• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 B
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• pp.1117-1119
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• 2001

This paper describes the forward type pulse power supply using a Power-MOSFET in the view of commercialization. The principle of basic operating and the operating characteristics of the forward type pulse power supply are estimated by the switching frequency, coupling factor and duty ratio. It is shown that theoretical and experimental results are in good agreement by comparing simulation and experimental results when a lamp type ozonizer can be used as a load. Also, experimental results indicate that the discharge and ozone concentration characteristics of the manufactured pulse power supply is more improved compare to the conventional pulse power supply[5]. This proposed supply show that it can be practically used as a pulse power supply in various environment improvement facilities.

• 대한기계학회논문집A
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• 제29권7호
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• pp.1035-1041
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• 2005

Dynamic characteristics of CD/DVD deck fur vehicle are analyzed in this paper. Generally CD/DVD deck for vehicle is used from inferior environment with the vibration of the vehicle, shock of outside and so on. Therefore it must have the structure which is stabilized from the vibration to prevent read error. For this purpose, vibration characteristic of the deck for vehicle should be identified. To analyze characteristic of the deck system, we perform the signal analysis and modal testing using the EFT analyzer. Also we change the design factor degrading the performance of the deck system and verify the efficiency improvement using the acceleration measurement occurring to the sound discontinuation.

• 한국철도학회논문집
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• 제12권5호
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• pp.751-760
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• 2009

본 연구는 화물수송을 둘러싼 사회적 경제적 환경변화 속에서 철도물류의 활성화가 시대적 과제가 되고 있는 시점에서 철도로의 모달시프트가 기대되는 철도컨테이너수송에 주목하여 화주, 복합운송업체, 운영자를 대상으로 설문조사를 실시, 철도의 이용현황, 이용확대를 위한 개선사항, 환경문제에 대한 대응상황을 분석함으로써 철도물류서비스의 생산성 향상을 위한 개선방안, 나아가 국가정책과의 공동보조를 통한 철도화물수송으로의 모달시프트 가능성에 대하여 검토하였다.

• 조명전기설비학회논문지
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• 제28권12호
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• pp.55-64
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• 2014

This paper presents a case study to investigate the monthly calculation method of ISO 13790 applied for a office building. The energy performance analysis according to improvement of insulation and air permeability of windows in K office buildings is investigated by means of building energy efficiency rating tool ($ECO_2-OD$). The K building energy system is tested experimently by the measurement of PMV(predicted mean vote) for the control of indoor thermal environment and heat transmission coefficient of windows and interior walls respectively, before and after the example K office building is remodeled passively. Therefore, Internet based energy assessment program of energy efficiency rating of office building can be applied as a program for the annual energy requirement and for evaluation of energy savings from the experimental and simulation results.

• 한국군사과학기술학회지
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• 제13권6호
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• pp.1080-1090
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• 2010

A study for improvement of credibility on test & evaluation result of interoperability in battle management information system which focused in C4I systems is very essential in rapid change of battle field environment. Realization of effective operation process with integration of developed IT also core factor for reducing of operational response time such as information gathering from sensor to shooter, time for commander's decision making. Therefore, by required to meet of high technical T&E, meet of complex software's user requirement, long-term system development period, system integration ability's request by various linkage of systems, it is high a M&S dependency to optimal performance, interpoerability's guarantee. Especially credibility on test & evaluation using M&S is very important. This paper will propse a VV&A applied methods using other VV&A case to improve credibility of M&S on test & evaluation.

