나노부품 초정밀가공기용 마이크로스테이지의 절삭력 예측모델 시뮬레이션

김재열,심재기,곽이구,안재신,한재호,노기웅 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

Recently, according to the development of mechatronics industry that was composed of NT, ST, IT, RT and etc, the necessity of nano-parts was increased. Because of the necessity, this research was started for improving work precision of the parts as fixing UPCU (Ultra Precision Cutting Unit) on lathe. So, in this research, we executed the modeling of UPCU (Ultra Precision Cutting Unit) by the application of PZT, the relationship between the displacement of tool in UPCU and the cutting force of it has been in take a triangular position in the case of plane cutting. The modeling of system, that is containing the fine displacement, was performed. Also, we would like to find the optimal cutting condition through the simulation of relationship between the displacement and the cutting force.

최소차원 관측기를 이용한 평면 X-Y 스테이지의 나노 위치제어

김재열,윤성운,곽이구,안재신,한재호 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

Performance test of servo control system that is used ultra-precision positioning system with single plane X-Y stage is performed by simulation with Matlab. Analyzed for previous control algorithm and adapted for modem control theory, dual servo algorithm is developed by minimum order observer, and stability and priority on controller are secured. Through the simulation and experiments on ultra precision positioning, stability and priority on ultra-precision positioning system with single plane X-Y stage and control algorithm are secured by using Matlab with Simulink and ControlDesk made in dSPACE

컴퓨터 법에 있어서의 책임에 관한 연구

鄭鎭世,鄭在晃,方碩皓,河泰勳,李成德,崔鳳哲 홍익대학교 1995 弘大論叢 Vol.27 No.-

This paper, coauthored by Chin-Se Chung, as well as other 5 faculty members at Hong-Ik University Department of Law (Jea-Hwang Jeong, Suk-Ho Bang, Tae-Hoon Ha, Seong-Deog Yi and Bong-Chul Choi), deals with liability issuses surrounding constitutional law, administrative law, civil law (contracts, torts), commercial law, criminal law, international law and philosophy & law. Professor of Law Jea-Hwang Jeong makes a comparative analysis of privacy protection and disclosure of information legal issues, appeared at current Korean law and draft of law in case of the latter one. He suggestes some desirable ways of legislation through revision process and operation of legal rules at his paper. Professor of Law Suk-Ho Bang makes a brief survey of civil liability issues arising out of contracts and torts in English and American law, first. He tries to show that many Parts of arguments in such legal world are attributed to Statute of Frauds tradition, unique to such legal world. New developments in the area of torts, including computer malpractice and computer virus, are shown and analysed in terms of application possibility under our current law. But, as even the Anglo-American courts are found very reluctant to accept those arguments as new grounds for torts liability, it seems more plausible and practicable to refer to contractual approach, basically, rather than to torts approach even under English American law. Professor of Law Chin-Se Chung suggests in his paper on EFT that the allocation of liability under EFT be made under the new and most relevant principle, working for useful transmission way of fund, not solely under traditional legal principles. If such new principle works with high return of risk to users, it makes imminent problems against the goats of consumer protection, and eventually will be hardly refered to. Conversely, if it requires too much sacrifice from the side of banks, then the convenience in such system will not be utilized. So, it may be natural that EFT be discarded even without proper functioning under market system. In conclusion, Professor Chung points out that, only when banks fond that the economy out of cost-saving at tasks outweighs the risk undertaken by the banks, the banks will operate the system. But, if this system makes more return of benefits to the banks with the burden of users, it is against the idea of equity. Consequently, the banks should bear the aggeviated risks in return for the cost saved under this system Professor of Law Tae-Hoon Ha focuses his research paper on criminal liability under EFT. He draws his conclusion out of current criminal statutes that illegal fund transfer under automatic teller machines, cash cards and information system can not be penalized due to lack of proper statutory provision. So, the criminal provision on computer crime, newly made on December of 1995, can be positively appreciated. But, he anticipates that the question whether such new provision will be successful in regulating all illegal activites at fund transfor system without any operation defects in criminal code, or will cause new problem in interpretation of criminal code remains unsolved. Professor of Law Seong-Deog Yi examines the international legal issues which may be given rise to by direct satellite broadcasting. In his paper, the issue of national jurisdiction in relation to direct satellite broadcasting is firstly dealt with. Secondly, the possible ways in which direct satellite broadcasting is regulated by international law are examined with special emphasis of two different approaches, that is, freedom of information approach and state sovereignty approach. In this context, many international conventions concerning direct satellite broadcasting in Particular, and international regulatory regime of outer space in general are broadly reviewed. Thirdly, the types of activities which may be a violation of international legal regime of direct satellite broadcasting are suggested and the possible lethal remedies for these violations are proposed with the traditional international state responsibility law in mind. Professor of Law Bong-Chul Choi explores the relations of computerized society to its laws throughout his paper as a kind of conclusion of this whole paper. Computerized society is one that the technical, scientific, informational knowledge prevails. With correspondence to the structural change in knowledge, the law of such a society has suffered transformation, and the knowledge and techniques distributing and computing legal responsibility has also changed. However, he does not insist that the diffusion of technical knowledge is the sole factor of the transformation of legal responsibility. It is only one of the various factors. Moreover, he does not deny the continuation between the classical techniques distributing legal responsibility and the contemporary ones. In this era, the law realizes fairness and community values at the expense of singularities. In addition, he proposes that legal scholars take the diagnosis of law from the perspective of the technology/knowledge shifts seriously.

