Taylor & Francis Group

Displaying 1-40 of 51 results

  • White Papers // Nov 2011

    Combining RFID With Ontologies to Create Smart Objects

    Radio Frequency IDentification (RFID) technology has long been known for its ability to uniquely identify objects. Recent years have witnessed a significant increase in storage capacity on the tag, which is giving rise to a new set of application scenarios. As the tag itself can carry relevant context information, processes...

    Provided By Taylor & Francis Group

  • White Papers // Jun 2011

    Spatial Cloud Computing: How Can the Geospatial Sciences Use and Help Shape Cloud Computing?

    The geospatial sciences face grand Information Technology (IT) challenges in the twenty-first century: data intensity, computing intensity, concurrent access intensity and spatiotemporal intensity. These challenges require the readiness of a computing infrastructure that can: better support discovery, access and utilization of data and data processing so as to relieve scientists...

    Provided By Taylor & Francis Group

  • White Papers // May 2011

    Probabilistic Verification of Architectural Software Models Using SoftArc and Prism

    In this paper, the authors will describe the SoftArc approach. With the SoftArc approach it is possible to model and analyze safety-critical embedded and distributed systems that consist of both hard- and software. They are going to present the SoftArc modelling language, its syntax and semantics. The semantics of the...

    Provided By Taylor & Francis Group

  • White Papers // Dec 2010

    Identifying Influential Factors of Business Process Performance Using Dependency Analysis

    The authors present a comprehensive framework for identifying influential factors of business process performance. In particular, the approach combines monitoring of process events and Quality of Service (QoS) measurements with dependency analysis to effectively identify influential factors. The framework uses data mining techniques to construct tree structures to represent dependencies...

    Provided By Taylor & Francis Group

  • White Papers // Oct 2010

    Forecasting And Combining Competing Models Of Exchange Rate Determination

    This paper investigates the out-of-sample forecast performance of a set of competing models of exchange rate determination. The authors compare standard linear models with models that characterize the relationship between exchange rate and the underlying fundamentals by nonlinear dynamics. Linear models tend to outperform at short forecast horizons especially when...

    Provided By Taylor & Francis Group

  • White Papers // Aug 2010

    Formal Performability Evaluation of Architectural Models of Critical Infrastructures

    In this paper, the authors introduce MIOA, a stochastic process algebra-like specification language with finite-domain datatypes, as well as the logic intSPDL, and its model checking algorithms. MIOA which stands for Markovian input/output automata language is an extension of Lynch's input/output automata with Markovian timed transitions. MIOA can serve both...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    An Interactive, Source-Centric, Open Testbed for Developing and Profiling Wireless Sensor Systems

    The difficulty of developing wireless sensor systems is widely recognized. Problems associated with testing, debugging, and profiling are key contributing factors. While network simulators have proven useful, they are unable to capture the subtleties of underlying hardware, nor the dynamics of wireless signal propagation and interference; and physical experimentation remains...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Data Capacity Improvement of Wireless Sensor Networks Using Non-Uniform Sensor Distribution

    Energy conservation is an important design consideration for battery powered Wireless Sensor NETworks (WSNET). Energy constraint in WSNETs limits the total amount of sensed data (data capacity) received by sinks. In the commonly used static model of sensor networks with uniformly distributed homogenous sensors with a stationary sink, sensors close...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Video-Assisted Global Positioning in Terrain Navigation with Known Landmarks

    The authors present a rigorous geometric analysis of the computation of the global positions of an airborne video camera and ground based objects using aerial images of known landmarks. This has also been known as the Perspective-n-Point (PnP) problem. A robust Hough transform-like method, facilitated by a class of CORDIC-structured...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Range-Free Localization with Aerial Anchors in Wireless Sensor Networks

    Localization is one of the essential issues in wireless sensor networks. Randomly deployed sensor nodes that do not own any positioning device need to determine their locations for further purposes. Range-based schemes typically utilize extra hardware to provide higher accuracy based on either node-to-node distances or angles. On the other...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Coverage Strategies in Wireless Sensor Networks

    An energy efficient cover of a region using Wireless Sensor Networks (WSNs) is addressed in this paper. Sensor nodes in a WSN are characterized by limited power and computational capabilities, and are expected to function for extended periods of time with minimal human intervention. The life span of such networks...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    The Sleep Deprivation Attack in Sensor Networks: Analysis and Methods of Defense

