• Journal of Institute of Control, Robotics and Systems
• /
• v.13 no.6
• /
• pp.542-546
• /
• 2007

In the vision of ubiquitous computing environment, smart objects would communicate each other and provide many kinds of information about user and their surroundings in the home. This information enables smart objects to recognize context and to provide active and convenient services to the customers. However in most cases, context-aware services are available only with expert systems. In this paper, we present generalized activity recognition application in the smart home based on a naive Bayesian network(BN) and fuzzy clustering. We quantize continuous sensor data with fuzzy c-means clustering to simplify and reduce BN's conditional probability table size. And we apply mutual information to learn the BN structure efficiently. We show that this system can recognize user activities about 80% accuracy in the web based virtual smart home.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2014.05a
• /
• pp.203-206
• /
• 2014

This paper discuss both cloud computing and smart computing, and then debates structural and functional issues about how the two computing systems interact for offering user-friendly information solutions. Smart Table is proposed to configure cloud resources. Smart Control algorithm is proposed to choose the best resources. The information interaction between cloud computing and smart computing services is realized for efficient construction of information systems and for user's convenience of information services.

• Journal of Information Technology Services
• /
• v.20 no.1
• /
• pp.1-9
• /
• 2021

After being introduced "4th Industrial Revolution" in the Davos Forum 2016, it is continuously talked about "4th Industrial Revolution" as an industrial and social innovation momentum for solving structural problems of economy and society. In this situation, our government established "the Committee of 4th Industrial Revolution" as a control tower and announced a policy "4th Industrial Revolution recommendation for government" in 2019. The Ministry of National Defense is pursuing "4th Industrial Revolution" policies and organizing a team "4th Industrial Revolution Smart Defense Innovation Team" in accordance with government-wide policies from 2019. In this paper, I will look at the background and status of the Smart Defense Innovation policy. And I am proposing development plans to create practical results as like "Strengthening governance for the Smart Defense Innovation" and "Implementation of the budget for the Smart Defense Innovation" and so on.

• Journal of Multimedia Information System
• /
• v.9 no.3
• /
• pp.209-218
• /
• 2022

Industrial IoT applications, including smart factories, require two problem-solving to build data monitoring systems required by services from distributed IoT sensors (smart sensors). One is to overcome proprietary protocols, data formats, and hardware differences and to uniquely identify and connect IoT sensors, and the other is to overcome the problem of changing the server-side data storage structure and sensor data transmission format according to the addition or change of service or IoT sensors. The IEEE 1451.4 standard-based or IPMI specification-based smart sensor technology supports the development of plug-and-play sensors that solve the first problem. However, there is a lack of research that requires a second problem-solving, which requires support for the plug-in of IoT sensors into remote services. To propose a solution for the integration of these two problem-solving, we present a IoT sensor platform, a service system architecture, and a service plugin protocol for the MQTT-based IIoT application environment.

• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.25 no.2
• /
• pp.479-487
• /
• 2015

According to IT development, smart home services is providing remote service, monitoring service and other various services through smart home devices based on network. But, smart home environment exists security threats such as data falsification, illegal authentication and invasion of privacy through a malicious device. Smart home is studying to prevent these security threats, but the studies of smart home environment security are still in early stage of development and the studies of group key management method is lacking in smart home. In this paper, we propose the group key management method for secure device in smart home.

• Journal of Information Technology Services
• /
• v.19 no.6
• /
• pp.97-117
• /
• 2020

Five years have passed since the introduction of the smart factory amid the new opportunities for growth and job creation in relation to domestic manufacturing companies. Nevertheless, there is a lack of analysis on SMEs introduction smart factories. This study empirically analyzed the effects on the introduction of smart factories of domestic metal processing SMEs by distinguishing the characteristics of enterprises In this study, 103 companies which introduced smart factories and another 106 companies which did not introduce them were sampled. The Introduction of the Smart Factory was analyzed by four categories such as the Company characteristics (R&D capability, product production capability, organizational change), entrepreneur characteristics (risk sensitivity), relational characteristics (trust, dependence, cooperation, Influence), and structural characteristics (competition). As a result of the research, we found out product production capacity, risk sensitivity, trust and cooperation, Influence, and competition are statistically significant in the introduction of smart factory. But competition was characterized by a negative (-) sign opposite to the hypothesis. This study is meaningful in that the scope of the analysis has been expanded by analyzing whether smart factory was introduced or not considering the characteristics of the company. And there should be continuous research on its utilization as well as the introduction of smart factory.

