http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Jun Mo (검색결과 3,224 건)
- 무료
- 기관 내 무료
- 유료
-
-
-
FDM에서 경사면의 표면과 면적오차법의 관계에 대한 연구
전재억,정진서,황영모,김수광,김준안,계중읍,하만경 한국공작기계학회 2002 한국공작기계학회 추계학술대회논문집 Vol.2002 No.-
In any rapid prototyping process, the layer by layer building process introduces an area error between the staircase and the surface line specified by the computer-aided design model. This affects the dimensional accuracy as well as the surface finish for different part build orientations. This paper describes a methodology for computing the area error for any orientation of the part built by the fused deposition modelling system. This technique can be applied to determine the best build orientation of the part, based on the minimum area error. This technique is verified by comparing the results with the experimental measurements of the area error of the parts built at different orientations.
-
김준영,김진우,조경모,박세희 大韓齒科保存學會 2012 Restorative Dentistry & Endodontics Vol.37 No.2
Objectives: This study aimed to evaluate the relationship between the cyclic fatigue of a K3 file and internal stress intentionally induced until the activation of the auto-stop function of the torque-controlled motor. Materials and Methods: K3 (Sybron Endo) .04 and .06 taper, size 25, 30, 35, 40 and 45 were used in this study. To give the internal stress, the K3 files were put into the .02 taper Endo-Training-Bloc (Dentsply Maillefer until the activation of the auto-stop function of the torque-controlled motor. The rotation speed was 300 rpm and torque value was 1.0 N·cm. K3 were grouped by the number of induced internal stress and randomly distributed to 4 experimental groups (n = 10, Stress 0 [control], Stress 1, Stress 2 and Stress 3). For measuring the cyclic fatigue failure, the K3 files were worked against a sloped glass block and time for file separation was recorded. Data was statistically analyzed Statistical analyses were performed using two-way ANOVA and Duncan post-hoc test at p < 0.05 level. Results: Except .04 taper size 30 in Stress 1 group, there were statistically significant differences in time for file separation between control and all experimental groups. K3 with .04 taper showed higher cyclic fatigue resistance than those of .06 taper. Conclusion: In the limitation of this study, the cyclic fatigue of the K3 file was influenced by the accumulated internal stress from use until the auto-stop function was activated by the torque-controlled motor. Therefore, clinicians should avoid the reuse of the K3 file that has undergone auto-stops. (Restor Dent Endod 2012;37(2):74-78)
-
정준모 신라대학교 예술연구소 2001 예술연구 Vol.7 No.-
원론적인 이야기이지만 미술관이라는 곳은 작품의 수집과 보존이 첫 번째 설립 목적이라 할 수 있다. 하지만 미술관은 이러한 의미 외에도 많은 의미를 가지고 있다. 예전에 유럽에서의 미술관들은 전쟁에서 남편이나 자식을 내 보낸 여성들의 기다림과 그들의 희생을 정당화, 합리화하는 방편으로도 설립되었다. 전쟁에서의 승리를 확인시켜주는 동시에 전리품을 통해서 그 전쟁에서 희생된 가족들의 죽음이 결코 헛되지 않았다는 것을 널리 알릴 수 있는 자리가 되었던 것이다.
-
다이나믹 CMOS PLA의 고장검출을 위한 내장 테스트
정준모 서경대학교 1998 論文集 Vol.26 No.-
In this paper built-in test for fault detection of dynamic CMOS PLA is proposed. In the proposed built-in test by proposing the BILBO which can generate initialization patterns and test patterns to detect faults in dynamic CMOS circuit, the testble design for dynamic CMOS PLA, which was difficult in the past because of the problem for detection of stuck-open faults in dynamic CMOS circuit, can be realized easily. And a robust test can be accomplished regardless of input transition skew as the test sequences are generated in consideration of Hamming distance of initialization pattern and test pattern, in addition the length of test sequence is reduced by considering the regular structure of CMOS PLA. And the signal at normal operation can not propagate through BILBO, therefore the problem of signal delay caused by BILBO is solved.
