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Hebrew University of Jerusalem
(27 results)-
White Papers
The Influence of Doppler Effects in HAP-OFDMA Systems
July 1, 2011, 12:00am PDT
The authors consider the impact of Doppler frequency shift on the Orthogonal Frequency Division Multiple Access (OFDMA) signal and Frequency Bank Signal (FBS) transmitted over High Altitude...
Provided by Hebrew University of Jerusalem
-
White Papers
Evaluating Total Order Algorithms in WAN
January 1, 2010, 12:00am PST
Agreed message delivery is an important service in distributed systems, especially when dealing with fault-tolerant applications. This work studies factors influencing protocols that provide...
Provided by Hebrew University of Jerusalem
-
White Papers
Loan Pricing Under Basel II In An Imperfectly Competitive Banking Market
January 15, 2008, 12:00am PST
The new Basel Capital Accord (Basel II), published in its final form in June 2006, established new and revised capital requirements for banks. In this paper the authors analyze and estimate the...
Provided by Hebrew University of Jerusalem
-
White Papers
Leadership Games With Convex Strategy Sets
November 27, 2009, 12:00am PST
A basic model of commitment is to convert a two-player game in strategic form to a "Leadership game" with the same payoffs, where one player, the leader, commits to a strategy, to which the second...
Provided by Hebrew University of Jerusalem
-
White Papers
The Role Of Incentives In The World Financial Crisis
February 1, 2010, 12:00am PST
A lecture explaining the causes of the 2008-9 world financial crisis in terms of ordinary economic processes. The lecture was delivered at the 39th St. Gallen Symposium, University of St. Gallen,...
Provided by Hebrew University of Jerusalem
-
White Papers
IQ: The Case for Iterative Querying for Knowledge
January 12, 2011, 12:00am PST
Large knowledge bases, the Linked Data cloud, and Web 2.0 communities open up new opportunities for deep question answering to support the advanced information needs of knowledge workers like...
Provided by Hebrew University of Jerusalem
-
White Papers
Cognitive Authentication Schemes for Unassisted Humans, Safe Against Spyware
January 1, 2011, 12:00am PST
Can the authors secure user authentication against eavesdropping adversaries, relying on human cognitive functions alone, unassisted by any external computational device? To accomplish this goal,...
Provided by Hebrew University of Jerusalem
-
White Papers
Two-Dimensional Selections for Feature-Based Data Exchange
January 1, 2011, 12:00am PST
Proper treatment of selections is essential in parametric feature-based design. Data exchange is one of the most important operators in any design paradigm. In this paper, the authors address...
Provided by Hebrew University of Jerusalem
-
White Papers
On Synchronization of Wideband Impulsive Systems in Multipath
January 1, 2011, 12:00am PST
A preponderance of ultra-wideband radio communication systems under current study employ the use of Pulse Position Modulation (PPM). However, there are significant issues related to the...
Provided by Hebrew University of Jerusalem
-
White Papers
Synchronization of PPM Over Wideband Multipath Channels
January 1, 2011, 12:00am PST
The acquisition, or synchronization, of the multi-path profile for ultra-wideband Pulse Position Modulation (PPM) communication systems is considered. The rate of increase of the number of paths...
Provided by Hebrew University of Jerusalem
-
White Papers
Motion Segmentation Using an Occlusion Detector
January 1, 2011, 12:00am PST
The authors present a novel method for the detection of motion boundaries in a video sequence based on differential properties of the spatio-temporal domain. Regarding the video sequence as a 3D...
Provided by Hebrew University of Jerusalem
-
White Papers
Altruism, Partner Choice, And Fixed-cost Signalling
July 24, 2008, 12:00am PDT
The authors consider a multitype population model with unobservable types, in which players are engaged in the 'Mutual help' game: each player can increase her partner's fitness at a cost to...
Provided by Hebrew University of Jerusalem
-
White Papers
Timing Acquisition of Wideband PPM Systems Over Multipath
January 1, 2011, 12:00am PST
The acquisition, or synchronization, of a multipath channel profile for ultra-wideband Pulse Position Modulation (PPM) communication systems is considered. The rate of increase of the number of...
Provided by Hebrew University of Jerusalem
-
White Papers
Distributed Web Based Computation (DWBC)
May 18, 2007, 12:00am PDT
The present paper introduces the design of Distributed Web Based Computation (DWBC), which is the next generation of the GBPM (Grid Based Parallel MATLAB) project. The GBPM provides infrastructure...
