소프트웨어 컴퍼넌트 재구축을 위한 개념 인식 및 정제

현창문,한은주,남혜영,김행곤 대구효성가톨릭대학교 응용과학연구소 1995 응용과학연구논문집 Vol.4 No.-

Most of present-day information system have been in use for a long time. They have been developed using the system development methods, programming tools data base hand-less. Even if the systems are adapted to chagned requirements from the surrounding world, the basic structure and the original technical and methodological ties have been retained. Our goal is to show how an object-oriented development method can be used to grandu-ally moderning an old system. We do this by showing how object-orientd reengineering method solve the software maintainability.

Monomeric methyl methacrylate가 家兎의 心血管에 미치는 影響

金幸美,成在鉉 慶北大學校 齒科大學 1984 慶北齒大論文集 Vol.1 No.1

The following are the results of the experiment with rabbits on the influence on breathing, b??od pressure and heart rates caused by monomeric methyl methacrylate. As a result of injecting monomeric methyl methacrylate, subcutaneous, intraperitoneal, intr??enous, it was found that subcutaneous and intraperitoneal injection caused hardly any chang?? in blood pressure and heart rate; while the intravenous injection caused immediate hypotension ?? bradycardia which did not last long. When monomeric methyl methacrylate was applied intravenously, together with hypotension was found that the breathing became shallow in depth and the frequency became faster and egular. In the changes of blood pressure, systolic fall was inhibited rather than diastolic by pretreatment with atropine. The bradycardia caused by intravenous injection seemed to show a rem??kable inhibition by pretreatment with atropine.

소년원생들의 체육활동 만족도에 관한 연구

박현조,이상행 圓光大學校附設 生活體育硏究所 1994 生活體育硏究 Vol.5 No.-

The purpose of this study are to investigate and analyze the 214 inmate juvenile of Chon-ju city to see sports and exercise activity and flow experience by the questionnaire. The major findings obtained by this study were as follows: 1. The inmate juvenile is content with sports and exercise activity. 2. The sports and exercise activity of the inmate juvenile increase the degree of a flow experience. 3. The contentment of inmate juvenile's sports and exercise activity has no difference in the type of each crime or his own school career. 4. The inmate juvenile sports and exercise programs must be prevented from delinguency, and then be developed into direction preventing it. 5. A special sports and exercise programs must be developed for a potential force of the inmate juvenile.

자동교시기능을 갖는 로봇의 3차원 오프라인 시뮬레이터 개발

신행봉,정동연,한성현 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

We propose a unmaned integrating control system based-on Windows XP version Off-Line Programming System which can simulate a Robot model in 3D Graphics space in this paper. The industrial robot with 4 and 6 axes modeled SM5 and AMI respectively were adopted as an objective model. Forward kinematics, inverse kinematics and robot dynamics modeling were included in the developed off-line program. The interface between users and the off-line programming system in the Windows XP's graphic user interface environment was also studied. The developing language is Microsoft Visual C++. Graphic libraries, OpenGL, by silicon Graphics, Inc. were utilized for 3D Graphics.

로봇 매니퓰레이터의 시각구동제어

신행봉,정동연,한성현 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

The equipment of industrial robot in manufacturing and assembly lines has rapidly increased. In order to achieve high productivity and flexibility, it becomes very important to develop the visual feedback control system with Off-Line Programming System(OLPS). We can save much efforts and time in adjusting robots to newly defined workcells by using OLPS. A proposed visual calibration scheme is based on position-based visual feedback. The calibration program firstly generates predicted images of objects in an assumed end-effector position. The process to generate predicted images consists of projection to screen-coordinates, visible range test, and construction of simple silhouette figures. Then, camera images acquired are compared with predicted ones for updating position and orientation data. Computation of error is very simple because the scheme is based on perspective projection, which can be also expanded to experimental results. Computation time can be extremely reduced because the proposed method does not require the precise calculation of tree-dimensional object data and image Jacobian.

과학전 출품작과 현장학습의 연계성에 관한 연구

박행신,오덕철,김원택,김규용,현진오,정충덕 濟州大學校 師範大學 科學敎育硏究所 1987 科學敎育 Vol.4 No.-

In this paper, we report some sorts of result obtained by investigating the exhibits which had been submitted for "The National Exhibition of Science"and "The Science Exhibition for the Students of Cheju-do"during the last ten years and by putting the questions to the science teacher of the teacher of the middle and high schools in Cheju-do. Up to the half number the exhibits are occupied by the field of physics and biology. Almost the exhibits (above 90%) have the contents related to those of the current curriculum. However, 30.2% of the respondents only believe that their students may put the exhibits to practical use in learning. Many respondents replied that they could have not participated in the exhibition of science because they were in heavy duty and the fiscal support were not only so limited but also not sufficient enough to make an excellent work.

