software Defined Networks paradigm decouples network control from switches and is directly programmable. A relatively centralized control plane together with developed APIs between control and data plane allows it to ...
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ISBN:
(纸本)9781728161365
software Defined Networks paradigm decouples network control from switches and is directly programmable. A relatively centralized control plane together with developed APIs between control and data plane allows it to retrieve a global view of network traffic. Traffic estimation algorithm, which aims to generate a realtime and precise traffic flow undergoing with acceptable overhead, is fundamental for traffic engineering and QoS guarantee. A few traffic estimation algorithms is proposed based on software Defined Networks paradigm, such as Flowsense and Payless. We propose a reactive traffic estimation algorithm to retrieve network traffic information. this reactive traffic estimation algorithm sends two query messages after a flow table is installed, and estimates upper bound bandwidth. We run a simulation on Mininet with Ryu as controller and OVS as data plane switch to test proposed algorithm. Simulation shows that this algorithm shows a better comprehensive performance in aspect of realtime and bandwidth overhead.
the Coordination Reform of 2012 requires Norwegian municipalities and regional health authorities to enter into legally binding service agreements. Although several research projects have been undertaken to analyse th...
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the Coordination Reform of 2012 requires Norwegian municipalities and regional health authorities to enter into legally binding service agreements. Although several research projects have been undertaken to analyse the implications of this reform, there is no central database where researches can be given access and analyse the service agreements. In this paper we present how we use model-driven softwareengineering and user-centric design in an initial development of an information system designed to allow researches to access and analyse service agreements. For this project, it was crucial to discuss the requirements of the system with domain-experts at a high level of abstraction in order to elicit feedback so that the development could proceed at a fast pace and in the right direction. Furthermore, given time and resource constraints, we elected to use a model driven approach using automatic code generation coupled with high-productivity frameworks. In this way we were able to create prototypes so that the developers could get fast feedback from the domain-experts and improvements could be implemented with minimal effort. (c) 2015the Authors. Published by Elsevier B.V.
this study proposes a set of improved defect categorization criteria and analysis strategies based on a synthesis of a variety of commonly used software defect categorization methods, combined withthe actual software...
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Conceptual modeling provides a foundation for the development phases of softwaresystems. UML has become one of the major conceptual modeling tools in Object-Oriented softwareengineering utilized in a wide range of a...
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the present work is written from the standpoint of an industrial consumer of tools, methods, and theories as they concern the building of software-intensive IT (information technology) systems. A personal view is give...
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ISBN:
(纸本)0818620269
the present work is written from the standpoint of an industrial consumer of tools, methods, and theories as they concern the building of software-intensive IT (information technology) systems. A personal view is given of the contribution that advances in softwareengineering and related disciplines have made or might make to the job of improving the way in which systems might be constructed in a predictable, cost-effective manner that meets the customer's requirements.
Information databases today contain many millions of electronic documents. Locating information on the Internet today is problematic, due to the enormous number of documents it contains. Several other studies have fou...
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ISBN:
(纸本)9729881618
Information databases today contain many millions of electronic documents. Locating information on the Internet today is problematic, due to the enormous number of documents it contains. Several other studies have found that associating documents with a subject or list of topics can improve locatability of information on the Internet. Effective cataloguing of information is performed manually, requiring extensive resources. Consequently, most information is currently not catalogued. this paper aims to present a software tool that automatically locates the subject of a document specially developed for this purpose, and to show the results of a test performed using one hundred scientific articles.
A discussion is presented of the different standpoints which, at the beginning of the eighties, have brought forth prototyping as a strategy. the different lines of development are sketched, and the various trends are...
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ISBN:
(纸本)0818620412
A discussion is presented of the different standpoints which, at the beginning of the eighties, have brought forth prototyping as a strategy. the different lines of development are sketched, and the various trends are examined. An examination is made of the following topics: (1) the history of prototyping and the software crises, (2) prototyping terminology, (3) trends that have supported prototyping, (4) methods in line withthe idea of prototyping, (5) areas of research and development that will help to promote and develop prototyping, and (6) integrating prototyping into the concept of evolutionary systems development.
the author summarizes a presentation given at a panel session on safety-critical softwaresystems. Experience withthe development of nuclear power plant protection systems is discussed. the state of the art in this f...
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ISBN:
(纸本)0818620269
the author summarizes a presentation given at a panel session on safety-critical softwaresystems. Experience withthe development of nuclear power plant protection systems is discussed. the state of the art in this field is examined, and the problems entailed in demonstrating the safety of these systems are considered.
the proceedings contains 49 papers from the Fifth International conference on software Reuse. Topics discussed include: functional programming;code reuse;engineering domains;reusable object-oriented components;detecti...
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the proceedings contains 49 papers from the Fifth International conference on software Reuse. Topics discussed include: functional programming;code reuse;engineering domains;reusable object-oriented components;detecting interface violations in component-based software;reliability certification of software components;domain analysis;intentional programming;anticipatory optimization;domain specific languages and tools;cooperative software reuse;object-oriented real time systems;view extraction and view fusion in architectural understanding;scenario-based software architecture reengineering;and reusable interactions for animation.
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