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Graz University of Technology
(20 results)-
White Papers
Self-Healing Wireless Sensor Networks
March 6, 2007, 12:00am PST
Nowadays wireless sensor networks have found their way into a wide variety of applications and systems with vastly varying requirements and characteristics, but all of them have a common element:...
Provided by Graz University of Technology
-
White Papers
Empowering Plagiarism Detection with a Web Services Enabled Collaborative Network
July 29, 2009, 12:00am PDT
This paper explains how collaborative efforts in terms of technology and content, can help improve plagiarism detection and prevention. It presents a web service oriented architecture, which...
Provided by Graz University of Technology
-
White Papers
Atmospheric Channel Effects on Terrestrial Free Space Optical Communication Links
July 5, 2009, 12:00am PDT
This paper illustrates the challenges imposed by the atmospheric channel on the design of a terrestrial laser communication link. The power loss due to scattering effect is described using the...
Provided by Graz University of Technology
-
White Papers
A Study of Fog Characteristics Using Free-Space Optical Wireless Links
June 1, 2010, 12:00am PDT
A technique for modeling the fog droplet size distributions using modified gamma distribution has been demonstrated by considering two separate radiation fog events recorded in Graz (Austria) and...
Provided by Graz University of Technology
-
White Papers
The Energy Cost of Cryptographic Key Establishment in Wireless Sensor Networks
January 3, 2007, 12:00am PST
Wireless sensor nodes generally face serious limitations in terms of computational power, energy supply, and network bandwidth. Therefore, the implementation of effective and secure techniques for...
Provided by Graz University of Technology
-
White Papers
Towards a Web Service for Competence-Based Learning and Testing
May 3, 2007, 12:00am PDT
Adaptation to the learner's knowledge level and competence-based course creation has been a major goal of e-learning research projects. However, besides the research projects there is a powerful...
Provided by Graz University of Technology
-
White Papers
Peer Assessment System for Modern Learning Settings: Towards a Flexible e-Assessment System
August 2, 2009, 12:00am PDT
According to the rapid changes in the life styles and in order to cope with the new requirements for modern learning settings and activities, several applications have been developed to provide...
Provided by Graz University of Technology
-
White Papers
Managing Collaborative Learning Processes in e-Learning Applications
April 27, 2007, 12:00am PDT
This paper argues that current ELearning approaches do not take into account process-oriented nature of learning in traditional settings. This situation can be seen as one of the reasons why many...
Provided by Graz University of Technology
-
White Papers
Developing an e-Learning Application for Teaching Phraseology in Foreign Languages: Lessons Learned From EPHRAS Project
July 13, 2007, 12:00am PDT
The main goal of the Ephras project funded by the EU Commission was development of an E-Learning application to support self-initiated learning of phrases in a foreign language. The application...
Provided by Graz University of Technology
-
White Papers
E-Learning Practices and Web 2.0
September 28, 2007, 12:00am PDT
This paper aims to give a consolidated review on the development in these two years; which technologies and trends proved to be enduring and how the concept of Web 2.0 has influenced ELearning in...
Provided by Graz University of Technology
-
White Papers
Low Data Complexity Attacks on AES
February 21, 2011, 12:00am PST
The majority of current attacks on reduced-round variants of block ciphers seeks to maximize the number of rounds that can be broken, using less data than the entire codebook and less time than...
Provided by Graz University of Technology
-
White Papers
On Authentication With HMAC and Non-Random Properties
April 20, 2007, 12:00am PDT
MAC algorithms can provide cryptographically secure authentication services. One of the most popular algorithms in commercial applications is HMAC based on the hash functions MD5 or SHA-1. In the...
Provided by Graz University of Technology
-
White Papers
Second Preimages for Iterated Hash Functions Based on a b-Block Bypass
September 26, 2006, 12:00am PDT
In this paper, the authors present a second preimage attack on a double block-length hash proposal presented at FSE 2006. If the hash function is instantiated with DESX as underlying block cipher,...
Provided by Graz University of Technology
-
White Papers
Efficient Quality-Based Playout Buffer Algorithm
September 15, 2009, 12:00am PDT
Playout buffers are used in VoIP systems to compensate for network delay jitter by making a trade-off between delay and loss. In this paper the authors propose a playout buffer algorithm that...
