Software Types
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Type Systems for Distributed Programs: Components and Sessions
In this book we develop powerful techniques based on formal methods for the verification of correctness, consistency and safety properties related to dynamic reconfiguration and communication in complex distributed systems. In particular, static analysis techniques based on types and type systems are an adequate methodology considering their success in guaranteeing not only basic safety properties, but also more sophisticated ones like deadlock or lock freedom in concurrent settings.The main contributions of this book are twofold. i) We design a type system for a concurrent object-oriented calculus to statically ensure consistency of dynamic reconfigurations. ii) We define an encoding of the session pi-calculus, which models communication in distributed systems, into the standard typed pi-calculus. We use this encoding to derive properties like type safety and progress in the session pi-calculus by exploiting the corresponding properties in the standard typed pi-calculus.
The Software Industry
Author: Peter Buxmann
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-09-14
Whether ERP software, office applications, open-source products or online games: In terms of its economic characteristics, software differs fundamentally from industrial goods or services. Based on the economic principles and rules of the software industry, the book reveals strategies and business models to software vendors that comprise cooperation, distribution, pricing and production and industrialization strategies, as well as software as a service and platform concepts. Further aspects including the outsourcing behavior of software vendors and users; providing business software as open source software; selecting software; and the value chains in the software industry are also addressed. Based on a number of expert meetings, it contains numerous case studies and new empirical findings. Target audience of the book are professionals and executives from the software, consulting and IT branches as well as students and scholars of business administration, computer science, business and industrial engineering.
Open Source Software Policy Options for NASA Earth and Space Sciences
Author: National Academies of Sciences, Engineering, and Medicine
language: en
Publisher: National Academies Press
Release Date: 2019-01-27
Modern science is ever more driven by computations and simulations. In particular, the state of the art in space and Earth science often arises from complex simulations of climate, space weather, and astronomical phenomena. At the same time, scientific work requires data processing, presentation, and analysis through broadly available proprietary and community software.1 Implicitly or explicitly, software is central to science. Scientific discovery, understanding, validation, and interpretation are all enhanced by access to the source code of the software used by scientists. This report investigates and recommends options for NASA's Science Mission Directorate (SMD) as it considers how to establish a policy regarding open source software to complement its existing policy on open data. In particular, the report reviews existing data and software policies and the lessons learned from the implementation of those policies, summarizes community perspectives, and presents policy options and recommendations for implementing an open source software policy for NASA SMD.