نتایج جستجو برای: cardinality constrained mean variance ccmv

تعداد نتایج: 747495  

Journal: :Virology 1997
W R Wikoff C J Tsai G Wang T S Baker J E Johnson

The three-dimensional structure of cucumber mosaic virus (CMV) was analyzed at 23 A resolution by cryoelectron microscopy and image reconstruction, demonstrating structural similarity to cowpea chlorotic mottle virus (CCMV), another member of the Bromoviridae family. The CMV structure was determined at 8 A resolution by X-ray crystallography with phases determined by single isomorphous replacem...

Journal: :Pediatrics 2017
Karen B Fowler Faye P McCollister Diane L Sabo Angela G Shoup Kris E Owen Julie L Woodruff Edith Cox Lisa S Mohamed Daniel I Choo Suresh B Boppana

BACKGROUND AND OBJECTIVE Congenital cytomegalovirus (cCMV) infection remains a leading cause of childhood hearing loss. Currently universal CMV screening at birth does not exist in the United States. An alternative approach could be testing infants who do not pass their newborn hearing screening (NHS) for cCMV. This study was undertaken to evaluate whether a targeted approach will identify infa...

Journal: :International Journal of Industrial Engineering Computations 2011

Journal: :Numerical Algebra, Control and Optimization 2023

The cardinality constrained optimization problem (CCOP) is an where the maximum number of nonzero components any feasible point bounded. In this paper, by rewriting constraint as a requiring that must lie in union certain subspaces, we consider CCOP mathematical program with disjunctive subspaces constraints (MPDSC). Since subspace special case convex polyhedral set, MPDSC (MPDC). Using structu...

2007
Michael A. Newton

Given constants s1, s2, . . . , sG, we consider variables X = ∑ sg1[g ∈ A] and Y = ∑ sg1[g ∈ B] as random variables with a joint distribution determined by taking (A,B) as uniformly random among set pairs in which A has fixed cardinality m, B has fixed cardinality n, and the intersection A ∩ B has fixed size q. Arguments about without-replacement sampling give the marginal mean and variance of ...

Journal: :Journal of Industrial and Management Optimization 2023

Based on the definition of approximate solution (also known as $ \varepsilon $-solution), we propose idea generalized convexity semi-infinite optimization in this research. The nonsmooth sufficient and necessary criteria resilient solutions are then provided. Additionally, it is demonstrated that approximative assumption holds for both strong weak robust dual theorems. efficient cardinality/mea...

Journal: :CoRR 2013
Mahdi Moeini

In this paper we consider a generalization of the Markowitz's Mean-Variance model under linear transaction costs and cardinality constraints. The cardinality constraints are used to limit the number of assets in the optimal portfolio. The generalized model is formulated as a mixed integer quadratic programming (MIP) problem. The purpose of this paper is to investigate a continuous approach base...

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