• 한국IT서비스학회지
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• 제20권2호
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• pp.57-76
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• 2021

Today's ERP system has become a core system of IT·SW that not only supports and manages enterprise resources efficiently, but also encompasses major business tasks. In other words, the ERP system is an essential strategic element for the survival of a company as a powerful means to innovate the management of an organization. This study analyzed the impact on the utilization of IT·SW from the perspective of the entire organization's process without limiting the performance evaluation of the ERP system itself, which is a core system of a company. The measurement data for evaluating the performance of the ERP system was the 2018 domestic company IT·SW utilization survey result report (subject to survey : 3,017 domestic companies with 10 or more employees). Based on this data, this study analyzed the impact of the ERP system on the entire enterprise's IT·SW utilization. In particular, attention was paid to whether there would be a difference in the use of IT·SW if the type of ERP system introduction was changed through the improvement of the business process of the company. Multiple regression analysis was performed using the statistical package SPSS 25. As a result, among the ERP system introduction types, the greatest degree of (+)influence on the company's IT·SW utilization is when the ERP package SW or ASP service is used as it is. Although the difference is insignificant, the second case was to build an ERP system through self-development or outsourcing, followed by customizing the package SW or system through self-development or outsourcing. Through the results of this study, it is expected that the organization will improve the business process and use the standard ERP package SW as it is without modification, thereby effectively enhancing the use of IT·SW of the company and leading to management performance.

• 한국정보통신학회논문지
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• 제26권6호
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• pp.872-880
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• 2022

본 논문은 패키지 투어에 참여하는 여행자들에게 관광 명소에 대한 정보를 디지털 게임 기반 학습(DGBL) 방식으로 제공하는 모바일 애플리케이션 개발의 핵심인 콘텐츠 관리 시스템(CMS)의 설계 및 구현 결과를 담고 있다. 설계 측면에서 이 CMS는 여행자 정보, 관광 명소 정보, 질문과 점수 구성 등 학습 게임 콘텐츠를 저장하는 데이터베이스, 저장 콘텐츠를 관리하기 위한 웹 애플리케이션, 그리고 모바일 학습 게임과의 연동을 위한 Rest API로 구성된다. CMS 구현을 위해 PHP 프로그래밍 언어와 MySQL 데이터베이스 관리 시스템을 사용하였으며, 성능 평가 결과 CMS와 데이터베이스 간에 0.77초에서 1.4초 사이의 평균 응답 시간을 보여줌을 확인하였다. 본 논문에서 개발한 CMS는 패키지 투어 여행자를 위한 모바일 학습 게임 구현에 실제 적용할 예정이며, 패키지 투어 그룹이 달라지더라도 게임을 재구성할 필요가 없는 융통성을 제공함을 알 수 있다.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2004년도 추계 종합학술대회 논문집
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• pp.291-295
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• 2004

XML 문서가 웹 문서의 표준으로 자리 잡음에 따라 많은 정보들이 XML 문서 형식으로 표현되면서 XML 문서의 보안에 관한 요구도 커지고 있다. 현재까지의 XML 보안에 관한 연구는 암호화와 전자 서명 같은 통신상의 보안에 관한 연구가 중심이 되었으나 XML 문서가 방대해지고 복잡해짐에 따라 XML 문서에 대한 통신상의 보안 뿐 아니라 관리적인 보안이 필요하게 되었다. 하지만 XML 문서의 암호화는 단순한 통신상의 보안만을 제공할 뿐 관리적 보안 요소인 다양한 사용자와 다양한 접근 권한 정책을 반영하지 못하고 있다. 본 논문에서는 XML 문서의 보안을 위해 주체별 권한 정책을 반영한 접근 제어를 보장하는 주체 기반 XML 문서의 암호화 기법을 제안한다. 접근 제어를 보장하는 암호화를 수행함으로써 다양한 사용자의 다양한 권한 정책을 반영할 수 있다. 또한 제안하는 암호화 기법은 전처리 과정을 이용하여 기존의 접근 제어 기법의 복잡한 접근 평가 비용을 줄일 수 있다.

