A blockchain based architecture for asset management in coalition operations

To support dynamic communities of interests in coalition operations, new architectures for efficient sharing of ISR assets are needed. The use of blockchain technology in wired business environments, such as digital currency systems, offers an interesting solution by creating a way to maintain a distributed shared ledger without requiring a single trusted authority. In this paper, we discuss how a blockchain-based system can be modified to provide a solution for dynamic asset sharing amongst coalition members, enabling the creation of a logically centralized asset management system by a seamless policy-compliant federation of different coalition systems. We discuss the use of blockchain for three different types of assets in a coalition context, showing how blockchain can offer a suitable solution for sharing assets in those environments. We also discuss the limitations in the current implementations of blockchain which need to be overcome for the technology to become more effective in a decentralized tactical edge environment

A rare case of Levofloxacin induced ventricular arrhythmia

Drug induced cardiac arrhythmias are seen commonly in clinical practice. Amongst drugs, antibiotics have a specific predisposition, and amongst them, macrolides and fluoroquinolones are specifically seen to have such a tendency. However, amongst fluoroquinolones, the rate of incidence of quinolone induced cardiac arrhythmia is reported as 5.4 cases per 10 million prescriptions. Here, we report a rare case of a probable Adverse Drug Reaction (ADR) i.e., Left Ventricular inferoposterior surface bigeminy recorded 24 hours after initiation of levofloxacin which disappeared after 24 hours of its discontinuation

Processes, Roles and Their Interactions

Taking an interaction network oriented perspective in informatics raises the challenge to describe deterministic finite systems which take part in networks of nondeterministic interactions. The traditional approach to describe processes as stepwise executable activities which are not based on the ordinarily nondeterministic interaction shows strong centralization tendencies. As suggested in this article, viewing processes and their interactions as complementary can circumvent these centralization tendencies. The description of both, processes and their interactions is based on the same building blocks, namely finite input output automata (or transducers). Processes are viewed as finite systems that take part in multiple, ordinarily nondeterministic interactions. The interactions between processes are described as protocols. The effects of communication between processes as well as the necessary coordination of different interactions within a processes are both based on the restriction of the transition relation of product automata. The channel based outer coupling represents the causal relation between the output and the input of different systems. The coordination condition based inner coupling represents the causal relation between the input and output of a single system. All steps are illustrated with the example of a network of resource administration processes which is supposed to provide requesting user processes exclusive access to a single resource.Comment: In Proceedings IWIGP 2012, arXiv:1202.422

A Brief Overview of Scalable Distributed Concurrency Services for Hierarchical Locking

As researchers share computational resources, such as objects in large distributed environments, it becomes dicult to achieve scalability of synchronization, and commonly used concurrency protocols currently lack scalability. Our peer-to-peer protocol enhances middleware concurrency services to provide scalability of synchronization enabling resource sharing and computing with distributed objects in systems with a large number of nodes