Results 11 to 20 of about 301 (40)

S-Lemma with Equality and Its Applications [PDF]

open access: yes, 2015
Let $f(x)=x^TAx+2a^Tx+c$ and $h(x)=x^TBx+2b^Tx+d$ be two quadratic functions having symmetric matrices $A$ and $B$. The S-lemma with equality asks when the unsolvability of the system $f(x)
R. L. Sheu   +6 more
core   +1 more source

On certain classes of variational inequalities and related iterative algorithms

open access: yesInternational Journal of Stochastic Analysis, Volume 9, Issue 1, Page 43-56, 1996., 1995
In this paper, we introduce and study some new classes of variational inequalities and Wiener‐Hopf equations. Essentially using the projection technique, we establish the equivalence between the multivalued general quasi‐variational inequalities and the multivalued implicit Wiener‐Hopf equations.
Muhammad Aslam Noor
wiley   +1 more source

Portfolio optimization with two coherent risk measures

open access: yes, 2020
We provide analytical results for a static portfolio optimization problem with two coherent risk measures. The use of two risk measures is motivated by joint decision-making for portfolio selection where the risk perception of the portfolio manager is of
Aktürk, Tahsin Deniz, Ararat, Çağın
core   +2 more sources

Sensitivity Analysis of a Stationary Point Set Map under Total Perturbations. Part 2: Robinson Stability

open access: yes, 2018
In Part 1 of this paper, we have estimated the Fr\'echet coderivative and the Mordukhovich coderivative of the stationary point set map of a smooth parametric optimization problem with one smooth functional constraint under total perturbations.
Huyen, Duong Thi Kim   +2 more
core   +1 more source

The necessary and sufficient conditions of copositive tensors

open access: yes, 2013
In this paper, it is proved that (strict) copositivity of a symmetric tensor $\mathcal{A}$ is equivalent to the fact that every principal sub-tensor of $\mathcal{A}$ has no a (non-positive) negative $H^{++}$-eigenvalue.
Qi, Liqun, Song, Yisheng
core   +1 more source

Infant mental health integration into OB care leads to increased connection to services during the perinatal period

open access: yesInfant Mental Health Journal: Infancy and Early Childhood, Volume 46, Issue 1, Page 95-111, January 2025.
Abstract We compared referrals and connection to care between perinatal patients: 90 receiving OB/GYN care in clinics with integrated behavioral health consultants with infant mental health specialization (IMH‐BHC), and 68 receiving traditional care, in the United States.
Jennifer M. Jester   +8 more
wiley   +1 more source

Quadratization of Symmetric Pseudo-Boolean Functions [PDF]

open access: yes, 2013
A pseudo-Boolean function is a real-valued function $f(x)=f(x_1,x_2,\ldots,x_n)$ of $n$ binary variables; that is, a mapping from $\{0,1\}^n$ to $\mathbb{R}$.
Anthony, Martin   +3 more
core   +1 more source

Ultraviolet radiation protection factors of livestock shade cloths for free‐range pigs

open access: yesVeterinary Dermatology, Volume 35, Issue 6, Page 641-651, December 2024.
Background – Protection from solar ultraviolet radiation (UVR) is paramount in light‐skinned pig breeds such as Yorkshire or Landrace to avoid sunburn. Objectives – Determination of the UVR exposure of a pig and the sun protection abilities of shade cloths with different shade rates.
A. W. Schmalwieser   +4 more
wiley   +1 more source

An SDP Approach For Solving Quadratic Fractional Programming Problems [PDF]

open access: yes, 2014
This paper considers a fractional programming problem (P) which minimizes a ratio of quadratic functions subject to a two-sided quadratic constraint. As is well-known, the fractional objective function can be replaced by a parametric family of quadratic ...
Nguyen, Van-Bong   +2 more
core  

Semidefinite approximation for mixed binary quadratically constrained quadratic programs [PDF]

open access: yes, 2014
Motivated by applications in wireless communications, this paper develops semidefinite programming (SDP) relaxation techniques for some mixed binary quadratically constrained quadratic programs (MBQCQP) and analyzes their approximation performance.
Hong, Mingyi, Luo, Zhi-Quan, Xu, Zi
core  

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