SlideShare uma empresa Scribd logo
1 de 16
New Broadcasting Ways In IPTV –
The Case of the Starcraft
Broadcasting Scene

World Media Economics & Management Conference
Thessaloniki, 25.05.2012

Tobias M. Scholz
University of Siegen
tobias.scholz@uni-siegen.de


                                                Pictures by Julia Christophers
Current Situation




“
          Piracy is almost
          always a service




                                 ”
          problem and not
          a pricing problem.

                   Gabe Newell, 2011




Tobias M. Scholz                       pmg.uni-siegen.de   2
eSports (1)



•    „eSports is an area of sport activities in
     which people develop and train mental or
     physical abilities in the use of information
     and communication technologies.“
     (Wagner, 2006)




•    Typical eSports member:
       –    Age between 18-29
       –    Male
       –    Extremely technophile
       –    Digital native
       –    Plays in average 100 minutes per day
            (ESL Study, 2011)




Tobias M. Scholz                        pmg.uni-siegen.de   3
Why is eSports an interesting research field



•    Over 10 years expertise in IPTV
       – Isolated from traditional media (only few interactions)
       – Spearheading the videostream technology
•    Generates revenue
       – Advertising
       – Sponsoring
       – Pay per view
•    Video streaming and video demand structure exists
•    User generated content
       – News platforms
       – eSports-related Wikipedia
       – Coverage, results and statistics are community driven
•    Unique target audience
•    Piracy is no issue
•    Niche, but vivid and volatile, industry


Tobias M. Scholz                         pmg.uni-siegen.de         4
Starcraft II




•    Release: 2010

•    Developer: Blizzard Entertainment

•    Genre: Real Time Strategy

•    Players:          3.740.940
     Europe:           1.052.755
     America:          1.381.444
     Korea/Taiwan:     796.600
     Southeast Asia:   152.399
     China:            352.740
     (sc2ranks.com)


Tobias M. Scholz                   pmg.uni-siegen.de   5
IPTV in eSports (1)




Tobias M. Scholz      pmg.uni-siegen.de   6
IPTV in eSports (2)




Tobias M. Scholz      pmg.uni-siegen.de   7
IPTV in eSports (3)




Tobias M. Scholz      pmg.uni-siegen.de   8
Team Liquid TLO (11.10.2011)




Tobias M. Scholz               pmg.uni-siegen.de   9
Tournament Operators (1)



•    Tournament operators are the driving force
     behind IPTV in eSports

•    Other streamers are:
       –    Professional gamers
       –    Independent casters
       –    Upcoming amateurs
       –    Etc.




•    Lack of explicit and consistent way of counting
     viewer numbers
       – Peak number of concurrent viewers
       – Gross numbers (every time somebody is
         opening the stream)
       – Absolute number of viewers



Tobias M. Scholz                      pmg.uni-siegen.de   10
Tournament Operators (2)



•    Dreamhack Summer 2011 had over 1.5 million
     absolute viewers.

•    GSL Team League in February 2011 had a peak of
     377.000 viewers in their finals.

•    GSL announced for the time from 2009 until June
     2011 that it had over 53 million viewer combined live
     and VoDs.

•    Several peak numbers
       – Dreamhack Summer 2011: 65.535
       – NASL finals 2011: 84.323


•    IEM had over 4 million contacts (gross numbers).


Tobias M. Scholz                    pmg.uni-siegen.de        11
Tournament Operators (3)




Tobias M. Scholz           pmg.uni-siegen.de   12
Streams on the 19.6.2011




Tobias M. Scholz           pmg.uni-siegen.de   13
Barcraft



•    „An event is basically a gathering of individuals
     in a public setting such as a pub or restaurant
     for the purpose of viewing live or pre-recorded
     Starcraft II competition [...] while enjoying some good
     grub and good company.“
     (Malarh, 2011)




                   Barcrafts in 2011 (Xifan, 2011)




Tobias M. Scholz                         pmg.uni-siegen.de     14
Results



•    Easy access is the key criterion.

•    Strong need for interaction and participation.
     Problems with the focus on players.

•    Community-based content generation is
     allowed and encouraged.

