Results 71 to 80 of about 850 (217)

A Deadlock Prevention Policy for Flexible Manufacturing Systems Modeled With Petri Nets Using Structural Analysis

IEEE Access, 2019
This paper derives an iterative deadlock prevention policy for systems of simple sequential processes with resources (S3PRs) based on structural analysis, which consists of two stages. The first stage is called siphons control.
Wei Duan, Chunfu Zhong, Xiang Wang, Ateekh Ur Rehman, Usama Umer, Naiqi Wu   +5 more
doaj   +1 more source

Identity Impermanence as a Generic Social Process: The Malleability of Gender in Transgender and Nonbinary People's Lives

Symbolic Interaction, EarlyView.
Drawing on 40 in‐depth interviews with transgender and nonbinary people, we found that respondents' gender identities or displays shifted day‐by‐day and audience‐by‐audience. The first describes respondents shifting their identities and displays based on feeling their way through gender while the latter describes feeling out an audience.
Stef M. Shuster, Andrew Kirks‐Cler
wiley   +1 more source

Deadlock Prevention Policy with Behavioral Optimality or Suboptimality Achieved by the Redundancy Identification of Constraints and the Rearrangement of Monitors

Discrete Dynamics in Nature and Society, 2015
This work develops an iterative deadlock prevention method for a special class of Petri nets that can well model a variety of flexible manufacturing systems. A deadlock detection technique, called mixed integer programming (MIP), is used to find a strict
Liang Hong, YiFan Hou, JunFeng Jing, AnRong Wang, Dmitry A. Litvin   +4 more
doaj   +1 more source

Evaluation Methodology, Numerical Verification and Retrofilling Procedure for Power Transformers to Ensure K‐Class Flame Retardancy and Environmentally Friendly

High Voltage, EarlyView.
ABSTRACT With increasing demands for fire safety and environmental friendliness, retrofilling transformers with alternative insulating liquids has become a growing trend. However, retrofilling power transformers remains uncertain, as more residual mineral oil compromises K‐class flame retardancy, and its impact on environmental performance has yet to ...
Zhenfu Tang, Yihua Qian, Dan Zhou, Wei Hu, Feipeng Wang, Yang Xu   +5 more
wiley   +1 more source

Control Law for Two-Process Flexible Manufacturing Systems Modeled Using Petri Nets

Mathematics
The deadlock control problem in flexible manufacturing systems (FMSs) has received much attention in recent years. The formalism of the Petri net is employed to effectively model, analyze, and control deadlocks in an FMS case study.
Yang Yang, Junjun Yang, Na Liang, Chunfu Zhong   +3 more
doaj   +1 more source

The Problem With Efficiency as a Pervasive Principle in Business School Academia, and What a Sufficiency‐Based Approach Can Do Better

British Journal of Management, EarlyView.
Abstract Efficiency is a pervasive yet insufficiently challenged managerial principle and an integral part of business school academia. However, while there is compelling evidence that efficiency gains can have severe undesirable social and ecological consequences that reduce overall welfare both in terms of well‐being and natural resources, business ...
Stephan M. Schaefer, Christopher Wickert
wiley   +1 more source

Design of Maximally Permissive Controllers for Solving Deadlock Problems in Flexible Manufacturing Systems

Engineering Proceedings
Industry 5.0 aims to integrate humans and machines to achieve greater productivity, personalization, and sustainable development in the production process.
Yen-Liang Pan, Wen-Yi Chuang, Kuang-Hsiung Tan, Ching-Yun Tseng   +3 more
doaj   +1 more source

Design of an Improved Think Globally Act Locally Approach for the Computation of Petri Nets Based Liveness Enforcing Supervisors of FMSs

IEEE Access
An improved think-globally-act-locally (ITGAL) method is proposed in this paper for the computation of a liveness enforcing/deadlock prevention supervisor containing of a set control places (CPs) for a Petri net (PN) model of a flexible manufacturing ...
Murat Uzam, Ahmed M. El-Sherbeeny, Weiwen Guo, Zhiwu Li   +3 more
doaj   +1 more source

Development of Critical-Siphon Theory to Fastest Deadlock Controller for Flexible Manufacturing Systems and Computer-Integrated Manufacturing

MATEC Web of Conferences, 2016
Since decades, Flexible Manufacturing System (FMS) is a significant part of automated production and manufacturing. In the development of FMS, deadlock prevention becomes a crucial point. This paper present a critical-siphon theory to demonstrate exactly
Chiang Johannes K., Chao Kiekang
doaj   +1 more source

The Multilevel Implications of a Sinn Féin Government in Ireland

The Political Quarterly, Volume 96, Issue 1, Page 173-179, January/March 2025.
Abstract The electoral growth of Sinn Féin on both sides of the Irish border has generated much political and academic attention in recent years. The party could form part of the government in Dublin for the first time at the next Irish general election, though that outcome is far from certain.
Conor J. Kelly
wiley   +1 more source