Publications

Patents

  1. System for a Semiconductor Supply Chain, No. 09/912,028
  2. Prediction based Optimization of a Semiconductor Supply Chain Using an Adaptive Real Time Work-in-Progress Tracking System, No. 09/912,030
  3. System and Method for visually representing time-based data, No. 61/051,176

Books

  1. Ronny Kramer, Marko Modsching, Klaus ten Hagen; "Teil II - Aufgabendelegation im E-Tourismus" (pp. 151 - 240) in Alexander Rossnagel, Philip Laue, Jan Peter (Editors) "Delegation von Aufgaben an IT Assistenzsysteme" Gabler | GWV Fachverlage GmH, Wiesbaden 2009
  2. Marko Modsching, Ronny Kramer, Klaus ten Hagen, "Integration of a Restaurant as a Tour Component into a Tour Guide Planning Systems" in "Information, Communication and Work Process Optimization with Mobile Systems: Figures, Results and Perspectives on the IKAROS Project", edited by Uwe Grossmann, Juergen Kawalek, Juergen Sieck, Gito Verlag, May 9, 2008.
  3. Marko Modsching, Ronny Kramer, Ulrike Gretzel, Klaus ten Hagen; "The impact of a push and pull based electronic tour guide on the behaviour of tourists" in "Information, Kommunikation und Arbeitsprozessoptimierung mit Mobilen Systemen: Figures, results and perspectives on the IKAROS project", edited by Uwe Grossmann, Juergen Kawalek, Juergen Sieck, Gito Verlag 2008.
  4. K. ten Hagen, Abstract Modeling of integrated Circuits w/ VHDL[1]Springer Heidelberg, New York, August 1995, ISBN 3-540-59134-5.

Supervised PhD Thesis

Ronny Kramer "Design and evaluation of a context- and interest-driven mobile application for tourism" at TU Clausthal in collaboration with Professors Joerg Mueller and Niels Pinkwart

Journals

1.      Marcel Riebeck, Annegret Stark, Marko Modsching, Juergen Kawalek, Klaus ten <st1:city w:st="on">Hagen</st1:city> "Studying the User Acceptance of a Mobile Information System for Tourists: Field Trial Results" to appear in "Journal of Information Technology Tourism (JITT)", IFITT <st1:place w:st="on"><st1:city w:st="on">Cognizant</st1:city>, <st1:country-region w:st="on">USA</st1:country-region></st1:place>,  & http://itt.ec3.at/ Editor-in-Chief Hannes Werthner

2.         Marko Modsching, Ronny Kramer, Ulrike Gretzel, Klaus ten Hagen "Using Location-Based Tracking Data to Analyze the Movements of City Tourists", in "Journal of  Information Technology & Tourism (JITT)", Vol. 10, Number 1, pp.31-42, IFITT Cognizant, USA, http://itt.ec3.at/ Editor-in-Chief Hannes Werthner

3.      <st1:personname w:st="on">Ronny Kramer</st1:personname>, <st1:personname w:st="on">Marko Modsching</st1:personname>, Klaus ten <st1:city w:st="on"><st1:place w:st="on">Hagen</st1:place></st1:city> "Development and evaluation of a context-driven, mobile tourist guide", "International Journal of Pervasive Computing and Communication (JPCC)", Vol. 3, Issue 4, (2008) pp. 378-399,  http://www.pervasive-computing.org/ http://www.troubador.co.uk/jpcc/

4.      <st1:personname w:st="on">Ronny Kramer</st1:personname>, <st1:personname w:st="on">Marko Modsching</st1:personname>, Klaus ten Hagen "A City Guide Agent Creating and Adapting Individual Sightseeing Tours Based on Field Trial Results", "International Journal of Computational Intelligence Research (IJCIR)", Vol. 2, No. 2 (2006) pp. 191-206, Research India Publications http://www.softcomputing.net/ijcir/

Proceedings

https://www.hszgstage1.de/5.         Marko Modsching, Ronny Kramer, Klaus ten Hagen, Ulrike Gretzel; "The impact of a push and pull based electronic tour guide on the behavior of tourists - Results from a field trial" in "Wirelesss Communication and Information" by Juergen Sieck and Michael A. Herzog (Editors), Verlag Werner Huelsbusch, Boizenburg, 2008

