Results 121 to 130 of about 177,847 (331)

Wind measurements by parachute [PDF]

open access: yes
Tests used the 8 cm Lotta grenade as well as 12 cm M/70 and 10.5 m/62 grenades, released at altitudes between 2000 and 6400 meters. The parachutes were tracked by AP and RFK.
Nordstroem, S.
core   +1 more source

Exploring the application of ferroelectret nanogenerators in medical engineering

open access: yesFlexMat, EarlyView.
Abstract Flexible devices derived from piezoelectric materials have gained considerable attention due to their exceptional biocompatibility. Among these, ferroelectret nanogenerators (FENG) is a novel type of flexible piezoelectric device that integrates self‐powering, actuation, and sensing capabilities.
Xianfa Cai   +4 more
wiley   +1 more source

Radar nonlinear multi-target tracking method with parallel PHD filter

open access: yesScientific Reports
Since probability hypothesis density (PHD) filters do not need explicit data association, they have recently been widely used in radar multi-target tracking (MTT). However, in existing PHD filters, sampling times are generally considered the same for all
Jin Tao   +5 more
doaj   +1 more source

Investigation of new radar-data-reduction techniques used to determine drag characteristics of a free-flight vehicle [PDF]

open access: yes
An investigation was conducted of new techniques used to determine the complete transonic drag characteristics of a series of free-flight drop-test models using principally radar tracking data.
Wallace, J. W., Woodbury, G. E.
core   +1 more source

Single‐cell sequencing reveals the role of IL‐33+ endothelial subsets in promoting early gastric cancer progression

open access: yesiMeta, EarlyView.
A single‐cell atlas was established to reveal the molecular characteristics of early gastric cancer (EGC). In combination with organoids, animal models, and clinical samples, it was found that subpopulations such as pit mucous‐like cell (PMC‐like), proliferating cell (PC), CH25H+ CD4+ T cell, IL‐33+ endothelial cell, and ADAMTSL2+ endothelial cell are ...
Li Zhou   +15 more
wiley   +1 more source

Considering spatiotemporal evolutionary information in dynamic multi‐objective optimisation

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract Preserving population diversity and providing knowledge, which are two core tasks in the dynamic multi‐objective optimisation (DMO), are challenging since the sampling space is time‐ and space‐varying. Therefore, the spatiotemporal property of evolutionary information needs to be considered in the DMO.
Qinqin Fan   +3 more
wiley   +1 more source

Correlation of photogeology and remote sensing data along the Apollo 14 Bistatic-Radar ground track; Part I, A working compendium [PDF]

open access: bronze, 1975
Henry J. Moore   +8 more
openalex   +1 more source

Radar and video as the perfect match : a cooperative method for sensor fusion [PDF]

open access: yes, 2019
Accurate detection and tracking of road users is essential for driverless cars and many other smart mobility applications. As no single sensor can provide the required accuracy and robustness, the output from several sensors needs to be combined ...
Allebosch, Gianni   +3 more
core  

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