Universite Catholique de Louvain

Displaying 1-40 of 186 results

  • White Papers // Jun 2012

    Spectral Estimation of Conditional Random Graph Models for Large-Scale Network Data

    Generative models for graphs have been typically committed to strong prior assumptions concerning the form of the modeled distributions. Moreover, the vast majority of currently available models are either only suitable for characterizing some particular network properties (such as degree distribution or clustering coefficient), or they are aimed at estimating...

    Provided By Universite Catholique de Louvain

  • White Papers // Jan 2012

    Cryptanalysis of the CHES 2009/2010 Random Delay Countermeasure

    Inserting random delays in cryptographic implementations is often used as a countermeasure against side-channel attacks. Most previous works on the topic focus on improving the statistical distribution of these delays. For example, efficient random delay generation algorithms have been proposed at CHES 2009/2010. These solutions increase security against attacks that...

    Provided By Universite Catholique de Louvain

  • White Papers // Jan 2012

    Yet Another Ultralightweight Authentication Protocol That Is Broken

    Eghdamian and Samsudin published at ICIEIS 2011 an ultralight-weight mutual authentication protocol that requires few bitwise operations. The simplicity of the design makes the protocol very suitable to low-cost RFID tags. However, the authors demonstrate in this paper that the long-term key shared by the reader and the tag can...

    Provided By Universite Catholique de Louvain

  • White Papers // Jan 2012

    The Paths Towards IPv6 Multihoming

    Multihoming, the practice of connecting to multiple providers, is becoming highly popular. Due to the growth of the BGP routing tables in the Internet, the way to get multihomed in IPv6 is required to allow route aggregation in order to preserve the scalability of the interdomain routing system. After several...

    Provided By Universite Catholique de Louvain

  • White Papers // Nov 2011

    Untangling RFID Privacy Models

    This paper investigates privacy in Radio Frequency IDentification (RFID) systems. They survey the eight most well-known RFID privacy models. They examine their advantages and drawbacks, and provide a comprehensive comparison of these models. The first conclusion is that none of these models is complete, and the association of all their...

    Provided By Universite Catholique de Louvain

  • White Papers // Nov 2011

    Elliptic Curve Cryptography in JavaScript

    The authors document their development of a library for elliptic curve cryptography in JavaScript. They discuss design choices and investigate optimizations at various levels, from integer multiplication and field selection to various fixed-based EC point multiplication techniques. Relying on a small volume of public precomputed data, their code provides a...

    Provided By Universite Catholique de Louvain

  • White Papers // Nov 2011

    An Optimal Key Enumeration Algorithm and its Application to Side-Channel Attacks

    Methods for enumerating cryptographic keys based on partial information obtained on key bytes are important tools in cryptanalysis. This paper discusses two contributions related to the practical application and algorithmic improvement of such tools. As a result, cryptographic key sizes for such ciphers typically range between 80 and 128 bits....

    Provided By Universite Catholique de Louvain

  • White Papers // Jun 2011

    Efficient Methods for Exploiting Faults Induced at AES Middle Rounds

    Faults occurred during the operations in a hardware device cause many problems such as performance deterioration, unreliable output, etc. If a fault occurs in a cryptographic hardware device, the effect can be even serious because an adversary may exploit it to find the secret information stored in the device. More...

    Provided By Universite Catholique de Louvain

  • White Papers // Jun 2011

    Traffic Engineering for Multiple Spanning Tree Protocol in Large Data Centers

    The size of the capacity of data centers have been growing significantly during the last years. Most data centers rely on switched Ethernet networks. A drawback of the Ethernet technology is that it relies on the spanning tree protocol (or variants of it) to select the links that are used...

