As a general design criterion, a symmetric key cipher should not be closed under functional composition due to the implications on the security of the cipher. However, there are scenarios in which this property is desirable and can be obtained without reducing the security of a cipher by increasing the computational workload of the cipher. We expand the idea of a symmetric key cipher being clos...

Detecting repetitive “phases” in program execution is helpful for program understanding, runtime optimization, and for reducing simulation/profiling workload. The nature of the phases that may be found, however, depend on the kinds of programs, as well how programs interact with the underlying hardware. We present a technique to detect long term and variable length repetitive program behaviour ...

Background: Identifying the predisposing factors of neck and shoulder complaints and finding solutions to avoid them could improve the occupational health condition of the nurses. In this study, we aimed at determining the role of psychological and physical occupational factors in developing neck and shoulder complaints among the participants.   Methods: This analytic cross-sectional st...

OBJECTIVE To determine whether automated classification of document citations can be useful in reducing the time spent by experts reviewing journal articles for inclusion in updating systematic reviews of drug class efficacy for treatment of disease. DESIGN A test collection was built using the annotated reference files from 15 systematic drug class reviews. A voting perceptron-based automate...

Lockheed Martin Advanced Technology Laboratories, in conjunction with Lockheed Martin Maritime Systems and Sensors and Lockheed Martin Aeronautics Advanced Development Programs, performed a set of experiments in cooperation with the U.S. Navy involving collaborative, unmanned surface and air vehicle mission execution. Our multi-domain, collaborative research focused on increasing the ability of...

In this work, we characterized the memory performance and in particular the impact of coherence overhead and process migration of a shared-bus shared-memory multiprocessor running a DSS workload. When the number of processor is increased in order to achieve higher computational power, the bus becomes a major bottleneck of the system. We evaluated solutions that can greatly reduce that bottlenec...

OBJECTIVE To determine whether a factorized version of the complement naïve Bayes (FCNB) classifier can reduce the time spent by experts reviewing journal articles for inclusion in systematic reviews of drug class efficacy for disease treatment. DESIGN The proposed classifier was evaluated on a test collection built from 15 systematic drug class reviews used in previous work. The FCNB classif...

Variant Stochastic cracking is a significantly more resilient approach to adaptive indexing. It showed [1]that Stochastic cracking uses each query as a hint on how to reorganize data, but not blindly so; it gains resilience and avoids performance bottlenecks by deliberately applying certain arbitrary choices in its decision making. Therefore bring, adaptive indexing forward to a mature formulat...