    The ability of sensor nodes to enter a low power sleep mode is very useful for extending network longevity. The authors show how adversary nodes can exploit clustering algorithms to ensure their selection as cluster heads for the purpose of launching attacks that prevent victim nodes from sleeping. They present...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Energy Restrained Data Dissemination in Wireless Sensor Networks

    Wireless sensor nodes can be mobile within a chosen area and communicate with neighboring nodes in the bounds of protocol limits. Since communications among all network components in sensor networks are wireless, a peer-to-peer protocol is employed between two nodes. Among many concerns about design of sensor networks are growing...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    A State Machine Sensor Network for Ephemeral Stream Detection

    Sensor networks based on the de facto standard Berkeley TinyOS platform are changing the way environmental information is collected in the field. One such network has been designed, deployed, and tested in order to determine where ephemeral streams (small, temporary channels of runoff) form during precipitation events. This small, proof-of-concept...

    Provided By Taylor & Francis Group

  • White Papers // Jun 2010

    On the Hardware Implementation Cost of Crypto-Processors Architectures

    A variety of modern technologies such as networks, Internet, and electronic services demand private and secure communications for a great number of everyday transactions. Security and cryptography provide a huge set of primitives, methods, and operation modes to support the special needs of data transmission. This paper aims to introduce...

    Provided By Taylor & Francis Group

  • White Papers // Mar 2010

    Energy Efficient Residual Energy Monitoring in Wireless Sensor Networks

    A crucial issue in the management of sensor networks is the continuous monitoring of residual energy level of the sensors in the network. With the large number of sensors in a typical network, the energy monitoring process can itself be very energy intensive. In this paper, the authors propose a...

    Provided By Taylor & Francis Group

  • White Papers // Mar 2010

    Imaging-Based Thermal Modelling and Reverse Engineering of As-Built Automotive Components: A Case Study

    Virtual prototyping of objects with thermal characteristic requirements depends on several aspects such as the geometry of the component, material properties, and ambient environmental conditions and most importantly temperature curves/heat patterns of the component when functional. In this case study, the authors present the data acquisition methodology towards thermal modeling...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Delay Sensitive, Energy Efficient and Fault Tolerant Distributed Slot Assignment Algorithm for Wireless Sensor Networks Under Convergecast Data Traffic

    The scarcest resource for most of the Wireless Sensor Networks (WSNs) is energy and the major factor in energy consumption for WSNs is communication. Not only transmission, but also reception is the source of energy consumption. The lore to decrease energy consumption is to turn off the radio circuit when...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Improved Key Predistribution Scheme in Wireless Sensor Networks Using Cell Splitting in Hexagonal Grid Based Deployment Model

    Security in wireless sensor networks is an upcoming field which is quite different from traditional network security mechanisms. Many applications are dependent on the secure operation of a wireless sensor network, and have serious effects if the network is disrupted. Therefore, it is necessary to protect communication between sensor nodes....

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Node Security in Hierarchical Sensor Networks: Distribution of Functions Versus Keys

    Secure communication involving cluster heads in a sensor network is vital as they are responsible for data aggregation and for taking important decisions in their groups. In this paper, the authors propose a scheme for secure communication via such nodes in a sensor network. In their approach, the base station...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Contour Guided Dissemination for Networked Embedded Systems

    Networked Embedded Systems have come to occupy an important role in emerging applications. Nodes in such a system are interconnected by a mesh topology. Despite the availability of multiple shortest paths between pairs of nodes, simulation results revealed that these paths cannot be effectively exploited by spreading the messages over...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Comparison of Petri Net and Finite State Machine Discrete Event Control of Distributed Surveillance Network

    Wireless sensor networks are an important military technology with civil and scientific applications. In this paper, they derive a discrete event controller system for distributed surveillance networks that consists of three interacting hierarchies - sensing, communications, and command. Petri Net representations of the hierarchies provide plant models of resource contention...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Improved Algorithms for Data-Gathering Time in Sensor Networks II: Ring

