University of Florida

Displaying 1-40 of 88 results

  • White Papers // Jul 2012

    Optimal Resource Rental Planning for Elastic Applications in Cloud Market

    This paper studies the optimization problem of minimizing resource rental cost for running elastic applications in cloud while meeting application service requirements. Such a problem arises when excessive generated data incurs significant monetary cost on transfer and inventory in cloud. The goal of planning is to make resource rental decisions...

    Provided By University of Florida

  • White Papers // May 2012

    IncMR: Incremental Data Processing Based on MapReduce

    MapReduce programming model is widely used for large scale and one-time data-intensive distributed computing, but lacks flexibility and efficiency of processing small incremental data. IncMR framework is proposed in this paper for incrementally processing new data of a large data set, which takes state as implicit input and combines it...

    Provided By University of Florida

  • White Papers // May 2012

    MagicLink: Weaving Multi-SiteWireless Sensor Networks for Large-Scale Experiments

    Despite the promising vision of pervasive sensor networks of thou-sands of nodes, conducting such large-scale experiments on demand is still far from reality due to the limitations of resources, space, and maintenance. To ad-dress such challenges, the authors propose the MagicLink middleware to "Magically" weave geographically distributed sensor networks into...

    Provided By University of Florida

  • White Papers // Jan 2012

    Privacy-Preserving RFID Authentication Based on Cryptographical Encoding

    Radio Frequency IDentification (RFID) technology has been adopted in many applications, such as inventory control, object tracking, theft prevention, and supply chain management. Privacy-preserving authentication in RFID systems is a very important problem. Existing protocols employ tree structures to achieve fast authentication. The authors observe that these protocols require a...

    Provided By University of Florida

  • White Papers // Jan 2012

    Origin-Destination Flow Measurement in High-Speed Networks

    An Origin-Destination (OD) flow between two routers is the set of packets that pass both routers in a network. Measuring the sizes of OD flows is important to many network management applications such as capacity planning, traffic engineering, anomaly detection, and network reliability analysis. Measurement efficiency and accuracy are two...

    Provided By University of Florida

  • White Papers // Dec 2011

    Traffic-Aware Multiple Mix Zone Placement for Protecting Location Privacy

    Privacy protection is of critical concern to Location-Based Service (LBS) users in mobile networks. Long-term pseudonyms, although appear to be anonymous, in fact empower third-party service providers to continuously track users' movements. Researchers have proposed the mix zone model to allow pseudonym changes in protected areas. In this paper, the...

    Provided By University of Florida

  • White Papers // Sep 2011

    VPFS: Bandwidth Virtualization of Parallel Storage Systems

    This paper presents vPFS, a new parallel file system performance management approach to support the allocation of shared storage bandwidth on a per-application basis. Existing parallel file systems are unable to differentiate I/O requests from different applications and meet per-application bandwidth requirements. This limitation presents an increasing hurdle for applications...

    Provided By University of Florida

  • White Papers // Sep 2011

    Improved Estimation of Transmission Distortion for Error-Resilient Video Coding

    This paper presents an improved technique for estimating the end-to-end distortion, which includes both quantization error after encoding and random transmission error, after transmission in video communication systems. The proposed technique mainly differs from most existing techniques in that it takes into account filtering operations, e.g. interpolation in subpixel motion...

    Provided By University of Florida

  • White Papers // Sep 2011

    RED Theory for QoS Provisioning in Wireless Communications

    In this paper, the authors study the performance limit of a wireless communication system over a fading channel. The system under study consists of a finite-buffer discrete-time queueing system on the link layer, and a rate-adaptive channel coding system on the physical layer. The objective of this paper is to...

    Provided By University of Florida

  • White Papers // Aug 2011

    Mining Behavioral Groups Based on Usage Data in Large Wireless LANs

    Wireless networks and personalized mobile devices are deeply integrated and embedded in the lives. Such wide adoptions of new technologies will impact user behavior and in turn will affect network performance. It is imperative to characterize the fundamental structure of wireless user behavior in order to model, manage, leverage and...

