Seok-Jae Moon

Improvement on LEACH protocol of a wide-area wireless sensor network

This paper proposes to increase the efficiency energy of nodes which rapidly drops during the transmission of the LEACH (Low Energy Adaptive Clustering Hierarchy), using the method of the dual-hop layered in the sensor field. By introducing dual-hop method in the data transmission, the proposed single-hop method for short-range transmission and multi-hop transmission method between the cluster heads for remote transmission was introduce. By introducing a partial multi-hop method in the data transmission, a single-hop method for short range transmission method between the cluster heads for remote transmission was introduces. In the proposed DL-LEACH, the energy consumption of cluster head for remote transmission reduces and increases the energy efficiency of sensor node by reducing the transmission distance and simplifying the transmission routine for short-range transmission. As compared the general LEACH, it was adapted to a wider sensor field.

XMDR-DAI Based on GQBP and LQBP for Business Process

This paper proposed XMDR-DAI design for interoperable legacy systems. The XMDR-DAI design makes efficient business process for cooperation between companies. In this case, the business process contains a variety of queries where query-based data processing is not seamless due to heterogeneity issues. Therefore, the proposed XMDR-DAI design ensures efficient data interoperability among legacy systems. Because generation of queries in the business process are based on XMDR, and heterogeneity happening at the time of running queries are solved with GQBP and LQBP. Also, XMDR-DAI based interoperability is efficient because it builds XMDR and thereby provides global schema, enabling business process regardless of local schema.

Information retrieval system using the keyword concept net of the P2P service-based in the mobile cloud environment

In the mobile cloud environment, the information retrieval system based on the P2P is very important. In case of an information search that is not consistent with the meta profile in the data distribution technique, the reliability of the searched data cannot be assured. This study suggests the reliable information retrieval system of the P2P service based in the mobile cloud environment. The proposed system is applied to the keyword based concept net applying the ontology method. Additionally, for effective information retrieval of peers, the connectivity between the keyword concepts is applied. Here, the applied concept net consists of keyword focused net, field recommended by the professional group net, and business process concept net. This system is available to search and analysis in a mobile peer aspect by constructing the interface as a category-based concept net keyword with the information search about the business process cooperation; through this type of the classification system, the cooperation information is structured. The information search methodology using the keyword concept network of the ontology-based that is the topic of this study can suggest to sharing, expert, mobile, governance as the business process cooperative service. In addition, it is possible to change into the business process method through the social cooperation of the mobile environment. Therefore, the process improvement, control, and policy can be supported through the business process visualization.

MCSOSA: multimedia content share using ontology and secure access agent in mobile cloud

Mobile cloud is not just a traditional cloud, but a concept of virtualization that has expanded into mobile technology. It provides access to the data created and used by a user and content service by cloud platform. A feature of mobile cloud is supported that is the convenience of multimedia content sharing by mobile devices. However, there is a problem of inaccuracy of information retrieval in the process of sharing as well as personal information leakage and service inability status due to the malicious access to the mobile terminal in the retrieval process. This paper suggests the model to which the protective technique of multimedia content retrieval & access in mobile cloud is applied. The model stores and manages the individually different forms of content, and constructs the multimedia ontology in order to enhance the reliability in mismatched problems occurring in the retrieval process, and also suggests the response technique to security vulnerability occurring in the content access.

TMDR-Based Query Conversion for Data Integration in a Distributed Network

Corporate data are divided vertically or horizontally in the network by their functions. In this study, we propose a TMDR-based query conversion method to access these data by means of integration. TMDR is a repository that combines MSO for schema integration and Topic Maps for semantic integration of data. In methodology, the global query is created for global processing using TMDR, and the resulting global query is broken down into local schema to access distributed systems in a network, enabling integrated access. We propose a method of converting global query and local query for this purpose.

Keyword-Base Concept Nets Model for Information Retrieval in the Mobile Cloud

The purpose of the following report is to introduce a model that makes it possible to efficiently search data by using keyword-based concept network for reliable access of information which is rapidly increasing in the mobile cloud. A keyword-based concept network is a method with the application of ontology. However, the proposed model is added by association information between keyword concepts as a method for a users efficient information retrieval. Furthermore, the proposed concept network consists of the keyword centered concept network, expert-group-recommended field concept network, and process concept network.

Cooperation System Design for the XMDR-Based Business Process

This paper proposes a cooperation system for the XMDR-based business process. The proposed system solves the problem of heterogeneousness that may take place regarding interoperability of queries in a XMDR-based business process. Heterogeneousness in an operation of a business process may involve metadata collision, schema collision, or data collision. This can be handled by operating a business process by making use of XMDR-based Global Query and Local Query.

Data access control method for multimedia content data sharing and security based on XMDR-DAI in mobile cloud storage

Mobile cloud storage service is used for users’ multimedia content data sharing or synchronization in effective way with several mobile devices. To save various content data in the mobile cloud storage, the matters of security should be treated in the process of data sharing to provide flexibility and expandability for solving its heterogeneousness. Currently, the cloud storage service generally encrypts the content data for the security. However, this method is not perfectly safe for it manages ID, password, and encryption key simply with software; thus it may accept unauthorized users. This research suggests the data access control model and the method for multimedia content sharing and security based on XMDR-DAI in the mobile cloud storage. It supports key management based on hardware, identification for the integrity of client software, and security key sharing. Also, the suggested model saves/manages different types of multimedia content, thus it establishes XMDR-DAI-based metadata relationship for the problems that occurred in searching to increase the reliability. And this research suggests the prototype using TPM emulator that is operated in secure world of ARM TrustZone and TrustZone environment.

XMDR-DAI-based USN multimedia MetaData management agent for sensor networks

In a ubiquitous sensor network (USN) environment, it is necessary to define and manage a single metadata between the multimedia sensor and multimedia sensor node for interoperability purposes. One method to resolve this issue is the SensorML (Sensor Model Language), which is standard language that can be applied to sensor modeling. SensorML describes the model for data processing between multimedia sensors and provides a framework that can describe the information of each sensor. In this paper, an XMDR-DAI-based USN multimedia metadata is defined to describe the application of sensor devices, sensor nodes and sensor network information. And then an agent technology is used for effective storing and search of XMDR-DAI-based USN multimedia metadata. Sensor multimedia metadata can maintain interoperability in a USN multimedia environment based on SensorML, and the metadata management system can be directly used for metadata management in USN multimedia middleware or applications.

The Design of mBodyCloud System for Sensor Information Monitoring in the Mobile Cloud Environment

Recently, introduced a cloud computing technology to the IT industry, smart phones, it has become possible connection between mobility terminal such as a tablet PC. For dissemination and popularization of movable wireless terminal, the same operation have focused on a viable mobile cloud in various terminal. Also, it evolved Wireless Sensor Network(WSN) technology, utilizing a Body Sensor Network(BSN), which research is underway to build large Ubiquitous Sensor Network(USN). BSN is based on large-scale sensor networks, it integrates the state information of the patients body, it has been the need to build a managed system. Also, by transferring the acquired sensor information to HIS(Hospital Information System), there is a need to frequently monitor the condition of the patient. Therefore, In this paper, possible sensor information exchange between terminals in a mobile cloud environment, by integrating the data obtained by the body sensor HIS and interoperable data DBaaS (DataBase as a Service) it will provide a base of mBodyCloud System. Therefore, to provide an integrated protocol to include the sensor data to a standard HL7(Health Level7) medical information data.