• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2013.10a
• /
• pp.524-525
• /
• 2013

동적 움직임을 가지는 노드에 대한 DTN(Delay/Disruption Tolerant Network)은 노드의 연결단절 및 불규칙적인 노드의 움직임에 의한 불안정한 상태를 해결하는 방법 중 하나이다. 특히 DTN은 재난상황 또는 움직임이 많은 노드간의 상관관계를 분석하여 노드 간 연결 확립을 보장함으로써 데이터 연결성과 전송률을 개선한다. 본 논문은 노드의 움직임에 대한 속성 정보를 기반하여 구성된 클러스터 구조의 네트워크에서 헤드노드 간의 연결 가능성을 분석하며 데이터를 목적지까지 포워딩하는 방식으로 망을 제어 유지하기 위한 방법으로 EPCM(Efficient Prediction-based Context-Awareness Matrix) 알고리즘을 제안하고자 한다. 이를 위해 적용한 상황 매트릭스는 시간에 따른 헤드노드들의 움직임과 속도 등의 상황 예측이 가능한 정보를 포함한 포워딩 분석 요소를 제공한다. EPCM 알고리즘은 노드가 주기적인 이동성을 가진다는 가정 하에 포워딩에 요구되는 상관관계를 연산 분석하여 예측 경로를 제공한다. 노드의 이동에 의해 경로가 변화하는 환경에서 EPCM 알고리즘은 상황 매트릭스를 통해 헤드노드의 연결 정보를 저장하고 관리함으로써 연결성을 보장하고 짧은 지연시간에 효율적인 전송이 가능할 것이다.

• International journal of advanced smart convergence
• /
• v.10 no.2
• /
• pp.21-30
• /
• 2021

With the rapid development of artificial intelligence and big data, a lot of medical data is effectively used, and the diagnosis and analysis of diseases has entered the era of intelligence. With the increasing public health awareness, ordinary citizens have also put forward new demands for panic disorder health services. Specifically, people hope to predict the risk of panic disorder as soon as possible and grasp their own condition without leaving home. Against this backdrop, the smart health industry comes into being. In the Internet age, a lot of panic disorder health data has been accumulated, such as diagnostic records, medical record information and electronic files. At the same time, various health monitoring devices emerge one after another, enabling the collection and storage of personal daily health information at any time. How to use the above data to provide people with convenient panic disorder self-assessment services and reduce the incidence of panic disorder in China has become an urgent problem to be solved. In order to solve this problem, this research applies the context awareness to the automatic diagnosis of human diseases. While helping patients find diseases early and get treatment timely, it can effectively assist doctors in making correct diagnosis of diseases and reduce the probability of misdiagnosis and missed diagnosis.

• Journal of Fisheries and Marine Sciences Education
• /
• v.25 no.4
• /
• pp.848-862
• /
• 2013

This study shows how social presence(SP) dimensions influence online consumer's behavior in the social commerce(SC) context. It is expected that the results could be utilized in the development of SC websites. According to the results, the awareness and cognitive SP dimensions affected consumer trust, but affective SP did not. And then consumer trust toward SC websites as a belief affected attitude and intention of consumer. Thus, it was re-confirmed that a consecutive influential relationship in the theory of reasoned action, i.e., "belief-attitude-intention", was significant in SC context as well. Finally, it is required as a future research how to implement the awareness and cognitive SP dimensions in the SC websites.

• Journal of the Korea Society of Computer and Information
• /
• v.16 no.7
• /
• pp.49-58
• /
• 2011

Augmented Reality(AR) assists human's cognitive ability through the information visualization by substantiating information about virtual situation. This technology is studied in a variety of ways including education, design, industry, and so on, by various supply of information devices equipped with cameras and display monitors. Since the most of the AR system depends on limited interaction that responds to the order from user, it can not reflect diverse real world situation. In this study, we suggest a knowledge based augmented reality system, which is composed of context awareness agent that provides recognized context information, along with knowledge based component that provides intelligent capability by utilizing domain knowledges. With this capability, the augmented object can generate dynamic model intelligently by reflecting context information, and can make the interaction possible among the multiple objects. We developed rule based context awareness system along with 3D model generation, and tested interaction among the augmented objects. And we suggest a framework that can provide a convenient way of developing augmented reality system for user.

