퍼지 제어기를 이용한 차량의 자율주차 시뮬레이션

박재현,김승철,한창훈,박종오,임영도 東亞大學校 附設 情報通信硏究所 1998 情報通信硏究所論文誌 Vol.6 No.1

In a case of driving beginnners, it is very difficult to park a car perfectly because driver's knowledge makes more errors than intelligent mechanism when they are performed repeatedly. However skilled drivers be of experienced knowledge are able to park a car quickly. In this paper, we analyzed driving patterns of skilled drivers, designed the fuzzy controller to park based on it, and perform auto-parking simulation of a car using that controller.

1920년대 申采浩와 梁啓超의 역사연구방법론 비교 : E. 베른하임을 참고하여

박찬승(Park, Chan-Seung) 한국사학사학회 2004 韓國史學史學報 Vol.0 No.9

'Introduction' of the book 'Korean ancient history' written by Shin Chae Ho was highly influenced by Liang Qichao's(1873~1929) book 'The methodologies of Chinese history'. Shin Chae Ho borrowed many ideas and most of the organizational framework of his 'Introduction' from Liang Qichao. Shin Chae Ho dealt with the same themes that was found in 'The methodologies of Chinese history' but discussed it in terms of historical documents or events in Korea. Since Liang Qichao referred to 'Introduction to history' written by Ernst Bernheim when he wrote his book, it can be assumed that modern methodologies of western history was adopted by Shin Chae Ho in his 'Introduction'. Shin Chae Ho believed that history is a document of mental activities that develop both spatially and temporally. He emphasized the importance of objective descriptions of historical facts. He also knew the importance of explanations for causal relationship in writing history and of studies of historical records. All these reflect the influences of Liang Qichao and Ernst Bernheim on Shin Chae Ho. However, Shin Chae Ho had his uniqueperspectives as well. For example, he said that history is a struggle between 'me'(or 'us') and 'others'. He also emphasized the importance of specificities and uniqueness of each nation(Minjok). These are indications of his own 'nationalistic history'. In summary, Shin Chae Ho adopted modern methodologies in Western history from Liang Qichao and Ernst Bernheim and developed a new methodology of his own. We now call it methodology of nationalistic history.

CHLORINECELL에 의한 染色廢水의 電解處理에 관한 硏究

박정호,박승조,임찬섭 東亞大學校生命資源科學大學附設 農業資原硏究所 1996 農業生命資援硏究 Vol.5 No.1

Electrolytic treatment of dyeing wastewater by CHLORINECELL The objective this study was to investigate the feasibility for electrolytic treatment of dyeing wastewater. The experimental results are summarized as follows. 1. In case of the electrolytic treatment for dyeing raw wastewater at current density of 1.82A/㎠ and 15 minutes electrolysis duration, It was found that the COD removal efficiency and color were 31% and 280, respectively. 2. In case of the electrolytic treatment for NaCl added with dyeing raw wastewater at current density of 1.82A/㎠ and 15 minutes electrolysis duration, It was found that the COD removal efficiency and color were 59% and 230, respectively.

Rumen 微生物에 의한 製紙 슬러지의 嫌氣性消化 特性

朴勝祚,林燦燮,安尙俊 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.2

Correlation of hydrolysis rate, total solid content and Volatile fatty acid yield in anaerobic digestion of papermil1 sludge using Rumen microorganisms and conventional acidlogenesis were summarized as follows ; 1. Ultimate volatile fatty acid yield and hydrolysis rate produced by rumen microorganisms and conventional acidogenesis were about 7.2megVFA/gVS. 0.175-1 and 6.8meqVFA/gVS, 0.103d-1. Therefore, hydrolysis rate by rumen microorganisms was 1.7times faster than that of conventional acidogenesis. 2. During the operating, VFA composition ratios(%) produced by rumen microorganisms were acetate:propionate:butyrate=64=5: 27±7: 9±2. At 5,10,13 and 6.83meqVFAg/VS, respectively. 3. When effluents produced by MAR and RMR were anaerobically digested, methane yields were 0.27 and 0.29 ℓ CH₄/gCOD_(rem) respectively.

한국벤처기업의 對중국진출 성공전략

박승찬 龍仁大學校 2004 용인대학교 논문집 Vol.22 No.-

The purpose of this paper is to describe the recent trends toward Chinese technology-intensive industries, changes in Chinese technology policies, trade patterns for the better understanding of Korean firms entering into Chinese markets, Indeed, Chinese economy has highly developed over 10% annual growth rate as the results of reforming and opening polices since 1979. Also, Chinese technology markets have rapidly changed due to the concerned policies on technology transfer and technology transformation after Chinese entrance into WTO on November, 2002. Furthermore, the paper summarizes the most recent Chinese major technology policies such as Key Technical Problem Tacking Program, Spark Program, S&T Achievement Promotion Program, Hight-tech Research & Development Program, Torch Program, Basic Research Program, and so forth. Finally, the paper attempts to analyze Chinese venture firms' structures, and furnishes Korean venture firms with several alternatives to enter into Chinese markets.

