• Information Systems Review
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• v.12 no.2
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• pp.205-223
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• 2010

Korean professors and students majoring IS (information systems) were asked "How much knowledge and skills will be required for entry level IS practitioners?" The result shows that there are significant perception gaps between IS academics and IS practitioners and that the perception of IS academics is obsolete. The result implies that the obsolete perception of IS academics is one of the major causes that Korean IS practitioners are experiencing so severe knowledge and skill deficiency.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.12 no.5
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• pp.451-465
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• 1987

With the introduction of ISDN network, the D channel protocol has bee defined as a signalling method for ISDN user-network interface. Therefore the NT2(Network Termination 2) which carry out concentration and switching function, must process the D channel related information. This paper describes how the D channel protocoal is applied and implented in a small ISDN subscriber concentrating system that has NT2 functions. The application protocol proposed is addressed taking into consideration the compatibility with ISDN standard facilities, TE(Terminal Equipment) or ET(Exchange Terminator), This protocol has been implementes using a general multitask operating system and it has the features of the minimized information processing and the simpified algorithm which are suitable for a small system. Its application programs are divided into various tasks to facilitate the addition and the modification of function. In this paper, we briefly outline the protocol defined in CCITT and show the application protocol that has fitted in a small concentrating system with NT2 functions. Also we present the experimental results and implementation method of this protocol.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.7-9
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• 2002

인터넷의 급속한 확산에 따라 각종 전자제품과 통신 장비의 보급이 가속화되면서 현재의 인터넷 주소체계로는 적절한 대응이 어려워졌고, 이러한 상황에서 IETF 가 인터넷 공유 기술을 공인하였다. 또한, 개인용 컴퓨터의 교체 주기도 점점 짧아지고 있다. 본 논문에서는 하나의 공인 IP 주소를 이용하여 다수의 단말 사용자들이 인터넷 서비스를 이용할 수 있도록 하는 인터넷 공유기를 개발하였다. 자원의 재활용을 위해 교체 후 방치되는 구형PC 의 보드를 이용하여 개발된 인터넷 공유기는 개인이나 소규모 사무실에서 활용가치가 있을 것이다. 또한, 개발된 인터넷 공유기와 함께 사용자들이 손쉽게 인터넷 공유기를 제작할 수 있도록 하는 인터넷 공유기 유틸리티와 인터넷 공유기 소프트웨어도 함께 구현하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.415-417
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• 2002

운영체제가 지원되지 않는 소규모 기기에서 IPv6의 보안기능을 고성능으로 제공하기 위해본 연구실에서는 IPv6용 IPsec 프로토콜과 암호화 알고리즘을 하드웨어로 구현하였다. 이러한 IPv6용 하드웨어 IPsec을 기반으로 한 보안 서비스를 제공하기 위해서는 안전한 키의 교환과 인증이 중요하다. 이를 위하여 본 논문에서는 IPv6용 하드웨어 IPsec을 위한 키 교환시스템으로서 IKE Module을 설계하여 드라이버 프로그램으로 구현하였다. 그리고 구현된 IKE Module을 IPv6용 하드웨어 IPsec의 드라이버로 탑재하여 기존의 소프트웨어 IKE Module과의 테스트를 통하여 기능을 검증하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.1
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• pp.371-374
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• 2011

In this paper, a software development for design of the small photovoltaic system which is used to LED lighting is presented. For optimal design of photovoltaic systems, the operating power consumption of the LED load is considered to estimate the capacity of the solar module and battery. In order to give system design engineers a high ease of use, the software tool provides a graphical user interface and monitoring function to check operation of the system prior to installation.

