@inproceedings{FredebeulKrein2008, author = {Fredebeul-Krein, Markus}, title = {Time for revision: The regulation of Germany's next generation networks in the light of new economic and technological challenges on telecom markets : Presentation for the 18th Biennial conference of the International Telecommunications Society, June 24-27, 2008 Montreal, Canada}, year = {2008}, abstract = {On 1st January 1998, the German telecom market was fully liberalised. Since then genuine competition between market participants has developed, based on a comprehensive legal and regulatory framework that provides for safeguards against unfair competition and market power by Deutsche Telekom. Today, about 10 years after the liberalisation of the telecommunications sector a revision of this regulatory approach has become necessary because at least on three dimensions the situation is quite different from the one 10 years ago: First, with numerous established alternative operators in the market monopolies have been successfully challenged and competition introduced. Second, not only is Cable TV becoming in large parts of Germany a viable alternative for the provision of broadband services but also mobile services are becoming increasingly a substitute for fixed services. Last but not least there are important technological changes under way, requiring huge investments in infrastructure upgrades for next generation networks. In the light of these new developments the question is to which extent the current regulatory approach of severe ex-ante regulatory intervention is still appropriate. Is any part of the network of the former incumbent still a bottleneck? A more light handed regulatory approach might be the right response to this new situation. The paper is organised as follows: The first section will briefly examine the economic rationale for regulating network access. Based on the assumption that regulation is always necessary when bottlenecks exist regulatory principles for an efficient network access regime will be derived. The second section compares the situation of the German market in early 1998 with the one of today. Thereby three dimensions will be considered: the degree of competition, the potential for substitution and technological developments. The third section will define some requirements for the future regulation of telecom markets. Proposals will be elaborated how to ensure competitive telecom markets in the light of new economic and technological challenges.}, subject = {Telekommunikationsmarkt}, language = {en} } @inproceedings{FredebeulKrein2009, author = {Fredebeul-Krein, Markus}, title = {Encouraging competition and investment into next generation access networks: The case of long term risk sharing contracts}, year = {2009}, abstract = {Working paper distributed at 2nd Annual Next Generation Telecommunications Conference 2009, 13th - 14th October 2009, Brussels 14 pages Abstract Governments all over Europe are in the process of adopting new broadband strategies. The objective is to create modern telecommunications networks based on powerful broadband infrastructures". In doing so, they aim for innovative and investment-friendly concepts. For instance, in a recently published consultation paper on the subject the German regulator BNetzA declared that it will take "greater account of … reducing risks, securing the investment and innovation power, providing planning certainty and transparency - in order to support and advance broadband rollout in Germany". It further states that when regulating wholesale rates it has to be ensured that "… adequate incentives for network rollout are provided on the one hand, while sustainable and fair competition is ensured on the other". Also an EC draft recommendation on regulated network access is about to set new standards for the regulation of next generation access networks. According to the recommendation the prices of new assets shall be based on costs plus a projectspecific risk premium to be included in the costs of capital for the investment risk incurred by the operator. This approach has been criticised from various sides. In particular it has been questioned whether such an approach is adequate to meet the objectives of encouraging both competition and investment into next generation access networks. Against this background, the concept of "long term risk sharing contracts" has been proposed recently as an approach which does not only incorporate the various additional risks involved in the deployment of NGA infrastructure, but has several other advantages. This paper will demonstrate that the concept allows for competition to evolve at both the retail and wholesale level on fair, objective, non-discriminatory and transparent terms and conditions. Moreover, it ensures the highest possible investment incentive in line with socially desirable outcome. The paper is organised as follows: The next section will briefly outline the importance of encouraging competition and investment in an NGA-environment. The third section will specify the design of long term risk sharing contracts in view of achieving these objectives. The fourth section will examine potential problems associated with the concept. In doing so a way of how to deal with them will be elaborated. The last section will look at arguments against long term risk sharing contracts. It will be shown that these arguments are not strong enough to build a case against introducing such contracts.}, subject = {Electronic Commerce}, language = {en} } @inproceedings{FredebeulKreinHaunert2008, author = {Fredebeul-Krein, Markus and Haunert, Martina}, title = {Assessing the effectiveness of price cap regimes for the regulation of fixed telephony markets: has it been successful in achieving competition? : preliminary draft / by Markus Fredebeul-Krein and Martina Haunert. 19th European Regional ITS Conference of the International Telecommunications Society, September 17-19, 2008 Rome, Italy}, year = {2008}, abstract = {1. Introduction 2. Tariff regulation, rebalancing and price caps 3. Price cap regimes in selected European countries 4. Has price cap regulation been successful? 5. Regulatory implications for other countries}, subject = {Telekommunikationsmarkt}, language = {en} } @article{SchulteZurhausenPoznanska1994, author = {Schulte-Zurhausen, Manfred and Poznanska, K.}, title = {Kryteria klasyfikacji malych i srednich przedsiebiorstw = Kriterien zur Klassifizierung von kleinen und mittleren Unternehmen}, series = {Przeglad Organizacji (1994)}, journal = {Przeglad Organizacji (1994)}, pages = {24 -- 27}, year = {1994}, language = {en} } @article{FredebeulKrein1999, author = {Fredebeul-Krein, Markus}, title = {The case for a more binding WTO agreement on regulatory principles in telecommunication markets}, series = {Telecommunications policy. vol. 23 (1999), H. afl. 9}, journal = {Telecommunications policy. vol. 23 (1999), H. afl. 9}, isbn = {0308-5961}, pages = {625 -- 644}, year = {1999}, language = {en} } @article{FredebeulKrein1997, author = {Fredebeul-Krein, Markus}, title = {Telecommunications and WTO discipline : an assessment of the WTO agreement on telecommunication services}, series = {Telecommunications policy. 21 (1997), H. 6}, journal = {Telecommunications policy. 21 (1997), H. 6}, isbn = {0308-5961}, pages = {477 -- 491}, year = {1997}, language = {en} } @article{Grap2003, author = {Grap, Rolf Dietmar}, title = {Determining manpower requirements in a spinning mill}, series = {Chemical fibers international : CFI ; fiber polymers, fibers, texturing, and spunbonds (2003)}, journal = {Chemical fibers international : CFI ; fiber polymers, fibers, texturing, and spunbonds (2003)}, isbn = {0340-3343}, pages = {455 -- 458}, year = {2003}, language = {en} } @article{JacobsQuernheimAghadavoodiJolfaei1991, author = {Jacobs, Stephan and Quernheim, Ulrich and Aghadavoodi Jolfaei, Masoud}, title = {Performance Evalutation of three Access Protocols for VSAT Networks / Ulrich Quernheim, Stephan Jacobs, Masoud Aghadavoodi Jolfaei}, series = {Proceedings of the second European Conference on Satellite Communications : ECSC-2 ; Palais de Congr{\`e}s, Li{\`e}ge, Belgium, 22 - 24 October 1991 / [ed.: Brigitte Kaldeich]}, journal = {Proceedings of the second European Conference on Satellite Communications : ECSC-2 ; Palais de Congr{\`e}s, Li{\`e}ge, Belgium, 22 - 24 October 1991 / [ed.: Brigitte Kaldeich]}, publisher = {ESA Publ. Div.}, address = {Noordwijk}, isbn = {92-9092-170-6}, pages = {XXXII, 533 S. : Ill., graph. Darst.}, year = {1991}, language = {en} } @article{JacobsQuernheim1990, author = {Jacobs, Stephan and Quernheim, