Results 51 to 60 of about 78,659 (333)

Estimating lower probability bound of power system's capability to fully accommodate variable wind generation

open access: yesThe Journal of Engineering, 2019
As the penetration of wind generation increases, the uncertainty it brings has imposed great challenges to power system operation. To cope with the challenges, tremendous research work has been conducted, among which two aspects are of most importance ...
Bin Liu   +5 more
doaj   +1 more source

Minimal half-spaces and external representation of tropical polyhedra

open access: yes, 2011
We give a characterization of the minimal tropical half-spaces containing a given tropical polyhedron, from which we derive a counter example showing that the number of such minimal half-spaces can be infinite, contradicting some statements which ...
E. Gawrilow   +31 more
core   +1 more source

Halide‐Dependent Photoluminescence and Heavy‐Atom Effects in Low‐Melting Organic–Inorganic Manganese Halides

open access: yesAdvanced Functional Materials, EarlyView.
Two pyridinium‐based ionic liquid templated hybrid manganese halides, (C4Py)2[MnCl4] and (C4Py)2[MnBr4], display similar bulk structures but show significantly different photoluminescence behaviors due to the bromine heavy‐atom effect. Their stable local Mn environments remain intact even in the molten state, allowing applications such as luminescence ...
Biswajit Bhattacharyya   +22 more
wiley   +1 more source

Volume Polynomials for Some Polyhedra in Spaces of Constant Curvature

open access: yesМоделирование и анализ информационных систем, 2015
It is known that for each simplicial polyhedron P in 3-space there exists a monic polynomial Q depending on the combinatorial structure of P and the lengths of its edges only such that the volume of the polyhedron P as well as one of any polyhedron ...
D. I. Sabitov, I. Kh. Sabitov
doaj   +3 more sources

Existence and regularity of solutions for Stokes systems with non-smooth boundary data in a polyhedron

open access: yesElectronic Journal of Differential Equations, 2017
The Stokes problem is fundamental in the study of fluid flows. In the case of smooth domains and data, this problem is extensively studied in the literature. But there are only a few results for non-smooth boundary data.
Houria Adjal   +2 more
doaj  

Combinatorial Lemmas for Polyhedrons

open access: yesDiscussiones Mathematicae Graph Theory, 2005
Summary: We formulate general boundary conditions for a labelling to assure the existence of a balanced \(n\)-simplex in a triangulated polyhedron. Furthermore we prove a Knaster-Kuratowski-Mazurkiewicz type theorem for polyhedrons and generalize some theorems of Ichushi and Idzik.
Idzik, Adam   +1 more
openaire   +1 more source

Ultrasmall Platinum Nanoparticles for Radiation‐Enhanced Cancer Therapy

open access: yesAdvanced Functional Materials, EarlyView.
This work proposes a nanomedicine‐based strategy to enhance X‐ray radiotherapy for cancer treatment. Ultrasmall Pt‐NPs exhibit catalase‐like activity that may contribute to modulation of the tumor microenvironment and amplify interactions between radiation and biological matter, leading to increased DNA damage.
Miguel Encinas‐Gimenez   +8 more
wiley   +1 more source

Coding and Compression of Three Dimensional Meshes by Planes [PDF]

open access: yes, 2013
The present paper suggests a new approach for geometric representation of 3D spatial models and provides a new compression algorithm for 3D meshes, which is based on mathematical theory of convex geometry.
Aramyan, Rafik   +2 more
core  

Polyhedra in loop quantum gravity

open access: yes, 2011
Interwiners are the building blocks of spin-network states. The space of intertwiners is the quantization of a classical symplectic manifold introduced by Kapovich and Millson.
A. Ashtekar   +19 more
core   +3 more sources

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

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