Results 81 to 90 of about 147,312 (307)

Reinforcement Learning-Based Locomotion Control for a Lunar Quadruped Robot Considering Space Lubrication Conditions

open access: yesMathematics
Quadruped robots possess strong adaptability to rugged terrain, soft ground, and multi-obstacle environments, offering broad application prospects in extraterrestrial planetary exploration.
Jianfei Li   +4 more
doaj   +1 more source

Unified force-impedance control

open access: yesThe International Journal of Robotics Research
Unified force-impedance control (UFIC) aims at integrating the advantages of impedance control and force control. Compliance and exact force regulation are equally important abilities in modern robot manipulation. The developed passivity-based framework builds on the energy tank concept and is suitable for serial rigid and flexible-joint robots ...
Sami Haddadin, Erfan Shahriari
openaire   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

open access: yesFEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara   +3 more
wiley   +1 more source

A Coplanar Waveguide Approach Using Substrate-Integrated Bridges for Impedance Control, Circuit Miniaturization, Ground Balancing, and Crossover Applications

open access: yesIEEE Access
This paper presents a novel coplanar waveguide (CPW) approach using substrate-integrated bridges for impedance control, circuit miniaturization, ground balancing, and crossover applications.
Amani Cherif   +2 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Adaptive Fractional Hybrid Impedance Control of Rotary Series Elastic Actuator in Flat Terrains

open access: yesAdvanced Intelligent Systems
This study presents a novel control approach, called adaptive fractional hybrid impedance control (AFH‐IC), for rotary series elastic actuators (RSEAs) operating in flat terrains, such as solid floors (hard), carpet (medium), and grass (soft).
Muhammed Özdemir, Zafer Bingül
doaj   +1 more source

Novel Four-Port Diplexer–Antenna System with Simultaneous Isolation Enhancement and Impedance Control

open access: yesJournal of Communications Software and Systems
This paper presents the design and simulation-based performance evaluation of a novel four-port diplexer–antenna system that simultaneously achieves high transmit/receive isola tion and robust impedance control.
Saad Wasmi Osman Luhaib   +2 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Conditioning vs. Excitation Time for Estimating Impedance Parameters of the Human Arm

open access: yes, 2011
The human arm’s capability to alter its impedance has motivated multiple developments of robotic manipulators and control methods. It provides advantages during manipulation such as robustness against external disturbances and task adaptability ...
Florian Petit   +5 more
core   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

open access: yesMolecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce   +11 more
wiley   +1 more source

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