We show that hydrodynamic modeling coupled to the synthesis of the plasma emission, taking into account the response of a given instrument, provides very useful information for the interpretation of ar-ing coronal loops observed in the X-ray band. We show how the same model are would appear very diierent if observed with Yohkoh SXT and TRACE and how our approach can help in providing a very det...

account of the several works that came from Digby's pen and, if one might judge from his Private Memoirs, his over-active brain. But even in this involved field of authorship one fails to find a solution to the strange uncertainties and contradictions that made Digby, Digby. Even the "powder of sympathy" in all its implications affords no explanation. Nevertheless, Sir Kenelm could not well be ...

Recently Li and Peng (2009a) proposed a bias reduction method for estimating the endpoint of a distribution function via an external estimator for the so-called second order parameter. Unlike the same study for the tail index of a heavy tailed distribution, the above procedure requires a certain rate of convergence of the external estimator rather than consistence. This makes the choice of such...

1. INTRODUCTION. It has become a truism, at least among statisticians, that while statistics is a mathematical science, it is not a subfield of mathematics. We even have apho-risms to express some ways in which our science differs from mathematics. George Box: " All models are wrong, but some are useful. " George Cobb: " In mathematics, context obscures structure. In data analysis, context prov...

A popular approach to significance testing proposes to decide whether the given hypothesized statistical model is likely to be true (or false). Statistical decision theory provides a basis for this approach by requiring every significance test to make a decision about the truth of the hypothesis/model under consideration. Unfortunately, many interesting and useful models are obviously false (th...

account of the several works that came from Digby's pen and, if one might judge from his Private Memoirs, his over-active brain. But even in this involved field of authorship one fails to find a solution to the strange uncertainties and contradictions that made Digby, Digby. Even the "powder of sympathy" in all its implications affords no explanation. Nevertheless, Sir Kenelm could not well be ...

• It is well-known that estimating extreme quantiles, namely, quantiles lying beyond the range of the available data, is a nontrivial problem that involves the analysis of tail behavior through the estimation of the extreme-value index. For heavy-tailed distributions, on which this paper focuses, the extreme-value index is often called the tail index and extreme quantile estimation typically in...

visitor management is considered important for the sustainable development of protected areas as the presence of visitors may cause negative impacts on wildlife and vegetation. within this framework, visitor impacts and perceptions are considered critical for decision-making and planning of future management regimes. this paper resumes opinions of visitors of the valley of butterflies in rhodes...