• Journal of the Korea Organic Resources Recycling Association
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• v.4 no.1
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• pp.43-51
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• 1996

Qualititative changes in water extracts during food waste composting were studied in order to identify parameters that can be used as indicaters of compost maturity. Materials used in this study were food wastes, office paper, newspaper and leaves. Three different compositions of food wastes were used : average composition food waste generated in Korea, a high cereal (carbohydrate) content food waste and a high meat (protein) content food waste. Experimental results indicated that parameters which can be used for compost maturity evaluation were water soluble TOC and water soluble $C_{org}/N_{org}$ ratio. In case of water soluble TOC, it is considered as one of the most desirable parameters, since it showed quite distinct decrease pattern than any other parameters. The $C_{org}/N_{org}$ ratio in the water extracts can also be considered as a appropriate index of the compost maturity since this ratio reached a narrow range (5~6) at the end of composting process regardless of initial raw waste compositions. Water soluble TKN was undesirable parameter as a compost maturity index. The ammonia nitrogen content in water extracts varied considerably during composting process, but finally reached a range of 0.067, 0.085% based on dry compost.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.10a
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• pp.279-283
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• 2009

Distributed generation(DG) of combined cooling, heat. and power(CCHP)has been gaining momentum in recent year as efficient, secure alternative for meeting increasing energy demands. This paper presents the energy performance of microturbine CCHP system equipped with an absorption chiller by modelling it in hospital building. The orders of study were as following. 1)The list and schedule of energy consumption equipment in hospital were examined such as heating and cooling machine, light etc. 2) Annual report of energy usage and monitoring data were examined as heating, cooling, DHW, lighting, etc. 3) The weather data in 2007 was used for simulation and was arranged by meteorological office data in Daejeon. 4) Reference simulation model was built by comparison of real energy consumption and simulation result by TRNSYS and ESP-r. The energy consumption pattern of building were analyzed by simulation model and energy reduction rate were calculated over the cogeneration. As a result of this study, power generation efficiency of turbine was about 30% after installing micro gas turbine and lighting energy as well as total electricity consumption can be reduced by 40%. If electricity energy and waste heat in turbine are used, 56% of heating energy and 67% of cooling energy can be reduced respectively, and total system efficiency can be increased up to 70%.

• Journal of agricultural medicine and community health
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• v.21 no.1
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• pp.97-105
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• 1996

This study conducted to determine the evaluation and improvement for enforcement of the waste recycling system in Pohang city and surveyed 4 areas at the southern and northern districts respectively by a team of two officials during the period 6 February 7 February 1995. The rates of the use for waste recycling system's envelope from home trash were 94.2% at the northern district and 92.8% at the southern district by areas, 95.6% at the group houses (apartments and tenement houses) and 91.3% at the separate houses by patterns of house, the low economic class 96.4%, the middle economic class 96.3% and the upper economic class 87.5% by the economic levels, and the bell method 96.5%, the container method 95.6%, door take method 86.1% in order, respectively. The trash from houses were garbage 57.4%, paper 18.7%, plastic 10.3%, fiber 7.9%, bottle 2.7%, metal and can 1.4%, and wood and rubber 0.7% in order. The rates of the reuse trash(reuse possible paper, plastic, bottle, can and metal) were 20.2% of the total, 21.8% at the southern district and 18.5% at the northern district by areas, 25.7% at the separate houses and 14.7% at the group houses(apartments and tenement houses) by patterns of house, and the door take method 34.3%, the bell take method 17.1% and the container take method 14.7% in order, respectively. There were the double envelopes of the plastic bag from stories 46.3% and the clear plastic bag 29.5% in the waste cycling system's envelopes. There were 1.9 double envelopes in the waste cycling system's envelopes. Garbage occupied more than half of the total trash, so it is need to be compost and provender.