    The authors address the problem of gathering information in sensor webs consisting of sensors nodes, wherein a round of communication sensor nodes have messages to be sent to a distant central node (called the base station) over the shortest path. There is a wide range of data gathering applications like...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Statistical Estimation and Adaptation for Visual Compensation in Object Tracking

    The multi-modal tracking model enables the on-the-fly error compensation with low complexity by adopting acoustic sensors for the main tracking task and visual sensors for correcting possible tracking errors. The visual compensation process in the model is indispensable to the accurate tracking task in a dynamic object movement. This paper...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Hierarchical Numbering Based Addressing and Stateless Routing Scheme for Wireless Sensor Networks

    Due to energy and other relevant constraints, addressing of nodes and data routing techniques in sensor networks differ significantly from other networks. In this paper, the authors present an energy-efficient addressing and stateless routing paradigm for wireless sensor networks. They propose a dynamic and globally unique address allocation scheme for...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Adaptive Distributed Fair Scheduling for Multiple Channels in Wireless Sensor Networks

    A novel Adaptive and Distributed Fair Scheduling (ADFS) scheme for Wireless Sensor Networks (WSN) in the presence of Multiple Channels (MC-ADFS) is developed. The proposed MC-ADFS increases available network capacity and focuses on Quality-of-Service (QoS) issues. When nodes access a shared channel, the proposed MC-ADFS allocates the channel bandwidth proportionally...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Real-Time Communications for Wireless Sensor Networks: A Two-Tiered Architecture

    While many approaches have been proposed to deal with energy/latency trade-offs, they are likely to be insufficient for the applications where reduced delay guarantee is the main concern. In this paper, the authors investigated the potential application of a decentralized two-tiered network architecture, in large-scale wireless sensor networks, where an...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Suppressing Temporal Data in Sensor Networks Using a Scheme Robust to Aberrant Readings

    The main goal of a data collection protocol for sensor networks is to keep the network's database updated while saving the nodes' energy as much as possible. To achieve this goal without continuous reporting, data suppression is a key strategy. The basic idea behind data suppression schemes is to send...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Energy Efficient, Delay Sensitive, Fault Tolerant Wireless Sensor Network for Military Monitoring

    In this paper, a new TDMA based Wireless Sensor Network (WSN), MILMON, is proposed for military monitoring. The most important design considerations of MILMON are energy consumption, delay, scalability, and fault tolerance. There are three main components of the system: a new time synchronization schema based on the sink with...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Detection Capabilities of Randomly-Deployed Sensor Fields

    Distributed sensor fields have recently gained popularity as a means for detecting intruders moving through a protected area of the ocean. The authors characterize the detection capabilities of a network of randomly-deployed sensors with varying sensing capabilities. They develop a framework for analytically approximating the probability that such a sensor...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Dynamics of Wireless Sensor Networks

    Power-Law topology has been proved to be an effective technique to improve fault tolerance. With the motivation of construct reliable topology for wireless sensor networks, a Power-Law Evolving Model (PLEW) of wireless sensor networks by stochastic placement is proposed in this paper. In a dynamic evolving process of Wireless Sensor...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    An Analog VLSI Architecture for High Speed

    Using a two-dimension array of MOSFET switches, a robust, high speed object tracking CMOS sensor is presented. The edges of the image scene are extracted by the in-pixel differential comparators and a region (object) of interest, which is selected by the user, is segmented using the switch network. Tracking is...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Revisiting Key Predistribution Using Transversal Designs for a Grid-Based Deployment Scheme

    The authors consider a grid-based deployment scheme in which keys are predistributed in sensor nodes following a transversal design. This scheme was first proposed by Ruj, Maitra, and Roy. In their scheme the RF region was considered to be the a square of appropriate dimension. In this paper, they consider...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Optimizing Energy-Efficient Reconstruction of Mobile Point Source in Sensor Networks

    To obtain accurate information about the interested physical phenomenon, many nodes should be deployed and collaborated to extract data about the event source. This paper proposes a Low Power Self Scheduling protocol for mobile point source reconstruction. The motivation is clear, to provide high level QoS (reconstruction distortion) and reduce...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    An Enhanced CPA Algorithm for Real-Time Target Tracking in Wireless Sensor Networks

