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주차원단위 산정 모형 개발에 관한 연구 -광주광역시 공동 주택 아파트를 대상으로-
권성대,고동봉,박제진,하태준,Kwon, Sung-Dae,Ko, Dong-Bong,Park, Je-Jin,Ha, Tae-Jun 대한토목학회 2014 대한토목학회논문집 Vol.34 No.2
도시의 급격한 팽창과 함께 주택부족 현상이 나타나게 되자, 정부는 주택부족 문제 해결을 위해 대규모 택지개발을 통하여 주택보급을 확대시켰다. 이러한 현상으로, 공동주택은 우리나라 전체 주택의 83% 수준을 유지하고 있고, 그 중 아파트가 차지하는 비중은 50%로 꾸준한 증가 추세를 보이고 있다. 이로 인해 아파트의 경우 입주민들의 승용차 보유 증가에 따른 아파트 단지 내 주차공간 부족문제 등 제반 주차 관련 문제가 발생하고 있다. 특히, 주차계획대수 수립 시 교통영향평가의 주차수요예측 중 전용면적을 고려한 주차원단위 산정 방법은 기존 계획보다 세대수는 증가하여도 전용면적이 작아지면 계획주차대수는 감소하는 것으로 나타나, 보다 현실적인 주차원단위 산정이 필요한 실정이다. 이에 본 연구는 공공주택 아파트를 대상으로 현실에 적합한 주차원단위를 산정하고자 한다. 현장조사 및 설문조사를 실시하고, 구득자료에 대한 분석을 수행함으로써, 기존 교통영향평가의 주차원단위 산정 문제점을 도출하였다. 또한, 주차수요예측에 영향을 미치는 요인 선정을 통해 주차원단위 산정모형을 개발하였다. 마지막으로 실제 조사된 아파트 주차원단위 자료를 통해 기존 교통영향평가의 주차원단위 산정과 본 연구에서 제시한 주차원단위 산정모형을 비교 분석하였다. 향후 본 연구에서 개발된 주차원단위 산정모형은 주차장법 기준 정립은 물론 보다 현실적인 주차수요예측 수행에 적극 활용될 수 있을 것으로 판단된다. The rapid expansion of cities led to the shortage of housing in urban areas. The government compensated for this shortage through large scale residential developments that increased the housing supply. The supply of condominium apartments remains above 83% of the entire housing supply, and the proportion of apartments are at a steady increase, at about 50%. Due to the increase, illegally parked cars resulting from the shortage of parking spaces within the apartment complex have become increasingly problematic as they block the transit of emergency vehicles, and heighten the tension among neighboring residents in obtaining a parking space. Especially, the future residents are considered to plan the parking based on the estimated demand for parking. However, the parking unit method utilized to estimate the parking demand accounts for the exclusive use of space, which is believed to be far from the parking demands in reality. The reason for this discrepancy is that, as the number of households decrease, and area of exclusive space is expanded, the planned parking increases. On the other hand, when the number of households increase, and the area of exclusive space is reduced, the planned parking decreases, thus methods to recalculate the parking units based on estimated parking demand is an urgent concern. To estimate the parking units based on condominium apartments, this study first examined the existing research literature, and appointed the field of investigation to collect the necessary data. In addition, field study data and surveys collected and analyzed, in order to identify the problems underlying parking units, and problems regarding the current traffic impact assessment parking unit calculation method were deduced. Through identifying the influential factors on parking demand estimates, and performing a factorial analysis based on the collected data, the variables were selected in relation to the parking demand estimates, to develop the parking unit estimate model. Finally, through comparing and verifying the existing traffic impact assessment parking unit estimate against the newly developed model using collected data, a far more realistic parking unite estimate was suggested, reflecting the characteristics of the residents. The parking unit estimate model developed in this study is anticipated to serve as the guidelines for future parking lot legislature, as wel as the basis to provide a more realistic estimate of parking demands based on the resident characteristics of an apartment complex.