Provided by Hebrew University of Jerusalem
-
White Papers
Efficient Clustering for Improving Network Performance in Wireless Sensor Networks
November 12, 2007, 12:00am PST
Clustering is an important mechanism in large multi-hop wireless sensor networks for obtaining scalability, reducing energy consumption and achieving better network performance. Most of the...
Provided by Hebrew University of Jerusalem
-
White Papers
A Global Scheduling Framework for Virtualization Environments
February 11, 2009, 12:00am PST
A premier goal of resource allocators in virtualization environments is to control the relative resource consumption of the different virtual machines, and moreover, to be able to change the...
Provided by Hebrew University of Jerusalem
-
White Papers
Entrepreneurial Finance Meets Organizational Reality: Comparing Investment Practices And Performance Of Corporate And Independent Venture Capitalists
August 1, 2011, 12:00am PDT
This paper investigates the effect of compensation of corporate personnel on their investment in new technologies. The authors focus on a specific corporate activity, namely Corporate Venture...
Provided by Hebrew University of Jerusalem
-
White Papers
MULAN: Multi-Level Adaptive Network Filter
August 1, 2009, 12:00am PDT
A security engine should detect network traffic attacks at line-speed. When an attack is detected, a good security engine should screen away the offending packets and continue to forward all other...
Provided by Hebrew University of Jerusalem
-
White Papers
Belief Propagation in Wireless Sensor Networks - A Practical Approach
June 27, 2008, 12:00am PDT
Distributed inference schemes for detection, estimation and learning comprise an attractive approach to Wireless Sensor Networks (WSNs), because of properties such as asynchronous operation and...
Provided by Hebrew University of Jerusalem
-
White Papers
Peer-to-Peer Secure Multi-Party Numerical Computation
June 19, 2008, 12:00am PDT
The authors propose an efficient framework for enabling secure multi-party numerical computations in a peer-to-peer network. This problem arises in a range of applications such as collaborative...
Provided by Hebrew University of Jerusalem
-
White Papers
Collabory: A Collaborative Throughput Stabilizer & Accelerator for P2P Protocols
June 21, 2008, 12:00am PDT
Common Peer-To-Peer (P2P) file sharing clients usually download at an unstable rate and hardly exploit the available bandwidth offered by low rate sources. The characteristic fluctuational...
Provided by Hebrew University of Jerusalem
-
White Papers
Tremor Acquisition System Based on UWB Wireless Sensor Network
May 18, 2010, 12:00am PDT
This paper suggests quantifying and analyzing tremor using an Ultra Wide-Band (UWB) Wireless Sensor Network (WSN). WSN based on UWB technology provides a new technology for non contact tremor...
Provided by Hebrew University of Jerusalem
-
White Papers
Continuous Close-Proximity RSSI-Based Tracking in Wireless Sensor Networks
April 26, 2010, 12:00am PDT
In this paper, the authors develop a continuous high-precision tracking system based on Received Signal Strength Indicator (RSSI) measurements for small ranges. The proposed system uses minimal...
Provided by Hebrew University of Jerusalem
-
White Papers
A Little More, a Lot Better: Improving Path Quality by a Path Merging Algorithm
April 1, 2008, 12:00am PDT
Sampling-based motion planners are an effective means for generating collision-free motion paths. However, the quality of these motion paths (with respect to quality measures such as path length,...
Provided by Hebrew University of Jerusalem
-
White Papers
Spatial Dynamics of Indoor Radio Wideband Channels
October 26, 2010, 12:00am PDT
The multi-path components of super-wideband (2-17.2GHz) non-line-of-sight channel responses measured inside several buildings are stable along sections that are 27 cm long on average with a...
Provided by Hebrew University of Jerusalem
-
Whitepapers
Access-Efficient Balanced Bloom Filters
January 11, 2012, 12:00am PST
The implementation of Bloom Filters in network devices ideally has low memory access-rate and low false positive rate. However, since Bloom Filters hash elements to arbitrary memory blocks, they...
Provided by Hebrew University of Jerusalem
-
Whitepapers
Space-Time Tradeoffs in Software-Based Deep Packet Inspection
February 8, 2011, 12:00am PST
Deep Packet Inspection (DPI) lies at the core of contemporary Network Intrusion Detection/Prevention Systems and Web Application Firewalls. DPI aims to identify various malware (including spam and...
