toronto
RSS torontoFitting Selected Random Planetary Systems to Titius-Bode Laws
White Paper Simple ‘‘solar systems’’ are generated with planetary orbital radii r distributed uniformly random in log r between 0.2 and 50 AU, with masses and order identical to our own Solar System. A conservative stability criterion is imposed by requiring... [24 Feb 2004]
A Brief Survey of Issues Relating to the Reliability of Simulation of the Large Gravitational N-body Problem
White Paper The present paper is a brief tour of some of the literature concerning the topic of the title. The survey is by no means complete. We will look at some simulations done by astronomers, and the kinds of measurements taken. [24 Feb 2004]
Efficient Shadowing of High Dimensional Chaotic Systems with the Large Astrophysical N-body Problem as an Example
White Paper N-body systems are chaotic. This means that numerical errors in their solution are magnified exponentially with time, perhaps making the solutions useless. Shadowing tries to show that numerical solutions of chaotic systems still have some validity. [24 Feb 2004]
Introduction to HTML and URLs
White Paper This collection of pages explains how to use the different HTML document description elements, or tags and how to use these elements to write good, well designed HTML documents. This particular page describes the overall content and organization of... [24 Feb 2004]
A New Binary Logarithmic Arbitration Method for Ethernet
White Paper Ethernet uses a random-access MAC layer protocol, belonging to the Aloha, CSMA, and CSMA/CD protocol families. A necessary requirement for using one of these protocols is solving the stability question collisions waste channel bandwidth, and... [24 Feb 2004]
Service Level Management: Optimizing Your OSS for SLA Delivery
White Paper As the Telecommunication world move from the circuit switching to packet switching and from the dedicated circuit to IP VPN, QoS, Service Level Management is becoming more and more vital when the service provider deals with customers. [10 Aug 2006]
Sub-Carrier Based Weight Technique for OFDM Systems
White Paper This paper presents a new method to extend adaptive antenna array techniques to mitigate strong co-channel interference in an orthogonal frequency division multiplexing system. The proposed algorithm uses optimal weights determined from classical... [03 Jul 2008]
Stochastic Analysis of Network Coding in Epidemic Routing
White Paper Epidemic routing has been proposed to reduce the data transmission delay in disruption tolerant wireless networks, in which data can be replicated along multiple opportunistic paths as different nodes move within each other's communication range. [11 Jul 2008]
Feedback-Based Scheduling for Back-End Databases in Shared Dynamic Content Server Clusters
White Paper This paper introduces a self-configuring architecture for scaling the database tier of dynamic content web servers. The authors use a unified approach to load and fault management based on dynamic data replication and feedback-based scheduling. [04 Aug 2006]
A Min-Plus System Interpretation of Bandwidth Estimation
White Paper Significant research has been dedicated to methods that estimate the available bandwidth in a network from traffic measurements. While estimation methods abound, less progress has been made on achieving a foundational understanding of the bandwidth... [11 Jul 2008]
An Introduction to Multicarrier Modulation
White Paper Multicarrier modulation helps to reduce the detrimental effects of multipath fading. Because of its robustness to multipath, and the ease of implementing it in transmitters and receivers using the Fast Fourier Transform (FFT), the MCM concept is... [19 May 2006]
Requirements-Driven Configuration of Software Systems
White Paper Configuring large-scale software to meet different user requirements is a challenging process, since end-users do not know the technical details of the system in the first place. The authors presents an automatic process to connect high-level user... [23 Feb 2006]
Block-Level Virtualization: How Far Can We Go?
White Paper This paper presents the vision on building large-scale storage systems from commodity components in a data center. For reasons of efficiency and flexibility, the paper advocates maintaining sophisticated data management functions behind a block... [29 Feb 2008]
Agent-Oriented Methodologies - Towards a Challenge Exemplar
White Paper The agent-oriented approach to software development is transitioning from the prototyping done by researchers to the development of large-scale industrial-strength applications by software professionals. [21 Apr 2006]
An Investigation of the Characteristics of Spyware Programs
White Paper During the last few years, several kinds of malicious software have become increasingly spread throughout the online community. Numerous variants of such software exist in the wild: malware, ad-ware, spyware, viruses, backdoors, trojans, worms are... [19 Apr 2006]
