도심 차량통행 제한구역 설정을 위한 보행자 특성분석 및 유입모델 수입방법

김형철,정무용,유환 대한건축학회 1984 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.4 No.2

도덕교육 방법으로서 ‘해석학적 대화학습’에 대한 이해

김형철 한국도덕교육학회 2004 道德敎育硏究 Vol.15 No.2

This paper is the research into the meaning about 'Hermeneutic Dialogue Learning'. The deep analysis has been attempted at it. It ultimately insists that the dialogue learning should be taken as the alternative for an educational method. The dialogue learning can cause some change in an education field because dialogue changes mind attitude as well as one's thought. Man is a linguistic being, so dialogue learning is essential. The dialogue learning makes it possible for a teacher and a student to meet personally. It is not the traditional behavioristic view of education. It is the learning of interacting between life and knowledge. This kind of attitude can be made out in a hermeneutic cycle. Accordingly dialogue requires an open attitude. This approach is sure to change an educational field desirably. 본 글은 ‘해석학적 대화학습’의 의미지평에 대한 이해를 시도하였다. 이것은 도덕윤리교육은 앎과 삶을 소통시킬 수 있는 현실적 대안이 절실하고 이러한 요구와 방법을 대화학습의 의미에서 찾아보고자 하였다. 즉 하나는 교육방법에 시사하는 해석학적 입장, 둘은 대화학습의 교육적 의미, 셋은 대화학습의 전개과정을 알아보는 것이다. 이는 도덕교육 방법으로서 대화학습이 활성화되어야 한다는 당위성을 확인하려는 시도이었다.

TiO2-30wt.%SrO 나노 복합분체의 합성과 광촉매 활성 평가

김형철 한국특허학회 2007 특허학연구 : 한국특허학회지 Vol.9 No.4

나노크기를 갖는 TiO2-30wt% SrO 복합분체는 졸-겔법을 이용하여 합성하였다. 합성된 무정형의 TiO2-30wt% SrO 복합분체는 750 oC에서 아나타제-TiO2로 결정화되었다. 하소 온도를 증가시킴에 따라아나타제-TiO2 결정상은 900 oC에서 루타일-TiO2로 상변태 하였으나 SrTiO3 상이 측정되었다. 1050 oC에서 하소한 후 얻어진 피이크는 주상으로 루타일-TiO2와 SrTiO3 상으로 나타났다. 하소온도에 따른 광촉매 효율을 측정하기 위해서 페놀의 감소율을 TiO2-30wt% SrO 복합분체로 측정하였다. TiO2-30wt% SrO 복합분체는 페놀의 광산화반응에 의해서 우수한 광촉매 효율을 보였다. Nano-sized TiO2-30wt% SrO composite powders were synthesized by a sol-gel method. The as-received amorphous TiO2-30wt% SrO composite powders were crystallized with anatase TiO2 at around 750 oC. As calcination temperatures increased, the anatase TiO2 crystalline phase was transformed to rutile TiO2 at about 900 oC, whereas SrTiO3 phase was detected. The peaks obtained after calcining at 1050 oC mainly exhibited the rutile TiO2 and SrTiO3 phases. For the comparison of photocatalytic activity depending on calcination temperatures, TiO2-30wt%SrO composite powders were tested in phenol degradation. TiO2-30wt% composite powder showed a good photoactivity for the photo- oxidation of phenol.

담성산통으로 오인된 우측 십이지장주위 탈장

김형철 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.9 No.2

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연속섬유강화 플라스틱 복합재의 압축성형에 있어서 확대/축소 점도비를 고려한 유동해석

김형철,채경철,조선형,김이곤,Kim, Hyeong-Cheol,Chae, Gyeong-Cheol,Jo, Seon-Hyeong,Kim, Lee-Gon 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.3

To obtain an excellent product and decide on optimum molding conditions, it is important to establish the relationship between molding conditions and viscosity. The composites is treated as a pseudoplastic fluid, and the expansional/contractional viscosity of the fiber-reinforced polymeric composites is measured using the parallel plastometer, and the model for flow state has been simulated with the viscosity. The effects of expansional slip parameter $\alpha_{e}$, and expansional/contractional viscosity ratio ${\mu}_{\gamma}$, on the mold filling parameters are also discussed.

