Results 111 to 120 of about 80,977 (277)

Does Online Chatter Really Matter? Dynamics of User-Generated Content and Stock Performance [PDF]

open access: yes, 2011
User-Generated Content in online platforms or chatter for short provides a valuable source of consumer feedback on market performance of firms. This study examines whether chatter can predict stock market performance, which metric of chatter has the ...
Tellis, G.J. (Gerard)   +1 more
core   +1 more source

Effect analysis of bearing and interface dynamics on tool point FRF for chatter stability in machine tools by using a new analytical model for spindle-tool assemblies [PDF]

open access: yes, 2007
Self-excited vibration of the tool, regenerative chatter, can be predicted and eliminated if the stability lobe diagram of the spindle–holder–tool assembly is known.
Budak, Erhan   +4 more
core   +1 more source

Frequency‐Domain Analysis of External Signal Propagation Through Sliding Mode Control Systems With Dynamic Actuators

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT The importance of frequency domain methods in analysis and design of sliding mode (SM) control systems is mostly associated with chattering, where the advantages of these methods over state‐space and Lyapunov's methods are quite obvious.
I. M. Boiko
wiley   +1 more source

Chatter Vibration Monitoring in the Surface Grinding Process through Digital Signal Processing of Acceleration Signal

open access: yesProceedings, 2017
The grinding process is a manufacturing process that is performed at the end of the machining chain. In such step, the workpiece has a high added-value and therefore critical problems are not allowed, as they may lead to scrap and significant financial ...
Felipe Aparecido Alexandre   +5 more
doaj   +1 more source

Improved geneva mechanism [PDF]

open access: yes, 1974
Locking disk (flange) is stepped and lug is added to each arm of star wheel. These changes allow much longer cutout in star wheel stations, essentially eliminating chatter and wear.
Debenham, C. H.
core   +1 more source

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

open access: yesSmartBot, 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   +12 more
wiley   +1 more source

The Trajectory of an Agreement: Tracing Objectivated Knowledge Across a Series of Mundane Encounters

open access: yesSymbolic Interaction, EarlyView.
This article adds to the sociological study of time and temporality in everyday life by building on recent longitudinal developments within conversation analysis. It investigates members' methods to bring about change within their shared (life) world. It examines how, as part of an extended project of action, one agreement made early on is continually ...
Sarah Hitzler, Jonas Kramer
wiley   +1 more source

How to Build a Wind Turbine: Introducing Fourth Graders to Engineering in KidWind Project [PDF]

open access: yes, 2019
With colored construction paper, Styrofoam cups, coffee filters, cereal boxes, empty toilet paper rolls, and straws splayed across the desks, Mrs. McCanna’s fourth grade classroom filled with excited chatter as her students constructed small-scale wind ...
Dell\u27Agnese, Courtney
core   +1 more source

Suitable habitat of Himalayan wolf in Upper Mustang, Annapurna Conservation Area, Nepal

open access: yesWildlife Biology, EarlyView.
Decades ago, the Himalayan wolf Canis lupus chanco, a genetically distinct sub‐species of the gray wolf Canis lupus, faced persecution by local communities in the Nepalese Himalayas. Recently, wolf populations have returned and recolonized, sparking concerns about conflicts over livestock depredation, and emphasizing the urgent need for comprehensive ...
Deu Bahadur Rana   +5 more
wiley   +1 more source

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