• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2004년도 가을 학술발표논문집 Vol.31 No.2 (2)
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• pp.391-393
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• 2004

Ubiquitous Computing은 소프트웨어 Architecture를 구현하는데 있어서 많은 도전들을 필요로 한다. 그 중에 하나는 User가 한 컴퓨터에서 다른 컴퓨터로 이동할 경우의 User Mobility를 고려한 것으로 User뿐 아니라 Application도 같이 이동하여 예전의 컴퓨팅 환경을 그대로 복원하게 되며 User가 작업하던 뜯을 계속해서 할 수 있게 만드는 것이다. 본 논문은 이러한 Ubiquitous Computing 환경을 만들기 위해 MuSa Architecture를 제안하고, Application 이동에 필요한 Manager들을 설명하도록 한다.

• 로봇학회논문지
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• 제4권2호
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• pp.147-154
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• 2009

Visions of ubiquitous robotics and ambient intelligence involve distributing information, knowledge, computation over a wide range of servers and data storage devices located all over the world, and integrating tiny microprocessors, actuators, and sensors into everyday objects as well in order to make them smart. In this paper, we introduce our ongoing research effort aimed at realizing ubiquitous robots in an information structured space. For this, a ubiquitous space and ambient intelligent systems for a librarian robot are introduced and the RFID technology based approach for these systems is described.

• 한국멀티미디어학회논문지
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• 제12권1호
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• pp.85-96
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• 2009

시장에서의 경쟁 심화와 소비자의 요구변화로 고객관계관리(CRM)가 기업의 경영전략을 결정하는데 중요한 역할을 하는 추세이다. 또한, 유비쿼터스 환경의 도래로 고객관계관리 분야에서도 새로운 응용이 시도 되고 있다. 고객관계관리를 위한 전통적인 데이터 수집방법은 고객 사생활 침해나 부정확한 데이터 등의 문제를 야기할 수 있어 새로운 방법이 요구되고 있다. 본 논문에서는 RFID 미들웨어로 부터 획득된 데이터를 서버에 저장한 후, 자동으로 분석정보를 생성하는 유비쿼터스형 고객관계관리를 위한 RFID 기반의 분석정보 생성 시스템을 제안한다. 제안하는 시스템을 전시장에 적용하여 시스템으로부터 생성된 분석정보를 기업과 고객에게 제공한다. 본 논문에서 제안하는 시스템의 활용은 고객, 기업, 상품에 대한 유비쿼터스적인 정보제공을 가능하게 하고, 클러스터링, 연관성, 순차성과 같이 보다 정확하게 분석된 정보를 제공하여 기업의 고객관리와 다음 의사결정에 긍정적인 영향을 미친다.

• 한국정보통신학회논문지
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• 제10권8호
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• pp.1519-1525
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• 2006

의료서비스 분야에서 의료와 컴퓨터 기술을 결합하여 온라인상에서 언제, 어디서나, 휴대 가능한 헬스케어(Healthcare) 장비와 유 무선 인터넷을 통해 실시간으로 환자의 생체정보 데이터를 수집하고, 이를 이용하여 진단 및 응급상황 인지가 가능한 U-헬스케어(Ubiquitous Healthcare) 시스템이 생겨났다. U-헬스케어 시스템은 기존의 의료 환경에서와는 달리, 사용자(환자, 보호자, 의료인등)들은 다양한 의료서비스를 요구하게 되고, 당연히 헬스케어 장비들은 통합된 의료서비스를 제공할 수 있도록 연동되어져야 한다. 본 논문에서 홈 네트워크(Home Network) 환경에서 사용자들의 다양한 요구를 처리하기 위해 분산 객체를 이용한 U-홈 헬스케어 미들웨어를 설계하였고, 다양한 헬스케어 장비들로부터 발생되는 생체 데이터를 통합하기 위한 데이터 변환 객체를 구현하였다.

• 디지털산업정보학회논문지
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• 제4권4호
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• pp.1-8
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• 2008

The USN is important in technique, unmanned observation using wireless network camera, detection technique that use intrusion detection sensor. But these encrypted data transmission and processing technique through sensor network, method of the staff's location recognition and arrangement aren't serviced still as a integrated system in facility security industry. This paper proposed that improve facility management, the staff present recognition and system efficiency using RFID, USN and wireless camera.