Influence of Al2O3 Content and Cooling Rate on Crystallization in Fe2O3–CaO–SiO2–Al2O3 Systems
Tae Jun Park,Joon Sung Choi,Dong Joon Min 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.9
The behavior of silico-ferrite of calcium and aluminum (SFCA) phases and the influence of sintered ore quality were investigatedusing a confocal laser scanning microscope to understand how the Al2O3content of iron ore affects the sintered orestructure and the crystallization behavior of SFCA in a Fe2O3–CaO–Al2O3–SiO2 pseudo-quaternary system. The experimentalresults were used to inform simulations of the heterogeneous dynamic behavior in response to the rapid temperature changesand various chemical compositions typically encountered in actual sintering processes. Increasing the Al2O3content in theFe2O3–CaO–Al2O3–SiO2 pseudo-quaternary system led to the hematite content decreasing, which affects the reducibilityof the sintered ore. The correlation between the creation of SFCA and the cooling effect associated with varying the Al2O3is discussed in detail.
지리산국립공원 심원계곡 생태경관 복원공사지역 식생 변화
정태준 ( Tae-jun Jung ),김연경 ( Yeon-Gyeong Kim ),김영진 ( Young-jin Kim ),정명희 ( Myung-hee Jung ),박경희 ( Kyoung-hee Park ),신창근 ( Chang-keun Shin ),박선홍 ( Seung-hong Park ),김영선 ( Young-sun Kim ) 한국환경생태학회 2021 한국환경생태학회지 Vol.35 No.3
본 연구는 지리산국립공원 심원계곡 생태경관 복원공사지역의 모니터링 결과를 분석하여 체계적인 복원관리를 도모할 수 있는 기초자료를 확보하는데 그 목적이 있다. 복원사업이 완료된 2017년도에 식생 모니터링을 위한 조사구 12개소와 대조구 4개소를 설치하였고, 2017년과 2020년의 상대우점치, 종다양도지수, 유사도 등의 변화를 분석하였다. 복원사업 시 수목이 식재되었던 조사구는 종다양도지수가 0∼1.4552로 나타났고, 대조구와의 유사도지수에서는 1개 조사구가 1.32%로 분석된 것을 제외하고 모두 0%로 나타났다. 조사구의 종다양도지수 및 유사도지수가 매우 낮은 것은 복원사업 시 식재된 수목이 고사하거나 멧돼지 피해, 유수에 의한 침식으로 유실되는 등의 영향으로 판단되었다. 반면 복원사업 시 수목이 식재되지 않은 미식재 조사구는 종다양도지수가 0.9538∼2.3222로 나타났고, 유사도지수는 최대 8.33%까지 분석되었다. 국립공원 생태경관 복원공사지역의 복원 공법 개발을 위한 장기 모니터링과, 미식재 조사구의 천이과정을 분석하는 지속적인 연구가 필요하다. This study aims to obtain basic data for systematic restoration by analyzing the monitoring results of the Shimwon Valley Ecological Landscape Restoration Project area in Jirisan National Park. In 2017, when the restoration project was completed, 12 monitoring plots and 4 control plots were installed for vegetation monitoring, and changes in the relative dominance, species diversity index and similarity between 2017 and 2020 were analyzed. The species diversity index of the surveyed areas where trees were planted during the restoration project was 0-1.4552, and the similarity index with the control group was 0% except for one survey area at 1.32%. The very low species diversity index and similarity index in the survey areas were attributed to the loss of trees planted during the restoration project due to death, damage by wild boars, or erosion by running water. On the other hand, the species diversity index was 0.9538-2.3222 in the monitoring plot where no tree was planted, and the similarity index was analyzed to be as high as 8.33%. It is necessary to continue the long-term monitoring for the development of ecological landscape restoration methods in the national park and analysis of the succession in monitoring plots where no trees were planted.
