The magnetostructural coupling between the structural and the magnetic transition has a crucial role in magnetoresponsive effects in a martensitic-transition system. A combination of various magnetoresponsive effects based on this coupling may facilitate the multifunctional applications of a host material. Here we demonstrate the feasibility of obtaining a stable magnetostructural coupling over a broad temperature window from 350 to 70 K, in combination with tunable magnetoresponsive effects, in mnniGe:Fe alloys. The alloy exhibits a magneticfield-induced martensitic transition from paramagnetic austenite to ferromagnetic martensite. The results indicate that stable magnetostructural coupling is accessible in hexagonal phasetransition systems to attain the magnetoresponsive effects with broad tunability.

International audienceTo program parallel systems efficiently and easily, a wide range of programming models have been proposed, each with different choices concerning synchronization and communication between parallel entities. Among them, the actor model is based on loosely coupled parallel entities that communicate by means of asynchronous messages and mailboxes. Some actor languages provide a strong integration with object-oriented concepts; these are often called active object languages. This paper reviews four major actor and active object languages and compares them according to carefully chosen dimensions that cover central aspects of the programming paradigms and their implementation

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C e n t r u m v o o r W i s k u n d e e n I n f o r m a t i c a Software ENgineeringSynthesis of Reo Circuits For Implementation Of Component-Connector Automata Specifications In component-based construction, this coordination becomes the responsibility of the glue-code language and its underlying run-time middle-ware. Reo offers an expressive gluelanguage for construction of coordinating component connectors out of primitive channels. In this paper we consider the problem of synthesizing Reo coordination code from a specification of a behavior as a relation on scheduled-data streams. The specification is given as a constraint automaton that describes the desired input/output behavior at the ports of the components. We present an algorithm that generates Reo code from a given constraint automaton. AbstractComposition of a concurrent system out of components involves coordination of their mutual interactions. In component-based construction, this coordination becomes the responsibility of the glue-code language and its underlying run-time middle-ware. Reo offers an expressive glue-language for construction of coordinating component connectors out of primitive channels. In this paper we consider the problem of synthesizing Reo coordination code from a specification of a behavior as a relation on scheduled-data streams. The specification is given as a constraint automaton that describes the desired input/output behavior at the ports of the components. We present an algorithm that generates Reo code from a given constraint automaton.

An anomalous behavior of the lattice parameters is reported for RTAl and R͑T , TЈ͒Al compounds, with R a rare-earth element and T and TЈ transition metals or Cu. In these compounds, which crystallize in the hexagonal ZrNiAl-type of structure, an abrupt transition in the temperature or composition dependence of the lattice constants a and c is observed with the common feature that values of the c / a ratio around 0.565-0.575 are generally not realized. Total-energy calculations based on density-functional theory show the occurrence of two close energy minima, which explains the observed structural instability and the associated transitions.

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Cloud technology has become an invaluable tool to the IT business, because of its attractive economic model. Yet, from the programmers' perspective, the development of cloud applications remains a major challenge. In this paper we introduce a programming language that allows Cloud applications to monitor and control their own deployment. Our language originates from the Abstract Behavioral Specification (ABS) language: a high-level object-oriented language for modeling concurrent systems. We extend the ABS language with Deployment Components which abstract over Virtual Machines of the Cloud and which enable any ABS application to distribute itself among multiple Cloud-machines. ABS models are executed by transforming them to distributed-object Haskell code. As a result, we obtain a Cloud-aware programming language which supports a full development cycle including modeling, resource analysis and code generation. Partly funded by the EU project FP7-610582 Envisage. This work was carried out on the Dutch national e-infrastructure with the support of SURF Foundation.

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