How to Read an Excel File dircetly form the Web in Julia Language?

In a former blog post (see here) I described how to read an Excel file into Julia. In this post I will focus on how to import an Excel file directly from the Web. This feature might be especially useful for recurring routines that rely on the most up-to-date data. Continue reading

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Create Venn-Diagram in R

A Venn diagram (also sometimes also called primary diagram or set diagram) is a diagram that depicts all possible logical relations between a collection of sets. Certain subjects, such as omitted variable bias, can be best be explained by using a Venn diagram. This post shows how to construct a Venn diagram in R.

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How to Read an Excel File in Julia Language? An example.

This article shortly describes how to read an Excel file into Julia. Generally, one can use different libraries to read Excel files, including XLSXReaderExcelReaders or Taro. In this tutorial I will focus on Taro as it created the fewest problems and provides – at least in my eyes – an easy to understand syntax.
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Tobin’s q-Investment Theory

In the 60s and 70s, economists including Nicholas Kaldor and James Tobin came up with an alternative investment theory: the q-investment theory, sometimes also referred to as Tobin’s q-investment theory. At its core, Tobin’s q theory of investment relates fluctuations in investment to changes in the stock market. Although the theory gained popularity only in the 70s, first elements of the theory can already be found in works of John Maynard Keynes. In his General theory of employment, interest and money, Keynes mentioned already that investment might be linked to the stock market.

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Posted in Macroeconomics | Tagged , , | 1 Comment

The Neoclassical Theory of Investment

Dale W. Jorgenson contributed to the development and understanding on the neoclassical investment theory. In the following post I will try to outline and discuss the neoclassical investment theory in simply words. At its heart, Jorgenson’s investment model bases on the idea that there exists an optimal capital stock.  Economic actors, such as firms, invest and disinvest in order to reach the optimal capital stock. Continue reading

Posted in Macroeconomics | 1 Comment

WordAds: Minimum Traffic Requirements

When having a blog hosted at, there come a time when all bloggers will ask themselves the same question: What is the minimum traffic requirement for WordAds?

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General Principles for Specifying a Dynamic General Equilibrium Model

The Dynamic General Equilibrium Model (DGE) is characterized by various features. Firstly, a DGE is dynamic, which means that it considers an economy over time. Second, it considers a general economy, which implies that the modelled economy is fully specified. Lastly, the model relies on an equilibrium concept. Continue reading

Posted in Macroeconomics | Tagged , , | 2 Comments