The Ratchet Effect: Theory and Empirical Evidence

2020 ◽  
Author(s):  
Matthias D. Mahlendorf ◽  
Michal Matejka ◽  
Utz Schäffer
Keyword(s):  
Empirical Evidence ◽  
Ratchet Effect ◽  
Effect Theory

Stress–Strain Assessments for Buried Oil Pipelines Under Freeze-Thaw Cyclic Conditions

2021 ◽  
Vol 143 (4) ◽  
Author(s):  
Zhen-Chao Teng ◽  
Xiao-Yan Liu ◽  
Yu Liu ◽  
Yu-Xiang Zhao ◽  
Kai-Qi Liu ◽  
...  
Keyword(s):  
Frozen Soil ◽  
Ratchet Effect ◽  
Frost Heaving ◽  
Soil Frost ◽  
Oil Pipeline ◽  
Freeze Thaw ◽  
Thaw Cycle ◽  
Oil Pipelines ◽  
Freeze Thaw Cycle ◽  
Effect Theory

Abstract In this study, outdoor freeze-thaw cyclic tests on the Q345 steel pipeline portion were conducted to analyze the buried oil pipeline stress evolution in a seasonally frozen soil area, namely, the Mohe–Daqing portion of China–Russia crude oil pipeline. The results obtained show that under the freeze-thaw cycle, the variation trend of soil temperature around the pipeline exhibited a hysteresis pattern, which was similar to that of atmospheric temperatures. The soil frost heaving force was shown to drop with depth, and its value at the pipe top was higher than that at the pipe bottom. With the number of freeze-thaw cycles, the frost heaving force of the soil first increased and finally stabilized, while the principal stress of the pipeline increased gradually, and its extreme value tended to be stable after 7–8 cycles, which was consistent with the “ratchet effect” theory. The above findings made it possible to elaborate on a more efficient freeze-thaw cyclic test setup for clarifying the mechanism of frozen soil/pipeline interactions.

Challenges to the social motivation theory of autism: The dangers of counteracting an imprecise theory with even more imprecision

2019 ◽  
Vol 42 ◽  
Author(s):  
Mirko Uljarević ◽  
Giacomo Vivanti ◽  
Susan R. Leekam ◽  
Antonio Y. Hardan
Keyword(s):  
Empirical Evidence ◽  
Social Motivation ◽  
Motivation Theory ◽  
The Social

Abstract The arguments offered by Jaswal & Akhtar to counter the social motivation theory (SMT) do not appear to be directly related to the SMT tenets and predictions, seem to not be empirically testable, and are inconsistent with empirical evidence. To evaluate the merits and shortcomings of the SMT and identify scientifically testable alternatives, advances are needed on the conceptualization and operationalization of social motivation across diagnostic boundaries.

Integrating perspectives: How the development of second-personal competence lays the foundation for a second-personal morality

2020 ◽  
Vol 43 ◽  
Author(s):  
John Corbit ◽  
Chris Moore
Keyword(s):  
Empirical Evidence ◽  
Developmental Process ◽  
Focal Point ◽  
Personal Information ◽  
Personal Competence ◽  
Triadic Interactions ◽  
Personal Morality ◽  
Integrative Process

Abstract The integration of first-, second-, and third-personal information within joint intentional collaboration provides the foundation for broad-based second-personal morality. We offer two additions to this framework: a description of the developmental process through which second-personal competence emerges from early triadic interactions, and empirical evidence that collaboration with a concrete goal may provide an essential focal point for this integrative process.

Men Are Hierarchical, Women Are Egalitarian: An Implicit Gender Stereotype

2004 ◽  
Vol 63 (2) ◽  
pp. 107-111 ◽  
Author(s):  
Marianne Schmid Mast
Keyword(s):  
Empirical Evidence ◽  
Implicit Association Test ◽  
Gender Stereotype ◽  
Association Test ◽  
Implicit Association ◽  
Two Samples

The goal of the present study was to provide empirical evidence for the existence of an implicit hierarchy gender stereotype indicating that men are more readily associated with hierarchies and women are more readily associated with egalitarian structures. To measure the implicit hierarchy gender stereotype, the Implicit Association Test (IAT, Greenwald et al., 1998) was used. Two samples of undergraduates (Sample 1: 41 females, 22 males; Sample 2: 35 females, 37 males) completed a newly developed paper-based hierarchy-gender IAT. Results showed that there was an implicit hierarchy gender stereotype: the association between male and hierarchical and between female and egalitarian was stronger than the association between female and hierarchical and between male and egalitarian. Additionally, men had a more pronounced implicit hierarchy gender stereotype than women.

Socially Shared Regulation of Learning: A Review

2015 ◽  
Vol 20 (3) ◽  
pp. 190-203 ◽  
Author(s):  
Ernesto Panadero ◽  
Sanna Järvelä
Keyword(s):  
Empirical Evidence ◽  
Learning Theory ◽  
Qualitative Data ◽  
Social Regulation ◽  
Observation Data ◽  
Optimal Form ◽  
Self Regulated Learning ◽  
The Past ◽  
Recorded Observation ◽  
Socially Shared Regulation

Abstract. Socially shared regulation of learning (SSRL) has been recognized as a new and growing field in the framework of self-regulated learning theory in the past decade. In the present review, we examine the empirical evidence to support such a phenomenon. A total of 17 articles addressing SSRL were identified, 13 of which presented empirical evidence. Through a narrative review it could be concluded that there is enough data to maintain the existence of SSRL in comparison to other social regulation (e.g., co-regulation). It was found that most of the SSRL research has focused on characterizing phenomena through the use of mixed methods through qualitative data, mostly video-recorded observation data. Also, SSRL seems to contribute to students’ performance. Finally, the article discusses the need for the field to move forward, exploring the best conditions to promote SSRL, clarifying whether SSRL is always the optimal form of collaboration, and identifying more aspects of groups’ characteristics.

Neuroscience and Ethics

2017 ◽  
Vol 64 (2) ◽  
pp. 82-92 ◽  
Author(s):  
S. Matthew Liao
Keyword(s):  
Empirical Evidence ◽  
Moral Judgments ◽  
Empirical Results ◽  
Joshua Greene

Abstract. A number of people believe that results from neuroscience have the potential to settle seemingly intractable debates concerning the nature, practice, and reliability of moral judgments. In particular, Joshua Greene has argued that evidence from neuroscience can be used to advance the long-standing debate between consequentialism and deontology. This paper first argues that charitably interpreted, Greene’s neuroscientific evidence can contribute to substantive ethical discussions by being part of an epistemic debunking argument. It then argues that taken as an epistemic debunking argument, Greene’s argument falls short in undermining deontological judgments. Lastly, it proposes that accepting Greene’s methodology at face value, neuroimaging results may in fact call into question the reliability of consequentialist judgments. The upshot is that Greene’s empirical results do not undermine deontology and that Greene’s project points toward a way by which empirical evidence such as neuroscientific evidence can play a role in normative debates.

Empirical Evidence About Legal Evidence

1982 ◽  
Vol 27 (7) ◽  
pp. 535-536
Author(s):  
Lawrence S. Wrightsman
Keyword(s):  
Empirical Evidence ◽  
Legal Evidence
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