Programming language, database and operating system objects are essentially implementation variants of the same basic programming paradigm, i.e. objects as found in object-oriented programming languages. Yet, these object models di er signi cantly with regard to programming support, granularity, lifetime, persistence, concurrency, fault-tolerance and others. The paper points out the di erences ...

We propose a methodology especially conceived to exploit the musical media in order to vehiculate some aspects in the realm of computational thinking to pupils of the lower secondary school (6th to 8th grades). The related activities are based on a visual programming language whose execution generates a melody shown using both its traditionally-notated musical score and its audio reproduction. ...

Many beginners are far from being able to overcome the difficulties of the elementary programming study based on such languages as Pascal, Basic, C or Fortran. The success of the Logo "turtle graphics" ilas stimulated the development of the new approach towards the elementary programming teaching. This "mini-language" approach is discussed briefly in the paper. As an example of mini-language we...

High-performance scientific applications are usually built from software modules written in multiple programming languages. This raises the issue of language interoperability which involves making calls between languages, converting basic types, and bridging disparate programming models. Babel provides a featurerich, extensible, high-performance solution to the language interoperability problem...

We investigate the problem of finding the first basic solution in the simplex algorithm. A modification of two phases simplex method is presented and its implementation in programming language Visual Basic is described. A few Netlib examples are presented.

Recently, the C and the VISUAL BASIC communities were tantalized by the advent of LINQ [18]—the Language INtegrated Query technology from Microsoft. LINQ represents a set of language extensions relying on advanced (some say hard to understand) techniques drawn from functional languages such as type inference, λexpressions and most importantly, monads. The 3 edition of C just as the 9 of VISUAL ...

This paper reports on an experiment to add concurrency to the Cyclone programming language, in order to get a safe concurrent language. The basic model considered is that of FairThreads in which synchronous and asynchronous aspects are mixed. The language Loft implements the FairThreads model in C. In this paper, one uses Cyclone instead of C in the implementation of Loft. Using the multi-threa...

The creation of a programming language calls for guiding principles that point the developers to goals. This article spells out the three basic principles behind the 20-year development of Racket. First, programming is about stating and solving problems, and this activity normally takes place in a context with its own language of discourse; good programmers ought to formulate this language as a...

This paper presents a new logic programming language for modelling Agents and Multi-Agent systems in computational logic. The basic objective of the specification of this new language has been the identification and the formalization of what we consider to be the basic patterns for reactivity, proactivity, internal “thinking”, and “memory”. The formalization models these concepts by introducing...