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University of Bonn
(20 results)-
White Papers
Integration and Visualization of Dynamic Sensor Data Into 3D Spatial Data Infrastructures in a Standardized Way
February 25, 2009, 12:00am PST
Integrating actual sensor data, such as weather or environmental information can improve the value of Geographical Information Systems (GIS) enormously. These applications are nowadays supported...
Provided by University of Bonn
-
White Papers
Improved Approximation Algorithms for the Quality of Service Multicast Tree Problem
January 1, 2010, 12:00am PST
This paper has considered a generalization of the Steiner problem in which each node possesses a rate and the cost of an edge. This paper have given improved approximation algorithms finding trees...
Provided by University of Bonn
-
White Papers
Implementation of Non-Java Based Interfaces to Embed Existing Models in Spatial Decision Support Systems - Case Study: Integration of Ms Excel-Models in Iwegs
June 7, 2008, 12:00am PDT
This paper shows the programming and usage of computer based interfaces to embed models in modern SDSSs. The special focus is on the development and implementation of non-Java based interfaces...
Provided by University of Bonn
-
White Papers
Social Capital, Ethnicity And Decision-Making In The Philippine Vegetable Market
September 1, 2007, 12:00am PDT
The paper tackles the issue of social capital as observed in several ethnically bonded groups of agricultural rural communities in the mountainous regions of northern Philippines. In the first...
Provided by University of Bonn
-
White Papers
Is Wine A Financial Parachute?
December 3, 2010, 12:00am PST
This paper analyzes the relationship between Global Wine Industry Share Price Indexes and composite stock market indexes using a Threshold Vector Error Correction Model (TVECM), aiming to...
Provided by University of Bonn
-
White Papers
Family Ownership, Financing Constraints And Investment Decisions
November 1, 2007, 12:00am PDT
This paper provides an empirical answer to the question of how the unique incentives of founding families influence investment decisions. Contrary to theoretical considerations, the results...
Provided by University of Bonn
-
White Papers
Convex Groups for Self-Organizing Multi-Sink Wireless Sensor Networks
August 24, 2009, 12:00am PDT
Mobile ad-hoc networks have long been proposed for rescue scenarios to support and coordinate the efforts of helpers. Low power wireless sensor networks are a natural extension of this approach....
Provided by University of Bonn
-
White Papers
Enlighten Me! Secure Key Assignment in Wireless Sensor Networks
March 31, 2009, 12:00am PDT
The availability of secret keys is a precondition for the use of many security solutions and protocols. However, securely assigning such keys to nodes is a challenging task in the context of...
Provided by University of Bonn
-
White Papers
On Boundary Recognition Without Location Information In Wireless Sensor Networks
February 12, 2008, 12:00am PST
Boundary recognition is an important and challenging issue in wireless sensor networks when no coordinates or distances are available. The distinction between inner and boundary nodes of the...
Provided by University of Bonn
-
White Papers
Time-Bounded and Space-Bounded Sensing in Wireless Sensor Networks
April 3, 2008, 12:00am PDT
Most papers on sensing in wireless sensor networks use only very simple sensors, e.g. humidity or temperature, to illustrate their concepts. However, in a large number of scenarios including...
Provided by University of Bonn
-
White Papers
Demo Abstract: Towards Interoperability Testing for Wireless Sensor Networks With COOJA/MSPSim
January 17, 2009, 12:00am PST
Wireless sensor networks are moving towards emerging standards such as IP, ZigBee and WirelessHART which makes interoperability testing important. Interoperability testing is today performed...
Provided by University of Bonn
-
White Papers
Optimal Casualty Insurance, Repair, And Regulation In The Presence Of A Securities Market
June 15, 2009, 12:00am PDT
Insurance regulation is often based on keeping probabilities of failure small and not on any explicit analysis of economic trade-offs. The authors build a simple economic model of optimal casualty...
Provided by University of Bonn
-
White Papers
Compressive Estimation of Doubly Selective Channels: Exploiting Channel Sparsity to Improve Spectral Efficiency in Multicarrier Transmissions
February 28, 2009, 12:00am PST
The authors consider the estimation of doubly selective wireless channels within pulse-shaping multicarrier systems (which include OFDM systems as a special case). A pilot-assisted channel...
