Synchronous running of shaded-pole permanent magnet motors (2008)
A mathematical model for the rotary motion of a shaded-pole permanent magnet motor is established and significant non-dimensional combinations of the electrical and mechanical parameters of the motor...
Changes in Atmospheric Constituents and in Radiative Forcing (2007)
Forster, Piers, Ramaswamy, Venkatachalam, Artaxo, Paulo, Berntsen, Terje, Betts, Richard, Fahey, David W., ...
Lamarque,J. F., Kiehl,J. T., Brasseur,G. P., Butler,T., Cameron-Smith,P., Collins,W. D., ...
In this study, we present the results of nitrogen deposition on land from a set of 29 simulations from six different tropospheric chemistry models pertaining to present-day and 2100 conditions....
Amplification of surface temperature trends and variability in the tropical atmosphere (2005)
Santer, B.D., Wigley, T.M.L., Mears, C., Wentz, F.J., Klein, S.A., Seidel, D.J., ...
Lamarque, J. F., Kiehl, J. T., Brasseur, G. P., Butler, T., Cameron-Smith, P., Collins, W. D., ...
In this study, we present the results of nitrogen deposition on land from a set of 29 simulations from six different tropospheric chemistry models pertaining to present-day and 2100 conditions....
T. Zhang, C. Covey, S. A. Klein, W. D. Collins, J. J. Hack, ...
The equatorial Pacific is a region with strong negative feedbacks. Yet coupled general circulation models (GCMs) have exhibited a propensity to develop a significant SST bias in that region,...
Synchronous running of voltage-fed miniature single-stator permanent magnet motors (2005)
A mathematical model is established for a single-stator permanent magnet synchronous motor when voltage-fed. Non-dimensional parameters governing the behaviour of the rotor are identified and...
Synchronous running of voltage-fed miniature single-stator permanent magnet motors (2005)
A mathematical model is established for a single-stator permanent magnet synchronous motor when voltage-fed. Non-dimensional parameters governing the behaviour of the rotor are identified and...
Diner,D. J., Ackerman,T. P., Anderson,T. L., Bösenberg,Jens, Braverman,A. J., Charlson,R. J., ...
Aerosols exert myriad influences on the earth's environment and climate, and on human health. The complexity of aerosol-related processes requires that information gathered to improve our...
Diner,D. J., Menzies,R. T., Kahn,R. A., Anderson,T. L., Bösenberg,Jens, Charlson,R. J., ...
A comprehensive and cohesive aerosol measurement record with consistent, well-understood uncertainties is a prerequisite to understanding aerosol impacts on long-term climate and environmental...
Diner, D. J., Ackerman, T. P., Anderson, T. L., Bösenberg, Jens, Braverman, A. J., Charlson, R. J., ...
Aerosols exert myriad influences on the earth's environment and climate, and on human health. The complexity of aerosol-related processes requires that information gathered to improve our...
Diner, D. J., Menzies, R. T., Kahn, R. A., Anderson, T. L., Bösenberg, Jens, Charlson, R. J., ...
A comprehensive and cohesive aerosol measurement record with consistent, well-understood uncertainties is a prerequisite to understanding aerosol impacts on long-term climate and environmental...
Long, S. A. T., Gray, S. L., Collins, W. D.
The effects of electron radiation on Ultem, a polyetherimide manufactured by General Electric Company, were studied for total absorbed doses from 1.0 kGy to 100 MGy at absorbed dose rates from 0.01...
USING BERNSTEIN POLYNOMIALS TO RECOVER ENGINEERING LOADS FROM STRAIN GAUGE DATA (1994)
COLLINS, W. D., QUEGAN, S., SMITH, D., TAYLOR, D. A. W.
An improved new method for the determination of interface pressures in contact zones between hard and soft components is described. The method uses Bernstein polynomials to represent the form of the...
Nonlinear Optimal Control Problems and the Method of Multiple Scales (1989)
The method of multiple scales is used to obtain an approximate solution to the problem of the optimal control of a second-order differential equation containing a small nonlinearity. Applications are...
The Numerical Solution of the Linear Regulator Problem with Positive Control (1988)
SISSAOUI, H., COLLINS, W. D., HARLEY, P. J.
The standard linear regulator problem with positive control is solved using a minimum principle, a maximum principle, and the hypersphere inequality method. Comparisons are made between the numerical...
POINTWISE BOUNDS FOR THE SOLUTION OF UNILATERAL CONSTRAINT PROBLEMS (1987)
COLLINS, W. D., HARLEY, P. J., SISSAOUI, H.
Upper and lower bounds to the solution at an interior point of a unilateral constraint problem for Laplace's equation in two dimensions are obtained and applied to the problem of a circular elastic...
The controllability and reachability of multipass systems governed by linear ordinary differential equations are considered and some results given on canonical forms for such systems. These results...
FORCED OSCILLATIONS OF SYSTEMS GOVERNED BY ONE-DIMENSIONAL NON-LINEAR WAVE EQUATIONS (1971)
Solutions of linear wave equations for forced oscillations in a finite region become infinite or large at and near resonant frequencies. For certain one-dimensional forced oscillation problems for...
The propagation of non-linear waves in an incompressible isotropic elastic half-space, initially at rest and in a state of homogeneous shear strain, is investigated when continuously varying shear...
ONE-DIMENSIONAL NON-LINEAR WAVE PROPAGATION IN INCOMPRESSIBLE ELASTIC MATERIALS (1966)
We formulate the equations governing one-dimensional non-linear wave propagation in an incompressible heat-conducting elastic material which is transversely isotropic or isotropic in its undeformed...
The wave functions in some axisymmetric scalar diffraction problems involving one or more circular disks are obtained as contour integrals to show that the solutions of these problems depend on the...
Various boundary value problems for a spherical cap in electrostatics and in the theories of the potential flow of a perfect fluid and the Stokes flow of a viscous fluid are considered.