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Imperial College London
(105 results)-
White Papers
PHP Aspis: Using Partial Taint Tracking to Protect Against Injection Attacks
April 28, 2011, 12:00am PDT
Web applications are increasingly popular victims of security attacks. Injection attacks, such as Cross Site Scripting or SQL Injection, are a persistent problem. Even though developers are aware...
Provided by Imperial College London
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White Papers
Multiplicity Computing: A Vision of Software Engineering for Next-Generation Computing Platform Applications
November 8, 2010, 12:00am PST
New technologies have recently emerged to challenge the very nature of computing: multicore processors, virtualized operating systems and networks, and data-center clouds. One can view these...
Provided by Imperial College London
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White Papers
Enforcing User Privacy in Web Applications Using Erlang
April 30, 2010, 12:00am PDT
Social networking applications on the web handle the personal data of a large number of concurrently active users. These applications must comply with complex privacy requirements, while achieving...
Provided by Imperial College London
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White Papers
Towards Automated Verification of Autonomous Networks: A Case Study in Self-Configuration
January 28, 2010, 12:00am PST
In autonomic networks, the self-configuration of network entities is one of the most desirable properties. In this paper, the authors show how formal verification techniques can verify the...
Provided by Imperial College London
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White Papers
A Decentralised, Measurement-Based Admission Control Mechanism for Self-Aware Networks
May 10, 2010, 12:00am PDT
This paper presents a decentralised Admission Control (AC) algorithm. The authors' algorithm is a multiple criteria AC algorithm, where each user can specify the QoS metrics that interest him/her,...
Provided by Imperial College London
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White Papers
Queueing Performance Under Network Coding
June 12, 2009, 12:00am PDT
Network Coding (NC) was initially introduced, where its utility for multicast networks was shown. NC allows the algebraic combination of packets at nodes of a multi-hop network, for example by a...
Provided by Imperial College London
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White Papers
Towards a Program Logic for JavaScript
January 19, 2012, 12:00am PST
JavaScript has become the most widely used language for client-side web programming. The dynamic nature of JavaScript makes understanding its code notoriously difficult, leading to buggy programs...
Provided by Imperial College London
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White Papers
Abstraction and Refinement for Local Reasoning
June 18, 2010, 12:00am PDT
Local reasoning has become a well-established technique in program verification, which has been shown to be useful at many different levels of abstraction. In separation logic, the authors use a...
Provided by Imperial College London
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White Papers
Enhanced TCP SYN Attack Detection
November 1, 2007, 12:00am PDT
In this paper, the authors analyze the stateless SYN-SYN&ACK and SYN-FIN/RST detection mechanisms for TCP SYN attacks. They indicate the inherent vulnerability of the SYN-FIN/RST detection...
Provided by Imperial College London
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White Papers
Advice for Coordination
March 14, 2008, 12:00am PDT
The authors show how to extend a coordination language with support for aspect oriented programming. The main challenge is how to properly deal with the trapping of actions before the actual data...
Provided by Imperial College London
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White Papers
Cognitive and Self-Healing Routing for Sensor Networks
September 1, 2007, 12:00am PDT
New approaches to Quality-of-Service (QoS) Routing in wireless sensor networks which use different forms of learning are the subject of this paper. The Cognitive Packet Network (CPN) algorithm...
Provided by Imperial College London
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White Papers
Adaptive Random Re-Routing for Differentiated QoS in Sensor Networks
July 23, 2008, 12:00am PDT
Much of the traffic carried by Sensor Networks will originate from routine measurements or observations by sensors which monitor a particular situation, such as the temperature and humidity in a...
Provided by Imperial College London
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White Papers
Activity Related Biometrics Based on Motion Trajectories
July 22, 2010, 12:00am PDT
This paper contributes to the concept of activity-related biometric authentication in ambient Intelligence environments. The motivation behind the proposed approach derives from activity-related...
Provided by Imperial College London
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White Papers
An Overview of Low-Power Techniques for Field-Programmable Gate Arrays
September 14, 2009, 12:00am PDT
This paper provides an overview of low-power techniques for Field-Programmable Gate Arrays (FPGAs). It covers system-level design techniques and device-level design techniques that have targeted...
Provided by Imperial College London
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White Papers
Context-Aware Publish-Subscribe: Model, Implementation, and Evaluation
April 7, 2009, 12:00am PDT
Complex communication patterns often need to take into account the situation in which the information to be communicated is produced or consumed. Publish-subscribe, and particularly its...
Provided by Imperial College London
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Whitepapers
Improving Federation Executions With Migrating HLA/RTI Central Runtime Components
April 7, 2009, 12:00am PDT
Simulation tools are popular in the design and study of communication systems and networks. The implementation of analytic distributed simulations commonly requires a central entity to support...
