• 통상정보연구
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• 제5권2호
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• pp.91-112
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• 2003

Nowadays, the spreading of electronic commerce using internet demands a lot of change in business environments, as it is called B2B. Especially, the B2B based EC have a majority rates over the 10% of whole EC markets. As the approach way and the core axis of e-Marketplace in B2B markets are changed more by the business section and industry section than by each company sections, all of the world leading company including Korea are trying to take a prior occupation in e-Marketplace market. In korea, B2B e-Marketplace are mainly leaded by ministry of commerce, industry and energy which choice the company, run a trial managed company. Above MOCIE efforts are now having a lot of trial and error. Accordingly, this thesis are focused on researching the construction trends of B2B e-Marketplace, the future prospects, and promotion plans.

• 멤브레인
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• 제14권1호
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• pp.53-56
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• 2004

Direct Methanol Fuel Cell (DMFC) is considered as a candidate technology for applications in stationary, transportation as well as electronic power generation purposes. To develop a high performance direct methanol fuel cell(DMFC), a competent electrolyte membrane is needed. The electrolyte membrane should be durable and methanol crossover must be low. One of the approaches to increase the stability of generally used polymer electrolyte membranes such as Nafion against swelling or thermal degradation is to bond it with an inorganic material physically or chemically. In Noritake Company, we have developed a novel method of reinforcing the polymer electrolyte matrix with inorganic fibers. Methanol crossover values measured were significantly lower than the original polymer electrolyte membranes. These fiber reinforced electrolyte membranes (FREM) were used for DMFC study and stable power output values as high 160 mW/$\textrm{cm}^2$ were measured. The details of the characteristics of the membranes as well as I-V data of fuel cell stacks are detailed in the paper.

• Asia pacific journal of information systems
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• 제29권4호
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• pp.673-689
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• 2019

The Internet enables businesses to acquire a great deal of information, including prices in the open markets. In this study, we investigate what the value of reference price information is to a company in the market and how the company can make use of such information. Using business analytics, we were able to estimate prices of used cars for a rent-a-car company. The results show that a smart pricing information system is useful for collecting online reference price information and for estimating future prices of used cars and rental prices.

• 한국전자거래학회지
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• 제7권3호
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• pp.121-137
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• 2002

SCM(Supply Chain Management) have been introduced in many companies for integrated management and improvement of business process. Recently, as internet and e-business concept are spread globally, the SCM concept is expanded from one internal company process to inter-company process, it makes a Global SCM concept. In this paper, we discuss the implementation of the Global SCM concept using e-business infrastructure, and propose SCM portal models. Four types of the SCM portal model are discussed, which are forecasting information sharing model, e-Marketplace-typed model, collaboration model and logistics information sharing model. The major concept of the SCM portal is to share information of supply chain process, it provide merits of scale to company. The result of this paper can be summarized as follows : First, the information sharing is very useful in the Global SCM. Second, the e-business infrastructure, especially e-Marketplace can be usefully used for implementation of SCM portal. Third, the M2M(Market to Market) function of e-Marketplace is a major function for implementing SCM portal.

• 한국항해항만학회지
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• 제30권6호
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• pp.483-489
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• 2006

본 연구는 정기선해운영업을 중심으로 해운산업에서의 전자상거래 활용 및 성과에 영향을 미치는 요인들을 도출한 후, 도출된 영향요인들과 전자상거래 활용수준 및 성과간에 어떠한 인과관계가 있는지를 검증하고자 하였다. 이를 위해 우리나라 해운기업들의 내부환경변수인 해운기업특성과 외부환경변수인 해운환경특성이 전자상거래 활용수준에 어떠한 영향을 미치는지와 우리나라 해운기업들의 전자상거래 활용수준이 전자상거래 활용성과에 어떠한 영향을 미치는지의 2단계 연구모형을 구조방정식모델을 통해 실증분석하였다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 춘계학술대회 및 창립 30주년 심포지엄(논문집)
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• pp.259-264
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• 2006

본 연구는 정기선해운영업을 중심으로 해운산업에서의 전자상거래 활용 및 성과에 영향을 미치는 요인들을 도출한 후, 도출된 영향요인들과 전자상거래 활용수준 및 성과간에 어떠한 인과관계가 있는지를 검증하고자 하였다. 이를 위해 우리나라 해운기업들의 내부환경변수인 해운기업특성과 외부환경변수인 해운환경특성이 전자상거래 활용수준에 어떠한 영향을 미치는지와 우리나라 해운기업들의 전자상거래 활용수준이 전자상거래 활용성과에 어떠한 영향을 미치는지의 2단계 연구모형을 구조방정식모델을 통해 실증분석하였다.

• 한국전기전자재료학회논문지
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• 제33권4호
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• pp.271-275
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• 2020

Smart windows are used as windows and doors to determine the cooling and heating efficiency of a building. They have characteristics that can increase the energy efficiency of a building, which leads to energy savings. In addition, smart windows can control the amount of light transmitted from the external environment of a building to the interior of a building according to the needs of the user. In this study, a 297×210 ㎟ liquid crystal cell capable of controlling light transmittance was fabricated using a liquid crystal device as an optical shutter. The effect of driving voltage on the transmittance and the effect of the thermal environment on the driving stability were analyzed. We confirmed the applicability of using smart windows as exterior building materials.

• 한국전기전자재료학회논문지
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• 제33권6호
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• pp.471-474
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• 2020

In recent years, the challenge of higher energy efficiency has emerged as urban buildings have become taller, and the area of window glasses has increased. To address the problem of energy efficiency in buildings, research on smart windows is being actively conducted. In this study, an accelerated experiment for thermal stability was conducted to fabricate a liquid crystal cell applicable to external windows. It was confirmed from the study that the function is maintained even in a high-temperature external environment through the change in transmittance by voltage. Compared with the initial transmittance, after the passage of time, the smart window cell to which the sealant was applied showed a small change in transmittance of 1~2%. This result confirmed the thermal stability of the liquid crystal-based smart window.

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 1999년도 학술대회지 vol.1
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• pp.17-31
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• 1999

In some sense an aggregated total of individual companies' competitiveness makes up industrial competitiveness of a nation. However, there are various competitiveness factors that a single company or a small group of companies can not create or overcome Inter-organizational electronic commerce has many of such properties. That is why the role of government is important. In this research, we focus on the efforts that require industrial level efforts. We borrowed various industrial-level analysis frameworks for analyzing the adopt ion and effects of informal ion technology, and applied them to inter-organizational electronic commerce. Based on such analyses, we attempted to draw implications and guidelines for the pursuit of industrial level electronic commerce.

• 한국정보시스템학회지:정보시스템연구
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• 제11권1호
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• pp.175-198
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• 2002

This paper is to develop a security module for electronic approval systems. Electronic documents are created, transmitted and saved in the company's intranet computer network. Transmitting electronic documents, however, brings us a security problem. Communications among various computer systems are exposed to many security threats. Those threats are eavesdropping, repudiation, replay back etc. The main purpose of this paper is to develop a module which provides the security of electronic documents while they are passed from one place to another This paper applies Multi-Level security to the electronic approval system that guarantees security of electronic documents from many threats. Multi-Level security controls the access to the documents by granting security level to subject users and object electronic documents. To prevent possible replay back attacks, this paper also uses one time password to the system. The security module is composed of client program and server one. The module was developed using Microsoft Visual Basic 6.0 and Microsoft SQL Server 7.0. The code uses Richard Bondi's WCCO(Wiley CryptoAPI COM Objects) library functions which enables Visual Basic to access Microsoft CryptoAPI.