Narrow search
Showing 1 - 10 of 823
Cover Image
Investment in Fixed Broadband Networks and Access Regulation in Developed and Developing countries: Panel Data Applications
Ben Dkhil, Inès - Volkswirtschaftliche Fakultät, … - 2014
errors, we show that the relationship between regulation and broadband investment is an inverted U shape in developed world … developing countries, the regulation has a strict negative impact on broadband deployment. …
Persistent link: https://www.econbiz.de/10011110260
Cover Image
The Multiple Discrete-Continuous Extreme Value Model (MDCEV) with fixed costs
Tanner, Reto; Bolduc, Denis - Volkswirtschaftliche Fakultät, … - 2012
In this paper, we present a model that can be viewed as an extension of the traditional Tobit model. As opposed to that specific model, ours also accounts for the the fixed costs of car ownership. That extension is needed since being carless is an option for many households in societies that...
Persistent link: https://www.econbiz.de/10011260957
Cover Image
Knock-on effect of non-manufacturing regulation on manufacturing sectors efficiency and productivity
Fioramanti, Marco - Volkswirtschaftliche Fakultät, … - 2011
also improving European competitiveness. Regulation is one of the main factors influencing competitiveness. This paper … countries from 1975 to 2007. Using the Stochastic Frontier Approach applied to the EU-KLEMS and OECD’s Regulation Impact … Indicator database I found that, given the strong negative relationship between regulation and Technical Efficiency, which is …
Persistent link: https://www.econbiz.de/10009226952
Cover Image
Interpreting interaction terms in linear and non-linear models: A cautionary tale
Drichoutis, Andreas - Volkswirtschaftliche Fakultät, … - 2011
Interaction terms are often misinterpreted in the empirical economics literature by assuming that the coefficient of interest represents unconditional marginal changes. I present the correct way to estimate conditional marginal changes in a series of non-linear models including (ordered)...
Persistent link: https://www.econbiz.de/10009294598
Cover Image
The Internationalization of Inventive Activity: A Gravity Model Using Patent Data
Picci, Lucio - Volkswirtschaftliche Fakultät, … - 2009
This paper discusses the extent and the determinants of the internationalization of European inventive activity, between 1990 and 2005, using an innovative method to treat the information contained in the European Patent Office's Patstat database. We introduce a new set of indicators measuring...
Persistent link: https://www.econbiz.de/10008527380
Cover Image
Nyquist Frequency in Sequentially Sampled Data
Faghih, Nezameddin; Faghih, Ali - Volkswirtschaftliche Fakultät, … - 2008
This paper studies the sequential sampling scheme as a solution to the problem of aliasing, where the sampling interval is restricted to a minimum allowable value. Sequential sampling is analyzed and it is proved that when the sampling ratio is an integral number, the associated spectral...
Persistent link: https://www.econbiz.de/10005619887
Cover Image
The Internationalization of Inventive Activity: A Gravity Model Using Patent Data
Picci, Lucio - Volkswirtschaftliche Fakultät, … - 2008
This paper discusses the extent and the determinants of the internationalization of European inventive activity, between 1990 and 2004, using an innovative method to treat the information contained in the European Patent Office's Patstat database. The observed level of internationalization of...
Persistent link: https://www.econbiz.de/10005621297
Cover Image
A Poisson Stochastic Frontier Model with Finite Mixture Structure
Drivas, Kyriakos; Economidou, Claire; Tsionas, Efthymios G. - Volkswirtschaftliche Fakultät, … - 2014
Standard stochastic frontier models estimate log-linear specifications of production technology, represented mostly by production, cost, profit, revenue, and distance frontiers. We develop a methodology for stochastic frontier models of count data allowing for technological and inefficiency...
Persistent link: https://www.econbiz.de/10011107340
Cover Image
Efficient estimation of Markov regime-switching models: An application to electricity wholesale market prices
Weron, Rafal; Janczura, Joanna - Volkswirtschaftliche Fakultät, … - 2010
In this paper we discuss the calibration issues of models built on mean-reverting processes combined with Markov switching. Due to the unobservable switching mechanism, estimation of Markov regime-switching (MRS) models requires inferring not only the model parameters but also the state process...
Persistent link: https://www.econbiz.de/10008694003
Cover Image
Outlier Treatment and Robust Approaches for Modeling Electricity Spot Prices
Trueck, Stefan; Weron, Rafal; Wolff, Rodney - Volkswirtschaftliche Fakultät, … - 2007
We investigate the effects of outlier treatment on the estimation of the seasonal component and stochastic models in electricity markets. Typically, electricity spot prices exhibit features like seasonality, mean-reverting behavior, extreme volatility and the occurrence of jumps and spikes....
Persistent link: https://www.econbiz.de/10005837221