Angebote zu "Workflows" (19 Treffer)

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SOA und Servicekomposition
79,00 € *
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Moderne Unternehmen befinden sich im ständigen Fluss der sich ändernden Anforderungen und sich neu ergebenen Geschäftsziele. Daher wird in der Softwareentwicklung die Serviceorientierung (SOA) als neues Realisierungsparadigma propagiert. Sie erlaubt lose gekoppelte Services bedarfsbezogen in Workflows zu aggregieren, um sehr agil auf neue Geschäftsanforderungen reagieren zu können. Hierbei ergeben sich zentrale Herausforderungen bei der Erstellung der Workflows durch die Heterogenität der Services und das Identifizieren geeigneter Services und vertrauenswürdiger Serviceanbieter. Das vorliegende Buch adressiert genau diese wirtschaftlich relevanten Aspekte beim Übergang eines fachlichen Geschäftsprozesses hinzu einer lauffähigen Servicekomposition. Es werden Verfahren vorgestellt, die über einen software-unterstützten Prozess die Service-Interoperabilität erzielen. Weiterhin wird auf konkrete Service-Registries eingegangen, die einerseits Geschäftskontext, wie Service-Level-Agreements (SLAs), und die Quality-of-Service (QoS) einbeziehen und andererseits datengetriebene Servicekompositionen erkennen und herleiten können.

Anbieter: Dodax
Stand: 01.10.2020
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Performance Enhancing Workflow Scheduling for C...
89,90 € *
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The idea of providing computing as a utility has become a reality today with the advent of Cloud computing. Cloud Infrastructure as a Service (IaaS) enables the cloud user to use services in a flexible environment. The computationally intensive applications and data intensive applications utilize Cloud resources. These applications are represented by workflows or Directed Acyclic Graphs (DAG). Workflow scheduling is a complex issue in IaaS because multiple scheduling parameters are to be considered to satisfy the Quality of Service parameters. The heuristic-based and meta-heuristic based scheduling strategies are to be devised to achieve near optimal solutions within polynomial time. In this book, a variety of scheduling algorithms are proposed. They are Customer Facilitated Cost based scheduling (CFCSC), Level Based Task Prioritization (LBTP), Workflow Scheduling for Public Cloud using Genetic Algorithm (WSGA) and Differential Evolution Algorithm for Workflow Scheduling (DEWS) for Public Cloud. This book provides the picture of Workflow scheduling in the context of Cloud Computing and it will be valuable for those who are doing research in this area.

Anbieter: Dodax
Stand: 01.10.2020
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Leistungsverbessernde Workflow-Planung
89,90 € *
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Die Idee, Computing als Dienstprogramm anzubieten, ist heute mit dem Aufkommen von Cloud Computing Realität geworden. Cloud Infrastructure as a Service (IaaS) ermöglicht es dem Cloud-Benutzer, Dienste in einer flexiblen Umgebung zu nutzen. Die rechen- und datenintensiven Anwendungen nutzen die Ressourcen der Cloud aus. Diese Anwendungen werden durch Workflows oder Directed Acyclic Graphs (DAG) dargestellt. Die Planung von Workflows ist ein komplexes Thema im IaaS, da mehrere Planungsparameter zu berücksichtigen sind, um die Quality of Service Parameter zu erfüllen. Die heuristisch und meta-heuristisch basierten Scheduling-Strategien sollen so entwickelt werden, dass innerhalb der Polynomzeit nahezu optimale Lösungen erreicht werden. In diesem Buch wird eine Vielzahl von Scheduling-Algorithmen vorgeschlagen.Künstliche Intelligenz wurde verwendet, um dieses Buch zu übersetzen.