Provided by Imperial College London
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Whitepapers
Migrating Auctioneers on Internet Auctions for Improved Utility and Performance
December 3, 2011, 12:00am PST
The paper studies a technique to improve the utility and performance of an automated auction application where the auctioneer and bidders communicate through the Internet. The lack of...
Provided by Imperial College London
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Whitepapers
NaaS: Network-as-a-Service in the Cloud
March 27, 2012, 12:00am PDT
Cloud computing realises the vision of utility computing. Tenants can benefit from on-demand provisioning of computational resources according to a pay-per-use model and can outsource hardware...
Provided by Imperial College London
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Whitepapers
Resilient Emergency Evacuation Using Opportunistic Communications
June 14, 2012, 12:00am PDT
The authors describe an emergency Evacuation Support System (ESS) that employs short-range wireless communications among mobile devices carried by civilians. Emergency information is disseminated...
Provided by Imperial College London
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Whitepapers
Pervasive Emergency Support Systems for Building Evacuation
March 20, 2012, 12:00am PDT
An emergency situation taking place inside a confined space, such as a building, is a challenging task due to the presence of dynamic conditions. Pervasive systems can prove beneficial for the...
Provided by Imperial College London
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Whitepapers
Intelligent Navigation Systems for Building Evacuation
May 24, 2011, 12:00am PDT
Intelligent navigation systems can significantly improve the evacuation of civilians in urban emergencies by providing dynamic directions to the evacuees as the hazard spreads. In this paper, the...
Provided by Imperial College London
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Whitepapers
Random Neural Network for Emergency Management
August 26, 2010, 12:00am PDT
The authors consider decision problems in emergency management, such as simultaneously dispatching emergency teams to locations where incidents have occurred, and propose an algorithmic solution...
Provided by Imperial College London
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Whitepapers
A Decision Support System for Disaster Management in Buildings
November 13, 2009, 12:00am PST
Information systems that provide decision support in an efficient and timely manner can prove beneficial for emergency response operations. In this paper, the authors propose the use of a system...
Provided by Imperial College London
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White Papers
Multi-User Frequency Domain Scheduling for WiMAX OFDMA
August 29, 2007, 12:00am PDT
This paper introduces the performance analysis of 802.16e OFDMA system in UL mode with respect to multi-user scheduling algorithms in frequency domain. Different scheduling algorithms - from the...
Provided by Imperial College London
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Whitepapers
Low-Complexity Scheduling Policies for Energy Harvesting Communication Networks
April 29, 2013, 12:00am PDT
A time-slotted multiple access wireless system with N transmitting nodes, each equipped with an Energy Harvesting (EH) device and a rechargeable battery of finite capacity, is studied. The energy...
Provided by Imperial College London
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White Papers
Packets Traveling in Non-Homogeneous Networks
May 10, 2011, 12:00am PDT
This paper considers a probability model for travel of a packet from a source node to a destination node in a large non-homogeneous multiple hop network with unreliable routing tables. Use of a...
Provided by Imperial College London
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White Papers
A Novel Weight Initialization Method for the Random Neural Network
April 28, 2008, 12:00am PDT
In this paper, the authors propose a novel weight initialization method for the Random Neural Network. The method relies on approximating the signal-flow equations of the network to obtain a...
Provided by Imperial College London
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White Papers
Reducing Power Consumption in Wired Networks
July 16, 2009, 12:00am PDT
Over 500 million host computers, three billion PCs and mobile devices consume over a billion kilowatts of electricity. As part of this "System" computer networks consume an increasing amount of...
Provided by Imperial College London
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White Papers
SQPR: Stream Query Planning With Reuse
November 17, 2010, 12:00am PST
When users submit new queries to a Distributed Stream Processing System (DSPS), a query planner must allocate physical resources, such as CPU cores, memory and network bandwidth, from a set of...
Provided by Imperial College London
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White Papers
Safe Parallel Programming With Session Java
October 25, 2010, 12:00am PDT
The session-typed programming language Session Java (SJ) has proved to be an effective tool for distributed programming, promoting productivity and compile-time safety. This paper investigates the...
Provided by Imperial College London
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White Papers
Object Capabilities and Isolation of Untrusted Web Applications
March 8, 2010, 12:00am PST
A growing number of current web sites combine active content (applications) from untrusted sources, as in so-called mashups. The object-capability model provides an appealing approach for...
Provided by Imperial College London
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White Papers
DEFCON: High-Performance Event Processing With Information Security
May 4, 2010, 12:00am PDT
In finance and healthcare, event processing systems handle sensitive data on behalf of many clients. Guaranteeing information security in such systems is challenging because of their strict...
Provided by Imperial College London
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White Papers
Distributed Fault Tolerant Controllers
November 26, 2009, 12:00am PST
Distributed applications are often built from sets of distributed components that must be co-ordinated in order to achieve some global behaviour. The common approach is to use a centralised...
