University of Copenhagen

Displaying 1-27 of 27 results

  • White Papers // Feb 2013

    Cooperative e-Learning Approach Based on Cloud Computing

    E-learning refers to the support of modern communications and computer-based applications for two fundamental human-development processes, learning and teaching. In the authors' paper, they want to emphasize the benefits of e-learning within Small and Medium Enterprises (SMEs) from the novel context of cloud computing. This paper proposes a cooperative approach...

    Provided By University of Copenhagen

  • White Papers // Dec 2011

    A PKI Case Study on the Issues of the Personal Security Profile for Web and Mail Agents

    In this paper, the authors detail the actual problems encountered while using digital certificates with actual web browsers and mail user agents. After setting up a public-key infrastructure for the community of users within the University of Craiova, they have begun testing the issued digital certificates on different usage scenarios....

    Provided By University of Copenhagen

  • White Papers // Oct 2011

    A Comparative Analysis of Enterprises Based on Size and Regions of Development

    In every country of the European Union SME (Small and Medium sized Enterprises) generates the biggest part of the turnover and offers jobs for the majority of the population. Romania does not stray from this rule: in 2009, the turnover of SME was more than 60% of the total (Hotels...

    Provided By University of Copenhagen

  • White Papers // Mar 2011

    Budget Consolidations In The Aftermath Of A Financial Crisis: Lessons From The Swedish Budget Consolidation 1994-1997

    The Expansionary Fiscal Contraction (EFC) hypothesis suggests that a major fiscal consolidation leads to an economic expansion. The authors test this hypothesis, and the implied non - linear responses of the economy to large and small changes in fiscal policy using data from the Swedish budget consolidation 1994-1997 that was...

    Provided By University of Copenhagen

  • White Papers // Mar 2011

    Java Interrogation of an Homogeneous System of Inheritance Knowledge Bases by Client-Server Technology

    The subject developed in this paper is connected by the remote interrogation of a knowledge base. The authors suppose have a collection of the same kind of knowledge bases, namely, extended inheritance knowledge bases. They use the client-server technology to query each element of such a system of knowledge bases....

    Provided By University of Copenhagen

  • White Papers // Jan 2011

    Financial Instability, Credit Cycles And Monetary Policy

    There seems to be a general consensus among macroeconomists and central bankers that the global financial crisis of 2007-2009 to a large extent was driven by credit growth. The same goes for earlier financial crises, e.g. as shown by Reinhart and Rogoff (2009). In his opening address at the ECB...

    Provided By University of Copenhagen

  • White Papers // Jan 2011

    Solving Demand Versions of Interprocedural Analysis Problems

    This paper concerns the solution of demand versions of interprocedural analysis problems. In a demand version of a program-analysis problem, some piece of summary information (e.g., The dataflow facts holding at a given point) is to be reported only for a single program element of interest (Or a small number...

    Provided By University of Copenhagen

  • White Papers // Dec 2010

    Cost Linkages Transmit Volatility Across Markets

    The authors present and test a model where increasing marginal costs channel foreign shocks to domestic sales. A positive shock in the foreign market spurs the firm to increase production and exports. This increase raises the marginal cost of production and leads exporters to substitute output from the domestic to...

    Provided By University of Copenhagen

  • White Papers // Oct 2010

    A Graphical Approach to Progress for Structured Communication in Web Services

    The authors investigate a graphical representation of session invocation interdependency in order to prove progress for the p-calculus with sessions under the usual session typing discipline. They show that those processes whose associated dependency graph is acyclic can be brought to reduce. They call such processes transparent processes. Additionally, they...

    Provided By University of Copenhagen

  • White Papers // Oct 2010

    The Impact Of Fiscal Governance On Bond Markets: Evidence from Late Budgets And State Government Borrowing Costs

    Does fiscal governance affect government borrowing costs? The authors operationalize fiscal governance as the ability of governments to pass a budget on time and, using a unique data set on budget enactment dates, analyze the effect of such late budgets on government bond yield spreads. Based on a sample of...