    Provided By University of Florida

  • White Papers // Jul 2011

    Rate-Distortion Optimized Cross-Layer Rate Control in Wireless Video Communication

    A wireless video communication system can be designed based on the Rate-Distortion (R-D) criterion, i.e., minimizing the end-to-end distortion (which includes quantization distortion and transmission distortion) subject to the transmission bit-rate constraint. The minimization can be achieved by adjusting the source encoding parameters and channel encoding parameters. This R-D Optimization...

    Provided By University of Florida

  • White Papers // Jun 2011

    OLAP Formulations for Supporting Complex Spatial Objects in Data Warehouses

    In recent years, there has been a large increase in the amount of spatial data obtained from remote sensing, GPS receivers, communication terminals and other domains. Data warehouses help in modeling and mining large amounts of data from heterogeneous sources over an extended period of time. However incorporating spatial data...

    Provided By University of Florida

  • White Papers // May 2011

    CAL: A Generic Query and Analysis Language for Data Warehouses

    Data Warehouses (DWs) and OLAP systems are essential tools in organizational decision making. However, users of these systems are often provided with complex data models and system-specific GUIs and dashboards to analyze the data and generate reports. Available DW query languages like MDX and Oracle OLAP support only numeric data...

    Provided By University of Florida

  • White Papers // May 2011

    Computing the Cardinal Direction Development Between Moving Points in Spatio-Temporal Databases

    In the same way as moving objects can change their location over time, the spatial relationships between them can change over time. An important class of spatial relationships are cardinal directions like north and southeast. In spatial databases and GIS, they characterize the relative directional position between static objects in...

    Provided By University of Florida

  • White Papers // May 2011

    Fuzzy Modeling Based Resource Management for Virtualized Database Systems

    The hosting of databases on Virtual Machines (VMs) has great potential to improve the efficiency of resource utilization and the ease of deployment of database systems. This paper considers the problem of on-demand allocation of resources to a VM running a database serving dynamic and complex query workloads while meeting...

    Provided By University of Florida

  • White Papers // May 2011

    A Moving Objects Database Infrastructure for Hurricane Research: Data Integration and Complex Object Management

    Current web-based weather event and satellite data portals provide large amounts of data over a historical timeline. However, users of these portals often get access to data only through limited, pre-defined queries based on a strict set of criteria and event trajectories. Desirable capabilities, such as spatial-temporal analysis, efficient satellite...

    Provided By University of Florida

  • White Papers // Apr 2011

    Adaptive Virtual Resource Management With Fuzzy Model Predictive Control

    Virtualized systems such as utility datacenters and clouds are emerging as important new computing platforms with great potential to conveniently deliver computing across the Internet and efficiently utilize resources consolidated via virtualization. Resource management in virtualized systems remains a key challenge because of their intrinsically dynamic and complex nature, where...

    Provided By University of Florida

  • White Papers // Apr 2011

    Modeling and Querying Spatial Networks in Databases

    Infrastructures like transportation, power, and pipeline networks which are characterized by a spatial embedding are known as spatial networks. Spatial networks are ubiquitous in the everyday life and used in transport, navigation, and city planning as well as in Geographical Information Systems (GIS) and other geo-spatial applications. The largely increasing...

    Provided By University of Florida

  • White Papers // Apr 2011

    Towards Simulation of Parallel File System Scheduling Algorithms With PFSsim

    Many High-End Computing (HEC) centers and commercial data centers adopt parallel file systems (PFSs) as their storage solutions. As the number of applications concurrently accessing a PFS grows in both quantity and variety, it is expected that scheduling algorithms for data access will play an increasingly important role in PFS...

    Provided By University of Florida

  • White Papers // Mar 2011

    Trailing Mobile Sinks: A Proactive Data Reporting Protocol for Wireless Sensor Networks

    In Wireless Sensor Networks (WSN), data gathering using mobile sinks typically incurs constant propagation of sink location indication messages to guide the direction of data reporting. Such behavior is undesirable, especially when the sensor network scale increases, as frequent message flooding will cause serious congestion in network communication and significantly...

