0198-9715/$ see front matter 2013 Elsevier Ltd. All rights reserved. http://dx.doi.org/10.1016/j.compenvurbsys.2013.09.005 ⇑ Corresponding author. Address: Tarbiat Modares University, Jalal Ale Ahmad Highway, P.O. Box 14115-111, Tehran, Iran. Tel.: +98 21 82884698; fax: +98 21 82884180. E-mail addresses: [email protected] (J. Karami), [email protected] (A. Alimohammadi), Taseifouri@y...

We propose a pattern-based software development method comprising analysis (using problem frames) and design (using architectural and design patterns), from which especially evolving systems benefit. Evolution operators guide a pattern-based transformation procedure, including re-engineering tasks for adjusting a given software architecture to meet new system demands. Through application of the...

This paper briefly describes the most relevant current approaches to the implementation of scientific models of consciousness. Main aspects of scientific theories of consciousness are characterized in sight of their possible mapping into artificial implementations. These implementations are analyzed both theoretically and functionally. Also, a novel pragmatic functional approach to machine cons...

Obstacle Avoidance for a Mobile Robot A notorious problem in mobile obstacle avoidance is the detection and avoidance of obstacles. This thesis evaluates several well-known methods for controlling the motion of a mobile robot in an unknown dynamic environment. One of these methods, the Global Dynamic Window Approach, is selected and, using a laser range finder as the only range sensor, the meth...

A general account is given of the problem frames approach to the development of software-intensive systems, assuming that the reader is already familiar with its basic ideas. The approach is considered in the light of the long-standing aspiration of software developers to merit a place among practitioners of the established branches of engineering. Some of its principles are examined, and some ...

We present the local path planning and obstacle avoidance method used on the autonomous tour-guide robot RoboX. It has proven its value during a 5 month operation of ten such robots in a real-world application, a very crowded exhibition. Three known approaches (DWA, elastic band, NF1) have been integrated into a system that performs smooth motion efficiently, in the sense of computational effor...

We study a functional method to extract the V−A condensate of dimension 6 from a comparison of τ -decay data with the asymptotic space-like QCD prediction. Our result is in agreement within errors with that from conventional analyses based on finite energy sum rules. Supported by PROCOPE, EGIDE Email: [email protected] Email: [email protected]

It is difficult to find resources on the Semantic Web today, in particular if one wants to search for resources based on natural language keywords and across multiple datasets. In this paper, we present LOTUS: Linked Open Text UnleaShed, a full-text lookup index over a huge Linked Open Data collection. We detail LOTUS’ approach, its implementation, its coverage, and demonstrate the ease with wh...

Use cases constitute a popular technique to problem analysis, partly due to their focus on thinking in terms of the user needs. However this is not a guarantee for discovering all the subproblems that compose the structure of a given software problem. Moreover, a rigorous application of the technique requires a previous consensus about the meaning of I. Jacobson’s statement “a use case must giv...

New functional representation for the strongly interacting systems is proposed which contains a new type of the coherent state. As a result the new algebraic structureso called ”tower of algebras” appears which gives the tower (or hierarchy) of models. 1 Functional approach. Consider Hubbard model (lattice version of Thirring model) [1]: H = −t ∑ ,σ αrσ + αr′σ + U ∑ r nr,↑nr,↓ = Hband = (1)