임신부 뇨로부터 정제된 인간 상피세포 증식 인자 유사체의 in vitro bioassay 및 특성
박세철,전재현,남정현,권태종,고인영,유광현 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.4
벤조산흡착, 음이온 교환수지, 단일클론항체을 이용한 immunoaffinity chromatography를 통하여 임신부 뇨로부터 천연의 hEGF를 정제하였다. 정제된 hEGF는 μ Bonda C_18 column을 사용한 HPLC 분석을 통하여 4개의 fraction으로 분리가 가능하였으며 western blot과 double immunodiffusion 실험 결과, 각각의 fraction이 hEGF의 특성을 가진 유사체인 것을 알 수 있었다. 또한 hEGF 표준 물질과의 spiking 및 아미노산 분석 등을 통하여 두 번째 fraction이 nhEGF와 동일한 것으로 확인하였다. nhEGF 및 그 유사체의 생물학적 활성 비교를 위하여 NIH 3T3 세포주에서 5'-Brdu incorporation 측정을 위한 labelling 시간, 혈청 농도의 최적 조건을 결정하였다. NIH 3T3 세포주의 DNA 합성능은 0.2% FCS가 포함된 저혈청 배지에서 hEGF가 0.1~10 ng/ml 농도로 첨가하였을 때 증가하는 경향을 나타냈다. HPLC를 통하여 분리된 두번째 hEGF 유사체가 다른 유사체보다도 생물학적인 활성이 우수하였으며, rhEGF 표준물질과의 spiking 및 아미노산 서열 분석등을 통하여 nhEGF로 밝혀졌다. 임신부의 뇨의 hEGF 유사체 함량중 natural hEGF는 46%이었다. Natural human epidermal growth facto (nhEGF) was purified from pregnant human urine by benzoic acid adsorption, DEAE-Sepharose ion exchange, and immunoaffinity chromatography. The purified nhEGF was further separated into four fractions using Bondapak C_18 HPLC system. Following characterization by Western blot and double immunodiffusion, we found that each fraction corresponds to four derivatives of the nhEGF. For biological analysis of nhEGF, we optimized the labeling time and serum concentration for the incorporation of 5-bromo-2'-deoxy-uridine (BrdU), a non-radioactive alternative for [^3H]-thymidine uptake, into NIH 3T3 cells. The DNA synthesis of NIH 3T3 cells was gradually increased at the nhEGF concentrations between 0.1~10 ng/ml in the Dulbecco's Modified Eagles Medium (DMEM) containing 0.2% Fetal calf serum (FCS). When we assayed the biological activity of four fractions, the activity of the second fraction was superior to that of the others.
전기일,박출재,이태호 진주산업대학교 1992 論文集 Vol.30 No.-
본 실험은 黃化水素 취기를 생물학적 방법으로 제거하기 위하여 함수율, 용도, 영양염류 등을 변화시키면서 생물학적 최적조건을 발견한 다음 황화수소 입구농도를 100, 200, 300ppm, 표면적 부하를 40, 60, 80㎥/㎡·hr로 변화시켜 결과 다음과 같은 결론을 얻었다. 낙엽 Compost에 의한 생물학적 탈취는 가능하였으며, 낙엽 Compost를 이용하여 황화수소 취기의 탈취를 위한 생물학적 최적온도를 온도 20~30℃, 함수율 62±3%이었다. 표면적부하 40㎥/㎡·hr, 충진층 높이 50㎝에서 황화수소의 농도별 제거율은 100ppm에서 99.9%이상, 200ppm에서 99.2%, 300ppm에서는 84%였으며, 농도 200ppm, 충진층높이 90㎝에서 표면적 부하를 40, 60, 80㎥/㎡·hr로 변화시켰을 때 제거율은 각각 99.9%이상, 99.9%, 85%이었다. The stydy was performed to remove hydrogen sulfide odor gas by the bio-filter. The optimum conditions of water contents, temp., and inorgarnic matters for this method was determined with a fixed concentration of hydrogen sulfide odor gas. Under this optimum conditions, the follwing results were obtained from various concentrations of hydrogen sulfide odor gas(100, 200, 300 ppm) and surface area load(40, 60, 80 ㎥/㎡·hr). Biological deodorization by leaf compost was feasible and its optimum condition of temperature and water contents was 20~30℃ and 62土3%, respectively. The rate of deordorization of hydrogen sulfide odor gag(100, 200, 300 ppm) with he height of packing material 50㎝ and surface area load 40 ㎥/㎡·hr was great than 99%, 99.2%, and 80%. Similarly, the rate of deordorization of 200ppm of hydrogen sulfide odor gas at surface area load(40, 60, 80 ㎥/㎡·hr) with 90㎝ of the height of packing material was great than 99%, 99% and 85% respectively.
전태성,박종호 忠州大學校 2007 한국교통대학교 논문집 Vol.42 No.-
The wastes and uneaten feeds from farmed fish contained high concentrations of nutrients, such kinds of materials were released to the environment without manage and they increase the pollution of environment. Management methods are required to solve these problems. In present, a lot of methods existed in managing the wastes from recirculating aquacultyure system, the biological filter chamber included submerged biofilter, rotational biological contactor (RBC) and fluidized bed biofilter, etc. In this research, the typical and advanced DynaSand Filters were experimented. The advanced DynaSand Filter was recently modified with fluid mechanics and physical chemistry theories applied to water treatment plants. This advanced filter focuses on improvement of backwashing, oxygen transport, turbidity removal, continuous head loss by detecting wastewater characteristics and automatic the DynaSand Filter operation. The DynaSand Filter operates by removing COD, ammonia, and suspended solids. Those are the major pollutants usually found in aquaculture wastewater. The total volume of the DynaSand Filter was 70 liters, while the working volume in a cycle was 35 liters. In this research, the advanced DynaSand Filter investigated for treating aquaculture showed a removal efficiency in SS, ammonia, T-P, SRP of 71, 84, 85 and 88% on average respectively.
