A vector instruction set is a well known method for exposing bandwidth to applications. Although extensively studied in the scientific programming community, less work exists on vectorizing other kinds of applications. This work examines vectorizing a traditional database operation, a Grace hash-join. We how to vectorize both the hash and join phases of the algorithm, and present performance re...

This article proposes definitions of lying and deception in strategic settings. A critical distinction is that deception requires a model of how the audience responds to messages while lying does not. Lies need not be deceptive. Deception does not require lying. The paper identifies situations in which lying is consistent with equilibrium and when the ability to lie is welfare enhancing. Decept...

We present a parallel implementation of a seismic inversion code. Parallelism is exploited at the loop level within the nite diierence modeling, as this is the most time consuming part of the code. We give details of our implementation, and present numerical results. We have reached a performance of 750 MMops on one processor, and over 4 GGops on 16 processors, on a Cray C90.

This study aimed to assess the performance of several algorithms based on hospital diagnoses and the long-term diseases scheme to identify multiple myeloma patients.Potential multiple myeloma patients in 2010 to 2013 were identified using the presence of hospital records with at least 1 main diagnosis code for multiple myeloma (ICD-10 "C90"). Alternative algorithms also considered related and a...

We conduct experiments testing the relationship between excess capacity and pricing in repeated Bertrand-Edgeworth duopolies and triopolies. We systematically vary the experimental markets between low excess capacity (suggesting monopoly) and no capacity constraints (suggesting perfect competition). Controlling for the number of firms, higher production capacity leads to lower prices. However, ...

Current concrete technology has made higher concrete grades more affordable to mid and high-rise buildings; hence its use has been increasing in the late years as it allows for smaller cross-sections, reduction of the structure’s weight, improve durability, among other benefits. However, it is known that brittleness of plain concrete increases with the strength; therefore, some national codes h...

Mortality data, abstracted from the World Health Organization (WHO) database, are available for various countries. We used multiple myeloma mortality (ICD-10: C88–C90) in 11 countries during the period 1990–2006. These countries were Japan, China (Hong Kong) and the Republic of Korea (Asian countries); the United States of America (USA); Australia; the Russian Federation, the United Kingdom (UK...