• Korean Management Science Review
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• v.22 no.2
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• pp.109-133
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• 2005

The exponential growth of the on-line shopping mall has been the advent of buying and selling products and services over the internet. In these circumstances, this paper presents the importance of understanding and managing the purchasing behavior of on-line shopping mall customers. The main purpose of this research is to find out the antecedents of customer trust and to conceptualize and investigate the relationship between endogenous mediating variables(such as customer trust, attitude, loyalty, relationship involvement) and purchasing and/or repurchasing intention in internet shopping mall. The empirical findings are as follows : First, the three antecedents of customer trust( EC system characteristics, psychological propensity, and trustworthiness) had the positive effects on the formation of site trust. Second, we found out that there were direct or indirect relationships between the mediating variables and on-line purchasing and/or repurchasing intention. In Particular, the direct effects of customer attitude on customer loyalty and buying intention were rejected, but the indirect effects through relationship involvement were accepted. This means that the relationship marketing is probably more important for the success of internet shopping mall Third, there were no direct relationship between the mediating variables and the repurchasing intention, but most researches in the brick and mortar, the proposition are supported. This implies that repurchasing intention was intensified by the indirect path, such as site trust $\longrightarroe$ attitude $\longrightarroe$ involvement $\longrightarroe$ loyalty $\longrightarroe$ purchasing intention $\longrightarroe$ repurchasing intention. So, the internet marketers must make an effort not only to strengthen the direct casual linkage between them but also to consolidate the indirect connections leading to boost purchasing and repurchasing intention.

• IE interfaces
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• v.15 no.3
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• pp.230-240
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• 2002

Information technologies centered on the internet in the area of shipbuilding and marine engineering further incur the needs to increase the flexibility of the organization, the dispersion of work process, and the use of out sourcing, as well as the globalization of related market. In near future, electronic commerce and concurrent engineering based on CALS/EC and the Internet will be an integral part of the environment and upon these changes, ship design and construction will become a computer supported cooperative work of many dispersed and specialized groups. As the means of active response to these environmental changes, many new concepts such as digital shipbuilding, virtual shipyard, and simulation based design are appearing. In this paper, the concept and current status of digital manufacturing in general manufacturing industry will be reviewed. Then, related technologies, area of application and methods of digital manufacturing in shipbuilding and marine industries are presented. In addition, virtual assembly simulation system for shipbuilding(VASSS), a tool for crane operability and block erection simulation in virtual dock based on 3D product model, will be introduced.

• Journal of Internet Computing and Services
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• v.6 no.3
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• pp.1-16
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• 2005

This paper propose not only MDIT(Mobile Digital Investment Trust) agent design for Trust Investment under Mobile E-commerce environment, but also the symmetric key algorithm 3BC(Bit, Byte and Block Cypher) and the public encryption algorithm F2mECC for solving the problems of memory capacity, CPU processing time, and security that mobile environment has. In Particular, the MDIT Security Agent is the banking security project that introduces the concept of investment trust in mobile e-commerce, This mobile security protocol creates a shared secrete key using F2mECC and then it's value is used for 3BC that is block encryption technique. The security and the processing speed of MDIT agent are enhanced using 3BC and F2mECC.

• Journal of Internet Computing and Services
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• v.3 no.4
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• pp.1-9
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• 2002

As a XML Schema has been settled to W3C as standard at May. 2001 and technologies like as XML. Xpath and NameSpace related with XML has been developing. XML is becoming the standard of the new document exchanging. Due to the ability expressing various types of documentstructure through XML, ebXML, RosettaNet, and BizTalk are using XML as a core technology in the part of e-Business, To make the task automatically in the B2B EC now, a standard XML document is needed. Internal documents in each company should be transformed differently without any loss to work with other companies. In this paper, transforming XML document based on JAVA servlet is considered as realization of a XML system to exchange documents safely.

• International Commerce and Information Review
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• v.1 no.1
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• pp.227-251
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• 1999

The realization of the Internet and Electronic Commerce through the progress development of the information & communication has changed the transition of the financial settlement system all of the world. And Electronic Commerce has becoming the most important tools to decide the value from the real money, existing bills, coins to the Electronic Money. Electronic Money is very useful materials with Electronic Wallet at cyber times in the future. So that reason, I studied Electronic Money's present situation & after development direction in Korea. And the purpose of this paper is to introduce Electronic Money's modem definition and to analysis the common use situation, operation at home and abroad at Electronic Commerce times. In add to investigated advanced countries Electronic Money utilization and drawed out current events point. So I suggest to this like point, in honour of Electronic Money's common use in Korea. First to establish universality. Second, to make various terminals and the powerful networking structure. Third, to establish stability. Fourth, renovating the system goes side by side. Futhermore, to develop Electronic Money's, it is necessary to make skilled labour and to learn foreign advanced technology.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.3C
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• pp.257-263
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• 2003

Error control and concealment in video communication is becoming increasingly important because transmission errors can cause single or multiple loss of macroblocks in video delivery over unreliable channels such as wireless networks and the internet. This paper describes a temporal error concealment by postprocessing. Lost image blocks are overlapped block motion compensated (OBMC) using median of motion vectors from adjacent blocks at the decoder. The results show a significant improvement over zero motion error concealment and other temporal concealment methods such as Motion Vector Rational Interpolation or Side Match Criterion OBMC by 1.4 to 3.5㏈ gain in PSNR. We present experimental results showing improvements in PSNR and computational complexity.

