Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Selected Works

Discipline
Keyword
Publication Year
Publication
File Type

Articles 16711 - 16740 of 16838

Full-Text Articles in Physical Sciences and Mathematics

A Prescription For Computer System Excellence, Robert Yacobellis Dec 1985

A Prescription For Computer System Excellence, Robert Yacobellis

Robert H Yacobellis

No abstract provided.


Engineering Product Quality - Current Practices And Future Trends, Robert Yacobellis Dec 1985

Engineering Product Quality - Current Practices And Future Trends, Robert Yacobellis

Robert H Yacobellis

No abstract provided.


The Rigid Backbone: A New Geometry For Percolation., Anthony Day, R. Tremblay, A.-M. Tremblay Dec 1985

The Rigid Backbone: A New Geometry For Percolation., Anthony Day, R. Tremblay, A.-M. Tremblay

Anthony Roy Day

It is shown that the diluted two-dimensional central-force problem belongs to a new class of percolation problems. Geometric properties such as the fractal dimension of the backbone, the correlation-length exponent, and the connectivity are completely different from those of previously studied percolation problems. Explicit calculations of the backbone and the construction of an algorithm which identifies the infinite rigid cluster clearly demonstrate the absence of singly connected bonds, the overwhelming importance of loops, and the long-range nature of the rigidity.


A Highly Enantioselective Hydrolysis Of -3,5-Diacetoxycyclopent-1-Ene, Donald Deardorff, A. Matthews, D. Mcmeekin, Chris Craney Dec 1985

A Highly Enantioselective Hydrolysis Of -3,5-Diacetoxycyclopent-1-Ene, Donald Deardorff, A. Matthews, D. Mcmeekin, Chris Craney

Chris L. Craney

Exposure of -3,5-diacetoxycyclopent-1-ene () to the hydrolase enzyme acetylcholinesterase (from electric eel) affords In 94% yield 3()-acetoxy-5()-hydroxycyclopent-1-ene () with an e.e. of 96% (greater than 99% e.e. after one recrystallization).


Positive Experiences With Software Metrics, Robert Yacobellis Dec 1985

Positive Experiences With Software Metrics, Robert Yacobellis

Robert H Yacobellis

No abstract provided.


Nuclease Activity Of 1,10-Phenanthroline-Copper Ion: Reaction With Cgcgaattcgcg And Its Complexes With Netropsin And Ecori, Thomas Goyne, Michio Kuwabara, Chun Yoon, Theodore Thederahn, David Sigman Dec 1985

Nuclease Activity Of 1,10-Phenanthroline-Copper Ion: Reaction With Cgcgaattcgcg And Its Complexes With Netropsin And Ecori, Thomas Goyne, Michio Kuwabara, Chun Yoon, Theodore Thederahn, David Sigman

Thomas Goyne

No abstract provided.


Electromagnetic And Isopin Breaking Effects Decrease Epsilon'/Epsilon, Jf Donoghue, E Golowich, Br Holstein, J Trampetic Dec 1985

Electromagnetic And Isopin Breaking Effects Decrease Epsilon'/Epsilon, Jf Donoghue, E Golowich, Br Holstein, J Trampetic

Barry R Holstein

No abstract provided.


Chiral Perturbation-Theory Corrections To Kl-]-Gamma-Gamma, Jf Donoghue, Br Holstein, Ycr Lin Dec 1985

Chiral Perturbation-Theory Corrections To Kl-]-Gamma-Gamma, Jf Donoghue, Br Holstein, Ycr Lin

Barry R Holstein

No abstract provided.


A Design Methodology For Software Quality, Robert Yacobellis Dec 1985

A Design Methodology For Software Quality, Robert Yacobellis

Robert H Yacobellis

No abstract provided.


Solution Of Systems With Toeplitz Matrices Generated By Rational Functions, William F. Trench Dec 1985

Solution Of Systems With Toeplitz Matrices Generated By Rational Functions, William F. Trench

William F. Trench

No abstract provided.


Extensions Of A Theorem Of Wintner On Systems With Asymptotically Constant Solutions, William F. Trench Dec 1985

Extensions Of A Theorem Of Wintner On Systems With Asymptotically Constant Solutions, William F. Trench

William F. Trench

No abstract provided.


