نتایج جستجو برای: sign function

تعداد نتایج: 1261484  

Journal: :iranian journal of fuzzy systems 2013
saeid abbasbandy rahele nuraei mojtaba ghanbari

recently, abbasbandy and asady have been proposed a modificationof the distance based approach, namely ``sign distance method''.however, in this paper, it is shown that this method has some drawbacks, i.e.,the result is not consistent with human intuition for specialcases and this method cannot always logically infer rankingorder of the images of the fuzzy numbers. in this paper, wepresent a re...

2007
Tilo Wettig Bruno Lang Jacques Bloch

The overlap Dirac operator at nonzero quark chemical potential involves the computation of the sign function of a non-Hermitian matrix. In this talk we present an iterative method, first proposed by us in Ref. [1], which allows for an efficient computation of the operator, even on large lattices. The starting point is a Krylov subspace approximation, based on the Arnoldi algorithm, for the eval...

Journal: :Journal of immunology 2002
Anneke Engering Teunis B H Geijtenbeek Sandra J van Vliet Mietske Wijers Ellis van Liempt Nicolas Demaurex Antonio Lanzavecchia Jack Fransen Carl G Figdor Vincent Piguet Yvette van Kooyk

Dendritic cells (DCs) capture Ags or viruses in peripheral tissue to transport them to lymphoid organs to induce cellular T cell responses. Recently, a DC-specific C-type lectin was identified, DC-specific ICAM-grabbing non-integrin (DC-SIGN), that functions as cell adhesion receptor mediating both DC migration and T cell activation. DC-SIGN also functions as an HIV-1R that captures HIVgp120 an...

ژورنال: کنترل 2022

 In the present paper, a class of hybrid, nonlinear and non linearizable dynamic systems is considered. The noted dynamic system is generalized to a multi-agent configuration. The interaction of agents is presented based on graph theory and finally, an interaction tensor defines the multi-agent system in leader-follower consensus in order to design a desirable controller for the noted system. A...

2006
MICHAEL H. G. HOFFMANN

This contribution essentially is about the role of signs and sign systems in the construction of knowledge and understanding by social scientists (e.g., educational researchers, psychologists) interpreting educational data and the constraints of relationship between the knowledge these scientists bring to the interpretation and the knowledge displayed in the data on the interpretative results. ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Li Wu Arman A Bashirova Thomas D Martin Loreley Villamide Erin Mehlhop Andrei O Chertov Derya Unutmaz Melissa Pope Mary Carrington Vineet N KewalRamani

Here, we describe the isolation and characterization of the rhesus macaque homolog for human DC-SIGN, a dendritic cell-specific C-type lectin. mac-DC-SIGN is 92% identical to hu-DC-SIGN. mac-DC-SIGN preserves the virus transmission function of hu-DC-SIGN, capturing and efficiently transducing simian and human immunodeficiency virus to target CD4(+) T cells. Surprisingly, however, mac-DC-SIGN pl...

Journal: :Journal of virology 2002
Carmen P Alvarez Fátima Lasala Jaime Carrillo Oscar Muñiz Angel L Corbí Rafael Delgado

Ebola virus is a highly lethal pathogen responsible for several outbreaks of hemorrhagic fever. Here we show that the primate lentiviral binding C-type lectins DC-SIGN and L-SIGN act as cofactors for cellular entry by Ebola virus. Furthermore, DC-SIGN on the surface of dendritic cells is able to function as a trans receptor, binding Ebola virus-pseudotyped lentiviral particles and transmitting ...

2008
JANG SOO KIM

Using growth diagrams, we define skew domino Schensted algorithm which is a domino analogue of “Robinson-Schensted algorithm for skew tableaux” due to Sagan and Stanley. The color-to-spin property of Shimozono and White is extended. As an application, we give a simple generating function for a weighted sum of skew domino tableaux whose special case is a generalization of Stanley’s sign-imbalanc...

2008
JANG SOO KIM

Using growth diagrams, we define skew domino Schensted algorithm which is a domino analogue of “Robinson-Schensted algorithm for skew tableaux” due to Sagan and Stanley. The color-to-spin property of Shimozono and White is extended. As an application, we give a simple generating function for a weighted sum of skew domino tableaux whose special case is a generalization of Stanley’s sign-imbalanc...

2001
Ioannis Z. Emiris Bernard Mourrain Michael N. Vrahatis

We implement the concept of topological degree to isolate and compute all zeros of systems of nonlinear algebraic equations when the only computable information required is the algebraic signs of the components of the function. The basic theorems of Kronecker–Picard theory relate the number of roots to the topological degree. They are combined with grid methods in order to compute the topologic...

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