    Provided By University of Copenhagen

  • White Papers // Sep 2010

    Tax Evasion And Swiss Bank Deposits

    Bank deposits in jurisdictions with banking secrecy constitute an effective tool to evade taxes on interest income. A recent EU reform reduces the scope for this type of tax evasion by introducing a source tax on interest income earned by EU residents in Switzerland and several other jurisdictions with banking...

    Provided By University of Copenhagen

  • White Papers // Sep 2010

    Embedding Conditional Knowledge Bases into Question Answering Systems and Java Implementation

    A conditional schema is a graph-based structure which is able to represent conditional knowledge. The inference mechanism corresponding to the conditional schema representations was developed. In this paper, the authors propose a question answering system that can represent and process conditional knowledge using these mechanisms. In order to accomplish this...

    Provided By University of Copenhagen

  • White Papers // May 2010

    The Theory Of Optimal Taxation: New Developments And Policy Relevance

    The theory of optimal taxation has often been criticized for being of little practical policy relevance, due to a lack of robust theoretical results. This paper argues that recent advances in optimal tax theory has made that theory easier to apply and may help to explain some current trends in...

    Provided By University of Copenhagen

  • White Papers // May 2010

    Fiscal Transparency And Procyclical Fiscal Policy

    This paper examines why fiscal policy is procyclical in developing as well as developed countries. The authors introduce the concept of fiscal transparency into a model of retrospective voting, in which a political agency problem between voters and politicians generates a procyclical bias in government spending. The introduction of fiscal...

    Provided By University of Copenhagen

  • White Papers // May 2010

    Demand Uncertainty: Exporting Delays And Exporting Failures

    This paper presents a model of trade that explains why firms wait to export and why many exporters fail. Firms face uncertain demands that are only realized after the firm enters the destination. The model retools the timing of uncertainty resolution found in productivity heterogeneity models. This retooling addresses several...

    Provided By University of Copenhagen

  • White Papers // Apr 2010

    Late Budgets

    The budget forms the legal basis of government spending. If a budget is not in place at the beginning of the fiscal year, planning as well as current spending are jeopardized and government shutdown may result. This paper develops a continuous-time war-of-attrition model of budgeting in a presidential style-democracy to...

    Provided By University of Copenhagen

  • White Papers // Mar 2010

    Applications of Proc ESM in SAS 9.2

    In this paper the various facilities of Proc ESM in SAS 9.2 will be demonstrated using a dataset of 87789 registrations of the speed of passing cars on a highway near Copenhagen. Proc ESM (for Exponential Smoothing Models) was introduced in SAS version 9.2 as a procedure corresponding to more...

    Provided By University of Copenhagen

  • White Papers // Feb 2010

    Important Aspects of Using Geographical Information System

    The first part of this paper presents a short introduction in GIS technology and its application domains. The second part includes a classification of the GIS products, future research possibilities and a short presentation of equipments for data acquisition. Part three contains a list of the most attractive GIS projects...

    Provided By University of Copenhagen

  • White Papers // Jan 2010

    On the Efficiency of Fast RSA Variants in Modern Mobile Phones

    Modern mobile phones are increasingly being used for more services that require modern security mechanisms such as the public-key cryptosystem RSA. It is, however, well-known that public-key cryptography demands considerable computing resources and that RSA encryption is much faster than RSA decryption. It is consequently an interesting question if RSA...

    Provided By University of Copenhagen

  • White Papers // Aug 2009

    Optimal Growth When Environmental Quality Is A Research Asset

    If environmental quality positively affects the productivity of labor in R&D and pollution is caused by the use of a non-renewable resource, it is socially optimal to postpone extraction and to intertemporally adjust R&D e ort. Sustained growth is feasible and optimal even though the R&D sector rests on the...

    Provided By University of Copenhagen

  • White Papers // Aug 2009

    Relational Parametricity for Computational Effects

    According to Strachey, a polymorphic program is parametric if it applies a uniform algorithm independently of the type instantiations at which it is applied. The notion of relational parametricity, introduced by Reynolds, is one possible mathematical formulation of this idea. Relational parametricity provides a powerful tool for establishing data abstraction...

