scholarly journals Vector Computer Memory Bank Contention

1987 ◽  
Vol C-36 (3) ◽  
pp. 293-298 ◽  
Author(s):  
Bailey
Author(s):  
Richard Mcintosh ◽  
David Mastronarde ◽  
Kent McDonald ◽  
Rubai Ding

Microtubules (MTs) are cytoplasmic polymers whose dynamics have an influence on cell shape and motility. MTs influence cell behavior both through their growth and disassembly and through the binding of enzymes to their surfaces. In either case, the positions of the MTs change over time as cells grow and develop. We are working on methods to determine where MTs are at different times during either the cell cycle or a morphogenetic event, using thin and thick sections for electron microscopy and computer graphics to model MT distributions.One approach is to track MTs through serial thin sections cut transverse to the MT axis. This work uses a video camera to digitize electron micrographs of cross sections through a MT system and create image files in computer memory. These are aligned and corrected for relative distortions by using the positions of 8 - 10 MTs on adjacent sections to define a general linear transformation that will align and warp adjacent images to an optimum fit. Two hundred MT images are then used to calculate an “average MT”, and this is cross-correlated with each micrograph in the serial set to locate points likely to correspond to MT centers. This set of points is refined through a discriminate analysis that explores each cross correlogram in the neighborhood of every point with a high correlation score.


1992 ◽  
Vol 2 (1) ◽  
pp. 3-26 ◽  
Author(s):  
Mark Lehner

From 1979 to 1983 the American Research Center in Egypt carried out an architectural, archaeological and geo-archaeological study of the Giza Sphinx. Photogrammetry and conventional surveying techniques were used to prepare detailed plans and front and side elevations of the monument. These have made it possible to construct a computer model of the current condition of the Sphinx, and its hypothesized condition in ancient times, both as originally carved in the 4th Dynasty, and as remodelled and renovated during the 18th Dynasty. Careful analysis of surviving detached fragments of the Sphinx allowed details of beard and uraeus to be included in the reconstruction. This process of creating a computer model of the Sphinx is akin to sculpting the statue again in computer memory.


2014 ◽  
Vol 493 ◽  
pp. 80-85 ◽  
Author(s):  
C.L Siow ◽  
Jaswar ◽  
Efi Afrizal

Computational Fluid Dynamics (CFD) software is often used to study fluid flow and structures motion in fluids. The CFD normally requires large size of arrays and computer memory and then caused long execution time. However, Innovation of computer hardware such as multi-cores processor provides an alternative solution to improve this programming performance. This paper discussed loop parallelize multi-cores processor for optimization of sequential looping CFD code. This loop parallelize CFD was achieved by applying multi-tasking or multi-threading code into the original CFD code which was developed by one of the authors. The CFD code was developed based on Reynolds Average Navier-Stokes (RANS) method. The new CFD code program was developed using Microsoft Visual Basic (VB) programming language. In the early stage, the whole CFD code was constructed in a sequential flow before it is modified to parallel flow by using VBs multi-threading library. In the comparison, fluid flow around the hull of round-shaped FPSO was selected to compare the performance of both the programming codes. Besides, executed results of this self-developed code such as pressure distribution around the hull were also presented in this paper.


2008 ◽  
Vol 69 (9) ◽  
pp. 1510-1516 ◽  
Author(s):  
V. V. Mazalov ◽  
M. Tamaki ◽  
S. V. Vinnichenko

Brain Injury ◽  
2001 ◽  
Vol 15 (9) ◽  
pp. 787-800
Author(s):  
Patricia Wright, Nick Rogers, Chris

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