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151.
152.
M. -G. Porquet I. Deloncle A. Minkova A. N. Wilson B. J. P. Gall F. Hoellinger N. Schulz T. Kutsarova T. Venkova H. Sergolle J. Duprat F. Azaiez S. Bouneau C. Bourgeois C. Gautherin R. Lucas 《Acta Physica Hungarica A》1998,7(1):67-70
About thirty nuclei in theA≈100 mass region have been produced as fission fragments following the fusion-evaporation reactions28,30Si+176Yb at 145 MeV bombarding energy. These nuclei have been individually identified from their γ-ray cascades detected with the Eurogam2 array. The level schemes of several stable or neutron-rich nuclei have been extended to higher spins. From cross coincidences between transitions in complementary fragments, γ-rays de-exciting high-spin states of new isotopes can be identified and some aspects of the fission mechanism can be analyzed. 相似文献
153.
ORTHOGONAL MATRIX POLYNOMIALS WITH RESPECT TO A CONJUGATE BILINEAR MATRIX MOMENT FUNCTIONAL: BASIC THEORY 总被引:1,自引:1,他引:0
In this paper basic results for a theory of orthogonal matrix polynomials with respect to a conjugate bilinear matrix moment functional are proposed. Properties of orthogonal matrix polynomial sequences including a three term matrix relationship are given. Positive definite conjugate bilinear matrix moment functionals are introduced and a characterization of positive definiteness in terms of a block Haenkel moment matrix is established. For each positive definite conjugate bilinear matrix moment functional an associated matrix inner product is defined. 相似文献
154.
George George Horace Jervis und E. W. Lucas 《Fresenius' Journal of Analytical Chemistry》1901,40(12):791
Ohne Zusammenfassung 相似文献
155.
Konstantin Volosov Gautam Mitra Fabio Spagnolo Cormac Lucas 《Computational Optimization and Applications》2005,32(1-2):179-207
In this paper we formulate a model for foreign exchange exposure management and (international) cash management taking into consideration random fluctuations of exchange rates. A vector error correction model (VECM) is used to predict the random behaviour of the forward as well as spot rates connecting dollar and sterling. A two-stage stochastic programming (TWOSP) decision model is formulated using these random parameter values. This model computes currency hedging strategies, which provide rolling decisions of how much forward contracts should be bought and how much should be liquidated.The model decisions are investigated through ex post simulation and backtesting in which value at risk (VaR) for alternative decisions are computed. The investigation (a) shows that there is a considerable improvement to “spot only” strategy, (b) provides insight into how these decisions are made and (c) also validates the performance of this model. 相似文献
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Chalcogenide glass fibers have been successfully used for remote spectroscopy, temperature sensing and CO2 laser power delivery. In bulk form, chalcogenide glass is the most promising candidate for replacing the expensive germanium lenses for thermal imaging. 相似文献
159.
K. Lützenkirchen J. V. Kratz G. Wirth W. Brüchle L. Dörr K. Sümmerer R. Lucas J. Poitou C. Grégoire S. Bjørnholm 《Zeitschrift für Physik A Hadrons and Nuclei》1985,322(3):529-530
The integral β?-spectra of235U and239Pu fission products have been measured with a plastic scintillator telescope at an external neutron guide tube at the high flux reactor of the ILL in Grenoble. The highly enriched targets (150 – 800 γg/cm2) were placed in a fission chamber at a distance of approximately 110 m from the reactor core. From the measured beta-spectra absolute counting rates per MeV and fission have been calculated, which are compared with the results of earlier experiments of other authors and with recent theoretical calculations. 相似文献
160.
Sans résuméAvec 3 figures 相似文献