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排序方式: 共有96条查询结果,搜索用时 15 毫秒
1.
Gabriele Bonanno 《Journal of Global Optimization》1998,12(1):101-104
In this note we introduce a suitable class of functionals, including the class of integral functionals, and prove that any (strict) local minimum of a functional of this class, defined on a decomposable space, is a (strict) global minimum. So, the recent result obtained by Giner in [1] is specified and extended. 相似文献
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G. Bonanno 《International Journal of Game Theory》1992,20(4):429-447
A new game-form, theset-theoretic form, is introduced and it is shown that a set-theoretic form can be associated with every extensive form. The map from extensive forms to set-theoretic forms is not one-to-one and this fact is used to define a notion of equivalence for extensive games. A transformation for extensive forms is then defined, called theinterchange of contiguous simultaneous moves, and it is shown that it is possible to move from one game to any other game in the same equivalence class by using this transformation a finite number of times and without ever leaving the equivalence class. This transformation is a generalization of Thompson's interchange of decision nodes. Thus given an extensive gameG there is a different extensive gameG that is equivalent toG if and only if there are moves inG that are simultaneous and the difference betweenG andG lies exactly in the fact that (some of) these moves are taken in a different temporal order in the two games. 相似文献
5.
Dewald EL Suter LJ Landen OL Holder JP Schein J Lee FD Campbell KM Weber FA Pellinen DG Schneider MB Celeste JR McDonald JW Foster JM Niemann C Mackinnon AJ Glenzer SH Young BK Haynam CA Shaw MJ Turner RE Froula D Kauffman RL Thomas BR Atherton LJ Bonanno RE Dixit SN Eder DC Holtmeier G Kalantar DH Koniges AE Macgowan BJ Manes KR Munro DH Murray JR Parham TG Piston K Van Wonterghem BM Wallace RJ Wegner PJ Whitman PK Hammel BA Moses EI 《Physical review letters》2005,95(21):215004
The first hohlraum experiments on the National Ignition Facility (NIF) using the initial four laser beams tested radiation temperature limits imposed by plasma filling. For a variety of hohlraum sizes and pulse lengths, the measured x-ray flux shows signatures of filling that coincide with hard x-ray emission from plasma streaming out of the hohlraum. These observations agree with hydrodynamic simulations and with an analytical model that includes hydrodynamic and coronal radiative losses. The modeling predicts radiation temperature limits with full NIF (1.8 MJ), greater, and of longer duration than required for ignition hohlraums. 相似文献
6.
Alfio Bonanno Giampiero Esposito Claudio Rubano Paolo Scudellaro 《General Relativity and Gravitation》2007,39(2):189-209
In the framework of renormalization-group improved cosmologies, we use the Noether symmetry approach to get exact and general
integration of the matter-dominated cosmological equations. This is performed by using an expression of Λ = Λ (G) determined by the method itself. We also work out a comparison between such a model and the concordance ΛCDM model as to
the magnitude–redshift relationship, hence showing that no appreciable differences occur. 相似文献
7.
E. I. Moses R. E. Bonanno C. A. Haynam R. L. Kauffman B. J. MacGowan R. W. Patterson Jr R. H. Sawicki B. M. Van Wonterghem 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2007,44(2):215-218
The National Ignition Facility (NIF) is a 192-beam laser
facility presently under construction at LLNL. When completed, NIF will be a
1.8-MJ, 500-TW ultraviolet laser system. Its missions are to obtain fusion
ignition and to perform high energy density experiments in support of the
US nuclear weapons stockpile. Four of the NIF beams have been commissioned
to demonstrate laser performance and to commission the target area including
target and beam alignment and laser timing. During this time, NIF
demonstrated on a single-beam basis that it will meet its performance goals
and demonstrated its precision and flexibility for pulse shaping, pointing,
timing and beam conditioning. It also performed four important experiments
for Inertial Confinement Fusion and High Energy Density Science. Presently,
the project is installing production hardware to complete the project in
2009 with the goal to begin ignition experiments in 2010. An integrated plan
has been developed including the NIF operations, user equipment such as
diagnostics and cryogenic target capability, and experiments and
calculations to meet this goal. This talk will provide NIF status, the plan
to complete NIF, and the path to ignition. 相似文献
8.
Gabriele Bonanno Angela Sciammetta 《Journal of Mathematical Analysis and Applications》2012,390(1):59-67
In this paper, existence results of positive solutions to a Neumann problem involving the p-Laplacian are established. Multiplicity results are also pointed out. The approach is based on variational methods. 相似文献
9.
C. Bellecci A. Bonanno M. Camarca M. Conti L. La Rotonda R. Visentin 《Il Nuovo Cimento C》1984,7(2):169-178
Summary A model has been solved to evaluate the influence of different control options on the performances of a linear-collector solar
power plant. The results represent a basis for the choice between the different options.
This work has been performed in the framework of activities of the „Progetto Finalizzato Energetica” supported by the C.N.R. 相似文献
10.
Giacomo Bonanno 《Mathematical Logic Quarterly》1996,42(1):305-311
We investigate an axiomatization of the notion of common belief (knowledge) that makes use of no rules of inference (apart from Modus Ponens and Necessitation) and highlight the property of the set of accessibility relations that characterizes each axiom. Mathematics Subject Classification: 03B45, 68T25. 相似文献