    Real-time tracking of moving targets using wireless sensor networks has been a challenging problem because of the high velocity of the targets and the limited resources of the sensors. CPA (Closest Point of Approach) algorithms are appropriate for tracking fast-moving targets since the tracking error is roughly inversely proportional to...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Passive Sensor Based Multiple Objects Tracking and Association Method in Wireless Sensor Networks

    This paper presents a method for dynamic data association in wireless sensor networks and addresses the issue of multiple objects tracking. The sensor node used in this paper incorporates RFID reader and an acoustic sensor so that two different signals are cooperating for tracking and associating multiple objects. The RFID...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    A Minimalist Path Detection Approach for Wireless Sensor Networks

    Most object tracking techniques find the exact locations of an object, while many other applications are only interested in the object's path rather than its locations. This provides an opportunity to reduce the existing tracking methods' resource usage by only focusing on the path detection. Taking advantage of this opportunity,...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    An Integrated Approach To New Food Product Development

    The increasingly competitive environment of the Consumer Packaged Goods (CPG) industry means more emphasis than ever will be placed on developing and sustaining new products. These must match both product functionality and consumer needs and desires in the most innovative way possible. Over the last decade, an accelerating number of...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    Fault Tolerant Evaluation of Continuous Selection Queries Over Sensor Data

    The authors consider the problem of evaluating continuous selection queries over sensor generated values in the presence of faults. Small sensors are fragile, have finite energy and memory, and communicate over a lossy medium; hence, tuples produced by them may not reach the querying node, resulting in an incomplete and...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    Energy-Efficient Dynamic Spatial Resolution Control for Wireless Sensor Clusters

    In very large-scale dense sensor network applications, more sensor nodes may be deployed than are required to provide the initial desired spatial resolution. Such over-deployment can extend network life, improve robustness, and accommodate network dynamic. To enable large deployments, tiered and clustered network structures may be adopted for scalability and...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    An Integrated Approach To New Food Product Development

    The increasingly competitive environment of the Consumer Packaged Goods (CPG) industry means more emphasis than ever will be placed on developing and sustaining new products. These must match both product functionality and consumer needs and desires in the most innovative way possible. Over the last decade, an accelerating number of...

    Provided By Taylor & Francis Group

  • White Papers // Mar 2010

    Energy Efficient Residual Energy Monitoring in Wireless Sensor Networks

    A crucial issue in the management of sensor networks is the continuous monitoring of residual energy level of the sensors in the network. With the large number of sensors in a typical network, the energy monitoring process can itself be very energy intensive. In this paper, the authors propose a...

    Provided By Taylor & Francis Group

  • White Papers // Mar 2010

    Imaging-Based Thermal Modelling and Reverse Engineering of As-Built Automotive Components: A Case Study

    Virtual prototyping of objects with thermal characteristic requirements depends on several aspects such as the geometry of the component, material properties, and ambient environmental conditions and most importantly temperature curves/heat patterns of the component when functional. In this case study, the authors present the data acquisition methodology towards thermal modeling...

    Provided By Taylor & Francis Group

  • White Papers // Dec 2010

    Identifying Influential Factors of Business Process Performance Using Dependency Analysis

    The authors present a comprehensive framework for identifying influential factors of business process performance. In particular, the approach combines monitoring of process events and Quality of Service (QoS) measurements with dependency analysis to effectively identify influential factors. The framework uses data mining techniques to construct tree structures to represent dependencies...

    Provided By Taylor & Francis Group

  • White Papers // Oct 2010

    Forecasting And Combining Competing Models Of Exchange Rate Determination

    This paper investigates the out-of-sample forecast performance of a set of competing models of exchange rate determination. The authors compare standard linear models with models that characterize the relationship between exchange rate and the underlying fundamentals by nonlinear dynamics. Linear models tend to outperform at short forecast horizons especially when...

    Provided By Taylor & Francis Group

  • White Papers // Jun 2011

    Spatial Cloud Computing: How Can the Geospatial Sciences Use and Help Shape Cloud Computing?

    The geospatial sciences face grand Information Technology (IT) challenges in the twenty-first century: data intensity, computing intensity, concurrent access intensity and spatiotemporal intensity. These challenges require the readiness of a computing infrastructure that can: better support discovery, access and utilization of data and data processing so as to relieve scientists...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    Fault Tolerant Evaluation of Continuous Selection Queries Over Sensor Data

    The authors consider the problem of evaluating continuous selection queries over sensor generated values in the presence of faults. Small sensors are fragile, have finite energy and memory, and communicate over a lossy medium; hence, tuples produced by them may not reach the querying node, resulting in an incomplete and...

