نتایج جستجو برای: this cannot be done unless structural constraints are overcome
تعداد نتایج: 8562795 فیلتر نتایج به سال:
there are many approaches for solving variety combinatorial optimization problems (np-compelete) that devided to exact solutions and approximate solutions. exact methods can only be used for very small size instances due to their expontional search space. for real-world problems, we have to employ approximate methods such as evolutionary algorithms (eas) that find a near-optimal solution in a r...
Certain properties of the network of departure Ns and the padding network NP of an (n + I&node resistive n-port network containing no negative conductances are established. Based on these properiies, some necessary conditions and a sufficient condition for the realizability of the Y matrices of (n + 2J-node resistive n-port nehvorks ore obtained. A new proof for the supremacy condition is given...
in this thesis we will present three topics. we define approximate fixed points in fuzzy normed spaces. also we obtain some necessary and sufficient conditions on the existence of? -fixed points for ? > 0. at the continue some results about approximate fixed points for a class of non-expansive maps on g-metric spaces are obtained and we define approximate fixed points in partial metric spa...
abstract part one: the electrode oxidation potentials of a series of eighteen n-hydroxy compounds in aqueous solution were calculated based on a proper thermodynamic cycle. the dft method at the level of b3lyp-6-31g(d,p) was used to calculate the gas-phase free energy differences ,and the polarizable continuum model (pcm) was applied to describe the solvent and its interaction with n-hydroxy ...
The authors of this article give us a provocative title " Should all specimens taken during surgical treatment of patients with BPH be assessed by a pathologist? " [1]. The answer in one sense is obvious – yes. For many practical and scientific reasons, there is no question that in modern hospitals where there is a pathology department, every specimen obtained from the operating theater is subj...
We raise the problem of the minorities' survival in the presence of positive network externalities. We rely on the example of thematic clubs to illustrate why and in which circumstances such survival problems might appear, …rst considering the case of simple network externalities and then the case of cross network externalities. Sonnac and Skerdilajda Zanaj for their comments and suggestions.
the thesis has been arranged into five chapters and mainly concerned with the baer-invariant of groups which is the generalization of the schur-multiplier with respect to the variety of groups. chapter one is devoted to collect some notation and background information which are needed in the next chapters. its also contains some important statements which will be generalized in this thesis. cha...
uncertainty in the financial market will be driven by underlying brownian motions, while the assets are assumed to be general stochastic processes adapted to the filtration of the brownian motions. the goal of this study is to calculate the accumulated wealth in order to optimize the expected terminal value using a suitable utility function. this thesis introduced the lim-wong’s benchmark fun...
veloped mostly in the past five years, and he is convinced that although an expensive specialty it should be protected from cuts. "There is no doubt that neonatal intensive care saves the lives of many babies and that is of incalculable value, but perhaps more important in an unemotional economic sense is the improved quality of the babies that survive." Institutional care of the physically and...
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