• Journal of Korean Society of Transportation
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• v.21 no.5
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• pp.73-81
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• 2003

The Government presented improvement plans such as "Traffic Accident Frequent Point" and "Hazardous Roads" to reduce traffic accidents on the increase after 1980s. In case of the hazardous roads, they are expressed by grades which are marked by geometric elements such as width, radius, grade. sight distance. and other environmental factors. As each business for improving roads goes by only focusing on improvement of geometric elements, excessive expense can be invested too much nowadays causing economical waste. Therefore, as improvement plans approached by economic access are needed, this paper shows the cost-effective improvement of the business to keep safety related to traffic accident and economical waste. The hazardous roads which authorized by Gwang-ju National Road Preservation Office of Construction and Transportation Ministry in 1995 for business for improvement of roads, were investigated before 1999. First of all, estimating traffic accident models are presented by using existed data statistically. The models help to maximize traffic accident decrease through control of the presented factor. Secondly, optimum construction cost of improvement is presented to prevent overcapitalization. However, this paper is limited because it was difficult to sort the data with various areas and to approach various ways.

• Journal of the Korean Institute of Landscape Architecture
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• v.34 no.2 s.115
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• pp.113-127
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• 2006

As the local self-government are stabilized and the environmental value is becoming more important among local residents, the occurrence of the anti-movements against waste treatment facilities is getting more frequent. Opposing to build the reuse facilities of wastes takes place because of concerning of health and hygiene, as well as matters of unclear policy making process. However, these facilities must be built in somewhere for the convenience and profit of the public. The NIMBY phenomenon against reuse facilities of wastes could be a burden for the city operation system, and it could worsen citizens' quality of life in the long run. In these lights, reuse and recycling facilities of wastes in East region are necessary facilities improving citizens' quality of life and enhancing the growth of cities in the region. However, there have been concerning of deforestation during the construction process of the facilities. The landscape design presented here for these facilities considers the features of the environmental ecosystem and tries to establish a plan to preserve the natural environment of the City of Ichon. This paper presents methods minimizing adverse effects of the facilities on the existing environments and promoting the city image with integrating culture, tourism, landscape and environment of the city. The landscape design makes efforts to harmonize natural environments in the site, human activities and culture. Well-being park was aimed to lead healthy and energetic outdoor activities of local residents. Ecological park was aimed to enhance the ecological functions of the forests and restore the valley ecology. Culture park was aimed to capture the city identity by creating a place that contains all the variety of meanings of the City of Ichon.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.12
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• pp.176-183
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• 2009

Distributed generation(DG) of combined cooling, heat, and power(CCHP)has been gaining momentum in recent year as efficient, secure alternative for meeting increasing energy demands. This paper presents the energy performance of microturbine CCHP system equipped with an absorption chiller by modelling it in hospital building. The orders of study were as following. 1)The list and schedule of energy consumption equipment in hospital were examined such as heating and cooling machine, light etc. 2) Annual report of energy usage and monitoring data were examined as heating, cooling, DHW, lighting, etc. 3) The weather data in 2007 was used for simulation and was arranged by meteorological office data in Daejeon. 4) Reference simulation model was built by comparison of real energy consumption and simulation result by TRNSYS and ESP-r. The energy consumption pattern of building were analyzed by simulation model and energy reduction rate were calculated over the cogeneration. As a result of this study, power generation efficiency of turbine was about 30[%] after installing micro gas turbine and lighting energy as well as total electricity consumption can be reduced by 40[%]. If electricity energy and waste heat in turbine are used, 56[%] of heating energy and 67[%] of cooling energy can be reduced respectively, and total system efficiency can be increased up to 70[%].

