500,- € Gaming PC von Amazon

CPU: Pentium G4560 – 57,48 €
http://amzn.to/2tWWwBA

Motherboard: MSI H110M Pro-D – 52,99 €
http://amzn.to/2t2zixU

RAM: Crucial 8GB DDR4 2133 (CT8G4DFD8213) – 58,19 €
http://amzn.to/2tBKlLb

SSD: SanDisk SSD PLUS 240GB Sata III 2,5 Zoll Interne SSD – 73,31 €
http://amzn.to/2sCBkDb

Grafikkarte: ZOTAC GeForce GTX 1050 Ti Mini – 138,99 €
http://amzn.to/2t2Bc1m

DVD-RW: ASUS DRW-24D5MT – 17,99
http://amzn.to/2sYUX9i

Gehäuse: Sharkoon MA-A1000 – 33,99 €
http://amzn.to/2tC5aq1

Netzteil: Sharkoon WPM400 Bronze – 54,98 €
http://amzn.to/2s3qfI4

Gesamt: 487,92 €

Experiment “dots” (en)

zur deutsche Version

Aim

The Institute of Visual Computing at the Bonn-Rhein-Sieg University of Applied Sciences investigates collaborative work on large, high-resolution displays. Gained knowledge should aid researchers and developers to build better Groupware for large, high-resolution displays.

Description

Two participants are collaborating on a large, high-resolution display. Interaction with the display takes place by means of smartphones. Each participant holds one in his/her hands. On the display multiple folders are visualized. The participants have to open each folder and solve the contained task (answer the contained question, all questions are in english). Each time the participant solves a task, the folder symbol becomes replaced by a file symbol with a number. After all tasks have been solved, the participants have to connect the file symbols with respect to the numbers on them. The performace of each team will be measured using different parameters like speed, number of correct answers etc. 

Dureing the experiment the 3d position of each particpant has to be acquired and recorded. Thus, each participant has to wear a bicycle helmet with reflective markers.

Each experiment will last for max. 90 minutes depending on the team performance. The briefing and debriefing will take additional 30 minutes.

Risks

The applied methods should not cause any health problems or impairments. However, you will be free to reject participation in experiment, if you have any concerns this regarding. In this case the experiment will not take place. You are also free to quit the experiment at any time. 

Reward

Each participant will receive 15 euros at the end of the experiment. In case you are studying Economic Psychology, the you will get additionally 2 test hours credited. Moreover, at the end of the project we will raffle a 40 euros Amazon gift voucher off among all teams.

Privacy Policy

All data gained during this project will be handled confidentially within the limits of statutory regulations. Data will be kept for at least the duration of the project and will be stored securely. In cases of video and/or audio recordings the participants will be notified before hand and asked for permission. Your data will be anonymised and will be used only for calculation of statistics. We will not share your data with a third person. 

Registration

For each registration two participants are needed. To register yourself for the experiment please use the online form: http://experiment.sigitov.net

Experiment “dots” (de)

switch to the english version

Ziel

Das Institut für Visual Computing an der Hochschule Bonn-Rhein-Sieg erforscht kooperative Arbeit vor einem großen, hochauflösenden Display. Die gewonnenen Erkenntnisse sollen Forschern und Entwicklern dabei helfen, bessere Groupware für große, hochauflösende Displays zu entwickeln.

Beschreibung

Zwei Teammitglieder arbeiten vor einem großen, hochauflösenden Display. Die Interaktion mit dem Display erfolgt mittels Smartphones. Jedes Mitglied hält eins in den Händen. Auf dem Display sind mehrere Ordner dargestellt. Die Teammitglieder sollen jeden Ordner öffnen und darin enthaltene Aufgabe lösen (die Aufgaben sind in englische Sprache). Nachdem eine Aufgabe gelöst ist, wird das dazugehörige Ordner-Symbol durch ein File-Symbol mit einer Nummer ersetzt.  Nachdem alle Aufgaben gelöst sind, sollen die File-Symbolen mit einander anhand deren Nummern verbunden werden. Die Performanz eines Teams wird anhand mehreren Parametern wie z.B. Geschwindigkeit, Anzahl der korrekten Antworten etc. Das beste Team erhält am Ende des Projekts eine zusätzliche Belohnung.