    Provided By Universite Catholique de Louvain

  • White Papers // Jun 2011

    Univariate Side Channel Attacks and Leakage Modeling

    Differential power analysis is a powerful cryptanalytic technique that exploits information leaking from physical implementations of cryptographic algorithms. During the two last decades numerous variations of the original principle have been published. In particular, the univariate case, where a single instantaneous leakage is exploited, has attracted much research effort. In...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2011

    Rectangular Patch Antenna Performances Improvement Employing Slotted Rectangular Shaped for WLAN Applications

    Recently, there has been a growing demand of microwave, and wireless communication systems in various applications resulting in an interest to improve antenna performances. Modern communication systems and instruments such as Wireless Local Area Networks (WLAN), mobile handsets require lightweight, small size and low cost. The selection of microstrip antenna...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2011

    Generic Side-Channel Distinguishers: Improvements and Limitations

    Mutual Information Analysis (MIA) is a generic side-channel distinguisher. Its goal is to allow key recoveries against any type of implementation, under minimum assumptions on the underlying hardware. Such distinguishers are particularly interesting in view of recent technological advances. Indeed, the traditional leakage models used in side-channel attacks, based on...

    Provided By Universite Catholique de Louvain

  • White Papers // Feb 2011

    IP Geolocation Databases: Unreliable?

    The most widely used technique for IP geolocation consists in building a database to keep the mapping between IP blocks and a geographic location. Several databases are available and are frequently used by many services and web sites in the Internet. Contrary to widespread belief, geolocation databases are far from...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    How Stochasticity And Emergencies Disrupt The Surgical Schedule

    In health care system, the operating theatre is recognized as having an important role, notably in terms of generated income and cost. Its management, and in particular its scheduling, is thus a critical activity, and has been the subject of many studies. However, the stochasticity of the operating theatre environment...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    Fair Allocation Of Indivisible Goods Among Two Agents

    One must allocate a finite set of indivisible goods among two agents without monetary compensation. The authors impose Pareto-efficiency, anonymity, a weak notion of no-envy, a welfare lower bound based on each agent's ranking of the sets of goods, and a monotonicity property relative to changes in agents' preferences. They...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    The Economics Of Airport Noise: How To Manage Markets For Noise Licenses

    Noise-induced pollution constitutes a hot and topical societal problem for all major airports. This paper discusses various issues in the implementation of a market for noise licenses as a solution to solve the noise externality between the residents located around airports and the aircrafts moving in and to airports. The...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    Dynamic Joint Investments In Supply Chains Under Information Asymmetry

    Supply chain management involves the selection, coordination and motivation of independently operated suppliers. However the central planner's perspective in operations management translates poorly to vertically separated chains, where suppliers may have rational myopic reasons to object to full in-formation sharing and centralized decision rights. Particular problems occur when a downstream...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    A Theory Of Soft Capture

    In this paper, the authors propose a model for regulatory capture that is based on information transmission and asymmetric information. In a three-tier model, a regulator is charged by a political principal to provide a signal for the type of a regulated firm. Only the firm can observe his type...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    Influence Networks

    Some behaviors, ideas or technologies spread and become persistent in society, whereas others vanish. This paper analyzes the role of social influence in determining such distinct collective outcomes. Agents are assumed to acquire information from others through certain sampling process that generates an influence network, and they use simple rules...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    Voting Over Piece-wise Linear Tax Methods

    The authors analyze the problem of choosing the most appropriate method for apportioning taxes in a democracy. They consider a simple theoretical model of taxation and restrict their attention to piece-wise linear tax methods, which are almost ubiquitous in advanced democracies world-wide. They show that if they allow agents to...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    Stability And Fairness In Models With A Multiple Membership

    This paper studies a model of coalition formation for the joint production (and finance) of public projects, in which agents may belong to multiple coalitions. The authors show that, if projects are divisible, there always exists a stable (secession-proof) structure, i.e., a structure in which no coalition would reject a...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    Product Innovation And Market Acquisition Of Firms

    The paper explores the incentives for an incumbent firm to acquire an entrant willing to sell a product innovation, rather than openly compete with this entrant and, in case of acquisition, the incentives to sell simultaneously the existing products and the new one, rather than specializing on a single variant....

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    Bargaining And Delay In Patent Licensing

    The authors consider a model of licensing of a non-drastic innovation in which the patent holder (an outside innovator) negotiates either up-front fixed fees or per-unit royal-ties with two firms producing horizontally differentiated brands and competing ? la Cournot. They investigate how licensing schemes (fixed fee or per-unit royalty) and...