    Provided By University of Florida

  • White Papers // Feb 2011

    Detecting Separation in Robotic and Sensor Networks

    In this paper, the authors consider the problem of monitoring detecting separation of agents from a base station in robotic and sensor networks. Such separation can be caused by mobility and/or failure of the agents. While separation/cut detection may be performed by passing messages between a node and the base...

    Provided By University of Florida

  • White Papers // Jan 2011

    On the Requirements for User-Centric Spatial Data Warehousing and SOLAP

    Data warehouses and OLAP systems help to analyze complex multidimensional data and provide decision support. With the availability of large amounts of spatial data in recent years, several new models have been proposed to enable the integration of spatial data in data warehouses and to help analyze such data. This...

    Provided By University of Florida

  • White Papers // Jan 2011

    3D Indoor Route Planning for Arbitrary-Shape Objects

    Route planning, which is used to calculate feasible routes in a given environment, is one of the key issues in navigation systems. According to different constraints in different given space, various route planning strategies have been developed in recent years. Current route planning models for indoor space focus on providing...

    Provided By University of Florida

  • White Papers // Jan 2011

    Querying Moving Objects With Uncertainty in Spatio-Temporal Databases

    Spatio-temporal uncertainty is a special feature of moving objects due to the inability of precisely capturing or predicting their continuously changing locations. Indeterminate locations of moving objects at time instants add uncertainty to their topological relationships. Spatio-temporal uncertainty is important in many applications, for ex-ample, to determine whether two moving...

    Provided By University of Florida

  • White Papers // Jan 2011

    The Capacity of Three-Dimensional Wireless Ad Hoc Networks

    Network capacity investigation has been intensive in the past few years. A large body of work has appeared in the literature. However, so far most of the effort has been made on two-dimensional wireless networks only. With the great development of wireless technologies, wireless networks are envisioned to extend from...

    Provided By University of Florida

  • White Papers // Jan 2011

    Resilient Capacity-Aware Multicast Based on Overlay Networks

    The global deployment of IP multicast has been slow due to the difficulties related to heterogeneity, scalability, manageability, and lack of a robust inter-domain multicast routing protocol. Application-level multicast becomes a promising alternative. Many overlay multicast systems have been proposed in recent years. However, they are insufficient in supporting applications...

    Provided By University of Florida

  • White Papers // Nov 2010

    Virtualization-Based Bandwidth Management for Parallel Storage Systems

    This paper presents a new parallel storage management approach which supports the allocation of shared storage bandwidth on a per-application basis. Existing parallel storage systems are unable to differentiate I/Os from different applications and meet per-application bandwidth requirement. This limitation presents a hurdle for applications to achieve their desired performance,...

    Provided By University of Florida

  • White Papers // Sep 2010

    The 2007-09 Financial Crisis And Bank Opaqueness

    Doubts about the accuracy with which outside investors can assess a banking firm's value motivate many government interventions in the banking market. The recent financial crisis has reinforced concerns about the possibility that banks are unusually opaque. Yet the empirical evidence, thus far, is mixed. This paper examines the trading...

    Provided By University of Florida

  • White Papers // Aug 2010

    On the Design of Autonomic, Decentralized VPNs

    Decentralized and P2P (Peer-To-Peer) VPNs (Virtual Private Networks) have recently become quite popular for connecting users in small to medium collaborative environments, such as academia, businesses, and homes. In the realm of VPNs, there exist centralized, decentralized, and P2P solutions. Centralized systems require a single entity to provide and manage...

    Provided By University of Florida

  • White Papers // Aug 2010

    A Lightweight Dynamic Optimization Methodology for Wireless Sensor Networks

    Technological advancements in embedded systems due to Moore's law have lead to the proliferation of Wireless Sensor Networks (WSNs) in different application domains (e.g. defense, health care, surveillance systems) with different application requirements (e.g. lifetime, reliability). Many Commercial-Off-The-Shelf (COTS) sensor nodes can be specialized to meet these requirements using tunable...

