scholarly journals The Neuronal Group Selection Theory: a framework to explain variation in normal motor development

2007 ◽  
Vol 42 (8) ◽  
pp. 566-572 ◽  
Author(s):  
Mijna Hadders-Algra
Keyword(s):  
Motor Development ◽  
Group Selection ◽  
Neuronal Group ◽  
Selection Theory

More on group selection and human behavior

1996 ◽  
Vol 19 (4) ◽  
pp. 782-787 ◽  
Author(s):  
David Sloan Wilson ◽  
Elliott Sober
Keyword(s):  
Human Behavior ◽  
Group Selection ◽  
Relative Fitness ◽  
Group Level ◽  
Selection Theory ◽  
Multi Level ◽  
Predictive Theory

AbstractThe six commentaries raise five issues about multi-level selection theory that we attempt to address: (1) replicators without vehicles, (2) group selection and movement between groups, (3) absolute versus relative fitness, (4) group-level psychological adaptions, and (5) multi-level selection as a predictive theory.

scholarly journals Input Rationality Analysis of Three Degree of freedom Parallel Mechanism with Limbs of Embedding Structures

2019 ◽  
Vol 10 (2) ◽  
pp. 343-353
Author(s):  
Gaowei Yang ◽  
Jianjun Zhang ◽  
Weimin Li ◽  
Kaicheng Qi
Keyword(s):  
Parallel Mechanism ◽  
Group Selection ◽  
Degrees Of Freedom ◽  
Selection Rule ◽  
Direct Application ◽  
Input Selection ◽  
Selection Theory ◽  
Coupling Relationship ◽  
Three Degree Of Freedom ◽  
Three Degrees Of Freedom

Abstract. Three degrees of freedom (3-DoF) parallel mechanism (PM) with limbs of embedding structures is a kind of PM with a coupling relationship between limbs. In order to obtain a more desirable motion, the analysis of its actuated pairs shall be conducted. However, the fact that the existence of limbs coupling results in non-unique limb group, this mechanism has multiple limb groups. In this regard, the traditional input selection theory is not suitable for direct application in the input rationality analysis. Aiming to avoid this, a general extended input selection theory and limb group selection rule are proposed. The former tackles the traditional input selection theory which is not suitable for analyzing the input of PM with limbs of embedding structures since it does not take the influence of group into consideration, whereas the latter makes the calculation of the former easier. Based on the extended input selection theory and the limb group selection rule, the input and configuration of the 3-DoF PM with limbs of embedding structures are improved.

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