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Personal computer

About: Personal computer is a research topic. Over the lifetime, 58809 publications have been published within this topic receiving 800814 citations. The topic is also known as: PC.


Papers
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Journal ArticleDOI
TL;DR: The coarse grain model is shown to simulate the macroscopic behavior of solid particles in three-dimensional dense gas–solid flows by using a smaller number of particles than the actual number.

196 citations

Journal ArticleDOI
TL;DR: The results are that only the LOTUS file compatibility standard is significant in explaining price variations and it issignificant in both the spreadsheet and database management system markets.
Abstract: This paper is an empirical study of the value of four file compatibility standards for transferring data in the personal computer software market. The results are that only the LOTUS file compatibility standard is significant in explaining price variations and it is significant in both the spreadsheet and database management system markets. This supports the hypothesis that the personal computer software market exhibits complementary network externalities. Copyright 1995 by MIT Press.

196 citations

Journal ArticleDOI
TL;DR: In this paper, a two-dimensional fracture network model is described, which attempts to address the problems of both reservoir creation and circulation using rock mass characterization and in situ stress data as the primary inputs with a view to encapsulating our present understanding of how such systems work.
Abstract: Hot dry rock geothermal energy extraction experiments in artificial reservoirs created by hydraulic stimulation in naturally fractured crystalline rocks have been undertaken in several countries over the last 20 years. The experiments have had mixed results in terms of fluid recovery, system impedance, and heat extraction. Numerical models have not yet delivered a generally agreed understanding of the processes and sensitivities involved in reservoir creation and circulation. In this paper a two-dimensional fracture network model is described, which attempts to address the problems of both reservoir creation and circulation using rock mass characterization and in situ stress data as the primary inputs with a view to encapsulating our present understanding of how such systems work. The model is a prototype for a three-dimensional version currently under development and is intended mainly for engineering sensitivity studies. The basis of the model lies in approximations of fracture mechanical behavior drawn from the rock mechanics literature, a very simplified analysis of the operative physical processes, and mapping of the connectivity of fracture networks to a fine resolution regular grid. Taken together, these permit the approximate resolution of what is normally a supercomputer problem on a personal computer. The model is applied to field data gathered at Fenton Hill, New Mexico; Hijiori, Yamagata Prefecture, Japan; and Rosemanowes, Cornwall, England.

196 citations

Patent
30 Jun 2004
TL;DR: In this paper, a device for and method of performing a task associated with fingerprint data is disclosed, which is part of a chain of tasks that are automatically executed when the read fingerprint data are matched to the stored fingerprint data, and at least one task has associated user profile data that is used to perform the task.
Abstract: A device for and method of performing a task associated with fingerprint data is disclosed. The method comprises reading fingerprint data, matching the read fingerprint data to stored fingerprint data, the stored fingerprint data having an associated task, and performing the task. The associated task is part of a chain of tasks that are automatically executed when the read fingerprint data is matched to the stored fingerprint data. Preferably, at least one task has associated user profile data that is used to perform the task. An electronic device that can be controlled in accordance with the present invention includes, but is not limited to, a telephone, a personal computer, a personal digital assistant, and a remote controlled device.

196 citations

Journal ArticleDOI
TL;DR: 6D spherical polar Fourier correlation expression is presented from which arbitrary multi-dimensional multi-property multi-resolution FFT correlations may be generated and it is shown that 5D correlations will be advantageous when calculating multi-term knowledge-based interaction potentials.
Abstract: Motivation: Predicting how proteins interact at the molecular level is a computationally intensive task. Many protein docking algorithms begin by using fast Fourier transform (FFT) correlation techniques to find putative rigid body docking orientations. Most such approaches use 3D Cartesian grids and are therefore limited to computing three dimensional (3D) translational correlations. However, translational FFTs can speed up the calculation in only three of the six rigid body degrees of freedom, and they cannot easily incorporate prior knowledge about a complex to focus and hence further accelerate the calculation. Furthemore, several groups have developed multi-term interaction potentials and others use multi-copy approaches to simulate protein flexibility, which both add to the computational cost of FFT-based docking algorithms. Hence there is a need to develop more powerful and more versatile FFT docking techniques. Results: This article presents a closed-form 6D spherical polar Fourier correlation expression from which arbitrary multi-dimensional multi-property multi-resolution FFT correlations may be generated. The approach is demonstrated by calculating 1D, 3D and 5D rotational correlations of 3D shape and electrostatic expansions up to polynomial order L=30 on a 2 GB personal computer. As expected, 3D correlations are found to be considerably faster than 1D correlations but, surprisingly, 5D correlations are often slower than 3D correlations. Nonetheless, we show that 5D correlations will be advantageous when calculating multi-term knowledge-based interaction potentials. When docking the 84 complexes of the Protein Docking Benchmark, blind 3D shape plus electrostatic correlations take around 30 minutes on a contemporary personal computer and find acceptable solutions within the top 20 in 16 cases. Applying a simple angular constraint to focus the calculation around the receptor binding site produces acceptable solutions within the top 20 in 28 cases. Further constraining the search to the ligand binding site gives up to 48 solutions within the top 20, with calculation times of just a few minutes per complex. Hence the approach described provides a practical and fast tool for rigid body protein-protein docking, especially when prior knowledge about one or both binding sites is available. Availability: http://www.csd.abdn.ac.uk/hex/ Contact: d.w.ritchie@abdn.ac.uk

196 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202310
202227
2021418
2020954
20191,407
20181,342