    Provided By University of Florida

  • White Papers // Aug 2010

    Effective Capacity of a Correlated Nakagami-M Fading Channel

    The grail of next-generation wireless networks is providing real-time services for delay-sensitive applications, which require that the wireless networks provide QoS guarantees. The Effective Capacity (EC) proposed by Wu and Negi provides a powerful tool for design of QoS provisioning mechanisms. In this paper, the authors intend to generalize their...

    Provided By University of Florida

  • White Papers // Jul 2010

    Joint Routing and Link Scheduling for Cognitive Radio Networks Under Uncertain Spectrum Supply

    Booming growth of wireless networks and flourish of various wireless services have been witnessed in the past decade. In parallel with that, current static spectrum allocation policy of Federal Communications Commission (FCC) - results in the exhaustion of available spectrum, while a lot of licensed spectrum bands are extremely under-utilized....

    Provided By University of Florida

  • White Papers // Jul 2010

    On Multi-Link Failure Localization in All-Optical Networks

    Link failure localization has been an important and challenging problem for all-optical networks. The most general monitoring structure, called path-trial, is a light-path into which optical signals are launched and monitored. How to minimize the number of required path-trials is critical to the expense of this technique. Existing solutions are...

    Provided By University of Florida

  • White Papers // Jul 2010

    iBLOB: Complex Object Management in Databases Through Intelligent Binary Large Objects

    New emerging applications including genomic, multimedia, and geospatial technologies have necessitated the handling of complex application objects that are highly structured, large, and of variable length. Currently, such objects are handled using file system formats like HDF and NetCDF as well as the XML and BLOB data types in databases....

    Provided By University of Florida

  • White Papers // Jul 2010

    A One-Shot Dynamic Optimization Methodology for Wireless Sensor Networks

    Wireless Sensor Networks (WSNs), consisting of autonomous sensor nodes, have emerged as ubiquitous networks which span diverse application domains (e.g., health care, logistics, defense) each with varying application requirements (e.g., lifetime, throughput). Sensor nodes possess tunable parameters (e.g., processor voltage, sensing frequency), which enable platform specialization for particular application requirements....

    Provided By University of Florida

  • White Papers // Jul 2010

    Querying Vague Spatial Objects in Databases With VASA

    Recent years have been witness to the increasing efforts of scientists to design concepts and implementations that can adequately handle the vagueness and imprecision that is widespread in spatial data. Plenty of spatial entities, especially those that occur naturally such as mountains and biotopes, contain intrinsic vague attributes that make...

    Provided By University of Florida

  • White Papers // Jun 2010

    Addressing the P2P Bootstrap Problem for Small Overlay Networks

    Peer-To-Peer (P2P) overlays provide a framework for building distributed applications consisting of few to many resources with features including self-configuration, scalability, and resilience to node failures. Such systems have been successfully adopted in large-scale Internet services for content delivery networks, file sharing, and data storage. In small-scale systems, they can...

    Provided By University of Florida

  • White Papers // Jun 2010

    The Objects Interaction Graticule for Cardinal Direction Querying in Moving Objects Data Warehouses

    Cardinal directions have turned out to be very important qualitative spatial relations due to their numerous applications in spatial-way finding, GIS, qualitative spatial reasoning and in domains such as cognitive sciences, AI and robotics. They are frequently used as selection criteria in spatial queries. Moving objects data warehouses can help...

    Provided By University of Florida

  • White Papers // Jun 2010

    Similarity Analysis and Modeling in Mobile Societies: The Missing Link

    A new generation of "Behavior-aware" delay tolerant networks is emerging in what may define future mobile social networks. With the introduction of novel behavior-aware protocols, services and architectures, there is a pressing need to understand and realistically model mobile users behavioral characteristics, their similarity and clustering. Such models are essential...

    Provided By University of Florida

  • White Papers // May 2010

    BigCube:A Metamodel for Managing Multidimensional Data

    New emerging scientific applications in geosciences, sensor and spatio-temporal domains require adaptive analysis frameworks that can handle large datasets with multiple dimensions. However, existing conceptual design strategies for multidimensional data using the data warehousing framework are not suitable for users, since they involve complex extensions of traditional database design frameworks...

