Didaktics of media: Learning Communities

This blog post is one part of the series “learning diary” for a course at my university. Goals: Based on the pdf which was provided I assume we will learn something about communities of learners. In the pdf it’s stated that the oldest definition for a university is “a community of learners and teachers”. So I assume we will learn more about the University as a community of teachers and learners.

Elixir, Windows and Chocolatey: Updates

Recently I ran in a problem with Elixir on Windows, installed via Chocolatey: After an update of the Elixir package: choco upgrade elixir (or a Windows update or something similar) I couldn’t use iex.bat anymore. Every time I tried to open iex.bat I got an crash_dump: {error_logger,{{2015,12,3},{22,35,15}},crash_report,[[{initial_call,{supervisor_bridge,user_sup,['Argument__1']}},{pid,<0.22.0>},{registered_name,[]},{error_info,... (That said, mix still worked…) After several attempts on reinstalling Elixir (and Erlang, just to be sure) I found this comment on the Elixir package on Chocolatey.

Didaktics of media: Report on the Online Educa Berlin (OEB) #OEB15

Today I attended the exhibition of the OEB in Berlin at the Intercontinental Hotel. I only visited the exhibition, which was free because the fee for the conference it self would have been to much to bear (roughly 480€). I visited some of exhibitors and will here summarize my experience. ITNedu The company is a young startup based in London, specializing in providing access to video content for educational purposes.

Didaktics of media: Mediated Discourse: Chats, Foren, Wikis, Twitter, Audio and Video

This blog post is one part of the series “learning diary” for a course at my university. Goals: Based on the title and the provided links for that unit I assume we will learn something about the discourse in chats, forums and co. The links provided were about the Minerva Project (an online university) and an article as response to the first link (so, pro and con about the Minerva project).

Didaktics of media: Evaluation of Instruction and On-line Exercise Design

This blog post is one part of the series “learning diary” for a course at my university. Goals: Based on the title and the provided pdf for that unit I assume we will learn how to evaluate and compare different examination methods for different kinds of learning goals. I think we will consider target groups, the goal of the examination and several other aspects of online examination. In the end I hope I’ll be able to create my own online examination because we need to create multiple choice tests later on.

Phoenix and Windows: js not executed

I’m currently on my way to learn a little bit of Elixir. I like the idea of functional programming language made easy. For starters I’m doing all the tutorials I can find. My most recent tutorial was the Channels Tutorial of the Phoenix Framework. As I did the tutorial, I encountered a problem: My socket.js file was concatenated in the app.js file via Brunch.io but the promised message “Joined successfully” did not show up in the console.

Didaktics of media: Didaktical-methodological Design

This blog post is one part of the series “learning diary” for a course at my university. Goals: Besides the headline “Didaktical-methodological Design” an additional hint to a book was provided “Schulmeister, Ralf, Hypermedia Learning Systems”. Because of that I investigated a little bit about hyper media learning systems. For example what hyper media learning system means… Turns out, hyper media is a word creation from hypertext and media. It describes systems where media content is linked to to other media content (in contrast to hypertext, where foot notes, citations and text is linked together).

Didaktics of media: Learning unit one - Report

This blog post is one part of the series “learning diary” for a course at my university. Goal of this report is to take and rate a online learning unit. For the first learning unit we should take either a text based or animation based course. I finished two kata on the platform http://codewars.com. Short synopsis of the unit: The learning unit C# “Descending order” is a coding kata on the site http://codewars.

Python, pandas and json_read with utf-8 encoding

The pandas library is a fantastic python toolkit to work with data. Recently I needed to read some json files in a pandas dataframe. Usually you can do that easily with the built in method: import pandas as pd pd.read_json('example.json') But this method fails, if it encounters utf-8 encoded files. In contrast to the more often used methods _read_table_ and _read_csv_, _read_json_ does not provide an _encoding_ parameter. To work around this you have to import the codecs module and use the _open_ method: