In this paper we describe an XML-based platform for dynamic active node policy updates. XML supports the definition of specific policy languages, their extension to satisfy new needs and the management of deployed policies on different active nodes. We show an example of the management of router packet forwarding policies where the XML policies that drive the packet routing are updated at run-t...

In this paper we discuss implementation issues of a distributed privacy enforcement scheme to support Owner-Retained Access Control for digital data repositories. Our approach is based on the Java Security Framework. In order to achieve policy enforcement dependent on the accessed data object, we had to implement our own class loader that supports instance-level policy assignment. Access polici...

Contextual policy search allows adapting robotic movement primitives to different situations. For instance, a locomotion primitive might be adapted to different terrain inclinations or desired walking speeds. Such an adaptation is often achievable by modifying a relatively small number of hyperparameters; however, learning when performed on an actual robotic system is typically restricted to a ...

Web applications are both the consumers and providers of information. To increase customer confidence, many websites choose to publish their privacy protection policies. However, policy conformance is often neglected. We propose a logic based framework for formally specifying and reasoning about the implementation of privacy protection by a web application. A first order extension of computatio...

A study was conducted to investigate honeybee colonies absconding from beehives and its financial implication among beekeepers in Tabora and Katavi regions, Western Tanzania. Four districts were selected on the basis of adoption of improved beehives. A total of 198 beekeepers were randomly selected for interviews. Data collected from beekeepers using a questionnaire were supplemented with data ...