Anbieter: Dodax
Stand: 01.10.2020
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Temporal QOS Management in Scientific Cloud Wor...
39,19 € *
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Cloud computing can provide virtually unlimited scalable high performance computing resources. Cloud workflows often underlie many large scale data/computation intensive e-science applications such as earthquake modelling, weather forecasting and astrophysics. During application modelling, these sophisticated processes are redesigned as cloud workflows, and at runtime, the models are executed by employing the supercomputing and data sharing ability of the underlying cloud computing infrastructures. Temporal QOS Management in Scientific Cloud Workflow Systems focuses on real world scientific applications which often must be completed by satisfying a set of temporal constraints such as milestones and deadlines. Meanwhile, activity duration, as a measurement of system performance, often needs to be monitored and controlled. This book demonstrates how to guarantee on-time completion of most, if not all, workflow applications. Offering a comprehensive framework to support the lifecycle of time-constrained workflow applications, this book will enhance the overall performance and usability of scientific cloud workflow systems. Explains how to reduce the cost to detect and handle temporal violations while delivering high quality of service (QoS) Offers new concepts, innovative strategies and algorithms to support large-scale sophisticated applications in the cloud Improves the overall performance and usability of cloud workflow systems

Anbieter: Dodax
Stand: 01.10.2020
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Information Flow Based Security Control Beyond ...
66,80 € *
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Role-based access control (RBAC) is a widely used technology to control information flows as well as control flows within and between applications in compliance with restrictions implied by security policies, in particular, to prevent disclosure of information or access to resources beyond restrictions defined by those security policies. Since RBAC only provides the alternatives of either granting or denying access, more fine-grained control of information flows such as "granting access to information provided that it will not be disclosed to targets outside our organisation during further processing" is not possible. In business processes, in particular those spanning several organisations, which are commonly defined using business process execution language (BPEL), useful information flows not violating security policy-implied limitations would be prevented if only the access control capabilities offered by RBAC are in use. The book shows a way of providing more refined methods of information flow control that allow for granting access to information or resources by taking in consideration the former or further information flow in a business process requesting this access. The methods proposed are comparatively easy to apply and have been proven to be largely machine-executable by a prototypical realisation. As an addition, the methods are extended to be also applicable to BPEL-defined workflows that make use of Grid services or Cloud services. IT Security Specialists Chief Information Officers (CIOs) Chief Security Officers (CSOs) Security Policy and Quality Assurance Officers and Managers Business Process and Web/Grid/Cloud Service Designers, Developers, Operational Managers Interested Learners / Students in the Field of Security Management.

Anbieter: Dodax
Stand: 01.10.2020
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Information Flow Based Security Control Beyond ...
82,90 CHF *
ggf. zzgl. Versand

Role-based access control (RBAC) is a widely used technology to control information flows as well as control flows within and between applications in compliance with restrictions implied by security policies, in particular, to prevent disclosure of information or access to resources beyond restrictions defined by those security policies. Since RBAC only provides the alternatives of either granting or denying access, more fine-grained control of information flows such as “granting access to information provided that it will not be disclosed to targets outside our organisation during further processing” is not possible. In business processes, in particular those spanning several organisations, which are commonly defined using business process execution language (BPEL), useful information flows not violating security policy-implied limitations would be prevented if only the access control capabilities offered by RBAC are in use. The book shows a way of providing more refined methods of information flow control that allow for granting access to information or resources by taking in consideration the former or further information flow in a business process requesting this access. The methods proposed are comparatively easy to apply and have been proven to be largely machine-executable by a prototypical realisation. As an addition, the methods are extended to be also applicable to BPEL-defined workflows that make use of Grid services or Cloud services. IT Security Specialists Chief Information Officers (CIOs) Chief Security Officers (CSOs) Security Policy and Quality Assurance Officers and Managers Business Process and Web/Grid/Cloud Service Designers, Developers, Operational Managers Interested Learners / Students in the Field of Security Management.