• 한국기계가공학회지
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• 제7권1호
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• pp.47-52
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• 2008

We present a 3-D profiler specially devised for the profile measurement of rough surfaces that are difficult to be measured with conventional non-contact interferometer. The profiler comprises multiple two-point-diffraction sources made of single-mode optical fibers. Test measurement proves that the proposed profiler is well suited for the warpage inspection of microelectronics components with rough surface, such as unpolished backsides of silicon wafers and plastic molds of integrated-circuit chip package.

• Journal of Welding and Joining
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• 제22권1호
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• pp.65-70
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• 2004

A soldering process with longitudinal ultrasonic is conducted in this work using the Au bump and substrate. Localized heating of the solder is achieved and the stirring action due to the ultrasonic is found to influence the bond strength and microstructure of the eutectic solder The acceptable bonding condition is determined from the tensile strength. Since the multiple bonds can be formed simultaneously with localized heating, the proposed ultrasonic soldering method appears to be applicable to the high-density electronic package.

• 한국환경과학회지
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• 제23권3호
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• pp.387-397
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• 2014

This study is carried out to propose an empirical equation which can promptly predict the aircraft noise level at a specific point (a receptor) near Jeju international airport by using the information of the flight path data. For this purpose, Analyses of multiple linear regression with the slant distances (SD) calculated from the gate analyses of the flight path data, aircraft noise certification levels with unit of EPNL(effective perceived noise level) and noise levels measured at receptors are performed by SPSS package. From these regression analyses for approach and departure of aircraft, we can propose empirical equations which is statistically significant. The noise levels predicted by these empirical equations are highly correlated the measured data.

• 대한가정학회지
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• 제40권2호
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• pp.175-186
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• 2002

The purpose of this study was to examine the influences of goal-oriented value to the financial management and financial satisfaction of female college students. The samples were selected from 541 female collegians. Data analysed were carried out using SAS package. Statistics used for data analysis was Cronbach'$\alpha$ coefficient, multiple regression, Pearson correlation analysis, and path analysis. The results were summarized as follows : First, resulting from the multiple regression analysis, the goal-oriented value had positive effects to the financial management - planning, implementing, evaluating, and saving - of female collegians. And the goal-oriented value had not indirectly but directly positive effects to the financial satisfaction. Second, the variables that have significant influence on the financial satisfaction were the level of household income, goal-oriented value, implementing, and monthly personal allowance.

• 복식
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• 제52권5호
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• pp.187-196
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• 2002

The purpose of this study was to clarify differences in their perceptions in relation to clothing quality and service quality of internet shopping mall according to classified consumer groups by clothing involvement. The 248 questionnaires were collected from female and male students of university who experienced browsing at the website for clothing shopping. Using SPSS Win package, Cronbach's $\alpha$, frequency. percentage, factor analysis, cluster analysis, ANOVA, SNK multiple range test and multiple regression analysis were performed. The results could be summarized as follows. First. the dimension of clothing involvement divided consumers into three different groups: fashion/importance group, pleasure group and symbol group. Second, the significant differences among the classified clothing involvement groups were found in the perceptions in relation to clothing product quality and service quality of internet shopping mall. Third. pleasure and symbol of clothing involvement, physical attributes and expressive goals of clothing quality, and product assortment and promotion of service quality in the internet shopping mall had an effect on the purchase intend of internet shopping mall.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.1141-1142
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• 2011

An electrical vehicle (EV) is a huge issue in the automotive industry. The EV have many electrical units: electric motors, batteries, converters, ets. The DC power distribution system (PDS) is essential for the EV. The DC PDS offers many advantages. However, multiple loads in the DC PDS may affect the severe instability on the DC bus voltage. Therefore, a voltage bus conditioner (VBC) may use the DC PDS. The VBC is used to mitigate the voltage transient on the bus. In this paper, sliding mode controller (SMC) is designed for the VBC of DC PDS in the EV. The simulation results by PISM simulation package are presented for validating the proposed control technique.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.1234-1235
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• 2011

A DC Power Distribution Systems(DC PDS) are widely used in telecommunication system, electric vehicle, aircraft, military system, etc. In the DC PDS, DC bus voltage instability may be occurred by the operation of multiple loads such as pulsed power load, motor drive system, and constant power loads. To damp the transients of the DC bus voltage, the Voltage Bus Conditioner(VBC) with the PI compensator is used. In this paper, the validity of the proposed VBC system is verified by PSIM simulation package.