Results 111 to 120 of about 80,919 (282)

Dynamic tensile strength and fracture evolution of characteristic shale with bedding and hole using linear regression theory

Deep Underground Science and Engineering, EarlyView.
The spiral conical perforations generated during methane in situ explosion fracturing operations lead to tensile fracture propagation in shale reservoirs being governed by the combined effects of impact pressure, bedding, and aperture under explosive loading. Using multiple regression analysis and digital image correlation technology, the mechanisms of
Yabo Chai, Ning Luo, Jianan Zhou, Haohao Zhang, Penglong Li, Yu Wang, Cheng Zhai, Tianran Ma   +7 more
wiley   +1 more source

3D Simulation with virtual stereo rig for optimizing centrifugal fertilizer spreading [PDF]

, 2012
Stereovision can be used to characterize of the fertilizer centrifugal spreading process and to control the spreading fertilizer distribution pattern on the ground reference.
Cointault, Frédéric, Hijazi, Bilal, Paindavoine, Michel, Pieters, Jan, Vangeyte, Jürgen   +4 more
core   +1 more source

Event-Based Stereo Depth Estimation Using Belief Propagation

Frontiers in Neuroscience, 2017
Compared to standard frame-based cameras, biologically-inspired event-based sensors capture visual information with low latency and minimal redundancy. These event-based sensors are also far less prone to motion blur than traditional cameras, and still ...
Zhen Xie, Zhen Xie, Shengyong Chen, Garrick Orchard, Garrick Orchard   +4 more
doaj   +1 more source

The Automated Vestibular Rehabilitation System: Normative Data From a Machine Vision‐Guided Platform

The Laryngoscope, EarlyView.
The Automated Vestibular Rehabilitation System (AVRS) is a machine vision‐based tool designed to increase accessibility to vestibular rehabilitation therapy by automating exercise delivery and tracking head‐eye movements in real time. In n = 40 healthy adults, the AVRS accurately measured vestibulo‐ocular reflex (VOR) gain values near physiologic norms
Erin Williams, Felipe Echeverri Tribin, Luis Rodriguez Diaz, Valerie Yunis, Devin Kennedy, Blaine Ayotte, Christopher McKenna, Odile Clavier, Michael Hoffer   +8 more
wiley   +1 more source

Seabed classification in the Gulf of Alaska from acoustic surveys using deep learning

Limnology and Oceanography: Methods, EarlyView.
Abstract High‐resolution mapping of seafloor habitats has wide applications for fisheries, conservation efforts, offshore infrastructure planning, mineral extraction, and scientific modeling. This study leverages existing widespread single‐beam acoustic data and machine learning to create habitat maps for the Gulf of Alaska at a spatial resolution of ...
Karuna Agarwal, Christopher N. Rooper, Kresimir Williams   +2 more
wiley   +1 more source

Multipath-Closure Calibration of Stereo Camera and 3D LiDAR Combined with Multiple Constraints

Remote Sensing
Stereo cameras can capture the rich image textures of a scene, while LiDAR can obtain accurate 3D coordinates of point clouds of a scene. They complement each other and can achieve comprehensive and accurate environment perception through data fusion ...
Jianqiao Duan, Yuchun Huang, Yuyan Wang, Xi Ye, He Yang   +4 more
doaj   +1 more source

A lightweight clear liquid optical chamber baited remote underwater video system for monitoring fish in turbid coastal wetlands

Limnology and Oceanography: Methods, EarlyView.
Abstract Clear liquid optical chamber baited remote underwater video systems (CLOC‐BRUV) are an effective option for assessing fish assemblages in turbid water, but current designs are limited by their large size and high operational costs. We developed a lightweight CLOC‐BRUV unit and evaluated its performance through proof‐of‐concept trials and field
Hsin‐Wei Huang, Yu‐Jia Lin, Jing‐Ying Wu, Meng‐Hsien Chen   +3 more
wiley   +1 more source

Quantitative Analysis of Locus Coeruleus Neurons and Thalamic Noradrenergic Axons in a Progressive 1‐Methyl‐4‐phenyl‐1,2,3,6‐tetrahydropyridine Monkey Model of Parkinson's Disease

Movement Disorders, EarlyView.
Abstract Background Parkinson's disease is mainly characterized by dopaminergic neurodegeneration in the substantia nigra pars compacta (SNc) and α‐synuclein accumulation. The locus coeruleus (LC) is also affected in Parkinson's disease and linked to some nonmotor symptoms, but the extent and timing of its degeneration remain unclear.
Megan Carrillo, Nagore Hernández‐Pinedo, Josefa Zaldivar‐Diez, Isabel Pérez‐Santos, José A. Obeso, Carmen Cavada, Javier Blesa   +6 more
wiley   +1 more source

Graphic overlays in high-precision teleoperation: Current and future work at JPL [PDF]

In space teleoperation additional problems arise, including signal transmission time delays. These can greatly reduce operator performance. Recent advances in graphics open new possibilities for addressing these and other problems.
Diner, Daniel B., Venema, Steven C.
core   +1 more source

Taxonomic insights into Indian Rotala (Lythraceae) species with verticillate phyllotaxy

Nordic Journal of Botany, EarlyView.
In an effort to resolve taxonomic complexities among Indian Rotala species with verticillate phyllotaxy, this study provides an identification key, revised nomenclature, updated morphological descriptions including SEM studies of seed coat surfaces, detailed photoplates, and notes on phenology, ecology, and distribution.
Arikrishnan Parthiban, Ladan Rasingam, Sandhya Deepika Devara   +2 more
wiley   +1 more source