    Provided By Universite Catholique de Louvain

  • White Papers // Dec 2010

    Unions' Relative Concerns And Strikes In Wage Bargaining

    The authors consider a model of wage determination with private information in a duopoly. They investigate the effects of unions having relative concerns on the negotiated wage and the strike activity. They show that an increase of unions' relative concerns has an ambiguous effect on the strike activity. They have...

    Provided By Universite Catholique de Louvain

  • White Papers // Nov 2010

    Success: Talent, Intelligence Or Beauty ?

    The authors analyze the Celebrity 100 annual list of the world's most "Powerful celebrities" compiled and published by Forbes Magazine. The lists provide an interesting collection of people that includes their earnings and the perception of citizens concerning the attributes that made them become celebrities. They analyze the relationship between...

    Provided By Universite Catholique de Louvain

  • White Papers // Nov 2010

    Property Rights With Biological Spillovers: When Hardin Meets Meade

    In an overlapping generations setup the authors address the issue of the optimal number of property rights to allocate over a natural resource when the goal is to maximize the stock of the natural resource at the steady state. They assume that the effect of the property rights regime on...

    Provided By Universite Catholique de Louvain

  • White Papers // Nov 2010

    Optimal Pricing And Capacity Choice For A Public Service Under Risk Of Interruption

    The authors develop rules for pricing and capacity choice for an interruptible service that recognize the interdependence between consumers' perceptions of system reliability and their market behavior. Consumers post ex ante demands, based on their expectations on aggregate demand. Posted demands are met if ex post supply capacity is sufficient....

    Provided By Universite Catholique de Louvain

  • White Papers // Nov 2010

    Lower Bounds Rule!

    The authors propose two axioms that introduce lower bounds into resource monotonicity requirements for rules for the problem of adjudicating conflicting claims suppose the amount to divide increases. The first axiom requires that two claimants whose lower bound changes equally experience an equal change in awards. The second axiom requires...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Competitively Neutral Universal Service Obligations

    Universal service obligations impose specific costs on the universal service provider. The measure of these costs and their financing has been studied along two complementary lines of reasoning: is the universal service obligation sustainable? Who should bear its costs? Most often, a two-step procedure is put forward. In a first...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Digital Piracy : Theory

    This paper reviews recent theoretical contributions on digital piracy. It starts by elaborating on the reasons for intellectual property protection, by reporting a few facts about copyright protection, and by examining reasons to become a digital pirate. Next, it provides an exploration of the consequences of digital piracy, using a...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Family Policies : What Does The Standard Endogenous Fertility Model Tell Us ?

    Very few studies have explored the optimality properties of the "standard model" of fertility where parents must determine their optimal trade-off between quality and quantity. The present paper works to fill that gap and find three main results. First, when there exist positive externalities in the accumulation of human capital,...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    The Optimal Trade-off Between Quality And Quantity With Uncertain Child Survival

    The present paper investigates a standard model of endogenous fertility when child survival to adulthood is uncertain. In this framework, the author first shows that facing the risk their children die before reaching adulthood; parents don't always formulate a precautionary demand for children. Indeed, there exists a non-empty set of...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Tradable Pollution Permits In Dynamic General Equilibrium: Can Optimality And Acceptability Be Reconciled?

    In this paper the authors study the optimal growth path and its decentralization in a two-sector overlapping generations model with pollution. One sector (power generation) is polluting and the other (final good) is not. Pollution is regulated by tradable emission permits. The issue is whether the optimal growth path can...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Fixed-charge Transportation On A Path: Optimization, LP Formulations And Separation

    The fixed-charge transportation problem is an interesting problem in its own right. This paper further motivates its study by showing that it is both a special case and a strong relaxation of the big-bucket multi-item lot-sizing problem. The authors then provide a polyhedral analysis of the polynomially solvable special case...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Measuring The Variability In Supply Chains With The Peakedness

    This paper introduces a novel way to measure the variability of order flows in supply chains, the peakedness. The peakedness can be used to measure the variability assuming the order flow is a general point process. The authors show basic properties of the peakedness, and demonstrate its computation from real-time...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Adaptation And Mitigation In Long-term Climate Policies

