대학생들의 환경문제 의식에 관한조사

박기학,이종현,Park, Ki-Hark,Lee, Jong-Hyun 대한환경위생공학회 2007 대한환경위생공학회지 Vol.22 No.2

The purpose of this study was to evaluate the consciousness and behavior for environmental problems of university student and the necessity of schooling for environmental education. In order to achieve this purpose, a method of questionnaire was administered to total 1012 students selected from 5 universities in Suwon Si etc.. The results in questionnaire were as follows. Most students responded that living environmental education in middle and high school was helpful(70.4%) in practical living. And the most serious problem of living environmental pollution was water pollution(53.6%), air pollution(19.8%), waste material pollution(15.8%), food additives(7.9%), genetic modified organism(3.0%), respectively. And students obtained most knowledge of living environmental problems in internet(87.0%). Also most students responded that the main source and cause of water pollution and air pollution was industrial waste 63.4%, vehicles 61.5%, respectively. And level of environmental behaviors and consciousness of students distributed by major was science & engineering 2.13/4, etc. 2.08/4, art & athletics 1.6/4, liberal art 1.53/4, respectively. And also most respondents have recognition the necessity of schooling for environmental education.

기법을 활용한 서울시 VOCs 오염도평가에 관한 연구

박기학(Ki Hark Park),정용(Yong Chung),조성준(Sung Jun Cho) 한국환경영향평가학회 2001 환경영향평가 Vol.10 No.2

This study was conducted to investigate the practical using of Geographic Information System(GIS) technology which are computer-based systems that are used to store and manipulate geographic information on the air pollution control and management in the macro city. For this study 130 samples were corrected by passive sampler in Seoul (25 distincts) distributed by TM-coordinate during November in 1997 to January 1998, and analysed by GC/MSD for 16 VOCs e.g., toluene, benzene and display using Arc/view GIS(version 3.2, ESRI Inc, U.S.A) for windows. The most VOCs concentration distribution in November, 1997 was higher than that of January, 1998 except benzene and 1,1,2-trichroloethan, bromobenzene. And products of the distribution of VOCs concentration display using GIS technology was effective as well as other display methods(e.g., contouring method, pie or column chart, graduated symbols), especially in mapping and symbolization capabilities for spatial pollutant status evaluation were very effective than other display methods.

환경교육 전ㆍ후 학생들의 환경문제에 대한 태도와 인식변화에 관한 연구(Ⅱ)

박기학(Ki-Hark Park),이덕난(Duck-Nan Lee) 대한환경위생공학회 2007 대한환경위생공학회지 Vol.22 No.4

The research was conducted based on the 1012 cases questionnaire for the purpose of to evaluate the change effect of university student's consciousness and behavior before and after lecture on environmental problems. And this questionnaires were performed with self-administered by the university student who made a application for liberal arts related to environmental subjects. The results were as follows. According to the analysis results the most students responded that the most serious problem of environmental pollution before the lecture on environmental education was a genetic modified organism(3.64/4.00), but the most serious problem of environmental pollution was changed to the topic of water pollution(3.96/4.00) after the lecture on environmental problem. And also according to the analysis results dributed by gender were that boy students show a higher concerning(170%) than that of girl students(150%). The most good results obtained after lecture on environmental problem were water pollution(23.0%), air pollution(11.5%), waste material pollution(10.9%), food additives (10.0%), genetic modified organism(8.0%), endocrine disrupter(7.5%), respectively. And according to the analysis results distributed by a grade were that the concerning of a low grade(freshman, sophomore) were higher than that of a high grade(junior, senior) in the topic of water pollution, air pollution, waste material pollution. But there were high level of awareness on the topic of food additives, genetic modified organism, endocrine disrupter to the all students(freshman to senior). And according to the analysis results distributed by a major field of study were that students who major in art & athletics, liberal art and etc(public health) were show a deep concerning than that of science & engineering. Finally, the environmental education during the university class were effectively contribute to increase the awareness of the seriousness of environmental pollution problem(8.2%) and also contribute to the practical life after class also increase their consciousness of environmental problem(59.8%)