Splay Rigidity In The Diluted Central Force Elastic Network, Anthony Roy Day, A.-M. S. Tremblay, R. R. Tremblay Dec 1985

Splay Rigidity In The Diluted Central Force Elastic Network, Anthony Roy Day, A.-M. S. Tremblay, R. R. Tremblay

Anthony Roy Day

A Comment on the Letter by Wang and Harris, Phys. Rev. Lett. 55, 2459 (1985).


On The Eigenvalue Problem For A Class Of Band Matrices Including Those With Toeplitz Inverses, William F. Trench Dec 1985

On The Eigenvalue Problem For A Class Of Band Matrices Including Those With Toeplitz Inverses, William F. Trench

William F. Trench

No abstract provided.


Toward A Theory Of Strict "Claim" Liability: Warranty Relief For Advertising Representations, Wayne Lewis Dec 1985

Toward A Theory Of Strict "Claim" Liability: Warranty Relief For Advertising Representations, Wayne Lewis

Wayne Lewis

No abstract provided.


Quantum Electrodynamics At Finite Temperature, Jf Donoghue, Br Holstein, Rw Robinett Oct 1985

Quantum Electrodynamics At Finite Temperature, Jf Donoghue, Br Holstein, Rw Robinett

Barry R Holstein

We present a systematic examination of finite temperature effects in quantum electrodynamics at one loop order. We calculate mass, charge, and wavefunction renormalization, demonstrate the running of the coupling constant at high temperatures, and study the renormalized vertex function and the energy momentum tensor. The confusion in the literature concerning the finite temperature corrections to the electron's magnetic moment is resolved. We also present the finite temperature effects in scalar electrodynamics. Throughout we stress the need to provide a well-defined method to observe a given quantity when interpreting the results of a calculation, and we suggest new techniques which incorporate …


Spectral Properties Of Percolating Central Force Elastic Networks, Anthony Day, R. Tremblay, A.-M. Tremblay Sep 1985

Spectral Properties Of Percolating Central Force Elastic Networks, Anthony Day, R. Tremblay, A.-M. Tremblay

Anthony Roy Day

The exponent describing the low frequency spectrum of vibrations for the central force universality class is computed with both the Coherent Potential Approximation and numerical simulations. The results of both calculations agree surprisingly well.


Reanalysis Of Higgs-Boson-Exchange Models Of Cp Violation, Jf Donoghue, Br Holstein Aug 1985

Reanalysis Of Higgs-Boson-Exchange Models Of Cp Violation, Jf Donoghue, Br Holstein

Barry R Holstein

We reexamine the value of ɛ'/ɛ in models where CP violation is due to the exchange of charged Higgs bosons. Previous work has been flawed by incorrect treatment of the chiral properties of weak amplitudes. We use the effective-chiral-Lagrangian framework to clear up these aspects. The resultant value of ɛ'/ɛ is estimated to be in the neighborhood of ɛ'/ɛ=-0.006, although this estimate could be off by a factor of two or three in either direction. This value is consistent with the present experimental bounds.


Evaluation Of Electrochemical Kinetic Parameters Using The Bond-Henderson-Oldham Global Analysis, Dennis Evans, Mark Anderson Aug 1985

Evaluation Of Electrochemical Kinetic Parameters Using The Bond-Henderson-Oldham Global Analysis, Dennis Evans, Mark Anderson

Mark R. Anderson

No abstract is currently available.


Predictors Of Grades In General Chemistry For Allied Health Students, Chris Craney, R. Armstrong Jan 1985

Predictors Of Grades In General Chemistry For Allied Health Students, Chris Craney, R. Armstrong

Chris L. Craney

Study searching for an effective predictor of student performance in the first term of a full-year general chemistry sequence for allied health students.


Electrochemical Reduction Of 1,1,4,4-Tetraphenylbutatriene In Dimethylformamid, Dennis Peters, Mark Anderson, Tsu-Yu Chen Jan 1985

Electrochemical Reduction Of 1,1,4,4-Tetraphenylbutatriene In Dimethylformamid, Dennis Peters, Mark Anderson, Tsu-Yu Chen

Mark R. Anderson

No abstract is currently available.


Gravitational Twins Revisited, Br Holstein Dec 1984

Gravitational Twins Revisited, Br Holstein

Barry R Holstein

No abstract provided.


