도시공원 조성에 따른 미기후환경의 변화 분석

김대욱(Kim, Dae-Wuk),김중권(Kim, Jung-Kwon),정응호(Jung, Eung-Ho) 한국도시설계학회 2010 도시설계 : 한국도시설계학회지 Vol.11 No.2

본 연구에서는 대구광역시 중구의 국채보상운동기념공원과 2.28기념중앙공원을 대상으로 도시공원의 조성 후 열섬 영향 정도와 미기후환경 변화를 정량적으로 분석하여 과거대비 미기후 측면의 효율성 검증과 도시내 공원의 중요성 및 필요성에 대해 살펴보고 이를 바탕으로 미기후개선을 위한 친환경적 도시공원 계획 및 도시계획 방안 제시를 목적으로 한다. 본 연구에서는 대구광역시 중구에 위치하는 2.28기념중앙공원과 국채보상운동기념공원을 대상으로 3차원 미기후분석프로그램인 ENVI-met을 이용하여 미기후환경(온도, 습도, 바람)의 변화를 분석ㆍ고찰하였다. 2.28공원 및 국채보상기념공원 조성으로 인한 미기후환경 변화를 요약하면, 지점별로 차이가 있지만 기존대비 각각 2.27%, 1.50%의 온도저감효과가 있는 것으로 나타났다. 습도는 기존대비 각각 5.52%, 2.83%의 상승효과가 나타났다. 본 연구는 과거의 미기후환경을 예측하여 공원 조성을 통한 미기후환경의 변화를 정량적으로 분석하였다는데 가장 큰 의의가 있다. 향후 도시계획 이전에 미기후의 변화를 모의하여 계획에 반영한다면 보다 쾌적한 도시조성에 효과를 줄 것이라 판단된다. This study examined the effect of Gukchae-bosang Memorial Park(GBM park) and 2.28 Jung-ang Memorial Park(JAM park) located at Jung-gu, Daegu on heat island phenomenon. The changes in micro-climate environment after the development of urban parks were analyzed quantitatively to evaluate the efficiency of the parks in terms of micro-climate control. The importance and necessity of urban parks are reviewed based on the analysis, and the guidelines for eco-friendly park and town planning are suggested. In this study, the microclimate environment factors of the urban parks, such as temperature, humidity, and wind, were analyzed and examined by ENVI-met -- a three dimensional micro-climate analysis program. The micro-climate environmental changes caused by the urban parks are as follows. The temperature decreasing effects by the parks were 2.27%(JAM park) and 1.50%(GBM park), and the humidity increasing effects were 5.52%(JAM park) and 2.83%(GBM park) respectively. The significance of this study is that the changes of micro-climate environment by urban parks were analyzed quantitatively on the assumption of the past micro-climate environment. It is expected that the simulation of micro-climate changes from the results of this study helps planners develop a better plan to create more pleasant urban environment.

도시열섬현상 완화를 위한 녹지네트워크 및 바람길 구축

차재규 ( Jae Gyu Cha ),정응호 ( Eung Ho Jung ),류지원 ( Ji Won Ryu ),김대욱 ( Dae Wuk Kim ) 한국지리정보학회 2007 한국지리정보학회지 Vol.10 No.1