난류특성을 이용한 대기오염확산모델의 예측능에 관한 연구

박기학(Ki Hark Park),윤순창(Soon Chang Yoon) 한국환경영향평가학회 2001 환경영향평가 Vol.10 No.2

Gaussian dispersion model is the most widely used tool for the ground level air pollution simulation. Though in spite of the convenience there are important problems on the Pasquill-Gifford` stability classification scheme which was used to define the turbulent state of the atmosphere or to describe the dispersion capabilities of the atmosphere which was each covers a broad range of stability conditions, and that they were very site specific, and the vertical dispersion calculation formula on the case of the unstable atmospheric condition. This paper was carried out to revise the Gaussian dispersion model for the purposed of increase the modeling performance and propose the revised model, which was composed of the turbulent characteristics in the unstable atmospheric conditions. The proposed models in this study were composed of the profile method, Monin-Obukhove length, the probability density function model and the lateral dispersion function which was composed of the turbulent parameters, u_*(friction velocity), ω^*(convective velocity scale), T_L(lagrangian time scale) for the model specific. There were very good performance results compare with the tracer experiment result on the case of the short distance (<1415m) from the source, but increase the simulation error(%) to stand off the source in the all models. In conclusion, the revised Gaussian dispersion model using the turbulent characteristics may be a good contribution for the development of the air pollution simulation model.

시${\cdot}$공간적 고해상도 자동차 배출량 모형의 개발

박성규,김신도,박기학,Park, Seong-Kyu,Kim, Shin-Do,Park, Ki-Hark 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.3

Traffic represents one of the largest sources of primary air pollutants in urban area. As a consequence, numerous abatement strategies are being pursued to decrease the ambient concentration of pollutants. A characteristics of most of the these strategies is a requirement for accurate data on both the quantity and spatial distribution of emissions to air in the form of an atmospheric emission inventory database. In the case of traffic pollution, such an inventory must be compiled using activity statistics and emission factors for vehicle types. The majority of inventories are compiled using passive data from either surveys or transportation models and by their very nature tend to be out-of-date by the time they are compiled. The study of current trends is towards integrating urban traffic control systems and assessments of the environmental effects of motor vehicles. In this study, a model of vehicle emission calculation by using real-time traffic data was studied. Traffic data, which are required on a street-by-street basis, is obtained from induction loops of traffic control system. It is possible that characteristics of hourly air pollutants emission rates is obtained from hourly traffic volume and speed. An emission rates model is allocated with a high resolution space by using geographic information system (GIS). Vehicle emission model was developed with a high resolution spatial, gridded and hourly emission rates.

Web-GIS를 이용한 논산시 하천수질 관리 정보 지원시스템 구현 (Ⅰ)

박기학,오승교,박성규 대한위생학회 2003 대한환경위생공학회지 Vol.18 No.4

The purpose of this study is to construct e-Nonsan. a user friendly river quality management information system for Nonsan-si basin using GIS (geographical information system) technology. GIS was ideally suited featuring a geographical characteristics(e.g.. industries. cattle sheds) and very effectively used in mapping and symbolization for the distribution of the spatial/periodic status(e.g.. pie or column chart) of the point/non-point pollutant source loads which can be effectively applied to a information system on the web-site. And a user interface. GUI(graphic user interface) was designed very diversely and simply enabled the and non-environmental experts connect with the system and obtain a useful information of river quality e-Nonsan, a visual mapping system for rivor quality was developed by reframing the monitoring data as graphic symbols and it was ideally suited to exploling area-wide river quality at a user-friendly manner due to extensibility and scalability along the various survey points. Eventually the final step of this study was to construct e-Nonsan based on Web-GIS could be assessed anywhere if internet service is available and offer a very useful information services of the river quality to the publics.

APSM의 예측능 평가에 관한 연구

박기학,윤순창 한국환경과학회 2003 한국환경과학회지 Vol.12 No.3

The Pasquill-Gifford stability category is a very important scheme of the Gaussian type dispersion model defined the complex turbulence state of the atmosphere by A grade(very unstable) to F grade(very stable). But there has been made a point out that this stability category might decrease the predictability of the model because it was each covers a broad range of stability conditions, and that they were very site specific. The APSM (Air Pollution Simulation Model) was composed of the turbulent parameters, i.e. friction velocity( u_*), convective velocity scale( w_* ) and Monin-Obukhov length scale( L ) for the purpose of the performance increasing on the case of the unstable atmospheric conditions. And the PDF (Probability Density Function) model was used to express the vertical dispersion characteristics and the profile method was used to calculate the turbulent characteristics. And the performance assessment was validated between APSM and EPA regulatory models(TEM, ISCST), tracer experiment results. There were very good performance results simulated by APSM than that of TEM, ISCST in the short distance (<1415 m) from the source, but increase the simulation error(%) to stand off the source in others. And there were differences in comparison with the lateral dispersion coefficient( σ_y) which was represent the horizontal dispersion characteristics of a air pollutant in the atmosphere. So the different calculation method of σ_y, which was extrapolated from a different tracer experiment data might decrease the simulation performance capability. In conclusion, the air pollution simulation model showed a good capability of predict the air pollution which was composed of the turbulent parameters compared with the results of TEM and ISCST for the unstable atmospheric conditions.