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April 24, 2017 in Research Papers

Partnerships, Information And Public Safety: Community Policing In A Time Of Terror

Abstract Crime, Policing and Citizenship (CPC) – Space-Time Interactions of Dynamic Networks has been a major UK EPSRC-funded research project. It has been a multidisciplinary collaboration of geoinfor-matics, crime science,... Read More
April 24, 2017 in Research Papers

Learning Shared Representations In Multi-Task Reinforcement Learning

Abstract We investigate a paradigm in multi-task reinforcement learning (MT-RL) in which an agent is placed in an environment and needs to learn to perform a series of tasks, within... Read More
April 24, 2017 in Research Papers

Leveraging Clincal Data To Enhance Localization Of Brain Atrophy

Abstract Sparse Canonical Correlation Analysis (SCCA) has been proposed to find pairs of sparse weight vectors that maximize correlations between sets of paired variables. This is done by computing one... Read More
April 24, 2017 in Research Papers

Computational Analysis Of Stochastic Heterogeneity In PCR Amplification Efficiency Revealed By Single Molecule Barcoding

Abstract The polymerase chain reaction (PCR) is one of the most widely used techniques in molecular biology. In combination with High Throughput Sequencing (HTS), PCR is widely used to quantify... Read More
April 24, 2017 in Research Papers

Multivariate Effect Ranking Via Adaptive Sparse PLS

Abstract Unsupervised learning approaches, such as Sparse Partial Least Squares (SPLS), may provide useful insights into the brain mechanisms by finding relationships between two sets of variables (i.e. Views) from... Read More
April 24, 2017 in Research Papers

Experimental Computational Simulation For Algorithmic Trading

Abstract This thesis investigates experimental Computational Simulation Environments for Computational Finance that for the purpose of this study focused on Algorithmic Trading (AT) models and their risk. Within Computational Finance,... Read More
April 24, 2017 in Research Papers

On Splitting A Point With Summation Polynomials In Binary Elliptic Curves

Abstract Recent research for efficient algorithms for solving the dis- crete logarithm (DL) problem on elliptic curves depends on the difficult question of the feasibility of index calculus which would... Read More
April 24, 2017 in Research Papers

Speed Optimizations In Bitcoin Key Recovery Attacks

Abstract In this paper we study and give the first detailed benchmarks on existing implementations of the secp256k1 elliptic curve used by at least hundreds of thousands of users in... Read More
April 24, 2017 in Research Papers

On Selection Of Samples In Algebraic Attacks And A New Technique To Find Hidden Low Degree Equations

Abstract The best way of selecting samples in algebraic attacks against block ciphers is not well explored and understood. We introduce a simple strategy for selecting the plaintexts and demonstrate... Read More
April 24, 2017 in Research Papers

An Improved Differential Attack On Full GOST

Abstract GOST 28147-89 is a well-known block cipher and the official encryption standard of the Russian Federation. A 256-bit block cipher considered as an alternative for AES-256 and triple DES,... Read More
April 24, 2017 in Research Papers

Optimisations In Algebraic And Differential Cryptoanalysis

Abstract There are two major families in cryptanalytic attacks on symmetric ciphers: statistical attacks and algebraic attacks. In this position paper we argue that algebraic cryptanalysis has not yet been... Read More
April 24, 2017 in Research Papers

High Saturation Complete Graph Approach For EC Point Decomposition And ECDL Problem

Abstract One of the key questions in contemporary applied cryptog- raphy is whether there exist an efficient algorithm for solving the dis- crete logarithm problem in elliptic curves. The primary... Read More
April 24, 2017 in Research Papers

Features or Bugs: The Seven Sins Of Current Bitcoin

Abstract Bitcoin has a number of features and properties which are sometimes presented as interesting and positive. In fact they are closer to engineering mistakes. Serious problems are programmed in... Read More
April 24, 2017 in Research Papers

The Evolution Of Tissue Stiffness At Radiofrequncy Ablation Sites During Lesion Formation And In The Peri-Ablation Period

