Results 61 to 70 of about 127,844 (312)

Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement

open access: yesApplied Sciences, 2020
High reliability is the basic requirement of aerospace pyrotechnic devices. Traditional reliability evaluation methods require a lot of tests, which become too expensive; therefore, the small-sample evaluation method is needed to reduce the cost.
Yubo Zhu   +3 more
doaj   +1 more source

FSD-BRIEF: A Distorted BRIEF Descriptor for Fisheye Image Based on Spherical Perspective Model

open access: yesSensors, 2021
Fisheye images with a far larger Field of View (FOV) have severe radial distortion, with the result that the associated image feature matching process cannot achieve the best performance if the traditional feature descriptors are used.
Yutong Zhang   +4 more
doaj   +1 more source

Drive: Dynamic Routing of Independent Vehicles [PDF]

open access: yesOperations Research, 1998
We present DRIVE (Dynamic Routing of Independent VEhicles), a planning module to be incorporated in a decision support system for the direct transportation at Van Gend and Loos BV. Van Gend and Loos BV is the largest company providing road transportation in the Benelux, with about 1400 vehicles transporting 160,000 packages from thousands of senders ...
Martin W. P. Savelsbergh, Marc Sol
openaire   +2 more sources

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

open access: yesFEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento   +6 more
wiley   +1 more source

High speed driving stability of road vehicles under crosswinds: an aerodynamic and vehicle dynamic parametric sensitivity analysis [PDF]

open access: yes, 2022
Crosswinds affect vehicle driving stability and their influence increase with driving speed. To improve high speed driving stability, interdisciplinary research using unsteady aerodynamics and vehicle dynamics is necessary.
Brandt, Adam,   +5 more
core   +1 more source

Fault‐Tolerant Robust Output‐Feedback Control of a Vehicle Platoon Considering Measurement Noise and Road Disturbances

open access: yesIET Intelligent Transport Systems
As electric vehicle (EV) technology advances, platooning has emerged as a promising strategy to enhance energy efficiency and traffic flow. However, the effective deployment of EV platoons is challenged by the heterogeneous nature of vehicles ...
Fernando Viadero‐Monasterio   +3 more
doaj   +1 more source

Sound reduction by metamaterial-based acoustic enclosure

open access: yesAIP Advances, 2014
In many practical systems, acoustic radiation control on noise sources contained within a finite volume by an acoustic enclosure is of great importance, but difficult to be accomplished at low frequencies due to the enhanced acoustic-structure ...
Shanshan Yao   +3 more
doaj   +1 more source

Dynamic Modeling and Analysis of Nonlinear Compound Planetary System

open access: yesMachines, 2022
In the vehicle composite planetary gear transmission system, nonlinear excitations such as time-varying meshing stiffness, backlash and comprehensive error would lead to large vibration and noise, uneven load distribution, unstable operation and other ...
Tingqiong Cui   +3 more
doaj   +1 more source

Pharmacological inhibition of the PERK pathway modulates hepatocellular carcinoma growth and immune signaling

open access: yesFEBS Open Bio, EarlyView.
Pharmacological inhibition of PERK in a DEN‐induced mouse model of liver cancer does not reduce tumor burden but alters cellular stress signaling. Despite blocking PERK activity, downstream stress responses, including CHOP expression, remain active, suggesting compensatory mechanisms within the unfolded protein response that may influence tumor ...
Ada Lerma‐Clavero   +5 more
wiley   +1 more source

Intrinsic Optimal Control for Mechanical Systems on Lie Group

open access: yesAdvances in Mathematical Physics, 2017
The intrinsic infinite horizon optimal control problem of mechanical systems on Lie group is investigated. The geometric optimal control problem is built on the intrinsic coordinate-free model, which is provided with Levi-Civita connection.
Chao Liu, Shengjing Tang, Jie Guo
doaj   +1 more source

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