Results 91 to 100 of about 16,549 (235)

Uncertainty, Sensitivity, and Efficiency Analysis of a Hybrid Piezoelectric–Electromagnetic Energy Harvester

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Digitalization and emerging technologies are increasing the demand for wireless sensing and the Internet of Things (IoT), which provide opportunities for autonomous sources of electricity in the form of energy harvesting systems. This paper focuses on the challenges in hybrid piezoelectric‐electromagnetic kinetic energy harvesting systems that
Petr Sosna, Damian Gaska, Zdeněk Hadaš
wiley   +1 more source

On Recursively Directed Hypercubes [PDF]

The Electronic Journal of Combinatorics, 2001
In this paper we introduce the recursively directed hypercubes, and analyze some of their structural properties. We show that every recursively directed hypercube is acyclic, and has a unique pair of source and sink nodes. The main contribution of the paper is an analysis of distances between the nodes in such a graph.
openaire   +2 more sources

Optimal Gain Selection for the Arbitrary‐Order Homogeneous Differentiator

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Differentiation of noisy signals is a relevant and challenging task. Widespread approaches are the linear high‐gain observer acting as a differentiator and Levant's robust exact differentiator with a discontinuous right‐hand side. We consider the family of arbitrary‐order homogeneous differentiators, which includes these special cases.
Benjamin Calmbach, Jaime A. Moreno, Johann Reger   +2 more
wiley   +1 more source

Locally harmonious coloring of variants of hypercubes [PDF]

Mathematics and Computational Sciences
This paper investigates the concept of locally harmonious coloring in the context of high-dimensional interconnection net works, specifically the hypercube Qn, its structural variants such as the folded hypercube FQn, the augmented cube AQn, and the ...
Lenin Muthu Kumaran, Sivaa Manokaran, Arul Amirtha Raja, Santiagu Theresal   +3 more
doaj   +1 more source

A Dual‐Frequency Sensitivity Model for Optical Fibre Ultrasonic Sensors in Power Transformer Partial Discharge Detection

High Voltage, EarlyView.
ABSTRACT The detection of partial discharges (PD) on the power transformer tank demands higher sensitivity in ultrasonic detection. To target the detection frequency band for sensor optimisation and enhance sensitivity, this paper presents a dual‐frequency sensitivity model for optical fibre ultrasonic sensors.
Sihan Wang, Jihang Sun, Jialin Wang, Bin Wei, Guoming Ma   +4 more
wiley   +1 more source

An Improved Fast Computational Method for Vibration Characteristic Analysis of Dry‐Type Iron Core Reactor

High Voltage, EarlyView.
ABSTRACT Structural mechanics field simulation plays a critical role in the vibration characteristic analysis of electrical equipment. Existing structural field analysis of equipment based on numerical simulation faces challenges such as convergence difficulties and prolonged computational time, failing to meet the demand for real‐time prediction of ...
Wanqing Wang, Caibo Liao, Bang Liu, Kai Li, Wenyu Liu, Zhaoguo Li, Xianfa Tian   +6 more
wiley   +1 more source

Rising temperature non‐additively alters how different dimensions of biodiversity affect ecosystem‐scale processes

Journal of Animal Ecology, EarlyView.
The authors distil how dimensions of biodiversity drive ecosystem processes with increasing temperature. Specifically, species physiology more greatly affected ecosystem primary production than did foraging behaviour, and physiology mediated non‐additive interactions with temperature.
Sean Pierce Richards, Maximilian H. K. Hesselbarth, Jacob Edward Allgeier   +2 more
wiley   +1 more source

Can Extensive Grassland Management Pay Off for Farmers Facing Drought Risks? A Cumulative Prospect Theory‐Based Approach

Journal of Agricultural Economics, EarlyView.
ABSTRACT Grasslands in Central Europe are increasingly affected by droughts, leading to lower hay yields and reduced profits for dairy farmers. The insurance hypothesis suggests that extensively managed, species‐rich grassland is more drought resistant than intensively managed grassland.
Julia Kunkel, Jürgen Groeneveld, Robert Finger, Birgit Müller   +3 more
wiley   +1 more source

Unique Games on the Hypercube

Chic. J. Theor. Comput. Sci., 2014
In this paper, we investigate the validity of the Unique Games Conjecture when the constraint graph is the boolean hypercube. We construct an almost optimal integrality gap instance on the Hypercube for the Goemans-Williamson semidefinite program (SDP) for Max-2-LIN$(\mathbb{Z}_2)$.
Naman Agarwal, Guy Kindler, Alexandra Kolla, Luca Trevisan 0001   +3 more
openaire   +4 more sources

Variable electrophysiology before and after block of the two delayed rectifier potassium channels in groups of isolated rabbit ventricular cells

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose Between‐cell differences in ventricular cardiomyocyte action potential duration (APD) and responses to ion channel block may contribute to pro‐arrhythmic dispersion of myocardial repolarisation. This study quantifies between‐cell physiological and pharmacological variability in the rabbit left ventricle (LV) and uses ...
Rebecca J. Gilchrist, Muhamad Hifzhudin Noor Aziz, Francis L. Burton, Radostin D. Simitev, Rachel C. Myles, Godfrey L. Smith   +5 more
wiley   +1 more source