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국립공원 구역 조정에 따른 환경,경제,사회적 파급효과 분석
홍현정 ( Hyun Jung Hong ),최현아 ( Hyun Ah Choi ),변병설 ( Byung Seol Byun ),박용하 ( Yong Ha Park ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2013 한국환경복원기술학회지 Vol.16 No.6
As ten years have passed since national parks were adjusted and released inceptively, it is the time for evaluating the effectiveness of the national park policy and improving it on the basis of the evaluation result. In this study, the method of appraising the environmental and socio-economical ripple effect on the implementation of national park regulation were provided, based on the institutional consideration, the environment analysis, the survey of residents consciousness, the statistical analysis and so on. It is applied to target sites where were released from national parks, and the policy direction was suggested for sustainable use and management of national parks. National parks, that exhibit various characteristics depending on geographical and local conditions, were categorized through the statistical approach. Released sites from Seoraksan National park, where was categorized as the core national park for sustainable use and management, were evaluated environmentally based on the time-series analysis of environmental thematic maps and socio-economically based on the survey on residents perceptions. As a result of this study, the environmental effect of released sites has been declined or threatened, and the residents` economic, social and living condition in these areas are still not improved(p<0.05) since the adjustment of national parks. Based on the policy approach reflecting regional characteristics, natural resources are kept and enhanced for the sustainable use and management of national parks. And a consensus on the national park policy of national park should be developed between local residents and voluntary participation and public awareness should be attracted from them, based on the construction and the supplement of the infrastructure.
박정현,조용준 조선대학교 국토개발연구소 1997 국토개발연구 Vol.17 No.1
This study examines parking types, methods and hours on existing detached housing areas at Sanjung 1 dong, Mokpo-city, carried out the questionnaire of class characteristics, possession of vehicle and using pattern of parking space for the residents and then the following conclusions are obtained. 1. 60% of respoding households posses the car, but the cases with parking lot are just 2.0% and over of car owners parked their cars illegally on the road, and the most sinificant reason of illegal parking is the lack of parking facilities(74%). 2. On the possession of car by that of house, homeowers of respoding households are 0.63 car/households and lessees are 0.65 car/households. 3. On the parking conditions on the road of housing area, there is a difference by a day of the week, but it begins to be decreased from 07:00, increased from 18:00 and it is the peak on 23:00. 4. most of the respondents (90%) agree to the contruction of paid parking iot and in this case, the appropriate distance to houses is within 50m and in the opinion of enforcement of car shed certification and of double taxation of two cars per households, 60% of the respondents (60%) agree to this. To sum up the above conclusions, the road of existings detached house is the stage of the conflicts among neighbors as well as the violation of walking right due to illegal parking cars on the roda and it is urgent to secure the parking space due to the construction of multi-household houses. However, since it is difficult for existing detached housing area to secure the security of parking space due to the narrow housing area and the unclear road limit in housing area, the methods which use the common parking facilities by developing surrounding idle area, idle space of public agencies and existing housing site should be examined and for this, the various incentive system should be arranged and operated
朴哲浩,朴吉俊,李相于,金永明,朴贊熙,玄松子,呂南會,朴相甲,金榮俊 東亞大學校附設스포츠科學硏究所 1989 스포츠科學硏究論文集 Vol.7 No.-
This study aims at revealing the physiological responses of dehydration (DH) and rehydration (RH) in intermittent exercises at the work intensity of 70% HR max. First, with general student public, three times of exercise (each for 20 minutes) at the given work intensity were taken, with a break for 25 minutes respectively. Their heart rate, rectal temperature and plasma electrolyte concentration both DH and RH were measured. Second, in two groups of athletes and non-athletes, 9 rounds of exercise (for 100 minutes) and 8 breaks (for 60 minutes) were taken, with RH forced 10 times to compensate for the subjects' water loss. Their change in sweat loss and plasma electrolyte concentration as well as the IVDP(Intensive Voluntary dehydration Phenomenon) were experimented. The summary of this research follows. 1) Mean heart rate and rectal temperature in intermittent exercises were higher at DH than at RH, growing up at the increasing level of DH. 2) RH saw no change in the plasma concentration of Na+, K+ and Cl-, while DH observed a significant increase. 3) HCO₃made a significant decrease at DH before growing up. 4) Mg++ had no change, while Ca++ increased significantly at RH and DH. 5) Lactate showed an increase with significance at RH and DH, especially greater at DH. 6) Osmotic pressure increased meaningfully at DH. 7) Anion gap increased significantly at DH and RH. 8) On the other hand, when the forced RH was held, the group of athletes had greater sweat loss per body surface area than that of non-athletes. 9) The athletes' plasma concentration of Na+ and Cl- revealed a clear decrease. 10) There was seen no significant change in the plasma concentration of K+, Mg++ and Ca++ in both groups. 11) The IVDP occurred at the RH of 2.3ℓfor athletes and more than 2.5ℓfor no-athletes.