•    Advertising and pay per view is no hindrance,
     but support for eSports in general and
     streamers in specific.

•    Cost-efficiency is attracting traditional television
     (cooperations with CBS and ZDF).

•    Stars and innovation emerge within the community.
Tobias M. Scholz                       pmg.uni-siegen.de    15
Thank you




http://www.gamestudy.de
http://pmg.uni-siegen.de
tobias.scholz@uni-siegen.de




Tobias M. Scholz              pmg.uni-siegen.de   16

Mais conteúdo relacionado

Destaque (7)

Saurav Nishant_CV
Saurav Nishant_CVSaurav Nishant_CV
Saurav Nishant_CV
 
Cv dominique emmanuel
Cv dominique emmanuelCv dominique emmanuel
Cv dominique emmanuel
 
The ultimateresourceguidetosocialmediamarketing
The ultimateresourceguidetosocialmediamarketingThe ultimateresourceguidetosocialmediamarketing
The ultimateresourceguidetosocialmediamarketing
 
Agiles Business Process Management
Agiles Business Process ManagementAgiles Business Process Management
Agiles Business Process Management
 
PLM Open Hours - PLM und Kennzahlen
PLM Open Hours - PLM und KennzahlenPLM Open Hours - PLM und Kennzahlen
PLM Open Hours - PLM und Kennzahlen
 
23 organisationsentwicklung 2015
23 organisationsentwicklung 201523 organisationsentwicklung 2015
23 organisationsentwicklung 2015
 
Vorlesung allgvwr ss
Vorlesung allgvwr ssVorlesung allgvwr ss
Vorlesung allgvwr ss
 

Semelhante a New Broadcasting Ways In IPTV – The Case of the Starcraft Broadcasting Scene

Dr. Malte Behrmann, Games für Mobile Phones und Pads
Dr. Malte Behrmann, Games für Mobile Phones und PadsDr. Malte Behrmann, Games für Mobile Phones und Pads
Dr. Malte Behrmann, Games für Mobile Phones und Pads
Aberla
 
Assassin s creed-3---liberation (2)
Assassin s creed-3---liberation (2)Assassin s creed-3---liberation (2)
Assassin s creed-3---liberation (2)
Maciek Strzyzewski
 
Don't be anti-social (2013-Oct-21)
Don't be anti-social (2013-Oct-21)Don't be anti-social (2013-Oct-21)
Don't be anti-social (2013-Oct-21)
Gerald Tan
 
Video games Introductions
Video games IntroductionsVideo games Introductions
Video games Introductions
dpagoffs
 

Semelhante a New Broadcasting Ways In IPTV – The Case of the Starcraft Broadcasting Scene (20)

Game Business Overview Talk - A Presentation at the MSeed Accelerator Program
Game Business Overview Talk - A Presentation at the MSeed Accelerator ProgramGame Business Overview Talk - A Presentation at the MSeed Accelerator Program
Game Business Overview Talk - A Presentation at the MSeed Accelerator Program
 
Dr. Malte Behrmann, Games für Mobile Phones und Pads
Dr. Malte Behrmann, Games für Mobile Phones und PadsDr. Malte Behrmann, Games für Mobile Phones und Pads
Dr. Malte Behrmann, Games für Mobile Phones und Pads
 
Xbox in china - Microsoft
Xbox in china  - MicrosoftXbox in china  - Microsoft
Xbox in china - Microsoft
 
Video games, by the numbers - Michael Pachter, Wedbush Securities
Video games, by the numbers - Michael Pachter, Wedbush SecuritiesVideo games, by the numbers - Michael Pachter, Wedbush Securities
Video games, by the numbers - Michael Pachter, Wedbush Securities
 
Assassin s creed-3---liberation (2)
Assassin s creed-3---liberation (2)Assassin s creed-3---liberation (2)
Assassin s creed-3---liberation (2)
 
Assassin s creed-3---liberation
Assassin s creed-3---liberationAssassin s creed-3---liberation
Assassin s creed-3---liberation
 
Iabm keynote 5 december 2013
Iabm keynote 5 december 2013Iabm keynote 5 december 2013
Iabm keynote 5 december 2013
 
