An Overview of the Tatami Project

Editorial : Sustainable Development of Cognitive Science and Technology Ecosystem an Overview to the “Human Brain Project” as a Functioning Sample

Improvement of project management office performance: An empirical investigation of effective factors in iranian construction industry

Project management office (PMO) is a new emerging concept in Iranian construction industry. Executives expect this organizational unit to add value to the business, and meet the demands of stakeholders by performing specialized tasks ranging from providing project management support to portfolio management. In this regard, PMO managers have long faced the question of how to improve the performa...

Web-based Multimedia Support for Distributed Cooperative Software Engineering1

The Tatami project is building a system to support software engineering over the internet, exploiting recent advances in web technology, interface design, and specification. Our effort to improve the usability of such systems led us into algebraic semiotics, while our effort to develop better formal methods for distributed concurrent systems led us into hidden algebra. We discuss the Tatami sys...

Counting Fixed-Height Tatami Tilings

A tatami tiling is an arrangement of 1 × 2 dominoes (or mats) in a rectangle with m rows and n columns, subject to the constraint that no four corners meet at a point. For fixed m we present and use Dean Hickerson’s combinatorial decomposition of the set of tatami tilings — a decomposition that allows them to be viewed as certain classes of restricted compositions when n ≥ m. Using this decompo...

Auspicious Tatami Mat Arrangements

The main purpose of this paper is to introduce the idea of tatami tilings, and to present some of the many interesting and fun questions that arise when studying them. Roughly speaking, we are considering are tilings of rectilinear regions with 1×2 dimer tiles and 1×1 monomer tiles, with the constraint that no four corners of the tiles meet. Typical problems are to minimize the number of monome...