• Title/Summary/Keyword: ubiquitous Computing

Search Result 1,432, Processing Time 0.025 seconds

Mutual Authentication Protocol Using a Low Power in the Ubiquitous Computing Environment

  • Cho Young-bok;Kim Dong-myung;Lee Sang-ho
    • Proceedings of the KSRS Conference
    • /
    • 2004.10a
    • /
    • pp.91-94
    • /
    • 2004
  • Ubiquitous sensor network is to manage and collect information autonomously by communicating user around device. Security requirements in Ubiquitous based on sensor network are as follows: a location of sensor, a restriction of performance by low electric power, communication by broadcasting, etc. We propose new mutual authentication protocol using a low power of sensor node. This protocol solved a low power problem by reducing calculation overload of sensor node using two steps, RM(Register Manager) and AM(Authentication Manager). Many operations performing the sensor node itself have a big overload in low power node. Our protocol reduces the operation number from sensor node. Also it is mutual authentication protocol in Ubiquitous network, which satisfies mutual authentication, session key establishment, user and device authentication, MITM attack, confidentiality, integrity, and is safe the security enemy with solving low electric power problem.

  • PDF

A study on the Planning of Ubiquitous System for Instrumentation management of Retaining wall in Building Construction (건축공사 흙막이 계측관리를 위한 유비쿼터스 시스템 구축 방안에 관한 연구)

  • Lee Ung-Kyun;Jo Ho-Kyoo;Kim Gwang-Hee;Kang Kyung-In
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • v.y2004m10
    • /
    • pp.67-70
    • /
    • 2004
  • The ubiquitous computing environment is widely expanded in almost all industries such as transportation. physical distribution, manufacturing, communication, tourist industry, financial business, and so on. But the construction industry is not well applied yet. Thus this study investigate the ubiquitous computing environment and propose a way for applying this technology to the construction industry. To achieve this aim, this study consider about a instrumentation management of retaining wall system in earthmoving operations, and suggest the ubiquitous system configuration to measure the variance of retaining wall. Through this system, the efficiency of the instrumentation management of retaining wall will be improved.

  • PDF

Study of e-learning and ICT Education in the Knowledge Society (지식정보화 사회에서의 e-learning과 ICT 활용 학습연구)

  • Park Young Chul;Baek Jong Sil
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.6 no.1
    • /
    • pp.64-71
    • /
    • 2005
  • In this paper we are investigating how ubiquitous revolution in knowledge society changes the education system. By the help of ubiquitous computing and networking techniques we estimates the configuration of e-teaming in the age of knowledge -based society, and we examines Education Model with e-teaming and ICT (Information and Communication Technology) at e-School. We also suggest the feasible design of the e-School and a Blended-learning scheme based on cooperative education as a way of teaching Education.

  • PDF

A Multi-Layered Approach for the Valuation of Location Based Services

  • Kim, Ji-Hoon;Kwon, Oh-Byung
    • Proceedings of the Korea Inteligent Information System Society Conference
    • /
    • 2005.11a
    • /
    • pp.147-156
    • /
    • 2005
  • In developing the ubiquitous computing technology based services (ubiquitous services), evaluating how much value of those services is created or added is very crucial. The efforts to evaluate the ubiquitous services have been progressed in two perspectives - technical perspective and behavioral perspective. Despite its importance, however, the methodologies which integrate both perspectives have been still very rare. Hence, this paper aims perspectives have been still very rare. Hence, this paper aims to propose an integrated ubiquitous service valuation methodology based on the multi-layered approach including technical and behavioral perspectives. To do so, we conducted a case study with currently existing location based service (LBS) such as navigation systems by conducting focus group interview (FGI) and field survey.

  • PDF

The Classification of Ubiquitous Service Model (유비쿼터스 서비스 모델 분류)

  • Lee, Chang-Mug;Kwon, Oh-Young;Son, Young-Sung
    • IEMEK Journal of Embedded Systems and Applications
    • /
    • v.5 no.3
    • /
    • pp.144-151
    • /
    • 2010
  • Ubiquitous computing which is providing various convenient services to user will prevail in future. To realize ubiquitous service, analyzing technical and information factors for service implementation is necessary. This paper defines ubiquitous service model to satisfy user demands and we analyze technical and information factors in order to realize services. Based on the factors, we extracts and classifies common compositions of ubiquitous services to suggest guidelines of service design.

