Blog Archives

RTutor: Poverty Reduction and Deforestation

December 12, 2016
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RTutor: Poverty Reduction and Deforestation

The environmental Kuznets curve hypothesizes an inverted u-shape relationship between income and environmental degradation: while richer countries tend to invest more ressources into environmental protection as their income rises, income growth in poor...

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RTutor: CO2 Trading and Risk of Firm Relocation

November 3, 2016
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RTutor: CO2 Trading and Risk of Firm Relocation

Many economists would agree that the most efficient way to fight global warming would be a world-wide tax or an emmission trading system for greenhouse gases. Yet, if only a part of the world implements such a scheme, a reasonable concern is that firms...

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RTutor: The effect of air pollution on house prices

October 11, 2016
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RTutor: The effect of air pollution on house prices

A key question of environmental economics is to economically quantify damages from different types of pollution and benefits from environmental policy that attempts to reduce pollution. Often only indirect measures are available. An important measure i...

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RTutor: Free Trade Agreements

RTutor: Free Trade Agreements

There is quite some sceptisim towards TTIP, the currently negotiated free trade agreement between Europe and the USA. Even in an exporting nation like Germany, there are substantial worries about reduction in consumer protection standards, or fear of limits to democracy if cooperations can sue states in international settlement courts. On the other hand, most economists tend to be...

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RTutor: Technological Progress and Fuel Economy of Cars

April 15, 2016
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RTutor: Technological Progress and Fuel Economy of Cars

Christopher Knittel estimates in his article Automobiles on Steroids: Product Attribute Trade-Offs and Technological Progress in the Automobile Sector (American Economic Review, 2011) the technological progress that has occurred since 1980 in the aut...

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RTutor: Public Procurement Auctions: Design, Outcomes and Adaption Costs

December 18, 2015
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RTutor: Public Procurement Auctions: Design, Outcomes and Adaption Costs

As an economist, I consider public procurement of construction projects a very interesting topic. While several firms may initially bid for a project and propose prices, the news in Germany are regulary filled with construction projects whose costs went far beyond those that were initially agreed upon. For example, Wikipedia states that when the city of Hamburg initially signed...

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RTutor: How Soap Operas Reduced Fertility in Brazil

August 21, 2015
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RTutor: How Soap Operas Reduced Fertility in Brazil

What is the real world impact of tv series? Did Brazilian women get fewer children because they watched soap operas that portray happy, rich families that have few children? Clara Ulmer has written a very nice RTutor problem set that allows you interactively explore this question in R. It is based on the paper Soap Operas and Fertility: Evidence...

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RTutor: Credit Booms Gone Bust

RTutor: Credit Booms Gone Bust

RTutor: Credit Booms Gone Bust 2015-07-09 12:00:00 Currently, quite a few students here at Ulm University create RTutor problem sets based on economic articles as part of their Bachelor or Master thesis. RTutor is an R package that allows to develop interactive R problem sets, that can be solved in a browser based or markdown based environment. Thomas Clausing has written a very...

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RTutor Kicks Off: An Interactive R Problem Set about Top Income Taxation

February 16, 2015
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RTutor Kicks Off: An Interactive R Problem Set about Top Income Taxation

RTutor is a new R package that allows to develop interactive R exercises. Problem sets can be solved off-line or can be hosted online via shiny server. Try out an Interactive Problem Set about Optimal Taxation of Top Labor Incomes Jonas Send has written a very nice interactive R problem set that allows you to explore the key insights of the...

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Debugging with restore points instead of break points

February 15, 2015
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Debugging with restore points instead of break points

break points and restore points The standard method to debug an R function is to set break points via the browser function. When during execution of the function, browser() is called, the R console immediately changes into an interactive debugging mode that allows to step through the code and enter any R expressions. Thanks to RStudio's visual debugging support, this...

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