Results 1 to 10 of about 2,409 (288)

Polyhedron Optimization for Power Allocation of Cell-Free Based IRS System

IEEE Access
In this paper, re-configurable intelligent reflecting surfaces (IRS) based on cell-free communications to serve multi-user (MU) are considered. This is to enhance the transmission for the next generation of wireless communications.
Mohamad A. Ahmed, Abdullah Baz, Mostafa M. Fouda   +2 more
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LOCAL STABILITY AND NATURAL MOTIONS OF THE MULTI-FACE DOME ROD STRUCTURE

International Journal for Computational Civil and Structural Engineering, 2023
The research  object is a cyclically symmetric construction of a two-tier dome in the form of a convex polyhedron. Load and deflection critical parameters were determined for this construction pyramidal element. The behavior features of the conservative
Dmitriy Zhuravlev, Alexander Zhuravlev
doaj   +1 more source

A bis-chelate o-vanillin-2-ethanolamine copper(II) complex bearing both imine and amine forms of the ligand

Acta Crystallographica Section E: Crystallographic Communications, 2021
The molecular bis-chelate complex (2-{[(2-hydroxyethyl-κO)amino-κN]methyl}-6-methoxyphenolato-κO)(2-{[(2-hydroxyethyl)imino-κN]methyl}-6-methoxyphenolato-κO)copper(II), [Cu(C10H14NO3)(C10H12NO3)] or [Cu(HLim)(HLam); HLim = C10H14NO3; HLam = C10H12NO3 ...
Nataliya Plyuta, Vladimir N. Kokozay, Julia A. Rusanova, Halyna Buvailo, Evgeny Goreshnik, Svitlana Petrusenko   +5 more
doaj   +1 more source

The Hungry Ant: Development of Video-Based Learning on Polyhedron

International Journal of Interactive Mobile Technologies (iJIM), 2021
This research on learning media development is to answer the challenge of using technology in this 21st century wherein technology is growing rapidly. The purpose of this research is to develop a learning media in the form of learning video on primary school topics. Researchers chose polyhedron to be the research subject.
Neni Hermita, Zetra Hainul Putra, Jesi Alexander Alim, Jianlan Tang, Tommy Tanu Wijaya, Li Li, Jerito Pereira, Maximus Tamur   +7 more
openaire   +3 more sources

A two-level vertex-searching global algorithm framework for bilevel linear fractional programming problems

Systems Science & Control Engineering, 2020
We propose a new two-level vertex-searching algorithm framework that finds a global optimal solution to the continuous bilevel linear fractional programming problem over a compact polyhedron, in which both the upper and the lower objectives are linear ...
Hui-Ju Chen
doaj   +1 more source

A novel method of determining the optimal polyhedral orientation for discrete global grid systems applicable to regional-scale areas of interest

International Journal of Digital Earth, 2020
The polyhedral discrete global grid system (DGGS) is a multi-resolution discrete earth reference model supporting the fusion and processing of multi-source geospatial information.
Jianbin Zhou, Jin Ben, Rui Wang, Mingyang Zheng, Xiaochuang Yao, Lingyu Du   +5 more
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Synthesis and Spectral Studies of Some Homo Dinuclear Lanthanide(III) Complexes of a Mesogenic Schiff Base

Acta Chimica Slovenica, 2021
A mesogenic Schiff base, N,N’-di(4-decyloxysalicylidene)-1’,8’-diamino-3’,6’-dioxaoctane (H2L) and a series of homo dinuclear lanthanide(III) complexes of the type [Ln2(LH2)3(NO3)4](NO3)2, (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, and Ho) were synthesized ...
Prem Kumar Shrestha, Pawan Raj Shakya
doaj   +1 more source

Polymeric Copper(II) Complexes with a Newly Synthesized Biphenyldicarboxylic Acid Schiff Base Ligand—Synthesis, Structural and Thermal Characterization

Inorganics, 2022
The newly synthesized biphenyldicarboxylic acid Schiff base and its complexes with Cu(II) were synthesized, and their spectroscopic and structural analysis was performed. The reaction of the ligand and copper(II) acetate in different solvents resulted in
Milica G. Bogdanović, Nikola D. Radnović, Berta Barta Holló, Mirjana M. Radanović, Branko B. Kordić, Vidak N. Raičević, Ljiljana S. Vojinović-Ješić, Marko V. Rodić   +7 more
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A designed metal-organic framework based on a metal-organic polyhedron [PDF]

Acta Crystallographica Section A Foundations of Crystallography, 2008
A C(3) symmetric ligand with three 1,3-benzenedicarboxylate units has been used to construct a metal-organic framework with a (3,24)-connected network topology, where the nanometre-sized metal-organic cuboctahedra (MOCs) have been incorporated solely into a cubic close packing (CCP) arrangement, which led to superoctahedral and supertetrahedral ...
Zou, Yang, Park, Mira, Hong, Seunghee, Lah, Myoung Soo   +3 more
openaire   +3 more sources

Crystal structure of (2,4-di-tert-butyl-6-{[(6,6′-dimethyl-2′-oxido-1,1′-biphenyl-2-yl)imino]methyl}phenolato-κ3O,N,O′)bis(propan-2-olato-κO)titanium(IV)

Acta Crystallographica Section E, 2014
In the mononuclear TiIV title complex, [Ti(C29H33NO2)(C3H6O)2], the TiNO4 coordination polyhedron comprises an N-atom and two O-atom donors from the dianionic Schiff base ligand and two O-atom donors from monodentate isopropoxide anions.
Liang Chen, Huiran Wang, Xuebin Deng
doaj   +1 more source