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A guide to null models for animal social network analysis

Methods in Ecology and Evolution, 2017
Null models are an important component of the social network analysis toolbox. However, their use in hypothesis testing is still not widespread. Furthermore, several different approaches for constructing null models exist, each with their relative ...
Damien Farine
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Null Flows and Null Functions on $$\mathbb{R}$$

Journal of Dynamics and Differential Equations, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dou, Dou, Huang, Wen, Ye, Xiangdong
openaire   +1 more source

Preparatory activity and the expansive null-space

Nature Reviews Neuroscience
The study of the cortical control of movement experienced a conceptual shift over recent decades, as the basic currency of understanding shifted from single-neuron tuning towards population-level factors and their dynamics.
M. Churchland, K. Shenoy
semanticscholar   +1 more source

On Null Subjects and Null Arguments

Canadian Journal of Linguistics/Revue canadienne de linguistique, 1993
In the literature on Null Subject Languages (NSLs) since Rizzi (1982), the three properties that are commonly thought to be connected are (i) the richness of inflectional morphology, (ii) free subject inversion, and (iii) the COMP-trace effect. The connection between them is that if a language (e.g., Italian) has the option of having a null subject (NS)
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On Null Lagrangians

Mathematica Slovaca, 2015
Abstract We consider Lagrangians for parametric variational problems defined on velocity manifolds and show that a Lagrangian is null precisely when its shadow, a family of vector forms, is closed. We also show that a null Lagrangian can be recovered (to within a constant) from its shadow, and therefore that such a Lagrangian is (again ...
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Spectral-null codes and null spaces of Hadamard submatrices

Designs, Codes and Cryptography, 1994
A code-word \((c_0,\dots,c_{n-1})\) over \(\{-1,+1\}\subseteq\mathbb{R}\) is said to have an \(r\)th order spectral null at zero frequency if \(\sum_{j=0}^{n-1}j^i\cdot c_j=0\) for \(i=0,\dots,{n-1}\). The author considers codes \({\mathcal C}(m,r)\) of length \(2^m\) over \(\{-1,+1\}\) whose codewords have an \(r\)th order spectral null at zero ...
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Null subjects

Parameter Hierarchies and Universal Grammar, 2019
After a brief historical sketch of work on null subjects, and a summary of Barbosa’s proposals concerning the relation between partial and radical null subjects, the chapter presents a typology of null arguments which links their properties directly to ...
I. Roberts
semanticscholar   +1 more source

Explicit nulls with unsafe nulls

Proceedings of the Scala Symposium, 2022
Yaoyu Zhao, Ondrej Lhoták
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Early Null Subjects and Root Null Subjects*

1994
Around the age of 2, children freely drop subjects, irrespective of whether or not the target language is a null subject language. L. Haegeman noticed that the root character of subject drop suggests a topic-drop-type analysis, involving a discourse-bound null operator in the matrix SPEC of C binding a variable in subject position.
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Γ‎-Null and Γ‎N-Null Sets

2012
This chapter introduces the notions of Γ‎-null and Γ‎ₙ-null sets, which are σ‎-ideals of subsets of a Banach space X. Γ‎-null set is key for the strongest known general Fréchet differentiability results in Banach spaces, whereas Γ‎ₙ-null set presents a new, more refined concept.
Joram Lindenstrauss, David Preiss, Tiˇser Jaroslav   +2 more
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