    Provided By Taylor & Francis Group

  • White Papers // Jun 2010

    On the Hardware Implementation Cost of Crypto-Processors Architectures

    A variety of modern technologies such as networks, Internet, and electronic services demand private and secure communications for a great number of everyday transactions. Security and cryptography provide a huge set of primitives, methods, and operation modes to support the special needs of data transmission. This paper aims to introduce...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2011

    Combining RFID With Ontologies to Create Smart Objects

    Radio Frequency IDentification (RFID) technology has long been known for its ability to uniquely identify objects. Recent years have witnessed a significant increase in storage capacity on the tag, which is giving rise to a new set of application scenarios. As the tag itself can carry relevant context information, processes...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Improved Key Predistribution Scheme in Wireless Sensor Networks Using Cell Splitting in Hexagonal Grid Based Deployment Model

    Security in wireless sensor networks is an upcoming field which is quite different from traditional network security mechanisms. Many applications are dependent on the secure operation of a wireless sensor network, and have serious effects if the network is disrupted. Therefore, it is necessary to protect communication between sensor nodes....

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Data Capacity Improvement of Wireless Sensor Networks Using Non-Uniform Sensor Distribution

    Energy conservation is an important design consideration for battery powered Wireless Sensor NETworks (WSNET). Energy constraint in WSNETs limits the total amount of sensed data (data capacity) received by sinks. In the commonly used static model of sensor networks with uniformly distributed homogenous sensors with a stationary sink, sensors close...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Video-Assisted Global Positioning in Terrain Navigation with Known Landmarks

    The authors present a rigorous geometric analysis of the computation of the global positions of an airborne video camera and ground based objects using aerial images of known landmarks. This has also been known as the Perspective-n-Point (PnP) problem. A robust Hough transform-like method, facilitated by a class of CORDIC-structured...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Range-Free Localization with Aerial Anchors in Wireless Sensor Networks

    Localization is one of the essential issues in wireless sensor networks. Randomly deployed sensor nodes that do not own any positioning device need to determine their locations for further purposes. Range-based schemes typically utilize extra hardware to provide higher accuracy based on either node-to-node distances or angles. On the other...

    Provided By Taylor & Francis Group

  • White Papers // May 2011

    Probabilistic Verification of Architectural Software Models Using SoftArc and Prism

    In this paper, the authors will describe the SoftArc approach. With the SoftArc approach it is possible to model and analyze safety-critical embedded and distributed systems that consist of both hard- and software. They are going to present the SoftArc modelling language, its syntax and semantics. The semantics of the...

    Provided By Taylor & Francis Group

  • White Papers // Aug 2010

    Formal Performability Evaluation of Architectural Models of Critical Infrastructures

    In this paper, the authors introduce MIOA, a stochastic process algebra-like specification language with finite-domain datatypes, as well as the logic intSPDL, and its model checking algorithms. MIOA which stands for Markovian input/output automata language is an extension of Lynch's input/output automata with Markovian timed transitions. MIOA can serve both...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Delay Sensitive, Energy Efficient and Fault Tolerant Distributed Slot Assignment Algorithm for Wireless Sensor Networks Under Convergecast Data Traffic

    The scarcest resource for most of the Wireless Sensor Networks (WSNs) is energy and the major factor in energy consumption for WSNs is communication. Not only transmission, but also reception is the source of energy consumption. The lore to decrease energy consumption is to turn off the radio circuit when...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Node Security in Hierarchical Sensor Networks: Distribution of Functions Versus Keys

    Secure communication involving cluster heads in a sensor network is vital as they are responsible for data aggregation and for taking important decisions in their groups. In this paper, the authors propose a scheme for secure communication via such nodes in a sensor network. In their approach, the base station...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Contour Guided Dissemination for Networked Embedded Systems

    Networked Embedded Systems have come to occupy an important role in emerging applications. Nodes in such a system are interconnected by a mesh topology. Despite the availability of multiple shortest paths between pairs of nodes, simulation results revealed that these paths cannot be effectively exploited by spreading the messages over...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Comparison of Petri Net and Finite State Machine Discrete Event Control of Distributed Surveillance Network