계층적 망구조에서의 분산 경로 설정 방안

김형철,홍충선,이대영 한국통신학회 2000 韓國通信學會論文誌 Vol.25 No.5

ATM망에서 방대하고 다양한 자료를 신뢰성있게 전송하기 위해서는 경로설정 문제는 매우 중요한 요소 중의 하나이다. 그러므로 소스에서 목적지까지의 노드사이의 가능한 경로들 중 최적의 경로를 선택하는 문제에 대하여 많은 연구가 이루어 지고 있다. 특히 대규모 망으로 확장 가능하게 하는 계층적인 망구조를 가진 망에서 장애 발생 시, 기존 PNNI 라우팅에서 결정되는 복구 경로는 그룹내의 전체 점유율을 고려하지 않음으로써 그룹내의 경로 설정 시 트래픽의 집중현상이 발생하는 경우가 있다. 그러므로 계층적으로 구성된 네트워크에 대한 복구를 위하여 복구 경로 설정 시 소스와 목적노드를 동시에 포함하는 최상위 계층에서 먼저 각 그룹의 리더노드에 의해 보고된 그룹 내 평균점유율을 고려한 그룹간 경로를 설정함으로써, 기존의 PNNI라우팅 알고리즘 보다 트래픽의 집중을 최소화 할 수 있는 알고리즘을 제안한다. The Problem of allocating paths is very significant in order to transmit a large amount of various data on the ATM network. Therefore, selecting an optimal path among available paths between the a source node and a target node has been researched. Alternate paths designed in previous PNNI routing is not considered on the group-occupation so that traffic congestion happens, when errors occur in the network which consists of a hierarchical network architecture extendable to a large network, We propose the Top-Down algorithm considering an average of the occupation among the groups reported from a leader node in each group and minimizing a traffic congestion

한우 거세우에 있어서 생체단층조사기법에 의한 육질판정과 도축 육질 측정치와의 관계

김형철,이득환,최성복,전기준 한국동물자원과학회 2003 한국축산학회지 Vol.45 No.2

Data from live animal real time ultrasound (RTU) measures from 127 Hanwoo steers were used to assess nutritional physiology and relationship between RTU measures and real carcass measure represented meat quality. Traits considered were longissimus muscle area, fat thickness, and marbling score imaged and scanned using RTU by month and those of carcass measures at about 24 month of age. On this study, increasing pattern for longissimus muscle area would be closely related to growth pattern (P<0.01) and it of fat thickness would be related to quadratic effect of ages. Marbling score would be related to aging, that is, individual deviates of scores were distinctly characterized after 17 mo. even though they were started at about 11 mo. Correlation estimates between RTU measures and corresponding carcass traits were over 0.6 after 17 month of age for all traits considered and these estimates were high as 0.90 after22 month of age. From this study, Real-time ultrasound measurement would be valuable after 15~17 mo. and measures at about 22 mo. would be helpful to decide age for slaughtering. To utilize these techniques for beef cattle breeding via progeny testing program, 15 mo. RTU measures would be efficiency rather than 12 mo. of other beef breeds. Further study to find genetic variation of RTU measures was needed to utilize these technologies for beef breeding.

