Seung-Woog Jung

A Development of Software Component Framework for Robotic Services

Robot software components, which can be accessed through their interface, are reusable and replaceable software modules used in composing robotic services. Using robot software components in developing a robot, developers can expect shortening of developing times, reduction of maintenance cost and improvement of program reusability, because interoperability among components is guaranteed. We have developed a component framework assisting robot developers to make robot application with ease. The component framework consists of a specification of component model, a component authoring tool, a component composer, and a component container. In this paper, we will not only show the developed component framework, but also demonstrate its usability by applying to commercial robots.

A heterogeneous coupling scheme of OPRoS component framework with ROS

The Open Platform for Robotic Services (OPRoS) supports the full life cycle for robot software development and execution by providing the robot software component model, component execution engine, various middleware services, development tools, and simulation environment. This paper describes a heterogeneous coupling scheme of OPRoS framework with ROS of which the communication infrastructure is made with the topics based on public/subscribe scheme.

Real-time supporting of OPRoS component Platform

The Open Platform for Robotic Services (OPRoS) supports the full life cycle for robot software development and execution by providing the robot software component model, component execution engine, various middleware services, development tools, and simulation environment. This paper describes real-time supporting of OPRoS component execution engine which is responsible for management and execution of components.

Casting Mobile Agents to Workflow Systems: On Performance and Scalability Issues

In this paper we describe two important design issues of mobile agents-based workflow systems; in architecture and workflow execution levels. Solutions for better performance and scalability of workflow systems are proposed. We suggest 3-layer architecture and agent delegation model in architecture and workflow execution levels of workflow systems respectively. Mobile agents effectively distribute workloads of a naming/location server and a workflow engine to others based on the proposed methods. In consequence, the performance and the scalability of workflow systems are improved. This effectiveness is shown through comparison with client server-based and another mobile agent-based workflow systems with stochastic Petri-nets simulation. Simulation results show that our approach not only outperforms others in massive workflow environment but also comes up with the scalability of previous mobile agent-based workflow systems.

Structuring Mobile User Context Based on Spatio-Temporal Information

This paper proposes a method for structuring and semantically enriching the personal data collected from smart phones. In order to structure the data, a set of locational data is analyzed to determine whether it is a move or a stay, what we call episode. Then, the episodes are augmented by tagging place name, place category, start time, and end time if it is a stay and distance, mobility (walk, vehicle, and bi-cycle), start time, and end time if it is a move. Experiments shows that mobile users context are well-structured and semantically enriched.

POI Estimation Method with Incremental Update based on Smartphones

As smartphones are widespread, it is very important in business to utilize effectively personal data generated by them. A lot of such data is inherently associated with certain locations or places. This paper proposes a POI(Point of Interest) estimation method with incremental update based on the data collected from smartphones.

The OPRoS fault processing framework

The Open Platform for Robotic Services (OPRoS) is a robot software platform that provides component-based development and execution environments for robot software. It also supports the full life cycle for robot software development and execution by providing the robot software component model, component execution engine, various middleware services, development tools, and simulation environment. This paper describes the fault processing framework that processes faults in the OPRoS component execution engine.

The implementation of the work management contract and the message inflow contract in the java connector architecture 1.5

The JCA(Java Connector Architecture) is the specification for integrating a J2EE application server with legacy systems such as DBMS, ERP, JMS, etc. The JCA 1.0 provides the API sets for a J2EE application server to communicate with legacy systems using three kinds of contracts. In the JCA 1.5, the new features are added including the contracts in the JCA 1.0.In this paper, I briefly introduce the JCA architecture and the basic contracts. And I discuss the implementation of the work management contracts and the message inflow contract which are the most important contracts among the new features in the JCA 1.5.