A need-awaring multi-agent approach to nomadic community computing for ad hoc need identification and group formation

  • Choi, Keun-Ho;Kwon, Oh-Byung
    • Proceedings of the Korea Inteligent Information System Society Conference
    • /
    • 2005.11a
    • /
    • pp.183-192
    • /
    • 2005
  • Recently, community computing has been proposed for group formation and group decision-making. However, legacy community computing systems do not support group need identification for ad hoc group formation, which would be one of key features of ubiquitous decision support systems and services. Hence, this paper aims to provide a multi-agent based methodology to enable nomadic community computing which supports ad hoc need identification and group formation. Focusing on supporting group decision-making of relatively small sized multiple individual in a community, the methodology copes with the following three characteristics: (1) ad hoc group formation, (2) context-aware group need identification, and (3) using mobile devices working in- and out-doors. NAMA-US, an RFID-based prototype system, has been developed to show the feasibility of the idea proposed in this paper.

  • PDF

An Autonomic Self-management Mechanism for High-available Ubiquitous Computing System (고가용성 유비쿼터스 컴퓨팅 시스템을 위한 오토노믹 자가 관리 메커니즘)

  • Choi, Chang-Yeol;Kim, Sung-Soo
    • Journal of KIISE:Computer Systems and Theory
    • /
    • v.32 no.11_12
    • /
    • pp.566-577
    • /
    • 2005
  • A ubiquitous computing system could be constructed not only with one computer but with networks of computers (or ether devices with computing power) embedded in everyday objects. For this, dependability must be guaranteed for each single component of a system and for the whole system which might be more than just a sum of its components. This paper proposes an autonomic self-management mechanism that ran operate for 24 hours/day with the minimum human intervention. In addition, we validate the autonomic fault management scheme based on a workload model derived from the system log analysis.

Context aware Modeling and Services Implementation With Event Driven in Ubiquitous Computing Environment (유비쿼터스 컴퓨팅 환경에서 Event Driven 상황정보 모델링 및 서비스 구현)

  • Kim, Hyoung-Sun;Kim, Hyun;Moon, Ae-Kyung;Cho, Jun-Myun;Hong, Chung-Sung
    • Journal of Internet Computing and Services
    • /
    • v.7 no.5
    • /
    • pp.13-24
    • /
    • 2006
  • Context aware computing is an emerging paradigm to achieve ubiquitous computing environments by enabling computer systems to understand their situational contexts. A context aware system uses context to provide relevant information and services to the user depending on the user's task. In this paper, we propose an ontology based context aware modeling methodology that transmits low level contexts acquired by directly accessing various sensors in the physical environments to high level contexts. With these high level contexts, context aware application can provides proactive and intelligent services using ECA (Event Condition Action) rules. We implemented a presentation service in smart office environment.

  • PDF

An Efficient Study of Emotion Inference in USN Computing (USN 컴퓨팅에서 효율적인 감성 추론 연구)

  • Yang, Dong-Il;Kim, Young-Gyu;Jeong, Yeon-Man
    • Journal of the Korea Society of Computer and Information
    • /
    • v.14 no.1
    • /
    • pp.127-134
    • /
    • 2009
  • Recently, much research have been done on ubiquitous computing models in advanced countries as well as in Korea. Ubiquitous computing is defined as a computing environment that isn't bounded by time and space. Different kinds of computers are embedded in artifacts, devices, and environment, thus people can be connected everywhere and every time. To recognize user's emotion, facial expression, temperature, humidity, weather, and lightning factors are used for building ontology. Ontology Web Language (OWL) is adopted to implement ontology and Jena is used as an emotional inference engine. The context-awareness service infrastructure suggested in this research can be divided into several modules by their functions.