Dflow workflow management system

Date

1997-09-02

Author

Dengi, C
Neftci, S

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

42
views

0
downloads

Process specification, automatic recovery: concurrency control and heterogeneity among processing entities are known problems of workflow management systems. Dflow provides a workflow specification language which combines the expressive power of a structural programming language with the recovery capabilities of transaction systems. Dflow tries to solve the problems of automatic recovery in its model and the problems of concurrency control and heterogeneity in its architecture.

Subject Keywords

Workflow management software, Concurrency control, Automatic control, Control systems, Computer languages, Computer architecture, Business process re-engineering, Specification languages, Power engineering computing, Power engineering and energy

URI

https://hdl.handle.net/11511/65148

Conference Name

8th International Workshop on Database and Expert Systems Applications

Collections

Department of Computer Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

A Control System Architecture for Control of Non-Affine in Control, Open-Loop Unstable Underactuated Systems Marangoz, Alp; Kutay, Ali Türker (2017-07-25) In this paper, a control system architecture for control of non-affine in control, open-loop unstable underactuated system is discussed. Passivization of the unactuated (internal) system dynamics achieved through perturbation of trajectories of the actuated states, which are calculated through adaptive dynamic inversion technique, based on Tikhonov's theorem. Performance of the controller is shown through simulation of two open-loop unstable and locally uncontrollable example problems.
A shared-medium communication architecture for distributed discrete event systems Schmidt, Klaus Verner; Zaddach, J. (2007-06-29) Recently, several efficient supervisor synthesis approaches for distributed discrete event systems (DES) have been established. In this paper, the implementation of such supervisors on interacting distributed programmable logic controllers (PLCs) on a network is considered for the hierarchical and decentralized control approach elaborated in our previous work. A communication model that captures the controller behavior relevant for communication is developed, and a network architecture together with a sched...
Hierarchical and decentralized multitasking control of discrete event systems Schmidt, Klaus Verner; Cury, José E. R. (2007-12-01) In this paper, a hierarchical and decentralized approach for composite discrete-event systems (DES) that have to fulfill multiple tasks is elaborated. Colored marking generators that can distinguish classes of tasks are used as the system model, and a colored abstraction procedure as well as sufficient conditions for nonblocking and hierarchically consistent control are developed. It is shown that the computational complexity for supervisor computation is reduced. A flexible manufacturing system example dem...
Data integration over horizontally partitioned databases in service-oriented data grids Sunercan, Hatice Kevser Sönmez; Çiçekli, Fehime Nihan; Alpdemir, Mahmut Nedim; Department of Computer Engineering (2010) Information integration over distributed and heterogeneous resources has been challenging in many terms: coping with various kinds of heterogeneity including data model, platform, access interfaces; coping with various forms of data distribution and maintenance policies, scalability, performance, security and trust, reliability and resilience, legal issues etc. It is obvious that each of these dimensions deserves a separate thread of research efforts. One particular challenge among the ones listed above tha...
Hierarchical multitasking control of discrete event systems: Computation of projections and maximal permissiveness Schmidt, Klaus Verner; Cury, José E.r. (null; 2010-12-01) This paper extends previous results on the hierarchical and decentralized control of multitasking discrete event systems (MTDES). Colored observers, a generalization of the observer property, together with local control consistency, allow to derive sufficient conditions for synthesizing modular and hierarchical control that are both strongly nonblocking (SNB) and maximally permissive. A polynomial procedure to verify if a projection fulfills the above properties is proposed and in the case they fail for a g...

Citation Formats

C. Dengi and S. Neftci, “Dflow workflow management system,” Toulouse, France, 1997, p. 16, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65148.