• Korean Journal of Mathematics
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• 제23권4호
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• pp.643-654
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• 2015

This study analyses the cross-application system, one of the diversified college admission processes, based on the entrance examination system by the reorganization of the education curriculum. In addition, this study suggests an improvement direction of mathematics education for students who cross-apply by comparing and analysing academic results in Calculus for those students entering universities through the cross-application system.

• 한국유체기계학회 논문집
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• 제9권3호
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• pp.36-43
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• 2006

Recently, micro hydropower and it's useful utilization are taking a growing interest as a countermeasure of global worming by carbon dioxide and exhaustion of fossil fuel. The purpose of this study is to investigate the possibility of extracting micro hydropower wasted by a valve in water supply system using micro cross-flow hydraulic turbine. In order to fulfill the functions of controlling flow rate and pressure in substitute for the valve, air and water are supplied into an air suction hole which is installed on the side wall of micro cross-flow hydraulic turbine. The results show that in case of supplying a lot of air into the air suction hole, about 50% of flow rate and relatively high value of loss coefficient are controlled by the turbine. Moreover, including high possibility of applying the micro cross-flow turbine to water supply system, extended application of the turbine to the water discharge system of drainage and irrigation canal.

• 산업공학
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• 제19권1호
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• pp.26-33
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• 2006

Many Firms consider the application of a cross-docking system to reduce inventory and lead-time. However, most studies mainly concentrate on the design of a cross-docking system. This study presents the method that selects the cross-docking center under the existing logistics network. Describing the operation environment to apply the cross-docking system, the selection criteria of the cross-docking center, and the main constraints of transportation planning under the environment of multi-level logistics network, we define the selection problem of the cross-docking center applied to a logistics field. We also define the simulation model that can analyze variously the cross-docking volume and develop the selection methodology of the cross-docking center. The simulation model presents the algorithm and influence factors of the cross-docking system, the decision criteria of the system, policy parameter, and input data. In addition, this study analyzes the effect of increasing the number of simultaneous receiving and shipping docks, and the efficiency of the overnight transportation and cross-docking by evaluating each scenario after simulating the scenarios with the practical data of the logistics field.

• 한국인터넷방송통신학회논문지
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• 제11권1호
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• pp.193-198
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• 2011

최근 스마트폰의 급속한 보급으로 인해 모바일 소셜 네트워크 서비스가 점차 확산되고 있다. 본 논문은 소셜 응용을 위한 크로스-플랫폼 모바일 시스템 구조를 제안한다. 본 논문의 설계 목표는 1) 다양한 소셜 네트워크 서비스가 제공하는 데이터를 통합하고 사용자의 문맥(context)에 따라 정보를 필터링함으로써 개인 맞춤형 데이터를 제공하고 2) 다양한 스마트폰에 공통적으로 적용할 수 있는 응용을 개발하기 위한 크로스-플랫폼 구조를 제공한다. 제안한 시스템을 검증하기 위해 Flickr와 Picasa와 같은 소셜 서비스로부터 사진을 수집 및 필터링하여 스마트폰에 출력하는 응용을 구현하였다.

• 한국산학기술학회논문지
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• 제15권4호
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• pp.2511-2518
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• 2014

레일 매립형 궤도시스템은 연속레일지지방식으로 하중분산 효과가 크며, 궤도부재에 발생하는 응력이 매우 작다. 다양한 장점을 갖고 있는 레일 매립형 궤도는 국내에 적용사례가 드물며, 고속 운행선 적용을 위한 연구는 매우 미흡하다. 본 논문에서는 고속운행선에서의 레일 매립형 궤도시스템 적용을 위한 기초연구로써, 실내시험을 통한 수직강성을 도출하였으며, 도출된 강성과 이론해석을 통해 최적단면을 도출하였다.

• 전기의세계
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• 제27권1호
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• pp.10-19
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• 1978

Microprocessor의 출현은 전자계산기 구조에 일대혁명을 일으볐으며 최근 몇년간 microcomputer가 세게적인 화제의 초점을 이루고 있고 그 응용은 극히 강력한 기대와 관심을 불러 일으키고 있다. Microcomputer의 가장 큰 특징은 micrs computer 자체가 한 system의 component로 사용될 수 있다는 점이며 application software의 개발여하에 따라 무한한 가능성을 약속해 주고 있다. 본 논문에서는 M6800 application software를 개발하기 위하여 M6800 crossassembler를 작성하였다. M6800은 Motorola에서 개발한 micrs computer로 전세계적으로 가장 널리 사용되고 있는 것 중의 하나이다. 본 논문의 2장의 첫 부분에서는 M6800 assembly language가 소개되고 두번째 부분에서는 cross-assembler의 기본적인 특성이 기술되고 있다.

• 한국진공학회지
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• 제5권2호
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• pp.99-106
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• 1996

Two types of regularization method (singular system and HMP approaches) for generating depth-concentration profiles from angle-resolved XPS data were evaluated. Both approaches showed qualitatively similar results although they employed different numerical algorithms. The application of the regularization method to simulated data demonhstrates its excellent utility for the complex depth profile system . It includes the stable restoration of depth-concentration profiles from the data with considerable random error and the self choice of smoothing parameter that is imperative for the successful application of the regularization method. The self choice of smoothing parameter is based on generalized cross-validation method which lets the data themselves choose the optimal value of the parameter.

• 분석과학
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• 제8권4호
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• pp.707-714
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• 1995

Two types of regularization method (singular system and HMP approaches) for generating depth-concentration profiles from angle-resolved XPS data were evaluated. Both approaches showed qualitatively similar results although they employed different numerical algorithms. The application of the regularization method to simulated data demonstrates its excellent utility for the complex depth profile system. It includes the stable restoration of the depth-concentration profiles from the data with considerable random error and the self choice of smoothing parameter that is imperative for the successful application of the regularization method. The self choice of smoothing parameter is based on generalized cross-validation method which lets the data themselves choose the optimal value of the parameter.

• 대한전기학회논문지:시스템및제어부문D
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• 제55권5호
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• pp.236-239
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• 2006

A wireless MAC scheduler that provides a high level of quality-of-service (QoS) for video-on-demand (VOD) applications while achieving a reasonable level of system throughput is proposed. The proposed scheduler considers both channel qualities of mobiles and the urgency of real-time packets coming from VOD applications in a cross-layer approach between application and MAC layers.

• 한국경영과학회지
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• 제8권2호
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• pp.9-25
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• 1983

A new approach to cross impact analysis using probabilistic system dynamics(PSD) is presented in this article. The previous models using PSD consist of system dynamics models as a basis which are interacting with cross impact analysis (CIA) sectors. In this model, the policy impact analysis part is separated from the CIA sectors and is constituted an independent subsectors of the model. The policy subsector is designed to separate the policy impact and provide feedback both to the system dynamics base model and cross impact analysis sectors. The new technique is applied to the forecasting, assessment and policy formulation of air pollution in Seoul metropolitan area in 2,000. The results show that the new tool consider policy effects more effectively than the previous PSD models.