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University of Florida
(115 results)-
White Papers
BigCube:A Metamodel for Managing Multidimensional Data
May 13, 2010, 12:00am PDT
New emerging scientific applications in geosciences, sensor and spatio-temporal domains require adaptive analysis frameworks that can handle large datasets with multiple dimensions. However,...
Provided by University of Florida
-
White Papers
Modeling and Querying Spatial Networks in Databases
April 16, 2011, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
The Objects Interaction Graticule for Cardinal Direction Querying in Moving Objects Data Warehouses
June 15, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
On the Requirements for User-Centric Spatial Data Warehousing and SOLAP
January 30, 2011, 12:00am PST
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...
Provided by University of Florida
-
White Papers
Soft Computing Techniques in Spatial Databases
September 11, 2009, 12:00am PDT
Spatial database systems and geographical information systems are currently only able to support geographical applications that deal with crisp spatial objects, that is, objects whose extent,...
Provided by University of Florida
-
White Papers
Spatial and Spatio-Temporal Data Models and Languages
November 22, 2007, 12:00am PST
A data model provides a formalism consisting of a notation for describing data of interest and of a set of operations for manipulating these data. It abstracts from reality and provides a...
Provided by University of Florida
-
White Papers
Spatial Data Types
January 4, 2008, 12:00am PST
Data types are a well known concept in computer science (for example, in programming languages or in database systems). A data type defines a set of homogeneous values and the allowable operations...
Provided by University of Florida
-
White Papers
Moving Objects in Databases and GIS: State-of-the-Art and Open Problems
April 27, 2009, 12:00am PDT
The field of moving objects databases (Güting and Schneider 2005) has received a lot of research interest in recent years. This technology enables the user to model, store, retrieve, and query the...
Provided by University of Florida
-
White Papers
Fuzzy Spatial Data Types for Spatial Uncertainty Management in Databases
June 19, 2007, 12:00am PDT
Spatial database systems and geographical information systems are currently only able to support geographical applications that deal with crisp spatial objects, that is, objects whose extent,...
Provided by University of Florida
-
White Papers
ROSA: An Algebra for Rough Spatial Objects in Databases
July 13, 2007, 12:00am PDT
A fundamental data modeling problem in geographical information systems and spatial database systems refers to an appropriate treatment of the vagueness or indeterminacy features of spatial...
Provided by University of Florida
-
White Papers
Moving Objects Database Technology for Ad-Hoc Querying and Satellite Data Retrieval of Dynamic Atmospheric Events
May 13, 2010, 12:00am PDT
Existing state-of-the-art and web-based weather event information portals, data archives, and forecast services provide excellent subsetting and visualizations of weather events and satellite...
Provided by University of Florida
-
White Papers
A Moving Objects Database Infrastructure for Hurricane Research: Data Integration and Complex Object Management
May 11, 2011, 12:00am PDT
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,...
Provided by University of Florida
-
White Papers
Querying Vague Spatial Objects in Databases With VASA
July 5, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Modeling Historical and Future Spatio-Temporal Relationships of Moving Objects in Databases
July 1, 2007, 12:00am PDT
Moving object databases have recently found large interest in the database community, geographical information systems, and geosciences. So far, moving object models have focused exclusively...
Provided by University of Florida
-
White Papers
Modeling Historical and Future Movements of Spatio-Temporal Objects in Moving Objects Databases
August 12, 2007, 12:00am PDT
Spatio-temporal databases deal with geometries changing over time. In general, geometries do not only change discretely but continuously; hence the authors are dealing with moving objects. In the...
Provided by University of Florida
-
White Papers
Ensuring the Semantic Correctness of Complex Regions
July 3, 2007, 12:00am PDT
Ensuring the semantic and topological correctness of spatial data is an important requirement in geographical information systems and spatial database systems in order to preserve spatial data...
Provided by University of Florida
-
White Papers
Querying Moving Objects With Uncertainty in Spatio-Temporal Databases
January 14, 2011, 12:00am PST
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...