Provided by Graz University of Technology
-
White Papers
Efficient Heuristics for Discriminative Structure Learning of Bayesian Network Classifiers
August 1, 2010, 12:00am PDT
The authors introduce a simple order-based greedy heuristic for learning discriminative structure within generative Bayesian network classifiers. The authors propose two methods for establishing...
Provided by Graz University of Technology
-
White Papers
An Adaptive Multi-Purpose Transmission Scheme for H.264 Encoded Video in Wireless Networks
May 2, 2008, 12:00am PDT
Transmitting live video data is crucial in almost any surveillance application. Although the emerging research field of smart cameras promises to automate video analysis, human operators are still...
Provided by Graz University of Technology
-
White Papers
Towards Trust Services for Language-Based Virtual Machines for Grid Computing
March 21, 2008, 12:00am PDT
The concept of Trusted Computing (TC) promises a new approach to improve the security of computer systems. The core functionality, based on a hardware component known as Trusted Platform Module...
Provided by Graz University of Technology
-
White Papers
Enhanced Least Squares Support Vector Machines for Decision Modeling in a Multi-Sensor Fusion Framework
July 4, 2007, 12:00am PDT
In this paper, the authors introduce a software framework for embedded online data fusion on different levels of data abstraction. They present their data oriented fusion model and introduce the...
Provided by Graz University of Technology
-
White Papers
Elliptic Curve Cryptography on the WISP UHF RFID Tag
June 13, 2011, 12:00am PDT
The Wireless Identification and Sensing Platform (WISP) can be used to demonstrate and evaluate new RFID applications. In this paper, the authors present practical results of an implementation of...
Provided by Graz University of Technology
-
White Papers
An Automatic Hybrid Segmentation Approach for Aligned Face Portrait Images
September 16, 2009, 12:00am PDT
With the introduction of electronic personal documents (e.g. passports) in recent years the analysis of suitable photographs has become an important field of research. Such photographs for machine...
Provided by Graz University of Technology
-
White Papers
An Automatic Hybrid Segmentation Approach for Aligned Face Portrait Images
September 16, 2009, 12:00am PDT
With the introduction of electronic personal documents (e.g. passports) in recent years the analysis of suitable photographs has become an important field of research. Such photographs for machine...
Provided by Graz University of Technology
-
White Papers
Elliptic Curve Cryptography on the WISP UHF RFID Tag
June 13, 2011, 12:00am PDT
The Wireless Identification and Sensing Platform (WISP) can be used to demonstrate and evaluate new RFID applications. In this paper, the authors present practical results of an implementation of...
Provided by Graz University of Technology
-
White Papers
Enhanced Least Squares Support Vector Machines for Decision Modeling in a Multi-Sensor Fusion Framework
July 4, 2007, 12:00am PDT
In this paper, the authors introduce a software framework for embedded online data fusion on different levels of data abstraction. They present their data oriented fusion model and introduce the...
Provided by Graz University of Technology
-
White Papers
Towards Trust Services for Language-Based Virtual Machines for Grid Computing
March 21, 2008, 12:00am PDT
The concept of Trusted Computing (TC) promises a new approach to improve the security of computer systems. The core functionality, based on a hardware component known as Trusted Platform Module...
Provided by Graz University of Technology
-
White Papers
An Adaptive Multi-Purpose Transmission Scheme for H.264 Encoded Video in Wireless Networks
May 2, 2008, 12:00am PDT
Transmitting live video data is crucial in almost any surveillance application. Although the emerging research field of smart cameras promises to automate video analysis, human operators are still...
Provided by Graz University of Technology
-
White Papers
Self-Healing Wireless Sensor Networks
March 6, 2007, 12:00am PST
Nowadays wireless sensor networks have found their way into a wide variety of applications and systems with vastly varying requirements and characteristics, but all of them have a common element:...
Provided by Graz University of Technology
-
White Papers
Efficient Heuristics for Discriminative Structure Learning of Bayesian Network Classifiers
August 1, 2010, 12:00am PDT
The authors introduce a simple order-based greedy heuristic for learning discriminative structure within generative Bayesian network classifiers. The authors propose two methods for establishing...