Abstract Elastography imaging can provide radiofrequency ablation (RFA) lesion assessment due to tissue stiffening at the ablation site. An important aspect of assessment is the spatial and temporal stability of... Read More
April 24, 2017 in Research Papers

A Comparison of Acustic Radiation Force Derived Indices Of Cardiac Function In The Langendorff Perfused Rabbit Heart

Abstract In the past decade, there has been an increased interest in characterizing cardiac tissue mechanics utilizing newly developed ultrasound-based elastography techniques. These methods excite the tissue mechanically and track... Read More
April 24, 2017 in Research Papers

BMI Compared With 3-Dimensional Body Shape: The UK National Sizing Survey

Abstract BACKGROUND:
Human body shape is a rich source of information about health and the risk of disease. Measuring anthropometry manually is time-consuming, however, and only a few indexes of shape... Read More
April 24, 2017 in Research Papers

3D Body Scanning And Healthcare Applications

Abstract Developed largely for the clothing industry, 3D body-surface scanners are transforming our ability to accurately measure and visualize a person’s body size, shape, and skin-surface area. Advancements in 3D... Read More
April 24, 2017 in Research Papers

Age-Variability In Body Shape Associated With Excess Weight: The UK National Sizing Survey

Abstract Background:The health risks of obesity are disproportionately due to central abdominal adiposity; however, the extent to which age is associated with the body shape of obese adults is not... Read More
April 24, 2017 in Research Papers

Computational Finance

Abstract Banks and investment funds are increasingly basing their competitiveness on the quality of their quantitative technology, including programming techniques, analytical methods, and applications such as financial forecasting, option pricing,... Read More
April 24, 2017 in Research Papers

Reproduction, Aging, And Body Shape By Three-Dimensional Photonic Scanning In Thai Men And Women

Abstract Objectives: Aging and reproduction have been independently associated with body shape in women, with redistribution of body fat from lower to upper body regions. This may be interpreted as... Read More
April 23, 2017 in Research Papers

Body Shape By 3-D Photonic Scanning In Thai And UK Adults: Comparison Of National Sizing Surveys

Abstract Background: Body mass index (BMI) cut-offs associated with increased risk of diabetes and cardiovascular disease differ between European and Asian populations, and among Asian populations. Within-population and ethnic variability... Read More
April 20, 2017 in Research Papers

Botcoin: Monetizing Stolen Cycles

Abstract At the current stratospheric value of Bitcoin, miners with access to significant computational horsepower are literally printing money. For example, the first operator of a USD $1,500 custom ASIC... Read More
April 20, 2017 in Research Papers

Algebraic MACs and Keyed-Verification Anonymous Credentials

Abstract We consider the problem of constructing anonymous credentials for use in a setting where the issuer of credentials is also the verifier, or more generally where the issuer and... Read More
April 20, 2017 in Research Papers

Privacy-Enhancing Overlays In Bitcoin

FinTech Abstract In this paper, we explore the role of privacy-enhancing over- lays in Bitcoin. To examine the effectiveness of different solutions, we first propose a formal definitional framework for... Read More
April 20, 2017 in Research Papers

A Profitable Sub-Prime Loan: Obtaining The Advantages Of Composite-Order In Prime-Order Bilinear Groups

Abstract Composite-order bilinear groups provide many structural features that are useful for both con- structing cryptographic primitives and enabling security reductions. Despite these convenient fea- tures, however, composite-order bilinear groups... Read More
April 20, 2017 in Research Papers

Centrally Banked Cryptocurrencies

Abstract Current cryptocurrencies, starting with Bitcoin, build a decentralized blockchain-based transaction ledger, main- tained through proofs-of-work that also serve to generate a monetary supply. Such decentralization has benefits, such as... Read More
April 20, 2017 in Research Papers

Systemic Risk

Abstract The success of Bitcoin, a decentralized cryptographic currency, and the many alternative cryptocurrencies it has inspired has raised new research questions on the opportunities and risks of these currencies,... Read More
April 20, 2017 in Research Papers

