Results 41 to 50 of about 475,497 (278)

MGF-Based Mutual Approximation of Hybrid Fading: Performance of Wireless/Power Line Relaying Communication for IoT

open access: yesSensors, 2019
Wireless and power line communications (PLC) are important components of distribution network communication, and have a broad application prospect in the fields of intelligent power consumption and home Internet of Things (IoT).
Zhixiong Chen   +3 more
doaj   +1 more source

On UAV Selection and Position-Based Throughput Maximization in Multi-UAV Relaying Networks

open access: yesIEEE Access, 2020
Due to flexibility in deployment and high mobility, unmanned aerial vehicles (UAVs) can improve the performance of cellular networks. In this paper, we focus on the UAV-assisted cooperative communication network where multiple UAVs serve as relays ...
Sandeep Kumar Singh   +4 more
doaj   +1 more source

Weakly convex biharmonic hypersurfaces in nonpositive curvature space forms are minimal

open access: yes, 2013
A submanifold $M^m$ of a Euclidean space $R^{m+p}$ is said to have harmonic mean curvature vector field if $\Delta \vec{H}=0$, where $\vec{H}$ is the mean curvature vector field of $M\hookrightarrow R^{m+p}$ and $\Delta$ is the rough Laplacian on $M ...
Luo, Yong
core   +1 more source

On the Gibbs phenomenon for harmonic means [PDF]

open access: yesProceedings of the American Mathematical Society, 1960
1. Let a sequence of functions {fn(x) } converge to a function f(x) for xo f(xo+O), or if lim inf fn(x)
openaire   +2 more sources

Optimal inequalities related to the logarithmic, identric, arithmetic and harmonic means

open access: yesJournal of Numerical Analysis and Approximation Theory, 2010
The logarithmic mean \(L(a,b)\), identric mean \(I(a,b)\), arithmeticmean \(A(a,b)\) and harmonic mean \(H(a,b)\) of two positive real values \(a\) and \(b\) are defined by\begin{align*}\label{main}&L(a,b)=\begin{cases}\tfrac{b-a}{\log b-\log a},& a\neq ...
Wei-feng Xia, Chu Yu-Ming
doaj   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Comparação de critérios de seleção para precocidade de crescimento em bovinos da raça Guzerá Comparison of selection criteria for growth precocity in Guzerat cattle

open access: yesRevista Brasileira de Zootecnia, 2009
Objetivou-se com este estudo comparar a seleção com base no ganho médio diário de peso na pré-desmama (GMD) e no número de dias para ganhar 160 kg nessa fase (D160), com e sem correção para efeitos de grupos de contemporâneos (GC), em bovinos da raça ...
Aila Loise Ribeiro Tanaka   +3 more
doaj   +1 more source

The Biharmonic mean [PDF]

open access: yes, 2016
We briefly describe some well-known means and their properties, focusing on the relationship with integer sequences. In particular, the harmonic numbers, deriving from the harmonic mean, motivate the definition of a new kind of mean that we call the ...
Abrate, Marco   +3 more
core   +1 more source

Ratchet-like dynamics of fluxons in annular Josephson junctions driven by bi-harmonic microwave fields

open access: yes, 2004
Experimental observation of the unidirectional motion of a topological soliton driven by a bi-harmonic ac force of zero mean is reported. The observation is made by measuring the current-voltage characteristics for a fluxon trapped in an annular ...
A. Barone   +6 more
core   +1 more source

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