made by TCP, causing degraded end-toend performance. In this paper, we describe the additions and modifications to the standard Internet protocol stack (TCP/IP) to improve end-to-end reliable transport performance in mobile environments. The protocol changes are made to network-layer software

carzanig @ cs.colorado.edu This paper describes the design of SIENA, an Internet-scale event notification middleware service for distributed event-based applications deployed over wide-area networks. SIENA is responsible for selecting the notifications that are of in-terest to clients (as expressed

planet! In this paper, we propose a simple algorithm for estimating a distribution over geographic locations from a single image using a purely data-driven scene matching approach. For this task, we will leverage a dataset of over 6 million GPS-tagged images from the Internet. We represent the estimated

, distributed denial of service attacks, and routing exploits. This paper introduces the Internet Motion Sensor (IMS), a globally scoped Internet monitoring system whose goal is to measure, characterize, and track threats. The IMS architecture is based on three novel components. First, a Distributed Monitoring

are accounted for by teens' degree of autonomy as a function of domestic and scholastic obligations, the development of independent work practices, Internet connectivity access, and even transportation access. Moreover, while teen IM use is in part characterized as an optimizing choice between multiple

dissertation.de

Das Internet bietet heutzutage eine Vielfalt an Informationen. Um diese bereit stellen zu können, werden diese häufig mit Online-Werbung finanziert. Im Laufe der Jahre entwickelte sich so ein Markt für Werbeanzeigen. Heute findet man ein komplexes Werbesystem im Internet vor. Dieses nutzt vor

twickeln, welches so genannte mobile Communities bei der Organisation ihres Wissens unterstützt. Als Community bezeichnen wir eine Gruppe von Benutzern mit einem gemeinsamem Interesse an einem bestimmten Thema. Mobil wird eine Community dadurch, dass ihre Mitglieder das Community-Wissen mit Hilfe mobiler Endgerätes (z.B. PDAs) speichern und austauschen. Hierbei gehen wir davon aus, dass sich die mobilen Endgeräte mittels einer Kurzstreckenfunk-Technologie wie z.B. Bluetooth [5] spontan mit anderen Geräten in unmittelbarer Nähe vernetzen können, um Daten auszu-tauschen. Solche Funktechnologien sind dadurch charakterisiert, dass sie eine begren-

for mapping using the ArcIMS services. The integration of the ArcIMS with the Internet file system provides substantial benefits to GIS users because the application takes advantage of the powerful search, versioning, security, backup, and other features offered by the Internet file system and its underlined

Abstract. Convergence of the cellular world to an all-IP domain has stimulated the development of Internet Multimedia Subsystem (IMS) service architecture, which is touted by service providers and vendors as the next generation solution for breaking the barriers not only between cellular and IP