Results 51 to 60 of about 579,977 (276)

Multilevel Generalized Mantel-Haenszel for Differential Item Functioning Detection

Frontiers in Education, 2019
Research has demonstrated that when data are collected in a multilevel framework, standard single level differential item functioning (DIF) analyses can yield incorrect results, particularly inflated Type I error rates.
Brian F. French, W. Holmes Finch, Jason C. Immekus   +2 more
doaj   +1 more source

On logarithmic extensions of local scale-invariance

, 2012
Ageing phenomena far from equilibrium naturally present dynamical scaling and in many situations this may generalised to local scale-invariance. Generically, the absence of time-translation-invariance implies that each scaling operator is characterised ...
Bagchi, Bagchi, Bagchi, Balasubramanian, Bargman, Baumann, Baumann, Baumann, Bray, Cannas, Cherniha, Cugliandolo, Durang, Duval, Fuertes, Godrèche, Godrèche, Hagen, Hassaïne, Hassaïne, Havas, Henkel, Henkel, Henkel, Henkel, Henkel, Henkel, Henkel, Hohenberg, Horváthy, Ivashkevich, Jackiw, Jottar, Kastrup, Leigh, Leigh, Lukierski, Lukierski, Malte Henkel, Martelli, Minic, Negro, Negro, Niederer, Niederer, Ovsiannikov, OʼRaifeartaigh, Picone, Roger, Röthlein, Röthlein, Son, Stoimen Stoimenov, Stoimenov, Stoimenov, Wright, Wright, Wright, Zhang, Zinn-Justin   +59 more
core   +1 more source

Invariant States [PDF]

Transactions of the American Mathematical Society, 1971
States of a C ∗ {C^ \ast } -algebra invariant under the action of a group of automorphisms of the C ∗ {C^ \ast } -algebra are considered. It is shown that “clustering” states in the same part are equal and thus the same is true of extremal ...
openaire   +2 more sources

Input invariants

Proceedings of the 30th ACM Joint European Software Engineering Conference and Symposium on the Foundations of Software Engineering, 2022
How can we generate valid system inputs? Grammar-based fuzzers are highly efficient in producing syntactically valid system inputs. However, programs will often reject inputs that are semantically invalid. We introduce ISLa, a declarative specification language for context-sensitive properties of structured system inputs based on context-free grammars.
Steinhöfel, Dominic, Zeller, Andreas
openaire   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Analysis of the factor structure of the Emotional Fatigue Scale, invariance, and validity based on the relationship with other variables in university professors

Frontiers in Education
The objective of this study is to analyze the evidence of validity, factorial invariance, and reliability of the Emotional Fatigue Scale in Peruvian university professors.
Renzo Felipe Carranza Esteban, Oscar Mamani-Benito, Ronald Castillo-Blanco, Isabel Cabrera-Orosco, Susana K. Lingán-Huamán   +4 more
doaj   +1 more source

Logarithmic correlators or responses in non-relativistic analogues of conformal invariance

, 2013
Recent developments on emergence of logarithmic terms in correlators or response functions of models which exhibit dynamical symmetries analogous to conformal invariance in not necessarily relativistic systems are reviewed. The main examples of these are
Henkel, Malte, Rouhani, Shahin
core   +3 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Invariance in visual object recognition requires training: a computational argument

Frontiers in Neuroscience, 2010
Visual object recognition is remarkably accurate and robust, yet its neurophysiological underpinnings are poorly understood. Single cells in brain regions thought to underlie object recognition code for many stimulus aspects, which poses a limit on their
Robbe L. T Goris, Hans P Op De Beeck
doaj   +1 more source

Breakdown of Conformal Invariance at Strongly Random Critical Points

, 2000
We consider the breakdown of conformal and scale invariance in random systems with strongly random critical points. Extending previous results on one-dimensional systems, we provide an example of a three-dimensional system which has a strongly random ...
A. M. Polyakov, B. L. Altshuler, B. L. Altshuler, B. Shapiro, C. Dasgupta, C. Mudry, D. G. Shelton, D. S. Fisher, D. Slepian, F. J. Dyson, I. I. Kogan, J. Polchinski, K. Efetov, L. Balents, M. B. Hastings, M. C. Wang, M. Janssen, O. Motrunich, P. W. Brouwer, S. L. Sondhi, S. N. Majumdar, T. D. Lee, T. W. Burkhardt, V. Gurarie, Y. G. Sinai   +24 more
core   +1 more source