객체지향성 웹 모델 프로세서 설계에 대한 연구

정혜옥,양동일,남윤성,박순희,최형진 강원대학교 정보통신연구소 2006 정보통신논문지 Vol.10 No.-

UML is able to visualize and specialize the output of the system center of the software, and able to connect to various languages and is constructed by engineering/re-engineering. Also, UML is a standard Modeling Language that aims at the documentation. Recently Web Application System is quickly popular and gigantic, it's possible to do modeling using UML which is the method of Object-Oriented analysis and design and simplify the complex developing course of software. In this paper, we suggest the 『Post Seminar System』 model for instance Object-Oriented Web Application which can increase the efficiency of businesses through of exchanging information with members. We constitute web application by separating it into 3 steps such as View class which takes full charge of Screen Presentation, controller which plays the role of connecting ring and divergence of View class and Model class, and Model class that takes charge in the gear with the Application Logic and DB applying MVC model which has considerable merit in developing and maintaining the web application.

鐵筋콘크리트 T形 보 斷面의 最適化에 關한 硏究

鄭海駿,李鎭沃 충남대학교 공업교육연구소 1986 論文集 Vol.9 No.1

This paper presents an optimization algorithm for the reinforced concrete T-beam section by the Lagrange multiplier optimization method. The efficiency of this algorithm is checked by comparing the computed results with those of the conventional method. The algorithm is easily accessible to practical optimal structural design in Korea for cost reduction.

매트릭스 變位法에 의한 構造物의 解析

鄭海駿,李鎭沃 충남대학교 공업교육연구소 1985 論文集 Vol.8 No.1

The matrix displacement method for structural analysis is summarized and a computer program for Apple Ⅱ type micro-computer is suggested as an algorithm for the structural analysis of trusses, beams and rigid frames in one program. This program is checked by numerical examples and proved to be available for structural engineers.

Dual문제에 의한 라멘 構造物의 最適設計

鄭海駿,李鎭沃 충남대학교 공업교육연구소 1989 論文集 Vol.12 No.1

An optimal design of Rahmen structure is performed based on plastic theory by the dual problem. The Computer program is derived for the personal computer, and applicability and propriety of the program is investigated through the two example Rahmen structures. As a result, it is found that this program can be effectively used for the optimal design of simple Rahmen structure especially for the pre-design process.

슬럼프값을 갖지 않는 콘크리트에 관한 연구

鄭海駿,姜準默,李鎭沃 충남대학교 공업교육연구소 1982 論文集 Vol.5 No.1

This paper identified the W/C ratio of no-slump dr lean concrete analyses its compressive strength and its coefficient of permeability. The relation between no-slump W/C ratio and the quantity of unit cement is approximately linear. The compressive strength by variation of W/C was relatively low and the coefficient of permeability was comparatively high. By the use of admixture, a better quality of no-slump dry lean concrete is expected.

디젤 乘用車輛에서 DPF 條件에 따른 極微細粒子의 排出 特性에 關한 硏究

鄭珉元,崔源鶴,柳鍾植,李海喆,車京玉 明知大學校 産業技術硏究所 2008 産業技術硏究所論文集 Vol.27 No.-

Recent1y, the nano-PM(Particulate Matters) number concentration emitted by diesel internal combustion engine has focused on attention because this nano-PM is suspected being hazardous of human health. In this study, the PM of the diesel passenger vehicles were investigated by number concentration. A condensation particle counter (CPC) system was used to measure the particle number concentration and size of diesel exhaust particles at the end of dilution tunnel during the NEDC(ECE15+EUDC) vehicle test mode using light-duty diesel passenger vehicles with DPFs. As a research result, the characteristic of DPF performance about diesel nano-particle number concentration and size distribution was investigated in this study.

幾何的 計劃法을 應用한 平面트러스 構造物의 形狀最適化에 關한 硏究

鄭海駿,李鎭沃 충남대학교 공업교육연구소 1984 論文集 Vol.7 No.1

The formulation of the geometric optimization for truss structures based on the elasticity theory turns out to be the ncnlinear programming problem which has to deal with the cross-sectional area of the member and the coordinates of its nodes simul-taneously. A few techniques have been proposed and adapted for the analysis of this nonlinear programming for the time being. These techniques, however, bear some limitation on truss shapes, loading condition and design criteria for the practical application to real structures. A generalized algorithm for the geometric optimization of the truss structures, which can eliminate the above mentioned limitations, is developed in this study. The algorithm developed utilizes the two-phases technique. In the first phase. the cross-sectional area of the truss member is optimized by geometric programming method. In the second phase, the geometric shape is optimized utilizing the unidirectional search technique of the Powell method which make it possible to minimize only the objective function. The algorithm developed in this study is numerically tested for two truss structures and compared with the results of other algorithms to examine its applicability and stability. The numerical comparison show that the two-phases algorithm developed in this study is safely applicable to design, and the convergency rate is fast and stable compared with other iteration methods for the geometric optimization of truss structures.

디젤엔진排出에서 나노PM 粒子計測用 凝縮核개수기(CPC) 特性에 關한 比較解析

鄭珉元,崔源鶴,柳鍾植,李海喆,車京玉 明知大學校 産業技術硏究所 2008 産業技術硏究所論文集 Vol.27 No.-

Recently, the nano-PM 's number concentration emitted by diesel internal combustion engine has focused on attention because this particulate matters are suspected being hazardous of human health. In this study, the particulate matters (PM) emissions of these vehicles were investigated by number concentration. A condensation particle counter (CPC) system was applied to measure the particle number and size concentration of diesel exhaust particles at the end of dilution tunnel along the NEDC(ECE15+EUDC) vehicle test mode using TSI 3010D and HCT 4312 CPC. As the research result, the characteristic of CPC comparison diesel nano-particle number and size distribution was investigated in this study.

가정과 수업의 협동학습이 학생의 교과에 대한 흥미와 태도에 미치는 영향

양정혜,신상옥 한국 가정과 교육 학회 1998 한국가정과교육학회지 Vol.10 No.1

The purpose of this (1) to develop the teaching plan based on Cooperative Learning approach and (2)to investigate the effect of students' Interest on Subject mater and Teaaching method and Attitudes to others on the area of Foreign food in Home Economics class. Among those various types of Cooperative Learning's this study adopted 'Learning Together' developed by Johnsons. To investigate these purpose, subject matter were analyzed and reconstructed for Cooperative Learning. The tests were developed to evaluate the interest on the Subject matter and teaching methods, an the attitude to thers of the students. 108 femail high school students were divided into two groups with 54 students-traditional learning condition, Cooperative Learning condition-and had a 5 session. The subject of the class was foreign food including Western, Chinese, and Japanes food. Before and after the class, students were tested. The statistical methods used for the study were t-test. The research findings are as fooows : When the students in the Cooperative Learning classes were compared before and after the test, (1) interest on Subject matter were improved considerably(p〈.001) (2)Interest on Teaching methods were improved considerably p〈.05) (3)Attitude to Others were improved considerably (p〈.001) Therefore when the teaching-learning mldel based on Cooperative Learning was used in Home Economics class, their interest on the subject and teaching methods and attitude to others were improved.

塑性 모멘트 分配法에 의한 鋼材 라멘 構造의 最適設計

李鎭沃,鄭海駿 忠南大學校 産業技術硏究所 1990 산업기술연구논문집 Vol.5 No.1

This study derives numerical procedure which calculate optimum weight of steel Rahmen using a plastic moment distribution method. The optimum design values obtained by this procedure are compard with the results of references. As a result, it is found that this numerical procedure is economical in the initial design, because the results can be calculated by the calculator.