• 한국IT서비스학회:학술대회논문집
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• 2003.05a
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• pp.18-25
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• 2003

SI 산업의 역사가 20년 이상 되었으나, SI CEO에 대한 연구는 거의 전무한 실정이다. 본 연구에서는 SI CEO의 인적특성에 대한 기초적인 연구를 수행한다. 일반적인 CEO특성 연구를 참조하여 SI 기업 CEO의 나이, 학력, 경력, 기능분야, 근속 등의 인적 특성과 이사회와의 관계 등 구조적 특성을 분석한다. 이 분석은 추후 연구에서 기업성과와의 관계를 규명하기 위한 기초자료로 활용한다.

• Electronics and Telecommunications Trends
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• v.14 no.5 s.59
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• pp.135-144
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• 1999

본 논문에서는 교육정보화를 위한 정부의 추진 정책, 웹 기반 구축 사례 등 전반적인 국내 교육정보화 추진 현황을 살펴보고, 향후 보편적인 교육방법으로 자리잡을 사이버 교육환경 구축을 위한 소프트웨어 기반구조에 대하여 정의하고 있는 교육기술 표준의 국제 표준화 동향을 소개한다. 그리고, 교육기술 표준에서 참조 모델로 사용되는 LTSA(Learning Technology System Architecture)를 소개하고, 실제 시스템에서는 LTSA에서 도출된 구성요소들을 관계 있는 기능으로 묶어 개별제품으로 통합시켜야 하므로 LTSA 구성요소가 웹 기반 환경에서 구현하는 방안 등에 대하여 기술한다.

• 한국정보통신설비학회:학술대회논문집
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• 2008.08a
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• pp.59-62
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• 2008

성공적인 u-City 서비스를 제공하는데 있어 가장 중요한 역할을 수행하는 기능으로 u-City 통합운영센터가 지목되고 있다. 본 논문에서는 u-City 통합운영센터의 효율적인 운영 모델을 제안하였으며 이를 위해서 먼저 u-City 기술 참조모델을 기반으로 하는 표준화된 u-City 서비스 도입 및 운영 방안을 제시하였다. 또한 기존에 제공되고 있는 각종 도시 정보서비스를 점진적으로 u-City 서비스에서 수용하는 전략으로서 점진적 서비스 융합 방안을 제시하였다.

• Proceedings of the Optical Society of Korea Conference
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• 2000.08a
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• pp.50-51
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• 2000

최근에 결상광학계는 광학유리를 사용한 전통적인 단순 구면형에서 플라스틱, 금속 등의 소재와 비구면 혹은 홀로그래피 광학소자를 이용한 복합적 기능형으로 발전하고 있다. 또한 엑스선에서 적외선까지 매우 넓은 분광영역에서 현미경으로 관찰할 수 있는 미소광학소자부터 구경 10 m 정도의 대구경 망원경까지 다양한 크기의 초정밀 결상광학계가 계속 개발되고 있다. 즉 구경 100 mm 정도의 구면 광학계에서 광대역 분광영역의 대구경 비구면 광학계로 발전하고 있다.$^{(1)}$ (표 1 참조) (중략)

• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.211-214
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• 2008

(주)알티베이스에서 개발한 메모리상주형 관계형 DBMS인 ALTIBASE는 로그 정보를 자체 로그파일에 기록한다. 하지만 로그 발생 모듈과 중요도로 각각 분류되어 별개의 로그 파일에 기록되기 때문에 사용자가 참조하는데 불편함이 따른다. 본 논문에서는 윈도 운영체제의 이벤트 로그 기능을 데이터베이스 시스템의 로그 기록 방법으로 구현하여 사용자 편의성을 제공하는 방법을 제시한다.

• Journal of the Korean Society for Computer Game
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• v.31 no.4
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• pp.61-70
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• 2018

In this paper, we propose a synchronized playback method of 3D reference model and video by extracting golf swing information from learner's golf video to precisely compare and analyze each motion in each position and time in the golf swing, and present the implementation result. In order to synchronize the 3D model with the learner's swing video, the learner's golf swing movie is first photographed and relative time information is extracted from the photographed video according to the position of the golf club from the address posture to the finishing posture. Through applying time information from learners' swing video to a 3D reference model that rigs the motion information of a pro-golfer's captured swing motion at 120 frames per second through high-quality motion capture equipment into a 3D model and by synchronizing the 3D reference model with the learner's swing video, the learner can correct or learn his / her posture by precisely comparing his or her posture with the reference model at each position of the golf swing. Synchronized playback can be used to improve the functionality of manually adjusting system for comparing and analyzing the reference model and learner's golf swing. Except for the part where the image processing technology that detects each position of the golf posture is applied, It is expected that the method of automatically extracting the time information of each location from the video and of synchronized playback can be extended to general life sports field.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.9
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• pp.2038-2044
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• 2011

Serious games are selected by users according to the original goals such as education, treatment, training and so on. Therefore, those type of games are evaluated inside and outside the game about whether the goals are archived or not. Among quality test elements of serious game, assessment is about whether, in games, ability to verify goal achievement is included or not. In this paper, we examined the achievement-assessing function of serious game through several cases. Furthermore, to utilize for developing serious games for English learning, we designed a level system which achievement-assessing function is applied to. In this level system, we used 'competition and reward' as the core elements of game, and designed the system through simulation of which grades are level-designed along the user's English proficiency level based on notice of MEST(Ministry of Education, Science and Technology). This paper is expected to be useful reference for designing English learning game containing achievement assessing function.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.46 no.7
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• pp.47-52
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• 2009

H.264 video coding standard is widely used due to the high compression rate and quality. The motion compensation is the most time-consuming and complex unit in the H.264 decoder. The performance of the motion compensation is determined by the calculation of pixel interpolation and management of the reference pixels. The reference pixels read from external memory using efficient memory management for data reuse is necessary along with the high performance interpolators. We propose the architecture of a motion compensation unit for H.264 decoders. It is composed of 2-dimensional circular register files, a motion vector predictor and high performance interpolators with low complexity. The 2-dimensional circular register files reuse reference pixel data as much as possible, and feed reference pixel data to interpolators without any latency and complex logic circuits. We design a motion compensation unit and a intra-prediction unit and integrate them into a prediction unit and verify the operation and the performance.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.5
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• pp.1145-1153
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• 2013

Android mobile platform copy the class files of all applications installed in android platform and keep them into one directory. But to add the service library into a platform, Android must generate a new binary image of platform and replace the platform because android refer the libraries using the memory-mapped file method in a directory. And this memory-mapped file reference method waste the storage space of mobile device because that directory include the duplicated libraries if the libraries refered by application are duplicated, Therefore a dynamic reconfiguration method on android mobile platform is needed to manage the service libraries of application executed on android platform and support the version management and function addition/modification. In this paper, we propose the platform dynamic reconfiguration method to add dynmically the service libraries on android platform.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.33 no.2
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• pp.253-266
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• 2023

The Null Pointer Dereference vulnerability is a significant vulnerability that can cause severe attacks such as denial-of-service. Previous research has proposed methods for detecting vulnerabilities, but large and complex programs pose a challenge to their efficiency. In this paper, we present a lightweight tool for detecting specific functions in large binaryprograms through symbolizing variables and emulating program execution. The tool detects vulnerabilities through data dependency analysis and heuristics in each execution path. While our tool had an 8% higher false positive rate than the bap_toolkit, it detected all existing vulnerabilities in our dataset.