    Provided By University of Copenhagen

  • White Papers // Aug 2009

    A Mean-variance Explanation Of FDI Flows To Developing Countries

    An important feature of the world economy is the close global and regional integration due to strong trade and investment relations among countries. The high degree of integration between countries is likely to give rise to business cycle synchronization in which case shocks will spillover from one country to another....

    Provided By University of Copenhagen

  • White Papers // Jul 2009

    Mote-Based Online Anomaly Detection Using Echo State Networks

    Sensor networks deployed for scientific data acquisition must inspect measurements for faults and events of interest. Doing so is crucial to ensure the relevance and correctness of the collected data. In this paper the authors unify fault and event detection under a general anomaly detection framework. They use machine learning...

    Provided By University of Copenhagen

  • White Papers // Jan 2009

    Entrepreneurship, Job Creation, And Wage Growth

    This paper analyses the importance of entrepreneurs for job creation and wage growth. Relying on unique data that cover all establishments, firms and individuals in the Danish private sector, the authors are able to distil a number of different subsets from the total set of new establishments - subsets which...

    Provided By University of Copenhagen

  • White Papers // Jan 2009

    uFLIP: Understanding Flash IO Patterns

    Does the advent of flash devices constitute a radical change for secondary storage? How should database systems adapt to this new form of secondary storage? Before the authors can answer these questions, they need to fully understand the performance characteristics of flash devices. More specifically, they want to establish what...

    Provided By University of Copenhagen

  • White Papers // Dec 2008

    Evaluating Multicast Routing Algorithms' Performance and Execution Time

    In this paper, an evaluation of the network routing algorithms is made. Problems that arise in routing are treated, each presented in different scenarios in order to obtain a result in comparing different topologies. The comparison analysis is pursuing obtaining a result over the performance of the network. In order...

    Provided By University of Copenhagen

  • White Papers // Nov 2008

    Determinacy, Stock Market Dynamics And Monetary Policy Inertia

    This paper deals with the stability properties of an economy where the central bank is concerned with stock market developments. The authors introduce a Taylor rule reacting to stock price growth rates along with inflation and output gap in a New-Keynesian setup. They explore the performance of this rule from...

    Provided By University of Copenhagen

  • White Papers // Dec 2008

    Evaluating Multicast Routing Algorithms' Performance and Execution Time

    In this paper, an evaluation of the network routing algorithms is made. Problems that arise in routing are treated, each presented in different scenarios in order to obtain a result in comparing different topologies. The comparison analysis is pursuing obtaining a result over the performance of the network. In order...

    Provided By University of Copenhagen

  • White Papers // Feb 2010

    Important Aspects of Using Geographical Information System

    The first part of this paper presents a short introduction in GIS technology and its application domains. The second part includes a classification of the GIS products, future research possibilities and a short presentation of equipments for data acquisition. Part three contains a list of the most attractive GIS projects...

    Provided By University of Copenhagen

  • White Papers // Sep 2010

    Embedding Conditional Knowledge Bases into Question Answering Systems and Java Implementation

    A conditional schema is a graph-based structure which is able to represent conditional knowledge. The inference mechanism corresponding to the conditional schema representations was developed. In this paper, the authors propose a question answering system that can represent and process conditional knowledge using these mechanisms. In order to accomplish this...

    Provided By University of Copenhagen

  • White Papers // Mar 2011

    Java Interrogation of an Homogeneous System of Inheritance Knowledge Bases by Client-Server Technology

    The subject developed in this paper is connected by the remote interrogation of a knowledge base. The authors suppose have a collection of the same kind of knowledge bases, namely, extended inheritance knowledge bases. They use the client-server technology to query each element of such a system of knowledge bases....

    Provided By University of Copenhagen

  • White Papers // Oct 2011

    A Comparative Analysis of Enterprises Based on Size and Regions of Development

    In every country of the European Union SME (Small and Medium sized Enterprises) generates the biggest part of the turnover and offers jobs for the majority of the population. Romania does not stray from this rule: in 2009, the turnover of SME was more than 60% of the total (Hotels...