Provided by University of Florida
-
White Papers
Plateau Regions: An Implementation Concept for Fuzzy Regions in Spatial Databases and GIS
April 13, 2010, 12:00am PDT
Many geographical applications need to model spatial phenomena with vague or indeterminate boundaries and interiors. A popular paradigm adopted by the GIS community for this task at the modeling...
Provided by University of Florida
-
White Papers
Computing the Cardinal Direction Development Between Moving Points in Spatio-Temporal Databases
May 23, 2011, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
The Objects Interaction Matrix for Modeling Cardinal Directions in Spatial Databases
December 1, 2009, 12:00am PST
Besides topological relations and approximate relations, cardinal directions have turned out to be an important class of qualitative spatial relations. In spatial databases and GIS they are...
Provided by University of Florida
-
White Papers
PLR Partitions: A Conceptual Model of Maps
July 3, 2007, 12:00am PDT
The traditional spatial data models model space in terms of points, lines, and regions. These models employ a disjoint dimension model in which a spatial object can only consist of a zero, one, or...
Provided by University of Florida
-
White Papers
Highly Compressed Aho-Corasick Automata for Efficient Intrusion Detection
March 25, 2008, 12:00am PDT
The authors develop a method to compress the unoptimized Aho-Corasick automaton that is used widely in intrusion detection systems. Their method uses bitmaps with multiple levels of summaries as...
Provided by University of Florida
-
White Papers
On the Design of Autonomic, Decentralized VPNs
August 30, 2010, 12:00am PDT
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,...
Provided by University of Florida
-
White Papers
Addressing the P2P Bootstrap Problem for Small Overlay Networks
June 20, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
OverSoc: Social Profile Based Overlays
April 14, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Memory Efficient Protocols for Detecting Node Replication Attacks in Wireless Sensor Networks
September 27, 2009, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Resilient Capacity-Aware Multicast Based on Overlay Networks
January 1, 2011, 12:00am PST
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....
Provided by University of Florida
-
White Papers
The 2007-09 Financial Crisis And Bank Opaqueness
September 30, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Energy-Conserving Scheduling in Multi-Hop Wireless Networks With Time-Varying Channels
May 5, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
On Multi-Link Failure Localization in All-Optical Networks
July 30, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Simplifying Resource Sharing in Voluntary Grid Computing With the Grid Appliance
January 28, 2008, 12:00am PST
Research projects in many fields are increasingly reliant on the use of computer-based simulation and computing grids. Many projects have successfully leveraged voluntary computing infrastructures...
Provided by University of Florida
-
White Papers
A Lightweight Dynamic Optimization Methodology for Wireless Sensor Networks
August 9, 2010, 12:00am PDT
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,...
Provided by University of Florida
-
White Papers
A One-Shot Dynamic Optimization Methodology for Wireless Sensor Networks
July 16, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
SCORES: A Scalable and Parametric Streams-Based Communication Architecture for Modular Reconfigurable Systems
January 21, 2009, 12:00am PST
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...
Provided by University of Florida
-
White Papers
Exploiting Partially Reconfigurable FPGAs for Situation-Based Reconfiguration in Wireless Sensor Networks
March 20, 2009, 12:00am PDT
Wireless Sensor Networks (WSNs) are typically composed of very small, battery-operated devices (sensor nodes) containing simple microprocessors with few computational resources. However, the...
Provided by University of Florida
-
White Papers
VAPRES: A Virtual Architecture for Partially Reconfigurable Embedded Systems
December 8, 2009, 12:00am PST
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...
Provided by University of Florida
-
White Papers
Do German Security Analysts Herd?
October 4, 2007, 12:00am PDT
In this paper, the authors employ an innovative new methodology suggested by Bernhardt et al. (2006) to examine the herding (or anti-herding) behavior of German analysts in case of earnings...
Provided by University of Florida
-
White Papers
The Capacity of Three-Dimensional Wireless Ad Hoc Networks
January 6, 2011, 12:00am PST
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...
