Exception handling in distributed workflow systems using mobile agents

2005 ◽  
Author(s):  
Jiannong Cao ◽  
Jin Yang ◽  
Wai Ting Chan ◽  
C. Xu
Keyword(s):  
Mobile Agents ◽  
Exception Handling ◽  
Workflow Systems ◽  
Distributed Workflow

W-RBAC — A Workflow Security Model Incorporating Controlled Overriding of Constraints

2003 ◽  
Vol 12 (04) ◽  
pp. 455-485 ◽  
Author(s):  
Jacques Wainer ◽  
Paulo Barthelmess ◽  
Akhil Kumar
Keyword(s):  
Exception Handling ◽  
Preference Ranking ◽  
Role Based Access Control ◽  
Security Model ◽  
Workflow Systems ◽  
Basic Model ◽  
Access Control Models ◽  
Role Based ◽  
Workflow Tasks ◽  
Selection Of

This paper presents a pair of role-based access control models for workflow systems, collectively known as the W-RBAC models. The first of these models, W0-RBAC is based on a framework that couples a powerful RBAC-based permission service and a workflow component with clear separation of concerns for ease of administration of authorizations. The permission service is the focus of the work, providing an expressive logic-based language for the selection of users authorized to perform workflow tasks, with preference ranking. W1-RBAC extends the basic model by incorporating exception handling capabilities through controlled and systematic overriding of constraints.

Flexibility and Security of Careflow Systems Modeled by Petri Nets

2011 ◽  
pp. 84-111
Author(s):  
Boleslaw Mikolajczak
Keyword(s):  
Petri Nets ◽  
Cutaneous Melanoma ◽  
Conceptual Modeling ◽  
Behavioral Flexibility ◽  
Exception Handling ◽  
Colored Petri Nets ◽  
Healthcare Industry ◽  
Workflow Systems ◽  
Behavioral Features ◽  
Multi Level

The purpose of this chapter is to present an interplay of two important structural and behavioral features of robust intelligence in careflow systems, called flexibility and multi-level security. The chapter deals with design and analysis of careflow systems, i.e. workflow systems with applications in broadly understood healthcare industry. The authors focus on providing a robust intelligence to such systems in a form of structural and behavioral flexibility. They analyze several forms of design and run-time flexibility. However, the authors focus on case handling systems, exception handling, and on careflow systems with sub-processes called worklets. They also present how to model multi-level security within careflow systems that already have desired forms of flexibility. This implies that flexibility and security are conceptually independent and can therefore be modeled with Petri nets separately and incrementally in sequential order, first flexibility and then security. The authors apply Petri nets and colored Petri nets as conceptual modeling tool. They use example of Cutaneous Melanoma (CM) to illustrate some of our considerations.

scholarly journals Integrating Provenance Data from Distributed Workflow Systems with ProvManager

2010 ◽  
pp. 286-288 ◽  
Author(s):  
Anderson Marinho ◽  
Leonardo Murta ◽  
Cláudia Werner ◽  
Vanessa Braganholo ◽  
Eduardo Ogasawara ◽  
...  
Keyword(s):  
Workflow Systems ◽  
Distributed Workflow ◽  
Provenance Data
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