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Articles 1 - 13 of 13
Full-Text Articles in Physical Sciences and Mathematics
The Elastic Moduli Of Simple Two-Dimensional Isotropic Composites: Computer Simulation And Effective Medium Theory, K. A. Snyder, E. J. Garboczi, Anthony Roy Day
The Elastic Moduli Of Simple Two-Dimensional Isotropic Composites: Computer Simulation And Effective Medium Theory, K. A. Snyder, E. J. Garboczi, Anthony Roy Day
Anthony Roy Day
An algorithm, combining digital-image with spring network techniques, has been developed that enables computation of the elastic moduli of random two-dimensional multiphase composites. This algorithm is used to study the case of isotropic, randomly centered, overlapping circular inclusions in an isotropic elastic matrix. The results of the algorithm for the few-inclusion limit, as well as the case where both phases have the same shear moduli, agree well with the exact results for these two problems. The case where the two phases have the same Poisson’s ratio, but different Young’s moduli, is also studied, and it is shown that the effective …
Can The Kindergarten Diagnostic Instrument Be Used To Identify Children Who Will Qualify For A Reading Intervention Program?, John Fraas, Cynthia Frick
Can The Kindergarten Diagnostic Instrument Be Used To Identify Children Who Will Qualify For A Reading Intervention Program?, John Fraas, Cynthia Frick
John W. Fraas
No abstract provided.
A Binomial Test Of Model Fit, John Fraas, Isadore Newman
A Binomial Test Of Model Fit, John Fraas, Isadore Newman
John W. Fraas
No abstract provided.
A Capacity Theory Of Comprehension: Individual Differences In Working Memory, Marcel Just, Patricia Carpenter
A Capacity Theory Of Comprehension: Individual Differences In Working Memory, Marcel Just, Patricia Carpenter
Marcel Adam Just
No abstract provided.
Adaptive Estimation In Timeseries Regression Models, Douglas Steigerwald
Adaptive Estimation In Timeseries Regression Models, Douglas Steigerwald
Douglas G. Steigerwald
I develop adaptive estimators for linear regression with serially correlated errors. The efficiency results hold even when the serial correlation structure is unknown. Simulations indicate that efficiency gains can be substantial with samples of only 50 observations. We apply the method to a study of forward exchange rates.
On The Finite Sample Behavior Of Adaptive Estimators, Douglas Steigerwald
On The Finite Sample Behavior Of Adaptive Estimators, Douglas Steigerwald
Douglas G. Steigerwald
With only 50 observations, the adaptive estimator produces confidence intervals that are 20 to 50 percent shorter than those produced by GLS procedures. The key feature is that the underlying error density is symmetric. Under asymmetry the interval length is shortened by a smaller amount.
Global Solutions Of Nonlinear Differential Equations, William F. Trench
Global Solutions Of Nonlinear Differential Equations, William F. Trench
William F. Trench
No abstract provided.
A Course In Econometrics: A Review, Douglas G. Steigerwald
A Course In Econometrics: A Review, Douglas G. Steigerwald
Douglas G. Steigerwald
No abstract provided.
A Class Of Direct Search Methods For Nonlinear Integer Programming, Stephen J. Sugden
A Class Of Direct Search Methods For Nonlinear Integer Programming, Stephen J. Sugden
Stephen Sugden
This work extends recent research in the development of a number of direct search methods in nonlinear integer programming. The various algorithms use an extension of the well-known FORTRAN MINOS code of Murtagh and Saunders as a starting point. MINOS is capable of solving quite large problems in which the objective function is nonlinear and the constraints linear. The original MINOS code has been extended in various ways by Murtagh, Saunders and co-workers since the original 1978 landmark paper. Extensions have dealt with methods to handle both nonlinear constraints, most notably MINOS/AUGMENTED and integer requirements on a subset of the …
Optical Transformations In Three-Space: Simulations With A Pc, Raymond G. Wilson, Sean M. Mccreary, Jeffrey L. Thompson
Optical Transformations In Three-Space: Simulations With A Pc, Raymond G. Wilson, Sean M. Mccreary, Jeffrey L. Thompson
Raymond Wilson
Nuclear Emp Hardening Approach As The Basis For Unified Electromagnetic Environmental Effects Protection, George H. Baker Iii
Nuclear Emp Hardening Approach As The Basis For Unified Electromagnetic Environmental Effects Protection, George H. Baker Iii
George H Baker
Operation DESERT STORM demonstrated the clear military advantage that was provided by our sophisticated electronic C4I and weapons systems. High tech means so dominate the battlefield that the outcome of future conflicts could be decided by electronics attrition rather than human casualties. However, the electromagnetic threat landscape is highly complex. The already formidable list of environments (EMI, lighting, ESD, EMP, HERO, TEMPEST, EW, etc.) is lengthened by emerging threats from high power microwave (HPM) and ultra-wide band (UWB) electromagnetic weapons. Many of these environments overlap in the frequency and amplitude of the electrical stresses they create.
The large number of …
Sliding-Mode Observers Based On Equivalent Control Method, Sergey V. Drakunov
Sliding-Mode Observers Based On Equivalent Control Method, Sergey V. Drakunov
Sergey V. Drakunov
No abstract provided.
Multi-Ball Collisions, Terry L. Smith, Jay S. Huebner
Multi-Ball Collisions, Terry L. Smith, Jay S. Huebner
Jay S Huebner
Explanation to use the "double-ball" demonstration as a model for the supernova core bounce.