    The paper analytically explores the optimal policy mix between mitigation and environmental adaptation against climate change at a macroeconomic level. The constructed economic-environmental model is formulated as a social planner problem with the adaptation and abatement investments as separate decision variables. The authors prove the existence of a unique steady...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Innovation, Antidumping And Retaliation

    The authors study the effect of contingency trade policy in a multi-country oligopoly model with and without R&D opportunities. They show that firms benefit from unilateral protection but initiate AntiDumping (AD) only against the targets domiciled in substantially smaller countries. Also, AD filings are more likely when firms face R&D...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    Mixing Sets Linked By Bidirected Paths

    Recently there has been considerable research on simple mixed-integer sets, called mixing sets, and closely related sets arising in incapacitated and constant capacity lot-sizing. This in turn has led to study of more general sets, called network-dual sets, for which it is possible to derive extended formulations whose projection gives...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2010

    The Benefits Of Cooperation Under Uncertainty: The Case Of Climate Change

    This paper presents an analysis of the behavior of countries defining their climate policies in an uncertain context. The analysis is made using the S-CWS model, a stochastic version of an integrated assessment growth model. The model includes a stochastic definition of the climate sensitivity parameter. The authors show that...

    Provided By Universite Catholique de Louvain

  • White Papers // Sep 2010

    A Coalitional Procedure Leading To A Family Of Bankruptcy Rules

    The authors provide a general coalitional procedure that characterizes a family of rules for bankruptcy problems inspired by the Talmud. A bankruptcy problem refers to a situation in which one has to distribute, among a group of agents, a perfectly divisible commodity whose available amount is not enough to cover...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2008

    To Acquire, Or To Compete? An Entry Dilemna

    In this paper the authors address the following question: is it more profitable, for an entrant in a differentiated market, to acquire an existing firm than to compete? They illustrate the answer by considering competition in the banking sector. In this paper, they analyze under which conditions a foreign bank...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2008

    Market Integration In Network Industries

    What is the effect of product market integration on the market equilibrium in the presence of international network externalities in consumption? To address this question, the authors set up a spatial two-country model and they find that the economic forces at work may have an ambiguous effect on prices. They...

    Provided By Universite Catholique de Louvain

  • White Papers // Apr 2009

    Low Complexity Link State Multipath Routing

    Link state routing protocols such as OSPF or IS-IS currently use only best paths to forward IP packets throughout a domain. The optimality of sub-paths ensures consistency of hop by hop forwarding although paths, calculated using Dijkstra's algorithm, are recursively composed. According to the link metric, the diversity of existing...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2011

    Generic Side-Channel Distinguishers: Improvements and Limitations

    Mutual Information Analysis (MIA) is a generic side-channel distinguisher. Its goal is to allow key recoveries against any type of implementation, under minimum assumptions on the underlying hardware. Such distinguishers are particularly interesting in view of recent technological advances. Indeed, the traditional leakage models used in side-channel attacks, based on...

    Provided By Universite Catholique de Louvain

  • White Papers // Sep 2010

    A Coalitional Procedure Leading To A Family Of Bankruptcy Rules

    The authors provide a general coalitional procedure that characterizes a family of rules for bankruptcy problems inspired by the Talmud. A bankruptcy problem refers to a situation in which one has to distribute, among a group of agents, a perfectly divisible commodity whose available amount is not enough to cover...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2011

    Rectangular Patch Antenna Performances Improvement Employing Slotted Rectangular Shaped for WLAN Applications

    Recently, there has been a growing demand of microwave, and wireless communication systems in various applications resulting in an interest to improve antenna performances. Modern communication systems and instruments such as Wireless Local Area Networks (WLAN), mobile handsets require lightweight, small size and low cost. The selection of microstrip antenna...

    Provided By Universite Catholique de Louvain

  • White Papers // Jun 2011

    Efficient Methods for Exploiting Faults Induced at AES Middle Rounds

    Faults occurred during the operations in a hardware device cause many problems such as performance deterioration, unreliable output, etc. If a fault occurs in a cryptographic hardware device, the effect can be even serious because an adversary may exploit it to find the secret information stored in the device. More...