Provided by Imperial College London
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White Papers
A Symmetry Reduction Technique for Model Checking Temporal-Epistemic Logic
January 14, 2009, 12:00am PST
The authors introduce a symmetry reduction technique for model checking temporal epistemic properties of multi-agent systems defined in the mainstream interpreted systems framework. The technique,...
Provided by Imperial College London
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White Papers
UKAIRO: Internet-Scale Bandwidth Detouring
January 15, 2011, 12:00am PST
The performance of content distribution on the Internet is crucial for many services. While popular content can be delivered efficiently to users by caching it using content delivery networks, the...
Provided by Imperial College London
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White Papers
Asset Pricing With Random Information Flow
September 21, 2010, 12:00am PDT
In the information-based approach to asset pricing the market filtration is modeled explicitly as a superposition of signals concerning relevant market factors and independent noise. The rate at...
Provided by Imperial College London
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White Papers
Constrained Nonsmooth Utility Maximization On The Positive Real Line
October 19, 2010, 12:00am PDT
The authors maximize the expected utility of terminal wealth in an incomplete market where there are cone constraints on the investor's portfolio process and the utility function is not assumed to...
Provided by Imperial College London
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White Papers
Conditional Density Models For Asset Pricing
October 21, 2010, 12:00am PDT
The authors model the dynamics of asset prices and associated derivatives by consideration of the dynamics of the conditional probability density process for the value of an asset at some...
Provided by Imperial College London
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White Papers
Constrained Mixture Models For Asset Returns Modelling
March 15, 2011, 12:00am PDT
The estimation of asset return distributions is crucial for determining optimal trading strategies. In this paper, the authors describe the constrained mixture model, based on a mixture of Gamma...
Provided by Imperial College London
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White Papers
Noise, Risk Premium, And Bubble
March 17, 2011, 12:00am PDT
The existence of the pricing kernel is shown to imply the existence of an ambient information process that generates market filtration. This information process consists of a signal component...
Provided by Imperial College London
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White Papers
The Emergence Of Leadership In Social Networks
June 3, 2011, 12:00am PDT
The authors study a networked version of the minority game in which agents can choose to follow the choices made by a neighbouring agent in a social network. They show that for a wide variety of...
Provided by Imperial College London
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White Papers
Creating a Digital Ecosystem: Service-Oriented Architectures With Distributed Evolutionary Computing
October 5, 2009, 12:00am PDT
The authors start with a discussion of the relevant literature, including Nature Inspired Comuting as a framework in which to understand this work, and the process of biomimicry to be used in...
Provided by Imperial College London
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White Papers
A Response Time Distribution Model for Zoned RAID
June 11, 2008, 12:00am PDT
RAID systems are widely deployed, both as standalone storage solutions and as the building blocks of modern virtualised storage platforms. An accurate model of RAID system performance is therefore...
Provided by Imperial College London
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White Papers
Route Capacity Estimation Based Admission Control and QoS Routing for Mesh Networks
September 29, 2009, 12:00am PDT
Wireless Mesh Networks (WMNs) is a promising key technology for next generation wireless backhauling that is expected to support various types of applications with different Quality-of-Service...
Provided by Imperial College London
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White Papers
Towards Unifying Fault And Change Management
November 8, 2007, 12:00am PST
A basic model for dynamic change management has been proposed which permits changes to be specified declaratively at the configuration level, in terms of structure only. Component nodes can be...
Provided by Imperial College London
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White Papers
Data Acquisition and Error Analysis for Pepperpot Emittance Measurements
June 8, 2009, 12:00am PDT
The pepperpot provides a unique and fast method of measuring emittance, providing four dimensional correlated beam measurements for both transverse planes. In order to make such a correlated...
Provided by Imperial College London
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White Papers
Future of Road Network Management and the Role of Intelligent Transport Systems
October 1, 2008, 12:00am PDT
This paper argues the case for a better integrated approach to transport management, particularly real time road network management. The case is derived both from the need for such an approach to...
Provided by Imperial College London
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White Papers
Service Level Agreement Specification, Compliance Prediction and Monitoring With Performance Trees
January 1, 2009, 12:00am PST
Service Level Agreements (SLAs) are widely used throughout industry but suffer from specification ambiguities and difficulties in predicting and monitoring compliance. To address these issues, the...
Provided by Imperial College London
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White Papers
An Autonomic Approach to Denial of Service Defence
January 1, 2009, 12:00am PST
Denial of service attacks, viruses and worms are common tools for malicious adversarial behaviour in networks. This paper proposes the use of their autonomic routing protocol, the Cognitive Packet...
Provided by Imperial College London
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White Papers
Multi-User Frequency Domain Scheduling for WiMAX OFDMA
August 29, 2007, 12:00am PDT
This paper introduces the performance analysis of 802.16e OFDMA system in UL mode with respect to multi-user scheduling algorithms in frequency domain. Different scheduling algorithms - from the...
Provided by Imperial College London
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