• Journal of Information Management
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• v.35 no.4
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• pp.57-80
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• 2004

Lately, most of the libraries subscribe electronic resources such as e-journals, under the license contracts for the access and use of these electronic resources. It was found that the management of licensed electronic resources in the library has become one of the major problems due to the lack of proper metadata elements in the existing management system of electronic resources. The purpose of the study is to establish metadata for licensed electronic resources.

• International Journal of Computer Science & Network Security
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• v.22 no.12
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• pp.71-78
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• 2022

Electronic measuring devices have an important role in agricultural projects and in various fields. Electronic measuring devices play a vital role in controlling and saving soil information. They are designed to measure the temperature, acidity and moisture of the soil. In this paper, a new methodology to manage irrigation and soil fertility using an electronic system is proposed. This is designed to operate the electronic irrigation and adds inorganic fertilizers automatically. This paper also explains the concept of remote management and control of agricultural projects using electronic soil measurement devices. The proposed methodology is aimed at managing the electronic irrigation process, reading the moisture percentage, elements of soil and controlling the addition of inorganic fertilizers. The system also helps in sending alert messages to the user when an error occurs in measuring the percentage of soil moisture specified for crop and a warning message when change happens to the fertility of soil as many workers find difficulty in daily checking of soil and operating agricultural machines such as irrigation machine and soil fertilizing machine, especially in large projects.

• Journal of the Microelectronics and Packaging Society
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• v.23 no.2
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• pp.1-10
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• 2016

This paper reports the trends of researches and technologies of electronic packaging using graphene. Electronic packaging is to provide the signal and electrical current among electronic components, to remove the heat in electronic systems or components, to protect and support the electronic components from external environment. As the required functions and performances of electronic systems or components increase, the electronic packaging has been intensively attracted attention. Therefore, technologies such as miniaturization, high density, Pb-free material, high reliability, heat dissipation and so on, are required in electronic packaging. Recently, graphene, which is a single two-dimensional layer of carbon atoms, has been extensively investigated because of its superior mechanical, electrical and thermal properties. Until now, many studies have been reported the applications using graphene such as flexible display, electrode, super capacitor, composite materials and so on. In this paper, we will introduce and discuss various studies on recent technologies of electronic packaging using graphene for solving the required issues.

• The Journal of Society for e-Business Studies
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• v.6 no.3
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• pp.41-61
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• 2001

Many markets are forecast to see significant changes due to the growth of electronic commerce made possible by the internet. The way of doing business with internet affects the market mechanism. It is now over 10 years since Malone et al(1987) set out their hypothesis on electronic markets, and electronic hierarchies. An electronic market is an interorganizational information system through which multiple buyers and sellers interact to accomplish one or more of the following market-making activities. And they predicted that markets evolve toward electronic markets, by reducing search cost, which may result in significantly. higher price competition among sellers and therefore lower prices for buyers. And the degree of two factors; asset specificity and uncertainty, affect the market mechanism. Products with low asset specificity and low uncertainty are compatible with a market relationship while the greater the asset specificity and uncertainty, the more likely it is to favour a hierarchical structure. Based on the these researches, we observed and analyzed a case study of market mechanism in Internet business. We found the fact that even though Internet could make the business environment in which lots of buyers and suppliers participate, electronic market will evolve market mechanism. 1 analyzed two factors, which affected market evolution. First, When Asset specificity is low in electronic commerce, market structure should be preferred to hierarchical structure. Second, When transaction uncertainty is low in electronic commerce, market structure should be preferred In hierarchical structure. This research covers conceptual and empirical aspects on electronic market structure. Future research should be variously done about the influential factors of electronic market mechanism.

• Journal of the Korean Society for Library and Information Science
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• v.38 no.4
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• pp.193-218
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• 2004

Electronic records created by Korean Government Agencies in the course of their business activities have been increased rapidly since e-Government had been implemented. With more government business being, conducted electronically, the importance of managing electronic records effectively, appropriately, and trustily has never been greater. For managing electronic records accountably and trustily, it to necessary to develop relevant and detail electronic records management regulation. For that reason, this study is to analyze Korean Acts and Foreign(USA, UK, Canada Australia) Acts, Regulations, or Policies related to electronic records management and to suggest legislative requirements which could guide to develop regulation or Act of electronic records management.