    Provided By University of Florida

  • White Papers // May 2012

    MagicLink: Weaving Multi-SiteWireless Sensor Networks for Large-Scale Experiments

    Despite the promising vision of pervasive sensor networks of thou-sands of nodes, conducting such large-scale experiments on demand is still far from reality due to the limitations of resources, space, and maintenance. To ad-dress such challenges, the authors propose the MagicLink middleware to "Magically" weave geographically distributed sensor networks into...

    Provided By University of Florida

  • White Papers // Jul 2012

    Optimal Resource Rental Planning for Elastic Applications in Cloud Market

    This paper studies the optimization problem of minimizing resource rental cost for running elastic applications in cloud while meeting application service requirements. Such a problem arises when excessive generated data incurs significant monetary cost on transfer and inventory in cloud. The goal of planning is to make resource rental decisions...

    Provided By University of Florida

  • White Papers // Jan 2012

    Privacy-Preserving RFID Authentication Based on Cryptographical Encoding

    Radio Frequency IDentification (RFID) technology has been adopted in many applications, such as inventory control, object tracking, theft prevention, and supply chain management. Privacy-preserving authentication in RFID systems is a very important problem. Existing protocols employ tree structures to achieve fast authentication. The authors observe that these protocols require a...

    Provided By University of Florida

  • White Papers // Jan 2012

    Origin-Destination Flow Measurement in High-Speed Networks

    An Origin-Destination (OD) flow between two routers is the set of packets that pass both routers in a network. Measuring the sizes of OD flows is important to many network management applications such as capacity planning, traffic engineering, anomaly detection, and network reliability analysis. Measurement efficiency and accuracy are two...

    Provided By University of Florida

  • White Papers // Jan 2009

    SCORES: A Scalable and Parametric Streams-Based Communication Architecture for Modular Reconfigurable Systems

    Parallel architectures have become an increasingly popular method in which to achieve high performance with low power consumption. In order to leverage these benefits, applications are decomposed into multiple computational modules (tasks) that collectively operate and communicate in parallel. In this paper, the authors present a scalable and highly parametric...

    Provided By University of Florida

  • White Papers // Mar 2009

    Exploiting Partially Reconfigurable FPGAs for Situation-Based Reconfiguration in Wireless Sensor Networks

    Wireless Sensor Networks (WSNs) are typically composed of very small, battery-operated devices (sensor nodes) containing simple microprocessors with few computational resources. However, the rapidly increasing popularity of WSNs has placed increased computational demands upon these systems, due to increasingly complex operating environments and enhanced data-sensing technology. Whereas introducing more powerful...

    Provided By University of Florida

  • White Papers // Dec 2009

    VAPRES: A Virtual Architecture for Partially Reconfigurable Embedded Systems

    Due to the runtime flexibility offered by Field Programmable Gate Arrays (FPGAs), FPGAs are popular devices for stream processing systems, since many stream processing applications require runtime adaptability (i.e. throughput, data transformations, etc.). FPGAs can offer this adaptability through runtime assembly of stream processing systems that are decomposed into hardware...

    Provided By University of Florida

  • White Papers // Jan 2011

    The Capacity of Three-Dimensional Wireless Ad Hoc Networks

    Network capacity investigation has been intensive in the past few years. A large body of work has appeared in the literature. However, so far most of the effort has been made on two-dimensional wireless networks only. With the great development of wireless technologies, wireless networks are envisioned to extend from...

    Provided By University of Florida

  • White Papers // Jul 2010

    Joint Routing and Link Scheduling for Cognitive Radio Networks Under Uncertain Spectrum Supply

    Booming growth of wireless networks and flourish of various wireless services have been witnessed in the past decade. In parallel with that, current static spectrum allocation policy of Federal Communications Commission (FCC) - results in the exhaustion of available spectrum, while a lot of licensed spectrum bands are extremely under-utilized....

    Provided By University of Florida

  • White Papers // May 2008

    Poster Abstract: Gender-Based Feature Analysis in Campus-Wide WLANs

    Rapid WLAN deployment has led to various research challenges and scenarios. In this paper, the authors come up with a technique to classify users into social groups and then use this information to investigate the usage behavior of these groups. Grouping of users can be done based on diverse parameters...

