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Articles 16501 - 16530 of 16838
Full-Text Articles in Physical Sciences and Mathematics
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.
Structural Characterization Of Mixed Alkali Metal Bis(Trimethylsilyl)Amide Bases., Paul Williard, Michael Nichols
Structural Characterization Of Mixed Alkali Metal Bis(Trimethylsilyl)Amide Bases., Paul Williard, Michael Nichols
Michael A Nichols
No abstract provided.
Reconstruction And Future Trends Of The Aids Epidemic In The United States, Ron Brookmeyer
Reconstruction And Future Trends Of The Aids Epidemic In The United States, Ron Brookmeyer
Ron Brookmeyer
There has been considerable uncertainty in estimates of past and current human immunodeficiency virus (HIV) infection rates in the United States. Statistical estimates of historical infection rates can be obtained from acquired immunodeficiency syndrome (AIDS) incidence data and the incubation period. However, this approach is subject to a number of sources of uncertainty and two other approaches, epidemic models of HIV transmission and surveys of HIV prevalence, are used to corroborate and refine the statistical estimates. Analyses suggest the HIV infection rate in the United States grew rapidly in the early 1980s, peaked in the mid-1980s, and subsequently declined markedly. …
Linear Algebra By Analogy, Scott H. Hochwald
Electrochemical And Spectroscopic Investigations Of The Properties Of Electrified Interfaces, Mark Anderson
Electrochemical And Spectroscopic Investigations Of The Properties Of Electrified Interfaces, Mark Anderson
Mark R. Anderson
No abstract is available at this time.
The Influence Of Cation Size Upon The Infrared Spectrum Of Carbon Monoxide Adsorbed On Platinum Electrodes, Mark Anderson, Jimin Huang
The Influence Of Cation Size Upon The Infrared Spectrum Of Carbon Monoxide Adsorbed On Platinum Electrodes, Mark Anderson, Jimin Huang
Mark R. Anderson
The infrared spectrum of carbon monoxide adsorbed on polycrystalline platinum electrodes in the presence of acetonitrile solutions is examined. Acetonitrile solutions provide a wide double layer region (approximately 4 V) in which to investigate the observed potential dependence of the infrared peak position. The wider window allows for better comparisons of experimental data with theoretical predictions than those which are available from measurements conducted in aqueous solutions. It is found that (i) near-monolayer surface coverage can be obtained from solutions saturated with CO, (ii) the coverage stays constant over roughly the entire double layer region, (iii) the CO adsorbs to …
Spectroelectrochemical Analysis Of Spontaneously Adsorbed Monolayers, Marilyn O'Grady, Mark Anderson
Spectroelectrochemical Analysis Of Spontaneously Adsorbed Monolayers, Marilyn O'Grady, Mark Anderson
Mark R. Anderson
No abstract is currently available.
How To Pick Out The Integers In The Rationals - An Application Of Number-Theory To Logic, D. Flath, Stan Wagon
How To Pick Out The Integers In The Rationals - An Application Of Number-Theory To Logic, D. Flath, Stan Wagon
Stan Wagon, Retired
No abstract provided.
A Collaborative Summer Research Program For Community College Students, Chris Craney, Franklin Dehaan
A Collaborative Summer Research Program For Community College Students, Chris Craney, Franklin Dehaan
Chris L. Craney
While the benefits of undergraduate research are well established, little attention has been paid toward involving community college students in such research. This paper describes a five-year-experience with a summer research program that includes Los Angeles area community college students working side-by-side with Occidental College students and faculty.
Use Of A Commercially Available Flight Simulator During Aircrew Performance Testing, S. A. Shappell, B. J. Bartosh
Use Of A Commercially Available Flight Simulator During Aircrew Performance Testing, S. A. Shappell, B. J. Bartosh
Scott Shappell
The Relevance Of Fouling Models To Crossflow Microfiltration, Caroline Lubert, R. Wakeman, E. Tarleton
The Relevance Of Fouling Models To Crossflow Microfiltration, Caroline Lubert, R. Wakeman, E. Tarleton
Caroline P Lubert
No abstract provided.
Madagascar: Island Of Ghosts, Nat Quansah
Spectroelectrochemical Analysis Of Metal Surfaces Modified With Thin Organic Films, Marilyn O'Grady, Mark Anderson
Spectroelectrochemical Analysis Of Metal Surfaces Modified With Thin Organic Films, Marilyn O'Grady, Mark Anderson
Mark R. Anderson
No abstract is currently available.
The Use Of Kindergarten Screening Scores To Identify The Need For Reading Intervention: A Logit Regression Study, Jayn Crail, John Fraas
The Use Of Kindergarten Screening Scores To Identify The Need For Reading Intervention: A Logit Regression Study, Jayn Crail, John Fraas
John W. Fraas
No abstract provided.
Chelation Of 2-Substituted 1-Lithoxides: Structural And Energetic Factors Of Relevance To Synthetic Organic Chemistry., Michael Nichols, Andrew Mcphail, Edward Arnett
Chelation Of 2-Substituted 1-Lithoxides: Structural And Energetic Factors Of Relevance To Synthetic Organic Chemistry., Michael Nichols, Andrew Mcphail, Edward Arnett
Michael A Nichols
No abstract provided.
Handling Constraints In Genetic Algorithms, Cezary Janikow, Zbigniew Michalewicz
Handling Constraints In Genetic Algorithms, Cezary Janikow, Zbigniew Michalewicz
Cezary Janikow
Characterization Of Adsorption By Electrochemical And Spectroscopic Methods, Mark Anderson
Characterization Of Adsorption By Electrochemical And Spectroscopic Methods, Mark Anderson
Mark R. Anderson
No abstract is available at this time.
