this paper presents a k- turbulence model for simulation of steady current and itsinduced vortex shedding caused by the presence of an offshore pipeline. performance of the modelaround a circular cylinder above a wall with gap to diameter ratios of 0.1, 0.35 and 0.5 underdifferent flow regimes with reynolds numbers of 1500, 2500 and 7000 is studied. the flow field iscomputed with solving the re...

_.a conventional prime factor discrete Fourier transform (DFT) algorithm is used to realize a discrete Fourier-like transform on the finite fieM, GF(qg ). A pipeline structure is used to implement this prime factor DFT over GF(qn). This algorithm is developed to compute cyclic convolutions of complex numbers and to decode ReedSolomon codes. Such a pipeline fast prime factor DFT algorithm over G...

The notable expansion of peptide therapeutics development in the late 1990s and the 2000s led to an unprecedented number of marketing approvals in 2012 and has provided a robust pipeline that should deliver numerous approvals during the remainder of the 2010s. To document the current status of the pipeline, we collected data for peptide therapeutics in clinical studies and regulatory review, as...

Higher-order clustering statistics, like the galaxy bispectrum, can add complementary cosmological information to what is accessible with two-point power spectrum. While standard way of measuring bispectrum involves estimating a value in large number Fourier triangle bins, compressed modal approximates as linear combination basis functions and estimates expansion coefficients on chosen basis. I...

In this paper, we present a fast and eficient compilation methodology for pipeline reconfigurable architectures. Our compiler back-end is much faster than conventional CAD tools, and fairly eficient. W e represent pipeline reconfigurable architectures by a generalized VLI W-like model. The complex architectural constraints are effectively expressed in terms of a single graph parameter: the rout...

In this paper we show that an arbitrary tree structured QBD Markov chain can be embedded in a tree-like QBD process with a special structure. Moreover, we present an algebraic proof that applying the natural fixed point iteration (FPI) to the nonlinear matrix equation V = B + ∑d s=1 Us(I − V )Ds that solves the tree-like QBD process, is equivalent to the more complicated iterative algorithm pre...

Over the past two decades, helioseismology has revolutionized our understanding of the interior structure and dynamics of the Sun. Asteroseismology will soon place this knowledge into a broader context by providing structural data for hundreds of Sun-like stars. Solar-like oscillations have already been detected from the ground in several stars, and NASA’s Kepler mission is poised to unleash a ...

This paper describes a distributed UML virtual machine, called Matilda, which allows developers to design their applications as UML models and directly execute the models. Matilda accepts the UML models that developers define (class and sequence diagrams), validates them against the UML metamodel, constructs a Java abstract syntax tree (JAST) that corresponds to the user-defined models, and exe...

Hybrid evolution and horizontal gene transfer (HGT) are processes where evolutionary relationships may more accurately be described by a reticulated network than by a tree. In such a network, there will often be several paths between any two extant species, reflecting the possible pathways that genetic material may have been passed down from a common ancestor to these species. These paths will ...