Results 51 to 60 of about 780 (198)

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

SmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen, Zeyuan Huang, Ying Yan, Xiaokang An, Zhikai Zhao, Jirong Lin, Xiangrong Zhao, Xianyuan Gao, Junyi Zong, Xuewen Jia, Zhipeng Yao, Jianliang Liao, Ning Ji   +12 more
wiley   +1 more source

Reverse engineering strut‐and‐tie models for assessing reinforced concrete structures

Structural Concrete, EarlyView.
Abstract Strut‐and‐tie models enable the design of reinforced concrete structures with static or geometrical discontinuities, providing interpretability and control over the load path. These models are valuable for designing discontinuity regions of new structures and for validating nonlinear finite‐element analysis results. However, developing a strut‐
Karin Yu, Walter Kaufmann
wiley   +1 more source

Rescaling the Developmental State: Competitive Shrinkage Governance and the Spatial Restructuring of Higher Education in South Korea

Asia Pacific Viewpoint, EarlyView.
ABSTRACT Against the backdrop of sustained demographic contraction across the Asia‐Pacific, the developmental state (DS) paradigm, long premised on growth, faces profound challenges. While existing research on shrinking regions focuses on urban planning, little attention has been paid to how the state restructures its spatial power under contraction ...
Li Mingfeng
wiley   +1 more source

On the dynamic analysis of rotating shafts using nonlinear superelement and absolute nodal coordinate formulations

Advances in Mechanical Engineering, 2017
In this article, a superelement formulation and a quadratic beam element based on the absolute nodal coordinate formulation are applied to the simulation of high-speed rotating structures.
Jia Wang, Vesa-Ville Hurskainen, Marko K Matikainen, Jussi Sopanen, Aki Mikkola   +4 more
doaj   +1 more source

Dynamic Analysis and Experiments on the Assembly Control of Planar Deployable Modules

Space: Science & Technology
On-orbit assembly via deployable modules offers a promising solution for constructing large-scale space infrastructure beyond the limitations of launch vehicle volume.
Quanchen Duan, Jialiang Sun, Haiyan Hu
doaj   +1 more source

Mixed Super‐Circles

Computer Graphics Forum, EarlyView.
Abstract We introduce mixed super‐circles, a position‐curvature formulation of the original dynamic 2D super‐helix model. Compared to the latter, purely curvature‐based model – the so‐called chained formulation –, the mixed formulation that we propose here drastically reduces the algorithmic complexity of the solving scheme – from quadratic to quasi ...
Emile Hohnadel, Thibaut Métivet, Florence Bertails‐Descoubes   +2 more
wiley   +1 more source

Dynamics and experiments of a tendon-actuated flexible robotic arm for capturing a floating target

Defence Technology
Reusable and flexible capturing of space debris is highly required in future aerospace technologies. A tendon-actuated flexible robotic arm is therefore proposed for capturing floating targets in this paper.
Xin Xia, Yunpeng Sun, Jialiang Sun
doaj   +1 more source

S1 guideline sweat gland carcinoma

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary The current classification of sweat gland carcinomas is based on histomorphological characteristics and distinguishes between more than 20 entities. Most patients are older, but some subtypes also affect middle‐aged and younger patients. The majority of tumors arise de novo. Sweat gland carcinomas have nonspecific clinical features.
Mirjana Ziemer, Michael Erdmann, Abbas Agaimy, Jürgen C. Becker, Almut Böer‐Auer, Doris Helbig, Cornelia Erfurt‐Berge, Alexander Frisman, Conrad Hempel, Ulrike Leiter, Friedegund Meier, Thomas Mentzel, Lara Racz, Silke Redler, Stefan Schliep, Clemens Seidel, Alpaslan Tasdogan, Jochen Utikal, Carsten Weishaupt, Selma Ugurel   +19 more
wiley   +1 more source

Dynamics and Staged Deployment Strategy for a Spinning Tethered Satellite System

Aerospace
This paper investigates flexible multibody dynamic modeling and a staged deployment strategy for large-scale spinning tethered satellite systems, targeting deployment instability, inefficiencies, and tension-induced fracture risks.
Yue Zhang, Kai Chen, Jiawen Guo, Cheng Wei   +3 more
doaj   +1 more source

A study on motion analysis and control of mechanical systems connected by a cable

Nihon Kikai Gakkai ronbunshu, 2019
Cables connected to mechanical systems enable efficiently power supply to the system and also enable high speed communication even in a poor communication environment.
Takeshi YAMAMOTO, Yoshiki SUGAWARA, Sayako SAKAMA   +2 more
doaj   +1 more source