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University of Twente
(62 results)-
White Papers
Security Implications of Virtualization: A Literature Study
June 25, 2009, 12:00am PDT
Data centers accumulate corporate and personal data at a rapid pace. Driven by economy of scale and the high bandwidth of today's network connections, more and more businesses and individuals...
Provided by University of Twente
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White Papers
Using P3P in a Web Services-Based Context-Aware Application Platform
January 1, 2010, 12:00am PST
This paper describes a proposal for privacy control architecture to be applied in the WASP project. The WASP project aims to develop a context-aware service platform on top of 3G networks, using...
Provided by University of Twente
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White Papers
Distribution of PageRank Mass Among Principle Components of the Web
September 15, 2007, 12:00am PDT
The authors study the PageRank mass of principal components in a bow-tie Web Graph, as a function of the damping factor c. Using a singular perturbation approach, they show that the PageRank share...
Provided by University of Twente
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White Papers
A Taxonomy for a Constructive Approach to Software Evolution
August 1, 2007, 12:00am PDT
In many software design and evaluation techniques, either the software evolution problem is not systematically elaborated, or only the impact of evolution is considered. Thus, most of the time...
Provided by University of Twente
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White Papers
How Should A Small Company Interact In Its Business Network To Sustain Its Exchange Effectiveness?
July 1, 2008, 12:00am PDT
This paper investigates the dynamic alignment of network and business development of two small firms in the printing industry. Developments are followed over more than 8 years. The aim of the...
Provided by University of Twente
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White Papers
When Is It The Right Time To Change? A Case Study Of Implementing A New Activity In An Existing Business Relationship
August 29, 2010, 12:00am PDT
Scholars have argued that past experience in business relationships can impede the implementation of new activities. In this paper, the authors apply a practice-based perspective on time...
Provided by University of Twente
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White Papers
Consortial Benchmarking: A Method Of Academic-Practitioner Collaborative Research And Its Application In A B2B Environment
August 26, 2010, 12:00am PDT
The purpose of this paper is to develop a new method for academic-practitioner collaboration, addressing the literature on collaborative research. The research method involves model elaboration...
Provided by University of Twente
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White Papers
Distributed Branching Bisimulation Minimization by Inductive Signatures
December 13, 2009, 12:00am PST
The idea of distributed model checking of very large systems, is to store the state space in the collective memory of a cluster of workstations, and employ parallel algorithms to analyze the...
Provided by University of Twente
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White Papers
Unveiling The Importance Of Being A Preferred Customer In Order To Develop Innovations With Suppliers
August 26, 2010, 12:00am PDT
The purpose of this research is to understand why early supplier integration in new product development repeatedly fails and how to select the right suppliers to avoid supplier obstructionism. The...
Provided by University of Twente
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White Papers
Untraceable Transaction Systems
June 1, 2007, 12:00am PDT
The ongoing struggle between personal privacy and organizational security in terms of preventing misuse of services creates a strong demand for applications that satisfy personal privacy issues as...
Provided by University of Twente
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White Papers
Flash File Systems Hackers Hut / Linux Kernel
August 1, 2008, 12:00am PDT
Using flash memory in mass storage devices is an upcoming trend. With high performance, low energy consumption and shock proof properties, flash memory is an appealing alternative to the large...
Provided by University of Twente
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White Papers
RFID Jamming
June 1, 2007, 12:00am PDT
RFID tags pose a huge threat to privacy. People can be identified, tracked and profiled when carrying RFID tags. People buying RFID tagged products are offered to permanently disable the tag....
Provided by University of Twente
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White Papers
Dynamically Reconfigurable FFTs for Cognitive Radio on a Multiprocessor Platform
May 13, 2008, 12:00am PDT
Multiprocessor platforms have been proposed as an enabling technology for Cognitive Radio. In this paper, the authors explore various FFT implementations on a multiprocessor prototype platform as...
Provided by University of Twente
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White Papers
Extended eTVRA Vs. Security Checklist: Experiences in a Value-Web
October 11, 2008, 12:00am PDT
Security evaluation according to ISO 15408 (Common Criteria) is a resource and time demanding activity, as well as being costly. For this reason, only few companies take their products through a...
