• Proceedings of the KIEE Conference
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• 2004.10a
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• pp.215-217
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• 2004

This paper shows the analysis of the inductive power transfer system in conjunction with series resonant converter operating variable high frequency. Of particular interest is the sensitivity of the complete system to variations in operational frequency and parameters. In inductive power transfer system, electrical power is transferred from a primary winding in the form of a coil or track, to one or more isolated pick-up coils that may relative to the primary. The ability to transmit power without contact enables high reliability and easy maintenance that allows inductive power transfer system to be implemented in hostile environments. This technology has found application in many fields such as electric vehicles, PRT(Personal Rapid Transit) etc. The coupling between the primary and secondary is then presented to include the effects of parameter and operational frequency variation.

• Proceedings of the KIEE Conference
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• 2003.04a
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• pp.163-165
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• 2003

Over the past several years, the application extent of the real-time systems is being expanded with the progress of civilization. An effort to minimize power consumption at the system is being accomplished in several fields from the design of an analog/digital circuit up to the device level Things of this effort have included the power optimum-technique to minimize power consumption at the digital logic circuit and the dynamic managed skill by means o( the decision of the operating system. In this paper, we designed of low power system by using Power-optimized method. As an effective low-power design, we designed the low power system which it has a monitoring system within the main board and a personal computer.

• Journal of English Language & Literature
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• v.55 no.2
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• pp.293-314
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• 2009

Leslie Marmon Silko's Storyteller does not belong to a typical category of books, for it looks more like a family album with photographs, poems and Pueblo narratives as well as short stories authored by her. This 'book' without any chapters defies a traditional concept of books we are familiar with. In addition to refusing to be labelled as a conventional book, I argue, Storyteller defies the tradition of Western personal writing in that it shows the collective power of stories. That is, stories have the collective power which is impersonal beyond personal, internalized identity. It does not mean, however, the collective power comes from groups rather than individuals. It is not the conventional opposition of group and individual but that of group and collectiveness that matters here. I draw a distinction between group and collectiveness on the ground that the former actually groups individuals into categories with which individuals identify themselves. It is not group but collectiveness where stories find their power. "Storyteller," the first of eight short stories in the book, tells the story of an unnamed protagonist, a Yupik Eskimo girl, who takes revenge of her parents who died after drinking poisoned alcohol sold by a white storeman. There are four layers of stories in this short story. The first one is the old man's story of a blue glacier bear; the second one is a revenge story of the Yupik girl; the third one is a story told by the girl to the attorney after being arrested for the death of a storeman. And the final one is the story told to us by Silko, entitled "Storyteller." Although the structure of story within story resembles a technique of metafiction at a glance, it surely is a characteristic of Pueblo narratives in general, according to Silko. This kind of stories within stories refers to the collective power of story which, like a spider's web with many little threads radiating from the center and crisscrossing one another, is also a characteristic of stories on the Web today.

• The Journal of Information Systems
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• v.21 no.4
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• pp.55-79
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• 2012

LBS(Location-Based Service) is one of the smartphone application services which has been receiving great attention recently. Various applications of smartphone use LBS to provide innovative services. However, use of LBS raises privacy concerns because the location information of users is constantly exposed. Privacy calculus perspective attempts to understand the characteristics of the user's privacy. It is based on the risk-benefit analysis in the economics' perspective. That is, when the benefit expected through personal information disclosure is higher than risk, we are willing to provide personal information. This research suggested a research model based on the privacy calculus perspective to clarify the effect of information disclosure intention of smartphone LBS application users. Based on the main factors of privacy calculus, perception of privacy risk and privacy benefit, the relationship of the perceived value and the information disclosure intention was empirically analyzed by utilizing structural equation modeling(SEM) methodology. According to the results of the empirical analysis, it was found that all relations have statistically significant explanatory power except the relation between privacy concern and information disclosure intention. This study showed a strong evidence of antecedent factors based on privacy calculus of personal information disclosure in smartphone LBS applications.

