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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：An inverse Lax-Wendroff procedure for finite difference schemes on the Cartesian grids
笛卡尔网格 有限差分格式 Lax-Wendroff逆过程
2023/11/13
In this talk, we introduce the so-called inverse Lax-Wendroff (ILW) boundary treatment for finite difference approximations on the Cartesian mesh. As the domain boundary may intersect with the grid in...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Number of rational points of difference varieties in finite difference fields
有限差分域 差分簇 有理点数
2023/4/13
A difference field is a field with a distinguished automorphism. Automorphisms of a finite field are powers of the Frobenius map. In this talk, I will discuss how to estimate the number of rational po...
The LHCb collaboration has measured a difference in mass between two particles of 0.00000000000000000000000000000000000001 grams – or, in scientific notation, 10-38 g. The result, reported in a paper ...
A NEW MULTI-SPECTRAL THRESHOLD NORMALIZED DIFFERENCE WATER INDEX (MST-NDWI) WATER EXTRACTION METHOD – A CASE STUDY IN YANHE WATERSHED
Water Extraction MST-NDWI Small Linear River Remote Sensing Yanhe Watershed
2018/5/17
Accurate remote sensing water extraction is one of the primary tasks of watershed ecological environment study. Since the Yanhe water system has typical characteristics of a small water volume and nar...
Species Difference in the Expression of Fas and Fas Ligand in Mature Mammalian Spermatozoa
sperm Fas antigen FasL apoptosis mammals
2018/3/5
Li Y., Sun M., Zhu J., Jiao G., Lin J., Dong H., Tan J., Zhou J. (2017): Species difference in the expression of
Fas and Fas ligand in mature mammalian spermatozoa. Czech J. Anim. Sci., 62, 519–526.
...
Analysis of Noise for Rapid-Scan and Step-Scan Methods of FT-IR Difference spectroscopy
Noise Rapid-Scan Step-Scan Methods FT-IR Difference spectroscopy
2016/5/23
Quantitative vibrational difference spectroscopy of small signals requires techniques that minimize spectral noise. As simple modulation of the sample followed by signal demodulation is often problema...
The Effect of Large Magnetic Fields and the g-factor Difference On the Triplet Population in Photosynthetic Reaction Centers
Large Magnetic Fields g-factor Difference Triplet Population Photosynthetic Reaction Centers
2016/5/20
The tnplet population m reduced photosynthetic reaction cente rs IS found to Increase on application of large magnetic fields (1 S-14 hG) We conclude that the tnplet IS fo rmed by charge recombmatron ...
Endocrine-disrupting polychlorinated biphenyls in metabolically healthy and unhealthy obese subjects before and after weight loss: difference at the start but not at the finish
endocrine disruptors metabolically healthy metabolic syndrome obesity polychlorinated biphenyls
2018/11/28
Background: A subset of obese individuals does not exhibit metabolically unfavorable features; this group is referred to as metabolically healthy obese (MHO). Serum concentrations of polychlorinated b...
An algorithm for doble difference joint hypocenter determination: application to the 2002 Molise (Central Italy) earthquake sequence
Aftershocks Foreshocks Joint Hypocenter Determination
2015/9/7
We have developed an original computer code for double difference hypocenter
determination including an independent routine for the cross-correlation estimate of the time
difference between two wave...
Analysis of a Non-linear Partial Difference Equation, and Its Application to Cardiac Dynamics
Partial difference equation Non-linear Cardiac dynamics Singular perturbation method Spatial bifurcations
2015/8/27
A model of a strip of cardiac tissue consisting of a one-dimensional chain of cardiac units is derived in the form of a non-linear partial difference equation. Perturbation analysis is performed on th...
Oceanography is a multidisciplinary field offering a range of career opportunities for the diversified workforce that exists today. Professionals conducting research or teaching about the oceans are e...
ON THE DIFFERENCE BETWEEN THE EMPIRICAL HISTOGRAM AND THE NORMAL CURVE, FOR SUMS: PART II
Histogram difference curve
2015/7/14
ON THE DIFFERENCE BETWEEN THE EMPIRICAL HISTOGRAM AND THE NORMAL CURVE, FOR SUMS: PART II.
ON THE MAXIMUM DIFFERENCE BETWEEN THE EMPIRICAL AND EXPECTED HISTOGRAMS FOR SUMS
N independent distributed random variables curve Sn probability histogram
2015/7/14
Suppose Sn
is a sum of n independent and identically
distributed random variables with E\Xl\If n is large,
Sn
is approximately normal. A histogram of k copies of Sn
will be close to the ...
A sweeping preconditioner for Yee’s finite difference approximation of time-harmonic Maxwell’s equations
Electromagnetic scattering Yee grid finite difference methods perfectly matched layers LDLT factorizations multifrontal method wave propagation in inhomogeneous and anisotropic media matrix preconditioners
2015/7/14
This paper is concerned with the fast iterative solution of linear systems arising from finite difference discretizations in electromagnetics. The sweeping preconditioner with moving perfectly matched...
A sharp bound on the L2 norm of the solution of a random elliptic difference equation
sharp bound L2 norm random elliptic difference equation
2015/7/14
We consider a stationary solution of the Poisson equation (λ − Lω)φλ(x; ω) = −∂∗b(x; ω), where λ > 0 and Lω is a random, discrete, elliptic operator given by Lωu(x) := ∂&...