    Provided By University of Florida

  • White Papers // Aug 2011

    Mining Behavioral Groups Based on Usage Data in Large Wireless LANs

    Wireless networks and personalized mobile devices are deeply integrated and embedded in the lives. Such wide adoptions of new technologies will impact user behavior and in turn will affect network performance. It is imperative to characterize the fundamental structure of wireless user behavior in order to model, manage, leverage and...

    Provided By University of Florida

  • White Papers // Mar 2009

    Wireless Body Area Networks for Healthcare: A Feasibility Study

    The purpose of this feasibility study is to introduce wireless body area networks and also give an understanding of what possibilities and challenges there are when using short range wireless communications in this domain. The authors establish a prototype BAN system using Bluetooth technology and choose the ElectroCardioGram (ECG) signal...

    Provided By University of Florida

  • White Papers // Sep 2011

    RED Theory for QoS Provisioning in Wireless Communications

    In this paper, the authors study the performance limit of a wireless communication system over a fading channel. The system under study consists of a finite-buffer discrete-time queueing system on the link layer, and a rate-adaptive channel coding system on the physical layer. The objective of this paper is to...

    Provided By University of Florida

  • White Papers // Sep 2011

    Improved Estimation of Transmission Distortion for Error-Resilient Video Coding

    This paper presents an improved technique for estimating the end-to-end distortion, which includes both quantization error after encoding and random transmission error, after transmission in video communication systems. The proposed technique mainly differs from most existing techniques in that it takes into account filtering operations, e.g. interpolation in subpixel motion...

    Provided By University of Florida

  • White Papers // Feb 2011

    Detecting Separation in Robotic and Sensor Networks

    In this paper, the authors consider the problem of monitoring detecting separation of agents from a base station in robotic and sensor networks. Such separation can be caused by mobility and/or failure of the agents. While separation/cut detection may be performed by passing messages between a node and the base...

    Provided By University of Florida

  • White Papers // Dec 2011

    Traffic-Aware Multiple Mix Zone Placement for Protecting Location Privacy

    Privacy protection is of critical concern to Location-Based Service (LBS) users in mobile networks. Long-term pseudonyms, although appear to be anonymous, in fact empower third-party service providers to continuously track users' movements. Researchers have proposed the mix zone model to allow pseudonym changes in protected areas. In this paper, the...

    Provided By University of Florida

  • White Papers // Mar 2011

    Trailing Mobile Sinks: A Proactive Data Reporting Protocol for Wireless Sensor Networks

    In Wireless Sensor Networks (WSN), data gathering using mobile sinks typically incurs constant propagation of sink location indication messages to guide the direction of data reporting. Such behavior is undesirable, especially when the sensor network scale increases, as frequent message flooding will cause serious congestion in network communication and significantly...

    Provided By University of Florida

  • White Papers // Apr 2009

    On Approximation Algorithms for Interference-Aware Broadcast Scheduling in 2D and 3D Wireless Sensor Networks

    A Wireless Sensor Network (WSN) is a set of nodes deployed to sense some phenomena, collect information and send it to the base station for further processing on multi-hop paths. The sensor nodes in WSNs communicate via radio transmission. The broadcast nature of the radio transmission is called Wireless Broadcast...

    Provided By University of Florida

  • White Papers // Jul 2009

    Autonomic Resource Management for Virtualized Database Hosting Systems

    The hosting of databases on Virtual Machines (VMs) has great potential to improve the efficiency of resource utilization and the ease of deployment of database systems. This paper considers the problem of allocation of physical resources on demand to a database's VM according to QoS (Quality of Service) requirements. This...

    Provided By University of Florida

  • White Papers // Sep 2011

    VPFS: Bandwidth Virtualization of Parallel Storage Systems

    This paper presents vPFS, a new parallel file system performance management approach to support the allocation of shared storage bandwidth on a per-application basis. Existing parallel file systems are unable to differentiate I/O requests from different applications and meet per-application bandwidth requirements. This limitation presents an increasing hurdle for applications...