Challenges and Oppotunities in the Videogame Industry
Challenges and Oppotunities in the Videogame IndustryChallenges and Oppotunities in the Videogame Industry
Challenges and Oppotunities in the Videogame Industry
 
Don't be anti-social (2013-Oct-21)
Don't be anti-social (2013-Oct-21)Don't be anti-social (2013-Oct-21)
Don't be anti-social (2013-Oct-21)
 
Game show teaser
Game show teaserGame show teaser
Game show teaser
 
Atd presentation
Atd presentationAtd presentation
Atd presentation
 
Media Studies Video games Minecraft 12 03 19
Media Studies Video games Minecraft 12 03 19Media Studies Video games Minecraft 12 03 19
Media Studies Video games Minecraft 12 03 19
 
Ims333 vc project
Ims333 vc projectIms333 vc project
Ims333 vc project
 
Video games Introductions
Video games IntroductionsVideo games Introductions
Video games Introductions
 
International Floorball Federation Facts and Figures
International Floorball Federation Facts and FiguresInternational Floorball Federation Facts and Figures
International Floorball Federation Facts and Figures
 
Hunting Godzilla - Ben Holmes - Slush 2015
Hunting Godzilla - Ben Holmes - Slush 2015Hunting Godzilla - Ben Holmes - Slush 2015
Hunting Godzilla - Ben Holmes - Slush 2015
 
NVI Deconstructing IoT 3 jJly 2013 by Maurizio Pilu - CDEC
NVI Deconstructing IoT  3 jJly 2013  by Maurizio Pilu - CDEC NVI Deconstructing IoT  3 jJly 2013  by Maurizio Pilu - CDEC
NVI Deconstructing IoT 3 jJly 2013 by Maurizio Pilu - CDEC
 
To what extent does media ownership affect video game audiences.pptx
To what extent does media ownership affect video game audiences.pptxTo what extent does media ownership affect video game audiences.pptx
To what extent does media ownership affect video game audiences.pptx
 
Fire kills presentation
Fire kills presentationFire kills presentation
Fire kills presentation
 
Captive Media for Brands
Captive Media for BrandsCaptive Media for Brands
Captive Media for Brands
 

Mais de Tobias Scholz

Grüne Personalarbeit: "Green HRM" – Eine Chance für die Integration von Ökono...
Grüne Personalarbeit: "Green HRM" – Eine Chance für die Integration von Ökono...Grüne Personalarbeit: "Green HRM" – Eine Chance für die Integration von Ökono...
Grüne Personalarbeit: "Green HRM" – Eine Chance für die Integration von Ökono...
Tobias Scholz
 
Creating a Dynamic Framework for Human Resource Management
Creating a Dynamic Framework for Human Resource ManagementCreating a Dynamic Framework for Human Resource Management
Creating a Dynamic Framework for Human Resource Management
Tobias Scholz
 
Soziale Netzwerke als Mittel zur Intensivierung von Personalbindung und Perso...
Soziale Netzwerke als Mittel zur Intensivierung von Personalbindung und Perso...Soziale Netzwerke als Mittel zur Intensivierung von Personalbindung und Perso...
Soziale Netzwerke als Mittel zur Intensivierung von Personalbindung und Perso...
Tobias Scholz
 
Reconceptualizing Human Resource Management by Inclusion of Social Networks –...
Reconceptualizing Human Resource Management by Inclusion of Social Networks –...Reconceptualizing Human Resource Management by Inclusion of Social Networks –...
Reconceptualizing Human Resource Management by Inclusion of Social Networks –...
Tobias Scholz
 

Mais de Tobias Scholz (9)

Dynamic Language For Dynamic Organization: The Role Of Human Resource Management
Dynamic Language For Dynamic Organization: The Role Of Human Resource ManagementDynamic Language For Dynamic Organization: The Role Of Human Resource Management
Dynamic Language For Dynamic Organization: The Role Of Human Resource Management
 
Grüne Personalarbeit: "Green HRM" – Eine Chance für die Integration von Ökono...
Grüne Personalarbeit: "Green HRM" – Eine Chance für die Integration von Ökono...Grüne Personalarbeit: "Green HRM" – Eine Chance für die Integration von Ökono...
Grüne Personalarbeit: "Green HRM" – Eine Chance für die Integration von Ökono...
 