    Provided By University of Copenhagen

  • White Papers // Mar 2010

    Applications of Proc ESM in SAS 9.2

    In this paper the various facilities of Proc ESM in SAS 9.2 will be demonstrated using a dataset of 87789 registrations of the speed of passing cars on a highway near Copenhagen. Proc ESM (for Exponential Smoothing Models) was introduced in SAS version 9.2 as a procedure corresponding to more...

    Provided By University of Copenhagen

  • White Papers // Jan 2011

    Solving Demand Versions of Interprocedural Analysis Problems

    This paper concerns the solution of demand versions of interprocedural analysis problems. In a demand version of a program-analysis problem, some piece of summary information (e.g., The dataflow facts holding at a given point) is to be reported only for a single program element of interest (Or a small number...

    Provided By University of Copenhagen

  • White Papers // Jan 2009

    uFLIP: Understanding Flash IO Patterns

    Does the advent of flash devices constitute a radical change for secondary storage? How should database systems adapt to this new form of secondary storage? Before the authors can answer these questions, they need to fully understand the performance characteristics of flash devices. More specifically, they want to establish what...

    Provided By University of Copenhagen

  • White Papers // Dec 2010

    Cost Linkages Transmit Volatility Across Markets

    The authors present and test a model where increasing marginal costs channel foreign shocks to domestic sales. A positive shock in the foreign market spurs the firm to increase production and exports. This increase raises the marginal cost of production and leads exporters to substitute output from the domestic to...

    Provided By University of Copenhagen

  • White Papers // May 2010

    The Theory Of Optimal Taxation: New Developments And Policy Relevance

    The theory of optimal taxation has often been criticized for being of little practical policy relevance, due to a lack of robust theoretical results. This paper argues that recent advances in optimal tax theory has made that theory easier to apply and may help to explain some current trends in...

    Provided By University of Copenhagen

  • White Papers // Aug 2009

    Optimal Growth When Environmental Quality Is A Research Asset

    If environmental quality positively affects the productivity of labor in R&D and pollution is caused by the use of a non-renewable resource, it is socially optimal to postpone extraction and to intertemporally adjust R&D e ort. Sustained growth is feasible and optimal even though the R&D sector rests on the...

    Provided By University of Copenhagen

  • White Papers // Sep 2010

    Tax Evasion And Swiss Bank Deposits

    Bank deposits in jurisdictions with banking secrecy constitute an effective tool to evade taxes on interest income. A recent EU reform reduces the scope for this type of tax evasion by introducing a source tax on interest income earned by EU residents in Switzerland and several other jurisdictions with banking...

    Provided By University of Copenhagen

  • White Papers // Apr 2010

    Late Budgets

    The budget forms the legal basis of government spending. If a budget is not in place at the beginning of the fiscal year, planning as well as current spending are jeopardized and government shutdown may result. This paper develops a continuous-time war-of-attrition model of budgeting in a presidential style-democracy to...

    Provided By University of Copenhagen

  • White Papers // Oct 2010

    The Impact Of Fiscal Governance On Bond Markets: Evidence from Late Budgets And State Government Borrowing Costs

    Does fiscal governance affect government borrowing costs? The authors operationalize fiscal governance as the ability of governments to pass a budget on time and, using a unique data set on budget enactment dates, analyze the effect of such late budgets on government bond yield spreads. Based on a sample of...

    Provided By University of Copenhagen

  • White Papers // Jan 2010

    On the Efficiency of Fast RSA Variants in Modern Mobile Phones

    Modern mobile phones are increasingly being used for more services that require modern security mechanisms such as the public-key cryptosystem RSA. It is, however, well-known that public-key cryptography demands considerable computing resources and that RSA encryption is much faster than RSA decryption. It is consequently an interesting question if RSA...

    Provided By University of Copenhagen

  • White Papers // Oct 2010

    A Graphical Approach to Progress for Structured Communication in Web Services

    The authors investigate a graphical representation of session invocation interdependency in order to prove progress for the p-calculus with sessions under the usual session typing discipline. They show that those processes whose associated dependency graph is acyclic can be brought to reduce. They call such processes transparent processes. Additionally, they...

