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박진호,이장무,조한상,공진형,박영일,Park, Jin-Ho,Lee, Jang-Mu,Jo, Han-Sang,Gong, Jin-Hyeong,Park, Yeong-Il 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.4
Actual and strict definition of the shift quality for the powertrain system equipped an automatic transmission must be understood through the acceleration change of the vehicle body, which the driver directly feels as a shift shock. For this reason, it is necessary to concurrently analyze the characteristics of the powertrain system and the vehicle body. This paper presents the mathematical model of the vehicle body, which is based on the equivalent lumped system, to append to the developed model of the powertrain system. The concept of tire slip is also introduced for the experimental relationship between tire/road and driving force. Using the developed dynamic simulation programs, shift transients characteristics are analyzed. Theoretical results are compared with experimental ones from real car tests in equal conditions in order to prove the validity of presented model. In these tests, the system to measure the vehicle acceleration is used with various speeds and engine throttle sensors. It is expected that the presented modeling techniques can provide good predictions of the vehicle driving comfortability.
박진호,김정훈,현창택,김현주,권석현,Park, Jin-Ho,Jin, Zheng-xun,Hyun, Chang-taek,Kim, Hyun-joo,Kwon, Suk-hyun 한국건설관리학회 2018 건설관리 : 한국건설관리학회 학회지 Vol.19 No.5
발주자, 건설사업관리자, 설계자, 시공자, VE 전문가 등 참여자 역량에 의해 성패가 좌우되는 VE 프로젝트에서는 체계적인 절차를 따르는 것이 중요하다. 하지만, 실제 VE 업무에서는 개략평가만을 실시하거나, 개략평가와 상세평가를 통합하여 수행하는 경우가 있다. 이러한 경우, 중요한 대안일지라도 리스크에 대하여 평가하는 것이 어렵다. 이에 따라, 선행단계에서 제안된 대안이 후행단계에서 다시 기존안으로 돌아가는 회귀제안(returning alternatives)이 발생하여, 해당 대안에 대한 반복작업으로 인해 VE 업무효율이 저하되는 경우가 종종 발생한다.이에 본 연구에서는 VE 대안을 구체적으로 분석하고 체계적으로 평가하여 회귀제안 발생을 최소화하기 위해, VE 대안의 리스크 평가절차(risk assessment process for VE alternatives)를 제안하였다. 이는 VE 대안을 구체적이고 체계적으로 평가하여 회귀제안을 최소화하기 위한 평가절차로서 의의가 있으며, 회귀제안에 대한 반복업무를 줄임으로써 VE 업무의 효율을 높일 수 있을 것으로 예상된다. Since the success or failure of VE projects depends on the capabilities of participants, including owners, construction managers, architects, general contractors and VE experts, it is important to follow systematic procedures. However, it is often the case that only a rough evaluation is performed, or the rough and detailed evaluations are integrated in actual VE tasks. In this case, it is difficult to analyze and evaluate the alternatives in terms of risk, even for the important alternatives. This in turn leads to the so-called returning alternatives where the alternatives proposed in the preceding stage are returned to the original plans in the following stage, and thus the repetitive work for the alternatives often decreases the efficiency of the VE task. In this regard, this study proposed a risk assessment process for VE alternatives in order to minimize the occurrence of returning alternatives based on the systematic analysis and evaluation of VE alternatives. It will increase the efficiency of VE tasks by reduces the number of regression alternatives.
박진호,김홍락,김경일,이다빈,Park, Jin-Ho,Kim, Hong-Rak,Kim, Kyoung-Il,Lee, Da-Been 한국인터넷방송통신학회 2022 한국인터넷방송통신학회 논문지 Vol.22 No.5
Infrared scenes usually contain also spectral information which cannot be resolved using normal single-band infrared cameras. Multispectral infrared imaging cameras give access to the comprehensive information contained within infrared scenes. A Dual-band infrared Camera, a type of multispectral infrared imaging cameras, has the advantage of simple system. A Dual-band Infrared Camera gives access to the spectral information as wells as the temperature information within infrared scenes. Multispectral imaging generally increases the detection and identification performance of a Dual-band Infrared Camera. This paper describes a design of an infrared Camera using a Dual-band Infrared Detector to simultaneously receive infrared radiation from the medium-wave infrared/long-wave infrared(MWIR/LWIR) bands.
주택 경기 부진과 화복을 위한 정부의 노력 - 영국, 올해부터 첫 주택 구입자에게 주택 자금 30% 지원
박진호,Park, Jin-Ho 한국주택협회 2008 주택과 사람들 Vol.224 No.-
글로벌 신용 경색의 한파로 유럽 주택 시장도 급격히 냉각되고 있다. 이에 따라 유럽 각국에서는 주택 구입 수요를 늘리기 위해 다양한 대책을 내놓고 있다. 최근 유럽 주택 시장의 현황을 짚어보고, 경기 활성화를 위해 각국 정부는 어떠한 대책들을 내놓고 있는지 살펴보자.
박진호,정태화,조용식,Park. Jin-Ho,Jung. Tae-Hwa,Cho. Yong-Sik 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1
There are many studies about submerged structures or porous wave absorbers to decrease damage of coast and structures. Submerged structures and porous wave absorber are decreasing energy of incoming wave by reflecting or dissipation with changing depth or with porous rubble mound. This study addresses the reflection and transmission of long wave from a trapezoidal breakwater and a vertical porous wave absorber at the same time. A systematic shape transfer is derived to determine wave reflection and transmission. And periodic solutions are matched at the slope and the front face of the absorber by assuming continuity of pressure and mass. The transmission coefficient is determined as a function of parameters describing the incoming waves, transmitting waves through the trapezoidal breakwater and the absorber characteristics.