Resource-Task Network

Resource-Task Network

The Resource-Task Network (RTN) is a unified framework for the description and solution of a variety of process scheduling problems. It was developed by Prof. Costas Pantelides [Constantinos C. Pantelides: "Unified Frameworks for the Optimal Process Planning and Scheduling. Proceedings of the 2nd Conference on the Foundations of Computer Aided Operations", page 253. New York: Cache Publications: 1994.] at the Centre for Process Systems Engineering, Imperial College of Science, Technology and Medicine in London, U.K. The RTN allows the development of simple mathematical programming formulations based on the uniform characterisation of all available resources.

Process Representation

The RTN regards all processes as bipartite graphs comprising two types of nodes: Resources and Tasks. A task is an operation that transforms a certain set of resources into another set. The concept of resource is entirely general and includes all entities that are involved in the process steps, such as materials (raw-materials, intermediates and products), processing and storage equipment (tanks, reactors, etc.), utilities (operators, steam, etc.) as well as equipment conditions (clean, dirty).

RTN-based Scheduling Formulations

RTN-based mathematical formulations can either be discrete-time or continuous-time formulations. The original is a discrete-time formulation, where the time horizon of interest is discretized into a fixed number (T) of uniform time intervals. Since then, a few continuous-time formulations based on the RTN have appeared and the currently most efficient ones can be found in [Pedro M. Castro, Ana P. Barbosa-Póvoa, Henrique A. Matos and Augusto Q. Novais: "Simple Continuous-Time Formulation for Short-Term Scheduling of Batch and Continuous Processes" Ind. Eng. Chem. Res. 2004, 43, 105-118.] for multipurpose plants and in [Pedro M. Castro, Ignacio E. Grossmann and Augusto Q. Novais : "New Continuous-Time Models for the Scheduling of Multistage Batch Plants with Sequence Dependent Changeovers" Ind. Eng. Chem. Res. 2006, 45, 6120-6226.] for multistage plants.


Wikimedia Foundation. 2010.

См. также в других словарях:

  • Network Access Protection — (NAP) is a Microsoft technology for controlling network access of a computer host based on the system health of the host, first introduced in Windows Server 2008. With Network Access Protection, system administrators of an organization s computer …   Wikipedia

  • Network transparency — in its most general sense refers to the ability of a protocol to transmit data over the network in a manner which is transparent (invisible) to those using the applications that are using the protocol. The term is often applied in the context of… …   Wikipedia

  • Network architecture — is the design of a communications network. It is a framework for the specification of a network s physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in… …   Wikipedia

  • Network File System — (NFS)  протокол сетевого доступа к файловым системам, первоначально разработан Sun Microsystems в 1984 году. Основан на протоколе вызова удалённых процедур (ONC RPC, Open Network Computing Remote Procedure Call, RFC 1057, RFC 1831).… …   Википедия

  • Network for Pancreatic Organ Donors with Diabetes — Founded 2007 Origins The criticial need to understand the human pancreas Key people Mark Atkinson, Roberto Gianani, George Eisenbarth, Alberto Pugliese, Martha Campbell Thompson, Joyce …   Wikipedia

  • Resource (computer science) — A resource, or system resource, is any physical or virtual component of limited availability within a computer system. Every device connected to a computer system is a resource. Every internal system component is a resource. Virtual system… …   Wikipedia

  • Resource (Web) — The concept of Resource is primitive in the Web architecture, and is used in the definition of its fundamental elements. The term was first introduced to refer to targets of Uniform Resource Locators (URLs), but its definition has been further… …   Wikipedia

  • Network File System (protocol) — Internet protocol suite Application layer BGP DHCP DNS FTP HTTP …   Wikipedia

  • Network neutrality — This article is about the general principle of network neutrality. For its specific application to Canada, see Network neutrality in Canada. For its application to the U.S., see Network neutrality in the United States. Network Neutrality Related… …   Wikipedia

  • Windows Task Scheduler — Task Scheduler is a component of Microsoft Windows that provides the ability to schedule the launch of programs or scripts at pre defined times or after specified time intervals. It was first introduced in the Windows 95 Plus! pack as System… …   Wikipedia

Поделиться ссылкой на выделенное

Прямая ссылка:
Нажмите правой клавишей мыши и выберите «Копировать ссылку»