Provided by University of Florida
-
White Papers
Joint Routing and Link Scheduling for Cognitive Radio Networks Under Uncertain Spectrum Supply
July 31, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Comparative Performance Analysis of Recent Powerline and Wireless Technologies for Multimedia Home Networking
December 17, 2007, 12:00am PST
This paper provides a comprehensive performance analysis of recent wireless and powerline technologies for home and small office environments. The recently developed 200Mpbs Powerline modems...
Provided by University of Florida
-
White Papers
A One-Shot Dynamic Optimization Methodology for Wireless Sensor Networks
July 16, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
A Lightweight Dynamic Optimization Methodology for Wireless Sensor Networks
August 9, 2010, 12:00am PDT
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,...
Provided by University of Florida
-
White Papers
Simplifying Resource Sharing in Voluntary Grid Computing With the Grid Appliance
January 28, 2008, 12:00am PST
Research projects in many fields are increasingly reliant on the use of computer-based simulation and computing grids. Many projects have successfully leveraged voluntary computing infrastructures...
Provided by University of Florida
-
White Papers
On Multi-Link Failure Localization in All-Optical Networks
July 30, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Energy-Conserving Scheduling in Multi-Hop Wireless Networks With Time-Varying Channels
May 5, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
The 2007-09 Financial Crisis And Bank Opaqueness
September 30, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Resilient Capacity-Aware Multicast Based on Overlay Networks
January 1, 2011, 12:00am PST
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....
Provided by University of Florida
-
White Papers
Memory Efficient Protocols for Detecting Node Replication Attacks in Wireless Sensor Networks
September 27, 2009, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
OverSoc: Social Profile Based Overlays
April 14, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Addressing the P2P Bootstrap Problem for Small Overlay Networks
June 20, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
On the Design of Autonomic, Decentralized VPNs
August 30, 2010, 12:00am PDT
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,...
Provided by University of Florida
-
White Papers
Highly Compressed Aho-Corasick Automata for Efficient Intrusion Detection
March 25, 2008, 12:00am PDT
The authors develop a method to compress the unoptimized Aho-Corasick automaton that is used widely in intrusion detection systems. Their method uses bitmaps with multiple levels of summaries as...
Provided by University of Florida
-
White Papers
PLR Partitions: A Conceptual Model of Maps
July 3, 2007, 12:00am PDT
The traditional spatial data models model space in terms of points, lines, and regions. These models employ a disjoint dimension model in which a spatial object can only consist of a zero, one, or...
Provided by University of Florida
-
White Papers
The Objects Interaction Matrix for Modeling Cardinal Directions in Spatial Databases
December 1, 2009, 12:00am PST
Besides topological relations and approximate relations, cardinal directions have turned out to be an important class of qualitative spatial relations. In spatial databases and GIS they are...
Provided by University of Florida
-
White Papers
Computing the Cardinal Direction Development Between Moving Points in Spatio-Temporal Databases
May 23, 2011, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Plateau Regions: An Implementation Concept for Fuzzy Regions in Spatial Databases and GIS
April 13, 2010, 12:00am PDT
Many geographical applications need to model spatial phenomena with vague or indeterminate boundaries and interiors. A popular paradigm adopted by the GIS community for this task at the modeling...
Provided by University of Florida
-
White Papers
Querying Moving Objects With Uncertainty in Spatio-Temporal Databases
January 14, 2011, 12:00am PST
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...
Provided by University of Florida
-
White Papers
Ensuring the Semantic Correctness of Complex Regions
July 3, 2007, 12:00am PDT
Ensuring the semantic and topological correctness of spatial data is an important requirement in geographical information systems and spatial database systems in order to preserve spatial data...
Provided by University of Florida
-
White Papers
Modeling Historical and Future Movements of Spatio-Temporal Objects in Moving Objects Databases
August 12, 2007, 12:00am PDT
Spatio-temporal databases deal with geometries changing over time. In general, geometries do not only change discretely but continuously; hence the authors are dealing with moving objects. In the...
Provided by University of Florida
-
White Papers
Modeling Historical and Future Spatio-Temporal Relationships of Moving Objects in Databases
July 1, 2007, 12:00am PDT
Moving object databases have recently found large interest in the database community, geographical information systems, and geosciences. So far, moving object models have focused exclusively...
