pbberlin.github.io

Projects 2020

Drag’n Drop for smartphones

• Drag and drop on IPhones, Android phones and desktop web browsers

• Using HTML + Javascript: Demo

• Same functionality meanwhile available via Apache E-Charts

Price of beauty in real estate

• Pricing real estate beauty via smartphone app

• Cooperation between ZEW and Cambridge Real Estate Lab
  founded by Doctor Thies Lindenthal

• Social media login via Google Sign-In

• AWS backend with PostgreSQL

• Apache, mod_wsgi

• Python Flask, SQLAlchemy -
  expandable by researchers

• Try it online

Setting up a gitserver at ZEW institute

• Using open source gitea - similar to github.com

• LDAP login removes most of the tedious administration.
  Thanks to Andreas for setting up the AD access rights.

• Conversion of 20 GB SVN repository
  required 16 GB of RAM for Pearl helper structures.

Retirement saving as smartphone app

• A prototype => it’s ugly

• Smartphone simulation - again using drag and drop

• Long term savings in stocks and bonds

• Payout based on Monte Carlo simulation of historical returns

• Auto scaling via Google app engine

• Design by software engineer

Keyboard shortcuts

• For Windows, Webbrowser and Total Commander

• PDF (in German)

otree for researchers

• For several years I worked on a setup of otree
  so that our researchers can do experiments in self-service.

• My latest setup guide, using tmux instead of screen

• User guide explaining WinSCP and Total Commander SFTP plugin.

• There are still networking issues with Firefox, which do not occur with Chrome clients

• Python as server is awkward to use

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