Provided by University of Twente
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White Papers
Explaining Differences In Team Performance Does Team Learning Behavior Matter?
March 25, 2008, 12:00am PDT
The aim of this paper is to investigate the relationship between team learning behavior and team performance. Following Edmondson (1999) the authors regard team learning as a group process...
Provided by University of Twente
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White Papers
Cloud Computing & Confidentially
May 24, 2010, 12:00am PDT
Cloud computing is an upcoming paradigm that offers tremendous advantages in economical aspects, such as reduced time to market, flexible computing capabilities, and limitless computing power. To...
Provided by University of Twente
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White Papers
A Tandem Queueing Model for Delay Analysis in Disconnected Ad Hoc Networks
March 27, 2008, 12:00am PDT
Ad hoc network routing protocols may fail to operate in the absence of an end-to-end connection from source to destination. This deficiency can be resolved by so-called delay-tolerant networking...
Provided by University of Twente
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White Papers
Advances in Emergency Networking
July 16, 2007, 12:00am PDT
Crisis situations require fast regain of control. Wireless ad-hoc networks will enable emergency services to act upon the actual status of the situation by retrieving and exchanging detailed...
Provided by University of Twente
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Whitepapers
An Optimal Query Assignment for Wireless Sensor Networks
December 21, 2012, 12:00am PST
With the increased use of large-scale real-time embedded sensor networks, new control mechanisms are needed to avoid congestion and meet required Quality of Service (QoS) levels. In this paper,...
Provided by University of Twente
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White Papers
D-SAR: A Distributed Scheduling Algorithm for Real-Time, Closed-Loop Control in Industrial Wireless Sensor and Actuator Networks
April 18, 2011, 12:00am PDT
Current wireless standards and protocols for industrial applications such as WirelessHART and ISA100.11a typically use centralized network management techniques for communication scheduling and...
Provided by University of Twente
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White Papers
Energy-Delay Tradeoff in Wireless Network Coding
May 23, 2011, 12:00am PDT
A queueing model for wireless communication network in which network coding is employed is introduced. It is shown that networks with coding are closely related to queueing networks with positive...
Provided by University of Twente
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White Papers
Queueing Analysis of Wireless Network Coding
May 30, 2011, 12:00am PDT
The authors consider a wireless communication device that uses network coding and acts as a relay for two connections. They analyze a two-dimensional continuous-time queueing model of the system...
Provided by University of Twente
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White Papers
COM-LOC++: A Distributed Range-Free Localization Algorithm in Wireless Networks
August 31, 2010, 12:00am PDT
This paper introduces a new localization algorithm called COM-LOC++ that improves the performance of a recently introduced distributed range-free algorithm called COM-LOC. COM-LOC and other...
Provided by University of Twente
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White Papers
Automatic Recognition of Object Use Based on Wireless Motion Sensors
September 13, 2010, 12:00am PDT
In this paper, the authors present a method for automatic, online detection of a user's interaction with objects. This represents an essential building block for improving the performance of...
Provided by University of Twente
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White Papers
Prototyping Web Services Based Network Monitoring
December 1, 2007, 12:00am PST
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...
Provided by University of Twente
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White Papers
Sensitivity Analysis of the Optimal Parameter Settings of an LTE Packet Scheduler
February 15, 2010, 12:00am PST
Advanced packet scheduling schemes in 3G/3G+ mobile networks provide one or more parameters to optimise the trade-off between QoS and resource efficiency. In this paper, the authors study the...
Provided by University of Twente
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White Papers
Outlier Detection Techniques for Wireless Sensor Networks: A Survey
October 6, 2008, 12:00am PDT
In the field of wireless sensor networks, measurements that significantly deviate from the normal pattern of sensed data are considered as outliers. The potential sources of outliers include noise...
Provided by University of Twente
-
White Papers
A Centralized Feedback Control Model for Resource Management in Wireless Networks
November 13, 2007, 12:00am PST
In a wireless environment, guaranteeing QoS is challenging because applications at multiple devices share the same limited radio bandwidth. In this paper, the authors introduce and study a...