• 경영과정보연구
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• 제6권
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• pp.187-204
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• 2001

As a competition between a country and a company becomes fierce and the quality information, reliability and quality guarantee of a product are more emphasized, quality has become an important strategic task of a company. A company today has a strategic quality management system for quality improvement in order to perform such a strategic task. The content of this are as follows. Classify the types of quality strategy of our manufacturing companies when the necessity of a strategic quality management increases in order to adapt to a rapidly changing management environment and study the characteristics of a quality management activity factor of quality strategy. The content and meaning of this analysis are summarized as follows. Confirmed qualify management activity in which quality strategy could be used by analyzing the effects by tendency of a quality management activity factor by quality strategy. It was a product/service factor that a quality management activity factor contrasted most clearly by tendency of quality strategy. Also, it can be said that this study set the foundation of quality strategy of our manufacturing company in a methodological way because this can be used in developing the theory and model of quality management and in verifying them by confirming and embodying the main area for successful quality management through comparing and analyzing factors related with main areas of quality management.

• 교육녹색환경연구
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• 제12권3호
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• pp.58-67
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• 2013

This study is to analyze the satisfaction and the image evaluation of landscape elements in outdoor space by types of the university campus. The results are as follows. 1) Out of outdoor elements at university campus, planting area, resting area, access road, and water feature are recognized as major landscape elements. Among them, planting area and access roads are evaluated low in terms of satisfaction levels, therefore, improvement on these elements are required. 2) In outdoor space image evaluation, university campus has image such as 'simple', 'clear', and 'safe'. By scale of universities, both 'A' university, which is the biggest in terms of size of campus, and 'B' university, which has a medium sized campus, have a positive image. However, 'C' university, which is the smallest in terms of size of campus, has a passive and negative image. 3) 6 factors are extracted through Factor Analysis for image evaluation. All of the universities show positive image in the categories of 'clarity' and 'familiarity', however, 'B' university and 'C' university show negative image in the category of 'scale'. 4) In Correlation Analysis between landscape elements satisfaction level and image evaluation, it is showed that the group of landscape facility becomes a relation factor of overall image evaluation. As a result, the higher satisfaction level goes, the better image evaluation of overall outdoor space at university campus is.

• 한국물환경학회지
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• 제31권6호
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• pp.700-714
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• 2015

The characteristic of the water quality and pollutant discharge was analyzed at the units watershed of the total amount management in Han-river basin, and after classified in a similar area by multivariate statistical analysis, the main trend such as the water quality trend and pollutant discharge characteristic were analyzed. As a result of this study, the density of the pollutant at the unit watershed is not necessarily identified as discharge density, and the primary management watershed and targeted substances were analyzed depending on the operating status of the environmental infrastructure in watershed and the main pollution factor and discharge path per pollutants. As a result of cluster analysis, watersheds were classified into four groups according to discharge characteristics. It will be used when selecting target area of primary management that is appropriate to the characteristics of each river and establishing efficient water quality improvement plans.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 춘계 학술발표회
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• pp.1161-1170
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• 2009

The Roads in Gangwon Province generally was made on purpose to use the military road. In case of these roads, tremendous dangerous cut slopes do exist and its road linear shape was badly designed. In order to make up for this situation, the government has continuously established the new road or performed the public works such as the straight line of the curved road. Soksil 2 cut slope was made through the road improvement work. This has small surface failures and collapses. In spite of dry season, this slope are leaking lots of groundwater at the unbelievable point. So as to get curious phenomenon right, we performed a detailed field investigation, the geomorphological analysis, the stability analysis considering field characteristic and ultimately proposed the countermeasure to make sure stability of Sokil 2 cut slope.

• 한국가구학회지
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• 제21권1호
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• pp.40-53
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• 2010

The purpose of this study was verified the effect of analyzed emotional factors and compare with competed design proposals of G and D public exhibition to plan the public exhibition applied emotional marketing which strengthen the effect with touching the emotion. The results are first, public consumer preferred to experience 5 senses and gives a positive effect, second, preference according to factor of scene gives differences by ages, but various ages preferred to experience the factor of scene, third the result of analyze the relation between preference of scene and 3 groups of 5 senses, which is high, middle, and low preferred had significant relation, and fourth, public consumer preferred to several levels of exhibition than only one level, the space preferred was 'experiencing' space.