231 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Statistical notes for clinical researchers: Sample size calculation 3. Comparison of se...

HADES ist ein im WiN­Labor an der Universität Erlangen entwickeltes System zur Ermittlung qualitätsrelevanter Daten wie IP­Paketlaufzeit und Paketverluste in Computernetzwerken. Gemessene und statistisch bewertete Paketlaufzeiten lassen Rückschlüsse zu, wie die Qualität von Netzwerkverbindungen einzuordnen ist und wo kritische Netzwerksituationen auftreten bzw. auftreten können. In dieser Arbei...

The IETF has developed a one-way packet loss metric that measures the loss rate on a Poisson and Periodic probe streams between two hosts. However, the impact of packet loss on applications is, in general, sensitive not just to the average loss rate but also to the way in which packet losses are distributed in loss episodes (i.e., maximal sets of consecutively lost probe packets). This document...

This paper presents novel evaluation criteria which are used to evaluate the effectiveness of Virginia wineries websites in the following four different dimensions: (1) general features of a website; (2) wine tourism; (3) marketing; and (4) educational. A total of 182 wineries are analyzed by researchers and the Cohen’s Kappa was computed as an inter-reliability test among raters. Using a dicho...

In this article we examine the impact of daily trade turnover on the day-of-the-week effect in emerging stock markets. The empirical analysis was made by using Vilnius Stock OMX equities return data. The main method suggested for analysis was based on formation of three portfolios with equities having low, medium and high daily turnover. By applying traditional statistical research methods, suc...

In the framework of linear transformations between inertial systems, there are no physical reasons for assuming any anisotropy in the one-way velocity of light. Pacs 03.30 Special relativity

In this paper we investigate the optimal supply function for a generator who sells electricity into a wholesale electricity spot market and whose profit function is not smooth. In previous work in this area, the generator’s profit function has usually been assumed to be continuously differentiable. However in some interesting instances, this assumption is not satisfied. These include the case w...

We discuss the physical interpretation of unparticles and review the constraints from cosmology. Unparticles may be understood in terms of confined states of a strongly-coupled scale-invariant theory, where scale-invariance implies that the confined states have continuous masses. This picture is consistent with the observation that unparticle operators can be represented in terms of continuous ...