Provided by University of Twente
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White Papers
Quantitative Evaluation in Embedded System Design: Predicting Battery Lifetime in Mobile Devices
February 8, 2008, 12:00am PST
In the design process of an (embedded) computer system there are several important attributes the developer has to take care of: first of all, the final product should do the right thing, the...
Provided by University of Twente
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White Papers
Stakeholder Interactions to Support Service Creation in Cloud Computing
June 28, 2010, 12:00am PDT
Cloud computing is already a major trend in IT. Cloud services are being offered at application (software), platform and infrastructure levels. This paper presents the authors' initial modeling...
Provided by University of Twente
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White Papers
Analysis Methodology for Flow-Level Evaluation of a Hybrid Mobile-Sensor Network
April 4, 2011, 12:00am PDT
The society uses a large diversity of co-existing wired and wireless networks in order to satisfy its communication needs. Cooperation between these networks can benefit performance, service...
Provided by University of Twente
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White Papers
A Cross-Layered Communication Protocol for Load Balancing in Large Scale Multi-Sink Wireless Sensor Networks
January 15, 2009, 12:00am PST
One of the fundamental operations in sensor networks is convergecast which refers to the communication pattern in which data is collected from a set of sensor nodes and forwarded to a common...
Provided by University of Twente
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White Papers
Scheduling Strategies for LTE Uplink With Flow Behaviour Analysis
May 1, 2010, 12:00am PDT
Long Term Evolution (LTE) is a cellular technology developed to support diversity of data traffic at potentially high rates. It is foreseen to extend the capacity and improve the performance of...
Provided by University of Twente
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White Papers
Wireless Strategies for Future and Emerging ITS Applications
July 31, 2008, 12:00am PDT
Within the Intelligent Transportation Systems (ITS) field, many applications of a diverse nature are considered and thus their communication requirements differ significantly. This makes it...
Provided by University of Twente
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White Papers
Hyperellipsoidal SVM-Based Outlier Detection Technique for GeoSensor Networks
April 10, 2009, 12:00am PDT
Recently, wireless sensor networks providing fine-grained spatio-temporal observations have become one of the major monitoring platforms for geo-applications. Along side data acquisition, outlier...
Provided by University of Twente
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White Papers
An Online Outlier Detection Technique for Wireless Sensor Networks Using Unsupervised Quarter-Sphere Support Vector Machine
November 28, 2008, 12:00am PST
The main challenge faced by outlier detection techniques designed for wireless sensor networks is achieving high detection rate and low false alarm rate while maintaining the resource consumption...
Provided by University of Twente
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White Papers
Multi-Channel Scheduling for Fast Convergecast in Wireless Sensor Networks
September 5, 2008, 12:00am PDT
The authors explore the following fundamental question - how fast can information be collected from a wireless sensor network? They consider a number of design parameters such as, power control,...
Provided by University of Twente
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White Papers
Boosting Web Intrusion Detection Systems by Inferring Positive Signatures
June 15, 2008, 12:00am PDT
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...
Provided by University of Twente
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White Papers
Concern-Based Assessment of Architectural Stability: A Comparative Study
June 17, 2010, 12:00am PDT
A concern is any consideration that can impact the software architecture and other artefacts. Sustaining stability of concerns realised in architectural designs is essential to obtain long-lasting...
Provided by University of Twente
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White Papers
A Graph-Based Aspect Interference Detection Approach for UML-Based Aspect-Oriented Models
June 19, 2010, 12:00am PDT
Aspect Oriented Modeling (AOM) techniques facilitate separate modeling of concerns and allow for a more flexible composition of the resulting models than traditional techniques. While this...
Provided by University of Twente
-
Whitepapers
An Optimal Query Assignment for Wireless Sensor Networks
December 21, 2012, 12:00am PST
With the increased use of large-scale real-time embedded sensor networks, new control mechanisms are needed to avoid congestion and meet required Quality of Service (QoS) levels. In this paper,...
