A segmental square-law circuit is described employing silicon carbide nonlinear resistors in a parallel configuration analogous to a conventional diode function generator, but having the advantage of requiring no bias...
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A segmental square-law circuit is described employing silicon carbide nonlinear resistors in a parallel configuration analogous to a conventional diode function generator, but having the advantage of requiring no bias supplies and giving an output noticeably free of discontinuities. An optimization procedure is described by which satisfactory values for the circuit elements were obtained. Using only two segments, the square law was fitted to within 1 volt over a working range of 0 to 100 volts.
In this article, authors identify five levels of object-oriented testing; four of these map nicely into commonly accepted unit, integration, and system levels of traditional software testing. They identify two new tes...
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In this article, authors identify five levels of object-oriented testing; four of these map nicely into commonly accepted unit, integration, and system levels of traditional software testing. They identify two new testing constructs and a directed graph notation that helps formalize object-oriented integrated testing. These are illustrated with an object-oriented formulation of an automated teller machine system. The source code for this system is available from the authors. Authors begin an important distinction: structure vs. behavior. Most of the popular notations used in software development (Entity relationship models, dataflow diagrams, structure charts and PDLs) portray software structure: the components, relationships among these, the interfaces, control and dataflow. The object-oriented constructs that are introduced here are deliberately behavioral rather than structural. To provide a context for object-oriented integration testing, authors highlight the traditional software (and system) testing notions that have special implications for object-oriented software testing.
Describing state-of-the-art solutions in distributed system architectures, Integration of Services into Workflow Applications presents a concise approach to the integration of loosely coupled services into workflow ap...
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ISBN:
(数字)9780429069284
ISBN:
(纸本)9781498706476;1498706479
Describing state-of-the-art solutions in distributed system architectures, Integration of Services into Workflow Applications presents a concise approach to the integration of loosely coupled services into workflow applications. It discusses key challenges related to the integration of distributed systems and proposes solutions, both in terms of theoretical aspects such as models and workflow scheduling algorithms, and technical solutions such as software tools and APIs. The book provides an in-depth look at workflow scheduling and proposes a way to integrate several different types of services into one single workflow application. It shows how these components can be expressed as services that can subsequently be integrated into workflow applications. The workflow applications are often described as acyclic graphs with dependencies which allow readers to define complex scenarios in terms of basic tasks. Presents state-of-the-art solutions to challenges in multi-domain workflow application definition, optimization, and execution Proposes a uniform concept of a service that can represent executable components in all major distributed software architectures used today Discusses an extended model with determination of dataflows among parallel paths of a workflow application Since workflow applications often process big data, the book explores the dynamic management of data with various storage constraints during workflow execution. It addresses several practical problems related to data handling, including data partitioning for parallel processing next to service selection and scheduling, processing data in batches or streams, and constraints on data sizes that can be processed at the same time by service instances. Illustrating several workflow applications that were proposed, implemented, and benchmarked in a real Beesy Cluster environment, the book includes templates for multidisciplinary workflow applications that readers can use in a wide range of contexts.
In this special issue, we focus on the challenges of managing organizational security, examining some of the nontechnical aspects of security that assure that the technology is chosen, implemented, and used appropriat...
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In this special issue, we focus on the challenges of managing organizational security, examining some of the nontechnical aspects of security that assure that the technology is chosen, implemented, and used appropriately and well.
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