    Provided By Universite Catholique de Louvain

  • White Papers // Jun 2011

    Univariate Side Channel Attacks and Leakage Modeling

    Differential power analysis is a powerful cryptanalytic technique that exploits information leaking from physical implementations of cryptographic algorithms. During the two last decades numerous variations of the original principle have been published. In particular, the univariate case, where a single instantaneous leakage is exploited, has attracted much research effort. In...

    Provided By Universite Catholique de Louvain

  • White Papers // Feb 2011

    IP Geolocation Databases: Unreliable?

    The most widely used technique for IP geolocation consists in building a database to keep the mapping between IP blocks and a geographic location. Several databases are available and are frequently used by many services and web sites in the Internet. Contrary to widespread belief, geolocation databases are far from...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2009

    Strategic R&D Investment, Competitive Toughness And Growth

    The authors' show, within a single industry, the possibility that R&D-investment be non-monotonically related to competitive toughness: increasing when competition is soft and decreasing when competition is tough. This possibility results from the combination of a Schumpeterian markup squeezing effect discouraging innovation, and a concentration effect spurring innovators. It is...

    Provided By Universite Catholique de Louvain

  • White Papers // Apr 2009

    Maintenance And Investment: Complements Or Substitutes? A Reappraisal

    A benchmark AK optimal growth model with maintenance expenditures and endogenous utilization of capital is considered within an explicit vintage capital framework. Scrapping is endogenous, and the model allows for a clean distinction between age and usage dependent capital depreciation and obsolescence. It is also shown that in this set-up...

    Provided By Universite Catholique de Louvain

  • White Papers // Sep 2010

    On The Recovery Path During A Liquidity Trap: Do Financial Frictions Matter For Fiscal Multipliers?

    This paper investigates the effects of a fiscal stimulus when financial frictions and a liquidity trap are present. These two conditions make a government spending expansion and a reduction in capital income taxes more efficient in stimulating output. In contrast, a reduction in labor income taxes may aggravate the economic...

    Provided By Universite Catholique de Louvain

  • White Papers // Aug 2009

    Path Diversity in Energy-Efficient Wireless Sensor Networks

    Energy efficiency is one of the most important issues to be tackled in wireless sensor networks. Activity scheduling protocols aim at prolonging the network lifetime by reducing the proportion of nodes that participate in the application. Among the vast range of criteria existing to schedule nodes activities, area coverage by...

    Provided By Universite Catholique de Louvain

  • White Papers // Jun 2011

    Traffic Engineering for Multiple Spanning Tree Protocol in Large Data Centers

    The size of the capacity of data centers have been growing significantly during the last years. Most data centers rely on switched Ethernet networks. A drawback of the Ethernet technology is that it relies on the spanning tree protocol (or variants of it) to select the links that are used...

    Provided By Universite Catholique de Louvain

  • White Papers // Jun 2009

    Community Computing: Comparisons Between Rural and Urban Societies Using Mobile Phone Data

    The authors present a comparative analysis of the behavioral dynamics of rural and urban societies using four years of mobile phone data from all 1.4M subscribers within a small country. They use information from communication logs and top up denominations to characterize attributes such as socioeconomic status and region. They...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2009

    Rate-Optimized Power Allocation for DF-Relayed OFDM Transmission under Sum and Individual Power Constraints

    The authors consider an OFDM (Orthogonal Frequency Division Multiplexing) point-to-point transmission scheme which is enhanced by means of a relay. Symbols sent by the source during a first time slot may be (but are not necessarily) retransmitted by the relay during a second time slot. The relay is assumed to...