Provided by University of Twente
-
Whitepapers
LTE Uplink Scheduling - Flow Level Analysis
December 9, 2010, 12:00am PST
Long Term Evolution (LTE) is a cellular technology developed to support data traffic at potentially high rates. It is foreseen to extend the capacity and improve the performance of current 3G...
Provided by University of Twente
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White Papers
Severe Congestion Handling Approaches in NSIS RMD Domains With Bi-Directional Reservations
April 25, 2008, 12:00am PDT
Real time applications usually impose strict QoS requirements on communication networks. Several QoS frameworks have been developed and standardized to satisfy these QoS requirements. Among them...
Provided by University of Twente
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White Papers
Flow Level Performance Comparison of Packet Scheduling Schemes for UMTS EUL
March 12, 2008, 12:00am PDT
The Enhanced Up-Link (EUL) is expected to provide higher capacity, increased data rates and smaller latency on the communication link from users towards the network. A key mechanism in the EUL...
Provided by University of Twente
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White Papers
Impact of Inter-Cell Interference on Flow Level Performance of Scheduling Schemes for the UMTS EUL
August 13, 2008, 12:00am PDT
UMTS (Universal Mobile Telecommunication System) networks are currently operational in many countries in the world. In order to fully exploit the available capacity and to provide increased data...
Provided by University of Twente
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White Papers
Analyzing the Impact of Relay Station Characteristics on Uplink Performance in Cellular Networks
May 1, 2009, 12:00am PDT
Uplink users in cellular networks, such as UMTS/HSPA, located at the edge of the cell generally suffer from poor channel conditions. Deploying intermediate relay nodes is seen as a promising...
Provided by University of Twente
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White Papers
Scheduler Dependent Modeling of Inter-Cell Interference in UMTS EUL
May 1, 2009, 12:00am PDT
In this paper, the authors analyze the performance of the UMTS Enhanced UpLink (EUL) in a network scenario, under various packet scheduling schemes. Besides the impact of the intrinsic differences...
Provided by University of Twente
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White Papers
Performance of Relay-Enabled Uplink in Cellular Networks - A Flow Level Analysis
August 25, 2009, 12:00am PDT
Uplink users in cellular networks, such as UMTS/HSPA, located at the edge of the cell generally suffer from poor channel conditions. Deploying intermediate relay nodes is seen as a promising...
Provided by University of Twente
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White Papers
Scheduler-Dependent Inter-Cell Interference and Its Impact on LTE Uplink Performance at Flow Level
March 16, 2011, 12:00am PDT
The Long Term Evolution (LTE) cellular technology is expected to extend the capacity and improve the performance of current 3G cellular networks. Among the key mechanisms in LTE responsible for...
Provided by University of Twente
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White Papers
A Formal Connection Between Security Automata and JML Annotations
May 11, 2009, 12:00am PDT
Security automata are a convenient way to describe security policies. Their typical use is to monitor the execution of an application, and to interrupt it as soon as the security policy is...
Provided by University of Twente
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White Papers
Permission-Based Separation Logic for Multithreaded Java Programs
February 28, 2011, 12:00am PST
This paper motivates and presents a program logic for reasoning about multithreaded Java-like programs with concurrency primitives such as dynamic thread creation, thread joining and reentrant...
Provided by University of Twente
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White Papers
Scheduler-Related Confidentiality for Multi-Threaded Programs
August 25, 2011, 12:00am PDT
Observational determinism has been proposed in the literature as a way to ensure confidentiality for multi-threaded programs. Intuitively, a program is observationally deterministic if the...
Provided by University of Twente
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White Papers
Scheduler-Specific Confidentiality for Multi-Threaded Programs and Its Logic-Based Verification
September 19, 2011, 12:00am PDT
Observational determinism has been proposed in the literature as a way to ensure confidentiality for multi-threaded programs. Intuitively, a program is observationally deterministic if the...
Provided by University of Twente
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White Papers
Representing Humans in System Security Models: An Actor-Network Approach
March 27, 2011, 12:00am PDT
System models to assess the vulnerability of information systems to security threats typically represent a physical infrastructure (buildings) and a digital infrastructure (computers and...
