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Optimization Over Graphs
Kwon, Suehyun - 2019
This paper defines isomorphism for network formation that is not mathematically isomorphic. Once the pattern of network formation is characterized, one can test for (i) location fixed effects, (ii) heterogeneity, (iii) private information allowing for long-term contracts. The paper provides...
Persistent link: https://www.econbiz.de/10012892085
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Small Group Instruction to Improve Student Performance in Mathematics in Early Grades : Results from a Randomized Field Experiment
Bonesrønning, Hans; Finseraas, Henning; Hardoy, Inés; … - 2021
years. The intervention includes students aged 7-9 and consists of pulling students from their regular mathematics classes … into small, homogenous groups for mathematics instruction for 3 to 4 hours per week, for two periods of 4-6 weeks per … their performance in mathematics by .16 standard deviations at the end of the school year and by .06 standard deviations in …
Persistent link: https://www.econbiz.de/10013312078
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Optimally Controlling an Epidemic
Gonzalez-Eiras, Martín; Niepelt, Dirk - 2021
We propose a flexible model of infectious dynamics with a single endogenous state variable and economic choices. We characterize equilibrium, optimal outcomes, static and dynamic externalities, and prove the following: (i) A lockdown generically is followed by policies to stimulate activity....
Persistent link: https://www.econbiz.de/10013314771
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On the long-run evolution of technological knowledge
Hakenes, Hendrik; Irmen, Andreas - 2005
This paper revisits the debate about the appropriate differential equation that governs the evolution of knowledge in models of endogenous growth. We argue that the assessment of the appropriateness of an equation of motion should not only be based on its implications for the future, but that it...
Persistent link: https://www.econbiz.de/10010261287
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"Ito's Lemma" and the Bellman equation for poisson processes : an applied view
Sennewald, Ken; Wälde, Klaus - 2006
Using the Hamilton-Jacobi-Bellman equation, we derive both a Keynes-Ramsey rule and a closed form solution for an optimal consumption-investment problem with labor income. The utility function is unbounded and uncertainty stems from a Poisson process. Our results can be derived because of the...
Persistent link: https://www.econbiz.de/10010261427
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Using chebyshev polynomials to approximate partial differential equations
Caporale, Guglielmo Maria; Cerrato, Mario - 2008
This paper suggests a simple method based on a Chebyshev approximation at Chebyshev nodes to approximate partial differential equations. It consists in determining the value function by using a set of nodes and basis functions. We provide two examples: pricing a European option and determining...
Persistent link: https://www.econbiz.de/10010264366
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Generalized quadratic revenue functions
Chambers, Robert G.; Färe, Rolf; Grosskopf, Shawna - 2008
In this paper we focus on specification of revenue functions in their dual price space. We consider two distance functions, both dual to the revenue function: Shephard output distance function and the directional output distance function, both in price space. The former is multiplicative,...
Persistent link: https://www.econbiz.de/10010264442
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Production technologies in stochastic continuous time models
Wälde, Klaus - 2009
qualitative analysis. Very precise and intuition-building results are obtained by working with models which provide closed …
Persistent link: https://www.econbiz.de/10010277094
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Kalòs kai agathòs? Government quality and cultural heritage in the regions of Europe
Bertacchini, Enrico; Revelli, Federico - 2019
This paper uses panel data on over 200 regions of Europe to study the spatial distribution of UNESCO sites and the capacity of regional governments to conserve heritage, using new designations in the World Heritage List as a proxy. We test whether the location of a region matters by controlling...
Persistent link: https://www.econbiz.de/10012018309
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Trade in Times of Uncertainty
Matzner, Anna; Meyer, Birgit; Oberhofer, Harald - 2023
This paper analyses the direct and indirect trade volume and trade cost effects of uncertainty on international trade and economic welfare using a structural gravity framework for a panel of 97 developed and developing countries from 2000 to 2018. Our results suggest that an increase in...
Persistent link: https://www.econbiz.de/10014290194