منابع مشابه
Slowing down pension indexing: the foreign experience.
Between 1975 and 1983, Canada, Finland, Sweden, the United Kingdom, and the Federal Republic of Germany--countries faced with immediate or long-term financing difficulties in their social security systems--modified their social security pension adjustment procedures. These changes in pension adjustments very often were made in conjunction with other restrictive measures such as increased contri...
متن کاملCritical slowing down in polynomial time algorithms.
Combinatorial optimization algorithms that compute exact ground states for disordered magnets are seen to exhibit critical slowing down at zero temperature phase transitions. Using the physical features of the models, such as vanishing stiffness on one side of the transition and the ground state degeneracy, the number of operations needed in the push-relabel algorithm for the random field Ising...
متن کاملDetecting hotspots via slowing down -- Part 2
This discussion paper is/has been under review for the journal Earth System Dynamics (ESD). Please refer to the corresponding final paper in ESD if available. Abstract Early Warning Signals (EWS) have become a popular statistical tool to infer stability properties of the climate system. In Part 1 of this two-part paper we have presented a diagnostic method to find the hotspot of a sudden transi...
متن کاملThe removal of critical slowing down
J. Brannicka, R. C. Browerbc, S. F. McCormicke, T. A. Manteuffele, J. C. Osbornbd and C. Rebbibc a Department of Mathematics, The Pennsylvania State University, 221 McAllister Building, University Park, PA 16802, USA b Center for Computational Science, Boston University, 3 Cummington St, MA 02215, USA c Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA d A...
متن کاملDetecting hotspots via slowing down -- Part 1
This discussion paper is/has been under review for the journal Earth System Dynamics (ESD). Please refer to the corresponding final paper in ESD if available. Abstract An analysis of so-called Early Warning Signals (EWS) is proposed to identify the spatial origin of a sudden transition that results from a loss in stability of a current state. EWS, such as rising variance and autocorrelation, ca...
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ژورنال
عنوان ژورنال: Nature
سال: 1990
ISSN: 0028-0836,1476-4687
DOI: 10.1038/345383a0