Provided by University of Twente
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White Papers
Communication-Centric SoC Debug Using Transactions
August 14, 2007, 12:00am PDT
The growth in System-on-Chip complexity puts pressure on system verification. Due to limitations in the pre-silicon verification process, errors in hardware and software slip through to the stage...
Provided by University of Twente
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White Papers
Transaction-Based Communication-Centric Debug
January 1, 2012, 12:00am PST
The behaviour of Systems On Chip (SOC) is complex because they contain multiple processors that interact through concurrent interconnects, such as Networks On Chip (NOC). Debugging such SOCs is...
Provided by University of Twente
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White Papers
Dynamic Workload Peak Detection for Slack Management
August 7, 2009, 12:00am PDT
In this paper an analytical study on dynamism and possibilities on slack exploitation by dynamic power management is presented. The authors introduce a specific workload decomposition method for...
Provided by University of Twente
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White Papers
A Controlled Experiment for the Assessment of Aspects
December 25, 2007, 12:00am PST
For years the Aspect Oriented Software Development community has promoted aspects as a solution to complexities introduced by implementing crosscutting concerns. And while a lot of research...
Provided by University of Twente
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White Papers
Benefits of Location-Based Access Control: A Literature Study
November 3, 2010, 12:00am PDT
Location-Based Access Control (LBAC) has been suggested as a means to improve IT security. By 'grounding' users and systems to a particular location, attackers supposedly have more difficulty in...
Provided by University of Twente
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White Papers
Spectral Minutiae Representations for Fingerprint Recognition
July 19, 2010, 12:00am PDT
The spectral minutiae representation introduced in this paper is a novel method to represent a minutiae set as a fixed-length feature vector, which is invariant to translation, and in which...
Provided by University of Twente
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White Papers
Side-View Face Recognition
June 1, 2011, 12:00am PDT
As a widely used biometrics, face recognition has many advantages such as being non-intrusive, natural and passive. On the other hand, in real-life scenarios with uncontrolled environment, pose...
Provided by University of Twente
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White Papers
Improving the Ultra-Low-Power Performance of IEEE 802.15.6 by Adaptive Synchronisation
June 19, 2011, 12:00am PDT
In ultra-low data rate Wireless Sensor Networks (WSNs) waking up just to listen to a beacon every superframe can be a major waste of energy. This study introduces MedMAC, a medium access protocol...
Provided by University of Twente
-
White Papers
A Graph-Based Aspect Interference Detection Approach for UML-Based Aspect-Oriented Models
June 19, 2010, 12:00am PDT
Aspect Oriented Modeling (AOM) techniques facilitate separate modeling of concerns and allow for a more flexible composition of the resulting models than traditional techniques. While this...
Provided by University of Twente
-
White Papers
Concern-Based Assessment of Architectural Stability: A Comparative Study
June 17, 2010, 12:00am PDT
A concern is any consideration that can impact the software architecture and other artefacts. Sustaining stability of concerns realised in architectural designs is essential to obtain long-lasting...
Provided by University of Twente
-
White Papers
Multi-Channel Scheduling for Fast Convergecast in Wireless Sensor Networks
September 5, 2008, 12:00am PDT
The authors explore the following fundamental question - how fast can information be collected from a wireless sensor network? They consider a number of design parameters such as, power control,...
Provided by University of Twente
-
White Papers
An Online Outlier Detection Technique for Wireless Sensor Networks Using Unsupervised Quarter-Sphere Support Vector Machine
November 28, 2008, 12:00am PST
The main challenge faced by outlier detection techniques designed for wireless sensor networks is achieving high detection rate and low false alarm rate while maintaining the resource consumption...
Provided by University of Twente
-
White Papers
Hyperellipsoidal SVM-Based Outlier Detection Technique for GeoSensor Networks
April 10, 2009, 12:00am PDT
Recently, wireless sensor networks providing fine-grained spatio-temporal observations have become one of the major monitoring platforms for geo-applications. Along side data acquisition, outlier...
