• Title/Summary/Keyword: Information Communications Technology

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Haptic Technology for the Mobile Device: Future Research and Opportunity in Business

  • Park, Joo-Won;Jo, Soo-Ran;Jeon, Se-Bom;Moon, Jung-Hoon
    • 한국경영정보학회:학술대회논문집
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    • 2008.06a
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    • pp.79-84
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    • 2008
  • Haptics, the science and physiology of the sense of touch, has been investigated in the field of engineering and HCI to provide better computing environments for users. Previous haptic technology being focused was mainly on the PC environments; however, beginning with the i-Phone of Apple recent haptic technology has entered our daily lives. Despite its popularization, the business opportunities the technology will bring have not yet been investigated thoroughly. This research forecasts the application of haptic technology on mobile devices and the consequential business opportunity. Also, the direction of future research in the field of MIS will be proposed.

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Analyzing Defects Types and Causes of Activities in Information and Communication Works Based on Investigation (정보통신공사 하자관리 실태조사를 통한 세부 공종별 하자 유형 및 원인 분석)

  • Eom, Yong-Been;Sohn, Sung-Geun;Kang, Sang-Hun;Park, Hyun Jung
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.05a
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    • pp.269-270
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    • 2021
  • As the era of the Fourth Industrial Revolution arrives and the culture of contact-less was established due to the long-term COVID-19, the construction industry is striving to develop smart home services to expand the scope of information and communications technology (ICT) to provide convenience to residents. However, various defects are occurring in information and communications technology facilities in apartments, and related research is lacking. In this study, case studies and research methods of related prior studies are analyzed as a basis for identifying the types and causes of defects that occur in information and communications technology facilities. To analyze various studies, we divided them into studies on smart home Internet of Things (IoT), information and communications technology construction of apartments, and investigated their features and limitations. Plus, future research will be conducted on apartments within 10 years of completion among apartments completed by domestic construction companies to supplement the limitations of prior research. In addition, we will prepare basic data on defects of ICT construction by analyzing the major causes of defect types through the analysis of defect types and frequency by detailed work type of information and communications technology construction.

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An Adaptive Equalization of Amplitude Chrominance Distortion by using the Variable Step-size Technique

  • Chutchavong, Vanvisa;Janchitrapongvej, Kanok;Benjangkaprasert, Chawalit;Sangaroon, Ornlarp
    • 제어로봇시스템학회:학술대회논문집
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    • 2004.08a
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    • pp.2065-2069
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    • 2004
  • This paper presents an adaptive equalizer using finite impulse response (FIR) filter and least-mean square (LMS) algorithm. Herein, the variable step-size technique (VSLMS) for compensating the amplitude of chrominance signal is utilized. The proposed equalizer can be enhanced and compressed the chrominance signal at color subcarrier. The LMS algorithm employed in simplicity structure but gives slow convergence speed. Thus, the variable step-size is very attractive algorithm due to its computational efficiencies and the speed of convergence is improved. In addition, experimental results are carried out by using the modulated 20T sine squared test signal. It is shown here that the adaptive equalizer can be equalized the amplitude chrominance distortion in color television transmission without relative delay distortion.

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Decision Feedback Equalization Receiver for DS-CDMA with Turbo Coded Systems

  • Chompoo, T.;Benjangkaprasert, C.;Sangaroon, O.;Janchitrapongvej, K.
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.1132-1136
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    • 2005
  • In this paper, adaptive equalizer receiver for a turbo code direct sequence code division multiple access (DSCDMA) by using least mean square (LMS) adaptive algorithm is presented. The proposed adaptive equalizer is using soft output of decision feedback adaptive equalizer (DFE) to examines the output of the equalizer and the Log- maximum a posteriori (Log-MAP) algorithm for the turbo decoding process of the system. The objective of the proposed equalizer is to minimize the bit error rate (BER) of the data due to the disturbances of noise and intersymbol interference (ISI)phenomenon on the channel of the DS-CDMA digital communication system. The computer program simulation results shown that the proposed soft output decision feedback adaptive equalizer provides a good BER than the others one such as conventional adaptive equalizer, infinite impulse response adaptive equalizer.

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Security Level Decision Problem in MLP-based Secure OS (다중등급 보안 운영체제에서의 보안 등급 결정 문제)

  • Kang, Jung-Min;Shin, Wook;Park, Chun-Gu;Lee, Dong-Ik;Lee, Kyeong-Ho
    • Proceedings of the Korea Information Processing Society Conference
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    • 2001.10b
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    • pp.943-946
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    • 2001
  • 대부분의 안전한 운영체제는 주체와 객체에 보안 등급을 부여하여 운영하는 다중등급 정책(MLP: Multi-Level Policy)을 수용하고 있으며, BLP 모델은 이 정책을 표현하는 검증된 대표적인 모델이다. 하지만 이러한 다중 등급 보안 운영체제들은 접근 주체인 프로세스가 접근 객체로서 존재하는 등급화 된 프로그램을 실행 시 새로운 프로세스를 위한 보안 등급을 부여해야 하는데, 접근 주체와 접근 객체의 보안 등급이 다를 경우 보안 등급 결정 문제가 발생하며 정보보호의 목적에 위배되는 결과가 발생한다. 이에 본 논문에서는 위에 언급된 문제를 해결할 수 있는 방안을 BLP 모델 측면에서 고찰한다.

