on a POTW effluent by applying statistical means and treatment efficiencies or optimal treatment techniques, as seen in the cases of the US National Pollutant Discharge Elimination System (NPDES) or the EU Integrated Pollution Prevention and Control (IPPC).

• Journal of the Korea Organic Resources Recycling Association
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• v.2 no.1
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• pp.75-86
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• 1994

Garbage composting was studied in a controlled batch reactor with the addition of cooked rice as a biodegradable carbon source to find the effect of C/N ratio control on composting. And composting of bulking agents such as sawdust and wheat straw were tested with the addition of ammonium sulfate as a nitrogen source. As expected, biodegradation of the garbage having low C/N ratio was improved to some extent when foreign carbon was added. But bulking agents used in this study exerted slightly biodegradable carbon potential, indicating that the estimation of the dose of additional carbon considering desirable C/N ratio was not reasonable when lignocellulosic bulking material was added to garbage. It was found that the optimum moisture content increased with sawdust addition meaning the C/N ratio increment. Considering the above results, it was suggested that 78g sawdust per 100g garbage should be mixed to make C/N ratio to 25 and moisture content to 56% for effective composting of the garbage studied in this paper.

• Journal of the Korea Organic Resources Recycling Association
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• v.27 no.3
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• pp.41-48
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• 2019

Mixed expeller cake has been one of soil management to improve crop productivity and soil fertility. But, there was a little information on optimum mixed expeller cake application for chinese cabbage. So, in this study, we were evaluated the preplant optimum application rate of mixed expeller cake(MEC) in chinese cabbage cultivation at field. Treatments consist of control, inorganic fertilizer($N-P_2O_5-K_2O$ : $320-78-198kg\;ha^{-1}$), MEC(50, 100, 150% on preplant application standard $110kg\;ha^{-1}$ as N, topdressing : $210kg\;ha^{-1}$ as N). In results, growth characteristics was not significantly different. But, yield was increased when application rate was increased. And MEC 150% treatment showed similar yield as inorganic treatment. There was no significant difference in soil pH, OM, $Av.P_2O_5$, $NH_4-N$ and Ex.K. But, soil EC and $NO_3-N$ were increased when MEC level increased. As a results, MEC 150% can be proposed as preplant optimum application rate of MEC from this study. But abuse of MEC and long-term using caused about salt accumulation in soil.

• Water for future
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• v.29 no.4
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• pp.131-138
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• 1996

The objective of this study is to develop an optimal operation model for the sewage treatment plants using nonlinear programming (NLP) technique and the QUAL2E model. The model finds the minimum-cost operation of sewage treatment plants while satisfying all design constraints and water quality (BOD) standard. The model is applied to four sewage treatment plants in Han River for the city of Seoul. It has been found that optimal operation schedule for the sewage treatment plants can be computed and it is more economic to operate the plants according to the schedule which satisfies the water quality constraints in the river. In addition, the water quality in the river can be predicted using the model under the treatment policy.

• Fire Science and Engineering
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• v.16 no.3
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• pp.48-55
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• 2002

This study presents a treatment of suitable flame retardant through evaluating fire performance after treating flame retardant of fibers for development of welding blanket. The experimental samples used were commercial fibers and we are treated fibers with the flame retardant liquid and the flame retardant paint. The fire performance of the sample was carried out according to the Korea and Japan Standard. As the results of the fire performance experiment, the treated fiber in samples had enough in the performance of flame and fire retardant and the grade of their was from grade A to grade C according to flame and fire retardant standard. The lower oxygen index indicated that all treated samples with the resist are satisfied with international standard. We con-sider that the welding blanket treated with grade A, B and C performance prevents fire spread regardless of the height of work stairs in the case of installation horizontally. Also, it is considered that the welding blanket treated with grade C performance prevents fire spread regardless of the height of work stairs in the case of installation vertically.

• Journal of Environmental Impact Assessment
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• v.21 no.6
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• pp.951-964
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• 2012

네팔 지방자치단체의 고형폐기물 관리 부서는 도시계획 및 개발국이나 환경위생 부서 또는 일반 복지 부서에서 담당한다. 네팔에는 폐기물관련법과 기준, 지침이 제정되어 있으며 지방자치단체법에 의해 지방자치단체 여건에 맞게 관련 법률 조항을 개정할 수 있다. 네팔에서 발생하는 가정폐기물의 65%는 유기성 폐기물이나, 폐기물 관리는 아직 체계화되지 않고 있다. 지방 NGOs와 일부 부락이 분리수거와 퇴비화를 실시하고 있으나 병원폐기물과 같은 유해폐기물의 경우 병원이 자체적으로 소각하고 있으며 지방자치단체의 의해 적절히 처리되지 않고 있다. 현재 네팔에서는 폐기물이 비위생 매립 방식에 의해 처리되고 있어서 지방자치단체에서 이를 금지하고 위생매립지를 확대 설치할 계획이다. 그럼에도 불구하고 기술 및 전문인력, 예산의 부족, 민간자본 및 시민들의 참여 부족으로 인해 지방자치단체가 설정한 폐기물관리 목표를 달성하지 못하고 있는 실정이다. 네팔 지방자치단체들이 당면한 시급한 과제는 지속가능한 폐기물관리 계획 및 전략의 수립이다. 네팔 지방자치단체의 폐기물관리 계획은 폐기물의 적정 처리를 위한 제도적 측면의 강화는 물론, 폐기물 분리 배출 및 수거에 시민들의 동참을 이끌어내고 이해관계자의 참여 확대, 폐기물 처리 비용, 폐기물 처리를 위한 적정기술의 개발과 같은 내용을 포괄할 수 있어야 한다.