Results 211 to 220 of about 3,284,414 (262)

Instability Mechanisms in Cooperative Control

IEEE Transactions on Automatic Control, 2008
We consider a motion coordination problem with second order agent dynamics and examine the closed-loop robustness with respect to switching topology, variation of link gain, and unmodeled dynamics. In each case, we illustrate with examples possible instability mechanisms and discuss under what conditions stability is maintained.
He Bai 0001, Murat Arcak
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Mechanisms of chromosome instability in cancers

Critical Reviews in Oncology/Hematology, 2006
Most tumours arise through clonal selection and waves of expansion of a somatic cell that has acquired genetic alterations in essential genes either controlling cell death or cell proliferation. Furthermore, stability of the genome in cancer cells becomes precarious and compromised because several cancer-predisposing mutations affect genes that are ...
Jefford Charles Edward, Irminger-Finger Irmgard   +1 more
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Fluctuations and the Mechanism of Instabilities

2015
info:eu-repo/semantics ...
Prigogine, Ilya, Nicolis, Grégoire
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Thermoelasticity and Mechanical Instabilities

1984
The objectives of these lectures are: To suggest that time is ripe to revisit the whole field of the mechanical behavior of materials. This is a field relevant for its engineering and technological applications as well as for its economical implications: but the conventional approach to it turns out to be inadequate to face the complexity of the ...
BOTTANI, CARLO ENRICO, G. caglioti
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Dynamic instabilities as mechanisms for emergence

Developmental Science, 2006
AbstractThat competences may emerge given appropriate environmental and behavioral context is a long‐standing theme in developmental research. Work in the motor domain, but also in cognitive development, has made it possible to transform this idea into a mechanistic account closely linked to empirical evidence.
Gregor, Schöner, Evelina, Dineva
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Mechanisms of telomeric instability

Cytogenetic and Genome Research, 2008
Telomeres are the nucleoprotein structures that cap the ends of linear chromosomes. The length of telomeric DNA is an important determinant of function; with short telomeres triggering either replicative senescence or, in the absence of a functional DNA damage response, telomere fusion.
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A mechanism for a soft mode instability

Physics Letters A, 1980
no ...
Langford, W. F., Arneodo, A., Coullet, P., Tresser, C., Coste, J.   +4 more
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MECHANICAL INSTABILITIES

2008
Abstract This chapter is focused on mechanical instabilities, which give rise to microstructure pattern formation and eventual failure of stressed solids. Plastic instabilities are described in detail because of their importance in understanding the mechanical behaviour of materials, and because of the strong link between mechanical ...
Nasr M. Ghoniem, Daniel D. Walgraef
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Chromosomal instability—mechanisms and consequences

Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 2015
Chromosomal instability is defined as a state of numerical and/or structural chromosomal anomalies in cells. Numerous studies have documented the incidence of chromosomal instability, which acutely or chronically may lead to accelerated ageing (tissue-wide or even organismal), cancer or other genetic disorders.
Shriram Venkatesan, Adayapalam T. Natarajan, M. Prakash Hande   +2 more
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Fragmentation in the mechanical instability region

Physical Review C, 1986
By means of a cascade model calculation, it is shown that medium mass fragment production in proton-induced reactions very likely proceeds via the breakup of the residual nuclear system rather than coalescence. The reaction trajectory of the excited nuclear system is found to enter the mechanical instability region with S/Aapprox.0.4, well below the ...
, Boal, , Goodman
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