Results 71 to 80 of about 12,923,099 (288)

A smooth tool path generation and real-time interpolation algorithm based on B-spline curves

Advances in Mechanical Engineering, 2018
In the machining progress of free-form surface, tool path is presented as continuous small line segments. To achieve high machining speed and fine machining quality, the tool path needs to be smoothed.
Shujie Sun, Dong Yu, Changhui Wang, Chuanning Xie   +3 more
doaj   +1 more source

A Blood‐Derived Factor Rescues ALS: Platelet Factor 4 Activates OPTN‐Dependent Autophagy to Clear SOD1 Aggregates Independently of PINK1

Advanced Science, EarlyView.
Systemic platelet factor 4 (PF4) is significantly depleted in amyotrophic lateral sclerosis (ALS). Peripheral PF4 replenishment restores central proteostasis by driving OPTN‐dependent, PINK1‐independent selective autophagy in motor neurons. This intervention effectively clears toxic SOD1 aggregates, blunts glial activation, and preserves neuromuscular ...
Qingjian Xie, Yanbo Zhu, Wenhua Jiang, Haobo Xie, Yaojia Li, Mengjie Hu, Kezheng Li, Huan Yu, Yixuan Pan, Chaoyi Jiang, Xueqin Song, Dongsheng Fan, Binbin Deng   +12 more
wiley   +1 more source

Interpolating Industrial Robot Orientation with Hermite Spline Curve Based on Logarithmic Quaternion

Xibei Gongye Daxue Xuebao, 2019
Smooth orientation planning has an important influence on the working quality and service life as for industrial robot. Based on the logarithmic quaternion, a compact method to map a spline curve from Cartesian space to quaternion space is proposed, and ...

doaj   +1 more source

Navigation with Polytopes: A Toolbox for Optimal Path Planning with Polytope Maps and B-spline Curves. [PDF]

Sensors (Basel), 2023
Nguyen NT, Gangavarapu PT, Kompe NF, Schildbach G, Ernst F.   +4 more
europepmc   +1 more source

Construction of Minkowski Pythagorean hodograph B-spline curves

, 2020
Following and extending the recent results of Albrecht et all. (2017) for planar Pythagorean hodograph (PH) B-spline curves to the Minkowski 3-space, we introduce a class of Minkowski Pythagorean hodograph (MPH) B-spline curves.
Lávička, Miroslav, Bizzarri, Michal
core   +1 more source

EndoTac: An Endoscopic Camera‐Based Tactile Sensor with High Sensitivity for Minimally Invasive Surgery

Advanced Science, EarlyView.
EndoTac presents a trocar‐compatible endoscopic vision‐based tactile sensor that uses a convex mirror to enlarge side‐facing tactile coverage during minimally invasive vessel palpation. Distorted tactile images are unwarped and processed by a learning model to estimate vascular deformation, enabling sensitive, spatially distributed tactile perception ...
Yupeng Wang, Nicolas Raison, Xuyang Zhang, Aijia Yang, Lukas Lindenroth, Shan Luo   +5 more
wiley   +1 more source

Research on trajectory optimization of Delta robot in food production lines based on improved MOEA/D algorithm

Shipin yu jixie
ObjectiveBy optimizing the sorting trajectory of Delta robots, while ensuring sorting accuracy, this paper aims to reduce comprehensive energy consumption, shorten operating time, and minimize operational impact.MethodsBased on the analysis of automated ...
ZHU Hui, ZHAO Shufeng, LI Rucheng, LIU Fei   +3 more
doaj   +1 more source

Neutrosophication of Neutrosophic B-Spline Curve Approximation Model [PDF]

Neutrosophic Sets and Systems
The neutrosophication process involves transforming crisp input value into neutrosophic value. It is a primary and crucial step for the operations within a neutrosophic set and system.
Siti Nur Idara Rosli , Mohammad Izat Emir Zulkifly   +1 more
doaj   +1 more source

Gestational Hypoxia Disrupts Medial Ganglionic Eminence Progenitor Dynamics and Interneuron Development in Schizophrenia

Advanced Science, EarlyView.
FES‐derived MGE spheroids exhibit progenitor‐stage alterations in developmental trajectory and hypoxia‐responsive transcriptional programs, followed by functional disruption. Gestational hypoxia recapitulates impaired progenitor proliferation, shortened cell‐cycle progression, interneuron developmental abnormalities, and schizophrenia‐like behaviors in
Peiyan Ni, Qiancheng Zhang, Youhui Jiang, Huiying Yao, Chuqing Zhou, Xiaoyi Tian, Shiyingnan Gao, Jun Zhao, Xinyi Ren, Naxin Xu, Mengshan Fu, Liansheng Zhao, Xueyu Qi, Xueli Yu, Wanjun Guo, Sangmi Chung, Fan Guo, Tao Li   +17 more
wiley   +1 more source

B-spline-Bézier representation of geometric spline curves: Quartics and quintics [PDF]

, 1992
We present a B-spline-Bézier representation of geometrically continuous quartic and quintic spline curves based on the Bézier representation of these curves described in a foregoing paper of the two authors.
Lasser, Dieter, Eck, Matthias
core   +1 more source