• Reproductive and Developmental Biology
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• 제33권3호
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• pp.139-146
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• 2009

This study tried to develop the system (device) that automatically notify a manager of condition just before and after farrowing to extend ubiquitous-based technology and to increase efficiency of delivery care and productivity by reducing human labor and time on standby when farrowing management is done in the difficult and hard working environment of farrowing such as night or holidays in field sand especially in pig industry. In this test, selected 10 gilts were executed timed artificial insemination and were set up each temperature sensor and load sensor to them 3 days before the estimated farrowing day and were observed the farrowing situation. This study was embodied the NESPOT-based (KT Corporation) monitoring system, the system to transmit data in real time by utilization of wireless LAN and the sensor module to apply the ubiquitous environment to them. And this study was observed the situation to automatically notify situations of 10 gilts that first bore just before and after farrowing. The result obtained the farrowing situations of them in real time by setup of the NESPOT-based monitoring system to check farrowing situation directly is as follow. The average time of the automatic notice about situation just before farrowing by the temperature sensor was 27.5 minutes before the beginning of farrowing (the expulsion time of a piglet). 6 of 8 pregnant gilts that first bore automatically were notified situations just before farrowing and the temperature sensors inserted into 2 ones before farrowing were omitted. (The automatic notice rate 75%) The average time of the automatic notice of situation just after farrowing by the load sensor was taken 46.5 minutes after the beginning of farrowing (the expulsion time of a first piglet). The average gestation period of 8 ones that first bore and were tested by the automatic notice of farrowing situation was 115.6 days. This result found that the automatic farrowing notice system by the temperature sensor is more efficient than the load sensor as the automatic farrowing alarm device and sanitary treatment and improvement of the omission rate were required.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2004년도 추계학술대회
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• pp.242-248
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• 2004

Personalized reminder systems have to identify the user's current needs dynamically and proactively based on the user's current context. However, need identification methodologies and their feasible architectures for personalized reminder systems have so far been rare. Hence, this paper aims to propose a proactive need identification mechanism by applying agent and semantic web technologies and RFID-based context subsystem for a personalized reminder system, which is one of the supporting systems for a robust ubiquitous service support environment. We have created a prototype system, RFID-based NAMA (Need Aware Multi-Agent), to demonstrate the feasibility of the methodology and of the mobile settings framework that we propose in this paper. NAMA considers the context, user profile with preferences, and information about currently available services, to discover the user's current needs and then link the user to a set of services, which are implemented as web services.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제2권1호
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• pp.37-49
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• 2008

At the present time the task of designing a highly integrated ZigBee radio frequency (RF) receiver with an excellent coexistence performance is still very demanding and challenging. This paper presents a number of system issues and design considerations for a ZigBee RF receiver, namely IEEE 802.15.4, for coexistence with wireless devices in the 2.4-GHz ISM-band. With regard to IEEE 802.15.4, the paper analyzes receiver performance requirements for; system noise figure (NF), system third-order intercept point (system-IIP3), local oscillator phase noise and selectivity. Based on some assumptions, the paper illustrates the relationship between minimum detectable signal (MDS) and various situations that involve the effects of electromagnetic interference generated by other wireless devices. We infer the necessity of much more stringent specification requirements than the published standard for various wireless communication field environments

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2008년도 한국컴퓨터종합학술대회논문집 Vol.35 No.1 (A)
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• pp.134-137
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• 2008

A novel Intrusion Detection and Response System (IDRS) for IP based Ubiquitous Sensor Networks (IP-USN) is proposed. According to the best of our knowledge this is the first security framework for any kind of IP based sensor devices. The proposed scheme is fast, lightweight in terms of computation and memory, which make it appropriate for resource constrained sensor devices.

• International Journal of Contents
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• 제2권1호
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• pp.9-16
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• 2006

Recently many researches are investigating for ubiquitous computing and network. In the real world many sensor devices must be equipped to provide many services for users. To make computing environment easy and more user friendly, middleware system not only hides all complexities (network, system, services, etc), but also needs to have efficient context inference scheme and system reconfiguration capability. In this paper we suggest context-aware middleware design for sensor network which provides efficient computing environment for end-users. We also present XML based implementation of our system.