排序方式: 共有27条查询结果,搜索用时 15 毫秒
11.
Annamaria Barbagallo Giovanni Scilla 《Journal of Mathematical Analysis and Applications》2018,457(2):1118-1134
A class of stochastic weighted variational inequalities in non-pivot Hilbert spaces is proposed. Existence and continuity results are proved. These theoretical results play a prominent role in order to introduce a new weighted transportation model with uncertainty. Moreover, they allow to establish the equivalence between the random weighted equilibrium principle and a suitable stochastic weighted variational inequality. At the end, a numerical model is discussed. 相似文献
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Annamaria Barbagallo Rosalba Di Vincenzo 《Journal of Mathematical Analysis and Applications》2011,382(1):231-247
We are concerned with an infinite dimensional variational inequality which is connected with the dynamic oligopolistic market equilibrium problem. We will provide existence theorems and show, under minimal assumptions on the data, the Lipschitz continuity of the solution. Moreover a general duality theory is provided overcoming the difficulty of the voidness of the interior of the ordering cone which defines the cone constraints. 相似文献
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We introduce variational inequalities defined in non-pivot Hilbert spaces and we show some existence results. Then, we prove
regularity results for weighted variational inequalities in non-pivot Hilbert space. These results have been applied to the
weighted traffic equilibrium problem. The continuity of the traffic equilibrium solution allows us to present a numerical
method to solve the weighted variational inequality that expresses the problem. In particular, we extend the Solodov-Svaiter
algorithm to the variational inequalities defined in finite-dimensional non-pivot Hilbert spaces. Then, by means of a interpolation,
we construct the solution of the weighted variational inequality defined in a infinite-dimensional space. Moreover, we present
a convergence analysis of the method. 相似文献
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Jorge Morgado Ana Charas Nunzio Barbagallo Luis Alcácer Manuel Matos Franco Cacialli 《Macromolecular Symposia》2004,212(1):381-386
We report on the use of indium-tin oxide surface modification, by grafting of highly polar p-disubstituted benzenes, in the fabrication of light-emitting diodes. The polar compounds possess COCl or SO2Cl grafting groups and CF3 or NO2 as highly electronegative groups, leading to the formation of a dipolar monolayer, which brings about an increase in ITO work function, thereby reducing the barrier for hole injection into luminescent polymers. We observe that the effect of this self-assembled monolayer, in terms of light-onset voltage, efficiency and luminance, is at least comparable to the use of a hole injection layer of doped poly[(3,4-ethylenedioxy)thiophene] for LEDs using poly({2-[(2-ethylhexyl)oxy]-5-methoxy-1,4-phenylene}vinylene) (MEH-PPV) and polyfluorene blends as active layers. 相似文献
15.
Annamaria Barbagallo Paolo Mauro 《Journal of Optimization Theory and Applications》2012,155(1):288-314
The paper is devoted to generalize a previous model of the dynamic oligopolistic market equilibrium problem allowing the presence of production excesses and assuming, in a more reasonable way that the total amounts of commodity shipments from a firm to all the demand markets be upper bounded. First, we give equilibrium conditions in terms of the well-known dynamic Cournot–Nash equilibrium principle. Then we show that such conditions can be expressed in terms of Lagrange multipliers; namely, by means of an utility function, prove that both equilibrium conditions can be equivalently expressed by a variational inequality. The variational formulation allows us to provide existence theorems and qualitative properties for equilibrium solutions. At last, a numerical example illustrates the results obtained. 相似文献
16.
Annamaria Barbagallo Patrizia Daniele Sofia Giuffrè Antonino Maugeri 《European Journal of Operational Research》2014
Without using a technical language, but using the universal language of mathematics, we provide simple but significant laws, as Deficit Formula, Balance Law and Liability Formula, for the management of the world economy. Decisions, under these laws, for the recovery of the economy and for the good governance clearly appear. Further a simple but useful economical indicator E(t) is provided and the results are illustrated with a significant example. 相似文献
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Giuseppe Granata Salvatore Barbagallo Antonio Perdicaro Agostino Marrazzo Andrea Santagati Laura Lombardo Venera Cardile 《Journal of heterocyclic chemistry》2006,43(4):1099-1104
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This communication contains data from a comparison between the detection limits obtained using surface enhanced resonance Raman scattering (SERRS) and fluorescence detection of dye labelled oligonucleotides. The results show that the detection limits for SERRS are generally at least three orders of magnitude lower than those obtained for fluorescence. 相似文献
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