6.      Ronny Kramer, Marko Modsching, <st1:personname w:st="on">Marcel Riebeck</st1:personname>, Annegret Stark, Klaus ten Hagen "Field trial on the efficiency and user experience of GPS based state of the art navigational systems for pedestrians" in4th  Workshop on Positioning, Navigation and Communication 2007 (WPNC'07), Hannover, March 22nd  2007; http://www.wpnc.net/

7.      Marko Modsching, <st1:personname w:st="on">Ronny Kramer</st1:personname>, Klaus ten Hagen, Ulrike Gretzel; "Effectiveness of Mobile Recommender Systems for Tourist Destinations: A User Evaluation," AAAI Spring Symposium Series, March 26-28, 2007; <st1:place w:st="on"><st1:city w:st="on">Stanford University</st1:city>, <st1:state w:st="on">California</st1:state></st1:place>; http://www.aaai.org/Symposia/Spring/

8.         Ronny Kramer, Marko Modsching, Klaus ten Hagen, Ulrike Gretzel: "Behavioral Impacts of Mobile Tour Guide Perceptions" in "Information and Communication Technologies in Tourism 2007" (ENTER 2007), Springer Computer Science, January, 2007; http://www.ifitt.org/enter/

9.         <st1:personname w:st="on">Ronny Kramer</st1:personname>, Marko Modsching, Klaus ten Hagen, Ulrike Gretzel; "Web-based Recommenders for Personalized City Tours: A Usage Analysis" in "Information and Communication Technologies in Tourism 2007" (ENTER 2007), Springer Computer Science, January, 2007; http://www.ifitt.org/enter/

10.  <st1:personname w:st="on">Ronny Kramer</st1:personname>, Marko Modsching, Klaus ten Hagen, <st1:personname w:st="on">Ulrike Gretzel</st1:personname>; "Evaluating Different Preference Elicitation Methods for a Mobile Recommender System in a Field Trial"; ECAI 2006, Workshop on Recommender Systems; http://www.ifi.uni-klu.ac.at/IWAS/GF/Conferences/ECAI06-Recommender-Workshop/workshop_proceedings

11.  Klaus ten Hagen, <st1:personname w:st="on">Ronny Kramer</st1:personname>, Marko Modsching, <st1:personname w:st="on">Ulrike Gretzel</st1:personname>; "The impact of mobile information systems on the behavior of tourists: Results from a field study", EVA 2006, Electronic Imaging & the Visual Arts, <st1:place w:st="on"><st1:state w:st="on">Berlin</st1:state></st1:place>, November 8-10, 2006, http://www.gfai.de/pinboard/eva/e_index.htm

12.  Marko Modsching, <st1:personname w:st="on">Ronny Kramer</st1:personname>, Klaus ten Hagen, "Using geographic information data to analyze spatial behavior in eTourism" in GeoForum MV 2006, <st1:place w:st="on"><st1:city w:st="on">Rostock</st1:city></st1:place>, 25-26.April 2006; http://www.geomv.de/

13.  <st1:personname w:st="on">Marko Modsching</st1:personname>, Ronny Kramer, Klaus ten Hagen, "Field Trial on GPS Accuracy in a medium size city: The influence of built-up" https://www.hszgstage1.de/in3rd Workshop on Positioning, Navigation and Communication 2006 (WPNC'06), <st1:place w:st="on">Hannover</st1:place>, March 16th 2006; http://www.wpnc.net/

14.  Klaus ten Hagen, Ronny Kramer, <st1:personname w:st="on">Marko Modsching</st1:personname> "Field Study on Methods for Elicitation of Preferences using a Mobile Digital Assistant for a Dynamic Tour Guide", 21st Annual ACM Symposium on Applied Computing, Dijon, France, April, 2006; http://www.acm.org/conferences/sac/sac2006/

15.  <st1:personname w:st="on">Marko Modsching</st1:personname>, Ronny Kramer, <st1:personname w:st="on">Ulrike Gretzel</st1:personname>, Klaus ten Hagen "Capturing the beaten paths: A novel method for analyzing tourists' spatial behavior at an urban destination" in "Information and Communication Technologies in Tourism 2006" (ENTER 2006), Springer Computer Science, January, 2006; http://www.ifitt.org/enter/

16.  Ronny Kramer, <st1:personname w:st="on">Marko Modsching</st1:personname>, Klaus ten Hagen, <st1:personname w:st="on">Ulrike Gretzel</st1:personname>, A Field Trial to Elicit Individual Preferences in the Context of a Mobile Dynamic Tour Guide, in "Information and Communication Technologies in Tourism 2006" (ENTER 2006), Springer Computer Science, January, 2006; http://www.ifitt.org/enter/