Yong‑Ho Kim,Hyo‑Sang Yoo,Jeong‑Han Lee,Ik‑Hyun Oh,Hyun‑Kuk Park,Hyeon‑Taek Son 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.7
In order to investigate the microstructure and mechanical properties on Al–25Cr–5Si (at%) alloy, a mixed powder with pureelements and an alloy powder using a gas atomization process were used. Fine and high purity Al–25Cr–5Si (at%) alloypowder was successfully prepared by gas atomization and densified using a spark plasma sintering (SPS) process. The overallpowder size distribution of the mixed Al, Cr, and Si elemental powders was in the range of 10–15 μm. The atomized Al–Cr–Sialloy powder was fine and spherical in morphology and difficult to be formed by intermetallic formation. Densification wasclearly confirmed at 1000 °C, with almost isolated pores formed, by clear removal of pores between particles, deformationof particles, an increase in the number of contacts, and a change in size between particles. As a result of XRD analysis ofthe sintered compacts, single phase was observed using the mixed powder, but the compact using gas atomization remainedthe alloy phase even at the process temperature. The Vickers hardness of the compacts by mixed powder was observed at59.70 Hv and the compact using gas atomized powders on the temperature 1000 °C of the Vickers hardness increased to702.6 Hv. The compressive yield strength of the compact with mixed powder was 195.24 MPa and the compressive strengthof the compact with gas atomized powder increased to 802.07 MPa. It is considered not to be decomposed by the AlCrSi,Al13Cr4Si4and Al8Cr5phases sintering process, resulting from the improvement of mechanical properties.
八公山 自然公園의 利用者 滿足에 關한 因果模型 硏究 : Case Study of Palgong Natural Park in Taegu
朴贊龍,玄重英 영남대학교 자원문제연구소 1993 資源問題硏究 Vol.12 No.-
This research suggests a causal model to investigate factors and variables which significant effects on user satisfaction with natural park recreational facilities in Palgong Natural Park in Daegu, and thereby identifing implications for planning and development of urban natural parks and provincial parks. For this study data were gathered by self- administered question-nares from 933 households selected by the multi - stage probability sampling method. The analysis of the data consists of two phases. The first involves exploratory factor analysis of the draw meaningful factors from the data. Four factors were identified. The second phase test the casual model of this research employing LISREL methodology. On the base of the analysis results. important implication for planning urban natural park and provincial park are recommended.
방사선사진의 인덱스-순서 분석을 통한 치아경조직의 탈염화 검출
박동현,박영호,김경숙,박정훈,이기자,최삼진,최용석,황의환,박헌국 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.2
Purpose : The purpose of this study was to develop the radiographic technique for detecting the demineralization which is known as indication of dental caries. Materials and Methods : This technique was based on the comparing of multiple radiographs which was irradiated by multiple X-ray spectra. For the meaningful comparing, the multiple radiographs were reconstructed to the dosimetrically consistent images using a standard material. The difference of resulting images of same target with multiple spectra represents the difference of response of material as regards the spectra. Results : We have found about 10% of demineralization of dental hard tissues particularly in the proximal region through the analyzing of differences. Conclusion : Most intriguing thing in this investigation was that the method to analyze difference shows us to an anatomic structure of dental hard tissues even if absolute values of optical density were excluded during the procedures.
홍성욱,박중윤,김현수,박재현,박창용 金烏工科大學校 産業技術開發硏究院 1999 産業技術開發硏究 Vol.15 No.-
The present paper investigates the chatter stability of a milling spindle-workpiece system in face milling process. To this end, a new method using frequendy response function is adopted for predicting the chatter vibration. A compliant workpiece is used to make the spindle-workpiece system easily exposed to chatter vibration. The entire experimental procedure, including measurement of frequency response function and cutting coefficients, is demonstrated. The experimental result shows that the chatter stability prediction method using frequendy response function is of great use in face milling process.