Provided by Hebrew University of Jerusalem
-
Whitepapers
Space-Time Tradeoffs in Software-Based Deep Packet Inspection
February 8, 2011, 12:00am PST
Deep Packet Inspection (DPI) lies at the core of contemporary Network Intrusion Detection/Prevention Systems and Web Application Firewalls. DPI aims to identify various malware (including spam and...
Provided by Hebrew University of Jerusalem
-
Whitepapers
Access-Efficient Balanced Bloom Filters
January 11, 2012, 12:00am PST
The implementation of Bloom Filters in network devices ideally has low memory access-rate and low false positive rate. However, since Bloom Filters hash elements to arbitrary memory blocks, they...
Provided by Hebrew University of Jerusalem
-
White Papers
Spatial Dynamics of Indoor Radio Wideband Channels
October 26, 2010, 12:00am PDT
The multi-path components of super-wideband (2-17.2GHz) non-line-of-sight channel responses measured inside several buildings are stable along sections that are 27 cm long on average with a...
Provided by Hebrew University of Jerusalem
-
White Papers
A Little More, a Lot Better: Improving Path Quality by a Path Merging Algorithm
April 1, 2008, 12:00am PDT
Sampling-based motion planners are an effective means for generating collision-free motion paths. However, the quality of these motion paths (with respect to quality measures such as path length,...
Provided by Hebrew University of Jerusalem
-
White Papers
Continuous Close-Proximity RSSI-Based Tracking in Wireless Sensor Networks
April 26, 2010, 12:00am PDT
In this paper, the authors develop a continuous high-precision tracking system based on Received Signal Strength Indicator (RSSI) measurements for small ranges. The proposed system uses minimal...
Provided by Hebrew University of Jerusalem
-
White Papers
Tremor Acquisition System Based on UWB Wireless Sensor Network
May 18, 2010, 12:00am PDT
This paper suggests quantifying and analyzing tremor using an Ultra Wide-Band (UWB) Wireless Sensor Network (WSN). WSN based on UWB technology provides a new technology for non contact tremor...
Provided by Hebrew University of Jerusalem
-
White Papers
The Influence of Doppler Effects in HAP-OFDMA Systems
July 1, 2011, 12:00am PDT
The authors consider the impact of Doppler frequency shift on the Orthogonal Frequency Division Multiple Access (OFDMA) signal and Frequency Bank Signal (FBS) transmitted over High Altitude...
Provided by Hebrew University of Jerusalem
-
White Papers
Collabory: A Collaborative Throughput Stabilizer & Accelerator for P2P Protocols
June 21, 2008, 12:00am PDT
Common Peer-To-Peer (P2P) file sharing clients usually download at an unstable rate and hardly exploit the available bandwidth offered by low rate sources. The characteristic fluctuational...
Provided by Hebrew University of Jerusalem
-
White Papers
Peer-to-Peer Secure Multi-Party Numerical Computation
June 19, 2008, 12:00am PDT
The authors propose an efficient framework for enabling secure multi-party numerical computations in a peer-to-peer network. This problem arises in a range of applications such as collaborative...
Provided by Hebrew University of Jerusalem
-
White Papers
Belief Propagation in Wireless Sensor Networks - A Practical Approach
June 27, 2008, 12:00am PDT
Distributed inference schemes for detection, estimation and learning comprise an attractive approach to Wireless Sensor Networks (WSNs), because of properties such as asynchronous operation and...
Provided by Hebrew University of Jerusalem
-
White Papers
MULAN: Multi-Level Adaptive Network Filter
August 1, 2009, 12:00am PDT
A security engine should detect network traffic attacks at line-speed. When an attack is detected, a good security engine should screen away the offending packets and continue to forward all other...
Provided by Hebrew University of Jerusalem
-
White Papers
Entrepreneurial Finance Meets Organizational Reality: Comparing Investment Practices And Performance Of Corporate And Independent Venture Capitalists
August 1, 2011, 12:00am PDT
This paper investigates the effect of compensation of corporate personnel on their investment in new technologies. The authors focus on a specific corporate activity, namely Corporate Venture...
Provided by Hebrew University of Jerusalem
-
White Papers
A Global Scheduling Framework for Virtualization Environments
February 11, 2009, 12:00am PST
A premier goal of resource allocators in virtualization environments is to control the relative resource consumption of the different virtual machines, and moreover, to be able to change the...
