트랜시스 싱글 존 모델을 이용한 멀티 존 에너지 해석 방법

전병기(Jeon, Byung?Ki),김의종(Kim, Eui-Jong) 한국건축친환경설비학회 2016 한국건축친환경설비학회 논문집 Vol.10 No.5

The purpose of this work is to propose a simple single-zone model for analyzing multi-zone cases. Multi-zone models can be defined directly describing the building plan while important simulation data and careful parameterization are required. In contrast, the single-zone model is set in a very simplified manner, so many engineering projects prefer such a model. However, differences between the two models are not yet well investigated, particularly in a quantitative way, and thus the paper tests the differences and proposes possible methodologies to enhance the single-zone model to be closer to the multi-zone model. Thus, the balcony is modeled in detail to account for the solar double transmitted irradiance via windows at both sides of the balcony. Since the solar transmitted irradiance directly influences building loads, a special attention is required. In addition, the internal walls are taken into account in the single-zone model to keep the similar thermal capacity of multi-zone cases. Results show that the proposed single-zone model predicts very similar annual loads with the reference multi-zone model (about 5% error) while the initial single-zone model without the methodologies is far from the reference model (more than 20% error).

이산화탄소 수소화 반응을 위한 촉매의 연구개발 현황

전종기,박영권,임선기 한국공업화학회 2003 공업화학 Vol.14 No.1

온실효과를 유발하는 이산화탄소는 매우 풍부한 탄소원이며 대기 중의 농도가 꾸준하게 증가하고 있다. 대기 중의 이산화탄소의 농도를 제어하기 위해서 이산화탄소를 화학반응을 통하여 유용한 화합물로 전환하는 기술이 집중적으로 연구되고 있다. 짧은 시간 내에 많은 양의 이산화탄소를 처리할 수 있다는 이점 때문에 이산화탄소의 수소화 반응이 가장 효과적인 공정으로 제안되고 있다. 금속/금속산화물 촉매 또는 금속/금속산화물과 제올라이트가 조합된 혼성촉매를 사용하여 이산화탄소와 수소로부터 함산소 화합물이나 탄화수소를 선택적으로 합성할 수 있다. 본 고에서는 메탄올, 파라핀, 올레핀, 디메틸에테르, 에탄올 등의 효율적인 합성을 위한 촉매의 최근 연구 및 개반 현황을 집중적으로 다루었다. Carbon dioxide, which causes greenhouse effect, is one of the most abundant carbon resources avaialble, and its concentration in the atmosphere has steadily increased. In order to control the concentration of carbon dioxide in the air, various kinds of technologies that transform carbon dioxide into useful products via chemical reactions have been studied intensively. Recently the catalytic hydrogenation of carbon dioxide has been proposed as one of the most effective processes because it can treat a large amount of carbon dioxide in a relatively short period of time. By using metal/metal oxide catalysts or hybrid catalysts composed of metal/metal oxide and zeolite, the selective synthesis of oxygenates or hydrocarbons from carbon dioxide and hydrogen was realized. In this review, recent researches and developments of catalysts for the effective synthesis of methanol, paraffin, olefin, dimethylether, ethanol and others are introduced.

C₄유분을 이용한 옥텐류의 합성에 있어서 1,3-Butadiene의 함량에 따른 이량화 촉매의 수명에 관한 연구

전종기,한원희,조정호,고승태,노상균 동양대학교 2001 동양대학교 논문집 Vol.7 No.1

Selective hydrogenation of 1,3-butadiene in C4 raffinate was carried out in fixed bed reactor using Pd/a1unina catalysts, Concentration of 1,3-butadiene in C4 raffinate could be reduced under 100 ppm.The life of dimerization catalyst using C4 raffinate after selective hydrogenation was longer than that of dimerization catalyst without selective hydrogenation.It was found that dilution of olefin concentration in feed was effective to increase dimerization catalyst life.

