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이정하(Lee Jung Ha),박태원(Park Tae Won) 도시정책학회 2018 도시정책학회 학술대회 Vol.2018 No.1
Since the Constitutional Court ruled in July 1999 that the private urban planning facilities were subject to the violation of private property rights, the government has adopted a sunset system for urban parks. While the private business owner s size of urban parks was lowered from 80 % to 70 % in 2014, the cause of the controversy over the project was changed from 100,000㎡ or more in total urban parks to 50,000㎡ or more. Therefore, this study analyzes the causes of failure in the public park formation projects based on the cases in which conflicts are emerging in analyzing similar systems abroad and promoting projects, and analyzes the causes of failure through related experts and surveys. In addition, the causes of conflicts are different, local sentiments and development conditions are different, and the limit of urban park management and response plans for future urban urban planning based on projects focused on the business feasibility and retrofittibility are limited, and urban park plans are less than 50,000㎡.
Cu를 함유한 저합금 고장력강의 기계적 성질에 미치는 열처리의 영향
박태원,심인옥,김영우,강정윤,Park, Tae-Won,Sim, In-Ok,Kim, Yeong-U,Gang, Jeong-Yun 한국재료학회 1995 한국재료학회지 Vol.5 No.3
Cu를 함유한 2종의 저합금 고장력강(HSLA-A, HSLA-B)\ulcorner 기계적 성질에 미치는 시효처리의 영향을 조사하였다. 탄소량이 적음에도 불구하고 Cu첨가로 석출물을 생성시킴으로서 2합금 모두 $650^{\circ}C$에서 시효한 경우 양호한 강도(HSLA-A:Y.S 703Mpa, E.L 22.6% HSLA-B:Y.S 810 Mpa, E.L 23.8%)와 인성(HSLA-A:271.4J, HSLA-B:197.5J at -5$0^{\circ}C$)의 조합을 나타내었다. 50$0^{\circ}C$에서 시효할 때 가장 높은 항복 강도를 나타내나 인성은 아주 낮은 값을 나타내었다. 50$0^{\circ}C$이상 시효 온도가 증가하면 강도는 감소하고 인성은 증가하였다. HSLA-B강의 강도가 HSLA-A 강보다 높은데, \ulcorner칭 상태에서의 강도 차이는 경화능을 증가시키는 원소인 Ni, Mn, Mo, Cu의 첨가량 차이에 의한 기지 조직의 차이에 의한 것이며, 시효한 상태에서의 강도 차이는 기지 조직과 석출 강화에 기여하는 Cu량의 차이에 의한 것으로 판단된다. 시효 경화 곡선에서 $700^{\circ}C$에서의 경도 증가는 오스테나이트-페라이트 2상 영역으로부터 냉각시 생성된 “M-A constituents”에 의한 것이다. HSLA-A강과 HSLA-B강의 충격 천이 온도는 각각 -1$25^{\circ}C$와 -145$^{\circ}C$이었다.
열분석법에 의한 Al-2,1Li-2.9Cu합금의 석출현상에 미치는 In 첨가의 영향
박태원,송영범,이용윤 ( Tae Won Park,young Beum Song,Yong Yun Lee ) 한국열처리공학회 1997 熱處理工學會誌 Vol.10 No.4
A study was conducted to examine the effects of In addition on the precipitation behaviors of Al-2.1Li-2.9Cu alloy by differential scanning calorimetry, transmission electron microscopy and microhardness tester. DSC analysis was measured over the temperature range of 25∼50℃ at a heating rate of 2∼20℃/min. The heat evolution peaks due to the formation of GP zone and δ` phase shift to higher temperature and the peaks to T₁and θ` phases shift to lower temperature by In addition. From this result, it was proved that the formation of GP zone and δ` phase is suppresed whereas that of T₁and θ` phases are accelerated by the In addition of 0.15wt%. The age hardening curve aged at 190℃ showed that the In bearing alloy(alloy B) has more faster age hardening response and a higher peak hardness than In-free alloy(alloy A), attributed to the fine and homogeneous distribution of T₁and θ` phases. The activation energies for the formation of δ`phase in In-free and In-bearing alloys are 22.3㎉/㏖ and 18.6㎉/㏖, respectively. Those for T₁(+θ`) phase of In-free and In-bearing alloys are 24.3 and 37.5㎉/㏖, respectively. Quenched-in excess vacancies play an important role to the formation of precipitates.
박태원,권혁춘,Park Tae Won,Kwon Hyuck Choon 대한영상치의학회 1971 Imaging Science in Dentistry Vol.1 No.1
Authors observed a rare case of tatal anodontia. The patient was 4 years old boy whoes roentenologic aspects of bone pattern was decreased in trabeculation and there was not tooth and tooth like substances. It was supposed that the cause of this disease was endocrine dysfunctions in his childhood.
파라메트릭 기법을 사용한 로봇링크 설계변경의 일괄처리 적용연구
박태원,문하경,정일호,서종휘,김혁,최용원,최재락,Park Tae Won,Moon Ha Kyung,Jung Il Ho,Seo Jong Hwi,Kim Hyuk,Choi Yong Won,Choi Jae Rak 한국시뮬레이션학회 2005 한국시뮬레이션학회 논문지 Vol.14 No.1
We developed the module of the software that robot designers can perform their work faster and more easily. The parametric modeler is founded on the virtual robot design program. The virtual robot design program is the powerful software which may be used to solve various problems of robot kinematics and dynamics. The parametric modeler in the software we developed is that all the positions of joints and links are changed automatically when the designer changes one joint or one link in the robot system. Without parametric method, robot-designers must change all the positions of connected joints and links. It might become time-consuming. However, it is very efficient for designers to use the method of batch-processing in performing design-changes of robot-links using the parametric modeler.
박태원,Park Tae Won 대한영상치의학회 1976 Imaging Science in Dentistry Vol.6 No.1
The author had observed 48 cases diagnosed as oral malignancies of the patients who visited to the infirmary of Dental College of Seoul National University from 1973 to July 1976. The following results were obtained. 1. 5 decades age group showed the highest incidence and there was hardly difference in sex. 2. From the histopathological view point, most of cases were squamous cell carcinoma. 3. Most of cases were considerably in advance and showed the bony destruction not only primary site, but of surrounding structures.
박태원,이상래,Park Tae Won,Lee Sang Rae 대한영상치의학회 1973 Imaging Science in Dentistry Vol.3 No.1
The authors have interpreted one patient's full mJuth intra-oral films, oblique- lateral film of the left mandible and orthopantomograph which revealed 6 radicular and 1 residual cysts. As a results of interpretation of these serial films, we have drawn following conclusions: 1. Radicular cyst arose from the cell rests contained in an apical granuloma which was sequel to advanced pulpitis due to dental caries. 2. Residual cyst was developed from remaining cell rests after the extraction of a tooth with such a radicular cyst or apical dental granuloma. 3. Cyst grew in size by absorption of fluid into cystic cavity due to difference in osmotic pressure between the cystic fluid and adjacent tissue fluid.