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이지영,Lee, Jie-Young 한국정보기술전략혁신학회 2006 情報學硏究 Vol.9 No.3
This paper proposes directory service protocol in distributed environment. By adding an condition retrieval function to Modify operation, the ExtModify operation improves the inconvenience to transfer a search operation and resume a Modify operation. The method suggests how to correct all the entries which require retrieval condition out of other entries designated by LDAPND.
이지영,Lee, Jie-Young 한국정보기술전략혁신학회 2009 情報學硏究 Vol.12 No.1
In this paper, we aim that it solve to problem of the database hoarding because a week connectivity of wireless networks and cutting of link, Consistency of shared data, optimizing of the log include to Mobile Continuous Query Processing System under the mobile client and server environment. and we demonstrate of the superiority for the new Mobile Continuous Query Processing System compare C-I-S(Client-Intercept -Server)model with performance. and we perform to various experiment in order to establishment of superiority compare the index architecture and method for the realtime Continuous Query Processing. in this paper.
이지영(Jie-Young Lee) 한국컴퓨터정보학회 1999 韓國컴퓨터情報學會論文誌 Vol.4 No.4
공개키 암호화 알고리즘을 사용하는 인증기법은 비밀키로 인증값을 생성하여 자신을 증명하고, 공개키를 통하여 검증하는 방법이다. 본 연구에서는 대칭형 암호화 알고리즘을 이용한 인증에서의 문제점이었던 비밀키의 분배 및 관리의 문제점은 해결하고 공개키 리스트에 대한 관리 문제를 인증센타를 통하여 인증서를 발급받는 형태의 방법을 제공하여 공개키 관리를 효율적으로 할 수 있는 알고리즘을 제시한다. The authentication technique, which uses public key cryptographic algorithms, proves itself by generating authentication value through secret keys and gives verification by means of public keys.<br/> This paper is believed to 1) solve the problem of distribution and management of secret keys, which still remain the problem of authentication used in symmetric cryptographic algorithm.<br/> 2) provide the method to receive a certificate of handling the problems of public key lists through the authentication authority, and finally 3) suggest an algorithm which will enable us to run the public keys more effectively.
이지영(Jie Young Lee),안영화(Young Hwa An),윤석창(Suck Chang Yun),원동호(Dong Ho Won),김병찬(Byung Chan Kim) 한국정보과학회 1988 정보과학회논문지 Vol.15 No.1
본 논문에서는 유리수 상에서의 RSA공개Key 암호방식을 2차체 상에서의 RSA공개Key 암호방식으로 확장한 새로운 공개Key 암호방식을 제안하여 구체적인 예를 들어 확인하고, 그 타당성을 증명하였다. 이 암호방식은 2차체 상에서 서로 상이한 소(prime) ideal [p, q]을 선택하여 암호화 Key와 복호화Key를 구하고, 이것을 사용하여 암호화 및 복호화를 수행하므로써, 공개Key 암호계구성의 근본이 되는 파라메터 p, q의 선택폭을 넓혔다. In this paper, we propose a new method for constructing the Public-key Cryptosystem which is extended the RSA cryptosystem over quadratic field, and verify the new Public-key Cryptosystem with some examples. For our method, we select each different prime ideals [p, q] over quadratic field, and using this result, the encryption key and the decryption key are made. So a number of pameters p.q which we can select is increased.
문제 해결 학습을 위한 오라클 웹 코스웨어 설계 및 구현
조도은,이지영,Cho, Do-Eun,Lee, Jie-Young 한국정보기술전략혁신학회 2002 情報學硏究 Vol.5 No.2
This study attempts to construct and manage the distance learning system by focusing on education institutins. However, they lack not only web-based courseware for information literacy but also the contents for the management technology. This study tried to design and implement the web-based courseware by using OCP(Oracle Certified Profession) based on the initial Oracle in distance learning. Learners' individual variations were considered based on problem solving learning. Also, the practical contents that could be applied in the educational field were selected. The learning type web-based courseware, using the technology of ASP, DHTML, JAVAscript, VBA, was designed and implemented into the framework that could be updated easily. The result of the study shows: first of all, this courseware induced a greater understanding of the Oracle language and the student's interests. Secondly, the student's had more control over the process of individual learning and achieved the goal more effectively through immediate feedback, finally, the students could learn wherever they have on-line connections to the web server.
이해당사자별 정보시스템 사용의 우선순위 분석에 대한 연구
경태원,이지영,김상국,Kyung, Tae-Won,Kim, Sang-Kuk,Lee, Jie-Young 한국정보기술전략혁신학회 2009 情報學硏究 Vol.12 No.2
ERP in the past, primarily centering on large enterprises and the introduction of competition in the global e-business, but along with the proliferation of small and medium-sized enterprises are now in earnest, or to take advantage of the introduction of the ERP plan. However, the introduction of the ERP cost and the effort required to develop, because many never previously introduced ERP expect that the introduction of cost and performance comparisons with the measurement is necessary. Until now, however, the introduction of a framework of analysis followed the introduction of ERP primarily to measure performance of a major improvement. This research, in addition to improving the performance of these tasks have been overlooked until now for the system's user satisfaction BSC (Balanced Scorecard) models and techniques using AHP-specific understanding of the Company (Group executives, middle managers groups, and user groups) Importance of priorities you want to analyze. In summary, the key findings of this study follows. First, ERP user satisfaction measurement for the balanced scorecard indicators in terms of the redevelopment. Second, the information system user satisfaction to the user layer (Layer 3), grouped by the measure. Thirdly, the user satisfaction of the important topics for attention as quantified by measuring the hierarchy. This model is for satisfaction levels as quantitative of future users of the new system, information systems and the introduction of a new model of development based on the evaluation data will be able to take advantage of.
단일 Database Field를 이용한 PHP 무한 File Upload 구현
황기환,변기환,이지영,Hwang, Ki-Hwan,Byun, Ki-Hwan,Lee, Jie-Young 한국정보기술전략혁신학회 2009 情報學硏究 Vol.12 No.2
Currently the Web, multiple files in the Client to upload to the server of the multi-upload method, files are stored in specific folders on the server, the file name field in DB(Database Field) stored in a way that the process has been widely utilized. Therefore, a minimum number of file upload as many file names in the Database and the Table should be created in the field, but also a variable number of files can be uploaded has no limits. In this paper we proposed the new method that files to be uploaded to the server, you can upload a limited number of files, nor due to upload files to reduce load on the database to improve the processing speed of a single field using a multi-method file uploads using PHP directly implemented
Ba(Ti<sub>1-x</sub>Zr<sub>x</sub>)O<sub>3</sub> 세라믹스의 유전 및 전기열량 특성
라철민,류주현,이지영,Ra, Cheol-Min,Yoo, Ju-Hyun,Lee, Jie-Young 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.4
In this study, in order to develop composition ceramics for refrigeration device application at a temperature of less than $90^{\circ}C$, a $Ba(Ti_{1-x}Zr_x)O_3$ composition was fabricated using a conventional solid-state method. Electrocaloric properties of these ceramics were investigated using the characteristics of P-E hysteresis loops in a wide temperature range from room temperature to $150^{\circ}C$. The Curie temperature of $Ba(Ti_{1-x}Zr_x)O_3$ ceramics decreased with the increase of x. The maximum value of ${\Delta}T=0.07^{\circ}C$ in an ambient temperature of $85^{\circ}C$ under 30 kV/cm appeared when x = 0.125. It was concluded that the composition (x = 0.125) ceramics can be used for refrigeration device applications.