Provided by University of Bonn
-
White Papers
A Classification Scheme for Update Propagation Methods in Deductive Databases
July 1, 2009, 12:00am PDT
Incremental view re-computation is a well-established research topic in deductive databases and plenty of update propagation methods have been proposed within the last two decades. All these...
Provided by University of Bonn
-
White Papers
Detecting Moving Objects in Noisy Radar Data Using a Relational Database
June 22, 2009, 12:00am PDT
In moving object databases, many authors assume that number and position of objects to be processed are always known in advance. Detecting an unknown moving object and pursuing its movement,...
Provided by University of Bonn
-
White Papers
SQL Triggers Reacting on Time Events: An Extension Proposal
June 22, 2009, 12:00am PDT
Being able to activate triggers at timepoints reached or after time intervals elapsed has been acknowledged by many authors as a valuable functionality of a DBMS. Recently, the interest in...
Provided by University of Bonn
-
White Papers
Data Stream Analysis for Location-Aware Collaborative Information Retrieval
May 14, 2008, 12:00am PDT
The authors propose a new approach for enhancing collaborative in-formation retrieval by means of incorporating positional data for a location-aware personalized retrieval process. In their...
Provided by University of Bonn
-
White Papers
A Transformation-Based Approach to View Updating in Stratifiable Deductive Databases
November 20, 2007, 12:00am PST
In this paper, the authors present a new rule-based approach for consistency preserving view updating in deductive databases. Based on rule transformations performed during schema design, fixpoint...
Provided by University of Bonn
-
White Papers
A Fixpoint Approach to State Generation for Stratifiable Disjunctive Deductive Databases
June 26, 2007, 12:00am PDT
In this paper, the authors present a new fixpoint-based approach to bottom-up state generation for stratifiable disjunctive deductive databases. To this end, a new consequence operator based on...
Provided by University of Bonn
-
Whitepapers
Wormhole Detection Using Topology Graph Based Anomaly Detection
March 8, 2011, 12:00am PST
Routing attacks are a serious threat to communication in tactical MANETs. TOGBAD is a centralised approach, using topology graphs to detect such attacks. In this paper, the authors present...
Provided by University of Bonn
-
Whitepapers
Wormhole Detection Using Topology Graph Based Anomaly Detection
March 8, 2011, 12:00am PST
Routing attacks are a serious threat to communication in tactical MANETs. TOGBAD is a centralised approach, using topology graphs to detect such attacks. In this paper, the authors present...
Provided by University of Bonn
-
White Papers
A Fixpoint Approach to State Generation for Stratifiable Disjunctive Deductive Databases
June 26, 2007, 12:00am PDT
In this paper, the authors present a new fixpoint-based approach to bottom-up state generation for stratifiable disjunctive deductive databases. To this end, a new consequence operator based on...
Provided by University of Bonn
-
White Papers
A Transformation-Based Approach to View Updating in Stratifiable Deductive Databases
November 20, 2007, 12:00am PST
In this paper, the authors present a new rule-based approach for consistency preserving view updating in deductive databases. Based on rule transformations performed during schema design, fixpoint...
Provided by University of Bonn
-
White Papers
Data Stream Analysis for Location-Aware Collaborative Information Retrieval
May 14, 2008, 12:00am PDT
The authors propose a new approach for enhancing collaborative in-formation retrieval by means of incorporating positional data for a location-aware personalized retrieval process. In their...
Provided by University of Bonn
-
White Papers
SQL Triggers Reacting on Time Events: An Extension Proposal
June 22, 2009, 12:00am PDT
Being able to activate triggers at timepoints reached or after time intervals elapsed has been acknowledged by many authors as a valuable functionality of a DBMS. Recently, the interest in...
Provided by University of Bonn
-
White Papers
Detecting Moving Objects in Noisy Radar Data Using a Relational Database
June 22, 2009, 12:00am PDT
In moving object databases, many authors assume that number and position of objects to be processed are always known in advance. Detecting an unknown moving object and pursuing its movement,...
Provided by University of Bonn
-
White Papers
A Classification Scheme for Update Propagation Methods in Deductive Databases
July 1, 2009, 12:00am PDT
Incremental view re-computation is a well-established research topic in deductive databases and plenty of update propagation methods have been proposed within the last two decades. All these...
