نتایج جستجو برای: symmetric and asymmetric modes

تعداد نتایج: 16868619  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

Journal: :IEEE Trans. Computers 2000
Mohammad H. Azadmanesh Roger M. Kieckhafer

ÐIn a fault-tolerant distributed system, it is often necessary for nonfaulty processes to agree on the value of a shared data item. The criterion of Approximate Agreement does not require processes to achieve exact agreement on a value; rather, they need only agree to within a predefined numerical tolerance. Approximate Agreement can be achieved through convergent voting algorithms. Previous re...

Journal: :Physical review 2021

The non-Hermitian skin effect can be realized through asymmetric hopping between forward and backward directions, where all the modes of system are localized at one edge a finite 1D lattice. Here we show theoretically that in chain exciton-polariton micropillars with symmetric hopping, inherent nonlinearity exhibit double-sided (bi-skin) based fluctuations system, two edges system. To topologic...

غفار نژاد مهربان, آیدین , متفکرآزاد, محمد علی, منیعی, امید ,

Monetary shocks are one of the control tools in economic systems. A true perception of these shocks on economic systems can lead us to a suitable policy. In this paper, the impact of monetary shocks on output in Iran has been modeled and investigated using artificial neural networks. We investigated positive and negative shocks separately and confirmed asymmetric effect of these shocks. In addi...

A. Fakhraddini H. Saffari, S. S. Seyedjafari Olia

Concentrically braced frames (CBFs) are one of the efficient lateral load resisting systems in high seismicity regions. One of the common problems with the use of concentrically braced frames is limitation in the architectural application and position of the openings. Two-story X braced frames have more advantages than other configurations of concentrically braced frames, since in many cases th...

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We have chosen an Ising ASYNNNI (ASYmmetric Next Nearest Neighbor Interaction)   model under a grand canonical regime to investigate structural phase transition from a high symmetric tetragonal (Tet) to a low symmetric orthorhombic in YBa2Cu3O6+x , 0<x<1,  HTc system. Ordering process for absorbed oxygens from an external gas bath into the basal plane of the layered system is studied by Monte C...

Journal: :journal of the iranian chemical research 0
nader noroozi pesyan department of chemistry, faculty of science, urmia university, 57159, urmia, iran mahnaz saraei department of chemistry, tabriz payam-e-noor university, tabriz, iran bakhshali massoumi department of chemistry, tabriz payam-e-noor university, tabriz, iran maryam sarbazi department of chemistry, tabriz payam-e-noor university, tabriz, iran

4-chloro-3,5-dioxaphosphacyclohepta[2,1-;3,4-&apos;]dinaphthalene (binol-pcl) was found to be an efficient, bulky and selective reagent for the transformation of symmetric and asymmetric benzoins to the corresponding benziles at 0 °c to room temperature under nitrogen atmosphere in good yield.

Journal: :The European Physical Journal Plus 2020

2003
Gruia Calinescu Peng-Jun Wan

Depending on whether bidirectional links or unidirectional links are used for communications, the network topology under a given range assignment is either an undirected graph referred to as the symmetric topology, or a directed graph referred to as the asymmetric topology. The Min-Power Symmetric (resp., Asymmetric) k-Node Connectivity problem seeks a range assignment of minimum total power su...

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