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• Identifying subtypes from medication trajectories requires careful preprocessing and model choice.

Identification of patient subtypes from retrospective Electronic Health Record (EHR) data is fraught with inherent modeling issues, such as missing data and variable length time intervals, and the results obtained are highly dependent ...

The role-based access control (RBAC) has significantly simplified the management of users and permissions in information systems. In dynamic environments, systems are constantly undergoing changes, and accordingly, the associated configurations need to ...

Smartphone contains diverse sensitive private information, such as phone number, contact and credit. The Android platform employs permission mechanism to protect intensive information from illegal leakage. There are several tools to assist users to ...

We propose an approach to placing usage-constraints on RT credentials; issuers specify constraints by designing non-deterministic finite automata. We show by examples that this approach can express constraints of practical interest. We present a ...

Authorization provenance concerns how an authorization is derived. It appears important to define authorization provenance to (1) analyze policy bases, (2) defend against a class of attacks, and (3) audit authorizations. In this paper, we study a notion ...

Role engineering (RE) aims to develop and maintain appropriate role-based access control (RBAC) configurations. However, RE with constraints in place is not well-studied. Constraints usually describe organizations' security and business requirements. An ...

Collaboration among virtual organizations enables domains to effectively share resources. However, it also opens ways for several security and privacy breaches; the problem becomes severe along with the increasing complexity and dynamics of grid ...

Role-based access control (RBAC) has significantly simplified the management of users and permissions in computing systems. In dynamic environments, systems are subject to changes, so that the associated configurations need to be updated accordingly in ...

The role-based access control (RBAC) has significantly simplified the management of users and permissions in computing systems. In dynamic environments, systems are usually undergoing changes, whereas the associated user-role, role-role and role-...

In distributed environments, statements from a number of principals, besides the central trusted party, may influence the derivations of authorization decisions. However, existing authorization logics put few emphasis on this set of principals - ...

New copolyesters derived from poly(β,L-malic acid) have been designed to serve as nanoconjugate platforms in drug delivery. 25% and 50%; methylated derivatives (coPMLA-Me₂₅H₇₅ and coPMLA-Me 50 H 50) with absolute molecular weights of 32 600 Da and 33 ...

In distributed environments, access control decisions depend on statements of multiple agents rather than only one central trusted party. However, existing policy languages put few emphasis on authorization provenances. The capability of managing these ...

The inter-domain role mapping is a basic method for facilitating interoperation in RBAC-based collaborating environments, where each domain employs Role Based Access Control (RBAC) to specify access control policies. Prior to concrete interoperation, ...

Separation-of-Duty (SoD) policy is a fundamental security principle for prevention of fraud and errors in computer security. The research of static SoD (SSoD) policy in recently presented usage control (UCON) model has not been explored. Consequently, ...

Secure interoperation is an increasingly important issue forlarge-scale enterprise applications. In this paper, we investigate, through constraint logic programming (CLP), secure interoperation in collaborating environments which employ Role-Based ...

Establishing interoperability is the first and foremost problem of secure interoperation in multi-domain environments. In this paper, we propose a framework to facilitate the establishment of secure interoperability in decentralized multi-domain ...

Establishing interoperability is the first and foremost problem of secure interoperation in multi-domain environments. In this paper, we propose a framework to facilitate the establishment of secure interoperability in decentralized multi-domain ...