With the rapid technological advances in high-performance computing, access to parallel computing resources is becoming more prevalent in the scientific community. Scientific computation has been proven to be an invaluable tool for tackling challenges faced by science, but writing massivelyparallel software for scientific applications remains difficult and requires years of training and practic...

What factors affect client perception of vendor preference in a crowdsourcing marketplace? We approach this question from two theoretical perspectives in this study. First, extending the knowledge of e-commerce transaction, we propose the concept of vendor-task fit in this study and test its relationship to vendor preference. Second, we posit that swift trust also influences client decisions. O...

We show that Gamma Ray Bursts (GRBs) of known redshift and rest frame optical extinction detected by the Swift satellite fully confirm earlier results concerning the distribution of the optical afterglow luminosity at 12 hours after trigger (rest frame time). This distribution is bimodal and relatively narrow, especially for the high luminosity branch. This is intriguing, given that Swift GRBs ...

The Swift-Hohenberg equation is a central nonlinear model in modern physics. Originally derived to describe the onset and evolution of roll patterns in Rayleigh-Bénard convection, it has also been applied to study a variety of complex fluids and biological materials, including neural tissues. The Swift-Hohenberg equation may be derived from a Lyapunov functional using a variational argument. He...

A good fraction of GRBs detected by Swift are at a large redshift (up to z = 6.3, so far). Their study allows us to investigate, among other things, the cosmic star formation in the early Universe (possibly up to the re-ionization era) and the chemical enrichment of the high-redshift gas. Here we present and discuss a method of selection which identifies high-redshift candidates based only upon...

Mathematical models have become an important tool for understanding the control of eye movements during reading. Main goals of the development of the SWIFT model (R. Engbert, A. Longtin, & R. Kliegl, 2002) were to investigate the possibility of spatially distributed processing and to implement a general mechanism for all types of eye movements observed in reading experiments. The authors presen...

In this paper, we describe the implementation of a database design environment (Swift) that incorporates several novel features: Swift’s data modelling approach is derived from viewpoint-oriented methods; Swift is implemented in Java, which allows us to easily construct a client/server based environment; the repository is implemented using PostgreSQL, which allows us to store the actual applica...

In the set of 236 GRB afterglows observed by Swift between January 2005 and March 2007, we identify 30 X-ray light-curves whose power-law fall-off exhibit a steepening (”break”) at 0.1–10 day after trigger, to a decay steeper than t−1.5. For most of these afterglows, the X-ray spectral slope and the decay indices before and after the break can be accommodated by the standard jet model although ...

Primate visual systems process natural images in a hierarchical manner: at the early stage, neurons are tuned to local image features, while neurons in high-level areas are tuned to abstract object categories. Standard models of visual processing assume that the transition of tuning from image features to object categories emerges gradually along the visual hierarchy. Direct tests of such model...

The Swift Gamma-Ray Burst Explorer is a uniquely capable mission, with three on-board instruments and rapid slewing capabilities. It serves as a fast-response satellite observatory for everything from gravitational-wave counterpart searches to cometary science. Swift averages 125 different observations per day, and is consistently over-subscribed, responding to about one-hundred Target of Oport...