全泰玉,朴興植,鄭明眞,金晶坤 동아대학교 공과대학 부설 한국자원개발연구소 1988 硏究報告 Vol.12 No.2
This paper has been carried out ot clarify the behavior of the BUE experimented Aluminium with using tungsten caribide tools. The results obtained are as follow : There was the block that varied suddenly at the initial cutting force. From the point of cutting distance 150㎜ Happened the BUE and the cutting force was the normal state. As share angle is increased, compression coefficient of the chip are increased. Relation between the friction coefficient of chip side and tool rake side can make the modelization studying the BUE size. As cutting speed is increased, chip thickness is decreased.
전진혁,한기보,박노국,이종대,류시옥,이태진 한국공업화학회 2004 응용화학 Vol.8 No.1
At Hot gas desulfurization, which is one of the unit process for Integrated coal Gasification Combined Cycle(IGCC) system, SO₂ was generated in the regeneration process of sorbents. SO₂ is a major atmospheric pollutant causing various ecological damages and health problems. Direct sulfur recovery process(DSRP) is the catalytic reduction of SO₂ to elemental sulfur by a reductant gas such as CO, H_(z) or CH₄. In this work, the optimization of reaction condition such as the reaction temperature, space velocity and CO/SO₂ molar ratio in DSRP was performed. Sn-Zr compound was used as catalyst in DSRP. Especially, in this process, at low temperature of 598 K, elemental sulfur yield was very high. Generally, DSRP was performed at high temperature above 673 K. Therefore, this process has many advantage from the viewpoint of economy.
工具刃先의 損傷에 미치는 構成刀先의 生成 및 脫落擧動에 관한 硏究
전태옥,박흥식 동아대학교 공과대학 부설 한국자원개발연구소 1993 硏究報告 Vol.17 No.2
This study was attempted to investigate the effect of the behaviour of built-up edge on tool failure of high speed steel (SKH55) cutting with SS41. The cutting test was carried out with various experimental conditions. The specific cutting force K_(c) and K_(t) (the vertical and radial cutting force) had small values owing to the enlargement of the rake angle below 40m/min of the cutting velocity. The enlargement of the built-up edge affected directly the crater ratio C. The crater wear in the neighbourhood of cutting tool had nothing to do with cutting time and flaten region which had 4㎛ of depth and 0.4㎜ of width was in existence. The micro-hardness distribution in the deepest part of crater was not affected by nearly the cutting time. Through this cutting experiment it is appeared 4 kinds of tool failure according to behavior of the built-up edge in combination of cutting speed and feed.
다발성 비장경색을 동반한 장티프스균(Salmonella enterica serovar Typhi)에 의한 심내막염 1예
박경민,김남중,오동렬,박진태,김양수,우준희,류지소 대한내과학회 2003 대한내과학회지 Vol.65 No.6
저자들은 3㎜의 우종과 함께 이판의 대동맥판막을 가진 환자에서 다발성 비장경색을 동반한 장티프스균에 의한 감염성 심내막염으로 진단한 환자 1예를 경험하였기에 문헌고찰과 함께 보고한다. Infective endocarditis is a very rare cardiac manifestation of salmonella infection, and splenic infraction is a rare noncardiac complication. We describe a case of Salmonella enterica serpvar Typhi bacteremia which was complicated by infective endocarditis with multiple splenic infractions in a previously healthy 47-year-old female. She didn't have any history of foreign travel. The isolate of Salmonella enterica serovar Typhi was susceptible to cephalosporins, aminoglycosides, quinolones but resistant to ampicillin. After 3 weeks of intravenous and oral therapy with ciprofloxacin, follow up transthoracic and transesophageal echocardiography showed no vegetation. In addition, follow up abdominal CT showed decreased size of splenic infractions. The patient was treated with 2 weeks of intravenous and 4 weeks of oral ciprofloxacin, and was cured without sequelae or relapse for 6 months follow-up.