Provided by Hebrew University of Jerusalem
-
White Papers
Efficient Clustering for Improving Network Performance in Wireless Sensor Networks
November 12, 2007, 12:00am PST
Clustering is an important mechanism in large multi-hop wireless sensor networks for obtaining scalability, reducing energy consumption and achieving better network performance. Most of the...
Provided by Hebrew University of Jerusalem
-
White Papers
Distributed Web Based Computation (DWBC)
May 18, 2007, 12:00am PDT
The present paper introduces the design of Distributed Web Based Computation (DWBC), which is the next generation of the GBPM (Grid Based Parallel MATLAB) project. The GBPM provides infrastructure...
Provided by Hebrew University of Jerusalem
-
White Papers
Timing Acquisition of Wideband PPM Systems Over Multipath
January 1, 2011, 12:00am PST
The acquisition, or synchronization, of a multipath channel profile for ultra-wideband Pulse Position Modulation (PPM) communication systems is considered. The rate of increase of the number of...
Provided by Hebrew University of Jerusalem
-
White Papers
Altruism, Partner Choice, And Fixed-cost Signalling
July 24, 2008, 12:00am PDT
The authors consider a multitype population model with unobservable types, in which players are engaged in the 'Mutual help' game: each player can increase her partner's fitness at a cost to...
Provided by Hebrew University of Jerusalem
-
White Papers
Motion Segmentation Using an Occlusion Detector
January 1, 2011, 12:00am PST
The authors present a novel method for the detection of motion boundaries in a video sequence based on differential properties of the spatio-temporal domain. Regarding the video sequence as a 3D...
Provided by Hebrew University of Jerusalem
-
White Papers
Synchronization of PPM Over Wideband Multipath Channels
January 1, 2011, 12:00am PST
The acquisition, or synchronization, of the multi-path profile for ultra-wideband Pulse Position Modulation (PPM) communication systems is considered. The rate of increase of the number of paths...
Provided by Hebrew University of Jerusalem
-
White Papers
On Synchronization of Wideband Impulsive Systems in Multipath
January 1, 2011, 12:00am PST
A preponderance of ultra-wideband radio communication systems under current study employ the use of Pulse Position Modulation (PPM). However, there are significant issues related to the...
Provided by Hebrew University of Jerusalem
-
White Papers
Two-Dimensional Selections for Feature-Based Data Exchange
January 1, 2011, 12:00am PST
Proper treatment of selections is essential in parametric feature-based design. Data exchange is one of the most important operators in any design paradigm. In this paper, the authors address...
Provided by Hebrew University of Jerusalem
-
White Papers
Cognitive Authentication Schemes for Unassisted Humans, Safe Against Spyware
January 1, 2011, 12:00am PST
Can the authors secure user authentication against eavesdropping adversaries, relying on human cognitive functions alone, unassisted by any external computational device? To accomplish this goal,...
Provided by Hebrew University of Jerusalem
-
White Papers
IQ: The Case for Iterative Querying for Knowledge
January 12, 2011, 12:00am PST
Large knowledge bases, the Linked Data cloud, and Web 2.0 communities open up new opportunities for deep question answering to support the advanced information needs of knowledge workers like...
Provided by Hebrew University of Jerusalem
-
White Papers
The Role Of Incentives In The World Financial Crisis
February 1, 2010, 12:00am PST
A lecture explaining the causes of the 2008-9 world financial crisis in terms of ordinary economic processes. The lecture was delivered at the 39th St. Gallen Symposium, University of St. Gallen,...
Provided by Hebrew University of Jerusalem
-
White Papers
Leadership Games With Convex Strategy Sets
November 27, 2009, 12:00am PST
A basic model of commitment is to convert a two-player game in strategic form to a "Leadership game" with the same payoffs, where one player, the leader, commits to a strategy, to which the second...
Provided by Hebrew University of Jerusalem
-
White Papers
Loan Pricing Under Basel II In An Imperfectly Competitive Banking Market
January 15, 2008, 12:00am PST
The new Basel Capital Accord (Basel II), published in its final form in June 2006, established new and revised capital requirements for banks. In this paper the authors analyze and estimate the...
Provided by Hebrew University of Jerusalem
-
White Papers
Evaluating Total Order Algorithms in WAN
January 1, 2010, 12:00am PST
Agreed message delivery is an important service in distributed systems, especially when dealing with fault-tolerant applications. This work studies factors influencing protocols that provide...
Provided by Hebrew University of Jerusalem
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