• Journal of Information Technology Services
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• v.1 no.1
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• pp.81-117
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• 2002

The generalization of Internet use has been spreaded all over the world and impacted company to introduce intranet and extranet for their operation which dealt with electronic commerce. For these reason, endeavor of implementation of web site system is promotioned and enhanced the possibility of adaptation range for the view of company. Dramatic competition which company faced with the use of internet and request from all over the world made company brought company to various and different type of level. It is necessary to develop website system with experty knowledge to satisfy customer needs. To deal with this situation, works from the level of government should proposed to spread whole country business which propelled through kyungnam mechanic industry information promotion center. With strategic proposal concerning district characteristics to adapt electronic commerce successfully, information promotion should performed. Support of government is needed continuously to realize infra of ASP composed of 4,877 mechanic industry company. It might be possible to deal with international rapid change with cooperation of company and government related department.

• International Journal of Internet, Broadcasting and Communication
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• v.13 no.2
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• pp.103-111
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• 2021

Among transport vehicles, Special Vehicles (SVs) are seriously exposed to energy and environmental problems. In particular, elevator cars used when moving objects in high-rise buildings increase the engine's rotational speed (radian per second: RPM). At this time, when the vehicle accelerates rapidly while idling, energy consumption increases explosively along with the engine speed, and a lot of soot is generated. The purpose of this paper is to develop a bi-directional DC-DC converter for control of vehicle power and secondary battery used in an elevated ladder vehicle (EC) used in the moving industry. As a result of this paper, the performance test of the converter was conducted. The charging/discharging state of the converter was simulated using DC power supply and DC electronic load, and a performance experiment was conducted to measure the input/output power of the converter through a power meter. Through this experimental result, it was confirmed that the efficiency was more than 92% in Buck mode and Boost mode at maximum 1.2kW output.

• Journal of Global Scholars of Marketing Science
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• v.7
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• pp.261-281
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• 2001

As a new environment, the Internet proposes to us the innovative change of our life. With difficulty, we can go after the Internet's potentiality and the growth speed of technology. In the new stream of innovation technology, we can probably feel the fear of tremendous changes, the reverse, also hope to get the opportunity that come out of Internet world. EC(Electronic Commerce) that out of the evolution of Internet technology gets a coporation changes to survive in 21st century. So the corporation must set the strategy to fit a Internet focused society. As one of them, a virtual store is opened on the Internet. Recently, there has been much attention to the Internet shopping mall as a new distribution channel and marketing tool. This study analyzed that the system environment, perceived product risk, easy of order, perceived security risk would have impact on the customer satisfaction in Electronic Commerce. The Purpose of this study is to develope the concept of the determinants of customer satisfaction and to test a theoretical framework that attempts to explain how the perception of satisfaction in Electronic Commerce. The proposed hypotheses were tested internet shopping mall users and the study results show all hypotheses are supported.

• Journal of Biosystems Engineering
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• v.28 no.1
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• pp.53-58
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• 2003

This study was carried out to design, construct, and test a greenhouse monitoring system fur the environment and status of control devices in a greenhouse from a remote site using internet. The measuring items selected out of many environmental factors were temperature, humidity, solar radiation, CO$_2$, SOx, NOx concentration, EC, pH of nutrient solution, the state of control devices, and the image of greenhouse. The developed greenhouse monitoring system was composed of the network system and the measuring module. The network system consists of the three kinds of monitors named the Croup Monitor. the Client Monitor and the Server Monitor. The results of the study are summarized as follows. 1. The measuring module named the House Monitor. which is used to watch the state of the control device and the environment of the greenhouse, was developed to a embedded monitoring module using one chip microprocessor 2. For all measuring items. the House Monitor showed a satisfactory accuracy within the range of ${\pm}$0.3%FS. The House Monitors were connected to the Croup Monitor by communication method of RS-485 type and could operate under power and communication fault condition within 10 hours. The Croup Monitor was developed to receive and display measurement data received from the House Monitors and to control the greenhouse environmental devices. 3. The images of the plants inside greenhouse were captured by PC camera and sent to the Group Monitor. The greenhouse manager was able to monitor the growth state of plants inside greenhouse without visiting individual greenhouses. 4. Remote monitoring the greenhouse environment and status of control devices was implemented in a client/server environment. The client monitor of the greenhouse manager at a remote site or other greenhouse manager was able to monitor the greenhouse environment and the state of control devices from the Server Monitor using internet.