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Ho dealt with the same themes that was found in 'The methodologies of Chinese history' but discussed it in terms of historical documents or events in Korea.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.

ADP에 의해서 활성화된 혈관평활근 세포의 증식에 관여하는 Integrin의 종류와 신호 전달 경로

박찬복,이지현,류종철,차태준,주승재,이재우 고신대학교 의학부 2004 高神大學校 醫學部 論文集 Vol.19 No.1

Background: Adenosine diphosphate(ADP), which is usually secreted from activated platelets activates integrin αvβ3. αvβ5, and α5β1 on human vascular smooth muscle cells. Integrins have an important role in the proliferation of vascular smooth muscle cells. ADP may stimulate the proliferation of vascular smooth muscle dells by the activation of integrins. Integrins mediating ADP-stimulate the proliferation of vascular smooth muscle cells and signal transduction pathway of ADP stimulation were investigated in this study. Methods: MTT(3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) assay was used to evaluate ADP or ATP-stimulated proliferation of human aortic smooth muscle cells (HASMC). In some experiments, HASMC were incubated with U73122, an inhibitor of phospholipase C, or monoclonal antibodies (mAb) to integrins after ADP of ATP stimulation. Results: ADP and ATP increased the proliferation of HASMC in a dose-dependent manner. U73122 inhibited ADP or ATP stimulated proliferation of HASMC ADP-stimulated proliferation of HASMC was inhibited either by c7E3, a blocking mAb to integrin β3 or by LM609, a blocking mAb to integrin αvβ3(37% and 26% inhibition, respectively: p<0.05), but neither by P1F5, a blocking mAb to integrin αvβ5 nor by JBSS, a blocking mAb to integrin α5β1. Conclusion: These results indicate that ADP increases the proliferation of human vascular smooth muscle cells through phospholipase C pathway, and only integrin αvβ3 mediates ADP-stimulated proliferation of human vascular smooth muscle cells.

뇌경색후 발생한 Cortical Spreading Depression과 뇌경색 범위에 관한 실험적 연구

박윤관,이승민,김세훈,이기찬,주정화,이훈갑 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.3

Cortical Spreading Depression(CSD) is a transient depression of neuronal activity that spreads across the cortical surface and is associated with profound changes in blood flow, extracellular ion concentration. Direct Current(DC) potentials and cell membrane potentials. One of the electrophysiological disturbance in the periinfarct surrounding is spontaneous occurrence of repeated CSD like DC shifts associated with increased energy demand. Due to restricted blood flow to the periinfarct border zone, elevated metabolic demand is potentially harzardous. So the authors designed this experiment to verify the correlation between periinfarct cortical spreading depression and ischemic volume following permanent middle cerebral artery (MCA) occlusion in rats. Sprague-Dawley rats(n=27) were anesthetized with 0.5∼1% halothane, and artificially ventilated through a tracheal cannula. Arterial pressure, blood gases and body temperature were controlled. The middle cerebral artery(MCA) was occluded distally to the lenticulostriate branches. Measurements of CSD activity were made for 4 hours in each animal. Infarct volume was determined 6 hours later in 2, 3, 5-triphenyl tetrazolium chloride(TTC)-stained sections. For 4 hours after MCA occlusion, the CSDs were found in all experimental animals with a range of 2∼9 times. Those CSDs wer of varying duration, : "small"(<1 min) and "big"(> 1 min) SDs and mean of total duration of SD was 10.5±10.3 min during 4 hours of MCA occlusion. Neuropathological evaluation of brain infarct in the rats, which had been allowed to survive for 6 hours after MCA occlusion showed a mean volume of 89.7±45.3㎣. Serial observation of duration of CSD showed progressive prolongation only in 8 rats. The rest of them(n=19) did not show any prolongation. Neither the prolongation of duration of CSD nor the frequency of CSD in the penumbral zone correlated with the volume of infarct. However total duration of CSD was slightly related with the infarct volume after 6 hours of the permanent MCA occlusion(r=0.414, p=0.0318).

필기체 숫자인식의 최적 신경망 구조 설계를 위한 개선된 유전자 알고리즘

박찬란,김향태,정재영,위승정,최봉한,최호진,이웅기 조선대학교 통계연구소 1999 統計硏究所論文誌 Vol.1 No.1

본 논문에서는 필기체 숫자인식의 최적 신경망 구조 설계를 위하여 유전자 알고리즘과 역전파 알고리즘을 병합하는 방법을 이용하였으며, 유전자 알고리즘은 유전인자의 역할에 따라 독립적으로 적응하는 개선된 선택, 교배, 돌연변이 연산자를 제안하였다. 실험결과는 유전인자의 역할에 적응하는 개선된 연산자들의 실행으로 최적의 신경망 구조를 설계하였고, 설계된 신경망 구조에서의 학습이 가장 좋은 성능을 나타내었다. In this study, the method of using both genetic algorithm and back propagation is proposed to design the structure of optimal neural network recognizing handwritten digits. Improved selection, crossover and mutation operator which can control the genetic algorithm independently according to the role of gene are used in the proposed method. Simulation result shows that the neural network of this method can search effectively the optimal hidden node numbers, connection weight, learning rate and the momentum because of above proposed operators.

