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.

디히드로엽산 환원효소 저해제의 정량적 구조-활성 상관관계 연구

박일현,권태익,전근 충남대학교 기초과학연구소 1997 忠南科學硏究誌 Vol.24 No.2

Inhibitors of the enzyme DHFR which is an enzyme of central role in biochemistry, are of great importance in medicine. For pyrimidine- and triazine-type inhibitors, quantitative structure-activity relationship (QSAR) and conformational analysis is performed.

고속도강공구의 절삭온도 예측과 플랭크마모에 관한 연구

전태옥,전언찬,박흥식,배춘익 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2

Temperature distribution on the flank face in orthogonal turning with cutting tool of high speed steel is studied by using a finite element method and experiments. Experiments are carried out to verify the validity of the temperature measurement by using a thermoelectric couple junction imbedded in a cutting tool. Good agreement is obtained between the analytical results and the experimental ones for the temperature distributions on flank face of cutting tool Flank wear were observed by the tool microscope. The analytical results show that the temperature on the top flank face of a tool is higher because of the difference of the friction velocity on each face of the tool.

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.

오스테나이트系 스테인레스鋼 (STS304)의 切削性에 관한 硏究

전태옥,박흥식 동아대학교 공과대학 부설 한국자원개발연구소 1993 硏究報告 Vol.17 No.1

This study was undertaken to investigate the machinability of the austenite stainless steel(STS304) with sintered carbide tool(M40). The orthogonal cutting test was carried out under various conditions such as cutting speed, cutting depth and tool rake angle, etc. On machining STS304 steel, there is the critical cutting speed which is the saw-toothed chip according to variation of rake angle and cutting depth and which it has moved lower cutting range as the cutting speed increases. The pitch of shear zones P as well as the sliding distance D decreases with the increasing of rake angle and with the decreasing of cutting speed. The saw-toothed chip is formed at the shear strain above 1.6 to 3 in case of 0.1㎜ cutting depth and above 1.0 to 2.2 in case of 0.2㎜ cutting depth.

직접 황 회수 공정(DSRP)에 관한 연구

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.

예비 과학교사 교육을 위한 Excel VBA 활용 가능성 모색

박상태,정기주,김준태,육근철 공주대학교 과학교육연구소 2005 과학교육연구 Vol.36 No.-

본 연구에서는 Excel의 강력한 스프레드시트 기능과 Visual Basic 프로그래밍 기능을 이용하여 포물선 운동과 단진자 운동에 관한 시뮬레이션을 개발하였다. 이는 예비 과학교사들의 컴퓨터 시뮬레이션 개발 능력을 함양시키기 위한 것으로, 예비 과학교사들이 전산물리 수업 시간을 통해 직접 개발한 것이다. 모든 프로그램은 독자적으로 개발하였기 때문에 시뮬레이션을 표현하는 방법도 매우 다양하게 나타났다. 여기서는 가장 대표적인 것에 대해서만 소개하고, 전산물리 수업에서의 Excel VBA 활용 가능성에 대해 모색해 보고자 한다. In this study, simulations of parabolic and simple pendulum motion were developed using strong functions of spreadsheet and visual basic programming in Excel. These were developed to enhance capacity of computer simulation through class of computational physics by preservice science teacher. All programs were presented with various styles because they developed personally by themselves. Here we are going to introduce most representative program and grope the possibility of Excel VBA application.

이동 통신 환경에서 혼합형 방식의 효율적인 위치 관리 기법

박태준,이구연 강원대학교 정보통신연구소 2005 정보통신논문지 Vol.9 No.-

In this paper, we proposed a new hybrid location management scheme which combines the movement-based and the time-based location updating policy. In the Hybrid scheme, the location of a mobile subscriber is updated after there are d cell boundary crossing and the timer expires. Simulation results of the hybrid location management scheme show the good performance when the mobile communication system's environment has low CMR (Call to Mobility Rate) and high updating cost. In addition, the hybrid location management scheme is robust in a variety of mobile terminal's mobility.