Realization of macroscopic ratchet effect based on nonperiodic and uneven potentials [PDF]
Scientific Reports, 2021 Ratchet devices allow turning an ac input signal into a dc output signal. A ratchet device is set by moving particles driven by zero averages forces on asymmetric potentials.
V. Rollano +7 more
doaj +2 more sources
Inner surface of Nepenthes slippery zone: ratchet effect of lunate cells causes anisotropic superhydrophobicity [PDF]
Royal Society Open Science, 2020 Inner surface of Nepenthes slippery zone shows anisotropic superhydrophobic wettability. Here, we investigate what factors cause the anisotropy via sliding angle measurement, morphology/structure observation and model analysis.
Lixin Wang +4 more
doaj +2 more sources
Ratchet effect in veterinary antibiotic use by contract farmers from the perspective of production risk: Implications for public health [PDF]
Frontiers in Public Health, 2022 The current indiscriminate use of antibiotics for veterinary is irresponsible and misguided; it causes antibiotic resistance and adversely affects public health.
Lingzhi Li, Ruiyao Ying
doaj +2 more sources
Young children fail to generate an additive ratchet effect in an open-ended construction task. [PDF]
PLoS ONE, 2018 The ratchet effect-the gradual accumulation of changes within a cultural trait beyond a level that individuals can achieve on their own-arguably rests on two key cognitive abilities: high-fidelity social learning and innovation.
Eva Reindl, Claudio Tennie
doaj +2 more sources
Searching for Ratchet Effects in Agricultural Contracts
Journal of Agricultural and Resource Economics, 1999 In a dynamic contracting environment, increasing standards over time in light of past performance is known as the ratchet effect. Despite the recent theoretical attention given to the ratchet effect, models that include these effects have not been ...
Douglas W. Allen, Dean Lueck
doaj +3 more sources
Capillary Skimming of Floating Microplastics via a Water‐Bridged Ratchet [PDF]
Advanced ScienceFloating microplastics (MPs) have recently become a major concern in marine pollution; however, current filter‐based technology is hardly effective for directly removing such MPs from the water surface because of specific mesh size and clogging issues ...
Seohyun Cho +8 more
doaj +2 more sources
Active Nematics Reinforce the Ratchet Flow in Dense Environments Without Jamming [PDF]
Advanced ScienceThe past decade witnessed a surge in discoveries where biological systems, such as bacteria or living cells, inherently portray active polar or nematic behavior: they prefer to align with each other and form local order during migration.
Yisong Yao +5 more
doaj +2 more sources
Precise mathematical model for the ratchet tooth root bending stress [PDF]
Mechanical Sciences, 2021 A ratchet is an essential component of the ratchet pawl mechanism. But the traditional ratchet strength check method has certain limitations in the design process.
C. Liu +6 more
doaj +1 more source
International Journal of Strategic Property Management, 2022 The performance-based payment PPP model has been widely used in the infrastructure projects. However, the ratchet effect derived from performance-based reputation incentives has been largely overlooked.
Huimin Li +5 more
doaj +3 more sources
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 +2 more
openaire +9 more sources