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91.
92.
Csaba P. Keszthelyi 《光谱学快报》2013,46(11):931-940
Experimental findings concerning liquid state relaxation processes of electronically excited molecules, coming from time-resolved spectroscopy and travelling wave dye lasers, offer a formidable basis for restructuring some of the theories dealing with relaxation processes. Comparison of the prime research literature with standard texts shows a severe time lag in the dissemination of essential concepts, while comparison of ‘traditional’ fluorescence with intra-cavity photon emission reveals basic differences involving relativistic effects and vector space construction, mitigating against the practice of directly incorporating laser based data into ordinary chemical dynamics. 相似文献
93.
94.
Csaba P. Keszthelyi 《光谱学快报》2013,46(9):641-651
Developed from the application of operational mathematics and Markoff-theory in quantum mechanics [CA: 81: 8225v], transform space treatment of Einstein diffusion [CA: 82: 49699s], and acoustoopic effects in lasers [CA: 82: 162686y], the paper examines non-classical aspects of laser driven fusion presenting favorable options which remain generally inexplored. 相似文献
95.
96.
For every planar straight line graph (Pslg), there is a vertex-face assignment such that every vertex is assigned to at most two incident faces, and every face is assigned to all its reflex corners and one more incident vertex. Such an assignment allows us to augment every disconnected Pslg into a connected Pslg such that the degree of every vertex increases by at most two. 相似文献
97.
Csaba Mészáros 《Computational Optimization and Applications》2007,36(2-3):309-320
During the iterations of interior point methods symmetric indefinite systems are decomposed by LD̂L
T
factorization. This step can be performed in a special way where the symmetric indefinite system is transformed to a positive
definite one, called the normal equations system. This approach proved to be efficient in most of the cases and numerically
reliable, due to the positive definite property. It has been recognized, however, that in case the linear program contains
“dense” columns, this approach results in an undesirable fill–in during the computations and the direct factorization of the
symmetric indefinite system is more advantageous. The paper describes a new approach to detect cases where the system of normal
equations is not preferable for interior point methods and presents a new algorithm for detecting the set of columns which
is responsible for the excessive fill–in in the matrix AA
T
. By solving large–scale linear programming problems we demonstrate that our heuristic is reliable in practice.
This work was supported in part by the Hungarian Scientific Research Fund OTKA K60480. 相似文献
98.
Esterification of sodium salt of carboxilic acids were performed with alkyl bromide in phase-transfer conditions without solvent. 相似文献
99.
An improved preparation of tosylhydrazones of α- and β-keto esters, by means of active aluminium oxide as catalyst, are described. 相似文献
100.
Jürgen Brem Monica Ioana Toşa Csaba Paizs Elemér Vass Florin Dan Irimie 《Tetrahedron: Asymmetry》2010,21(3):365-373
Starting from the racemic ethyl 3-hydroxy-3-(10-alkyl-10H-phenothiazin-3-yl)propanoates as substrates, a multienzymatic procedure was developed for the efficient synthesis of the corresponding highly enantiomerically enriched (R)- and (S)-3-heteroaryl-3-hydroxypropanoic acids. 相似文献