Creating a Dynamic Framework for Human Resource Management
Creating a Dynamic Framework for Human Resource ManagementCreating a Dynamic Framework for Human Resource Management
Creating a Dynamic Framework for Human Resource Management
 
Soziale Netzwerke als Mittel zur Intensivierung von Personalbindung und Perso...
Soziale Netzwerke als Mittel zur Intensivierung von Personalbindung und Perso...Soziale Netzwerke als Mittel zur Intensivierung von Personalbindung und Perso...
Soziale Netzwerke als Mittel zur Intensivierung von Personalbindung und Perso...
 
Reconceptualizing Human Resource Management by Inclusion of Social Networks –...
Reconceptualizing Human Resource Management by Inclusion of Social Networks –...Reconceptualizing Human Resource Management by Inclusion of Social Networks –...
Reconceptualizing Human Resource Management by Inclusion of Social Networks –...
 
Strategic Renewal Of Complex Systems Based On The Case Of The 1. FC Kaisersla...
Strategic Renewal Of Complex Systems Based On The Case Of The 1. FC Kaisersla...Strategic Renewal Of Complex Systems Based On The Case Of The 1. FC Kaisersla...
Strategic Renewal Of Complex Systems Based On The Case Of The 1. FC Kaisersla...
 
International Talent Management – Tentative Implications from Cultural Backgr...
International Talent Management – Tentative Implications from Cultural Backgr...International Talent Management – Tentative Implications from Cultural Backgr...
International Talent Management – Tentative Implications from Cultural Backgr...
 
What can we learn from Game Leaderhsip?
What can we learn from Game Leaderhsip? What can we learn from Game Leaderhsip?
What can we learn from Game Leaderhsip?
 
Different Jobs Need Different Cultures
Different Jobs Need Different CulturesDifferent Jobs Need Different Cultures
Different Jobs Need Different Cultures
 

Último

0183760ssssssssssssssssssssssssssss00101011 (27).pdf
0183760ssssssssssssssssssssssssssss00101011 (27).pdf0183760ssssssssssssssssssssssssssss00101011 (27).pdf
0183760ssssssssssssssssssssssssssss00101011 (27).pdf
Renandantas16
 
Call Girls In DLf Gurgaon ➥99902@11544 ( Best price)100% Genuine Escort In 24...
Call Girls In DLf Gurgaon ➥99902@11544 ( Best price)100% Genuine Escort In 24...Call Girls In DLf Gurgaon ➥99902@11544 ( Best price)100% Genuine Escort In 24...
Call Girls In DLf Gurgaon ➥99902@11544 ( Best price)100% Genuine Escort In 24...
lizamodels9
 
Call Girls Electronic City Just Call 👗 7737669865 👗 Top Class Call Girl Servi...
Call Girls Electronic City Just Call 👗 7737669865 👗 Top Class Call Girl Servi...Call Girls Electronic City Just Call 👗 7737669865 👗 Top Class Call Girl Servi...
Call Girls Electronic City Just Call 👗 7737669865 👗 Top Class Call Girl Servi...
amitlee9823
 

Último (20)

John Halpern sued for sexual assault.pdf
John Halpern sued for sexual assault.pdfJohn Halpern sued for sexual assault.pdf
John Halpern sued for sexual assault.pdf
 
0183760ssssssssssssssssssssssssssss00101011 (27).pdf
0183760ssssssssssssssssssssssssssss00101011 (27).pdf0183760ssssssssssssssssssssssssssss00101011 (27).pdf
0183760ssssssssssssssssssssssssssss00101011 (27).pdf
 
The Path to Product Excellence: Avoiding Common Pitfalls and Enhancing Commun...
The Path to Product Excellence: Avoiding Common Pitfalls and Enhancing Commun...The Path to Product Excellence: Avoiding Common Pitfalls and Enhancing Commun...
The Path to Product Excellence: Avoiding Common Pitfalls and Enhancing Commun...
 
