Hiromitsu Kato

Middleware technology for ubiquitous computing: AYA (context-aware and yet another service) that permits autonomous collaboration on super distributed objects

AbstrocrThe present paper proposes a middleware, named AYA, for ad-hoc and autonomous collaboration over the super distributed objects environments where existing information devices cannot be prescribed because of their mobile capability. According to discovery o f the information devices, AYA firstly defines the user context, and secondly assigns roles of information devices based on the scenario for the defined user context, and finally executes the service for the user. These processes are continuously and iteratively conducted where context definition and role assignment in real and dynamic environment are main focuses to be dealt with. Mathematical description of the definition and assignment processes is given as well as some experimental development.

A service selection method based on context types for a ubiquitous service system in a public space

Service systems in public spaces are now being developed by employing ubiquitous computers in these spaces. Such systems must provide services to end users with a wide range of motivations, including unmotivated users who do not actively use the available services. Context-awareness to support these users is thus an important requirement for this kind of ubiquitous computing (UbiComp) system. We propose a service selection method based on registered context types for each end user in order to facilitate ubiquitous service systems in public spaces. By applying this method, we have developed a prototype of an interactive guidance board application and demonstrated its effectiveness.

Risk analysis and secure protocol design for WWW-based remote control with operation-privilege management

The paper discusses security issues related to the use of the Internet for remote control of decentralized systems. After conducting risk analysis based on the detection of potential threats, we designed a Secure Tele-operation Protocol (STP) specification for Internet-based control systems. STP is an XML-based protocol that manages operation privileges for each online operator. If STP is used with intelligent agents, remote manipulation can be protected from both illegal interference and malicious access. Moreover, among the authenticated operators, operation privileges are negotiable for transfer to other authorized remote operators.

Systems technologies for the ubiquitous society

As a trans-disciplinary approach to integrate a multi-disciplinary project (Yaoyorozu Project), we propose a concept of combination of systems technologies, that is, mathematical modeling of society, multi-agent simulation, and a scenario generation method. The objectives of the project are to design ubiquitous information society of 2010 and to extract issues of the future information society. This paper reports some research results of these systems technologies; a mathematical model relevant to the spreading of the ubiquitous information systems which consists of mobile/wearable devices and devices in environments, a social simulation focused on ubiquitous community sustainability, and a scenario-generating procedure for extracting future social issues. The synergetic relationship among these three technologies is also discussed.

An approach standing on systems concept for designing information service system architecture in manufacturing industry

This paper shows an attempt to leads an approach to design information service system architecture standing on systems concept and presents an application example in manufacturing system. The systems concept, Autonomous Decentralization, gives a consistent design for reference architecture, concrete architecture and the implementation. The service system provides an autonomous process for a service receiver to get valued information changing the state of the receiver. The example of the service system provides recursively the manufacturing information to make visible at factory (MIERUKA in Japanese) for rapid decision making among stakeholders in the business process.

Interactive multiple objective decision method for water supply scheduling in hybrid network models

In this paper, we propose an interactive, hierarchical architecture for wide-area water supply planning. Using the proposed architecture, we can make satisfactory schedules reflecting the decision-makers preferences. The system consists of an upper layer and a lower layer. The upper layer corporately generates the parameters used for the optimization in the lower layer. The advantage of our developed system is that the network parameters for optimization are not necessarily prepared beforehand but are generated automatically during the interactive decision process.

Platform for Cooperating Among Field Systems, Control Systems and Enterprise Systems

Recently, in the fields such as power, transportation and industry, it is strongly required to simplify and speed up improvement and rebuilding of systems, in order to promote efficiency of business in the whole company that includes field systems, control systems and enterprise systems, and in other to cope quickly with changes of a business environments. In order to solve the above, in this paper, we describe the concept and architecture of “Intermediating data field” and the platform technique based on the architecture for integrating seamlessly from field equipments to enterprise systems, and for simplifying to expand ranges of a system and update them. In addition we describe examples of applying our platform technique to an industrial system.