Provided by University of Florida
-
White Papers
Querying Vague Spatial Objects in Databases With VASA
July 5, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
A Moving Objects Database Infrastructure for Hurricane Research: Data Integration and Complex Object Management
May 11, 2011, 12:00am PDT
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,...
Provided by University of Florida
-
White Papers
Moving Objects Database Technology for Ad-Hoc Querying and Satellite Data Retrieval of Dynamic Atmospheric Events
May 13, 2010, 12:00am PDT
Existing state-of-the-art and web-based weather event information portals, data archives, and forecast services provide excellent subsetting and visualizations of weather events and satellite...
Provided by University of Florida
-
White Papers
ROSA: An Algebra for Rough Spatial Objects in Databases
July 13, 2007, 12:00am PDT
A fundamental data modeling problem in geographical information systems and spatial database systems refers to an appropriate treatment of the vagueness or indeterminacy features of spatial...
Provided by University of Florida
-
White Papers
Fuzzy Spatial Data Types for Spatial Uncertainty Management in Databases
June 19, 2007, 12:00am PDT
Spatial database systems and geographical information systems are currently only able to support geographical applications that deal with crisp spatial objects, that is, objects whose extent,...
Provided by University of Florida
-
White Papers
Moving Objects in Databases and GIS: State-of-the-Art and Open Problems
April 27, 2009, 12:00am PDT
The field of moving objects databases (Güting and Schneider 2005) has received a lot of research interest in recent years. This technology enables the user to model, store, retrieve, and query the...
Provided by University of Florida
-
White Papers
Spatial Data Types
January 4, 2008, 12:00am PST
Data types are a well known concept in computer science (for example, in programming languages or in database systems). A data type defines a set of homogeneous values and the allowable operations...
Provided by University of Florida
-
White Papers
Spatial and Spatio-Temporal Data Models and Languages
November 22, 2007, 12:00am PST
A data model provides a formalism consisting of a notation for describing data of interest and of a set of operations for manipulating these data. It abstracts from reality and provides a...
Provided by University of Florida
-
White Papers
Soft Computing Techniques in Spatial Databases
September 11, 2009, 12:00am PDT
Spatial database systems and geographical information systems are currently only able to support geographical applications that deal with crisp spatial objects, that is, objects whose extent,...
Provided by University of Florida
-
White Papers
On the Requirements for User-Centric Spatial Data Warehousing and SOLAP
January 30, 2011, 12:00am PST
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...
Provided by University of Florida
-
White Papers
The Objects Interaction Graticule for Cardinal Direction Querying in Moving Objects Data Warehouses
June 15, 2010, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Modeling and Querying Spatial Networks in Databases
April 16, 2011, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
BigCube:A Metamodel for Managing Multidimensional Data
May 13, 2010, 12:00am PDT
New emerging scientific applications in geosciences, sensor and spatio-temporal domains require adaptive analysis frameworks that can handle large datasets with multiple dimensions. However,...
Provided by University of Florida
-
White Papers
OLAP Formulations for Supporting Complex Spatial Objects in Data Warehouses
June 10, 2011, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
CAL: A Generic Query and Analysis Language for Data Warehouses
May 25, 2011, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Supporting Continuous Range Queries in Indoor Space
March 8, 2010, 12:00am PST
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...
Provided by University of Florida
-
White Papers
3D Indoor Route Planning for Arbitrary-Shape Objects
January 28, 2011, 12:00am PST
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,...
Provided by University of Florida
-
White Papers
ELRR - Enhanced Limited Round Robin Mechanism Using Priority Policy Over Bluetooth Networks
May 1, 2009, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
mDNS - A Proposal for Hierarchical Multicast Session Directory Architecture
May 11, 2008, 12:00am PDT
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...
Provided by University of Florida
-
White Papers
Multi-Query Optimization in the Datapath System
December 1, 2009, 12:00am PST
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...
Provided by University of Florida
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