university of twente

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Implementation of an On-Demand Routing Protocol for Wireless Sensor Networks

This paper presents their experiences in implementing and validating the on-demand EYES Source Routing protocol ESR in a real Wireless Sensor Network WSN environment. ESR has a fast recovery mechanism relying on MAC layer feedback to overcome frequent network topology changes resulting from node mobility and unreliability. A geographically restricted...

Tags: Network, Environment, On-demand, Wireless Sensor Network, Wireless, University Of Twente, ESR, Managed Hosting, Cloud Computing, Wireless And Mobility

White papers 2009-01-01

Boosting Web Intrusion Detection Systems by Inferring Positive Signatures

This paper presents a new approach to anomaly-based network intrusion detection for web applications. This approach is based on dividing the input parameters of the monitored web application in two groups: the "Regular" and the "Irregular" ones, and applying a new method for anomaly detection on the "Regular" ones based...

Tags: Web, Web Application, Training, Anomaly, University Of Twente, Intrusion Detection, Cloud Computing, Workforce Management, Training And Certification, Security, Human Resources

White papers 2008-06-15

Prototyping Web Services Based Network Monitoring

Web services is one of the emerging approaches in network management. This paper describes the design and implementation of four Web services based network monitoring prototypes. Each prototype follows a specific approach to retrieve management data, ranging from retrieving a single management data object, to retrieving an entire table of...

Tags: Web, Network, Web Service, Network Monitoring, University Of Twente, Management Data, Network Administration, Cloud Computing, Web Services, Networking, Enterprise Software, Software

White papers 2007-12-01

ATLANTIDES: An Architecture for Alert Verification in Network Intrusion Detection Systems

This paper presents an architecture1 designed for alert verification (i.e., to reduce false positives) in network intrusion-detection systems. The technique in this paper is based on a systematic and automatic anomaly-based analysis of the system output, which provides useful context information regarding the network services. The false positives raised by...

Tags: Network Intrusion Detection System, Network, Network Service, Intrusion Detection System, Anomaly, University Of Twente, Intrusion Detection, Network Security, Networking, Security

White papers 2007-09-19

Towards Educational Data Mining: Using Data Mining Methods for Automated Chat Analysis to Understand and Support Inquiry Learning Processes

This paper investigates the application of data mining methods to provide learners with real-time adaptive feedback on the nature and patterns of their on-line communication while learning collaboratively. The paper derived two models for classifying chat messages using data mining techniques and tested these on an actual data set. The...

Tags: Analysis, University Of Twente, Data Mining, Business Intelligence, Marketing Research, Databases, Enterprise Software, Software, Data Management, Marketing

White papers 2007-08-11

Visualizing the Limiting Factors for the Speed of TCP in Realtime

This work presents methods that detect the limiting factors for the speed of TCP in realtime. The limiting factors under consideration are the receive window, network and application limitation. The similarities in functionality between these methods are grouped in a framework in this work. In addition, this work shows the...

Tags: Factor, TCP, University Of Twente, Tcp/Ip, Networking

White papers 2007-07-28

SPHINX: An Anomaly-Based Web Intrusion Detection System

This paper presents Sphinx, an anomaly-based web intrusion detection system. Sphinx analyzes the parameters sent to the web server, infers the "Type" of each parameter and combines different techniques to detect attacks, specifically designed to cope with each parameter type. Sphinx like the widely known ModSecurity is implemented as an...

Tags: Web Server, Parameter, Web, Anomaly, University Of Twente, SPHINX, Web Servers, Channel Management, Open Source, Internet, Marketing

White papers 2007-06-30

Ethernet-Based Communication Framework for Sensor Integration on Industrial Robots

This paper presents a communication framework for integrating sensors in a robotic laser welding system. The framework was originally developed for the application of sensor-guided robotic laser welding, but the principles are generic, making it useful in other application areas as well. To use the sensor measurements during the robot...

Tags: Integration, University Of Twente, Robots, Ethernet, Emerging Technologies, Networking

White papers 2007-05-22

Delivering High-Quality Streaming Media Using Peer-2-Peer Networks

About 1% of all the information on the Internet is in the form of streaming media. Although this number seems relatively small, the amount of streams on the Internet is growing rapidly. Regular servers on the Internet cannot handle the stress induced by all the requests for high-quality streaming media...