현대의 도시는 살아있는 생명체처럼 매일 변화를 거듭하고 있다. 이전과 달리 집중된 공간에서 짧은 시간동안 일어난 공간의 변화는 도시환경을 악화시켜 환경문제를 유발하였다. 특히 지표면 및 토지이용의 변화 등으로 발생된 도시열섬현상은 도시민의 건강과 경제적인 손실 등 사회문제로 대두되고 있다. 이러한 도시열섬현상을 해결하기 위한 도시계획적 접근방법의 하나가 녹지네트워크의 도입이다. 본 연구에서는 대구광역시 중구와 남구를 사례대상지로 선정하여 도시열섬현상 분석, 토지피복분류, 녹지네트워크 연계가능성 분석, 바람길 분석을 통하여 녹지네트워크 구축을 제안하였다. 연구결과 남쪽의 앞산 및 산지지역을 녹지네트워크의 핵, 두류공원 및 달성공원 등 남구 2개 지역과 중구의 6개 지역의 근린공원을 거점으로 하고 학교부지와 공원시설 등을 포함하는 지역을 거점 가능지역으로 설정하여 대상지역의 광역 및 세부 그린네트워크 구축을 제안하였다. 특히 앞산과 연결되는 캠프워커는 핵과 연결되고 있는 거점지역으로서 향후 미군부대 이전 후에 반드시 보전되어야 할 지역으로서 판단된다. 또한 녹지네트워크를 통해 바람길을 확보하기 위하여 중구의 수성교 인근과 남구의 캠프워커지역을 바람통로확보지구를 설정하는 것이 바람직할 것으로 판단된다. Like other organic beings, modern cities change every day. Unlike in the past, changes of space which have been taking place in concentrated spaces during short periods of time have worsened the environment of cities creating environmental problems. In particular, the urban heat-island phenomenon, which is caused by changes in using the earth`s surface, has emerged as a key social issue along with health problems and economic difficulties. The Green Network has been introduced as an urban planning approach to solve the urban heat-island phenomenon. This study suggests constructing a Green Network through analyzing the urban heat island phenomenon, land cover classification, and linkage possibility with the Green Network and wind corridors by researching Jung-Gu, and Nam-Gu in Daegu Metropolitan City. In conclusion, this study presented the construction of a broad and detailed Green Network of object areas by assigning Apsan to the southern area and mountain area as the core, two areas of Nam-Gu and six areas of Jung-Gu such as Duryu Park and, Dalsung Park as footholds and other school land and park facility areas as footholds-to-be areas. In particular, Camp Walker, which is connected with Apsan, is not only a foothold but connected to the core, is necessary to preserve after being transferred from the U.S. Army. In addition, assigning the Susung Bridge area of Jung-Gu and the Camp Walker area of Nam-Gu as the wind corridor areas is recommended.

A Study on Coding Education for Non-Computer Majors Using Programming Error List

Jung, Hye-Wuk The International Promotion Agency of Culture Tech 2021 International Journal of Advanced Culture Technolo Vol.9 No.1

When carrying out computer programming, the process of checking and correcting errors in the source code is essential work for the completion of the program. Non-computer majors who are learning programming for the first time receive feedback from instructors to correct errors that occur when writing the source code. However, in a learning environment where the time for the learner to practice alone is long, such as an online learning environment, the learner starts to feel many difficulties in solving program errors by himself/herself. Therefore, training on how to check and correct errors after writing the program source code is necessary. In this paper, various types of errors that can occur in a Python program were described, the errors were classified into simple errors and complex errors according to the characteristics of the errors, and the distributions of errors by Python grammar category were analyzed. In addition, a coding learning process to refer error lists was designed to present a coding learning method that enables learners to solve program errors by themselves.

New Peak-Cancellation to Reduce PAPR and Out-of-Band Emission of OFDM Signals

Jung-Wuk Choi,Dong-Joon Shin 한국통신학회 2005 한국통신학회 학술대회논문집 Vol.2005 No.6

Angiotensin II AT 1 Receptor Blockade Changes Expression of Renal Sodium Transporters in Rats with Chronic Renal Failure

Jung Yong Wuk,Kim Eun Jung,Kwon Tae Hwan 대한의학회 2005 Journal of Korean medical science Vol.20 No.2

Estimation of viscoelastic parameters in Prony series from shear wave propagation

Jung, Jae-Wook,Hong, Jung-Wuk,Lee, Hyoung-Ki,Choi, Kiwan American Institute of Physics 2016 Journal of Applied Physics Vol.119 No.23

Investigation on the resistance of steel-plate concrete walls under high-velocity impact

Jung, Jae-Wook,Yoon, Young-Cheol,Jang, Heung Woon,Hong, Jung-Wuk Elsevier 2019 Journal of constructional steel research Vol.162 No.-

<P><B>Abstract</B></P> <P>In this study, an influence of the front steel plate of the steel-plate concrete (SC) composite walls on the impact resistance performance is analytically derived, and verified by comparison with numerical analyses and experiment results. SC composite wall is remarkably superior in resistance against impacts compared to normal concrete because steel plates control and prevent fragmentation caused by the fracture of concrete material. An analytical criterion for estimating resistance capacity against impact loads is proposed by adding the effect of a front steel plate into the existing impact resistance equation of SC composite walls, and the criterion more accurately predicts the failure modes of SC composite walls in the impact tests. Finite element (FE) models are constructed to predict the impact response of SC composite walls numerically and verified with experiment results. The critical velocity is numerically derived using FE models by performing a large number of iterative simulations, and the proposed criterion including the effect of front steel plate is more accurate for estimating critical velocity than the formula that ignores the front steel plate. The proposed analytical and numerical procedures will be useful for assessing the critical velocities and failure modes of SC composite walls with better accuracy.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We derive an analytical criterion including the effect of the front steel plate. </LI> <LI> Numerical models are verified in terms of the residual velocity of the projectile. </LI> <LI> The criterion is verified by comparing with experimental and numerical results. </LI> <LI> The effect of the front plate should be considered for accurate estimation. </LI> </UL> </P>

