Nowadays, the performance evaluation of high-speed TCP protocols is the subject of intensive research. The main criteria used to evaluate the performance are: Fairness, Backward compatibility, Efficiency, Responsiveness, Scalability, TCP friendliness, and convergence. Most of researches were conducted to evaluate fairness. The majority of these researches used only two flows in a Dumbbell topol...

High-order implicit shock tracking is a new class of numerical methods to approximate solutions conservation laws with non-smooth features. These align elements the computational mesh features represent them perfectly, allowing high-order basis functions smooth regions solution without need for nonlinear stabilization, which leads accurate approximations on traditionally coarse meshes. The hall...

Recent research in the area of high speed TCP has revealed that the protocol can misbehave in cases of high bandwidth long delay networks. Here we present work that clearly demonstrates this behavior of TCP flows in detail. This examination has led us to study the influence of the underlying network as well as the end user system using bursty a protocol such as TCP under such conditions. We des...

We study the Casimir force on a single surface immersed in an inhomoge-neous medium. Specifically we study the vacuum fluctuations of a scalar field with a spatially varying squared mass, m 2 + λ∆(x − a) + V (x), where V is a smooth potential and ∆(x) is a unit-area function sharply peaked around x = 0. ∆(x − a) represents a semi-penetrable thin plate placed at x = a. In the limits {∆(x−a) → δ(...

Recent work has produced a theory for tropical convective available potential energy (CAPE) that highlights the Clausius-Clapeyron (CC) scaling of the atmosphere’s saturation deficit as a driver of increases in CAPE with warming. Here we test this so-called “zero-buoyancy” theory for CAPE by modulating the saturation deficit of cloud-resolving simulations of radiative-convective equilibrium in ...

At present, high-speed rail is used only as a mode of passenger transport. Yet, the acceleration of logistics and freight transport flows could be compatible with high-speed rail capabilities. This article examines the experiences, literature and prospects of high-speed rail for freight. It uses three hypotheses to evaluate the development of freight high-speed rail services in Europe. The arti...

A new second order primitive preconditioner technique (an all speed method) for solving all speed single/multi-phase flow is presented. With this technique, one can compute both compressible and incompressible flows with Mach-uniform accuracy and efficiency (i.e., accuracy and efficiency of the method are independent of Mach numbers). The new primitive preconditioner (all speed/Mach uniform) te...

This paper concerns the fundamental problem of identifying the content nature of a flow, namely text, binary, or encrypted, for the first time. We propose Iustitia, a tool for identifying flow nature on the fly. The key observation behind Iustitia is that text flows have the lowest entropy and encrypted flows have the highest entropy, while the entropy of binary flows stands in between. The bas...