19,716 research outputs found
A Completeness Study on Certain Lax Pairs Including Zero Terms
We expand the completeness study instigated in [J. Math. Phys. 50 (2009),
103516, 29 pages] which found all Lax pairs with non-zero, separable
terms in each entry of each Lax matrix, along with the most general nonlinear
systems that can be associated with them. Here we allow some of the terms
within the Lax matrices to be zero. We cover all possible Lax pairs of this
type and find a new third order equation that can be reduced to special cases
of the non-autonomous lattice KdV and lattice modified KdV equations among
others
Simulations of Solid-on-Solid Models of Spreading of Viscous Droplets
We have studied the dynamics of spreading of viscous non-volatile fluids on
surfaces by MC simulations of SOS models. We have concentrated on the complete
wetting regime, with surface diffusion barriers neglected for simplicity.
First, we have performed simulations for the standard SOS model. Formation of a
single precursor layer, and a density profile with a spherical cap shaped
center surrounded by Gaussian tails can be reproduced with this model.
Dynamical layering (DL), however, only occurs with a very strongly attractive
van der Waals type of substrate potential. To more realistically describe the
spreading of viscous liquid droplets, we introduce a modified SOS model. In the
new model, tendency for DL and the effect of the surface potential are in part
embedded into the dynamics of the model. This allows a relatively simple
description of the spreading under different conditions, with a temperature
like parameter which strongly influences the droplet morphologies. Both rounded
droplet shapes and DL can easily be reproduced with the model. Furthermore, the
precursor width increases proportional to the square root of time, in
accordance with experimental observations. PACS: 68.10.Gw, 05.70.Ln, 61.20.Ja.Comment: to appear in Physica A (1994), standard LaTex, 20 page
RUNX oncoproteins and miRNA networks
News on: An AML1-ETO/miR-29b-1 regulatory circuit modulates phenotypic properties of acute myeloid leukemia cells by Zaidi et
al. Oncotarget. 2017; 8:39994-40005. https://doi.org/10.18632/oncotarget.18127
Study-development of improved photointerpretative techniques to wheat identification
There are no author-identified significant results in this report
Process tracing: a laudable aim or a high-tariff methodology?
It was with considerable pleasure and enthusiasm that I accepted the invitation of Christine Trampusch
and Bruno Palier, the editors of this special issue, to respond to their small but excellent collection
of papers on process tracing in political economy. Like them (Trampusch and Palier 2016), I am
convinced that what they and others typically call process tracing can, if appropriately (and, indeed,
sparingly) used, help open the black box of causation in social, political and economy systems; it can,
in short, help us fashion better explanations of social, political and economic outcomes. I am also convinced,
like them, that the clarification of what process tracing actually entails methodologically, as is
the principal aim of this special issue, will help us better make that case.
In the, alas, all too limited space I have, I cannot and hence do not seek to provide a detailed commentary
and reflection on each of the papers in this collection. Instead, I will keep my comments very
general – using, as my point of departure, the editors’ very useful framing essay. I will confine myself
to three appreciative, though at the same time critical yet I hope constructive, observations in the
hope of advancing the debat
Does capitalism (still) come in varieties?
That capitalisms vary and that these capitalisms neatly resolve themselves into distinct and discrete ‘varieties of capitalism’ is an almost foundational claim of contemporary comparative political economy. Yet it is far from evident that it is true. In this article, I return to the varieties conjecture, assessing the degree to which the claim might be warranted. In the process, I argue for the importance of differentiating clearly between ideal types and real types and for the value of heeding Weber’s advice about the dangers of confusing one for the other. I suggest that although capitalisms do not really come in varieties it is sometimes useful to proceed on the basis that they do, particularly if we think of such varieties as potentially dystopic. I suggest that such an acknowledgement is crucial in sensitizing us to the potential biases of varietal thinking, drawing out the implications for the positing of capitalist varieties in the period after the global financial crisis
Labeling research in support of through-the-season area estimation
The development of LANDSAT-based through-the-season labeling procedures for corn and soybeans is discussed. A model for predicting labeling accuracy within key time periods throughout the growing season is outlined. Two methods for establishing the starting point of one key time period, viz., early season, are described. In addition, spectral-temporal characteristics for separating crops in the early season time period are discussed
Quantitative evaluation of multiband photographic techniques Final report
Quantitative evaluation of multiband photographic techniques using combination of black and white and color photo
Gauging the Gravity of the Situation: The Use and Abuse of Expertise in Estimating the Economic Costs of Brexit
HM Treasury’s estimation of the economic consequences of Brexit – using standard macroeconomic models – during the EU referendum campaign represents a remarkable intervention in a highly politicized public debate. It raises a series of questions about the use of economic expertise. Through a detailed theoretical and empirical critique of the Treasury’s methodology – and a reassessment of the likely effects of Brexit in light of this – we cast doubt on the utility of their approach, highlighting methodological issues, unrealistic assumptions, and misrepresentations of established facts. In the process we seek to identify some of the wider implications for the use and potential abuse of economic expertise in highly charged political contexts, such as the EU referendum debate.L’évaluation des conséquences du Brexit effectuée par le Trésor britannique à l’aide de modèles macroéconomiques standards, lors de la campagne du référendum, constitue une intervention d’importance au sein d’un débat public hautement politisé. Elle soulève une série de questions quant à l’usage de l’expertise économique. Au moyen d’une critique théorique et empirique détaillée de la méthode utilisée par le Trésor britannique – et d’une réévaluation des effets probables du Brexit à la lumière de cette critique – nous remettons en cause la pertinence de l’intervention du Trésor, en soulignant ses problèmes méthodologiques, des hypothèses, pour certaines, irréalistes et une présentation erronée des faits. Nous cherchons ainsi à caractériser les implications de l’usage abusif de l’expertise économique dans un contexte fortement politisé, comme pouvait l’être le débat sur le Brexit.1 Introduction 2 Methods Gravity Problems with HM Treasury estimates Proposed methodology 3 Results New models (frequentist) Model selection (Bayesian) 4 Simulating Brexit Methodology and problems Sensitivity analysis 5 Conclusion References Appendix A: Data sources Appendix B: Descriptive statistics Appendix C: Full results of frequentist analysis Appendix D: Results from Bayesian analysis Appendix E: Traceplots for Bayesian analysis Appendix F: Further modeling issues Appendix G: List of models and result
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