Während des Experiments soll die Position der Teammitglieder vor dem Display erfasst und aufgezeichnet werden. Dafür sollen die Fahrradhelme getragen werden.

Das Experiment selbst dauert max. eine Stunde, abhängig von der Leistung des Teams. Für die Briefing und Debriefing werden noch ca. 30 bis 40 Minuten benötigt.

Risiken

Die verwendeten Methoden führen generell zu keinen gesundheitlichen Schäden oder Beeinträchtigungen. Sollten Sie aufgrund der beschriebenen Experiment-Szenario Bedenken haben, so wird die Untersuchung nicht durchgeführt. Sie können auch die Untersuchung jederzeit abbrechen ohne dass Ihnen dadurch ein Nachteil entsteht.

Belohnung

Jeder Teilnehmer / jede Teilnehmerin bekommt 15-Euro in Bar ausgezahlt. Falls Sie Wirtschaftspsychologie studieren, erhalten Sie zusätzlich für die Teilnahme zwei Versuchspersonenstunden gutgeschrieben. Außerdem werden wir einen 40-Euro Gutschein zwischen allen Teams am Ende des Projekts verlösen.

Datennutzung

Alle Informationen, die in dieser Studie gewonnen werden, werden im gesetzlichen Rahmen vertraulich behandelt. Die Daten werden mindestens für die Dauer des Projekts aufbewahrt und an sicheren Orten, wie verschlossenen Räumen aufbewahrt und / oder auf passwortgeschützten Datenträger gespeichert. In Fällen, in denen Audio- / Videoaufzeichnungen verwendet werden sollen, erfolgt dies nur mit Zustimmung der Teilnehmer. Ihre Daten werden anonymisiert und werden nur für die Erstellung von Statistiken verwendet. Ihre Daten werden nicht an Dritte weitergegeben.

Anmeldung

Für eine Anmeldung sind jeweils 2 Teilnehmer benötigt. Um sich anzumelden nutzen Sie bitte das Online-Formular unter dem Link: http://experiment.sigitov.net

How to add MySQL capabilities to a Unity application

In this short tutorial I’m going to explain how you can add MySQL capabilities to your Unity application. This will allow you to connect to a MySQL database from your application and fill the database with some data (e.g. users’ scores). To do so, you first of all need to obtain a MySQL Connector. Not every version of the Connector, however, will work with Unity. To obtain the Connector do the followiung steps:

  1. Go to https://dev.mysql.com/downloads/connector/net/
  2. Click on the “Looking for previous GA?” link.
  3. Select Version: 6.7.9 (This is the last version that contains the library compiled with the .Net 2.0 Framework)
  4. Select Platform: .Net & Mono
  5. Click on the “Download” button.
  6. Extract the files to a directory of your choice.

Next we will create a new database schema with a table that can store string values. You can do this using MySQL Workbench.

  1. Open MySQL Workbench
  2. Connect to the local database.
  3. Create a new schema in the connected server and call it unity.
  4. Set unity schema as default schema by clicking on it with the right mouse button and selecting “Set as Default Schema”.
  5. Create a new table in the unity schema, call it scores, and define 3 columns: idscores as INT, playername as VARCHAR(45), and playscore as INT.
  6. Set the following flags for the idscores column: Primary Key, Not Null, and Auto Increment.
  7. Set the following flag for the columns playername and playerscore: Not Null.

Now we need a new user who will have privileges to write in and read from the unity schema.