가상상태 및 Backstepping 기법을 이용한 슬라이딩 모드 제어기 설계

박승규,김성환,안호균,김민찬,김명현 國立 昌原大學校 產業技術硏究院 2004 産技硏論文集 Vol.18 No.-

This paper Backstepping design with Sliding Mode Control for AC Servo Systems. The robustness of sliding mode control can be used for backstepping technique to solve the uncertainty problem. A scalar design using Lyapunov function is developed for high-order systems. The result can be easily extended to non-linear system and used with many other sliding mode control results.

Pyrimidine계 액정의 중간체 합성

박승언,이찬재 建國大學校基礎科學硏究所 1993 理學論集 Vol.18 No.-

Pyrimidine계 액정 화학물 합성 과정의 중요한 전구물질인 1-dimethylamino-3-dimethylimino-2-(4-hydroxyphenyl)propene perchlorate와 4-((S)-2-methylbutyl)Phenylamidine hydrochloride를 합성하였다. Amidinium염은 4-((S)-2-methylbutyl)acetophenone으로부터 합성하였다. Amidine염과 perchlorate염의 반응에서 얻은 pyrimidine 유도체는 편광현미경과 DSC를 이용하여 분석한 결과 강유전성을 지니는 액정 화합물임을 알 수 있었다. The two synthetic intermediates for the preparation of pyrimidine type liquid crystals, 1-dimethylamino-3-dimethylimino-2-(4-hydroxyphenyl)propene perchlorate and 4-((S)-2-methylbutyl)phenylamidine hydrochloride, were synthesized. 1-Dimethylamino-3-dimethylimino-2-(4-hydroxyphenyl)propene perchlorate was prepared from the Vilsmeier reaction of 4-hydroxypheylacetic acid, and 4-((S)-2-methylbutyl)phenylamidine hydrochloride was prepared via 4 steps from 4-((S)-2-methylbutyl)acetophenone, respectively. The pyrimidine derivatives prepared from the amidine salt and perchlorate salt showed ferrolelectric mesophases by the DSC and polarized microscopic analysis.

컨테이너 운송용 AGV의 운동궤적에 관한 연구

박정보,김민주,이승수,김중완,전언찬 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.5

In this study, we have developed the simulation tool in order to investigate driving trajectory of AGV for container transport. AGV for container transport is different from the indoor AGV in that it is a large size structure at being loaded the weight of 40 ton. And AGV for container transport is applied to front wheel steering, rear wheel steering, all wheel steering, and crap steering. Therefore, we have developed the simulation tool considering dynamic problems and a center of turning in accordance with fourth ways of steering mode. As the result of this study, we have confirmed that this tool is useful and cost-effective in the dynamic analysis or large size vehicles. Also, it is useful to calculate the minimum radius of turning for large size vehicles.

TiO₂광촉매를 이용한 페놀 제거에 관한 연구

박창식,김승건,김민찬,이상백 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.1

The experimental study on photocatalytic phenol removal was conducted by using TiO_(2) as a photocatalyst and ultraviolet(UV) ray as a light source. The effect of several variables such as the amount of photocatalyst, the wavelength of UV ray and the operation temperature and pH of reaction system on the removal efficiency of phenol was experimentally examined. Up to the concentration of photocatalyst 0.025g/L, the removal efficiency of phenol increased with the concentration of photocatalyst and beyond this concentration the reaction rate was independent of catalyst concentration. The removal of phenol was enhanced as the energy intensity was increased, that is the wavelength became shorter. It seemed that the photocatalytic decomposition of phenol prefers the basic condition and is insensitive to the operation temperature.

특성 길이를 이용한 평직 복합재 볼트 체결부의 강도 예측

박승범,변준형,안국찬 한국안전학회 2003 한국안전학회지 Vol.18 No.4

A study on predicting the joint strength of mechanically fastened woven glass/epoxy composite has been performed. An experimental and numerical study were carried out to determine the characteristic length and joint strength of composite joint. The characteristic lengths for tension and compression were determined from the tensile and compressive test with a hole respectively. The characteristic lengths were evaluated by applying the point stress failure criterion to a specimen containing a hole at the center subjected to tensile loading and a specimen containing a half circular notch at the center subjected to compressive load. The joint strength was evaluated by the Tsai-Wu and Yamada-Sun failure criterion on the characteristic curve. The predicted results of the joint strength were compared with experimental results.