Results 51 to 60 of about 37,684 (309)

Chatter indicator for linear time periodic systems [PDF]

open access: yes, 2022
LAUREA MAGISTRALEIl chatter rigenerativo è uno dei principali fattori limitanti per efficienza e qualità nella fresatura. Si tratta di un fenomeno complesso che può emergere rapidamente a seconda dei parametri di taglio, della dinamica della macchina,
Bekki, Ozan
core  

Large‐Scale Genomics Reveals Three‐Source Ancestry and Layered Adaptation to High Altitude in Tibetan Chickens

open access: yesAdvanced Science, EarlyView.
Whole‐genome analysis of 1,054 chickens reveals three ancestral sources (NWC, SYA, and SHF) with distinct temporal entry patterns into the Tibetan Plateau. Route‐specific selection scans, calibrated against a demographic null, suggest complementary functional enrichments—vascular homeostasis (NWC), calcium signaling and cardiac adaptation (SYA), and ...
Zongyi Zhao   +7 more
wiley   +1 more source

Building cross cultural understandings through e-chatter [PDF]

open access: yes, 2009
The aim of the e-Chatter project was to facilitate the opportunity for Australian teacher education students to be involved in an authentic learning environment with international participants from culturally diverse settings, and for the international ...
N Jumani (13756999)   +1 more
core   +2 more sources

Chatter vibration of workpiece deformation type in cutting thin-walled cylindrical workpiece (Generation mechanism of chatter vibration)

open access: yesNihon Kikai Gakkai ronbunshu, 2020
In aerial industry, to improve the mileage, workpiece such as jet engine turbine case has been lightened and thinned. However, cutting workpiece with thin-walled structure causes vibration called “chatter vibration of workpiece deformation type”. Chatter
Yutaka KURITA   +3 more
doaj   +1 more source

Chatter Detection in Robotic Milling Using Entropy Features

open access: yesApplied Sciences, 2022
Chatter detection in robotic milling is a difficult issue due to the complex dynamic behavior of robots. In this paper, a novel approach to detecting chatter in the robotic milling process is proposed.
Bin Yang, Kai Guo, Jie Sun
doaj   +1 more source

Transferable Deep Reinforcement Learning With Edge‐Contour‐Depth Fusion for Autonomous Wireless Capsule Endoscopy Navigation

open access: yesAdvanced Science, EarlyView.
This study presents an anatomical landmark‐guided DRL framework for autonomous wireless capsule endoscopy navigation. Using a lightweight edge‐contour‐depth fusion module, it achieves over 97% coverage across diverse gastric anatomies. To ensure reliability, a two‐stage sim‐to‐real pipeline with an adaptive dynamic programming controller mitigates ...
Haoxuan Wu   +16 more
wiley   +1 more source

Reform Chatter and Democracy [PDF]

open access: yes, 2020
This paper explores the dynamics of media chatter about economic reforms using text analysis from about a billion newspaper articles in 28 languages. The paper shows that the intensity of reform chatter increases
Ivan Yotzov   +7 more
core   +3 more sources

Cutting Chatter in Ultrasonic Elliptical Vibration Cutting and Its Influence on Surface Roughness and Tool Wear

open access: yesMetals, 2023
Ultrasonic elliptical vibration cutting has a wide range of applications in the field of precision cutting of difficult-to-machine metal materials.
Gan Li   +6 more
doaj   +1 more source

Xenogeneic Mitochondrial Transplantation Improves Selected Age‐Associated Phenotypes in Mice

open access: yesAdvanced Science, EarlyView.
Yak‐derived xenogeneic mitochondrial transplantation improves selected age‐associated phenotypes in mice, enhances mitochondrial functional readouts, and engages host mitochondrial quality‐control pathways. Broad tissue biodistribution, increased ATP production and mtDNA copy number, reduced ROS levels and dysfunctional mitochondria, improved motility ...
Wenpeng Li   +5 more
wiley   +1 more source

Optimisation of variable helix end milling tools [PDF]

open access: yes, 2010
High productivity, low cost and high profits are important issues in aerospace, automotive and tool/die metal manufacturing industries. Machining processes are widely used in manufacturing operations for metal manufacturing rather than casting and ...
Yusoff, Ahmad
core  

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