  1. Click in the navigator panel of the MySQL Workbench on the User and Priveleges link.
  2. Click on the button “Add Account”.
  3. Define a username of your choice.
  4. Leave Authentification Type as Standard (I had a problem to connect to the DB from a Linux machine while using other Authentification Type)
  5. Leave Limit to Hosts Matching as %. This will allow you to connect from any machine.
  6. Define a password of your choice.
  7. Leave Account Limits and Administrative Roles settings unchanged.
  8. On the Schema Privileges panel click on the button “Add Entry…”.
  9. Activate the option “Selected schema”, select the unity schema, and click on “Ok”.
  10. Next provides the object rights: SELECT and INSERT for the entry and click on “Apply”.

Finally, we will write a small Unity application that will connect to a MySQL database and write a test string into a table.

  1. Create a new Unity project
  2. Drag-and-Drop the MySQL.Data.dll file into the Assets folder (You are interested in the library that lies in the v2.0 directory)
  3. You have also copy the System.Data.dll file into the Assets folder. If you work on Windows, then you can find the file in: C:\Program Files\Unity\Editor\Data\Mono\lib\mono\2.0
  4. Next create a new C# script and put the following code into it:

 

 
using UnityEngine; 
using MySql.Data.MySqlClient; 

  public class testSQL : MonoBehaviour { 
    MySqlConnection connection; 

    // Use this for initialization 
    void Start () { 
      SetupSQLConnection(); 
      TestDB(); 
      CloseSQLConnection(); 
    } 

    private void SetupSQLConnection() { 
      if (connection == null) { 
        string connectionString = "SERVER=xxx.xxx.xxx.xxx;" + "DATABASE=unity;" + "UID=unityuser;" + "PASSWORD=yourpassword;"; 
        try { 
          connection = new MySqlConnection(connectionString); 
          connection.Open(); 
        } catch (MySqlException ex) { 
          Debug.LogError("MySQL Error: " + ex.ToString()); 
        } 
      } 
    } 

    private void CloseSQLConnection() { 
      if (connection != null) { 
        connection.Close(); 
      } 
    } 

    public void TestDB() { 
      string commandText = string.Format("INSERT INTO scores (playername, playerscore) VALUES ({0}, {1})", "'megaplayer'", 10); 
      if (connection != null) { 
        MySqlCommand command = connection.CreateCommand(); 
        command.CommandText = commandText; 
        try { 
          command.ExecuteNonQuery(); 
        } catch (System.Exception ex) { 
          Debug.LogError("MySQL error: " + ex.ToString()); 
        } 
      } 
     } 
   } 

Add an empty GameObject to your scene and put the script on it. Now each time you start the game a new entry will be added to your database. You can check it in the MySQL Workbench by clicking with the right mouse button on the table, selecting “Select Rows – Limit 1000”, and clicking in the appeared window on the lightning symbol.

Using MPlayer to Play a Video on a Wall Display

Given:

  • a wall display made of 35 displays
  • 3 display PCs (each PC drives up to 12 displays)
  • each display is configured as a separated X-Screen
  • each display PC is able to connect to another display PC over ssh without a password

Requirements:

  • mplayer
  • socat
  • ssh

Approach:

MPlayer synchronizes master and slave instances by sending UDP packages with a frame number to the port 23867. Thus, we have to configure port forwarding on each  display PC to be able to run multiple slave instances on a single PC. We use socat to achieve that.

$ socat -u UDP4-RECVFROM:23867,fork - | 
tee >(socat -u - UDP4-SENDTO:192.168.1.XXX:24800) 
>(socat -u - UDP4-SENDTO:192.168.1.XXX:24801) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24802) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24803) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24804) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24805) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24806) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24807) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24808) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24809) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24810) 
>(socat -u - uDP4-SENDTO:192.168.1.XXX:24811) 
> /dev/null

Next we start mplayer slaves on each display PC.