• The Journal of the Korea Contents Association
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• v.5 no.6
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• pp.120-128
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• 2005

One of the most secure ways of maintaining the confidentiality and integrity of electronic information is to use electronic signatures. So, in this paper, we developed guideline on electronic signatures for EMR(electronic medical record) based on the Medical Law and the Electronic Signature Act. This guideline is intended to introduce EMR easily in the medical field and to facilitate the promotion of EMR. We developed it through consulting from the advisory committee that was made up of experts in the fields of medical record, EMR system and electronic signatures. The contents of the guideline consist of subject and time stamp of electronic signatures, validity of a certificate, management of electronic signatures and custody and management of EMR. In the future, we will develop practical cases and promote educations and publicities of them to use in the medical institutes and EMR system related industries.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.33 no.5
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• pp.373-379
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• 2020

In this study, TiN-coated cBN (cubic-structure boron nitride) powders were successfully synthesized by a sol-gel method using titanium (IV) isopropoxide (TTIP) and by controlling the heat treatment conditions. After the sol-gel process, amorphous nano-sized TiO_x was uniformly coated on the surface of cBN powder particles. The obtained TiO_x-coated cBN powders were heated at 1,000~1,300℃ for 1 or 6 h in a flow of 95%N₂-5%H₂ mixed gas. With increasing temperature, the chemical composition of the TiO_x coating layer changed in the order of TiO₂→Ti₆O₁₁→Ti₄O₇→TiN due to reduction of the Ti ions. The TiN coating layer was observable in the samples heated at 1,200℃ and appeared as the main phase in the sample heated at 1,300℃. The resulting thickness of the TiN coating layer of the sample heated at 1,300℃ was approximately 45~50 nm.

• Journal of Power Electronics
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• v.14 no.2
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• pp.257-264
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• 2014

A novel converter-free AC LED driver that is highly resistant to the fluctuation of AC voltage is proposed in this study. By removing large passive components, such as the bulky capacitor and the large-value inductor, the integration of the driver circuit is enhanced while the driving current remains stable. The proposed circuit provides LED lamps with a driving current that can follow the sinusoid waveform to obtain a very high power factor (PF) and low total harmonic distortion (THD). The LED input current produced by this driving current is insensitive to fluctuations in the AC voltage. Users will thus not feel that LED lamps are flashing during the fluctuation. Experiment results indicate that the proposed system can obtain PF of 0.999 and THD as low as 3.3% for a five-string 6 W LED load under 220 V at 50 Hz.

• The Journal of Information Technology
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• v.4 no.3
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• pp.1-17
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• 2001

This study is to examine some legal problems of cyber trade transactions and to suggest some policy implications to vitalize cyber trade by internet accomplishes electronic business from all process integration of production, marketing and customer service. However, there are some legal problems for the electronic commerce to be used in international trade activities such as trade contract transport documents and payment systems by internet. First international trade rules have to be legislated so that electronic documents has same legal function like traditional documents. Also electronic signature must has authenticity, integrity, non-repudiation, writing and confidentiality. Second, traditionally international payment systems such as letters of credits, remittance, documentary collections and open account have been operated as an important and popular method of payment. In the modern world of electronic commerce, information technology has made it possible to pay for the sale of goods and services over the internet. The payment methods such as Credit Card, Debit Card, Electronic Cash, Electronic Fund Transfers enable partly sellers, buyers and service providers to settle payment electronically through the internet. To settle the problems of payment systems, the security requirements for safe electronic Payments such as authenticity, integrity, non-repudiation have to be guaranteed. Also, electronic data interchange in transport documents has to be adopted and negotiability of electronic bills of lading has to be guaranteed. Electronic payment systems through SWIFT enable the sellers and the buyers to conduct and settle international business-to-business electronic commerce in case of solving the above problems and harmonizing the Bolero project.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.20 no.3
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• pp.245-249
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• 2007

The liquid crystal display (LCD) applications treated on the organic overcoat thin film surfaces by ion beam irradiation was successfully studied. The good LC aligning capabilities treated on the organic overcoat thin film surfaces with ion beam exposure of $60^{\circ}$ for 2 min above ion beam energy of 1200 eV can be achieved. But, the alignment of defect of NLC on the organic overcoat surface at low energy of 600 eV was measured. The pretilt angle of NLC on the organic overcoat thin film surface with ion beam exposure of $60^{\circ}$ for 2 min at energy of 1800 eV was measured about 1 degree. Finally, the good thermal stability of LC alignment on the organic overcoat thin film surface with ion beam exposure of $60^{\circ}$ for 2 min until annealing temperature of $200^{\circ}C$ can be measured.