To describe and integrate various policies applied in different domains, the definition of the family of OntoRBAC based on the ontology of a general role-based access control （RBAC） policy is proposed, which can sup...To describe and integrate various policies applied in different domains, the definition of the family of OntoRBAC based on the ontology of a general role-based access control （RBAC） policy is proposed, which can support and extend the RBAC96 model. The uniform ontology-based description mechanism of secure policies is applied in OntoRBAC, which can be used to describe different secure policies in distributed systems and integrate policies in semantic level with upper concepts. In addition, some rules have been defined to reason within the OntoRBAC to extend the inference algorithms in ontology, which makes the system accommodate itself to RBAC policies better.展开更多
In indigenous and contemporary societies, different elements of social and political institutions have come up with various inner mechanisms that are unique to their societies that can adjudicate in conflict situation...In indigenous and contemporary societies, different elements of social and political institutions have come up with various inner mechanisms that are unique to their societies that can adjudicate in conflict situations. In traditional, indigenous Yoruba societies, agba （elders） were usually relied upon as agents and institutions of conflict resolution in view of certain qualities possessed by this category of people. This paper focuses attention on the role of agba （elders） in conflict resolution at various levels of Yoruba life. We acknowledge that agba （elders） have performed these roles in traditional, indigenous Yoruba societies. The opinion expressed in this paper is that agba, as theoretical and practical conflict resolution mechanism, can be philosophically developed and used as an alternative model to the current means of resolving conflicts through wars and terrorism and other forms of violence by aggrieved individuals and groups in national and international arenas.展开更多
Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics...Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control mechanism.However,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal contexts.This transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of RBAC.In this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal contexts.Our discussion is on two lines of inquiry.We present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.展开更多
基金The National Natural Science Foundation of China(No60403027)
文摘To describe and integrate various policies applied in different domains, the definition of the family of OntoRBAC based on the ontology of a general role-based access control （RBAC） policy is proposed, which can support and extend the RBAC96 model. The uniform ontology-based description mechanism of secure policies is applied in OntoRBAC, which can be used to describe different secure policies in distributed systems and integrate policies in semantic level with upper concepts. In addition, some rules have been defined to reason within the OntoRBAC to extend the inference algorithms in ontology, which makes the system accommodate itself to RBAC policies better.
文摘In indigenous and contemporary societies, different elements of social and political institutions have come up with various inner mechanisms that are unique to their societies that can adjudicate in conflict situations. In traditional, indigenous Yoruba societies, agba （elders） were usually relied upon as agents and institutions of conflict resolution in view of certain qualities possessed by this category of people. This paper focuses attention on the role of agba （elders） in conflict resolution at various levels of Yoruba life. We acknowledge that agba （elders） have performed these roles in traditional, indigenous Yoruba societies. The opinion expressed in this paper is that agba, as theoretical and practical conflict resolution mechanism, can be philosophically developed and used as an alternative model to the current means of resolving conflicts through wars and terrorism and other forms of violence by aggrieved individuals and groups in national and international arenas.
基金the financial support from Department of Science and Technology,Government of India under the grant:SR/CSRI/118/2014
文摘Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control mechanism.However,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal contexts.This transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of RBAC.In this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal contexts.Our discussion is on two lines of inquiry.We present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.