-
정준모 서경대학교 1996 論文集 Vol.24 No.-
본 논문에서는 전류 테스팅 기법을 이용하여 CMOS회로의 고장 검출 및 위치 결정을 보다 효율적으로 할 수 있는 구조를 제안한다. 기존의 방법에서는 정상 상태 전원 전류에 대한 관찰점이 하나였으나, 제안하는 방법에서는 정상 상태 전원 전류를 두 곳에서 관찰하여 결함으로 인한 과도한 전류가 흐르는 경우를 각각 Vdd에서 입력, 입력에서 GND, 그리고 Vdd에서 GND로 흐르는 경우로 나누어 생각함으로써 고장 검출 및 위치 결정에 유리하도록 보다 많은 고장 부류로 나누어 준다. 또한, 이 구조가 기존의 전류 테스팅 기법으로는 테스팅이 용이하지 않았던 stuck-open 고장 검출에도 쉽게 적용될 수 있음을 보인다. 제시하는 방법에서는 부가 트랜지스터를 이용하며, 정상 상태에서는 전류 경로가 형성되지 않는 CMOS회로에 강제로 전류 경로가 형성되도록 하고, 만일 stuck-open 고장으로 이 경로가 없어지게 되면 해당 전류 경로에 있는 MOS 트랜지스터에 stuck-open 고장이 있음을 알게 된다. 고장을 인가한 회로에 대하여 spice 시뮬레이션을 하고, 트랜지스터 단락 모델을 이용하는 전류 경로 탐색 프로그램을 SUN Sparc Workstation에서 C 언어로 작성하여 전류 경로 탐색 실험을 함으로써, 제안하는 구조의 타당성과 효용성을 입증한다. In this paper a structure that can detect and locate faults in CMOS circuits more efficiently using current testing techniques is proposed. In the conventional method, the observation point of power supply current for stead state was only one, but in proposed method more fault classes are divided for fault detection and location through the observation of power supply current at two points. Also, it is shown that this structure can be easily applied in detection of stuck-open fault which is not easy to test circuits with conventional current testing techniques. In the presented method, a extra transistor is used, and current path is made compulsorily in the CMOS circuits in which no current path can be established in steady state, then it can be known that stuck-open fault is in the MOS transistor on the considering current path, if this path disappears due to stuck-open fault. Through the spice simulation of fault circuits and the experiment using the program of current path search based on transistor of short model written in C language on SUN Spark workstation, the validity and effectiveness is shown.
-
-
김준모,최연선 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.1
The dynamic characteristics of friction-induced vibration are investigated. The value of friction coefficient depends on material, relative velocity, and normal force. As a result, the governing equation of a mechanical system including friction effect is inherently nonlinear. In this research, friction-induced vibration characteristics of automotive brake lining pad are investigated by experiments and numerical simulation. The measured responses of pin-on-disk type apparatus which was designed and made for this research show limit cycles of quasi-harmonic vibrations and beating phenomena with the variation of the operation speed and the normal force of the system. Friction coefficient curve which depends on relative velocity was obtained by using Lienard method. Numerical integration was also performed by using the fitted friction coefficient curves. The numerical results of calculated amplitudes and mean displacements show good agreements with those of experiments. Throughout this research, most of the experimentally observed phenomena in friction-induced vibration were successfully explained theoretically and numerically.
-
경험적 분류 모델을 이용한 객체지향 데이터베이스 시스템의 설계
김준모 기전여자대학 1999 論文集 Vol.19 No.-
경험적 분류 모델을 이용한 새로운 객체 지향의 데이터 모델을 제시한다. 이와 같은 모델 설정을 위해 경험 추론 클래스를 도입하였으며, 이 클래스들을 연산하기 위한 경험 추론 연산 클래스를 설계하였다. 또한, 확장된 객체 지향의 데이터 모델하에서 정보의 검색과 변경을 위한 질의어 형식을 제시하였고, 이를 처리하기 위한 모듈을 설계 하였다.
DBpia연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