    Wireless sensor networks are an important military technology with civil and scientific applications. In this paper, they derive a discrete event controller system for distributed surveillance networks that consists of three interacting hierarchies - sensing, communications, and command. Petri Net representations of the hierarchies provide plant models of resource contention...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Improved Algorithms for Data-Gathering Time in Sensor Networks II: Ring

    The authors address the problem of gathering information in sensor webs consisting of sensors nodes, wherein a round of communication sensor nodes have messages to be sent to a distant central node (called the base station) over the shortest path. There is a wide range of data gathering applications like...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Statistical Estimation and Adaptation for Visual Compensation in Object Tracking

    The multi-modal tracking model enables the on-the-fly error compensation with low complexity by adopting acoustic sensors for the main tracking task and visual sensors for correcting possible tracking errors. The visual compensation process in the model is indispensable to the accurate tracking task in a dynamic object movement. This paper...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Hierarchical Numbering Based Addressing and Stateless Routing Scheme for Wireless Sensor Networks

    Due to energy and other relevant constraints, addressing of nodes and data routing techniques in sensor networks differ significantly from other networks. In this paper, the authors present an energy-efficient addressing and stateless routing paradigm for wireless sensor networks. They propose a dynamic and globally unique address allocation scheme for...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    Energy-Efficient Dynamic Spatial Resolution Control for Wireless Sensor Clusters

    In very large-scale dense sensor network applications, more sensor nodes may be deployed than are required to provide the initial desired spatial resolution. Such over-deployment can extend network life, improve robustness, and accommodate network dynamic. To enable large deployments, tiered and clustered network structures may be adopted for scalability and...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    Data Gathering Schedule for Minimal Aggregation Time in Wireless Sensor Networks

    Data aggregation promises a new paradigm for gathering data via collaboration among wireless sensors deployed over a large geographical region. Many real-time applications impose stringent delay requirements and ask for time-efficient schedules of data gathering in which data sensed at sensors are aggregated at intermediate sensors along the way towards...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    Coverage and Reliability of Randomly Distributed Sensor Systems with Heterogeneous Detection Range

    In this paper, the authors examine the coverage and reliability of distributed sensor networks that are designed for surveillance applications. In particular, they examine a model of sensor network coverage based on Poisson processes, and illustrate how this model combines with standard reliability models to provide estimates of field degradation...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2009

    Distributed Phased Arrays and Wireless Beamforming Networks

    Distributed phased arrays have advantages over conventional arrays in many radar and communication applications. Additional advantages are realized by replacing the microwave beamforming circuit by a wireless network, thus forming a wirelessly networked distributed sensor array. This paper examines various aspects of a distributed phased array that incorporates wireless beamforming....

    Provided By Taylor & Francis Group

  • White Papers // May 2009

    The Design of an Environment for Monitoring and Controlling Remote Sensor Networks

    In this paper, the authors present the design of jWebDust, a software environment for monitoring and controlling sensor networks via a web interface. Our software architecture provides a range of services that allow to create customized applications with minimum implementation effort that are easy to administrate. They present its open...

    Provided By Taylor & Francis Group

  • White Papers // May 2009

    Adaptive Sensor Activity Scheduling in Distributed Sensor Networks: A Statistical Mechanics Approach

    This paper presents an algorithm for Adaptive Sensor Activity Scheduling (A-SAS) in distributed sensor networks to enable detection and dynamic footprint tracking of spatial-temporal events. The sensor network is modeled as a Markov random field on a graph, where concepts of Statistical Mechanics are employed to stochastically activate the sensor...

    Provided By Taylor & Francis Group

  • White Papers // May 2009

    A Service-Based Entropic Model for Sensors Orchestration

    Naval research programs are focusing on a distributed architecture approach for successful migration of data from one region to another. This presents a challenging area of modeling and managing the distributed approaches. This article describes a service-based model, which comprises of two steps that are decomposition and orchestration, for effectively...