Provided by Graz University of Technology
-
White Papers
Efficient Quality-Based Playout Buffer Algorithm
September 15, 2009, 12:00am PDT
Playout buffers are used in VoIP systems to compensate for network delay jitter by making a trade-off between delay and loss. In this paper the authors propose a playout buffer algorithm that...
Provided by Graz University of Technology
-
White Papers
Second Preimages for Iterated Hash Functions Based on a b-Block Bypass
September 26, 2006, 12:00am PDT
In this paper, the authors present a second preimage attack on a double block-length hash proposal presented at FSE 2006. If the hash function is instantiated with DESX as underlying block cipher,...
Provided by Graz University of Technology
-
White Papers
On Authentication With HMAC and Non-Random Properties
April 20, 2007, 12:00am PDT
MAC algorithms can provide cryptographically secure authentication services. One of the most popular algorithms in commercial applications is HMAC based on the hash functions MD5 or SHA-1. In the...
Provided by Graz University of Technology
-
White Papers
Low Data Complexity Attacks on AES
February 21, 2011, 12:00am PST
The majority of current attacks on reduced-round variants of block ciphers seeks to maximize the number of rounds that can be broken, using less data than the entire codebook and less time than...
Provided by Graz University of Technology
-
White Papers
E-Learning Practices and Web 2.0
September 28, 2007, 12:00am PDT
This paper aims to give a consolidated review on the development in these two years; which technologies and trends proved to be enduring and how the concept of Web 2.0 has influenced ELearning in...
Provided by Graz University of Technology
-
White Papers
Developing an e-Learning Application for Teaching Phraseology in Foreign Languages: Lessons Learned From EPHRAS Project
July 13, 2007, 12:00am PDT
The main goal of the Ephras project funded by the EU Commission was development of an E-Learning application to support self-initiated learning of phrases in a foreign language. The application...
Provided by Graz University of Technology
-
White Papers
Managing Collaborative Learning Processes in e-Learning Applications
April 27, 2007, 12:00am PDT
This paper argues that current ELearning approaches do not take into account process-oriented nature of learning in traditional settings. This situation can be seen as one of the reasons why many...
Provided by Graz University of Technology
-
White Papers
Peer Assessment System for Modern Learning Settings: Towards a Flexible e-Assessment System
August 2, 2009, 12:00am PDT
According to the rapid changes in the life styles and in order to cope with the new requirements for modern learning settings and activities, several applications have been developed to provide...
Provided by Graz University of Technology
-
White Papers
Towards a Web Service for Competence-Based Learning and Testing
May 3, 2007, 12:00am PDT
Adaptation to the learner's knowledge level and competence-based course creation has been a major goal of e-learning research projects. However, besides the research projects there is a powerful...
Provided by Graz University of Technology
-
White Papers
The Energy Cost of Cryptographic Key Establishment in Wireless Sensor Networks
January 3, 2007, 12:00am PST
Wireless sensor nodes generally face serious limitations in terms of computational power, energy supply, and network bandwidth. Therefore, the implementation of effective and secure techniques for...
Provided by Graz University of Technology
-
White Papers
A Study of Fog Characteristics Using Free-Space Optical Wireless Links
June 1, 2010, 12:00am PDT
A technique for modeling the fog droplet size distributions using modified gamma distribution has been demonstrated by considering two separate radiation fog events recorded in Graz (Austria) and...
Provided by Graz University of Technology
-
White Papers
Atmospheric Channel Effects on Terrestrial Free Space Optical Communication Links
July 5, 2009, 12:00am PDT
This paper illustrates the challenges imposed by the atmospheric channel on the design of a terrestrial laser communication link. The power loss due to scattering effect is described using the...
Provided by Graz University of Technology
-
White Papers
Empowering Plagiarism Detection with a Web Services Enabled Collaborative Network
July 29, 2009, 12:00am PDT
This paper explains how collaborative efforts in terms of technology and content, can help improve plagiarism detection and prevention. It presents a web service oriented architecture, which...
Provided by Graz University of Technology
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