Results 11 to 20 of about 303,583 (206)

Study on the measurement of buckle pressure of rail elastic strip fastener based on modal method and ultrasonic method

Journal of Low Frequency Noise, Vibration and Active Control
The railway elastic strip fastener system is heavily used in the laying of seamless lines, where the buckle pressure of elastic strip fasteners is an important part of railway safety inspection.
Fan Zhang, Wentao Song, Feifan Chen
doaj   +2 more sources

Verification of the use of Micro-CT scanning to assess the features of entire squat type defects

Wear, 2019
Squats and studs are defects in railheads that share features, but have different causes. This paper examined four squat and stud samples from three different traffic environments to compare features using μ-CT X-ray scans, surface and subsurface ...
Shaun Earl, K. E. Rankin, R. Lewis, L. Smith, W. Rainforth   +4 more
semanticscholar   +1 more source

Perspectives on subnational carbon and climate footprints: A case study of Southampton, UK [PDF]

, 2019
Sub-national governments are increasingly interested in local-level climate change management. Carbon- (CO2 and CH4) and climate-footprints—(Kyoto Basket GHGs) (effectively single impact category LCA metrics, for global warming potential) provide an ...
Osborne, Patrick E., Simon , Kemp, Williams, Ian D., Wright, Laurence A.   +3 more
core   +2 more sources

Kagom{\'e} Lattice Antiferromagnet Stripped to Its Basics

, 1998
We study a model of a spin S = 1/2 Heisenberg antiferromagnet on a one dimensional lattice with the local symmetry of the two dimensional kagom{\'e} lattice.
A. B. Harris, A. B. Zamolodchikov, A. Chubukov, A. M. Tsvelik, A. M. Tsvelik, C. Hooley, C. Lhuillier, C. Zeng, D. Allen, D. G. Shelton, E. H. Rezayi, G. Sierra, I. Affleck, J. T. Chalker, J. T. Chalker, N. Elstner, O. Zachar, P. Azaria, P. Chandra, P. Coleman, P. Coleman, P. Coleman, P. Lecheminant, P. Lecheminant, P. W. Leung, R. R. P. Singh, S. Sachdev, V. J. Emery   +27 more
core   +1 more source

Framing effectiveness in impact assessment: Discourse accommodation in controversial infrastructure development [PDF]

, 2015
There is ongoing debate about the effectiveness of impact assessment tools, which matters both because of the threat to future practice of the tools which are frequently perceived to be ineffective, and because of the disillusionment that can ensue, and ...
Bond, Alan, Rozema, Jaap G.
core   +1 more source

Adaptive Twisting Metamaterials

Advanced Materials, EarlyView.
This work introduces torque‐controlled twisting metamaterials as a transformative platform for adaptive crashworthiness. By combining multiscale predictive modeling with experimental validation on additively manufactured gyroids, it demonstrates tunable stiffness, collapse stress, and energy absorption.
Mattia Utzeri, Maria L. Gatto, Edoardo Mancini, Donato Orlandi, Daniele Cortis, Marco Sasso, Shanmugam Kumar   +6 more
wiley   +1 more source

3D‐Printing Aided Rapid Prototyping of Pretensioned Tensegrity Structures for Robotic Applications

Advanced Robotics Research, EarlyView.
Printing, injection molding, and assembly (PMA) is a method for rapid prototyping mesoscale, topologically complex, and tensioned tensegrity structures. In combination with PMA method, two mold design strategies: modular mold and compact channel layout, enable efficiency and scalability for tensegrity fabrication.
Yi Sun, Jan Petrš, Omar Aloui, Dario Floreano   +3 more
wiley   +1 more source

Horizontal Stabilisation of Sheathed Timber Frame Structures Using Plastic Design Methods – Introducing a Handbook Part 2: Design of Joints and Anchoring Devices

, 2016
In this part 2, the practical design and strength of a number of different joints is described: (1) Sheathing-to-framing joints – the plastic design method is based on the premise that the load-displacement relationship of the sheathing-to-framing joints
U. Girhammar, B. Källsner
semanticscholar   +1 more source

AI‐Enhanced Vibrational Capsule for Minimally Invasive Detection of Abnormal Bowel Tissue

Advanced Science, EarlyView.
A fully integrated vibration‐assisted capsule is presented for the minimally invasive detection of bowel lesions. The capsule incorporates a wireless sensor and an eccentric motor to probe tissue mechanics in situ. By coupling triaxial vibration signals with AI‐based classification and analytical modeling, the system enables early, non‐visual ...
Xizheng Fang, Yao Yan, Kenneth Omokhagbo Afebu, Andrew Bickerdike, Bo Tian, Yang Liu, Shyam Prasad   +6 more
wiley   +1 more source

VAE+DDPG: An Attention‐Enhanced Variational Autoencoder for Deep Reinforcement Learning‐Based Autonomous Navigation in Low‐Light Environments

Advanced Intelligent Systems, EarlyView.
Variational Autoencoder+Deep Deterministic Policy Gradient addresses low‐light failures of infrared depth sensing for indoor robot navigation. Stage 1 pretrains an attention‐enhanced Variational Autoencoder (Convolutional Block Attention Module+Feature Pyramid Network) to map dark depth frames to a well‐lit reconstruction, yielding a 128‐D latent code ...
Uiseok Lee, Chanhong Hwang, Hyunseok Kang, Yechan Park, Hangwoo Jin, Tuan Anh Nguyen, Eunmi Choi, Dugki Min   +7 more
wiley   +1 more source