• ETRI Journal
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• v.28 no.3
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• pp.320-328
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• 2006

Using biometrics to verify a person's identity has several advantages over the present practice of personal identification numbers (PINs) and passwords. To gain maximum security in a verification system using biometrics, the computation of the verification as well as the storing of the biometric pattern has to take place in a smart card. However, there is an open issue of integrating biometrics into a smart card because of its limited resources (processing power and memory space). In this paper, we propose a speaker verification algorithm using a support vector machine (SVM) with a very few features, and implemented it on a 32-bit smart card. The proposed algorithm can reduce the required memory space by a factor of more than 100 and can be executed in real-time. Also, we propose a hardware design for the algorithm on a field-programmable gate array (FPGA)-based platform. Based on the experimental results, our SVM solution can provide superior performance over typical speaker verification solutions. Furthermore, our FPGA-based solution can achieve a speed-up of 50 times over a software-based solution.

• Journal of East-West Nursing Research
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• v.21 no.2
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• pp.119-125
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• 2015

Purpose: The purpose of this study was to identify the impact of activities of daily living, instrumental activities of daily living and depression on life satisfaction among aged women. Methods: The sample consisted of 309 aged women of over 60. Data were analyzed using t-test, ANOVA, Pearson correlation coefficient and multiple regression analysis. Results: Significant factors affecting the life satisfaction were spouse, religion, perceived health status, age, and depression. The most significant variables among them were depression and perceived health status. The explanatory power on life satisfaction was 57% in regression model. Conclusion: Depression and perceived health status are important variables to influence on life satisfaction. Therefore, it is suggested that nursing intervention to reduce or prevent depression and enhance health status should be developed to promote quality of life in aged women.

• Journal of Korean Academy of Nursing
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• v.34 no.1
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• pp.141-149
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• 2004

Purpose: To identify the status of regular cervical cancer screening practices among middle-aged women, the associations between regular practice and research factors, and the predictive model and factors effecting such behavior was studied. Method: Two hundred women, aged 40 to 60, were selected by convenience in one urban area of Seoul. They were asked about their regular attendance for screening, knowledge of cancer and screening, health belief, health self-determination index and certain personal factors. Result: Approximately 54.5% of the women had periodic screening tests every 6 months to 2 years. Their knowledge of cervical cancer and health belief were at the medium level of each scale, but their health self-determination scores (HSDI) were low. Some influencing factors, and their cancer odds ratio were identified through univariate regression analysis. These variables were included in a predictive model, and this model proved to have enough fit and classification power (83.5%). In this model, the financial state, self-belief and self-determination scores were found to be significant. Conclusion: Middle-age women's intrinsic motivation for healthy behavior was found to be low in those who felt to be in a poor financial state, had higher perceived barriers, lower perceived benefits and a lower prevalence of undergoing regular screening test.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.38 no.6
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• pp.82-92
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• 2001

This paper describes implementation of an embedded 32-Bit RISC core for portable communication/information equipment, such as cellular phones, PDA(Personal Digital Assistants), notebook, etc. The RISC core implements the ARM$\circled$V 4 instruction set, operates with typical 5-stage pipeline. It supports Thumb code to improve the code density, and uses the dynamic power management method of pipeline registers. It was modeled and simulated in RTL level using VHDL, and verified with ARMulator of ADS (Arm Developer Suite) and had average CPI of 1.44. The core is synthesized automatically using the cell library based on $0.6{\mu}m$ CMOS 1-poly 3-metal CMOS technology. It consists of about 41,000 gates and the clock frequency is expected to be above 45 MHz.

• Management & Information Systems Review
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• v.7
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• pp.53-68
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• 2001

In this paper, Computer Games is still going strong. We are still making incremental improvements to the computer game, mobile game, but it seems to have settled into a fairly standard version and layout. Many games have passed through our life over the past couple of years. A number of the best have been written about in these games. Unfortunately there are too many games and too little time, and make some hard choices about what games actually play regularly. This is obviously a very personal list of favorite games, and change fairly regularly as new games rotate in and old games are given a rest for a while. It brings ours to the question of what we look for in a game, and why choose one game to play over another? What does make a game good enough to play time after time? Therefore, a game has to have, above all, interesting tactics and strategy, but also we like originality and simplicity. There is also a certain quality that is very difficult to define that makes some games beautiful. At last in this issue we return to mobile oriented games. This paper will discuss Computer Game Conditions in terms of the different games, components, and Design amd Implementation of Computer Game Menu Simulation based on 4GL, PowerBuilder.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.2
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• pp.456-464
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• 2016