A Fistful Of Bitcoins: Characterizing Payments Among Men With No Names

Abstract Bitcoin is a purely online virtual currency, unbacked by either phys- ical commodities or sovereign obligation; instead, it relies on a combination of cryptographic protection and a peer-to-peer proto-... Read More
April 20, 2017 in Research Papers

Schmitt’s Critique Of Kelsenian Normativism

Abstract The aim of this paper is to underline the relevance of Schmitt’s critique of Kelsenian normativism in the context of today’s debate about the status of legal positivism. Schmitt’s... Read More
April 20, 2017 in Research Papers

Legal Norms And Normativity: An Essay In Genealogy

Abstract This book offers a ‘genealogical’ explanation of law’s normativity. The term ‘genealogical’ conveys a commitment to a non-metaphysical type of enquiry. While it explains how law, as a normative... Read More
April 20, 2017 in Research Papers

Making Law Bind: Legal Normativity As A Dynamic Concept

Abstract If ever there were an opportunity to ‘spring-clean’ jurisprudence of its most cumbersome words, ‘normativity’ would be high on the list. It sounds ugly, and it’s come to be... Read More
April 19, 2017 in Research Papers

Drafting A Constitution For ‘A Country Of Words’ 1

Abstract “We have a country of words. Speak speak so I can put my road on the stone of a stone. We have a country of words. Speak speak so... Read More
April 19, 2017 in Research Papers

From Constitutional Words To Statehood: The Case For Palestine

Abstract A lot of dreams have been invested in the Palestinian constitution. Its ambitious provisions promise a socially progressive, inclusive and tolerant State. Yet, today, these drafts have lost the... Read More
April 19, 2017 in Research Papers

The Responses Of Medical General Practitioners To Unreasonable Patient Demands For Antibiotics: A Study Of Medical Ethics Using Immersive Virtual RealityVIRTUAL REALITY

Abstract Abstract Background Dealing with insistent patient demand for antibiotics is an all too common part of a General Practitioner’s daily routine. This study explores the extent to which portable... Read More
April 19, 2017 in Research Papers

Contrasting Effects Of Strong Ties On SIR And SIS Processes In Temporal Networks

Abstract Most real networks are characterized by connectivity patterns that evolve in time following complex, non-Markovian, dynamics. Here we investigate the impact of this ubiquitous feature by studying the Susceptible-Infected-Recovered... Read More
April 19, 2017 in Research Papers

Individual Biases, Cultural Evolution, And The Statistical Nature Of Language Universals: The Case Of Colour Naming Systems

Abstract Language universals have long been attributed to an innate Universal Grammar. An alternative explanation states that linguistic universals emerged independently in every language in response to shared cognitive or... Read More
April 19, 2017 in Research Papers

Emergence Of Consensus In A Multi-Robot Network: From Abstract Models To Empirical Validation

Abstract Consensus dynamics in decentralised multiagent systems are subject to intense studies, and several different models have been proposed and analyzed. Among these, the naming game stands out for its... Read More
April 19, 2017 in Research Papers

Temporal Correlations In Social Multiplex Networks

Abstract Social interactions are composite, involve different communication layers and evolve in time. However, a rigorous analysis of the whole complexity of social networks has been hindered so far by... Read More
April 19, 2017 in Research Papers

Constant Maturity Credit Default SWAP Pricing With Market Models

Abstract In this work we derive an approximated no-arbitrage market valuation formula for Constant Maturity Credit Default Swaps (CMCDS). We move from the CDS options market model in Brigo (2004),... Read More
April 19, 2017 in Research Papers

Counterparty Risk FAQ: Credit VAR, PFE, CVA, DVA, Closout, Netting, Collateral, Re-Hypothecation, WWR, Basel, Funding, CCDS And Margin Lending

Abstract We present a dialogue on Counterparty Credit Risk touching on Credit Value at Risk (Credit VaR), Potential Future Exposure (PFE), Expected Exposure (EE), Expected Positive Exposure (EPE), Credit Valuation... Read More
April 19, 2017 in Research Papers