고분자압출성형용 Single-Screw에 관한 열유동 기초연구

정효희,김재열,고명석,최승현,심재기,한재호 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

Extrusion Screw, point parts of extrusion molding extruder, is expanded widely use area with construction machinery, site conveyance device food processor, medicine as well as Polymer extrusion forming. Because this can expect large quantity demand about Screw of special quality of extrusion Screw item, is become processing industry that adopt all kinds of small quantity production type. Accordingly, analysis by extrusion screw is also consisting of several directions. Extrusion screw differentia is appeared much at material selection of screw itself and each screw design as parts that cause a lot of high temperature and high tension and attrition among processing of product and use purpose and that should do it so that working conditions back according to kind of used balance may optimize of each Screw are desirable. In this treatise, analyzed and analyze single-screw that is using developing in Human Resource Training Project for regional Innovation subject considering pressure, temperature etc.. of extrusion screw using CFdesign that is 3 dimensional analysis program.

재질 변화에 따른 초정밀가공기용 마이크로 스테이지의 안정성 해석

김재열,곽이구,김향우,안재신,김영석,김기태 한국공작기계학회 2002 한국공작기계학회 추계학술대회논문집 Vol.2002 No.-

In this paper, stability of ultra precisio unit is analyzed, this unit is the kernel unit precision processing machine. According alteration of shape and material about stability investigation is performed. Through this stability investigation, trial is reduced in design and manufacture, at the time, we are accumulated foundation data for control.

반복함수를 이용한 프랙탈 영상 압축의 최적 분할에 관한 연구

양종현,임재복,정재영 광주대학교 1997 産業技術硏究 Vol.9 No.-

본 연구는 프랙탈 영상 압축[1]을 위한 효과적인 분할 방법을 제안한다. 먼저 원 영상을 일정한 작은 크기의 치역(Range Block)과 분할된 치역의 2배 이상 크기를 가진 정의역(Domain Block)으로 분할한다. 여기에서 정의역과 치역으로 구성된 분할 형태를 이용하는 프랙탈 영상 압축은 작은 사각 블록들의 집합으로 구성되어 진다[2]. 서로 연결된 사각 블록들의 집합은 프랙탈 부호를 가지는 이웃하는 분할(Partition)들로 연결되어 있으며, 이러한 블록들로부터 임의의 서로 이웃한 블록을 제외한 정의역 블록과 치역 블록을 적당한 기준에 의해서 선택한다. 선택된 블록은 다시 사각트리(quad tree) 분할 비교를 행함으로써 최적 분할에 접근이 인정될 수 있음을 보여준다. This paper introduces efficient partitionning methode in fractal image compression. Before, Original image is devide into regular size called the Range block and A domain block size is double of range block. Here domain and range block consist of a collection for small size partition using fractal image compression. Each connected sets of small square image blocks, of which is a neighbor partitioning with a fractal code. They are selected for which except random neighoboring domain and range block on a fitness criterion. This approach showed as compared to quad tree partition.