Tags: P2P, Streaming Media, University Of Twente, Web Site Development, Peer To Peer (P2P), Internet, Web Technology, Digital Media, Consumer Electronics, Personal Technology

White papers 2007-02-02

Adaptive OFDM System Design for Cognitive Radio

Recently, Cognitive Radio has been proposed as a promising technology to improve spectrum utilization. A highly flexible OFDM system is considered to be a good candidate for the Cognitive Radio baseband processing where individual carriers can be switched off for frequencies occupied by a licensed user. In order to support...

Tags: Radio, University Of Twente, OFDM, Wireless

White papers 2006-07-07

SLA Calculus for End-to-End QoS of TCP-Based Applications in a Multi-Domain Environment

Next-generation communication services will be offered over distributed information and communication infrastructures consisting of a multitude of administrative domains, owned by different parties. This raises the problem for service providers to provide satisfactory levels of end-to-end Quality of Service QoS, as experienced by the paying end user, in a cost-effective...

Tags: SLA, QoS, Environment, TCP, University Of Twente, Service Level Management, It Operations, It service Management

White papers 2006-06-05

Wireless Sensor Networks and Beyond: A Case Study on Transport and Logistics

Wireless Sensor Networks provide opportunities even outside their usual application domain of environmental monitoring. This paper presents a case study on the use of Wireless Sensor Networks for the control and management of transport and logistics processes. In this study nodes will track all activities, and check for errors that...

Tags: Network, Wireless Sensor Network, Logistics, Wireless, University Of Twente, Supply Chain, Business Operations

White papers 2005-05-04

New Reno and SACK TCP Implemented in UMTS Networks: A Performance Analysis

Universal Mobile Telecommunication System shortly UMTS is seen as the future mobile network. The use of the existing Transmission Control Protocol TCP as transport protocol in an UMTS environment is an understandable choice. TCP is the most commonly used transport protocol on the internet, and if it will be used...

Tags: UMTS, Performance, TCP, University Of Twente, Tcp/Ip, Cellular Phones, Networking, Consumer Electronics, Personal Technology

White papers 2005-01-21

Risk-Driven Conceptual Modeling of Outsourcing Decisions

In the current networked world, outsourcing of information technology or even of entire business processes is often a prominent design alternative. In the general case, outsourcing is the distribution of economically viable activities over a collection of networked organizations. To evaluate outsourcing decision alternatives, the authors need to make a...

Tags: Modeling, University Of Twente, Outsourcing, It Operations, Business Operations, Outsourcing & Subcontracting

White papers 2004-11-08

Mapping Wireless Communication Algorithms to a Reconfigurable Architecture

This paper discusses the implementation of multi-standard communication systems in dynamically reconfigurable heterogeneous hardware. An overview of a wireless LAN communication system, namely HiperLAN/2, and a Bluetooth communication system is given. Possible implementations of these systems in a reconfigurable architecture are discussed. Suggestions for future activities in the Adaptive Wireless...

Tags: Algorithm, Wireless Communication, University Of Twente, Communication System, Wi-Fi, LANs, Wireless, Wireless LANs, Bluetooth, Networking

White papers

Additional Resources

Exchanging pictures to generate passwords?

Today, Ileana Buhan, a Romanian computer scientist, is presenting her PhD Thesis at the University of Twente in the Netherlands. She is using biometrics to protect confidential information when it is exchanged between two mobile devices. This is a very innovative approach to security. Buhan's biometric application will generate almost...

Tags: Password, Photograph, Buhan, PDAs, Handhelds, Hardware, Roland Piquepaille, Security

Blog posts 2008-10-23

University of Twente Makes Its Enterprise Directory Simpler and More Flexible

The University of Twente UT wanted to replace the obsolete Innosoft directory that managed staff and student contact details and ensure better protection for these contact details. The challenge was to enable staff and students to log on with a username and password and simplify the management and maintenance of...

Tags: Student, Staff

Case studies 2008-09-01