Results 121 to 130 of about 34,032 (240)
Three‐Way Wideband Filtering Power Dividers With Enhanced Power Dividing Ratio and High Isolation
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.To enhance the large power dividing ratio of a power divider, a three‐line coupled structure and a λ/2 open‐ended stub are introduced between the input port and the power dividing junction, which can greatly reduce the requirement for high impedance in the low‐power path and obtain the filtering performance. Meanwhile, a wideband port‐to‐port isolation
Tai‐lai Zhang +3 more
wiley +1 more source
Journal of Integrative Agriculture, 2019 Mealybugs, such as Phenacoccus solenopsis, are highly sexually dimorphic. Winged adult males present such remarkable morphological differences from females that, to the untrained eye, conspecific adults of both sexes of P. solenopsis may be considered as
Lu-ying ZHENG +8 more
doaj
Hierarchy of general invariants for bivariate LPDOs
, 2005 We study invariants under gauge transformations of linear partial differential operators on two variables. Using results of BK-factorization, we construct hierarchy of general invariants for operators of an arbitrary order.
A. B. Shabat +6 more
core +2 more sources
International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.This study proposed a modified passive islanding technique that combines over/under frequency (OUF), rate of change of frequency (ROCOF), rate of change of phase angle difference (ROCPAD), and rate of change of voltage (ROCOV) for sensing of islanding and nonislanding conditions.
Bemdoo Saka +4 more
wiley +1 more source
Role of Wind and Fear on the Dynamic of a Prey and Two Competing Predators
Journal of Applied Mathematics, Volume 2025, Issue 1, 2025.An essential tool for studying the web is its ability to show how energy moves through an ecosystem. Understanding and elucidating the relationship between species variety and their placement within the inclusive trophic dynamics is also beneficial. A food web ecological model with prey and two rival predators under fear and wind flow conditions is ...
Rasha A. Ali +2 more
wiley +1 more source
Edge Clique Cover of Claw-free Graphs
, 2016 The smallest number of cliques, covering all edges of a graph $ G $, is called the (edge) clique cover number of $ G $ and is denoted by $ cc(G) $. It is an easy observation that for every line graph $ G $ with $ n $ vertices, $cc(G)\leq n $. G.
Hajebi, Sepehr, Javadi, Ramin
core
, 2003 In the present paper we study some neutrino properties as they may appear in the low energy neutrinos emitted in triton decay with maximum neutrino energy of 18.6 keV.
A. Magnon +21 more
core +1 more source
Lie Markov models with purine/pyrimidine symmetry [PDF]
, 2013 Continuous-time Markov chains are a standard tool in phylogenetic inference. If homogeneity is assumed, the chain is formulated by specifying time-independent rates of substitutions between states in the chain.
Fernández-Sánchez, Jesús +3 more
core +2 more sources
Anisotropic Solutions For Orbifold Moduli From Duality Invariant Gaugino Condensates
, 1994 The values of the $T$ and $U$ moduli are studied for those ${\bf Z}_N $ Coxeter orbifolds with the property that some of the twisted sectors have fixed planes for which the six-torus ${\bf T}^6 $ can not be decomposed into a direct sum ${\bf T}^2 ...
Bailin, D. +3 more
core +2 more sources
Type I Outbursts in Low-eccentricity Be/X-Ray Binaries
, 2019 Type I outbursts in Be/X-ray binaries are usually associated with the eccentricity of the binary orbit. The neutron star accretes gas from the outer parts of the decretion disk around the Be star at each periastron passage. However, this mechanism cannot
Franchini, Alessia, Martin, Rebecca G.
core +2 more sources