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Model reproduces systems with aging-dependent relaxationspnas;109/6/1809/UNFIG01F1unfig01Electrons hopping in an electron glass.Researchers commonly use simple exponential functions to describe how physical systems decay to an equilibrium state. But in some cases, such as when a stretched rubber band is released or an electrical current decays in a superconductor, relaxations occur slowly and follow logarithmic trajectories that depend on how long the material was sustained in the initial perturbed state. In Yoseph Imry's inaugural article, Ariel Amir et al. (pp. 1850–1855) discuss generic physical mechanisms that explain the role of this initial perturbation, known as “aging,” and propose a mathematical model that...
| Journal: | Proceedings of the National Academy of Sciences current issue | |
| Band: | 109 | |
| Ausgabe: | 6 | |
| Jahrgang: | 2012 | |
| Seiten: | 1809 | |
| DOI: | 10.1073/iti0612109 | |
| Erscheinungsdatum: | 07.02.2012 |
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The time required to recover from cold-induced paralysis (chill-coma) is a common measure of insect cold tolerance used to test central questions in thermal biology and predict the effects of climate change on insect populations. The onset of chill-coma in the fall field cricket (Gryllus pe ... mehr
Forecasting seasonal outbreaks of influenza [Applied Mathematics]
Influenza recurs seasonally in temperate regions of the world; however, our ability to predict the timing, duration, and magnitude of local seasonal outbreaks of influenza remains limited. Here we develop a framework for initializing real-time forecasts of seasonal influenza outbreaks, usin ... mehr
Undifferentiated nasopharyngeal carcinomas (NPCs) are commonly present with latent EBV infection. However, events regulating EBV infection at early stages of the disease and the role of EBV in disease pathogenesis are largely undefined. Genetic alterations leading to activation of cyclin D1 ... mehr
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