Results 61 to 70 of about 40,447 (267)

Reconfigurable Design and Optimization‐Based Control of an Integrated Leg‐Arm Robot for Space Applications With an Underactuated Body

Advanced Intelligent Systems, EarlyView.
A quadrupedal integrated leg‐arm robot with an underactuated reconfigurable body is developed. By using a Sarrus mechanism as the body, the robot enables reconfiguration through its supporting limbs, achieving mode switching without additional actuators.
Xinghan Zhuang, Kun Xu, Shutao Wu, Haoyuan Liu, Bochao Song, Jiawei Chen, Peijin Zi, Tao Zhang, Xilun Ding   +8 more
wiley   +1 more source

Parametric Study on the Effect of Rail Dampers on Track Decay Rate

Applied Sciences
Track decay rate (TDR), meaning the rate of attenuation of bending waves through the rail, is the most important indicator of a track’s dynamic characteristic impacting the rail noise emission.
Dorina Fologea, Traian Mazilu, Marius-Alin Gheți, Ioana-Izabela Apostol   +3 more
doaj   +1 more source

Characterization and Selection of Contractile Actuators for Soft Robotics Operating in the Quasistatic Regime

Advanced Intelligent Systems, EarlyView.
We developed methods to characterize soft contractile actuators using force–displacement measurements in the passive state and the total force in the active state and define the operational range of thermal, electrothermal, and pneumatic muscles. A graphical method enables the selection of an actuator based on the required mechanical force–displacement
Qiong Wang, Liuyang Cheng, Jeongmin Kim, Samuel Tsai, Devin Roach, Sameh Tawfick   +5 more
wiley   +1 more source

Rail-to-ground Insulation Defect Diagnosis Method Based on Spatiotemporal Correlation of Rail Potential

Chengshi guidao jiaotong yanjiu
Objective The data of various monitoring points regarding rail potential as monitoring object is correlated in time and space, and the direct manifestation of changes in rail-to-rebar structural resistance is reflected in rail potential variation.
Weiguo PAN, Tian LI, Hexiang WU, Xiaopeng HUANG, Wei LIU   +4 more
doaj   +1 more source

Stakeholder Perspectives on Therapeutic and Safe Building Design in Residential Care

Australian Journal of Social Issues, EarlyView.
ABSTRACT Residential care is a form of out‐of‐home care that plays a critical role in supporting vulnerable young people in Australia. However, there is an evidence gap regarding the built environment in this context. This research aimed to explore the perspectives of key stakeholders in residential care in Victoria, Australia, regarding design that ...
Carmen Schroder, Olivia Crivari, Phillippa Carnemolla, Libby Callaway   +3 more
wiley   +1 more source

Scalable ω‐Substituted α‐Olefins via Living Chain Transfer Telomerization: A Platform for Next Generation Polyolefins

Angewandte Chemie International Edition, EarlyView.
A highly versatile and general strategy is presented for the scalable production of practical quantities of ω‐substituted α‐olefins using tris(ω‐substituted alkyl)aluminum telogens that are readily available through a “green” synthesis from commodity triisobutylaluminum and ethene as the taxogen. These new α‐olefins can be designed and used as monomers
Lauren G. Logue, Cole M. Burrows, Vince J. Wedekind, Hyunku C. Kim Jr., Lawrence R. Sita   +4 more
wiley   +1 more source

Parameter influence analysis and optimization of wheel–rail creepage characteristics in high-speed railway curves [PDF]

Railway Sciences
Purpose – To investigate the influence of vehicle operation speed, curve geometry parameters and rail profile parameters on wheel–rail creepage in high-speed railway curves and propose a multi-parameter coordinated optimization strategy to reduce wheel ...
Bolun An, Jiapeng Liu, Guang Yang, Feng shou Liu, Tong Shi, Ming Zhai   +5 more
doaj   +1 more source

Changing a Winning Team—Replacement of Brominated Flame Retardant and Antimony Trioxide in Acrylonitrile–Butadiene–Styrene

Journal of Applied Polymer Science, EarlyView.
This comprehensive study investigates reducing the amount of brominated flame retardant (Br) and/or antimony trioxide (ATO) in acrylonitrile–butadiene–styrene. Therefore, condensed‐phase flame‐retardant mechanisms are introduced into the flame‐inhibition system.
Sebastian M. Goller, Bernhard Schartel, Simone Krüger   +2 more
wiley   +1 more source

The ORCA‐TWIN qCMOS Experiment I. Science Case and Commissioning at Calar Alto Observatory

Astronomische Nachrichten, EarlyView.
ABSTRACT We describe a pilot study to explore a new generation of fast and low noise CMOS image sensors for time domain astronomy, using two remote telescopes with a baseline of 1635 km. The experiment involves direct imaging with novel qCMOS image sensor technology that combines fast readout with sub‐electron readout noise.
Martin M. Roth, Paško Roje, Stella Vješnica, Stefan Cikota, Alex J. Brown, Mike Kretlow, Marco Azzaro, Santiago Reinhart, Jesús Aceituno, Harry Dawson, Carsten Denker, Torsten Enßlin, Stephan Geier, Thomas Granzer, Thomas Kupfer, Gianluca Li Causi, Samaya Nissanke, José Luis Ortiz, Fernando Pedichini, Katja Poppenhäger, Axel Schwope   +20 more
wiley   +1 more source

Analysis on the Performance of New Mountain Gear Rail Train Brake

Chengshi guidao jiaotong yanjiu
Objective The maximum slope of the mountain gear rail line can reach 250‰. As the sliding force generated by the component of the gravity is much greater than the maximum friction force between wheel and rail, relying solely on the conventional wheel and
CUI Yin, LYU Changxiu, XU Hongxing, HUANG Long, LIU Chunyang   +4 more
doaj   +1 more source