• The Journal of the Convergence on Culture Technology
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• v.9 no.5
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• pp.721-727
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• 2023

To prevent corruption, waste, and abuse in national governance, audit agencies are established and granted significant authority and responsibilities, including ensuring their independence. However, questions have been raised about who oversees these agencies and addresses issues or misconduct that may arise within them. In the United States, to address this oversight concern, the Inspector General Act was enacted, creating an audit community called the Inspector General Community. This community comprises various audit agencies and promotes compliance with standards and investigates potential wrongdoing by audit personnel. It fosters a culture of independence and collaboration among diverse stakeholders, such as Congress, the President, the Government Accountability Office, and agency leadership. In light of this successful approach in the United States, this research seeks to study and apply similar oversight mechanisms to audit agencies in South Korea. There is a need to develop the relationship between oversight bodies and parliament in terms of improving the efficiency and effectiveness of government operations. Accordingly, this paper studies this American case and presents efficient policy measures for the supervisory system to be applied to Korea's audit organizations. It aims to identify policy insights for effective supervision, ensuring independence, and fostering a collaborative culture within our audit institutions. Therefore, domestic interest and research on this matter are essential to enhance our audit mechanisms and achieve efficient governance.

• Korean journal of applied entomology
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• v.22 no.2 s.55
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• pp.138-146
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• 1983

With the increase of pesticide consumption, not only pesticide handling population would grow greater but also the chances to be exposed to the pesticides would be also increased. Thus, safe use and handling of the pesticides are becoming more important and serious in these days. The pesticides are well known to most pepole, however there are very limited number of persons who have correct understanding of chamicals. Intoxication cases caused by pesticides have been reported very rarely through the mess media, even they were lack of scientific evidences. In this paper, problems related to pesticide manufacture, transportation, storage, sprays, and residues and their countermeasures were discussed in connection with public health and enviromental aspects. Acute intoxication cases by pesticide handling might be caused accidently either through manufacture, marketing, transportation, or spraying. Safety aspects of workers in manufacturing plants include not only exposure to toxic chemicals, but also posibilities of of explosion and brought about by pesticides and their diluents. The problems of water pollution by waste chemicals from the manufacturing factories were discussed. Packing and loading methods of pesticides for transportation are considered in safety scheme and discussions are given in association with traffic accidents. With regard to warehouse, the pesticide storage, location structure, keepers, and standing materials for emergency are concerned with safety aspects. Concerning the spraying of chemicals, there are some problems to be discussed about clothes, spray equipment, wind direction, spray period, and spray workers condition. After the spray, treatment of used containers, remainder of Pesticides, and spray tools are also discussed. For the dissolutions of problems on public health and environmental danger arising from pesticide residues, there are two legal sanctions; 'Pesticide Tolerances' and 'Pesticide Safe Use Standards'. These regulations are legally effective, however, some problems still remain in practices to implement the acts properly, because these provisions are followed by the far mers mostly. With these regards, most problems are concerned with various sectors and persons, affecting public health and environment from the producers to the end users and consumers. As a whole persons concerned with pesticides, every possible effort has to be assembled to protect hazards from the chemicals. For the foremost place, special training and education are required for managing groups; such as factory managers and agricultural extension workers who are responsible for training the factory workers and farmers. The education is the only way to solve the hazard problems caused by the pesticides.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.725-733
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• 2018

With urbanization projects involving trunk roads progressing, many simple interchanges, which separate passing traffic into the main traffic and access subtraffic, are being constructed to maximize the traffic capacity. Under the current Road Connection Rule, the access-prohibited section in an interchange is determined based on the access lane and limit distance in the complete interchange road, but separate criteria for the simple interchange are not defined. This may cause confusion in the Road Management Office's determination of the access-prohibited section in the simple interchange, or lead to the application of the criteria for the access-prohibited section in the complete interchange without considering the features of such interchange. This study conducted a comparative analysis of the domestic and overseas systems related to the installation of access section in trunk roads, such as general national roads. This paper presents a survey of the methods for applying the access-prohibited section in the interchange along with the actual cases and proposes improvement measures for a rational calculation of the access prohibited installation section in the simple interchange to minimize the downsides associated with the application of the extremely strict criteria. The proposed road connection rule improvement measures based on the consideration of the purpose of installing the simple interchange and on the consideration the features of the simple interchange are expected to prevent administration confusion by the field road management offices as well as the waste of unnecessary efforts and costs by petitioners so they can boost the service satisfaction for people and the administrative reliability.