Different graph generalizations have been recently used in an ad-hoc manner to represent multilayer networks, i.e. systems formed by distinct layers where each layer can be seen as a network. Similar constructions have also been used to represent time-varying networks. We introduce the concept of MultiAspect Graph (MAG) as a graph generalization that we prove to be isomorphic to a directed grap...

The Chinese refined oil pricing reform in 2013 has brought its price to be more aligned with the international price, helping mitigate prior distorted mechanisms. Its impact on correlation, tail risks, and spillover effects between crude market sectoral stock markets warrants empirical assessments. Time-varying copula models conditional VaR (CoVaR) are employed examine correlation indexes befor...

A general framework for the study of regular variation (RV) is that Polish star-shaped metric spaces, while recent developments in [41] have discussed RV with respect to a properly localised boundedness B. Along lines latter approach, we discuss Borel measures and random processes on spaces (D,dD). Tail introduced [47] appear naturally as limiting regularly varying time series. We define tail m...

Abstract Spacecraft observations provide evidence about the existence of various waves and kinetic instabilities in solar wind plasmas. These play an important role dynamics wind. In present work, bump-on-tail (BOT) instability is revisited by employing κ then modified (r, κ) distributions using a quasilinear approach. The evolution studied analytically numerically data. growth rate BOT for var...

A mathematical model is used to simulate the effect of wind conditions on men's and women's 200-m times. Four questions are posed: What is the effect of constant winds on 200-m performance? What is the effect of varying wind speed and direction? What is the effect of the lane allocation? How do wind conditions affect the velocity profile? The race is simulated for winds with constant velocity a...

Consider a portfolio of n obligors such as loans, corporate bonds and other instruments subject to possible default. Tang and Yuan (2012, Submitted) introduced a new model for the loss given default and studied its tail behavior, Value at Risk, and Conditional Tail Expectation under the assumption that the losses jointly follow a multivariate regularly varying distribution. However, in the case...

This paper highlights a novel approach to stabilizing and controlling pitch and yaw motion via a set of horizontal tail that can act as elevator and rudder. The tail is incorporated into a new design of blended wing body (BWB) aircraft, known as Baseline-V, located just aft of the trailing edge of its inboard wing. The proposed close-coupled tail is equipped with elevators that deflect in uniso...

" r? Let X~= X and Y~= Y for t = 1, 2 . . . . . X, ,= ~ X ~ and !1, = Y~. Let S be any set, cg = {w(. 1" I s ) lseS} t = l t = l n be a set of (a x 2) stochastic matrices w( ' l ' ls) , and St=S , t= 1 . . . . . n. For every sn=(s 1 . . . . . s " ) e H S t n t = l define P (. ]" Is.) by P (y.[x.ls.) = I~ w (yt]x~lst) for every x. = (x a . . . . . x")~ X . and every y. = (yl, ... , y.)e 11.. t =...

• Delay sensitive multimedia applications are booming over a variety of time-varying networks (e.g. sensor networks, WiMax, Wireless LAN, etc.) • Existing dynamic distributed network environments cannot provide adequate support for delay-sensitive multimedia applications • This problem has been investigated for a decade, but we still do not have efficient solutions for it.

The present paper is concerned with the stationary workload of queues heavy-tailed (regularly varying) characteristics. We adopt a transform perspective to illuminate close connection between tail asymptotics and heavy-traffic limit in infinite-variance scenarios. This serves as tribute some pioneering results J.W. Cohen this domain. specifically demonstrate that reduced-load equivalence proper...