    Provided By Taylor & Francis Group

  • White Papers // May 2009

    Clone Detection in Sensor Networks with Ad Hoc and Grid Topologies

    In cloning attacks, an adversary captures a sensor node, reprograms it, makes multiple copies, and inserts these copies, into the network. Cloned nodes subvert sensor network processing from within. In a companion paper, the authors show how to detect and remove clones from sensor networks using random key predistribution security...

    Provided By Taylor & Francis Group

  • White Papers // May 2009

    Sensor Network Self-Organization Using Random Graphs

    Sensor networks are deployed in, and react with, chaotic environments. Self-organizing peer-to-peer networks have admirable survivability characteristics. This paper discusses random network formalisms for designing, modeling, and analyzing survivable sensor networks. Techniques are given for determining critical values. Applications in system security and surveillance networks are given. RANDOM graph theory...

    Provided By Taylor & Francis Group

  • White Papers // May 2009

    Power Assignment for Symmetric Communication in Wireless Sensor Networks

    The authors show that two incremental power heuristics for power assignment in a wireless sensor network have an approximation ratio 2. Enhancements to these heuristics are proposed. It is shown that these enhancements do not reduce the approximation ratio of the considered incremental power heuristics. However, experiments conducted by them...

    Provided By Taylor & Francis Group

  • White Papers // May 2009

    Adaptive Optimizations for Surveillance Sensor Network Longevity

    Sensor networks are typically wireless networks composed of resource-constrained battery powered devices. In this paper, the authors present a criterion for determining whether or not a surveillance sensor network is viable. They use this criterion to compare methods for extending the effective lifetime of the sensor network. The life extension...

    Provided By Taylor & Francis Group

  • White Papers // May 2009

    Multicast Encryption Infrastructure for Security in Sensor Networks

    Designing secure sensor networks is difficult. The authors propose an approach that uses multicast communications and requires fewer encryptions than pairwise communications. The network is partitioned into multicast regions; each region is managed by a sensor node chosen to act as a keyserver. The keyservers solicit nodes in their neighborhood...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    An Interactive, Source-Centric, Open Testbed for Developing and Profiling Wireless Sensor Systems

    The difficulty of developing wireless sensor systems is widely recognized. Problems associated with testing, debugging, and profiling are key contributing factors. While network simulators have proven useful, they are unable to capture the subtleties of underlying hardware, nor the dynamics of wireless signal propagation and interference; and physical experimentation remains...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Coverage Strategies in Wireless Sensor Networks

    An energy efficient cover of a region using Wireless Sensor Networks (WSNs) is addressed in this paper. Sensor nodes in a WSN are characterized by limited power and computational capabilities, and are expected to function for extended periods of time with minimal human intervention. The life span of such networks...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    The Sleep Deprivation Attack in Sensor Networks: Analysis and Methods of Defense

    The ability of sensor nodes to enter a low power sleep mode is very useful for extending network longevity. The authors show how adversary nodes can exploit clustering algorithms to ensure their selection as cluster heads for the purpose of launching attacks that prevent victim nodes from sleeping. They present...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    Energy Restrained Data Dissemination in Wireless Sensor Networks

    Wireless sensor nodes can be mobile within a chosen area and communicate with neighboring nodes in the bounds of protocol limits. Since communications among all network components in sensor networks are wireless, a peer-to-peer protocol is employed between two nodes. Among many concerns about design of sensor networks are growing...

    Provided By Taylor & Francis Group

  • White Papers // Jul 2010

    A State Machine Sensor Network for Ephemeral Stream Detection

    Sensor networks based on the de facto standard Berkeley TinyOS platform are changing the way environmental information is collected in the field. One such network has been designed, deployed, and tested in order to determine where ephemeral streams (small, temporary channels of runoff) form during precipitation events. This small, proof-of-concept...

    Provided By Taylor & Francis Group

  • White Papers // Nov 2009

    Adaptive Distributed Fair Scheduling for Multiple Channels in Wireless Sensor Networks

    A novel Adaptive and Distributed Fair Scheduling (ADFS) scheme for Wireless Sensor Networks (WSN) in the presence of Multiple Channels (MC-ADFS) is developed. The proposed MC-ADFS increases available network capacity and focuses on Quality-of-Service (QoS) issues. When nodes access a shared channel, the proposed MC-ADFS allocates the channel bandwidth proportionally...

    Provided By Taylor & Francis Group