Results 171 to 180 of about 29,056 (316)

Single Smooth Waveform Command‐Shaping Control of Overhead Crane Systems Utilizing Two‐Stage Acceleration–Deceleration Profile for Short‐Moving Point‐to‐Point Maneuver

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern industrial demand for efficient material handling in confined spaces has driven the need for overhead cranes capable of short‐distance point‐to‐point maneuvers without compromising payload stability. Conventional three‐stage shaper profiles, experiencing acceleration, cruising, and deceleration, become inefficient or infeasible for ...
Mohammed Alfares   +2 more
wiley   +1 more source

A gravitational-wave standard siren measurement of the Hubble constant

open access: yes, 2017
On 17 August 2017, the Advanced LIGO1 and Virgo2 detectorsobserved the gravitational-wave event GW170817—a strong signalfrom the merger of a binary neutron-star system3.
The LIGO Scientific Collaboration and The Virgo Collaboration etal   +2 more
core  

A Passive Low‐Frequency, High‐Sensitivity Diamagnetic Levitation Accelerometer

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Despite the great potential of diamagnetic levitation accelerometers in detecting low‐frequency and weak motion, there is still a demand to further enhance their sensitivity for geophysical and microgravity applications. In this study, a straightforward structural modulating approach is presented to enhance the sensitivity of diamagnetic ...
Yuanping Xu   +5 more
wiley   +1 more source

Implementation of an F -statistic all-sky search for continuous gravitational waves in Virgo VSR1 data

open access: yes, 2014
We present an implementation of the -statistic to carry out the first search in data from the Virgo laser interferometric gravitational wave detector for periodic gravitational waves from a priori unknown, isolated rotating neutron stars.
김남규   +4 more
core  

Experimental Investigation of Moisture Movement During Freeze–Thaw Cycles and Its Effect on Physical Rock Weathering in Low‐Porosity Alpine Limestone

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT The progressive weakening of alpine rockwalls through subcritical cracking, driven by repeated low‐magnitude stress processes, plays a key role in alpine rock weathering. Laboratory studies using acoustic emission (AE) monitoring have shown that thermal stresses from freeze–thaw cycling induce crack propagation, with recent work highlighting ...
Andrew Mitchell, Oliver Sass
wiley   +1 more source

Early Warning for Lensed Gravitational Wave Counterparts from Time Delays of Their Host Galaxies Observed in the Optical

open access: yesThe Astrophysical Journal
Gravitational lensing of gravitational waves can be leveraged to provide early-warning times of ${ \mathcal O }({\rm{hours}})$ to ${ \mathcal O }({\rm{days}})$ before the merger of binary neutron stars (BNSs) and neutron star black holes (NSBHs). This in
Sourabh Magare   +2 more
doaj   +1 more source

“Cold Tropics”: Permafrost Existence and Thickness on Eastern Nevado Coropuna (Southern Peruvian Andes) Revealed by Ground‐Penetrating Radar and Geoelectrical Soundings

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT The existence of permafrost was explored at tropical latitude on Nevado Coropuna (southern Peruvian Andes) using a combination of ground‐penetrating radar (GPR) and vertical electrical sounding (VES) in order to strengthen the mutual validation of data processing and interpretation.
Velnia Chacca   +6 more
wiley   +1 more source

Epistemic diversity and the politics of knowledge in plant disease management: Insights from the Xylella fastidiosa epidemic in southern Italy

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Xylella fastidiosa is a major plant pathogen affecting crops such as grapes, citrus, almonds, and olives, with potentially severe consequences for agricultural production and rural livelihoods worldwide. This paper examines the conflict around the management of the X. fastidiosa outbreak affecting olive trees in southern Italy.
Fabio Gatti   +2 more
wiley   +1 more source

All-sky search for periodic gravitational waves in the O1 LIGO data

open access: yes, 2017
We report on an all-sky search for periodic gravitational waves in the frequency band 20–475 Hz andwith a frequency time derivative in the range of (−1.0, +0.1) × 10−8 Hz=s. Such a signal could be producedby a nearby spinning and slightly nonaxisymmetric 
LIGO Scientific Collaboration and Virgo Collaboration   +2 more
core  

The non‐hydrostatic option of the ECMWF global weather forecast model: Improvements for kilometre‐scale modelling

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
This study presents improvements to the non‐hydrostatic version of the European Centre for Medium‐Range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS), enabling stable global simulations at 1.4‐km resolution. A systematic comparison with the hydrostatic version at resolutions from 9 to 1.4 km shows that non‐hydrostatic effects emerge in ...
Jozef Vivoda   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy