The architectural level plays a major role in the engineering of computer based systems. Having proper means for representing the architecture of a system is a crucial element of large system development efforts as it reduces the amount of uncertainty among the involved stakeholders. This paper presents a systematic approach called FMC (Fundamental Modeling Concepts) to describe the conceptual ...

Software-intensive information systems have a major impact on our lives, both privately and professionally. Development of these systems is a complex activity that requires the involvement of people with di®erent competences and skills. Even though software-intensive systems have been developed since the 1960s, the success rate is still low. A major hindrance to successful system development pr...

Mathematical constructions and concepts can be utilized in a number of methods to investigate the process of generating architectural forms. One is to technically layout architectural elements along such constructions, another is to explicitly develop forms corresponding exactly to the underlying concept, and another is to use such concepts as inspiration, a starting point for design. A hybrid ...

As a domain of application and reference for the proposed approach, we focused on Constructionism, a theory that studies the use of technology in the creation of educational environments. The most well known pragmatic result of Constructionism is the Logo programming language which, for the past 20 years, has been used by millions of students as a fertile soil for the development of critical re...

We give a new method to construct minimal free resolutions of all monomial ideals. This relies on two concepts: one is the well-known lcm-lattice ideal; other concept called Taylor basis, which describes how resolution can be embedded in resolution. An approximation formula for ideals also obtained.

Due to their axiomatic foundation and their favorable computational properties convex risk measures are becoming a powerful tool in financial risk management. In this paper we will review the fundamental structural concepts of convex risk measures within the framework of convex analysis. Then we will exploit it for deriving strong duality relations in a generic portfolio optimization context. I...

In concept-based summarization, sentence selection is modelled as a budgeted maximum coverage problem. As this problem is NP-hard, pruning low-weight concepts is required for the solver to find optimal solutions efficiently. This work shows that reducing the number of concepts in the model leads to lower ROUGE scores, and more importantly to the presence of multiple optimal solutions. We addres...

This paper presents results for a 31 variable helicopter rotor design example. Results are given for several numerical methods. This is a brief description of a portion of the Boe-ing/IBM/Rice University collaboration whose purpose is to develop eeective numerical methods for managing the use of approximation concepts or response surface methodology in design optimization.

We describe the basics of fuzzy sets and fuzzy logic. Based upon the concept of linguistic values, which describe imprecise concepts using words, the basics of fuzzy rules and fuzzy inference are introduced. In the second part we briefly explain applications of fuzzy rules for function approximation using fuzzy graphs, clustering using fuzzy algorithms, and classification under uncertainty usin...