Impact Of Multiple Curve Dynamics In Credit Valuation Adjustments Under Collateralization

Abstract We present a detailed analysis of interest rate derivatives valuation undercredit risk and collateral modeling. We show how the credit and collateral extendedvaluation framework in Pallavicini et al (2011)... Read More
April 19, 2017 in Research Papers

Extrinsic Projection Of ITO SDES On Submanifolds With Applications To Nonlinear Ltering

Abstract We define the notion of the extrinsic Itˆo projection of astochastic differential equation (SDE) on a submanifold. This allows oneto systematically develop low dimensional approximations to high dimensionalSDEs in... Read More
April 19, 2017 in Research Papers

Restructuring Counterparty Credit Risk

Abstract We introduce an innovative theoretical framework to model derivative transactions between defaultable entities based on the principle of arbitrage freedom. Our framework extends the traditional formulations based on Credit... Read More
April 18, 2017 in Research Papers

Core-Periphery Structure In The Overnight Money Market: Evidence From the E-Mid Trading Platform

Abstract We explore the network topology arising from a dataset of the overnight interbank transactions on the e-MID trading platform from January 1999 to December 2010. In order to shed... Read More
April 18, 2017 in Research Papers

Network Approaches To Interbank Markets: Foreword

Abstract The 2007-2009 global financial crisis has brought to the fore the importance of the network of claims and liabilities emanating from the close ties between financial institutions. The potential... Read More
April 18, 2017 in Research Papers

Has The Banking System Become More Homogenous? Evidence From Banks’ Loans Portfolios

Abstract Have banks become more similar? In this paper we test this hypothesis using data on Japanese banks’ loan portfolios over the period 1996 – 2013. Using various similarity measures,... Read More
April 18, 2017 in Research Papers

Are Specialists ‘Special’? The Case Of Institutional Investors

Abstract Are specialists ‘special’? We answer this question using data on the stock portfolios of U.S. institutional investors for the period 1990-2014. Our main findings are as follows: first, we... Read More
April 18, 2017 in Research Papers

Community Analysis Of Global Financial Markets

Abstract We analyze the daily returns of stock market indices and currencies of 56 countries over the period of 2002–2012. We build a network model consisting of two layers, one... Read More
April 18, 2017 in Research Papers

The Detection Of Emerging Trends Using Wikipedia Traffic Data And Context Networks

Abstract Can online media predict new and emerging trends, since there is a relationship between trends in society and their representation in online systems? While several recent studies have used... Read More
April 18, 2017 in Research Papers

Networks: An Introduction

Abstract This is an introduction to the special issue titled “Networks of networks” that is in the making at Chaos, Solitons & Fractals. Recent research and reviews attest to the... Read More
April 18, 2017 in Research Papers

Dynamical Macroprudential Stress Testing Using Network Theory

Abstract The increasing frequency and scope of financial crises have made global financial stability one of the major concerns of economic policy and decision makers. This has led to the... Read More
April 18, 2017 in Research Papers

Dependency Relations Among International Stock Market Indices

Abstract We develop networks of international stock market indices using information and correlation based measures. We use 83 stock market indices of a diversity of countries, as well as their... Read More
April 18, 2017 in Research Papers

Network Science: A Useful Tool In Economics And Finance

Abstract The increasing frequency and scope of financial crises has made global financial stability one of the major concerns of economic policy and decision makers. Under this highly complex environment,... Read More
April 18, 2017 in Research Papers

Sector Dominance Ratio Analysis Of Financial Markets

Abstract In this paper we present a new measure to investigate the functional structure of financial markets, the Sector Dominance Ratio (SDR). We study the information embedded in raw and... Read More
April 18, 2017 in Research Papers

Can Online Media Predict Emerging Trends? Google Versus Wikipedia

Abstract Can online media predict new and emerging trends? The underlying assumption is that a direct relationship exists between trends in emerging technological and social trends and their representation in... Read More
April 18, 2017 in Research Papers

