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.

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.

동적 Kink 현상과 자기 가열 효과가 SOI NMOSFET의 출력 과도 특성에 미치는 영향에 관한 연구

박재우,윤태준 金烏工科大學校 1997 論文集 Vol.18 No.-

Transient characteristics of the drain current of the Fully-Depleted (FD) SOI MOSFET are analyzed based on two-dimensional device simulation. When an ideal step voltage is applied to the gate at ??, the drain current has two unstable states. As the gate voltage is lower than the drain voltage, the drain current is increased rapidly to some initial value, and then rises to the steady-state value in a transient time of 10ns. This is known to be the dynamic kink effect. It is clearly caused by the increase of floating body potential due to accumulated holes which are injected from the drain junction to the body. When a higher gate voltage is applied at same drain voltage, the transient current is reached at some initial value, but the drain current slowly decreases to the steady-state DC value in a long transient time of 1㎲. This reduction of the drain current is attributed to the dynamic self-heating effect which causes the mobility degradation and the negative differential conductance at high gate voltage. In the dynamic self-heating condition, the variation of floating body potential is negligible because impact ionization rate is decreased with increased device temperature.

오스템퍼링 처리한 구상흑연주철의 절삭특성에 관한 연구

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

This study was performed to investigate cutting force characteristics for the purpose of detecting tool wear by variations in cutting force. In this experiment, austempered ductile iron(ADI) is worked by a ceramic tool under finish-machining conditions. The main results obtained are as follows ; 1) In finish machining condition, the magnitude of radial force was the greatest among 3-cutting component forces. 2) The ratio of radial force to tangential force appeared constantly in spite of the variation of cutting condition and nose radius. 3) The ratio of radial force to tangential force increased linearly with respect to tool flank wear width. Thus we knew that tool flank wear is able to detect by the ratio of radial force to tangential force. 4) If tool flank wear exceed by some range, surface roughness decreased with tool flank wear.

양족 로봇에 대한 신경회로망 역모델 학습 제어

박세준,양태규 목원대학교 자연과학연구소 2001 自然科學 硏究論文集 Vol.10 No.1

본 논문에서는 신경회로망을 이용한 양족 로봇에 대한 역모델 학습 제어에 관한 연구를 하였다. 5관절 양족 로봇 모델을 가지고 운동학과 동력학을 구했고 신경회로망의 학습으로 역모델을 구성하였다. 로봇 관절의 원하는 위치, 속도와 가속도를 신경회로망의 입력으로 하고, 원하는 토크를 출력으로 하여 토크 오차가 영(0)이 되도록 가중치를 학습시켜 조절하여 역모델을 구했다. 역모델에 의한 각 관절의 위치, 속도와 가속도를 제어하는 방법을 제안했다. 역전파 알고리즘을 사용하여 컴퓨터 시뮬레이션을 통해 역모델의 효율성을 입증했다. 반복횟수가 많을수록 SSE(sun square error)가 영에 가까워짐을 알 수 있었다. 또한 원하는 토크, 위치, 속도와 반복횟수에 따른 토크, 위치, 속도 오차의 차이를 표로 보여주었다. 반복횟수가 많을수록 토크, 위치, 속도 오차가 적음을 알 수 있었다. In this paper, learning control of inverse for biped robot using neural network is studied. Kinematics and dynamics of a 5-link biped robot model was attained, and by the neural network's learning capability a reverse model was made. Using the robots joint position, speed, and acceleration for the neural networks input and the desired torque as the output, adjusting neural network's learned weights to make the torque error to be zero and attained an inverse model. We proposed a method for each joint position, velocity and acceleration control by the inverse model, and the inverse model efficiency is proved by simulation using back-propagation algorithm. We now know that the larger the iteration number, the closer the SSE(sun square error) approaches to zero, and that the larger the iteration number, the smaller the error of torque, position, and velocity.

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.

Ciprofloxacin의 돼지 호흡기 감염증 및 설사증에 대한 치료효과

전무형,김지영,채미경,서상희,김명철,박창식,김태용,윤효인 충남대학교 형질전환복제돼지연구센터 2004 논문집 Vol. No.8

To evaluate the clinical efficacy of ciprofloxacin (CFX) on treatment of the pigs with respiratory diseases or diarrhea. CFX at various dosages were administered intramuscularly to the diseased pigs selected from the pig farms located in Chungnam province. One hundreds and fourteen heads of pigs with respiratory diseases were divided into five groups and CFX at 0.25, 0.5, 1.0 (= 2.5mg CFX/Kg B.W.) and 2.0 doses were administered i.m. for 5 days. The recovery rates were found 31.8%, 73.9%, 91.3% and 92.0%, respectively, being higher than that of the untreated control group (19.0%). The mortality of the treated groups were 0%, that is lower than that of the control (9.5%). Seven kinds of bacteria were isolated from the respiratory organs of 86 pigs, and 34 (39.5%) of 86 pigs showed the complicated infection. In analyzing by the pigs infected with a single pathogen as P. multocida; A. pleuropneumonia. Staphyloccus spp. or Mymplasma spp., the recovery rates were 0∼66.6% at 0.25 dose, 66.6∼100% at 0.5 dose and 100% in all of 4 pathogens at 1.0 to 2.0 doses. At 0.25 dosage the pigs infected with A. pleuropneumonia showed the lowest recovery rate. One hundreds and twenty two heads of pigs with diarrhea were divided into five groups and CFX at 0.25, 0.5, 1.0 (= 2.5mg CFX/Kg B.W.) and 2.0 doses were administered i.m. for 5 days. The recovery rates were 29.1 %, 40.0%, 80.0% and 88.0%, respectively. The mortality of the treated groups were 0∼8.3%, being much lower than that of the control. Four kinds of bacteria were isolated from the fecal specimens of 94 pigs, and 84 (89.0%) of 94 pigs showed the complicated infection.

냉간성형 금형용강(STD11)의 형조각 방전가공 특성에 관한 연구

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

This study has been performed to investigate MRR(metal removal rate), REW(relative electrode wear), surface roughness, heat transmutation layer and microhardness distribution in cross-section of the machined surface varing pulse-on duration and peak pulse current to find out the best EDM condition of the heat treated STD11 which is extensively used for metallic molding steel by using the die sinking EDM.