Anbieter: Orell Fuessli CH
Stand: 01.10.2020
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The Design of Cloud Workflow Systems
68,90 CHF *
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Cloud computing is the latest market-oriented computing paradigm which brings software design and development into a new era characterized by 'XaaS', i.e. everything as a service. Cloud workflows, as typical software applications in the cloud, are composed of a set of partially ordered cloud software services to achieve specific goals. However, due to the low QoS (quality of service) nature of the cloud environment, the design of workflow systems in the cloud becomes a challenging issue for the delivery of high quality cloud workflow applications. To address such an issue, this book presents a systematic investigation to the three critical aspects for the design of a cloud workflow system, viz. system architecture, system functionality and quality of service. Specifically, the system architecture for a cloud workflow system is designed based on the general four-layer cloud architecture, viz. application layer, platform layer, unified resources layer and fabric layer. The system functionality for a cloud workflow system is designed based on the general workflow reference model but with significant extensions to accommodate software services in the cloud. The support of QoS is critical for the quality of cloud workflow applications. This book presents a generic framework to facilitate a unified design and development process for software components that deliver lifecycle support for different QoS requirements. While the general QoS requirements for cloud workflow applications can have many dimensions, this book mainly focuses on three of the most important ones, viz. performance, reliability and security. In this book, the architecture, functionality and QoS management of our SwinDeW-C prototype cloud workflow system are demonstrated in detail as a case study to evaluate our generic design for cloud workflow systems. To conclude, this book offers a general overview of cloud workflow systems and provides comprehensive introductions to the design of the system architecture, system functionality and QoS management.

Anbieter: Orell Fuessli CH
Stand: 01.10.2020
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Information Flow Based Security Control Beyond ...
59,99 € *
ggf. zzgl. Versand

Role-based access control (RBAC) is a widely used technology to control information flows as well as control flows within and between applications in compliance with restrictions implied by security policies, in particular, to prevent disclosure of information or access to resources beyond restrictions defined by those security policies. Since RBAC only provides the alternatives of either granting or denying access, more fine-grained control of information flows such as “granting access to information provided that it will not be disclosed to targets outside our organisation during further processing” is not possible. In business processes, in particular those spanning several organisations, which are commonly defined using business process execution language (BPEL), useful information flows not violating security policy-implied limitations would be prevented if only the access control capabilities offered by RBAC are in use. The book shows a way of providing more refined methods of information flow control that allow for granting access to information or resources by taking in consideration the former or further information flow in a business process requesting this access. The methods proposed are comparatively easy to apply and have been proven to be largely machine-executable by a prototypical realisation. As an addition, the methods are extended to be also applicable to BPEL-defined workflows that make use of Grid services or Cloud services. IT Security Specialists Chief Information Officers (CIOs) Chief Security Officers (CSOs) Security Policy and Quality Assurance Officers and Managers Business Process and Web/Grid/Cloud Service Designers, Developers, Operational Managers Interested Learners / Students in the Field of Security Management.

Anbieter: Thalia AT
Stand: 01.10.2020
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The Design of Cloud Workflow Systems
66,00 € *
ggf. zzgl. Versand

Cloud computing is the latest market-oriented computing paradigm which brings software design and development into a new era characterized by 'XaaS', i.e. everything as a service. Cloud workflows, as typical software applications in the cloud, are composed of a set of partially ordered cloud software services to achieve specific goals. However, due to the low QoS (quality of service) nature of the cloud environment, the design of workflow systems in the cloud becomes a challenging issue for the delivery of high quality cloud workflow applications. To address such an issue, this book presents a systematic investigation to the three critical aspects for the design of a cloud workflow system, viz. system architecture, system functionality and quality of service. Specifically, the system architecture for a cloud workflow system is designed based on the general four-layer cloud architecture, viz. application layer, platform layer, unified resources layer and fabric layer. The system functionality for a cloud workflow system is designed based on the general workflow reference model but with significant extensions to accommodate software services in the cloud. The support of QoS is critical for the quality of cloud workflow applications. This book presents a generic framework to facilitate a unified design and development process for software components that deliver lifecycle support for different QoS requirements. While the general QoS requirements for cloud workflow applications can have many dimensions, this book mainly focuses on three of the most important ones, viz. performance, reliability and security. In this book, the architecture, functionality and QoS management of our SwinDeW-C prototype cloud workflow system are demonstrated in detail as a case study to evaluate our generic design for cloud workflow systems. To conclude, this book offers a general overview of cloud workflow systems and provides comprehensive introductions to the design of the system architecture, system functionality and QoS management.

Anbieter: Thalia AT
Stand: 01.10.2020
Zum Angebot