스포츠 웹사이트 광고추천 시스템 설계

전익기,김종경 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

The World Wide Web(www) continues to grow at an astounding rate in both the sheer volume of traffic and the size and complexity of Web site. This research is studying advertisement recommendation system to achieve eCRM's and sport web site's goal efficiently. Recent proposals have suggested Web usage mining as an mechanism enabling to overcome the problems connected with more traditional Web personalization techniques such as collaborative or content-based filtering. For this task in the paper, I present such a framework, distingushing between the offline tasks of data preparation and mining and the online process of customizing Web Pages based on a user's active session. I present a bidirectional personalization based on feature clustering and member classification. Users who visit sport web sites are composed of simple visitors and members. Simple visitors should have their member class based on demographical information. This researcher converts user's transaction into feature sets. This task is the most important one to search the association rules with support threshold among transactions. And features have a unique weighting within each cluster. If one user start to navigate the web site, the personalization system can recommend items, which are advertisements in this study, sorted by similarity between items and feature cluster. In the future, this way of research related to advertisements recommendation on sports web sites will need to study more sophsticated and accurate feature selection and weighting.

제올라이트 흡착제 상에서 이산화탄소 회수를 위한 PSA 공정 연구 : 공정성능에 대한 세정유량의 영향 Effect of Rinse Rate on Process Performance

전종기,박영권,주국택 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.1

In order to investigate the performance of carbon dioxide PSA over zeolite adsorbent, the present study showed results of isotherm measurement, cyclic operation of 3-bed apparatus, and the corresponding numerical simulation. The experiment data of bed temperature, purity, recovery were matched well with that of numerical simulation. Purity of both gas and adsorbent phase increased rapidly with rinse rate but the degree of increase was retarded for large rinse rate. The total amount of adsorbed increased only 10% even if rinse rate was enlarged to 4 times. Optimal rinse rate was 7 Nm³/hr in this study. The heating rinse led to augments in recovery and productivity, possibly thanks to ease of desorption resulting from increased volumetric rinse rate and temperature rise in the column.

고급산화기법을 이용한 수중의 BTXs 처리 특성

김전희,송민종,백순기 동신대학교 환경연구소 1999 환경연구 Vol.4 No.1

본 연구에서는 광산화공정의 실험으로 자외선과 산화제에 의한 BTXs의 제거특성을 파악하기 위하여 실험장치를 실험실규모로 제작하여, 광원의 세기, 산화제의 종류 및 주입량(오존 및 과산화수소) 둥을 변화시키면서 접촉시간에 따른 BTXs의 처리효율을 분석한 결과는 다음과 같다. UV 강도변화에 따른 BTXs의 제거특성은 UV, 강도가 증가함에 따라 광분해가 향상되었고,특히 UV 강도가 30W가 15W일 때 보다 7.9%의 상승효과를 보인 xylene이 제거가 잘되었다. UV/H202 공정에서 H2O2의 주입량이 200 mg/L일 때 제거효율이 약간 높은 효율을 보였으며, UV와 H2O2를 이용한 처리에서 xylene > toluene >benzene의 순으로 제거효율이 나타났고, UV/H202/03 공정에서 H202/03의 비가 2일 때 처리대상물질의 제거효율이 높은 것으로 나타났다, 특히 toluene의 제거효율은 H202/03의 비가 3일 경우에 91.5%로 처리가 잘되는 것으로 나타났다. Laboratory experiments were performed to investigate removal efficiency of BTXs in water for advanced oxidation processes. Parameters using experiment is change of UV intensity, oxidant(H₂0₂, 0₃). The conclusions are as follows. ; Effect of light intensity on the rate of BTXs removal was investigated by three type lamps within the reactor. When light intensity to inscrease, the BTXs removal efficiency to increase. And treatment of BTXs with light had an effect on xylenes. Consequently, simultaneous treatment of UV/H₂0₂/0₃ was more effective than individual treatment of 0₃, H₂0₂.