17.  Ronny Kramer, <st1:personname w:st="on">Marko Modsching</st1:personname>, Klaus ten Hagen; Adaptation of a tour-plan to user behavior in real-time; Workshop at ENTER 2006, January 2006, http://www.ifitt.org/enter/

18.  <st1:personname w:st="on">Marko Modsching</st1:personname>, Ronny Kramer, Klaus ten Hagen; Integration of a Restaurant as a Tour Component into a Tour Guide Planning System; Workshop at ENTER 2006, January 2006, http://www.ifitt.org/enter/

19.  Ronny Kramer, <st1:personname w:st="on">Marko Modsching</st1:personname>, Klaus ten Hagen; A city guide creating and adapting individual sightseeing tours; Wireless Communication and Information (WCI 2005), Berlin, Germany; October 14, 2005; http://inka.f4.fhtw-berlin.de/wci/de/

20.  Klaus ten Hagen, <st1:personname w:st="on">Marko Modsching</st1:personname> and Ronny Kramer, "A city guide agent creating and adapting individual sightseeing tours" in 5th International Conference on Intelligent Systems Design and Applications (ISDA 2005) in Wroclaw, Poland, September 8-10 2005; http://www.isda2005.pwr.wroc.pl/

21.  Klaus ten Hagen, <st1:personname w:st="on">Marko Modsching</st1:personname> and <st1:personname w:st="on">Ronny Kramer</st1:personname>, "A location-aware mobile tourist guide selecting and interpreting sights and services by context matching" in 2nd Annual International Conference on <st1:city w:st="on">Mobile</st1:city> and Ubiquitous Systems: Networking and Services (Mobiquitous 2005), <st1:place w:st="on"><st1:city w:st="on">San Diego</st1:city>, <st1:state w:st="on">California</st1:state></st1:place>, July 17-21 2005; http://www.mobiquitous.org/

22.  <st1:personname w:st="on">Marko Modsching</st1:personname>, <st1:personname w:st="on">Ronny Kramer</st1:personname> and Klaus ten Hagen, "Context-aware adaptation in mobile tour guide", in 5th International and Interdisciplinary Conference on Modeling and using Context (Context 05), Paris, France, June 5-8 2005; http://context-05.org/

23.  <st1:personname w:st="on">MarkoModsching</st1:personname>, Ronny Kramer, Klaus ten Hagen, "Individuelle Stadtführungen mit einem Dynamischen Tour Guide", in AGIT 2005, Symposium und Fachmesse für angewandte GeoInformatik, Salzburg, July, 2005 ; http://www.agit.at/

24.  Ronny Kramer, <st1:personname w:st="on">Marko Modsching</st1:personname>, <st1:personname w:st="on">Joerg Schulze</st1:personname>, <st1:personname w:st="on">Marcel Hermkes</st1:personname> and Klaus ten Hagen, "Context-driven, adaptive tour computation and information presentation" in5th  International Workshop on Managing Context Information in Mobile and Pervasive Environments (MCMP-05), Ayia Napa, Cyprus, May 9th 2005  http://ceur-ws.org/vol-165/

25.  <st1:personname w:st="on">Ronny Kramer</st1:personname>, <st1:personname w:st="on">Marko Modsching</st1:personname> and Klaus ten Hagen, "Context based Navigation by a Dynamic Tour Guide" in2nd Workshop on Positioning, Navigation and Communication 2005 (WPNC'05), Hannover, March 17th 2005; http://www.wpnc.net/

26.  <st1:personname w:st="on">Ronny Kramer</st1:personname>, <st1:personname w:st="on">Marko Modsching</st1:personname>, <st1:personname w:st="on">Joerg Schulze</st1:personname> and Klaus ten Hagen, "Semantic Matching of tourists' interests with local sights and services" in ITB 2005 "Market Trends and Innovations", Berlin, March 11th 2005

27.  Klaus ten Hagen, <st1:personname w:st="on">Ronny Kramer</st1:personname>, <st1:personname w:st="on">Marcel Hermkes</st1:personname> et al, "Semantic Matching and Heuristic Search for a Dynamic Tour Guide" in "Information and Communication Technologies in Tourism 2005", Springer Computer Science


[1] Abstract modeling of digital circuits (VHDL from functional model to gate level)