도덕적 상상력을 위한 서사교육접근

김형철,이미식,최용성 부산교육대학교 초등교육연구소 2001 초등교육연구 Vol.16 No.-

There is a common misapprehension that those educating who value rationality as an aim necessarily ignore the aims of educating people in respect of imagination. conversely, conceps such as imgiation, creativity, and morality are logically tied up with rationality. A Curriculum concerned with the development of moral imagination therefore has to involve those subject matters in which we are particularly concerned to see imagination displayed and those that are most likely to foster the imaginative spirit or disposition by opening up the mind to the variety and complexity of human experience. The narrative education for moral imagination to nurture a lively application of possibilities, and the narrative education is to present the possibilities of tradition as ways of enriching people's lives rather than as pre-established rigid patterns imposed upon reluctant individuals. After all, this study is an inquiry into narrtive the primary form by which human moral experience is made meaningful. And the aim of the study of narrative is make explicity the operations that produce its particular meaning, and to draw out the implications this meaning has for moral imagination. So teachers should deal with the domains such moral imagination, creativity as well as the cognitive domains such a moral knowledge and judgment. In order to facilitate students' moral imagination, teachers should use various narrative materials relevant to a particular content and select appropriate narrative teaching methods.

벡터양자화를 위한 FNNPDS 인코더의 VLSI 설계

김형철,심정보,조제황,Kim Hyeung-Cheol,Shim Jeong-Bo,Jo Je-Hwang 대한전자공학회 2005 電子工學會論文誌-SD (Semiconductor and devices) Vol.42 No.2

We propose the design method for the VLSI architecture of FNNPDS combined PDS(partial distance search) and FNNS(fast nearest neighbor search), which are used to fast encoding in vector quantization, and obtain the results that FNNPDS(fast nearest neighbor partial distance search) is faster method than the conventional methods by simulation. In simulations, we investigate timing diagrams described searching time of the nearest codevector for an input vector, and compare the average clock cycles per input vector for Lena and Peppers images. According to the result of simulations, the number of the clock cycle of FNNPDS was reduced to $79.2\%\~11.7\%$ as compared with the number using the conventional techniques. 벡터양자화에서 고속 인코딩에 사용되는 기존 방법인 PDS(partial distance search)와 FNNS(fast nearest neighbor search)를 결합한 FNNPDS(fast nearest neighbor partial distance search)를 VISI로 구현하기 위한 설계 방법을 제안하고, 모의실험을 통해 FNNPDS가 다른 방법에 비해 보다 고속화가 이루어짐을 입증한다. 모의실험 방법은 임의의 입력벡터에 대해 최단거리 부호벡터를 찾는 타이밍도를 고찰하고, Lena와 Peppers 영상에 대한 입력벡터당 평균 클럭 사이클을 비교한다. 모의실험 결과에 의하면 FNNPDS의 클럭 사이클 수는 다른 방법들보다 $79.2\%\~11.7\%$ 감소되었다.

고속 탐색 방법에 의한 부호책 생성 알고리즘

김형철,조제황 대한전자공학회 2004 電子工學會論文誌-SP (Signal processing) Vol.42 No.2

고속 부호책 생성 방법들로서 기존의 대표적인 기법들에는 PDS, FNNS, 그리고 FC가 있다. 본 논문에서는 코드북을 설계하기 위해 기존의 방법들을 통합한 FCNNPDS를 제안한다. 모의실험 결과 FCNNPDS의 계산양이 기존의 방법들보다 약40-95% 감소되는 것을 보인다. 그러나, 비교 계산은 벡터의 차원 k와 관계가 없으며, 이것은 비교의 계산양이 다른 계산들보다 훨씬 적어지는 이유이다. 그래서 FCNNPDS는 기존의 방법들보다 가장 좋은 방법이다. The conventional typical techniques as fast codebook generation methods are PDS, FNNS, and FC. In this paper, we propose FCNNPDS integrated the conventional methods to generate a codebook. The results of simulations show that the computational magnitude of FCNNPDS is reduced to 40-95% lower than conventional techniques. But comparison computation has no relation with k dimension of vectors, that is, because the computational magnitude of comparison is smaller than others, therefore FCNNPDS may be the best method than the conventional methods.