Interpretation Issues In Force Microscopy, Nancy Burnham, Richard Colton, Hubert Pollock
Interpretation Issues In Force Microscopy, Nancy Burnham, Richard Colton, Hubert Pollock
Nancy A. Burnham
In this paper, we will discuss force microscopy (FM) and its potential for determining mechanical properties of thin films. We will introduce the basic principles of FM, and demonstrate how FM can be used to determine materials properties as well as image surface topography, both with nanonewton or sub‐nanonewton force resolution and sub‐nanometer position resolution. As FM is still a new field, not all of the questions concerning interpretation have been fully answered. We will elucidate four current issues that must be resolved before the full potential of FM can be realized. They are: (1) the role of water vapor …
Setting Time Effects On Bentonite Water-Well Annulus Seals, Fred L. Ogden
Setting Time Effects On Bentonite Water-Well Annulus Seals, Fred L. Ogden
Fred L. Ogden
Shear strength tests are conducted in a model of a water well on four, commercially available, granular bentonite well sealing products. The time dependency of annulus seal shear strength and resistance to piping is examined. Dry bentonite samples are placed through water in the annular space between the casing and borehole and allowed to set for a specified time. Pressure is applied at a constant rate to one end of the clay seal until shear or piping failure occurs. Pressure and seal displacement data are recorded on a digital data acquisition system. Annulus seal strength and resistance to piping increase …
The Influence Of Cation Size Upon The Infrared Spectrum Of Carbon Monoxide Adsorbed On Platinum Electrodes, Mark Anderson, Jimin Huang
The Influence Of Cation Size Upon The Infrared Spectrum Of Carbon Monoxide Adsorbed On Platinum Electrodes, Mark Anderson, Jimin Huang
Mark R. Anderson
No abstract is currently available.
The Influence Of Cation Size Upon The Infrared Spectrum Of Carbon Monoxide Adsorbed On Platinum Electrodes, Mark Anderson, Jimin Huang
The Influence Of Cation Size Upon The Infrared Spectrum Of Carbon Monoxide Adsorbed On Platinum Electrodes, Mark Anderson, Jimin Huang
Mark R. Anderson
No abstract is currently available.
Observability Of The Anapole Moment And Neutrino Charge Radius, Mj Musolf, Br Holstein
Observability Of The Anapole Moment And Neutrino Charge Radius, Mj Musolf, Br Holstein
Barry R Holstein
The properties of the neutrino charge radius (NCR) and anapole moments (AM's) of elementary fermions, nucleons, and nuclei are discussed. The dependence of these off-shell electromagnetic couplings on the weak gauge parameter is explicitly demonstrated by a calculation performed in the Rξ gauge. The gauge dependence of the AM's and NCR implies that they cannot be observed in isolation from other second-order, electroweak effects. It is shown, however, that the AM's of various hadronic systems having an SU(2)L quantum number TL3=0 can be considered ``observables'' in certain formal, though unphysical, limits. It is argued that, apart from these special limits, …
Thermochronology And Thermobarometry In Lithotectonic Zones In Eastern New England, Andrea Koziol, Robert Wintsch
Thermochronology And Thermobarometry In Lithotectonic Zones In Eastern New England, Andrea Koziol, Robert Wintsch
Andrea M. Koziol
Sniftirs Study Of The Behavior Of The Spectrum Of Carbon Monoxide Adsorbed On A Platinum Electrode In Alcoholic Solvents, Andrea Russell, Daniel Blackwood, Mark Anderson, Stanley Pons
Sniftirs Study Of The Behavior Of The Spectrum Of Carbon Monoxide Adsorbed On A Platinum Electrode In Alcoholic Solvents, Andrea Russell, Daniel Blackwood, Mark Anderson, Stanley Pons
Mark R. Anderson
The vibrational spectrum of carbon monoxide as a function of coverage in various alcoholic solvents was investigated using the SNIFTIRS technique. At low coverage the potential dependence of the band position was found to be linearly dependent on the inverse of the bulk dielectric constant of the solvent. An electrostatic model was developed to represent the interaction between adjacent adsorbate molecules. This model provides evidence in support of an island formation mechanism.
Experimental Studies Of Fe-Mg Carbonates As Indicators Of Martian Near-Surface Conditions, Andrea Koziol
Experimental Studies Of Fe-Mg Carbonates As Indicators Of Martian Near-Surface Conditions, Andrea Koziol
Andrea M. Koziol
The (First) Three B’S Of The Skyrme Model, Alec Schramm
The (First) Three B’S Of The Skyrme Model, Alec Schramm
Alec J Schramm
No abstract provided.
Higgs Boson Production In Peripheral Heavy-Ion Collisions: Coherent Double-Pomeron Exchange, Alec Schramm, Berndt Muller
Higgs Boson Production In Peripheral Heavy-Ion Collisions: Coherent Double-Pomeron Exchange, Alec Schramm, Berndt Muller
Alec J Schramm
Higgs boson production by coherent double-pomeron exchange in peripheral nuclear collisions at energies of several TeV per nucleon is calculated. It is shown that a trigger on quasi-elastic nuclear collisions strongly suppresses the cross section. The analogous two-photon process is predicted to dominate for collisions of heavy nuclei.
Digital-Image-Based Study Of Circular Holes In An Elastic Matrix, Anthony Day, K. Snyder, E. Garboczi, M. Thorpe
Digital-Image-Based Study Of Circular Holes In An Elastic Matrix, Anthony Day, K. Snyder, E. Garboczi, M. Thorpe
Anthony Roy Day
No abstract provided.