Akira Hattori

A system to share arrangements for daily tasks and life events on the web

It is important to make plans and preparations for daily tasks and life events, for example when moving house. A well-considered arrangement makes it possible to efficiently finish such tasks and events. It would also undoubtedly be helpful for many people. Therefore, we propose a web-based system for sharing arrangements for these tasks and events in order to increase productivity in advance of carrying them out. Each user of our system can customize shared arrangements and use them together with a scheduling functionality. The arrangements are linked to events in the scheduler, and users can check their progress as a workflow. This function is useful to make arrangements taking users different schedules into consideration. We discuss advantage of our system.

A web-based system for gathering and sharing experience and knowledge information in local crime prevention

In this paper, we propose a Web-based system to promote public safety and security that uses grassroots information to prevent and solve crime. The feature of our system is that it gathers and formalizes information related to crime or suspicious activities. The system provides useful information by arranging it with time and geographical attributes. As a result, people can find out about crime and suspicious happenings in their local area. Using this system enables people to share their experience and knowledge before crime actually occurs. This can lead to strategies for self-defense against ever-evolving criminal techniques.

Method of Visualizing Relations between Tweets to Facilitate Discussions via Twitter

It is common for clients using Twitter to adopt displays that indicate their posts (tweets) as textboxes, and they are individually and perpendicularly lined up in order. When several people discuss a particular topic, they frequently post tweets as replies. However, it is difficult for users in these types of displays to obtain the information that is required and beneficial to understand to make progress in particular discussions. Consequently, we propose a system, which we evaluated, of visualizing the relations between tweets by using digraphs.

Design and Trial of a Cell-phone-based Hazard Information Sharing System for Residents Living Close to an Incident

This paper presents a hazard/crime incident information sharing system using cell phones. Cell phone penetration is nearly 100% among adults in Japan and cell phones have functions which are sufficient as a telecommunication tool besides GPS positioning and camera functions. The open source software, Apache, Postfix and MySQL is installed on a system server, and, together with the information service provided by Google Maps, are used to satisfy system requirements that are determined for the local community. Conventional systems deliver information to all people registered in the same block, even if an incident occurred at a spot far from their house. The key feature of the proposed system is that the distribution range of e-mail messages which give hazard and location information etc. is determined by the geometrical distance from the incident spot to the residence of each registered member. The functions and operations have been confirmed by a trial conducted in cooperation with the members of the neighborhood community.

Design and Operation of a Cell Phone-Based Community Hazard Information Sharing System

This paper presents a hazard/crime incident information sharing system using cell phones. Cell phone penetration is nearly 100% among adults in Japan, and they function as a telecommunication tool as well as a Global Positioning System GPS and camera. Open source software Apache, Postfix, and MySQL is installed on a system server, and together with the information service provided by Google Maps, are used to satisfy system requirements for the local community. Conventional systems deliver information to all people registered in the same block, even if an incident occurred far from their house. The key feature of the proposed system is that the distribution range of the hazard notification e-mail messages is determined by the geometrical distance from the incident location to the residence of each registered member. The proposed system applies not only to conventional cell phones but also smart phones, which are rapidly becoming popular in Japan. The new system functionality has been confirmed by a trial using members of the local community. System operation began after the successful trial and a training meeting for the local residents. System design, verification results, and operating status are described in this paper.

A web service-based system for sharing distributed XML data using customizable schema

We describe a system for sharing distributed XML data among organizations using customizable schema. In our system, each organization can customize common DTD (Document Type Definition) within the bound of rule to create its own DTD, which is called customized DTD. And then it can describe information with tags according to the customized DTD. Basically, the upper structure of shared XML data is common. Proposed system consists of a management server, data providing servers, and application servers. They communicate with each other through web services technology. Customized DTDs are managed centrally by the management server. The server also examines whether they conform to the rule of customization. As a result of prototype system using welfare information, we found that our system was effective for sharing information among organizations of which each works freely in the same field.

Web-Based System for Supporting Participation in International Conferences

To participate in an international conference, we must complete a series of tasks in accordance with the conference schedule. However, graduate students and researchers who have little or no experience of international conferences often have many difficulties in doing this. We propose a system to support their participation in international conferences. Our proposed system combines three functionalities, knowledge management, workflow management, and schedule management, and it takes advantages of several Web services. Our system associates knowledge, which is composed from the results and deliverables of performed tasks and related know-how, email messages sent by users, and their Web-search histories, with the tasks of conference workflows. In addition, when a workflow is created, the system adds important dates of the conference to the users Web calendar. We built a prototype system and confirmed that it works properly.

An assertion-based information acquisition system exploiting hierarchical structures of documents

This paper presents a new kind of document-information acquisition system, which we call an information probe system. This system is intended to enable the user-centric acquisition of information in which authors and users may not have a common interpretation. The notion of the ldquoskeletonrdquo is devised to abstract the relations between terms that appear in the pairs of adjacent layers of hierarchical documents. The skeleton reflects the assertions made by authors, and its formal description is presented by applying the notation of conceptual graphs. This model has produced a scheme for the assertion-based acquisition of information. The assertions of authors and of users are represented as respective sets of terms and their relations; document information is then selectively acquired by comparing the assertions. Probing is intended to cater to the original interpretations of individual users, and uses assertions as clues in searching for document information.

Demonstration of Intelligent Environment System Based on GPS Information Integrated with Cellular and Home Electronics Network

This paper proposes a new service system architecture based on the location information obtained from a GPS embedded cell phone, a mobile telecommunication network, the Internet and a home electronics network. First, the location monitoring system that is integrated with cell phones and GoogleMaps is described. The movement history and location accuracy are confirmed by an experiment covering different types of district and environment. An intelligent environment system that controls the air conditioner automatically without any user operation is proposed as an example of a service for amenity enhancement. The location information system estimates the location of the room owner and triggers the appropriate command to the air conditioner. It is confirmed that the room temperature can be controlled before the owners arrival in the room.

A Regional Safety Information Sharing System Based on CMS and Online Map System

We describe a regional safety information sharing system based on CMS and online map system. The system is characterized by extending the functional capability of XOOPS, which is a type of CMS, with online map system. It accumulates local knowledge through mapping of safety information by local residents. To evaluate it by a field experiment, we introduced it into Higashi ward in City of Nagoya. As the result of the experiment, we found that our proposed system was effective for sharing regional safety information among the community.