For my final project in Computer Science 175: Intro to Graphics, I created a maze game with a buddy of mine. Click here for the project website – you can check out screen shots and even download the source if you’re interested!
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This paper was written for Economics 1339: Generating Wealth of Nations, a Harvard undergraduate course taught by visiting professor Jeffrey Borland.
Introduction
The convergence hypothesis at its most fundamental level posits that countries with lower productivity will tend to grow at faster rates than their more productive neighbors. This theory follows directly from the law of diminishing returns, which explains that the marginal output of a production factor progressively decreases as the factor is increased. Following this logic, a less productive country can exploit the same techniques utilized in more productive countries to achieve a greater output for any given level of input. While theoretically sound, the convergence hypothesis relies upon one key assumption that is not brought to bear in the real world – either no other determinants of productivity growth exist, or countries with varying productivities are equal in all other aspects. Empirical evidence runs contrary to both possibilities. For example, in the period from 1870 to 1913, America continued to increase its already well-established lead in productivity, while the average productivity level of laggard countries in Europe fell. Following the Second World War, however, Europe’s rapid growth and convergence with the United States seems to validate the hypothesis. These discrepancies imply the existence of other important determinants of growth. This paper seeks to examine the mechanisms by which convergence occurs to uncover the characteristics that explain why some laggard countries experience accelerated growth rates, why others with high productivity remain leaders, and why still others fail to ever catch up.
I recently had to export a database with over 50MM rows, and while I love using PHPMyAdmin for most database operations, the tool’s export functionality tends to crap out on larger data sets. This article outlines how to export a large MySQL database (with compression to save space!).
Changes to my php.ini file kept getting overwritten, until I found where the real file was being loaded from! Here’s how to update php.ini for MAMP PRO.
If you’re SSH’d into a MySQL server and want to export MySQL query results to CSV (readable by Excel), simply add the below snippet to the end of your query.
INTO OUTFILE '/tmp/results.csv' FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n'
Note that ‘/tmp/results.csv’ in the code above should correspond to a writeable destination, and the file can’t already exist.
