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이광재,이문호,Y.Xiao 대한전자공학회 2007 電子工學會論文誌-TC (Telecommunications) Vol.44 No.1
This paper developed a FIR-Rake receiver which makes use of a pilot signal broadcast by the TD-SCDMA (division-synchronous code division multiple access) base station to estimate the channel parameters. The FIR-Rake receiver can reduce multipath interference for the mobile stations. The analysis in frequency and discrete domain and computer simulations confirm that the proposed FIR-Rake receiver achieves a better performance under typical multipath fading propagation conditions. 본 논문에서는 채널 파라미터 추정을 위해 TD-SCDMA 기지국에 의해 방송되는 파일럿 신호를 이용하기 위한 FIR-Rake 수신기를 개발한다. FIR-Rake 수신기는 이동국에 대한 다중경로 간섭을 완화할 수 있다. 주파수 영역과 이산 영역에서의 해석, 그리고 컴퓨터 시뮬레이션은 제안 FIR-Rake 수신기가 전형적인 다중경로 페이딩 전파 환경에서 더 우수한 성능을 나타내는 것을 확인하였다.
Development and Verification of the Compact AirborneImaging Spectrometer System
이광재,용상순,김용승 대한원격탐사학회 2008 大韓遠隔探査學會誌 Vol.24 No.5
A wide variety of applications of imaging spectrometer have been proved using data fromairborne systems. The Compact Airborne Imaging Spectrometer System (CAISS) was jointly designed anddeveloped as the airborne hyperspectral imaging system by Korea Aerospace Research Institute (KARI) andELOP inc., Israel. The primary mission of the CAISS is to acquire and provide full contiguous spectralinformation with high spatial resolution for advanced applications in the field of remote sensing. The CAISSconsists of six physical units; the camera system, the gyro-stabilized mount, the jig, the GPS/INS, the powerinverter and distributor, and the operating system. These subsystems are to be tested and verified in thelaboratory before the flight. Especially the camera system of the CAISS has to be calibrated and validatedwith the calibration equipments such as the integrating sphere and spectral lamps. To improve data qualityand its availability, it is the most important to understand the mechanism of imaging spectrometer systemand the radiometric and spectral characteristics. The several performance tests of the CAISS wereconducted in the camera system level. This paper presents the major characteristics of the CAISS, andsummarizes the results of performance tests in the camera system level.
이광재 한국경영교육학회 2007 경영교육연구 Vol.47 No.-
Recently, the ERP is adapted to integrate the business process in many companies. To satisfy the educational consummers in the curriculum of account department, this article gropes for the model of the implementing ERP software into accounting information systems courses. The textbooks of accounting information systems were reviewed for the analysis of the business process. To classify the contents and the level of the information technology related primarily with accounting information systems courses. Theother research cases and the information technology skills defined by IFAC were reviewed. This research resulted in the revised syllabus framework for accounting information systems courses which is consist of lecture content and information technology. Though this research is not base on a direct survey data, this model of the accounting information systems courses and the syllabus framework will be useful for the education of accounting information systems because this kind of review and suggestion is tried for the first time and based on many other cases. 정보기술 환경의 변화는 회계교육기관에 있어서 좋은 기회임과 동시에 위협의 요인이 된다. 경쟁전략을 수립하는 기업의 입장에서 신속하고 현명한 의사결정을 하기 위해서 적절한 회계정보시스템이 필요하므로 회계교육의 수요는 증가할 수 있으나, 반면 정보기술의 변화와 교육수요자의 요구에 적응할 수 없는 회계교육은 커다란 위험에 직면하게 될 것이다. 따라서 본 연구는 정보기술의 변화와 교육수요자의 요구에 적응할 수 있는 회계정보시스템 교과교육의 개선방안을 고찰하는데 목적이 있다. ERP 소프트웨어에 의해 기업의 업무프로세스를 통합화 할 수 있어 교육소비자의 의사결정에 유용한 수단이 되며, 또한 기업에서의 ERP 사용률이 증대되고 있기 때문에, 회계정보시스템 교과교육에 ERP 소프트웨어를 활용하는 것이 교육성과를 높일 수 있을 것이다. 교육성과를 높이기 위한 방안을 교육수요자, 교육공급자, 교육시스템, 교육환경의 측면에서 고찰하였고, 정보기술을 ERP 업무프로세스의 내용과 연결한 회계정보시스템 교과교육 강의계획 모형을 제시하였다.
이광재,김태정,김학현 한국원예학회 2010 Horticulture, Environment, and Biotechnology Vol.51 No.1
This experiment investigated the effects of calcium-gluconate (Ca-glu) concentrations on growth and fruit quality of hydroponically grown tomato (Lycopersicon esculentum), cv ’Supermomotaro’. Ca-glu concentrations were added to Yamazaki’s tomato solution at 0 (control), 0.3, 0.6, or 0.9 me・L-1. from planting through harvest time. Ca-glu treatments did not affect plant height. The soluble solid content of fruit was not different among the treatments, but glucose concentration was increased by the 0.9 me・L-1 Ca-glu treatment. Fruit firmness was not affected by the Ca-glu treatments. Total fruit weight and average fruit weight decreased with high Ca-glu treatments. Fruit Ca, K, and Mg concentrations increased with the addition of Ca-glu. The lycopene content was the highest in 0.6 me・L-1 Ca-glu treatment.