• 제어로봇시스템학회:학술대회논문집
• /
• 2005.06a
• /
• pp.1072-1075
• /
• 2005

This paper presents that TD method is applied to the human adaptive devices for smart home with context awareness (or recognition) technique. For smart home, the very important problem is how the appliances (or devices) can adapt to user. Since there are many humans to manage home appliances (or devices), managing the appliances automatically is difficult. Moreover, making the users be satisfied by the automatically managed devices is much more difficult. In order to do so, we can use several methods, fuzzy controller, neural network, reinforcement learning, etc. Though the some methods could be used, in this case (in dynamic environment), reinforcement learning is appropriate. Among some reinforcement learning methods, we select the Temporal Difference learning method as a core algorithm for adapting the devices to user. Since this paper assumes the environment is a smart home, we simply explained about the context awareness. Also, we treated with the TD method briefly and implement an example by VC++. Thereafter, we dealt with how the devices can be applied to this problem.

• Proceedings of the IEEK Conference
• /
• 2008.06a
• /
• pp.765-766
• /
• 2008

In this paper, It has been emphasized of important path access during transmit of node when each node transmit broadcast service which one's of new MANET (Mobile Ad hoc Networks) of autonomy and mobility network structures. It has proposed analysis methods are hierarchical path structure of transmit which experience context aware through confidence to network connectivity alone as issue which can be reduce duplicate of beam forming on networks and maintenance one's of method got to optimized of transmission network that status information of context awareness using ad hoc ODDMRP(Ontology Doppler effect Dynamic Multicast Routing Protocol) path method.

• Journal of information and communication convergence engineering
• /
• v.7 no.3
• /
• pp.412-417
• /
• 2009

With ubiquitous computing aid, it can improve human being's life quality if all people have more convenient medical service under pervasive computing environment. In this paper, for a pervasive health care application for diabetes patient, we've implemented a health care system, which is composed of three parts. Various sensors monitor both outer and inner environment of human such as temperature, blood pressure, pulse, and glycemic index, etc. These sensors form zigbee-based sensor network. And as a backend, medical information server accumulates sensing data and performs back-end processing. To simply transfer these sensing values to a medical team may be a low level's medical service. So, we've designed a model with context awareness for more improved medical service which is based on ART(adaptive resonance theory) neural network. Our experiments show that a proposed healthcare system can provide improved medical service because it can recognize current context of patient more concretely.

• Journal of Korea Society of Digital Industry and Information Management
• /
• v.8 no.4
• /
• pp.63-71
• /
• 2012

Recently, because most of buildings in the city become bigger and higher, so various convenient facilities and high-tech management skills are required to prevent potential disasters. Especially, because fires in huge buildings can cause serious damage, technologies and methods that help people quickly and safely to escape from the building is very important to extinguish the fire in initial state and to minimize the damage. This paper suggests a context-aware service system that can provide optimal escape routes to tenants with their smart-phones. The proposed system collects contexts with real time through USN(Ubiquitous Sensor Network) and provides an optimum escape route based on the collected contexts through service users' smart phones. In addition, The system provides not only safe routes from the fire but also valuable information for rescue operations with real time.

• 한국IT서비스학회:학술대회논문집
• /
• 2010.05a
• /
• pp.100-103
• /
• 2010

무선 통신의 용량 증대와 음성 지역 해소 그리고 QoS를 위하여 최근 활발하게 연구개발되고 있는 femtocell은 사용자에게는 저렴한 통신 요금과 위치 인식 서비스 그리고 위치 통지에 의한 closed subscriber group간의 가족 위치 확인같은 편리성 제공과 통신사업자에게 OPEX, CAPEX 경감 등 장점을 제공하고 있다. 한편 기존의 유비쿼터스 컴퓨팅환경하에서 주변 상황 정보를 감지하여 인지하는 context awareness에 센싱과 서비스가 동시에 이루어지는 새로운 파라다임을 제공해 주고 있어 상황인지 시스템 구축에 파라다임의 변화가 필요한 시점이다. 즉, raw data 취득, 가독 data로 변환, 고수준 상황추론, 서비스 제공 등의 시스템 구축이 휴대 단말의 응용 프로그램이나 네트워크에서 단말을 인식하여 연결된 기기들에 대해 정보 전달이 가능해져 별도의 시스템 구축 없이도 상당 부분의 상황인지 framework 기능이 가능하게 되었다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.12 no.7
• /
• pp.1321-1328
• /
• 2008

The monitoring and controlling systems on middleware for agriculture service instead of pigpen is focused on context-awareness and event-centric structure in this paper. By processing and monitoring context information which obtained from a sensor field, the u-Farm middleware is to promptly provide the response for various queries from agriculture's application service. It allows a device to provide optimal ubiquitous farm environment.