Results 31 to 40 of about 807,468 (201)
, 2021 In this paper, we prove that for any $k\ge 3$, there exist infinitely many minimal asymmetric $k$-uniform hypergraphs. This is in a striking contrast to $k=2$, where it has been proved recently that there are exactly $18$ minimal asymmetric graphs. We also determine, for every $k\ge 1$, the minimum size of an asymmetric $k$-uniform hypergraph.
Jiang, Yiting, Nešetřil, Jaroslav
openaire +2 more sources
Results in ChemistryIn this study, L-phenylalaninol, synthesized from the reduction of naturally occurring L-phenylalanine, was immobilized on MCM-41. The resulting heterogeneous ligand was comprehensively characterized using various spectroscopic techniques, such as FT-IR,
Saadi Samadi +3 more
doaj +1 more source
Are analysts’ loss functions asymmetric? [PDF]
, 2006 Recent research by Gu and Wu (2003) and Basu and Markov (2004) suggests that the well-known optimism bias in analysts’ earnings forecasts is attributable to analysts minimizing symmetric, linear loss functions when the distribution of forecast errors is ...
Peel, D, Clatworthy, M A, Pope, P F
core +3 more sources
Dynamic Network Connectedness of Bitcoin Markets: Evidence from Realized Volatility
Frontiers in Physics, 2020 In this paper, we explore the volatility spillovers across different Bitcoin markets. We decompose the realized volatility into common and idiosyncratic volatilities, as well as the good and bad volatilities.
Shuanglian Chen, Hao Dong
doaj +1 more source
Design of a Partial Resonant Inverter for solar photovoltaic applications
Automatika, 2021 This paper presents a solar-powered Partial Resonant Inverter (PRI) interfaced with an asymmetrical cascaded nine-level inverter. The DC input of the proposed system is obtained using Solar Photovoltaic (SPV) panel.
C Vidhya, S Muralidharan, V Ravikumar
doaj +1 more source
Review on the Nonlinear Modeling of Hysteresis in Piezoelectric Ceramic Actuators
Actuators, 2023 Piezoelectric ceramic actuators have the advantages of fast response speed and high positioning accuracy and are widely used in micro-machinery, aerospace, precision machining machinery, and other precision positioning fields.
Yingli Dai, Dequan Li, Dong Wang
doaj +1 more source
Energies, 2021 4H-SiC Metal-Oxide-Semiconductor Field Effect Transistors (MOSFETs) with embedded Schottky barrier diodes are widely known to improve switching energy loss by reducing reverse recovery characteristics.
Kyuhyun Cha, Kwangsoo Kim
doaj +1 more source
HeliyonIn this study, a series of chiral amido-oxazoline ligands was synthesized with a primary focus on immobilizing the most effective ligands on MCM-41 mesoporous material.
Niloofar Tavakoli +5 more
doaj +1 more source
Synthesis and spectral characterization of 1,2-bis(5-methyl/chloro-1H-benzimidazol-2-yl)ethanols and their Co(II), Pd(II) and Zn(II) complexes [PDF]
Journal of the Serbian Chemical Society, 2018 1,2-Bis(5-methyl/chloro-1H-benzimidazol-2-yl)ethanols (1 and 2), asymmetric bis-benzimidazoles, and their complexes with CoCl2, PdCl2 and ZnCl2 were synthesized and characterized by elemental analysis, molar conductivity, magnetic moment, TGA, FT-IR (mid-
Tavman Aydin, Gurbuz Demet, Cinarli Adem
doaj +1 more source
Progress in Stereoselective Haloamination of Olefins
MoleculesThe regio- and stereoselective adjacent bifunctionalization of olefins with amine and halogen groups can be effectively accomplished through catalytic haloamination methods.
Guo Zhong, Jiayu Zhou, Bin Cui, Hui Sun
doaj +1 more source