scispace - formally typeset
Search or ask a question
Topic

Process architecture

About: Process architecture is a research topic. Over the lifetime, 4876 publications have been published within this topic receiving 104171 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: This paper develops an original discrete event approach for modelling and performance evaluation of public bicycle-sharing systems by using Petri nets with time, inhibitor arcs and variable arc weights.
Abstract: Public Bicycle-Sharing Systems (PBSS) have been appearing in more and more cities around the world in the last few years. Although their apparent success as an alternative form of public transportation mode, there are major challenges confronting the operators while few scientific works are available to support such complex dynamical systems to influence their economic viability and operational efficiency. One of the most crucial factors for the success of a PBS system is its ability to ensure that bicycles are available for pick up and vacant berths available for bicycle drop off at every station. In this paper, we develop an original discrete event approach for modelling and performance evaluation of public bicycle-sharing systems by using Petri nets with time, inhibitor arcs and variable arc weights.

63 citations

Journal ArticleDOI
TL;DR: A hybrid model based on a new Petri net formalism that merges the concepts of Hybrid Petri Nets and Colored Petri nets to obtain modular and compact models for automated warehouse systems analysis and performance evaluation is presented.
Abstract: An automated warehouse system has two main components: an automated storage and retrieval subsystem consisting of a number of aisles, each one served by a crane, and a picking area which is formed by bays where stock units coming from the aisles are partially emptied by human operators. These two components are connected via an interface area consisting of carousels, conveyors, and buffers. This area is usually modeled as a discrete event system, while the overall system performance depends also on continuous time phenomena. Part I presents a hybrid model based on a new Petri net formalism that merges the concepts of Hybrid Petri Nets and Colored Petri Nets to obtain modular and compact models for these systems. An example is discussed in detail to motivate the introduction of a new formalism. A control oriented simulation tool is also presented. Part II will focus on the application of this formalism to automated warehouse systems analysis and performance evaluation. Finally, a real case study is considered to show the effectiveness of the approach.

63 citations

Patent
09 Apr 1990
TL;DR: In this paper, a method and system in which a programmed digital computer serving as a graphical "engine" is employed to construct an executable model for a complex system using a hierarchy of so-called "Colored" Petri nets (CPN's or CP-nets) is described.
Abstract: A method and system in which a programmed digital computer serving as a graphical "engine" is employed to construct an executable model for a complex system using a hierarchy of so called "Colored" Petri nets (CPN's or CP-nets) The operation of the complex system is specified in terms of a graphical net structure and formal net inscriptions, such as arc expressions and guards, which ensure development of a program, or executable model, and associated data structures, properly defining the system Sophisticated syntax checks and other tools are provided for ensuring that the model so constructed conforms to a set of rules which guarantee valid system behavior

63 citations

Proceedings ArticleDOI
P. Frost1, P. Warren1
19 Jul 2000
TL;DR: The results show that the collaborative design process including VR helped users by providing a method with which their ideas could be better formulated, analyzed, tested, and finally realized.
Abstract: This paper presents a project and considers the possibilities of using virtual reality in architectural design processes. The main goal of the project is to develop a process for collaborative design of laboratory layouts using VR (Cave-technology) as a tool integrated into the concepts of process architecture. The project has been carried out in co-operation with the Chemical Department at Lund Institute of Technology/Lund University. It is a "real" project integrated in the University's programming process. A workshop initiated the design process and was followed by a series of different design events, which were arranged with participants from one research and one education laboratory. At these events the participants made several visits to their future labs in a VR-Cave. The visits were alternated with more traditional design sessions using paper and pencil. The results show that the collaborative design process including VR helped users by providing a method with which their ideas could be better formulated, analyzed, tested, and finally realized. The results from the project have been incorporated into the building program for the new chemical laboratory building.

63 citations

Journal ArticleDOI
01 Jul 1995
TL;DR: Benchmark comparisons between Petri net originated designs and equivalent FSMs show that the former are considerably more efficient in terms of area and speed when designing highly parallel circuits.
Abstract: A system for synthesising synchronous parallel controllers is presented. The system comprises a set of Petri net based CAD tools that have been added to an existing sequential synthesis system. Modules dedicated to the Petri net approach implement algorithms, which test the Petri net controller representation, provide an improved place encoding, and realise a novel method of generating state transition graphs from Petri nets. The algorithms are based on a new method of constructing a restricted reachability graph of a net. The system incorporates different design approaches, and so enables a designer to choose a solution that meets the specific needs of a design best. Benchmark comparisons between Petri net originated designs and equivalent FSMs show that the former are considerably more efficient in terms of area and speed when designing highly parallel circuits.

63 citations


Network Information
Related Topics (5)
Software development
73.8K papers, 1.4M citations
82% related
Scheduling (computing)
78.6K papers, 1.3M citations
82% related
Control theory
299.6K papers, 3.1M citations
82% related
Control system
129K papers, 1.5M citations
81% related
Server
79.5K papers, 1.4M citations
81% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202318
202249
20216
20207
201916
201821