Results 341 to 350 of about 5,474,071 (364)

The nature of mental imagery: How null is the “null hypothesis”?

Behavioral and Brain Sciences, 2002
Is mental imagery pictorial? In Pylyshyn's view no empirical data provides convincing support to the “pictorial” hypothesis of mental imagery. Phenomenology, Pylyshyn says, is deeply deceiving and offers no explanation of why and how mental imagery occurs.
DALLA BARBA, GIANFRANCO, V. Rosenthal, Y.M. . Visetti   +2 more
openaire   +3 more sources

A boundary term for the gravitational action with null boundaries

, 2015
Constructing a well-posed variational principle is a non-trivial issue in general relativity. For spacelike and timelike boundaries, one knows that the addition of the Gibbons–Hawking–York (GHY) counter-term will make the variational principle well ...
Krishnamohan Parattu, S. Chakraborty, B. R. Majhi, B. R. Majhi, T. Padmanabhan   +4 more
semanticscholar   +1 more source

Rings, circles, and null-models for point pattern analysis in ecology

, 2004
A large number of methods for the analysis of point pattern data have been developed in a wide range of scientific fields. First-order statistics describe large-scale variation in the intensity of points in a study region, whereas second-order ...
T. Wiegand, K. Moloney
semanticscholar   +1 more source

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.
openaire   +2 more sources

Testing the null hypothesis of stationarity against the alternative of a unit root: How sure are we that economic time series have a unit root?

, 1992
D. Kwiatkowski, P. Phillips, P. Schmidt, Y. Shin   +3 more
semanticscholar   +1 more source

Null Functions and Null Sets. The Theorem of Fubini

1998
Null functions, i.e. those whose integral is 0 on every set, and null sets, i.e. those whose volume vanishes, are negligible for purposes of integration theory. In particular, countable sets, or lower dimensional subsets of Euclidean spaces are null sets.
openaire   +2 more sources

EcoSim: Null models software for ecology

, 2015
N. Gotelli, G. Entsminger
semanticscholar   +1 more source

The null hypothesis

American Journal of Orthodontics and Dentofacial Orthopedics, 2013
Marcelo Reis Fraga, Marcio José da Silva Campos, Robert Willer Farinazzo Vitral   +2 more
openaire   +3 more sources

A mouse Mecp2-null mutation causes neurological symptoms that mimic Rett syndrome

Nature Genetics, 2001
Jacky Guy, B. Hendrich, M. Holmes, Joanne E. Martin, A. Bird   +4 more
semanticscholar   +1 more source

When is a null cell null?

The Journal of Pediatrics, 1976
openaire   +2 more sources