Results 81 to 90 of about 2,967,183 (293)

Linear programming with inequality constraints via entropic perturbation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
A dual convex programming approach to solving linear programs with inequality constraints through entropic perturbation is derived. The amount of perturbation required depends on the desired accuracy of the optimum.
H.-S. Jacob Tsao, Shu-Cherng Fang
doaj   +1 more source

Robust resource allocation for cognitive relay networks with multiple primary users

open access: yesEURASIP Journal on Wireless Communications and Networking, 2017
A robust resource allocation (RA) algorithm for cognitive relay networks with multiple primary users considering joint channel uncertainty and interference uncertainty is proposed to maximize the capacity of the networks subject to the interference ...
Weiwei Yang, Xiaohui Zhao
doaj   +1 more source

Duality for semi-definite and semi-infinite programming [PDF]

open access: yes, 2003
In this article, we study semi-definite and semi-infinite programming problems (SDSIP). which includes semi-infinite linear programs and semi-definite programs as special cases.
Li, S.   +5 more
core   +1 more source

Balancing Hydrophobicity and Hydrophilicity: Dual Filler‐Engineered Proton Exchange Membranes for Durable, High‐Power Fuel Cells

open access: yesAdvanced Functional Materials, EarlyView.
Polarity‐matched Zr–MOFs program Nafion's nanoscale morphology during solution casting. Hydrophilic UiO‐66 preserves hydrated pathways, while hydrophobic UiO‐67 increases the proton hopping sites by densifying ionic clusters. Combining both fillers yields a membrane that delivers 176 mS cm−1 conductivity, reaches 1.46 W cm−2 under 200 kPa, and triples ...
Yonghwi Cho   +13 more
wiley   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

Fritz-John Type Necessary Conditions for Optimality of Convex Generalized Semi-Infinite Optimization Problems

open access: yesJournal of Mathematical Extension, 2013
In this paper, we consider the Abadie and the Basic constraint qualifications (CQ) for lower level problem of convex generalized semi-infinite programming problems, and we derive the Fritz-John necessary optimality conditions for the problem under ...
N. Kanzi
doaj  

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

open access: yesAdvanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li   +7 more
wiley   +1 more source

Mechanical Programming of PEGDA‐β‐CD Polyrotaxane‐Based Hydrogels via Host–Guest Molecular Recognition

open access: yesAdvanced Functional Materials, EarlyView.
A mechanically programmable hydrogel for tissue engineering is developed by modulating the molecular threading density of poly(ethylene glycol) diacrylate‐β‐cyclodextrin (PEGDA‐β‐CD) polyrotaxane and combining it with β‐CD‐modified gelatin. The polyrotaxane‐guided transition from disordered pores to laminar microstructures enables precise tuning ...
Shiyi Chen   +10 more
wiley   +1 more source

Solving Semi-Infinite Variational Inequalities

open access: yes, 2006
The variational inequality problem arises in numerous contexts. In this dissertation, we consider solving a semi-infinite variational inequality problem, which is a variational inequality problem defined on a domain described by infinitely many ...
Ozcam, Burcu
core  

Reversible Tuning of Multiple Molecular Kinking for Stem Cell Regulation In Vivo

open access: yesAdvanced Functional Materials, EarlyView.
In this work, we introduce the novel concept of background component‐free “multiple kinks” material platform composed solely of liganded multiple kink‐bearing molecules as a strategy for dynamic biomaterial design. Tri‐kink molecules enable effective near‐infrared light‐triggered ligand masking and visible light‐triggered ligand exposure, thereby ...
Kanghyeon Kim   +28 more
wiley   +1 more source

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