• The Transactions of the Korea Information Processing Society
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• v.6 no.3
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• pp.641-653
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• 1999

The paper is design and implementation of the system to support security communication between a Web Browser and a CGI program by a Web Server using PKI(Public Key Infrastructure. This system uses GSS(Generic Security Service)-API to communicate with PKI, offers a Web user a Client Proxy, and offers a CGI developer there library functions related with security. TLS(Transport Layer Security) supports security communication between a Web Browser and a Web Server, but the system supports security communication between a Web Browser and a CGI program as the protected data received from a Client Proxy are sent to a CGI program, and the CGI program decrypts the data using the library functions supported by this system.

• Microbiology and Biotechnology Letters
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• v.24 no.1
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• pp.132-136
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• 1996

A comutation server is needed to provide analysis programs to Korean biologists, especially genome researchers, on GINet. For each analysis program, we implmented an input form with HTML and a CGI program for interface between an input form and an analysis program with C language on GINet computatin Web server. We made two construction methods of CGI programs for analysis programs, and implemented all CGI programs based on the methods followed by modifying each CGI program for specific processing of each program. On the server ten programs are availabel now, which include most frequently used ones and those developed by our team, and most programs with will be ported or developed by our team will be available on the Web server.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.5B
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• pp.478-485
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• 2006

In this paper, we analyze the conditions of generating the dynamic Web documents in multi-user server and propose effective method for it. PSSI technique leads to replace the complex process of modifying a CGI source program by simply correcting the HTML Web document in the external file form. This technique has the strong points of CGI, flexibility and security of programming as well as those of SSI, easiness of modifying Web documents. Due to the characteristics of PSSI that Web source documents are in the form of external file, we show that with a single CGI program an individual user can design and modify his own Web documents in his directory. This means that PSSI technique has more advantage in managing the server than the CGI method which requires CGI program to be set up whenever that service is needed.

• Proceedings of the KSCN Conference
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• 1999.05a
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• pp.91-91
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• 1999

• Journal of Educational Research in Mathematics
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• v.14 no.4
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• pp.421-434
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• 2004

Cognitively Guided Instruction (CGI) is one of the most successful professional development programs for elementary mathematics teachers in US. This article introduces its theoretical background, research-based framework of addition and subtraction work, and how the program has been disseminated. Carpenter and Fennema started CGI aiming to develop a professional development program that focused on research knowledge of children"s thinking. Their goal was. to bring a significant change in teaching by helping teachers understand how children think mathematically. This 3-year NSF funded project grew to be 11-year long, and a number of publications have reported consistent successful learning and teaching by CGI students and teachers compared to counterparts throughout US. CGI′s success by focusing on improving teachers′ knowledge of children′s thinking offers possible opportunities for teacher educators to re-conceptualize teacher education in Korea.

• The Transactions of the Korea Information Processing Society
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• v.6 no.8
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• pp.1989-1999
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• 1999

Many people are the latest interested in the integration of the WWW and database systems. The UCM(United CGI Management) system, which is proposed on this study, is based on the method using CGI that does not change existing servers and clients to integrate the WWW and database system. Since the CGI executable architecture executes a CGI program whenever the database is accessed, the system performance is reduced greatly when many request to the database are made simultaneously. However, the UCM system improves the system performance since it uses the integrated CGI running a daemon process. Moreover, the proposed system can use the WWW database more economically and doesn't use the SQL because it does not use a DBMS. In UCM system, we define the extended HTML tags to implement the WWW database interface and use the EXODUS storage manager for accessing the database.

• The Transactions of the Korea Information Processing Society
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• v.6 no.4
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• pp.1022-1031
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• 1999

In this paper, we propose the framework of a visual language named VIOLA(VIsual Object-oriented Language for Multimedia Applications), which is developed for web authoring. VIOLA supports the user to construct HTML documents and CGI programs even if he/she doesn't know exact HTML tags and CGI programming. VIOLA, a user interface building part and a programming logic building part are combined by the data-flow model. the user interface building part provides direct manipulation and a WSIKWYG interface, and the program logic building part provides more intuitive interface by using predefined classes and the data-flow model. thus, even a novice user can construct sophisticated applications by simply moving or clicking the mouse. several classes which generate CGI codes are predefined, and they are represented with highly abstracted visual components, By reusing predefined classes, CGI codes are automatically generated. In VIOLA, all major steps in builidng generated wit HTML documents and Java CGI programs.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.50 no.6
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• pp.259-264
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• 2001

The electric utility industry around the world is undergoing a revolutionary transition from vertically integrated monopoly structures to a competitive structures. Competition in an open transmission access(OTA) makes the market participants access easily the transmission system in a non-discriminatory and equitable manner. The competitions of suppliers and customers make the electric market price change every hour. This paper presents a web program in the internet environment with a function of optimal power flow(OPF) calculation. The Web program gives the nodal marginal cost and the congestion charge using the shadow prices resulted from OPF. This web program is realized by a Perl and JAVA languages, and using the common gateway interface(CGI).

• Microbiology and Biotechnology Letters
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• v.24 no.3
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• pp.371-375
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• 1996

TFD is a transcription factor database which consists of short functional DNA sequences called as signals and their references. SIGNAL SCAN, developed by Dan S. Prestridge, is used to determine what signals of TFD may exist in a DNA sequence. This program searches TFD database by using a simple algorithm for character string comparison. We developed TFSCAN that aims at searching for signals in an input DNA sequence more efficently than SIGNAL SCAN. Our algorithms consist of two parts, one constructs an automata by scanning sequences of rFD, the other searches for signals through this automata. Searching for signal-related references is radically improved in time by using an indexing method. Usage of TFSCAN is very simple and its output is obvious. We developed and installed a TFSCAN input form and a CGI program in GINet Web server, to use TFSCAN. The algorithm applying automata showed drastical results in improvement of computing time. This approach may apply to recognizing several biological patterns. We have been developing our algorithm to optimize the automata and to search more sensitively for signals.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.20 no.6
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• pp.104-110
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• 2006

In this paper, we proposed the micro web-server implementation on Strong ARM processor with embedded Linux. The parallel port connecting parallel I/O is controlled via HTTP protocol and web browser program HTTP protocol with Linux, the micro web server program and port control program are installed on-board memory using CGI to be accessed by web browser. The processor parallel input port is monitored and parallel output port is controlled from remote hosts via HTTP protocol. The result of the proposed embedded micro-web server can be used in remote automation systems, distributed control via internet using web browser.