Results 101 to 110 of about 14,305 (291)

Effects of Installation Error on Tooth Surface Contact Characteristic of a Nutation Drive with Double Circular-arc Spiral Bevel Gear

open access: yesJixie chuandong, 2021
The contact characteristics of a nutation drive with double circular-arc spiral bevel gears are extremely sensitive to installation errors. To reveal the effects of installation errors on contact characteristics,the tooth surface contact analysis of ...
Qin Chen   +4 more
doaj  

Adaptive Single-Mode Fiber Coupling Method Based on Coarse-Fine Laser Nutation

open access: yesIEEE Photonics Journal, 2018
One of the major restrictions of the free-space optical communication systems is the limitation of single-mode fiber (SMF) coupling efficiency that impacts the system performance.
Bo Li   +4 more
doaj   +1 more source

A Multimodal Laser‐Induced Graphene‐Based Flexible Sensor for Soft Robotic Hand Environmental Perception

open access: yesAdvanced Intelligent Systems, EarlyView.
A multimodal laser‐induced graphene (LIG)‐based flexible sensor is developed to detect proximity and contact signals. Integrated into a soft robotic hand, it enables vision‐free object searching and grasping. Combined with a convolutional neural network, the system achieves accurate material and texture recognition, enhancing the capability of ...
Youning Duo   +9 more
wiley   +1 more source

Structure and Magnetic Fields in the Precessing Jet System SS 433 II. Intrinsic Brightness of the Jets

open access: yes, 2010
Deep Very Large Array imaging of the binary X-ray source SS 433, sometimes classified as a microquasar, has been used to study the intrinsic brightness distribution and evolution of its radio jets.
Blundell   +19 more
core   +1 more source

Speckle Skin‐Based Multimodal Tactile Perception for Fine Robotic Manipulation

open access: yesAdvanced Intelligent Systems, EarlyView.
SpeckleTac, a miniature vision‐based tactile sensor, utilizes a speckle‐pattern skin and optical flow‐based scalable virtual marker tracking. Combined with advanced algorithms, it achieves high‐resolution 3D surface reconstruction, precise contact perception, and stable grasping capabilities.
Jiayuan Zhang   +6 more
wiley   +1 more source

Resonances Driven by a Neutrino Gyroscope and Collective Neutrino Oscillations in Supernovae

open access: yes, 2011
We show that flavor evolution of a system of neutrinos with continuous energy spectra as in supernovae can be understood in terms of the response of individual neutrino flavor-isospins (NFIS's) to the mean field.
Qian, Yong-Zhong, Wu, Meng-Ru
core   +1 more source

Climate change and perennial crop production: Evidence of yield impact and adaptation in California

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Perennial crops are economically important. They contribute to food security, providing essential nutrients that are often lacking in annual crops, and provide additional environmental benefits compared with annual crops. Despite their importance, empirical research on the impacts of climate change and adaptation on perennial crops remains ...
Yuanyuan Wen   +2 more
wiley   +1 more source

Mass asymmetry and tricyclic wobble motion assessment using automated launch video analysis

open access: yesDefence Technology, 2016
This paper describes an approach to identify epicyclic and tricyclic motion during projectile flight caused by mass asymmetries in spin-stabilized projectiles.
Ryan Decker   +4 more
doaj   +1 more source

Observed and Theoretical Values of the Nutations [PDF]

open access: yesInternational Astronomical Union Colloquium, 1971
We are here concerned with the nutations that appear in the motion of the Earth because of the existence of the external forces due to the Sun and Moon, that is, the forced nutations.We can consider the nutations divided in two groups from the point of view of their values and the precision attained by astronomical observations.
openaire   +1 more source

Implementation of Youth Empowerment Services (YES) juvenile justice diversion program: A first‐person account

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract In Santa Barbara County, the Youth Empowerment Services (YES) Program brought together several government and community‐based organizations, as well as a university‐based evaluation team, to provide pre‐adjudication diversion to youth ages 12 to 17.
Angela Pollard   +7 more
wiley   +1 more source

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