Self-help Ammunition Destruction Options Worldwide (SHADOW)

In response to the increasing number of explosions at ammunition storage sites (ASA), Norwegian People’s Aid (NPA) created Self-Help Ammunition Destruction Options Worldwide (SHADOW), a program emphasizing national capacity building for stockpile management and destruction through low-tech and cost-effective techniques. Following the success of its first SHADOW project in Moldova in 2010, in 2012 NPA implemented another SHADOW project focused on ASAs in cooperation with Moldova’s National Army and Ministry of Defense

Speculative Concurrency Control for Real-Time Databases

In this paper, we propose a new class of Concurrency Control Algorithms that is especially suited for real-time database applications. Our approach relies on the use of (potentially) redundant computations to ensure that serializable schedules are found and executed as early as possible, thus, increasing the chances of a timely commitment of transactions with strict timing constraints. Due to its nature, we term our concurrency control algorithms Speculative. The aforementioned description encompasses many algorithms that we call collectively Speculative Concurrency Control (SCC) algorithms. SCC algorithms combine the advantages of both Pessimistic and Optimistic Concurrency Control (PCC and OCC) algorithms, while avoiding their disadvantages. On the one hand, SCC resembles PCC in that conflicts are detected as early as possible, thus making alternative schedules available in a timely fashion in case they are needed. On the other hand, SCC resembles OCC in that it allows conflicting transactions to proceed concurrently, thus avoiding unnecessary delays that may jeopardize their timely commitment

Moose: Recollections from a Northern Childhood

A creative reflection on growing up with moose