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Multi Level-Role Behavior Based Access Control(ML-RBBAC) for Secure Operating Systems (안전한 운영체제를 위한 다중 등급-역할 행위 기반 접근통제)

  • Shin, Wook;Park, Chun-Goo;Kang, Jung-Min;Lee, Dong-Ik;Jung, Seung-Woog
    • Proceedings of the Korea Information Processing Society Conference
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    • 2001.10b
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    • pp.1005-1008
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    • 2001
  • 본 논문은 현재 안전한 운영체제 개발에 사용되고 있는 강제 접근통제(MAC)와 역할 행위 기반 접근통제(RBBAC)의 혼합 기법인 다중 등급 역할 행위 기반 접근통제(ML-RBBAC)를 제안하고, 접근통제 모델을 기술한다. ML-RBBAC은 안전한 운영체제가 MAC과 RBBAC을 동시 지원하기 위한 최적의 방법이며, 기존 MAC 의 단점인 지나치게 엄격한 정보흐름 통제 및 보안 관리 부담의 증대 문제를 해결한다.

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Extended Multi-Level/Role Behavior Based Access Controls on Linux Operating System (리눅스 운영체제를 위한 확장된 다중 등급/역할 행위 기반 접근통제 방법)

  • Shin, Wook;Kang, Jung-Min;Park, Chun-Goo;Lee, Dong-Ik
    • Proceedings of the Korean Information Science Society Conference
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    • 2001.04a
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    • pp.772-774
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    • 2001
  • 안전한 운영체제는 정보 시스템의 보안 기능 제공을 위해 필수적으로 연구되어야 할 핵심과제로, 이제까지 주로 임의 접근통제(DAC) 기반의 운영체제 위에 강제 접근통제(MAC)를 적용하는 방향을 진행되어 왔다. 그러나 이러한 경우 MAC의 엄격한 정보 흐름 통제와, 보안 관리의 부담으로 인하여 실제 시스템에 적용하기에 어려움이 있다. 이에 본 논문에서는, 엄격한 MAC의 제한으로 완화되고, 좀 더 정교하고 유연한 접근통제 정책의 구현을 위하여 확장된 RBAC인 역할 행위 기반 접근통제(RBBAC)을 적용한 접근통제 시스템을 제안한다.

An Optimization of Tournament Selection in Genetic Algorithms for Deceptive Problems (유전자 알고리즘에서 Deceptive 문제에 대한 토너먼트 선택의 최적화)

  • Kim, Ye-Hoon;Ahn, Chang-Wook;Kim, Ki-Pyo;Ramakrishna, R.S.
    • Proceedings of the Korea Information Processing Society Conference
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    • 2003.11a
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    • pp.305-308
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    • 2003
  • 본 논문은 토너먼트 선택을 사용한 Deceptive Problem에서 최적 해(optimum)를 찾으면서 수렴(Convergence)속도를 향상시키기 위한 최적의 조건을 찾고자 한다. 이를 위해 적합도가 높은 염색체(cromosome)를 다음 세대로 전달하면서 동시에 적합도가 낮은 염색체에 대해서도 적정 수준 전달되게 하였다. 또한 기존의 여러 선택기법 중 가장 일반적으로 사용되는 토너먼트 선택 기법의 문제점을 고찰하고, 제안 방법으로 최적도 및 수렴속도를 모의 실험을 통해 비교 및 분석한다. 실험 결과로부터 제안 방법에 대한 수렴속도의 경향을 고찰하였다.

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Japanese Expressions that Include English Expressions

  • Murata, Masaki;Kanamaru, Toshiyuki;Nakamoto, Koichirou;Kotani, Katsunori;Isahara, Hitoshi
    • Proceedings of the Korean Society for Language and Information Conference
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    • 2007.11a
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    • pp.330-339
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    • 2007
  • We extracted English expressions that appear in Japanese sentences in newspaper articles and on the Internet. The results obtained from the newspaper articles showed that the preposition "in" has been regularly used for more than ten years, and it is still regularly used now. The results obtained from the Internet articles showed there were many kinds of English expressions from various parts of speech. We extracted some interesting expressions that included English prepositions and verb phrases. These were interesting because they had different word orders to the normal order in Japanese expressions. Comparing the extracted English and katakana expressions, we found that the expressions that are commonly used in Japanese are often written in the katakana syllabary and that the expressions that are not so often used in Japanese, such as prepositions, are hardly ever written in the katakana syllabary.

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Design of Inter-Agent Communication Infrastructure for Agent-based Workflow System (워크플로우를 위한 이동 에이전트 시스템의 통신 기반구조 설계)

  • Lee, Hyo-Kyoung;Song, Sang-Bum;Yoo, Jeong-Joon;Lee, Dong-Ik
    • Proceedings of the Korea Information Processing Society Conference
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    • 2000.04a
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    • pp.362-367
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    • 2000
  • 이동 에이전트 기반 워크플로우 시스템에서 워크플로우는 프록시 에이전트라는 이동 에이전트에 의해 수행되며 워크플로우를 구성하는 각 작업들은 서브 에이전트라는 여러 이동 에이전트들에게 위임된다. 워크플로우의 수행을 위해서는 프록시 에이전트와 서브 에이전트간 상호협력이 필요하며 이를 위해 에이전트간 통신 기반구조가 요구된다. 본 논문에서는 에이전트간 통신 방법으로서 동기적 통신과 비동기적 통신을 위한 기반구조를 설계한다.

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