• Journal of Radiation Protection and Research
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• v.40 no.4
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• pp.261-266
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• 2015

As performance of electronic personal dosimeter (EPD) used for auxiliary personal dosimeter in nuclear power plants (NPPs) has been being continuously improved, we investigated application cases in Korea and other countries and also tested it in NPPs to assess the performance of EPD for external radiation dosimetry. Result of performance tests done in domestic NPPs was similar to those obtained by IAEA in cooperation with EURADOS (IAEA-TECDOC-1564). In addition, EPD/TLD dose ratio has shown similar tendency of EPD/Film-badge dose ratio from the research by the Japan Atomic Power Company (JAPC) and EPD provided more conservative value than TLD or Film-badge. Although some EPD's failures have been discussed, EPD has shown continuous improvement according to the report of Institute of Nuclear Power Operation (INPO) and data from domestic NPPs. In conclusion, It is considered that the general performance of EPD is adequate for external radiation dosimetry compared with that of TLD, providing appropriate performance checking procedure and alternative measures for functional failure.

• The Journal of the Korea Contents Association
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• v.18 no.11
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• pp.13-29
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• 2018

An increasing number of people in their lifes have used personal web-casting services as a new type of broadcasting, whose power has grown in the broadcasting market and industry. Nevertheless, limited research concerning personal web-casting has been conducted so far. This research explored consumption structures of personal web-casting users in terms of their genre usage based on the theoretical concept of genre repertoire. And it also examined what determinants have influences on these structures by focusing on as an representative case in South Korea. The findings showed that sensation seeking, motivation for getting information and social presence affect genre repertoire of personal web-casting users. They also indicated that there is a moderating effect of social presence in the relationship between motivation for joy and genre repertoire.

• Proceedings of the KIEE Conference
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• 1990.11a
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• pp.252-255
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• 1990

Analyzing and simulating of today's complex electrical networks require the use of computer-aided engineering tools. In recent years, the rapid advances in micro-computer hardware technology have increased the availability of power application software on the personal computer, once the domain of mainframes and minicomputers, enabling efficient and cost-effective power system analysis. An interactive simulation and analysis software for a power system is developed and presented in this paper. The software is written in PASCAL and is designed for PC use. This paper presents an integrated software package to run PC-DOS for the analysis of electric power networks. The software is menu driven and controlled by prompts. These programs are intended to help users understand the process of power system analysis and design.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.4
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• pp.553-558
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• 2011

The smart grid is an intelligent electric power network in which a digital communication network is integrated into the existing electric power system. This enhances the efficiency of the electric use by supplying and controlling the electric power through the two-way communication between the utility and the electric customer. In this paper, to support the smart grid, a computer-based solution which collects the three-phase electric power data based on the LPT Communication is designed, and then its prototype is made.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.114.6-114
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• 2001

According to expansion of wireless communication system and mobile device, interest has been growing in personal navigation system integrated with wireless system. In portable consumer electronics, such as cellular phones, GPS and PDA, one of major design factors is the power consumption. Solutions of reducing the power dissipation are low voltage, low system clock power management and so on. This paper develops a GPS receiver based on the advanced power management algorithm that achieves very low average power consumption. Both RF and DSP chips are powered down and reactivated only when the position fixing is required. In order to run, the developed includes the RTC calibration function and the fast reacquisition function using XMC (eXtended Multiple Correlator) ...

• Proceedings of the KIPE Conference
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• 2005.07a
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• pp.211-213
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• 2005

RPA(Remelt Power Analysis)and RC(Remote Control) System have been researched from former several decade for a various power rate system a efficent power service and rising of personal expenses, etc. But the existing RPA and RC System have disadventage which are complex and high cost to install an individual communication network of electricity company This paper proposed a new type of RPA and RC System using PLC with Internet. and made components for proposal system so we made the PLC modem, the digital watt-hour meter with a build in PLC modem and the softwere on server computer for establishing the proposal system. The bit rate of the proposed system is about 4800bps.