정보보안정책, 보안통제 및 사용자특성이 정보보안효과에 미치는 영향 : 컴퓨터 바이러스를 중심으로

김종기,전진환,임호섭 한국정보시스템학회 2006 情報시스템硏究 Vol.15 No.1

AO법에 있어서 혐기조 구성의 변화에 따른 인제거 양상

김전희,백순기,송민종 東新大學校 工業技術硏究所 1998 工業技術硏究 Vol.4 No.-

The Anaerobic-Oxic process is a modified activated sludge process that combines Anaerobic and Oxic section in sequence. This process has a merit which is the simultaneous removal of rrganic matter, nitrogen and phosphorus. The conclusions are as follows. ; The COD_(Cr) removal efficiency by the Anaerobic-Oxic process was 95.8%. Almost all of the COD_(Cr) was removed in an anaerobic tank. The COD_(Cr) removal rate by the Anaerobic-Oxic process was little better than that of standard activated sludge process(89.1%). The PO₄-P removal rate by the Anaerobic-Oxic process was 49.48% showing slightly higher dfficiency than that of standard activated sludge process(33.1%). It is considered that the Anaerobic-Oxic process is effective in 'the removal of phosphorus. It can be seen that phosphorus removal microbes in MLSS released phosphorus in anaerobic tank and phosphorus was up taken into sludge in aerobic phase.

한의진단명과 진단요건의 표준화 연구 II (표준화 실례) : 2차년도 연구결과 중간 보고

양기상,최선미,최승훈,안규석,박경모,박종현,김성우,신승호,정우열,전병훈,고현,김정범,신상우,김성훈,김동희,권영규,엄현섭,장혜옥 한국한의학연구원 1996 한국한의학연구원논문집 Vol.2 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the second year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows; - differential diagnosis according to condition of body fluid, differentiation of syndromes according to the state of qi and blood, differential diagnosis according to relative excessiveness or deficiency of yin and yang(氣血陰陽津液辨證) - differentiation of diseases according to pathological changes of the viscera and their interrelation - analyzing and differentiating of febrile diseases in accordance with the theory of the six channels(傷寒辨證) The individual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name(異名), notion of diagnosis pattern, index of differentiation of symptoms and signs(辨證指標), the main point of diagnosis, analysis of diagnosis pattern(證候分析), discrimination of diagnosis pattern(證候鑑別), a way of curing a diseases(治法), prescription(處方), herb in common use(常用藥物), diseases appearing the diagnosis pattern(常見疾病), documents(文獻調査). This study was carried out on the basis of the Chinese documents and references.

컴퓨터 바이러스 통제를 위한 보안행위의도 모형

김종기,전진환 한국정보사회진흥원 2006 정보화정책 Vol.13 No.3

사회전반에 걸쳐 정보화가 급속히 진행되면서 정보보안이 중요한 이슈로 대두되고 있다. 그 가운데 컴퓨터 바이러스는 정보시스템 사용자가 일상적으로 접하는 정보보안 문제이며, 조직 차원에서도 다루기 힘든 이슈이다. 본 연구는 컴퓨터 바이러스 통제를 위해 사용자의 보안행위의도를 형성하는 일련의 요인들을 연구모형으로 설정하였다. 특히, 보안행위 의도에 선행하는 주요요인인 위험인식에 대해서는 정보보안 위험분석 방법론에 기초하여 정보자산, 위협 및 취약성을 영향요인으로 설정하였다. 설문조사 결과에 따르면 사용자는 컴퓨터 바이러스의 위협이 강하고, 취약성이 높을수록 보안위험을 크게 인지하는 것으로 나타났다. 하지만 정보자산은 컴퓨터 바이러스의 위험을 인식하는데 영향을 미치지 않는 것으로 분석되었다. 컴퓨터 바이러스 통제에 대한 사용자의 보안태도는 위험인식, 사용자특성 및 보안정책으로부터 형성되며, 이러한 보안태도는 사용자가 적극적인 보안행위의도를 가질 수 있도록 상당한 영향을 미친다는 것을 확인하였다.