    Provided By University of Copenhagen

  • White Papers // Aug 2009

    Relational Parametricity for Computational Effects

    According to Strachey, a polymorphic program is parametric if it applies a uniform algorithm independently of the type instantiations at which it is applied. The notion of relational parametricity, introduced by Reynolds, is one possible mathematical formulation of this idea. Relational parametricity provides a powerful tool for establishing data abstraction...

    Provided By University of Copenhagen

  • White Papers // May 2010

    Demand Uncertainty: Exporting Delays And Exporting Failures

    This paper presents a model of trade that explains why firms wait to export and why many exporters fail. Firms face uncertain demands that are only realized after the firm enters the destination. The model retools the timing of uncertainty resolution found in productivity heterogeneity models. This retooling addresses several...

    Provided By University of Copenhagen

  • White Papers // Jan 2009

    Entrepreneurship, Job Creation, And Wage Growth

    This paper analyses the importance of entrepreneurs for job creation and wage growth. Relying on unique data that cover all establishments, firms and individuals in the Danish private sector, the authors are able to distil a number of different subsets from the total set of new establishments - subsets which...

    Provided By University of Copenhagen

  • White Papers // Aug 2009

    A Mean-variance Explanation Of FDI Flows To Developing Countries

    An important feature of the world economy is the close global and regional integration due to strong trade and investment relations among countries. The high degree of integration between countries is likely to give rise to business cycle synchronization in which case shocks will spillover from one country to another....

    Provided By University of Copenhagen

  • White Papers // Mar 2011

    Budget Consolidations In The Aftermath Of A Financial Crisis: Lessons From The Swedish Budget Consolidation 1994-1997

    The Expansionary Fiscal Contraction (EFC) hypothesis suggests that a major fiscal consolidation leads to an economic expansion. The authors test this hypothesis, and the implied non - linear responses of the economy to large and small changes in fiscal policy using data from the Swedish budget consolidation 1994-1997 that was...

    Provided By University of Copenhagen

  • White Papers // Jan 2011

    Financial Instability, Credit Cycles And Monetary Policy

    There seems to be a general consensus among macroeconomists and central bankers that the global financial crisis of 2007-2009 to a large extent was driven by credit growth. The same goes for earlier financial crises, e.g. as shown by Reinhart and Rogoff (2009). In his opening address at the ECB...

    Provided By University of Copenhagen

  • White Papers // Jul 2009

    Mote-Based Online Anomaly Detection Using Echo State Networks

    Sensor networks deployed for scientific data acquisition must inspect measurements for faults and events of interest. Doing so is crucial to ensure the relevance and correctness of the collected data. In this paper the authors unify fault and event detection under a general anomaly detection framework. They use machine learning...

    Provided By University of Copenhagen

  • White Papers // Nov 2008

    Determinacy, Stock Market Dynamics And Monetary Policy Inertia

    This paper deals with the stability properties of an economy where the central bank is concerned with stock market developments. The authors introduce a Taylor rule reacting to stock price growth rates along with inflation and output gap in a New-Keynesian setup. They explore the performance of this rule from...

    Provided By University of Copenhagen

  • White Papers // May 2010

    Fiscal Transparency And Procyclical Fiscal Policy

    This paper examines why fiscal policy is procyclical in developing as well as developed countries. The authors introduce the concept of fiscal transparency into a model of retrospective voting, in which a political agency problem between voters and politicians generates a procyclical bias in government spending. The introduction of fiscal...

    Provided By University of Copenhagen

  • White Papers // Feb 2013

    Cooperative e-Learning Approach Based on Cloud Computing

    E-learning refers to the support of modern communications and computer-based applications for two fundamental human-development processes, learning and teaching. In the authors' paper, they want to emphasize the benefits of e-learning within Small and Medium Enterprises (SMEs) from the novel context of cloud computing. This paper proposes a cooperative approach...

    Provided By University of Copenhagen

  • White Papers // Dec 2011

    A PKI Case Study on the Issues of the Personal Security Profile for Web and Mail Agents

    In this paper, the authors detail the actual problems encountered while using digital certificates with actual web browsers and mail user agents. After setting up a public-key infrastructure for the community of users within the University of Craiova, they have begun testing the issued digital certificates on different usage scenarios....

    Provided By University of Copenhagen