Internet Drafts are draft documents valid for a maximum of 6 months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet Drafts as reference material or to cite them other than as a "work in progress". Abstract This document describes an updated version of the IP Authentication Header (AH), which is designed to provide authentication ser...

The following study deals with the updating the finite element model of structures using the operational modal analysis. The updating process uses an evolutionary optimization algorithm, namely bees algorithm which applies instinctive behavior of honeybees for finding food sources. To determine the uncertain updated parameters such as geometry and material properties of the structure, local and...

Many educational sites are static and rarely updated, diminishing the dynamism of the Web. An online learning system should be adjustable, expandable and regularly updated, preferably by educational staff without the direct intervention of computer experts, reflecting the dynamic character of education. Το achieve this aim, we propose a system based on three roles: Administrator, Educator and L...

The electronic supplementary material for this article has been updated.

INTRODUCTION Phlebotomine sand flies are small insects of great medical relevance. This article presents an updated list of the phlebotomine sand flies occurring in the State of Pernambuco, Brazil. METHODS A review of literature published since the 1940s up to May 2010 was conducted and voucher material deposited in reference collections were studied. RESULTS A total of 37 phlebotomine spec...

Journal articles are sometimes later reprinted as chapters of edited books. The question whether citations of this material should mention the book or the journal has significant implications. I describe several advantages of citing the journal: it allows the readers to locate the material more easily and to handle it more conveniently (when it is available electronically); it gives a better si...

This is an updated and enlarged version of Chapter 4 of the author’s Dynamic Programming and Optimal Control, Vol. II, 4th Edition, Athena Scientific, 2012. It includes new material, and it is substantially revised and expanded (it has more than doubled in size). The new material aims to provide a unified treatment of several models, all of which lack the contractive structure that is character...