Effect of second hardening on floor response spectrum of a base-isolated nuclear power plant

Jung, Jae-Wook,Jang, Heung Woon,Kim, Jung Han,Hong, Jung-Wuk Elsevier 2017 Nuclear engineering and design Vol.322 No.-

<P><B>Abstract</B></P> <P>The floor response spectra are calculated by constructing a numerical model (APR1400) equipped with base isolators of a bilinear material and a Bouc-Wen material, respectively, in order to investigate the effect of the second hardening. The variations of the earthquakes are incorporated to the loads, and two different properties of the isolator materials are modeled. The second hardening behavior increases the stiffness of the isolator in the high strain regime and suppresses the displacement of the isolator. Therefore, the role of the base isolation device isolating the superstructure from the ground motion does not perform properly, which causes amplification of the floor response of the superstructure. In practice, the second hardening of the isolator material might need to be taken into account for designing the base isolation system.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The effect of variability in the isolation device and earthquake is evaluated. </LI> <LI> The variability in earthquake characteristics dominates the floor response spectrum. </LI> <LI> Bouc-Wen model is employed to consider the second hardening behavior of isolator. </LI> <LI> The second hardening behavior is evaluated at various PGA levels. </LI> </UL> </P>

Structure–activity relationships of novel quinazoline derivatives with high selectivity for HER2 over EGFR

Jung Wuk Lee,Changyu Choi,Jihyung Kim,Sohee Lee,Jina Kim,Yoonji Lee,Kyung Hoon Min 대한약학회 2022 Archives of Pharmacal Research Vol.45 No.3

The gene amplifi cation of human epidermalgrowth factor receptor 2 (HER2) plays an essential role in theproliferation and progression of several cancers. However,HER2 inhibitors such as lapatinib strongly suppress wildtypeEGFR, resulting in severe adverse eff ects. Therefore,there is an unmet need for highly selective HER2 inhibitors. In this study, we describe the design and synthesis of novelquinazoline derivatives that exhibit enhanced selectivity forHER2 over wild-type EGFR. Structure–activity relationshipanalysis indicated that the selectivity for HER2 over EGFRdepends on the aniline moiety at C-4 and the substituentsat C-6 in the quinazoline derivatives. Compound 7c withan IC 50 of 8 nM for HER2 exhibited signifi cantly higherselectivity for HER2 over EGFR, with a 240-fold improvementover lapatinib. In addition, the synthesized compoundsexhibited anti-proliferative activity in the nanomolar rangeagainst SKBR3, a human breast cancer cell line that overexpressesHER2.

A Study on the Current State of Artificial Intelligence Based Coding Technologies and the Direction of Future Coding Education

Jung, Hye-Wuk The International Promotion Agency of Culture Tech 2020 International Journal of Advanced Culture Technolo Vol.8 No.3

Artificial Intelligence (AI) technology is used in a variety of fields because it can make inferences and plans through learning processes. In the field of coding technologies, AI has been introduced as a tool for personalized and customized education to provide new educational environments. Also, it can be used as a virtual assistant in coding operations for easier and more efficient coding. Currently, as coding education becomes mandatory around the world, students' interest in programming is heightened. The purpose of coding education is to develop the ability to solve problems and fuse different academic fields through computational thinking and creative thinking to cultivate talented persons who can adapt well to the Fourth Industrial Revolution era. However, new non-computer science major students who take software-related subjects as compulsory liberal arts subjects at university came to experience many difficulties in these subjects, which they are experiencing for the first time. AI based coding technologies can be used to solve their difficulties and to increase the learning effect of non-computer majors who come across software for the first time. Therefore, this study examines the current state of AI based coding technologies and suggests the direction of future coding education.