Possible Weak Interaction Experiments With Polarized He-3, Br Holstein Dec 1984

Possible Weak Interaction Experiments With Polarized He-3, Br Holstein

Barry R Holstein

No abstract provided.


Uncertainty And Policy Agressiveness, Douglas Steigerwald, Roger Craine Dec 1984

Uncertainty And Policy Agressiveness, Douglas Steigerwald, Roger Craine

Douglas G. Steigerwald

How should a decision maker proceed with uncertain knowledge of the decision outcome? We use the unknown coefficient control problem to shed light on the issue.


Forced Harmonic-Oscillator - A Path Integral Approach, Br Holstein Dec 1984

Forced Harmonic-Oscillator - A Path Integral Approach, Br Holstein

Barry R Holstein

The problem of the harmonic oscillator driven by an external force is explored using path integral techniques. The qualitative features of the solution are demonstrated.


Evaluation Of Electrochemical Kinetic Parameters Using The Bond-Henderson-Oldham Global Analysis, Dennis Evans, Mark Anderson Dec 1984

Evaluation Of Electrochemical Kinetic Parameters Using The Bond-Henderson-Oldham Global Analysis, Dennis Evans, Mark Anderson

Mark R. Anderson

No abstract is currently available.


Semileptonic Hyperon Decay - A Problem For Chiral Perturbation-Theory, Jf Donoghue, Br Holstein Dec 1984

Semileptonic Hyperon Decay - A Problem For Chiral Perturbation-Theory, Jf Donoghue, Br Holstein

Barry R Holstein

We study the recently computed mk2lnm2k corrections to hyperton beta decay found in chiral perturbation theory. The inclusion of these effects is not compatible with the high precision hyperon data, yielding a fit much inferior to the standard assumption of SU(3) invariance. This incompatibility of data and theory is a problem for the application of chiral perturbation theory.


Viscosity Measurements In Dilute Helium-3-Helium-4 Mixtures, George Schmiedeshoff Dec 1984

Viscosity Measurements In Dilute Helium-3-Helium-4 Mixtures, George Schmiedeshoff

George Schmiedeshoff

We have measured the viscosity of a dilute mixture of 3He in 4He at temperatures from 5 to 100 mK and in magnetic fields of 0.35, 2.01 and 8.76 T using a vibrating wire viscometer. Subject to our choice of calibration function, the data at 0.35 T is in good agreement with theory. Due to an interaction of our viscometer with the magnetic field the motion of the wire at 2.01 and 8.76 T is not understood; however, the 2.01 T data can be brought into agreement with the 0.35 T data by adjusting a geometrical constant. An increase in …


Quantitative Evaluation Of Enhancement Techniques, B. L. Deekshatulu, Arun D. Kulkarni, G. Kashipati Rao Dec 1984

Quantitative Evaluation Of Enhancement Techniques, B. L. Deekshatulu, Arun D. Kulkarni, G. Kashipati Rao

Arun Kulkarni

Enhancement techniques are often used in image processing. In this paper, a quantitative measure of the image quality through evaluation of the coefficient of information content and the entropy has been suggested to evaluate the effect of enhancement. The image has been assumed to be a sample function of a homogeneous random field and the pixel values are estimated from the ‘past’ pixel values. The difference between the estimated value and the actual value of the pixel has been used as the criterion for defining the coefficient of information content. Also, the entropy obtained using the co-occurrance matrix of the …


Existence Of Global Solutions With Prescribed Asymptotic Behavior For Nonlinear Differential Equations, William F. Trench Dec 1984

Existence Of Global Solutions With Prescribed Asymptotic Behavior For Nonlinear Differential Equations, William F. Trench

William F. Trench

No abstract provided.


On The Eigenvalue Problem For Toeplitz Matrices Generated By Rational Functions, William F. Trench Dec 1984

On The Eigenvalue Problem For Toeplitz Matrices Generated By Rational Functions, William F. Trench

William F. Trench

We give formulas for the characteristic polynomial and eigenvectors of of $n\times n$ Toeplitz matrices generated by a formal Laurent series of a rational function $R(z)$. The formulas are in terms of a certain fixed polynomial with coefficients that are simple functions of $\lambda$ and the coefficients of $R(z)$. The complexity of the formulas is independent of $n$.