    Provided By Universite Catholique de Louvain

  • White Papers // Jul 2010

    Mining Source Code for Structural Regularities

    During software development, design rules and contracts in the source code are often encoded through regularities, such as API usage protocols, coding idioms and naming conventions. The structural regularities that govern a program can aid in comprehension and maintenance of the application, but are often implicit or undocumented. Tool support...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2009

    On Efficiency, Concentration And Welfare

    The welfare impact of a merger involves the market power offense and the efficiency defense. Salant et al. (1983) show that mergers among symmetric firms are unprofitable except for monopolization. The authors characterize the limit to this merger paradox in a simple linear Cournot oligopoly with asymmetric costs. Farrell and...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2009

    Urban Concentration And Economic Growth: Checking For Specific Regional Effects

    By using a semi parametric specification, the authors examine the impact of urban concentration in economic growth on different groups of countries that they classify according to a geographical criterion or according to their level of development. Facing a significant proportion of missing data, they handle that problem with a...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2009

    Aging Society, Health And The Environment

    Both environmental quality and health care expenditure are determinants of health and life expectancy, but the support for them appears to be different according to the electors' age, with a relatively larger support for health expenditure among the elderly as it is generally effective on a shorter horizon than environmental...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2009

    Allocation Of Fixed Costs And The Weighted Shapley Value

    The weighted value was introduced by Shapley in 1953 as an asymmetric version of his value. Since then several axiomatizations have been proposed including one by Shapley in 1981 specifically addressed to cost allocation, a context in which weights appear naturally. It was at the occasion of a comment in...

    Provided By Universite Catholique de Louvain

  • White Papers // May 2009

    On The Nature Of Price Competition Under Universal Service Obligations: A Note

    The imposition of universal coverage and uniform pricing constraints, as part of the universal service obligations, makes the universal service provider less aggressive in the price game when it competes with a firm that does not cover the whole set of markets. In this paper, the authors fully characterize the...

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  • White Papers // Apr 2009

    On The Public Economics Of Annuities With Differential Mortality

    This paper studies the problem of redistribution between individuals having different mortality rates. The authors use a continuous time model in which there are two types of individuals characterized by different survival probability paths. Individual preferences are represented by a generalized life cycle utility function which can exhibit temporal risk...

    Provided By Universite Catholique de Louvain

  • White Papers // Apr 2009

    Clean Technology Adoption And Its Influence On Tradeable Emission Permit Prices

    In this paper the authors give an example in which the price of tradable emission permits increases despite firms' adoption of a less polluting technology. This is in contrast with Montero (2002) and Parry (1998), among others. If two Counot players switch to a cleaner technology, the price for permits...

    Provided By Universite Catholique de Louvain

  • White Papers // Apr 2009

    On Uncertainty When It Affects Successive Markets

    In this paper, the authors examine how uncertainty can affect successive markets, when uncertainty can jointly influence both the upstream and downstream markets' conditions. The main result of the paper is that the equilibrium input and output quantities under stochastic dependence can be higher or lower than the corresponding quantities...

    Provided By Universite Catholique de Louvain

  • White Papers // Apr 2009

    Lot-sizing With Stock Upper Bounds And Fixed Charges

    Here the authors study the discrete lot-sizing problem with an initial stock variable and an associated variable upper bound constraint. This problem is of interest in its own right, and is also a natural relaxation of the constant capacity lot-sizing problem with upper bounds and fixed charges on the stock...

    Provided By Universite Catholique de Louvain

  • White Papers // Apr 2009

    Understanding Volatility Dynamics In The EU-ETS Market: Lessons From The Future

    In this paper the authors study the short term price behavior of December 2008 future prices for EU emission allowances. They model returns and volatility dynamics of this price showing that a standard ARMA-GARCH framework is not adequate and that the gaussianity assumption is rejected due to the occurrence of...

    Provided By Universite Catholique de Louvain

  • White Papers // Apr 2009

    Dynamic Core-theoretic Cooperation In A Two-dimensional International Environmental Model

    This paper deals with cooperation issues in international pollution problems in a two dimensional dynamic framework implied by the accumulation of the pollutant and of the capital goods. Assuming that countries do reevaluate at each period the advantages to cooperate or not given the current stocks of pollutant and capital,...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2009

    What Do We Know About Comparing Aggregate And Disaggregate Forecasts?

    This paper compares the performance of "Aggregate" and "Disaggregate" predictors in forecasting contemporaneously aggregated vector ARMA processes. An aggregate predictor is built by forecasting directly the aggregate process, as it results from contemporaneous aggregation of the data generating vector process. A disaggregate predictor is obtained by aggregating univariate forecasts for...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2009

    Can Education Be Good For Both Growth And The Environment?

