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Using the Run-Time Sizes of Data Structures to Guide Parallel Thread Creation
Run-Time Sizes Data Structures Guide Parallel Thread Creation
2016/5/24
Dynamic granularity estimation is a new technique for automatically identifying expressions in functional languages for parallel evaluation. Expressions with little computation relative to thread-crea...
Sizing the Horizon: The Effects of Chart Size and Layering on the Graphical Perception of Time Series Visualizations
Visualization graphical perception time series line charts, horizon graphs
2016/5/24
We investigate techniques for visualizing time series data
and evaluate their effect in value comparison tasks. We
compare line charts with horizon graphs—a space-efficient
time series visualizatio...
Community Epidemic Detection using Time-Correlated Anomalies
epidemic detection anomalies community
2016/5/24
An epidemic is malicious code running on a subset of a community,a homogeneous set of instances of an application. Syzygy is an epidemic detection framework that looks for time-correlated anomalies,i....
Linear Time Approximation Schemes for Geometric Maximum Coverage
Maximum coverage Geometric set cover Polynomial-time approximation scheme
2016/1/22
We study approximation algorithms for the following geo-metric version of the maximum coverage problem: Let P be a set of n weighted points in the plane. We want to place m a × b rectangles such that ...
An Assessment of Dual-Time Stepping, Time Spectral and Artificial Compressibility based Numerical Algorithms for Unsteady Flow with Applications to Flapping Wings
Assessment Dual-Time Stepping Time Spectral Compressibility based Numerical Algorithms Unsteady Flow Flapping Wings
2015/7/3
The objective of this study is to compare and contrast three numerical algorithms that can be used to estimate the forces and pressure distribution on wings in flapping motion. All algorithms ar...
Time Spectral Method for Rotorcraft Flow with Vorticity Confinement
Time Spectral Method Rotorcraft Flow Vorticity Confi nement
2015/7/2
This paper follows up on the authors’ recent paper.1It is shown here that it is possible to obtain reasonable improvement in the results utilizing Vorticity Confinement method. The previous pape...
Monotonicity preserving multigrid time stepping schemes for conservation laws
Monotonicity preserving multigrid stepping schemes conservation laws
2015/7/2
In this paper, we propose monotonicity preserving and total variation diminishing (TVD) mul tigrid methods for solving scalar conservation laws. We generalize the upwind-biased residual restriction an...
Two-dimensional implicit time-dependent calculations on adaptive unstructured meshes with time evolving boundaries
Two-dimensional implicit time-dependent calculations adaptive unstructured meshes evolving boundaries
2015/7/2
An implicit multigrid-driven algorithm for two-dimensional incompressible laminar viscous ows has been coupled with a solution adaptation method and a mesh movement method for boundary movement.Time-...
Time Spectral Method for Periodic Unsteady Computations over Two- and Three- Dimensional Bodies
Time Spectral Method Periodic Unsteady Computations Dimensional Bodies
2015/7/2
The Time Spectral Algorithm is proposed for the fast and efficient computation of time periodic turbulent Navier-Stokes calculations past two- and three-dimensional bodies.
TWO-DIMENSIONAL IMPLICIT TIME DEPENDENT CALCULATIONS FOR INCOMPRESSIBLE FLOWS ON ADAPTIVE UNSTRUCTURED MESHES
TWO-DIMENSIONAL IMPLICIT DEPENDENT CALCULATIONS INCOMPRESSIBLE FLOWS ADAPTIVE UNSTRUCTURED MESHES
2015/7/2
An implicit muItigrid-driven algorithm for two-dimensional incompres ible laminar viscous flows is coupled with a mesh adaptation method to better capture the important features of the flow for time d...
Three-Dimensional Computations of Time-Dependent Incompressible Flows with an Implicit Multigrid-Driven Algorithm on Parallel Computers
Three-Dimensional Computations Time-Dependent Incompressible Flows Implicit Multigrid-Driven Algorithm Parallel Computers
2015/7/1
The present work is aimed at the development of a robust, computationally efficient algorithm for the simulation of unsteady incompressible flows of interest in engineering. In particular, we focus on...
Query-Time Optimization Techniques for Structured Queries in Information Retrieval
algorithms information retrieval optimization search
2014/12/18
The use of information retrieval (IR) systems is evolving towards larger, more complicated queries. Both the IR industrial and research communities have generated significant evidence indicating that ...
Scheduling Heuristics for Maximizing the Output Quality of IRIS Task Graphs in Multiprocessor Environment with Time and Energy Bounds
precedence constraints computational load cost functions reward service dynamic voltage scaling
2014/12/8
Embedded real time applications are often subject to time and energy constraints. Real time applications are usually characterized by logically separable set of tasks with precedence constraints. The ...
A Piecewise Aggregate Approximation Lower-Bound Estimate for Posteriorgram-based Dynamic Time Warping
dynamic time warping lower-bound posteriorgram
2014/11/27
In this paper, we propose a novel lower-bound estimate for dynamic time warping (DTW) methods that use an inner product distance on multi-dimensional posterior probability vectors known as posteriorgr...
Improving the Security and Flexibility of One-Time Passwords by Signature Chains
authentication hash chain signature chain
2009/7/28
While the classical attack of ``monitor the network and intercept the password'' can be avoided by advanced protocols like SSH, one-time passwords are still considered a viable alternative or a supple...