베르까우어의 교회론에 나타난 보편성 연구 : 연속성과 경계의 개념 중심으로

박승찬 Torch Trinity Graduate University 2022 Torch Trinity Journal Vol.25 No.1

Berkouwer investigates the catholicity of the church in his major work on ecclesiology – De Kerk I, II(1970, 1972) - in light of the centrality of the gospel and the correlation between revelation and faith. In his critical examination of ecclesiological discourses, he presupposes the preceding position of the Holy Spirit in relation to the church in credo ecclesiam. The focus of this research is on the boundaries and continuity of the church, as they are deemed to be the central pieces of Berkouwer’s account of catholicity. The way in which he critically overcomes an abstracted and formal manner of theologising and explicates the boundaries and the continuity as a dynamic reality is analysed and examined. Lastly, the article suggests a room for compensatory contribution to Berkouwer’s thought by means of the concept of concurrence. 베르까우어는 그의 커리어 후기에 작성한 교회론(De Kerk I, II)에서 교회의 보편성을 복음의 중심성과 계시와 믿음의 상관관계의 원리를 통해 조명한다. 그는 신앙고백(credo)이 상정하는 교회에 대한 성령의 선재성을 전제로 하고, 은사와 부르심이라는 구체적이고 역동적인 관점을 통해 여러 전통적 명제들에 대한 담론을 비평적으로 검토한다. 이 논문은 베르까우어의 보편성에 대한 담론 중 핵심적인 요소인 경계와 연속성에 대해 탐구한다. 이에 대해 그가 전개한 주요 논점들을 제시하고 그가 어떻게 추상화 또는 도식적 고정화를 통한 접근을 비평적으로 극복하고 그리스도의 복음이 시사하는 역동적 실제로서의 경계와 연속성을 설명하는지에 대해 살펴본다. 또한, 보편성에 대한 그의 논의가 가진 약점을 분석하고 동시성(concurrence) 개념을 통한 보완적 방향성을 탐색한다.

中溫 嫌氣性 消化에 의한 屠殺場 廢水處理

박정호,임찬섭,최장승,박승조 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

Slaughterhouse wastewater containing high ammonium ion concentration and organic matter was treated by upflow anaerobic sludge blanket(UASB) reactor. As organic loading rate(OLR) was increased from 0.25㎏COD/㎥·day to 8.0㎏COD/㎥·day, COD removal efficiency was about 80 percent. But in case of OLR increased up to 8.0 ㎏COD/㎥·day, organic removal efficiency was decreased. In case of OLR was increased from 0.25㎏COD/㎥·day to 8.0㎏COD/ ㎥·day and ammonium loading rate was increased from 0.02 ㎏ NH₄^(+)-N/㎥·day to 0.62 ㎏ NH₄^(+)-N/㎥·day, effluent ammonium ion concentration was decreased from 1800㎎/l to 720㎎/l. Biogas production was increased form 0.248 ㎥/㎏COD_(rem) to 0.280 ㎥/㎏COD_(rem) in case of OLR was increased from 0.25 ㎏COD/㎥·day to 6.0 ㎏COD/㎥·day. Methane, carbon dioxide and ammonia gas content were 49%, 49% and 2.0% respectively in initial OLR was 0.25 ㎏COD/㎥·day but ammonia gas does not produced in case of OLR was increased up to 4.0 ㎏COD/㎥·day. In proportion to decrease hydraulic retention time, MLSS concentration in upflow anaerobic sludge blanket reactor was increased.

자궁경부암종에서 신생혈관 형성과 증식세포 핵항원 및 Ki-67 표지지수의 예후적 의의

박찬필,박문향,이승연 대한병리학회 1997 Journal of Pathology and Translational Medicine Vol.31 No.1

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.

유도 전동기의 H∞강인제어에 관한 연구

박승규,김민찬 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

In this paper, a speed control of non-servo induction motor is considered. In this case, it is difficult to satisfy precise control performance. So H∞robust controller is designed for this problem by using polynomial approach and Youla parameterization.