    The authors develop an overlapping generation's model of growth and the environment with public policy on education. Beyond the traditional mechanisms through which knowledge, growth and the environment interplay, they stress out the role played by education on environmental awareness. Assuming first that environmental awareness is constant, they show the...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2009

    The Tradeoff Between Growth And Redistribution: Elie In An Overlapping Generations Model

    The ELIE scheme of Kolm taxes labor capacities instead of labor income in order to circumvent the distortionary effect of taxation on labor supply. Still, Kolm does not study the impact of ELIE on human capital formation and investment. In this paper, the authors build an Overlapping Generations (OLG) model...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2009

    What Good Is Happiness?

    The heterogeneity of the available physical capital with respect to productivity and emission intensity is an important factor for policy design, especially in the presence of emission restrictions. In a vintage capital model, reducing pollution requires to change the capital structure through investment in cleaner machines and to scrap the...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2009

    Prices Versus Quantities In A Vintage Capital Model

    The heterogeneity of the available physical capital with respect to productivity and emission intensity is an important factor for policy design, especially in the presence of emission restrictions. In a vintage capital model, reducing pollution requires to change the capital structure through investment in cleaner machines and to scrap the...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2009

    Bayesian Option Pricing Using Mixed Normal Heteroskedasticity Models

    While stochastic volatility models improve on the option pricing error when compared to the Black-Scholes-Merton model, mispricing remains. This paper uses mixed normal heteroskedasticity models to price options. The model allows for significant negative skewness and time varying higher order moments of the risk neutral distribution. Parameter inference using Gibbs...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2009

    On Tax Competition, Public Goods Provision And Jurisdictions' Size

    In this paper, the authors analyze competition among jurisdictions to attract firms through low taxes on capital and/or high level of public goods, which enhance firms' productivity. They assume that the competing jurisdictions are different in (population) size and that the mobility of capital is costly. They find that for...

    Provided By Universite Catholique de Louvain

  • White Papers // Mar 2009

    Promoting Clean Technologies Under Imperfect Competition

    The authors develop a general equilibrium multi-sector vintage capital model with energy-saving technological progress and an explicit energy market to study the impact of investment subsidies on investment and output. Energy and capital are assumed to be complementary in the production process. New machines are less energy consuming and scrapping...

    Provided By Universite Catholique de Louvain

  • White Papers // Feb 2009

    Adding Independent Risks In An Insurance Portfolio: Which Shape For The Insurers? Preferences?

    Many papers have adopted the expected utility paradigm to analyze insurance decisions. Insurance companies manage policies by growing, by adding independent risks. Even if adding risks generally ultimately decreases the probability of insolvency, the impact on the insurer's expected utility is less clear. Indeed, it is not true that the...

    Provided By Universite Catholique de Louvain

  • White Papers // Oct 2009

    RFID Distance Bounding Multistate Enhancement

    Distance bounding protocols aim at avoiding relay attacks during an authentication process. Such protocols are especially important in RFID, where mounting a relay attack between a low-capability prover and a remote verifier is a realistic threat. Several distance bounding protocols suitable for RFID have been recently suggested, all of which...

    Provided By Universite Catholique de Louvain

  • White Papers // Aug 2009

    RFID Distance Bounding Protocol With Mixed Challenges to Prevent Relay Attacks

    RFID systems suffer from different location-based attacks such as distance fraud, mafia fraud and terrorist fraud attacks. Among them mafia fraud attack is the most serious since this attack can be mounted without the notice of both the reader and the tag. An adversary performs a kind of man-in-the-middle attack...

    Provided By Universite Catholique de Louvain

  • White Papers // Jun 2012

    Spectral Estimation of Conditional Random Graph Models for Large-Scale Network Data

    Generative models for graphs have been typically committed to strong prior assumptions concerning the form of the modeled distributions. Moreover, the vast majority of currently available models are either only suitable for characterizing some particular network properties (such as degree distribution or clustering coefficient), or they are aimed at estimating...

    Provided By Universite Catholique de Louvain