    Provided By University of Florida

  • White Papers // May 2011

    Fuzzy Modeling Based Resource Management for Virtualized Database Systems

    The hosting of databases on Virtual Machines (VMs) has great potential to improve the efficiency of resource utilization and the ease of deployment of database systems. This paper considers the problem of on-demand allocation of resources to a VM running a database serving dynamic and complex query workloads while meeting...

    Provided By University of Florida

  • White Papers // Apr 2011

    Adaptive Virtual Resource Management With Fuzzy Model Predictive Control

    Virtualized systems such as utility datacenters and clouds are emerging as important new computing platforms with great potential to conveniently deliver computing across the Internet and efficiently utilize resources consolidated via virtualization. Resource management in virtualized systems remains a key challenge because of their intrinsically dynamic and complex nature, where...

    Provided By University of Florida

  • White Papers // Apr 2011

    Towards Simulation of Parallel File System Scheduling Algorithms With PFSsim

    Many High-End Computing (HEC) centers and commercial data centers adopt parallel file systems (PFSs) as their storage solutions. As the number of applications concurrently accessing a PFS grows in both quantity and variety, it is expected that scheduling algorithms for data access will play an increasingly important role in PFS...

    Provided By University of Florida

  • White Papers // May 2012

    IncMR: Incremental Data Processing Based on MapReduce

    MapReduce programming model is widely used for large scale and one-time data-intensive distributed computing, but lacks flexibility and efficiency of processing small incremental data. IncMR framework is proposed in this paper for incrementally processing new data of a large data set, which takes state as implicit input and combines it...

    Provided By University of Florida

  • White Papers // Aug 2010

    On the Design of Autonomic, Decentralized VPNs

    Decentralized and P2P (Peer-To-Peer) VPNs (Virtual Private Networks) have recently become quite popular for connecting users in small to medium collaborative environments, such as academia, businesses, and homes. In the realm of VPNs, there exist centralized, decentralized, and P2P solutions. Centralized systems require a single entity to provide and manage...

    Provided By University of Florida

  • White Papers // Jun 2010

    Addressing the P2P Bootstrap Problem for Small Overlay Networks

    Peer-To-Peer (P2P) overlays provide a framework for building distributed applications consisting of few to many resources with features including self-configuration, scalability, and resilience to node failures. Such systems have been successfully adopted in large-scale Internet services for content delivery networks, file sharing, and data storage. In small-scale systems, they can...

    Provided By University of Florida

  • White Papers // Apr 2010

    OverSoc: Social Profile Based Overlays

    Online social networking has quickly become one of the most common Internet activities. As social networks evolve, they encourage users to share more information, requiring the users, in turn, to place more trust into social networks. In centralized systems, this means trusting a third-party commercial entity, like Facebook or MySpace....

    Provided By University of Florida

  • White Papers // Sep 2009

    Memory Efficient Protocols for Detecting Node Replication Attacks in Wireless Sensor Networks

    Sensor networks deployed in hostile areas are subject to node replication attacks, in which an adversary compromises a few sensors, extracts the security keys, and clones them in a large number of replicas, which are introduced into the network to perform insider attacks. Memory overhead, energy efficiency and detection probability...

    Provided By University of Florida

  • White Papers // Jan 2011

    Resilient Capacity-Aware Multicast Based on Overlay Networks

    The global deployment of IP multicast has been slow due to the difficulties related to heterogeneity, scalability, manageability, and lack of a robust inter-domain multicast routing protocol. Application-level multicast becomes a promising alternative. Many overlay multicast systems have been proposed in recent years. However, they are insufficient in supporting applications...

    Provided By University of Florida

  • White Papers // Sep 2010

    The 2007-09 Financial Crisis And Bank Opaqueness

    Doubts about the accuracy with which outside investors can assess a banking firm's value motivate many government interventions in the banking market. The recent financial crisis has reinforced concerns about the possibility that banks are unusually opaque. Yet the empirical evidence, thus far, is mixed. This paper examines the trading...

