We describe the OpenACS web application framework and dotLRN, its Course Management System. dotLRN is an ongoing open source project to deliver a complete course and community management infrastructure that is scalable, robust, extendable and complies to open standards. The software, which is currently used to deliver online courses and collaboration tools at a number of major universities, is ...

Users may sometimes be overloaded with work so that they become temporally unable to handle incoming communications. Context aware systems are a promising approach to facilitate daily-life activities, especially providing assistance for communication management. After having surveyed the different challenges to build context-aware systems (e.g. modeling, reasoning about context), we introduce h...

To support human recollection, we present a data integration method using a simple information structure called a history structure, which is constructed from time, keywords, and URI sets. We also present algorithms that generate history structures from such information usages as Web searches, twitter, e-mails, calendars, and book purchases and create a user knowledge space. Based on our approa...

Small machine shops typically do not have the resources to develop custom simulations of their operations or data translators to import their data from other manufacturing software applications. This paper presents an overview of an information model currently under development at the National Institute of Standards and Technology (NIST) to address this problem. The model provides neutral data ...

This paper presents a new paradigm for “time-based-information” interactions. The system, called a WallComputer, provides similar ease of use and the rapid accessibility of devices such as calendars and clocks, while also providing a rich and extensive set of interactions generally only found on a multipurpose PC. The presented system incorporates two input modalities: gesture and speech. I pre...

This paper describes an intelligent, mixed-initiative scheduler which supports users in the organization and revision of their calendars, helping them to allocate personal and shared activities involving other collaborators. Our scheduler exploits well-known temporal reasoning techniques to suggest complete schedules, as well as to guide the user in the exploration of the possible changes to th...

Meetings are an important vehicle for human communication. The Meeting Scheduling problem (MS) is a decision-making process affecting several people, in which it is necessary to decide when and where several meetings could be scheduled. MS is a naturally distributed problem which has a clear motivation to be tried using distributed techniques: people may desire to preserve the already planned m...

This paper presents an approach to extract data records from websites, particularly ones with event calendars. We therefore use languagespecific key expressions and HTML patterns to recognize every single event given on the investigated web page. One of the most remarkable advantages of our method is that it does not require any additional classification steps based on machine learning algorith...