Top-k (preference) queries are used in several domains to retrieve the set of k tuples that more closely match a given query. For high-dimensional spaces, evaluation of top-k queries is expensive, as data and space partitioning indices perform worse than sequential scan. An alternative approach is the use of sorted lists to speed up query evaluation. This approach extends performance gains when...

This paper proposes a nonparametric efficiency measurement approach for the static portfolio selection problem in a general inputs-outputs space, where inputs can include variance and kurtosis and outputs can include mean and skewness. Our work is in the vein of Briec, Kerstens and Jokung (2007) and Jurzenko, Maillet and Merlin (2006) who develop a directional distance (shortage function) appro...

A new fully secure ciphertext-policy attributed based encryption (CP-ABE) scheme with high expressibity access policy is presented. Our CP-ABE scheme uses tree-based access structure which includes AND, OR, threshold and NOT gates which granted high degree of expressibility for encryptor to make an access policy. Moreover, our scheme achieves full security CP-ABE definition where any access str...

Measures of success for any grouting program should include superior technical performance and cost effectiveness. These can be achieved by designing grouts with properties that are specifically tailored to the application. This requires a fundamental understanding of the fluid and set performance characteristics needed for a specific application. For high mobility cement based grouts (HMG), th...

This is a longitudinal case study of two Farsi-speaking children learning English: ‘Bernard’ and ‘Melissa’, who were 7;4 and 8;4 at the start of data collection. The research deals with the initial state and further development in the child second language (L2) acquisition of syntax regarding the presence or absence of copula as a functional category, as well as the role and degree of L1 influe...

Full Text HTML Hi-Res PDF [2186K] PDF w/ Links [820K] Subscriber Access Abstract | Supporting Info Full Text HTML Hi-Res PDF [2448K] PDF w/ Links [888K] Subscriber Access Abstract Full Text HTML Hi-Res PDF [3598K] PDF w/ Links [851K] Subscriber Access Page 3 of 8 Analytical Chemistry: Volume 83, Issue 9 (ACS Publications) 19/4/2554 http://pubs.acs.org/toc/ancham/83/9 Effect of Carrier Fluid Vis...

with the implementation of the affordable care act (aca), access to insurance and coverage of preventive care services has been expanded. by removing the barrier of shared costs for preventive care, it is expected that an increase in utilization of preventive care services will reduce the cost of chronic diseases. early detection and treatment is anticipated to be less costly than treatment at ...