豫備考査의 入試反映에 對한 調査硏究

朴載昊,張赫杓,金鶴守 釜山大學校 師範大學 1976 교사교육연구 Vol.3 No.1

This study attempts to seek a way of adequate application of the national preliminary examination to the entrane examination of university. Data of examinations during four years(1973-1976)was collected and corelation between two was analysed. The results of this analysis are as follows; a)the corelation between two examinations is very high. and, thus, the following is strongly recommendable; 1.7 multiples of capacity of student entollments may be primarily selected by means of preliminary examinations and the necesary or instrumental subject for the higher education may be imposed on these chosen applicants. b)dropping precedure in each curriculum is desireble because without this applicants are liable to devote themselves only to their interesting curricula disregarding others not well achieved.

[논문]군부대 이전적지가 주변토지이용에 미치는 영향

황재남,이성호 釜山大學校 都市問題硏究所 2004 都市硏究報 Vol.16 No.-

The purpose of this study is an investigation of the transferred army facilities site affecting changes land use in the surrounding area. In this study follows analysis in three steps : first, finding of the concept of what transferred site is and the present state of the transferred army facilities site ; then, finding changes of land use in the surrounding area which the transferred army facilities site affects ; finally, suggestion of the right ways how the transferred army facilities site will be developed. In the future Not only army facilities but also other facilities will be transferred in the suburbs, Therefore transferred sites will be increased. We may development many site by means of various types. In this time we should recognize not only the transferred army facilities site but also a surrounding area. Through the ideas we can make sound development and transferred sites will operate well in the city belonging that site

文士의 관점에서 본 益齋의 시적 특질

柳在日 청주대학교 인문과학연구소 1992 人文科學論集 Vol.11 No.-

體育行政의 地方分權化에 관한 硏究 : 釜山地方을 中心으로

趙在基 東亞大學校附設스포츠科學硏究所 1991 스포츠科學硏究論文集 Vol.9 No.-

The researcher resorted to a questionnaire method in order to attain some reliable data the localization of sports administration. After the significance of their statistic values was tested, the following conclusion were drawn. (1) Sports consciousness In terms of the values of sports activities, the improvement of physical capacity reaped the greatest concern followed by the item of personality formation. About 52.5% or 135 subjects revealed their ignorance of the saclled Hodori Project. (2) Reality of local sports administration Among the problems of local sports administration were the existence of unprofessional administrators and the lack of autonomy due to the administrative centralization. Also prevalent was the formalism for the sake of convenience. The leading proposal for local sports activation was the enlargement of sports facilities. (3) Finance and facilities The main method of eliciting finance was the joint investment of the Pusan City authoritres, businessmen and citizens. While the greatest investment was made into social sports plans, 95.4% of the answerers felt insufficient sports facilities. (4) Participation in sports activities Some 56.4% didn't take part in the sport programs sponsored by the city authorities, princiopally because they didn't know the programs well(48.9%). (5) Elite sports administration The Pusan Sports Association mainly dealt with elite sports administration, while its central problem(52.0%) was that of expenditure. Other problems of concern were the Juvenile Sport Feast(89.9%) and the National Sports Festival(91.9%). (6) Social sports administration Among the basic policies for promoting social sports were the security of more sports facilities and more administrative and financial support through the PR activities of mass media(59.3%). For the activation of office sports activities, the subjects quoted the security of sports facilities and leaders, the heightended consciousness of businessmen, legal support and on in order.