Results 61 to 70 of about 10,939,833 (368)

Stable Exact Solutions in Cosmological Models with Two Scalar Fields [PDF]

, 2010
The stability of isotropic cosmological solutions for two-field models in the Bianchi I metric is considered. We prove that the sufficient conditions for the Lyapunov stability in the Friedmann-Robertson-Walker metric provide the stability with respect ...
A. A. Starobinsky, A. G. Muslimov, A. G. Riess, A. M. Lyapunov, B. Zwiebach, C. Germani, G. F. R. Ellis, I. Moss, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I. Ya. Aref’eva, I.Ya. Aref’eva, I.Ya. Aref’eva, J. D. Barrow, J. Sadeghi, J. Wainwright, K. Ohmori, L. Bianchi, N. V. Bulatov, O. DeWolfe, P. J. Steinhardt, R. Lazkoz, R. Lazkoz, R. M. Wald, S. Nesseris, S. W. Hawking, S. Weinberg, S. Yu. Vernov, S. Yu. Vernov, T. S. Pereira, U. Alam, Z.-K. Guo, Z.-K. Guo   +40 more
core   +1 more source

Monetary Policy Rules and Macroeconomic Stability: Evidence and Some Theory

, 1998
We estimate a forward-looking monetary policy reaction function for the postwar United States economy, before and after Volcker’s appointment as Fed Chairman in 1979. Our results point to substantial differences in the estimated rule across periods.
Richard Clarida, J. Gaĺı, M. Gertler
semanticscholar   +1 more source

Centromere protection requires strict mitotic inactivation of the Bloom syndrome helicase complex

Nature Communications
The BTRR (BLM/TOP3A/RMI1/RMI2) complex resolves DNA replication and recombination intermediates to maintain genome stability. Alongside PICH, they target mitotic DNA intertwinements, known as ultrafine DNA bridges, facilitating chromosome segregation ...
María Fernández-Casañas, Eleftheria Karanika, Umit Aliyaskarova, Tomisin Olukoga, Alex D. Herbert, Antony W. Oliver, Matthew Day, Adrijana Crncec, Kok-Lung Chan   +8 more
doaj   +1 more source

Stability is not open [PDF]

, 2009
We give an example of a symplectic manifold with a stable hypersurface such that nearby hypersurfaces are typically unstable.Comment: 9 ...
Gabriel, Kai Cieliebak, P. Paternain, Urs Frauenfelder   +3 more
core   +4 more sources

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

Population Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Stability

Bernoulli, 2013
Reproducibility is imperative for any scientific discovery. More often than not, modern scientific findings rely on statistical analysis of high-dimensional data. At a minimum, reproducibility manifests itself in stability of statistical results relative to "reasonable" perturbations to data and to the model used.
openaire   +5 more sources

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Stability Parameters for Comparing Varieties

, 1966
The model, Yij = μ1 + β1Ij + δij, defines stability parameters that may be used to describe the performance of a variety over a series of environments. Yij is the variety mean of the ith variety at the jth environment, µ1 is the ith variety mean over all
S. Eberhart, W. Russell
semanticscholar   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

BAF180 Promotes Cohesion and Prevents Genome Instability and Aneuploidy

Cell Reports, 2014
BAF180, a subunit of the PBAF chromatin remodeling complex, is frequently mutated in cancer. Although PBAF regulates transcription, it remains unclear whether this is what drives tumorigenesis in cells lacking BAF180.
Peter M. Brownlee, Anna L. Chambers, Ross Cloney, Alessandro Bianchi, Jessica A. Downs   +4 more
doaj   +1 more source