Provided by University of Twente
-
White Papers
Wireless Strategies for Future and Emerging ITS Applications
July 31, 2008, 12:00am PDT
Within the Intelligent Transportation Systems (ITS) field, many applications of a diverse nature are considered and thus their communication requirements differ significantly. This makes it...
Provided by University of Twente
-
White Papers
Scheduling Strategies for LTE Uplink With Flow Behaviour Analysis
May 1, 2010, 12:00am PDT
Long Term Evolution (LTE) is a cellular technology developed to support diversity of data traffic at potentially high rates. It is foreseen to extend the capacity and improve the performance of...
Provided by University of Twente
-
White Papers
A Cross-Layered Communication Protocol for Load Balancing in Large Scale Multi-Sink Wireless Sensor Networks
January 15, 2009, 12:00am PST
One of the fundamental operations in sensor networks is convergecast which refers to the communication pattern in which data is collected from a set of sensor nodes and forwarded to a common...
Provided by University of Twente
-
White Papers
Analysis Methodology for Flow-Level Evaluation of a Hybrid Mobile-Sensor Network
April 4, 2011, 12:00am PDT
The society uses a large diversity of co-existing wired and wireless networks in order to satisfy its communication needs. Cooperation between these networks can benefit performance, service...
Provided by University of Twente
-
White Papers
Stakeholder Interactions to Support Service Creation in Cloud Computing
June 28, 2010, 12:00am PDT
Cloud computing is already a major trend in IT. Cloud services are being offered at application (software), platform and infrastructure levels. This paper presents the authors' initial modeling...
Provided by University of Twente
-
White Papers
Quantitative Evaluation in Embedded System Design: Predicting Battery Lifetime in Mobile Devices
February 8, 2008, 12:00am PST
In the design process of an (embedded) computer system there are several important attributes the developer has to take care of: first of all, the final product should do the right thing, the...
Provided by University of Twente
-
White Papers
A Centralized Feedback Control Model for Resource Management in Wireless Networks
November 13, 2007, 12:00am PST
In a wireless environment, guaranteeing QoS is challenging because applications at multiple devices share the same limited radio bandwidth. In this paper, the authors introduce and study a...
Provided by University of Twente
-
White Papers
Outlier Detection Techniques for Wireless Sensor Networks: A Survey
October 6, 2008, 12:00am PDT
In the field of wireless sensor networks, measurements that significantly deviate from the normal pattern of sensed data are considered as outliers. The potential sources of outliers include noise...
Provided by University of Twente
-
White Papers
Sensitivity Analysis of the Optimal Parameter Settings of an LTE Packet Scheduler
February 15, 2010, 12:00am PST
Advanced packet scheduling schemes in 3G/3G+ mobile networks provide one or more parameters to optimise the trade-off between QoS and resource efficiency. In this paper, the authors study the...
Provided by University of Twente
-
White Papers
Automatic Recognition of Object Use Based on Wireless Motion Sensors
September 13, 2010, 12:00am PDT
In this paper, the authors present a method for automatic, online detection of a user's interaction with objects. This represents an essential building block for improving the performance of...
Provided by University of Twente
-
White Papers
COM-LOC++: A Distributed Range-Free Localization Algorithm in Wireless Networks
August 31, 2010, 12:00am PDT
This paper introduces a new localization algorithm called COM-LOC++ that improves the performance of a recently introduced distributed range-free algorithm called COM-LOC. COM-LOC and other...
Provided by University of Twente
-
White Papers
Queueing Analysis of Wireless Network Coding
May 30, 2011, 12:00am PDT
The authors consider a wireless communication device that uses network coding and acts as a relay for two connections. They analyze a two-dimensional continuous-time queueing model of the system...
Provided by University of Twente
-
White Papers
Energy-Delay Tradeoff in Wireless Network Coding
May 23, 2011, 12:00am PDT
A queueing model for wireless communication network in which network coding is employed is introduced. It is shown that networks with coding are closely related to queueing networks with positive...
Provided by University of Twente
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