NCS development for construction of marine terminal structure was carried out through following procedures such as analysis on characteristics, analysis on duty, development of the first draft for standards, validation of industry sites, duty competency standards through expert committee, and utilizing package. The results were as follows. Firstly, duty competency was classified as levels from 3 to 7. Educational training institutions were followed by 22 universities, 21 colleges, 16 graduate schools, and 10 high schools. Secondly, developed standards were consisted of duty and competency unit. The name of duty was construction of marine terminal structure and competency units were consisted of 9 items as survey on economic effect, evaluation of conditions on construction environment, plan for construction of structure, construction of transfer, mooring, and power equipment, and construction, startup test, and maintenance of terminal structure. 33 competency unit elements below 9 competency units were developed. Thirdly, utilizing package was developed into 3 areas of life-long career path, training criteria, and guidelines for exam according to national competency standards for in order to develop development of labor's career and perform personal management such as hiring and promotion in industry sites.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.1C
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• pp.113-119
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• 2009

The training sequence with the appropriate length for equalization and initial synchronization is necessary before sending the pure data in the burst transmission type DS-UWB system. The length of the training sequence is one of the factors which make throughput decreased. The noble structure with the variable length of the training sequence whose length can be adaptively tailored according to the channel conditions (CM1,CM2,CM3,CM4) in the DS-USB systems is proposed. This structure can increase the throughput without sacrificing the performance than the method with fixed length of training sequence considering the worst case channel conditions. Simulation results under IEEE 802.15.3a channel model show that the proposed scheme can achieve higher throughput than a conventional one with the slight loss of BER performance. And this structure can reduce the computation complexity and power consumption with selecting the short length of the training sequence.

• Journal of Ocean Engineering and Technology
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• v.11 no.3
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• pp.191-199
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• 1997

This paper develops the piece creation of Hull-structure using PC(Personal Computer) which is from CADRA of graphic program. Large-sized shipbuilding yard was carried out on the development of CNC(Computer Numerical Control) auto cutting system used in super S/W such as AUTODEF, TRIBON. But this system needs lots of expenses and high technician, and only used in large-sized shipbuilding yard, not medium-sized and small-sized shipbuilding yard. To bring up the small and medium-sized ship building yard lacking a little competitive power. Small and medium-sized shipbuilding yard need the piece creation of Hull Structure S/W which is joined with the CADRA. Therefore the piece creation of Hull-Structure S/W is developed to joined with the CADRA of graphic S/W to create the piece to be needed on as auto cutting process using PC.

• Journal of Electrical Engineering and Technology
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• v.4 no.1
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• pp.143-148
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• 2009

About 70% of Korea consists of mountainous areas, and during the construction of many roads and railroads, cut slopes are inevitably formed. The rainy season, frost heaving in winter, and thawing in spring can all cause rockfalls and landslides. The failure of these slopes is increasing every year, causing damage to vehicles, personal injury and even death. To protect people and property from such damage, a real-time monitoring system is needed to detect the early stages of slope failures. The GMG placed TRS sensor units in the slopes to monitor them in real-time. But due to its reliance on data lines and power lines, the system is vulnerable to lightning damage. The whole system can be damaged by a single lighting strike. Consequently, for the purposes of this paper we propose the use of the Ubiquitous Sensor Network (USN) which follows the IEEE 802.1.4. By using the USN system we can minimize lightning damage and can monitor the movement of the slopes consistently.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.17 no.1
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• pp.103-111
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• 2003

With the proliferation of nonlinear loads such as personal computer in an educational building, high neutral harmonic currents have been observed. High neutral currents in three-phase four ire distribution power systems can cause tots of harmonic problems such as overloaded neutral conductors and malfunction of protective equipment. On-site measurements of harmonic currents and voltages were made and the corresponding equivalent circuits was developed. The circuit model under study was simulated numerically and graphically through the use of the software MATLAB. Simulation results verifying the effect of a single-tuned passive filter for the neutral harmonic current reduction are presented.