Results 101 to 110 of about 5,356,527 (332)

Gourd‐Inspired Design of Unit Cell with Multiple Gradients for Physiological‐Range Pressure Sensing

open access: yesAdvanced Functional Materials, EarlyView.
Gourd‐shaped micro‐dome arrays with coordinated modulus, conductivity, and geometric gradients co‐optimize sensitivity and linearity in piezoresistive tactile sensors. Under pressure, a solid upper dome embeds into a porous lower dome, triggering rapid contact‐area growth and series‐to‐parallel conduction, enabling unsaturated, intensity‐resolved ...
Jiayi Xu   +6 more
wiley   +1 more source

Analysis and constraint methods for intra-flow contention in multi-hop paths of wireless mesh networks in mines

open access: yesGong-kuang zidonghua
To address the issue that the multi-hop bandwidth of existing wireless Mesh networks cannot support real-time, high-throughput services such as audio and video in mines, the intra-flow contention mechanism of multi-hop paths in mine wireless Mesh ...
LI Yun
doaj   +1 more source

Adaptive Nonparametric Kernel Density Estimation Approach for Joint Probability Density Function Modeling of Multiple Wind Farms

open access: yesEnergies, 2019
The uncertainty of wind power brings many challenges to the operation and control of power systems, especially for the joint operation of multiple wind farms.
Nan Yang   +6 more
doaj   +1 more source

Optimal Bandwidth Choice for Interval Estimation in GMM Regression [PDF]

open access: yes
In time series regression with nonparametrically autocorrelated errors, it is now standard empirical practice to construct confidence intervals for regression coefficients on the basis of nonparametrically studentized t-statistics.
Peter C.B. Phillips, Yixiao Sun
core  

Prenucleation Species Dictate Foreign Ion Incorporation in the Biomineral Precursor Amorphous Calcium Carbonate

open access: yesAdvanced Functional Materials, EarlyView.
ACC forms via aggregating prenucleation clusters that gatekeep its chemical composition. Ion identity steers the path: Ba and Sr substitute Ca in clusters, thereby inhibiting nucleation, with a dose‐dependent switch of Sr to induction. Mg partitions into Mg‐rich and Mg‐poor clusters; the latter form ACC, expelling Mg.
Qianyu Zhao   +9 more
wiley   +1 more source

Impact of Cladding Tubes in Chalcogenide Negative Curvature Fibers

open access: yesIEEE Photonics Journal, 2016
We computationally study the leakage loss and bandwidth in chalcogenide negative curvature fibers. The leakage loss is decreased by a factor of 19, and the operating bandwidth is almost doubled when the optimal gap between cladding tubes is used in ...
Chengli Wei   +2 more
doaj   +1 more source

An Alternate Construction of an Access-Optimal Regenerating Code with Optimal Sub-Packetization Level

open access: yes, 2015
Given the scale of today's distributed storage systems, the failure of an individual node is a common phenomenon. Various metrics have been proposed to measure the efficacy of the repair of a failed node, such as the amount of data download needed to ...
Agarwal, Gaurav Kumar   +2 more
core  

Molecularly Engineered Highly Stable Memristors with Ultra‐Low Operational Voltage: Integrating Synthetic DNA with Quasi‐2D Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
Molecularly engineered memristors integrating Ag nanoparticle–embedded synthetic DNA with quasi‐2D halide perovskites enable ultra‐low‐operational voltage, forming‐free resistive switching, and record‐low power density. This synergistic integration of customized DNA and 2D OHP in bio‐hybrid architecture enhances charge transport, reduces variability ...
Kavya S. Keremane   +9 more
wiley   +1 more source

Vivaldi Antenna Performance Enhancement for IoT Applications Using Optimal Bandwidth

open access: yesJournal of Techniques
The dual-band microstrip is designed to be compatible with Internet of Things (IoT) applications, Bluetooth, and Wi-Fi standards, ensuring reliable communication for short- and medium-range IoT devices.
Amina Hashim Issa , Mohsen Nickray
doaj   +1 more source

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