Results 41 to 50 of about 151 (144)

Competition and the Ratchet Effect [PDF]

SSRN Electronic Journal, 2008
In labor markets, the ratchet effect refers to a situation where workers subject to performance pay choose to restrict their output, because they rationally anticipate that firms will respond to higher output levels by raising output requirements or by cutting pay.
Charness, Gary, Kuhn, Peter, Villeval, Marie Claire   +2 more
openaire   +8 more sources

Evolution of Physical Intelligence Across Scales

Advanced Intelligent Discovery, EarlyView.
By following the evolution of physical intelligence across scales, this article shows how intelligence arises from materials, structures, physical interactions, and collectives. It establishes physical intelligence as the evolutionary foundation upon which embodied intelligence is built.
Ke Liu, Tianyun Huang, Aming Li, Pengyu Lv, Tingting Qin, Wenhui Chen, Hui Wei, Huiling Duan   +7 more
wiley   +1 more source

Ratchet Cellular Automata [PDF]

Physical Review Letters, 2003
In this work we propose a ratchet effect which provides a general means of performing clocked logic operations on discrete particles, such as single electrons or vortices. The states are propagated through the device by the use of an applied AC drive. We numerically demonstrate that a complete logic architecture is realizable using this ratchet.
Hastings, M. B., Reichhardt, C. J. Olson, Reichhardt, C.   +2 more
openaire   +3 more sources

Rolling Contact Fatigue Life of Rail for Different Slip Conditions

Latin American Journal of Solids and Structures
A three-dimensional elastic-plastic finite element analysis (FEA) is carried out to estimate the rolling contact fatigue (RCF) crack initiation life for varied slip range on the rail arising from operational variations.
Jay Prakash Srivastava, Prabir Kumar Sarkar, V R Kiran Meesala, Vinayak Ranjan   +3 more
doaj   +1 more source

Information in feedback ratchets

Physical Review E, 2023
Feedback control uses the state information of the system to actuate on it. The information used implies an effective entropy reduction of the controlled system, potentially increasing its performance. How to compute this entropy reduction has been formally shown for a general system, and has been explicitly computed for spatially discrete systems ...
Natalia Ruiz-Pino, Daniel Villarrubia-Moreno, Antonio Prados, Francisco J. Cao-García   +3 more
openaire   +6 more sources

Propulsion on a superhydrophobic ratchet [PDF]

Scientific Reports, 2014
Liquids in the Leidenfrost state were shown by Linke to self-propel if placed on ratchets. The vapour flow below the liquid rectified by the asymmetric teeth entrains levitating drops by viscosity. This effect is observed above the Leidenfrost temperature of the substrate, typically 200°C for water.
Dupeux, Guillaume, Bourrianne, Philippe, Magdelaine, Quentin, Clanet, Christophe, Quéré, David   +4 more
openaire   +4 more sources

Bacterial ratchet motors [PDF]

Proceedings of the National Academy of Sciences, 2010
Self-propelling bacteria are a nanotechnology dream. These unicellular organisms are not just capable of living and reproducing, but they can swim very efficiently, sense the environment, and look for food, all packaged in a body measuring a few microns.
DI LEONARDO, ROBERTO, ANGELANI, Luca, D. Dell'Arciprete, RUOCCO, Giancarlo, IEBBA, VALERIO, SCHIPPA, Serena, CONTE, Maria Pia, F. Mecarini, F. De Angelis, E. Di Fabrizio   +9 more
openaire   +5 more sources

Local Search and the Evolution of World Models

Topics in Cognitive Science, EarlyView., 2023
Abstract An open question regarding how people develop their models of the world is how new candidates are generated for consideration out of infinitely many possibilities. We discuss the role that evolutionary mechanisms play in this process. Specifically, we argue that when it comes to developing a global world model, innovation is necessarily ...
Neil R. Bramley, Bonan Zhao, Tadeg Quillien, Christopher G. Lucas   +3 more
wiley   +1 more source

An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)

The Anatomical Record, EarlyView.
Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley   +1 more source

Reporting What Matters, or Reporting What Looks Good? Materiality and Balance in Post–Rana Plaza Apparel Sustainability Disclosure

Business Strategy and the Environment, EarlyView.
ABSTRACT Sustainability reports (SRs) are widely criticized for vague disclosures and selective emphasis on positive outcomes, yet systematic research on two core SR challenges remains limited: materiality (whether disclosed content is relevant) and balance (whether both achievements and challenges are reported).
Mahsa Mohammadrezaei, José Carlos Marques   +1 more
wiley   +1 more source