• Proceedings of the Korea Information Processing Society Conference
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• 2024.05a
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• pp.604-606
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• 2024

컴퓨터 비전 응용은 우리 생활에서 중요한 역할을 한다. 현재, 대규모 모델의 등장으로 딥 러닝의 훈련 및 운행 비용이 급격히 상승하고 있다. 자원이 제한된 환경에서는 일부 AI 프로그램을 실행할 수 없게 되므로, 경량화 연구가 필요하다. YOLOv8 은 현재 주요 목표 검출 모델 중 하나이며, 본 논문은 다중 스케일 Ghost 컨볼루션 모듈을 사용하여 구축된 새로운 YOLOv8-pose-msg 키포인트 검출 모델을 제안한다. 다양한 사양에서 새 모델의 매개변수 양은 최소 34% 감소할 수 있으며, 최대 59%까지 감소할 수 있다. 종합적인 검출 성능은 비교적 대규모 데이터셋에서 원래의 수준을 유지할 수 있으며, 소규모 데이터셋에서의 키포인트 검출은 30% 이상 증가할 수 있다. 동시에 최대 25%의 훈련 및 추론 시간을 절약할 수 있다.

• Journal of KIISE:Software and Applications
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• v.30 no.11
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• pp.1025-1036
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• 2003

In industry, it is a current trend that systems are developed by using Enterprise JavaBeans(EJB) technology for reducing the cost and the time. Thus, the architecture of EJB is getting more essential to enhance reusability, extensibility and portability of system. However little has been studied in the realm of the practical software architectures for EJB. The architecture has just bean studied in abstract level, but not in concrete level providing the method to substantiate it using the practical J2EE techniques. Just using the EJB technology doesn't guarantee the reusability of the artifacts because EJB specification provides the characteristics and architecture for only fine grained components as session and entity bean. In this paper, we propose the enterprise software architecture for the systems based on EJB and the concrete techniques for implementing that. Also, design patterns of modeling efficient enterprise architecture are represented. By analyzing both the strengths and the weaknesses of suggested design patterns, EJB design patterns which are suitable for each layer of enterprise architecture will be identified. Through the component which design patterns are applied, the architecture can support the optimized relationship between the components. Five techniques for designing components from fine grained to coarse grained based on EJB technology, and architecture design techniques including transaction and assembling techniques are proposed.

• Land and Housing Review
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• v.12 no.2
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• pp.79-89
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• 2021

This simulation based study analyzed the horizontal daylight distribution on the floor and ceiling of a small office space based on window orientations and interior window blind positions. South and north facing windows were each tested without window blinds and with window blinds at 45° and 180° (horizontal). The study showed that the illuminance value was highest 1m from the window. On the floor and ceiling, the difference in illuminance value was the greatest and least in December and June, respectively. The indoor illuminance value was highest when there was no window blind and under south-facing conditions. The greatest illuminance difference occurred between window blinds positioned at 45° and 180°. Under north-facing conditions, windows without blinds or with blinds at 45° had the least impact on indoor illuminance with illuminance being more evenly distributed.

• Journal of Digital Convergence
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• v.10 no.6
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• pp.259-267
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• 2012

Internet telephony is an Internet service which supports voice telephone using VoIP technology on the IP-based Internet. It has some advantages in that voice telephone services can be accompanied with multimedia services such as video communication and messaging services. Recently, the introduction of smart phones has led to a growth in social networking services and thus, the research and development of Internet telephony has been actively progressed and has the potential to become a replacement for the telephone service that is currently being used. In this paper we designed and implemented an Internet telephony network system which is developed by using Asterisk and open source softwares. It is developed on the linux system and has some features such as VoIP telephony service between SIP phones, voice mail, and call recording. It also supports web-based functions such as SIP users and server system management that is implemented by Apache web server and PHP programs. Afterwards, this system will be applied as VoIP network base technology for small sized companies and organizations. It will paly a role for encouraging companies to use open source softwares.

• KIPS Transactions on Software and Data Engineering
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• v.6 no.3
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• pp.155-160
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• 2017

Recently, Deep learning has been used successfully to solve many recognition problems. It has many advantages over existing machine learning methods that extract feature points through hand-crafting. Deep neural networks for human activity recognition split video data into frame images, and then classify activities by analysing the connectivity of frame images according to the time. But it is difficult to apply to actual problems which has small-scale activity classes. Because this situations has a problem of overfitting and insufficient training data. In this paper, we defined 5 type of small-scale human activities, and classified them. We construct video database using 700 video clips, and obtained a classifying accuracy of 74.00%.