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921.
Rolf G. Karlsson 《BIT Numerical Mathematics》1988,28(1):19-26
A fast solution to the complete minimum matching problem using a greedy heuristic is presented, when the points are distributed on a grid domain. For this a data structure which efficiently supports nearest neighbor searches and deletions from a planar point set is developed. 相似文献
922.
K. W. Smillie 《BIT Numerical Mathematics》1988,28(3):439-449
The Nested Interactive Array Language Nial is based on a mathematical theory of hierarchical rectangular arrays known as array theory. This paper gives a brief introduction to array theory and Nial and then discusses the main characteristics of the Nial language, its current implementation and some of its applications.Dedicated to Peter Naur on the occasion of his 60th birthday. 相似文献
923.
A many-body microscopic band-mixing formulation of variation after projection of angular momentum and conservation of nucleon
number is used to study the yrast band and first excitedK
π
=0+ band in the doubly even nuclei154,156Gd. The computed energy spectra and the interband and intra-band B (E2) values are in good agreement with corresponding experimental
data. Connection with the phenomenological model of Stephens and Simon is discussed, bringing out the role played by thei
13/2 neutron pair in the microscopic formalism. 相似文献
924.
P. Masani 《Journal of multivariate analysis》1977,7(2):292-335
We extend the Lévy inversion formula for the recovery of a bounded measure over from its Fourier-Stieltjes transform to bounded complex-valued, orthogonally scattered Hilbert space-valued, and spectral projection operator-valued measures over any first countable locally compact Abelian group. All our results are direct generalizations of known inversions for . 相似文献
925.
Andrzej Kozek 《Journal of multivariate analysis》1977,7(1):89-106
A general method for obtaining inequalities of Cramér-Rao type for convex loss functions is presented. It is shown under rather weak assumptions that there are at least as many such inequalities as best unbiased estimators. More precisely, it is shown that an estimator is efficient with respect to an inequality of Cramér-Rao type if and only if it is the best in the class of unbiased estimators. Moreover, theorems of Blyth and Roberts (“Proceedings Sixth Berkeley Symposium on Math. Statist. Prob.,”) and of Blyth (Ann. Statist.2, 464–473) are extended. We make an use of methods of convex analysis and properties of convex integral functionals on Orlicz spaces. 相似文献
926.
High-resolution Fourier transform spectroscopy has been applied to confirm previously proposed assignments for nine far infrared (FIR) laser lines from the CH3-deformation state of CH3OH and one line from the CH3-rocking state. Accurate frequencies are deduced for the observed and other predicted FIR laser transitions. FIR torsional branch frequencies in the ground state which were used in the confirmation are presented. Comments are also made on the OH-bending mode of CH3OH. 相似文献
927.
Józef Chaber 《Topology and its Applications》1982,14(2):131-142
We investigate the classes of spaces that can be mapped onto a metrizable space by a closed mapping with fibers having a given property . We give some conditions which assure that such classes are closed under the action of perfect or open and compact mappings. Such a treatment includes the investigation of paracompact p-spaces and M-spaces. We also discuss spaces that can be mapped onto a metacompact Moore space. 相似文献
928.
929.
T.A. Chapman 《Topology and its Applications》1982,14(3):247-262
In this paper a boundary theorem for Hilbert cube manifolds is established,where it is required that the boundary be put on the manifold with arbitrarily small control in a given compact metric parameter space. 相似文献
930.
Y. C. Chiu H. J. Hwang 《Colloids and surfaces. A, Physicochemical and engineering aspects》1994,90(2-3):155-165
Vitamin E is widely used in pharmaceutical, food and cosmetic preparations. This paper discusses methods of preparing a vitamin E emulsion by using sodium N-lauroylsarcosinate (SNLS) ionic surfactant. The amount of vitamin E dissolved in water was analyzed by turbidity and UV absorption measurements. The emulsion droplet size was determined by laser light scattering. Microemulsions with small particle size and high resistance to oxidation in air can be obtained by solubilizing vitamin E in SNLS solution. The dissolution is rapid and the surfactant solution has high solubilization power. At 0.7% surfactant concentration, the saturation value is 1 g vitamin E per gram of surfactant. The micellar dissociation concentration (MDC) of the surfactant can be estimated from a vitamin saturation—surfactant concentration curve. Dissolution mechanisms at different surfactant concentrations are interpreted by use of the MDC and CMC (critical micellar concentration) concepts. 相似文献