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best ServicesMysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
 
Monte Carlo simulation : Simulation using MCSM
Monte Carlo simulation : Simulation using MCSMMonte Carlo simulation : Simulation using MCSM
Monte Carlo simulation : Simulation using MCSM
 
Grateful 7 speech thanking everyone that has helped.pdf
Grateful 7 speech thanking everyone that has helped.pdfGrateful 7 speech thanking everyone that has helped.pdf
Grateful 7 speech thanking everyone that has helped.pdf
 
Call Girls In DLf Gurgaon ➥99902@11544 ( Best price)100% Genuine Escort In 24...
Call Girls In DLf Gurgaon ➥99902@11544 ( Best price)100% Genuine Escort In 24...Call Girls In DLf Gurgaon ➥99902@11544 ( Best price)100% Genuine Escort In 24...
Call Girls In DLf Gurgaon ➥99902@11544 ( Best price)100% Genuine Escort In 24...
 
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...
 
It will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 MayIt will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 May
 
Forklift Operations: Safety through Cartoons
Forklift Operations: Safety through CartoonsForklift Operations: Safety through Cartoons
Forklift Operations: Safety through Cartoons
 
Call Girls Electronic City Just Call 👗 7737669865 👗 Top Class Call Girl Servi...
Call Girls Electronic City Just Call 👗 7737669865 👗 Top Class Call Girl Servi...Call Girls Electronic City Just Call 👗 7737669865 👗 Top Class Call Girl Servi...
Call Girls Electronic City Just Call 👗 7737669865 👗 Top Class Call Girl Servi...
 
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779Best VIP Call Girls Noida Sector 40 Call Me: 8448380779
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779
 
7.pdf This presentation captures many uses and the significance of the number...
7.pdf This presentation captures many uses and the significance of the number...7.pdf This presentation captures many uses and the significance of the number...
7.pdf This presentation captures many uses and the significance of the number...
 
👉Chandigarh Call Girls 👉9878799926👉Just Call👉Chandigarh Call Girl In Chandiga...
👉Chandigarh Call Girls 👉9878799926👉Just Call👉Chandigarh Call Girl In Chandiga...👉Chandigarh Call Girls 👉9878799926👉Just Call👉Chandigarh Call Girl In Chandiga...
👉Chandigarh Call Girls 👉9878799926👉Just Call👉Chandigarh Call Girl In Chandiga...
 
A DAY IN THE LIFE OF A SALESMAN / WOMAN
A DAY IN THE LIFE OF A  SALESMAN / WOMANA DAY IN THE LIFE OF A  SALESMAN / WOMAN
A DAY IN THE LIFE OF A SALESMAN / WOMAN
 
B.COM Unit – 4 ( CORPORATE SOCIAL RESPONSIBILITY ( CSR ).pptx
B.COM Unit – 4 ( CORPORATE SOCIAL RESPONSIBILITY ( CSR ).pptxB.COM Unit – 4 ( CORPORATE SOCIAL RESPONSIBILITY ( CSR ).pptx
B.COM Unit – 4 ( CORPORATE SOCIAL RESPONSIBILITY ( CSR ).pptx
 
Famous Olympic Siblings from the 21st Century
Famous Olympic Siblings from the 21st CenturyFamous Olympic Siblings from the 21st Century
Famous Olympic Siblings from the 21st Century
 
VIP Call Girls In Saharaganj ( Lucknow ) 🔝 8923113531 🔝 Cash Payment (COD) 👒
VIP Call Girls In Saharaganj ( Lucknow  ) 🔝 8923113531 🔝  Cash Payment (COD) 👒VIP Call Girls In Saharaganj ( Lucknow  ) 🔝 8923113531 🔝  Cash Payment (COD) 👒
VIP Call Girls In Saharaganj ( Lucknow ) 🔝 8923113531 🔝 Cash Payment (COD) 👒
 
M.C Lodges -- Guest House in Jhang.
M.C Lodges --  Guest House in Jhang.M.C Lodges --  Guest House in Jhang.
M.C Lodges -- Guest House in Jhang.
 