Cascading Failures In Interdependent Economic Networks

Abstract Throughout the past decade, there has been a significant advance in understanding the structure and function of networks, and mathematical models of networks are now widely used to describe... Read More
April 18, 2017 in Research Papers

Systemic Risk And Causality Dynamics Of The World International Shipping Market

Abstract Various studies have reported that many economic systems have been exhibiting an increase in the correlation between different market sectors, a factor that exacerbates the level of systemic risk.... Read More
April 18, 2017 in Research Papers

Vulnerability Of Network Of Networks

Abstract Our dependence on networks – be they infrastructure, economic, social or others – leaves us prone to crises caused by the vulnerabilities of these networks. There is a great... Read More
April 18, 2017 in Research Papers

On The Financial Market Consequences Of Brexit

Abstract Brexit creates new opportunities and new risks for the British and EU financial markets. Both could benefit, but a more likely outcome is a fall in the quality of... Read More
April 18, 2017 in Research Papers

A Proposed Research And Policy Agenda For Systemic Risk

Abstract The long-running Greek crisis and China’s recent stock market crash are the latest threats to the stability of the global financial system. But as this column explains, systemic risk... Read More
April 18, 2017 in Research Papers

Are Asset Managers Systemically Important?

Abstract Some financial authorities have proposed designating asset managers as systemically important financial institutions (SIFIs). This column argues that this would be premature and probably ill conceived. The motivation for... Read More
April 18, 2017 in Research Papers

Europe’s Proposed Capital Markets Union: Disruption Will Drive Investment And Innovation

Abstract The proposed EU capital markets union aims to revitalise Europe’s economy by creating efficient funding channels between providers of loanable funds and firms best placed to use them. This... Read More
April 18, 2017 in Research Papers

Systems And Systemic Risk In Finance And Economics

Abstract This paper examines the concept of systemic risk and provides an intuitive account of the economic thought on systems and the development of the notion of systemic risk. It... Read More
April 18, 2017 in Research Papers

Walrasian Foundations For Equilibria In Segmented Markets

Abstract We show that the equilibrium of the arbitraged economy is asymptotically Walrasian in the sense that it converges to the equilibrium of an appropriately defined competitive economy with no... Read More
April 18, 2017 in Research Papers

Foresight: The Future Of Computer Trading In Financial Markets (2012) Final Project Report

Abstract SRC researchers were involved in a study that explores how computer generated trading in financial markets will evolve over the next 10 years. The project was led by the... Read More
April 18, 2017 in Research Papers

Everybody Right, Everybody Wrong: Plural Rationalities In Macroprudential Regulation

Abstract Macroprudential policy has become increasingly popular in the aftermath of the Global Crisis, but it remains controversial. This column argues that vigorous disagreement is both inevitable and healthy, reflecting... Read More
April 18, 2017 in Research Papers

Why It Doesn’t Make Sense To Hold Bonds

Abstract Investor demand for bonds is very high. This column argues that this is surprising because under almost any likely inflation scenario, including central banks merely hitting their target inflation... Read More
April 18, 2017 in Research Papers

Cyber Risk As Systemic Risk

Abstract The threat to the financial system posed by cyber risk is often claimed to be systemic. This column argues against this, pointing out that almost all cyber risk is... Read More
April 18, 2017 in Research Papers

Practising Virtue: Inside International Arbitration, By David D. Caron, Stephan W. Schill, Abby Cohen Smutny, and Epaminontas E. Triantafilou

Abstract In 2013 ,the Institut de Droit International released its Tokyo Resolution on the ‘Legal Aspects of Recourse to Arbitration by an Investor Against the Authorities of the Host State... Read More
April 18, 2017 in Research Papers

Differentiating Among International Investment Disputes

Abstract Can investor-state arbitration tribunals, which exercise jurisdiction over limited claims involving discrete parties, render awards that deliver individualized justice while also promoting systemic fairness, predictability and coherence? The answer,... Read More