Provided by University of Bonn
-
White Papers
Compressive Estimation of Doubly Selective Channels: Exploiting Channel Sparsity to Improve Spectral Efficiency in Multicarrier Transmissions
February 28, 2009, 12:00am PST
The authors consider the estimation of doubly selective wireless channels within pulse-shaping multicarrier systems (which include OFDM systems as a special case). A pilot-assisted channel...
Provided by University of Bonn
-
White Papers
Optimal Casualty Insurance, Repair, And Regulation In The Presence Of A Securities Market
June 15, 2009, 12:00am PDT
Insurance regulation is often based on keeping probabilities of failure small and not on any explicit analysis of economic trade-offs. The authors build a simple economic model of optimal casualty...
Provided by University of Bonn
-
White Papers
Demo Abstract: Towards Interoperability Testing for Wireless Sensor Networks With COOJA/MSPSim
January 17, 2009, 12:00am PST
Wireless sensor networks are moving towards emerging standards such as IP, ZigBee and WirelessHART which makes interoperability testing important. Interoperability testing is today performed...
Provided by University of Bonn
-
White Papers
Time-Bounded and Space-Bounded Sensing in Wireless Sensor Networks
April 3, 2008, 12:00am PDT
Most papers on sensing in wireless sensor networks use only very simple sensors, e.g. humidity or temperature, to illustrate their concepts. However, in a large number of scenarios including...
Provided by University of Bonn
-
White Papers
On Boundary Recognition Without Location Information In Wireless Sensor Networks
February 12, 2008, 12:00am PST
Boundary recognition is an important and challenging issue in wireless sensor networks when no coordinates or distances are available. The distinction between inner and boundary nodes of the...
Provided by University of Bonn
-
White Papers
Enlighten Me! Secure Key Assignment in Wireless Sensor Networks
March 31, 2009, 12:00am PDT
The availability of secret keys is a precondition for the use of many security solutions and protocols. However, securely assigning such keys to nodes is a challenging task in the context of...
Provided by University of Bonn
-
White Papers
Convex Groups for Self-Organizing Multi-Sink Wireless Sensor Networks
August 24, 2009, 12:00am PDT
Mobile ad-hoc networks have long been proposed for rescue scenarios to support and coordinate the efforts of helpers. Low power wireless sensor networks are a natural extension of this approach....
Provided by University of Bonn
-
White Papers
Family Ownership, Financing Constraints And Investment Decisions
November 1, 2007, 12:00am PDT
This paper provides an empirical answer to the question of how the unique incentives of founding families influence investment decisions. Contrary to theoretical considerations, the results...
Provided by University of Bonn
-
White Papers
Is Wine A Financial Parachute?
December 3, 2010, 12:00am PST
This paper analyzes the relationship between Global Wine Industry Share Price Indexes and composite stock market indexes using a Threshold Vector Error Correction Model (TVECM), aiming to...
Provided by University of Bonn
-
White Papers
Social Capital, Ethnicity And Decision-Making In The Philippine Vegetable Market
September 1, 2007, 12:00am PDT
The paper tackles the issue of social capital as observed in several ethnically bonded groups of agricultural rural communities in the mountainous regions of northern Philippines. In the first...
Provided by University of Bonn
-
White Papers
Implementation of Non-Java Based Interfaces to Embed Existing Models in Spatial Decision Support Systems - Case Study: Integration of Ms Excel-Models in Iwegs
June 7, 2008, 12:00am PDT
This paper shows the programming and usage of computer based interfaces to embed models in modern SDSSs. The special focus is on the development and implementation of non-Java based interfaces...
Provided by University of Bonn
-
White Papers
Improved Approximation Algorithms for the Quality of Service Multicast Tree Problem
January 1, 2010, 12:00am PST
This paper has considered a generalization of the Steiner problem in which each node possesses a rate and the cost of an edge. This paper have given improved approximation algorithms finding trees...
Provided by University of Bonn
-
White Papers
Integration and Visualization of Dynamic Sensor Data Into 3D Spatial Data Infrastructures in a Standardized Way
February 25, 2009, 12:00am PST
Integrating actual sensor data, such as weather or environmental information can improve the value of Geographical Information Systems (GIS) enormously. These applications are nowadays supported...
Provided by University of Bonn
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