• International Journal of Internet, Broadcasting and Communication
• /
• v.14 no.2
• /
• pp.55-62
• /
• 2022

A smart tourism chatbot is needed as a user interface to efficiently provide smart tourism services such as recommended travel products, tourist information, my travel itinerary, and tour guide service to tourists. We have been developed a smart tourism app and a smart tourism information system that provide smart tourism services to tourists. We also developed a smart tourism chatbot service consisting of khaiii morpheme analyzer, rule-based intention classification, and tourism information knowledge base using Neo4j graph database. In this paper, we develop the Korean and English smart tourism Name Entity (NE) datasets required for the development of the NER model using the pre-trained language models (PLMs) for the smart tourism chatbot system. We create the tourism information NER datasets by collecting source data through smart tourism app, visitJeju web of Jeju Tourism Organization (JTO), and web search, and preprocessing it using Korean and English tourism information Name Entity dictionaries. We perform training on the KoBERT-CRF NER model using the developed Korean and English tourism information NER datasets. The weight-averaged precision, recall, and f1 scores are 0.94, 0.92 and 0.94 on Korean and English tourism information NER datasets.

• International Journal of Internet, Broadcasting and Communication
• /
• v.14 no.3
• /
• pp.22-29
• /
• 2022

Recently, with the development of mobile computing power, mobile-based VR and AR services are being developed. Due to network performance and computing power constraints, VR and AR services using large-capacity 3D content have limitations. A study on an efficient 3D content load method for a mobile device is required. The conventional method downloads all 3D content used for AR services at the same time. In this paper, we propose an active 3D content load according to the user's track. The proposed method is a partitioned 3D object load. Edge servers were installed for each area and connected through the MESH network. Partitioned load the required 3D object in the area referring to the user's location. The location is identified through the edge server information of the connected AP. The performance of the proposed method and the conventional method was compared. As a result of the comparison, the proposed method showed a stable Mobile AR Service. The results of this study, it is expected to contribute to the activation of edge server-based AR mobile services.

• The Korean Journal of Community Living Science
• /
• v.22 no.4
• /
• pp.579-590
• /
• 2011

This study focused on developing various application services for smart phones in the rural amenity resources information service. By developing application services for smart phones, this study aims to stimulate rural tourism and increase the rural tourism economy. The main findings of this study revealed that 'information for reports/cultural/recreational facilities, etc', 'maps for rural villages(food, attractions, etc)', 'regional weather information', 'traffic reports for rural villages(public transportation, etc)' and 'introduction of rural experiences (festivals, exhibitions, events, etc)' are preferentially needed as the contents services of the rural amenity resources. Moreover, it has been found that the types of services firstly needed to offer information of rural amenity resources include 'searching the information around me(where I am)', 'wayfinding such as navigation', 'information sharing function with messenger and SNS, etc', 'taking and editing photography', 'searching information of rural villages about festivals, events, etc'. These are the items that can be utilized in developing application services needed by information services of rural amenity resources. It is expected that the future real-time smart phone services for rural amenity resources will be able to reinforce the competitiveness of rural tourism by giving urban dwellers the chance to utilize the customized information whenever they want.

• Electronics and Telecommunications Trends
• /
• v.37 no.6
• /
• pp.54-63
• /
• 2022

This paper discusses service discoveries for smart trusted reality (TR) glass and networks developed by the Electronics and Telecommunications Research Institute. TR glass provides a differentiated gaze communication service from the well-known AR glass. Services include on-off of products that reach the eye, encryption of courier addresses, and time-based networking services. This paper addresses the technical roots and service scalability of TR glass. Furthermore, the agricultural sector was selected to provide microservices configuration, connectivity with 5G communication, and a full range of applications for extended services.