잭슨 구조적 프로그래밍 방법의 통합을 위한 새로운 객체지향 방법에 관한 연구

정현숙,조정은,김행곤 대구효성가톨릭대학교 응용과학연구소 1995 응용과학연구논문집 Vol.4 No.-

Software is on the increase to translate existing system into an object-oriented system that is due to spread a problem recognition to have structured development methodology and prosperity of object-oriented related techniques. This paper presents a new object-oriented method which integrates the Jackson Structur-ed Programming method with an object-oriented approach. The new method analyzes the user's services, identifies attributes from data structure diagrams, and identifies operations from program structure diagrams. As well, this method defers the identification of class relationship until the attributes and operations have been identified, so as to present premature desicions. Besides, the con-cepts of "leading object" is used to decrease the number of actors and agents and to in-crease the number of servers in a system. Some of the results may also enhance reusability of the objects.

스카라 로봇의 속도제어를 위한 지능제어 알고리즘 개발

한성현,신행봉,Le Xuan Thu,안종국 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-

We propose a new technique to the development of Intelligent control algorithm based-on digital signal processors in order to improve the precision and robustness for system of industrial robot. Intelligent control has emerged as one of the most active and fruitful areas for research in the applications of fuzzy set theory, especially in the real of industrial processes. In this thesis, a self-organizing fuzzy controller for the industrial robot manipulator with a actuator located at the base is studied. A fuzzy logic composed of linguistic conditional statements is employed by defining the relations of input-output variable of the controller, In the synthesis, one of the most difficult problems is the determination of linguistic control rules from the human operators. To overcome this difficult, SOFC is proposed for a hierarchical control structure consisting of basic level and high level that modify control rules. The proposed scheme is simple in structure, fast in computation, and suitable for implementation of real-time control. Performance is illustrated by simulation and experimental results for SCARA robot.

오프라인 프로그래밍을 이용한 스카라 로봇의 비쥬얼 피드백 제어

신행봉,이우송,이현철,한성현 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

The equipment of industrial robot in manufacturing and assembly lines has rapidly increased. In order to achieve high productivity and flexibility, it becomes very important to develop the visual feedback control system with Off-Line Programming System(OLPS). We can save much efforts and time in adjusting robots to newly defined workcells by using OLPS. A proposed visual calibration scheme is based on position-based visual feedback. The calibration program firstly generates predicted images of objects in an assumed end-effector position. The process to generate predicted images consists of projection to screen-coordinates, visible range test, and construction of simple silhouette figures. Then, camera images acquired are compared with predicted ones for updating position and orientation data. Computation of error is very simple because the scheme is based on perspective projection, which can be also expanded to experimental results. Computation time can be extremely reduced because the proposed method does not require the precise calculation of tree-dimensional object data and image Jacobian.

精密測定 計器用 Stainless Steel의 加工과 熱處理에 따른 諸性質의 變化

李宗炫,安辛根,金學信 全北大學校 1988 論文集 Vol.30 No.-

In order to study the change of properties in Fe-13.3% Cr-0.37%C martensitic stainless steel for precision measuring gauge with the various heat treatments and plastic working, the change of micostructure, hardness and wear resistance were investigated. The results obtained in this experiment are as follows: 1. The high Cr alloy of 13% Cr martensitic stainless steel has selfhardening property which is not remarkably affected by the cooling rate, and also the hardness of this alloy was the highest value in the case of oil quenching after austenitized at 1000℃ for 1/3 hour. 2. The hardness and the corrosion resistance of low temperature tempering treatment are superior to high temperature tempering, especially the hardness of 200℃×2hr tempering treatment are superior to high temperature tempering, especially the hardness of 200℃×2hr tempering treatment in the case of air cooling after austenitized at 1050℃ for 1/3 hour is excellent. 3. The amount of retained austenite hardly existed in the case of air cooling after austenitized at 1000℃ for 1/3 hour, and the increase of hardeness with subzero-treatment is very small. 4. The property of hot working is good but the property of cold working is poor. And then, the secondary hardening with reheating treatment appeared at 400~450℃. 5. Bainite trasformation was occurred in the isothermal heat treatment, and the hardness and the wear resistnace of marquenching treatment are higher than martempering treatment. 6. The elevation of the wear resistance is proportional to the increase of the hardness obtained from the various heat treatments, especially the wear resistance of 200℃×2hr tempering treatment after air cooling is effective than after oil quenching and the wear mechanism is mainly a grinding abrasion.