$ mplayer -display :0.6 -vf crop=384:204:0:204 -noborder -geometry 1920x1080 -udp-slave -udp-port 24800 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &
$ mplayer -display :0.7 -vf crop=384:204:0:408 -noborder -geometry 1920x1080 -udp-slave -udp-port 24801 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &
$ mplayer -display :0.9 -vf crop=384:204:0:612 -noborder -geometry 1920x1080 -udp-slave -udp-port 24802 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &
$ mplayer -display :0.10 -vf crop=384:204:384:612 -noborder -geometry 1920x1080 -udp-slave -udp-port 24803 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &
$ mplayer -display :0.11 -vf crop=384:204:768:612 -noborder -geometry 1920x1080 -udp-slave -udp-port 24804 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &

We can use ssh to start mplayer slaves remotely on display PCs

$ ssh 10.20.152.32 'mplayer -display :0.4 -vf crop=384:204:384:0 -noborder -geometry 1920x1080 -udp-slave -udp-port 24800 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.32 'mplayer -display :0.1 -vf crop=384:204:768:0 -noborder -geometry 1920x1080 -udp-slave -udp-port 24801 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.32 'mplayer -display :0.9 -vf crop=384:204:1152:0 -noborder -geometry 1920x1080 -udp-slave -udp-port 24802 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.32 'mplayer -display :0.5 -vf crop=384:204:384:204 -noborder -geometry 1920x1080 -udp-slave -udp-port 24803 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.32 'mplayer -display :0.3 -vf crop=384:204:768:204 -noborder -geometry 1920x1080 -udp-slave -udp-port 24804 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.32 'mplayer -display :0.10 -vf crop=384:204:1152:204 -noborder -geometry 1920x1080 -udp-slave -udp-port 24805 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.32 'mplayer -display :0.6 -vf crop=384:204:384:408 -noborder -geometry 1920x1080 -udp-slave -udp-port 24806 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.32 'mplayer -display :0.8 -vf crop=384:204:768:408 -noborder -geometry 1920x1080 -udp-slave -udp-port 24807 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.32 'mplayer -display :0.11 -vf crop=384:204:1152:408 -noborder -geometry 1920x1080 -udp-slave -udp-port 24808 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.33 'mplayer -display :0.5 -vf crop=384:204:1536:0 -noborder -geometry 1920x1080 -udp-slave -udp-port 24800 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.33 'mplayer -display :0.6 -vf crop=384:204:1536:204 -noborder -geometry 1920x1080 -udp-slave -udp-port 24801 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.33 'mplayer -display :0.7 -vf crop=384:204:1536:408 -noborder -geometry 1920x1080 -udp-slave -udp-port 24802 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.33 'mplayer -display :0.9 -vf crop=384:204:1536:612 -noborder -geometry 1920x1080 -udp-slave -udp-port 24803 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'
$ ssh 10.20.152.33 'mplayer -display :0.10 -vf crop=384:204:1152:612 -noborder -geometry 1920x1080 -udp-slave -udp-port 24804 c01-global-home/video/Sintel.2010.1080p.mkv /dev/null 2>&1 &'

Of course, we can wrap all these commands in a single bash script.

Next, we start mplayer master instance.

$ mplayer -display :0.5 -vf crop=384:204:0:0 -noborder -geometry 1920x1080 -udp-master -udp-ip 192.168.1.255 -udp-port 23867 c01-global-home/video/Sintel.2010.1080p.mkv

Experiment: Concentration / Peripheral Vision – pilot study (closed)

We are looking for volunteers to take part in our experiment. In the study we try to find out if dynamic visual events in peripheral vision have any impact on users’ concentration/attention. If you are interested in participating, please contact me per email or use the form below to provide information on what date and time you are able to come by Experiment duration: 25-30 minutes Location: University of Applied Sciences Bonn-Rhein-Sieg (Campus Sankt Augustin) Reward: 5-Euro Amazon Gutschein Contact: anton.sigitov [at] h-brs.de | M. Sc. Anton Sigitov | Research Associate | Institute of Visual Computing | Bonn-Rhein-Sieg University of Applied Sciences 

  • Subscribe to the Experiment-Newsletter
  • Interested in participating in upcoming experiments? Please subscribe to the newsletter!