Organizational Transformation Lead with Culture
Organizational Transformation Lead with CultureOrganizational Transformation Lead with Culture
Organizational Transformation Lead with Culture
 

New Broadcasting Ways In IPTV – The Case of the Starcraft Broadcasting Scene

  • 1. New Broadcasting Ways In IPTV – The Case of the Starcraft Broadcasting Scene World Media Economics & Management Conference Thessaloniki, 25.05.2012 Tobias M. Scholz University of Siegen tobias.scholz@uni-siegen.de Pictures by Julia Christophers
  • 2. Current Situation “ Piracy is almost always a service ” problem and not a pricing problem. Gabe Newell, 2011 Tobias M. Scholz pmg.uni-siegen.de 2
  • 3. eSports (1) • „eSports is an area of sport activities in which people develop and train mental or physical abilities in the use of information and communication technologies.“ (Wagner, 2006) • Typical eSports member: – Age between 18-29 – Male – Extremely technophile – Digital native – Plays in average 100 minutes per day (ESL Study, 2011) Tobias M. Scholz pmg.uni-siegen.de 3
  • 4. Why is eSports an interesting research field • Over 10 years expertise in IPTV – Isolated from traditional media (only few interactions) – Spearheading the videostream technology • Generates revenue – Advertising – Sponsoring – Pay per view • Video streaming and video demand structure exists • User generated content – News platforms – eSports-related Wikipedia – Coverage, results and statistics are community driven • Unique target audience • Piracy is no issue • Niche, but vivid and volatile, industry Tobias M. Scholz pmg.uni-siegen.de 4
  • 5. Starcraft II • Release: 2010 • Developer: Blizzard Entertainment • Genre: Real Time Strategy • Players: 3.740.940 Europe: 1.052.755 America: 1.381.444 Korea/Taiwan: 796.600 Southeast Asia: 152.399 China: 352.740 (sc2ranks.com) Tobias M. Scholz pmg.uni-siegen.de 5
  • 6. IPTV in eSports (1) Tobias M. Scholz pmg.uni-siegen.de 6
  • 7. IPTV in eSports (2) Tobias M. Scholz pmg.uni-siegen.de 7
  • 8. IPTV in eSports (3) Tobias M. Scholz pmg.uni-siegen.de 8
  • 9. Team Liquid TLO (11.10.2011) Tobias M. Scholz pmg.uni-siegen.de 9
  • 10. Tournament Operators (1) • Tournament operators are the driving force behind IPTV in eSports • Other streamers are: – Professional gamers – Independent casters – Upcoming amateurs – Etc. • Lack of explicit and consistent way of counting viewer numbers – Peak number of concurrent viewers – Gross numbers (every time somebody is opening the stream) – Absolute number of viewers Tobias M. Scholz pmg.uni-siegen.de 10
  • 11. Tournament Operators (2) • Dreamhack Summer 2011 had over 1.5 million absolute viewers. • GSL Team League in February 2011 had a peak of 377.000 viewers in their finals. • GSL announced for the time from 2009 until June 2011 that it had over 53 million viewer combined live and VoDs. • Several peak numbers – Dreamhack Summer 2011: 65.535 – NASL finals 2011: 84.323 • IEM had over 4 million contacts (gross numbers). Tobias M. Scholz pmg.uni-siegen.de 11
  • 12. Tournament Operators (3) Tobias M. Scholz pmg.uni-siegen.de 12
  • 13. Streams on the 19.6.2011 Tobias M. Scholz pmg.uni-siegen.de 13
  • 14. Barcraft • „An event is basically a gathering of individuals in a public setting such as a pub or restaurant for the purpose of viewing live or pre-recorded Starcraft II competition [...] while enjoying some good grub and good company.“ (Malarh, 2011) Barcrafts in 2011 (Xifan, 2011) Tobias M. Scholz pmg.uni-siegen.de 14
  • 15. Results • Easy access is the key criterion. • Strong need for interaction and participation. Problems with the focus on players. • Community-based content generation is allowed and encouraged. • Advertising and pay per view is no hindrance, but support for eSports in general and streamers in specific. • Cost-efficiency is attracting traditional television (cooperations with CBS and ZDF). • Stars and innovation emerge within the community. Tobias M. Scholz pmg.uni-siegen.de 15