In extreme value theory, the so-called extreme-value index is a parameter that controls the behavior of a distribution function in its right tail. Knowing this parameter is thus essential to solve many problems related to extreme events. In this paper, the estimation of the extreme-value index is considered in the presence of a random covariate, whether the conditional distribution of the varia...

This article is one of ten reviews selected from the Annual Update in Intensive Care and Emergency Medicine 2013 and co-published as a series in Critical Care. Other articles in the series can be found online at

In much of his research on intergenerational value change, Inglehart uses a four-item index to calculate levels of postmaterial and material value orientations. Latter waves of the World Values Surveys administer a 12-item values index in which the original four-item index is embedded. In some of his research, Inglehart compares values estimated from stand-alone and embedded indices. Using a sp...

Modelling of extreme events has always been of interest in fields such as hydrology and meteorology. However, after the recent global financial crises, appropriate models for modelling of such rare events leading to these crises have become quite essential in the finance and risk management fields. This paper models the extreme values of the Ghana stock exchange all-shares index (2000-2010) by ...

Let G(n; m) be a connected graph without loops and multiple edges which has n vertices and m edges. We ÿnd the graphs on which the zeroth-order connectivity index, equal to the sum of degrees of vertices of G(n; m) raised to the power − 1 2 , attains maximum.

THE electrocardiographic diagnosis of atrial enlargement is a common problem. The established criteria, based on voltage, configuration, and duration of the P wave, very often fail to confirm the diagnosis even in cases of known atrial enlargement. In 1958, Macruz, Perloff, and Case1 proposed a simple formula for electrocardiographic recognition of right, left, and combined atrial enlargement. ...

BACKGROUND Aortic valve area index adjusted for pressure recovery (energy loss index [ELI]) has been suggested as a more accurate measure of aortic stenosis (AS) severity, but its prognostic value has not been determined in a prospective study. METHODS AND RESULTS The relation between baseline ELI and rate of aortic valve events and combined total mortality and hospitalization for heart failu...

BACKGROUND Rapid, accurate, and reproducible assessment of intravascular volume status is crucial in order to predict the efficacy of volume expansion in septic patients. The aim of this study was to verify the feasibility and usefulness of the internal jugular vein collapsibility index (IJV-CI) as an adjunct to the inferior vena cava collapsibility index (IVC-CI) to predict fluid responsivenes...

BACKGROUND Onodera's prognostic nutritional index (OPNI), which is calculated using total lymphocyte count and serum albumin level, has been used as a marker of nutritional status, with its potential prognostic value in colorectal cancer having recently been postulated in Japan and China. There is still no data on the predictive value of OPNI in a Western population. PATIENTS AND METHODS A co...

We use Conley index theory to solve the singular boundary value problem Duxx+ f(u, ux, x) = 0 on an interval [−1, 1], where u ∈ R n and D is a diagonal matrix, with separated boundary conditions. Since we use topological methods the assumptions we need are weaker then the standard set of assumptions. The Conley index theory is used here not for detection of an invariant set, but for tracking ce...