Results 131 to 140 of about 35,312 (308)

An experimental investigation of the aerodynamic characteristics of slanted base ogive cylinders using magnetic suspension technology [PDF]

open access: yes
An experimental investigation is reported on slanted base ogive cylinders at zero incidence. The Mach number range is 0.05 to 0.3. All flow disturbances associated with wind tunnel supports are eliminated in this investigation by magnetically suspending ...
Alcorn, Charles W., Britcher, Colin
core   +1 more source

Acoustic driving of rotor [PDF]

open access: yes, 1979
Sound waves are utilized to apply torque to a body in an enclosure of square cross section, by driving two transducers located on perpendicular walls of an enclosure, at the same frequency but at a predetermined phase difference such as 90 degrees.
Kanber, H., Rudnick, I., Wang, T. G.
core   +1 more source

TacEva: A Performance Evaluation Framework for Vision‐Based Tactile Sensors

open access: yesAdvanced Intelligent Systems, EarlyView.
This work introduces TacEva, a unified framework for evaluating vision‐based tactile sensors. It standardizes intrinsic, performance, and robustness metrics through shared experimental procedures and links them to task‐level requirements in robotic manipulation.
Qingzheng Cong   +5 more
wiley   +1 more source

Worm‐Inspired Soft Robots With Modular Outfit‐Changing for Intelligent Multienvironment Adaptation

open access: yesAdvanced Intelligent Systems, EarlyView.
This study proposes a worm‐inspired soft robot capable of locomotion across multiple environments through a modular “outfit‐changing” strategy. The robot integrates pneumatically actuated peristaltic segments with interchangeable external modules, enabling efficient motion on ground surfaces, within pipelines, through granular media, and underwater ...
Xiaomin Liu   +6 more
wiley   +1 more source

Design, Development and Calibration of a Drive Wheel Torque Transducer for an Agricultural Tractor [PDF]

open access: yes, 2003
An appropriate transducer unit for measuring the drive wheel torque of a tractor was designed, developed and calibrated. The unit adopts a design having an extension shaft mounted in between the rear wheel axle flange and rear wheel rim of a tractor ...
Abdelmotalab Fadlelmola, Kheiralla   +3 more
core  

Deep Learning Methods for Assessing Time‐Variant Nonlinear Signatures in Clutter Echoes

open access: yesAdvanced Intelligent Systems, EarlyView.
Motion classification from biosonar echoes in clutter presents a fundamental challenge: extracting structured information from stochastic interference. Deep learning successfully discriminates object speed and direction from bat‐inspired signals, achieving 97% accuracy with frequency‐modulated calls but only 48% with constant‐frequency tones. This work
Ibrahim Eshera   +2 more
wiley   +1 more source

Biocompatibility and healing patterns in experimentally induced canine tibial fractures using Pedicle screw‐Rod external fixation

open access: yesAnimal Models and Experimental Medicine, EarlyView.
This study demonstrates that using a Pedicle screw‐Rod configuration for the external fixation of non‐articular tibial osteotomy aligns well with the principles of biological osteosynthesis, resulting in secondary bone healing characterized by callus formation and neovascularization.
Mohammad Mahdi Gooran   +3 more
wiley   +1 more source

Index to 1981 NASA Tech Briefs, volume 6, numbers 1-4 [PDF]

open access: yes, 1986
Short announcements of new technology derived from the R&D activities of NASA are presented. These briefs emphasize information considered likely to be transferrable across industrial, regional, or disciplinary lines and are issued to encourage ...

core   +1 more source

Acoustofluidic Patterning for Improved Microtissue Histology

open access: yesAdvanced NanoBiomed Research, EarlyView.
Microtissue histology is widely used to characterize microtissue phenotype and morphology. However, conventional microtissue histology workflows are inefficient and time‐consuming. This work introduces a novel embedding technique that uses acoustofluidics to improve the efficiency of microtissue histology and reduce the time required for data analysis.
Dhananjay V. Deshmukh   +13 more
wiley   +1 more source

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