    Provided By University of Florida

  • White Papers // May 2010

    Energy-Conserving Scheduling in Multi-Hop Wireless Networks With Time-Varying Channels

    MaxWeight algorithm, a.k.a., back-pressure algorithm, has received much attention as a viable solution for dynamic link scheduling in multi-hop wireless networks. The basic principle of the MaxWeight algorithm is to select a set of interference-free links with the maximum overall link weights in the network, where the link weight is...

    Provided By University of Florida

  • White Papers // Jul 2010

    On Multi-Link Failure Localization in All-Optical Networks

    Link failure localization has been an important and challenging problem for all-optical networks. The most general monitoring structure, called path-trial, is a light-path into which optical signals are launched and monitored. How to minimize the number of required path-trials is critical to the expense of this technique. Existing solutions are...

    Provided By University of Florida

  • White Papers // Aug 2010

    A Lightweight Dynamic Optimization Methodology for Wireless Sensor Networks

    Technological advancements in embedded systems due to Moore's law have lead to the proliferation of Wireless Sensor Networks (WSNs) in different application domains (e.g. defense, health care, surveillance systems) with different application requirements (e.g. lifetime, reliability). Many Commercial-Off-The-Shelf (COTS) sensor nodes can be specialized to meet these requirements using tunable...

    Provided By University of Florida

  • White Papers // Jul 2010

    A One-Shot Dynamic Optimization Methodology for Wireless Sensor Networks

    Wireless Sensor Networks (WSNs), consisting of autonomous sensor nodes, have emerged as ubiquitous networks which span diverse application domains (e.g., health care, logistics, defense) each with varying application requirements (e.g., lifetime, throughput). Sensor nodes possess tunable parameters (e.g., processor voltage, sensing frequency), which enable platform specialization for particular application requirements....

    Provided By University of Florida

  • White Papers // Dec 2009

    Multi-Query Optimization in the Datapath System

    The Datapath system is a novel database that is implemented from the ground-up using a data-centric approach. In this paper, the author describes and evaluates a multi-query optimizer for the Datapath system. Unlike traditional multi-query optimizers that only try to overlap common sub-expressions, the author propose an efficient optimization algorithm...

    Provided By University of Florida

  • White Papers // May 2008

    mDNS - A Proposal for Hierarchical Multicast Session Directory Architecture

    Bandwidth in the Internet is constantly increasing. The last mile problem of the Internet has almost been solved. Multimedia has emerged as a dominant type of traffic on the Internet. Multicast is increasingly seen as the delivery vehicle of choice for multimedia streams. What has been the one true stumbling...

    Provided By University of Florida

  • White Papers // May 2009

    ELRR - Enhanced Limited Round Robin Mechanism Using Priority Policy Over Bluetooth Networks

    Bluetooth is a wireless communication technology that provides short-range, small-size, low-cost, and low-power connectivity among mobile devices. The MAC protocol for Bluetooth is based on a Time Division Duplex (TDD) scheme, where the master determines channel access to all other slaves in the piconet. Hence, the polling scheme used by...

    Provided By University of Florida

  • White Papers // Jan 2011

    3D Indoor Route Planning for Arbitrary-Shape Objects

    Route planning, which is used to calculate feasible routes in a given environment, is one of the key issues in navigation systems. According to different constraints in different given space, various route planning strategies have been developed in recent years. Current route planning models for indoor space focus on providing...

    Provided By University of Florida

  • White Papers // Mar 2010

    Supporting Continuous Range Queries in Indoor Space

    Range query processing is an important technology in spatial databases. Current studies mainly focus on range queries in outdoor space based on the Euclidean or network distances, but rarely any approach is proposed for indoor space. In this paper, the authors present two network-based approaches to supporting stationary range queries...

    Provided By University of Florida

  • White Papers // May 2011

    CAL: A Generic Query and Analysis Language for Data Warehouses

    Data Warehouses (DWs) and OLAP systems are essential tools in organizational decision making. However, users of these systems are often provided with complex data models and system-specific GUIs and dashboards to analyze the data and generate reports. Available DW query languages like MDX and Oracle OLAP support only numeric data...

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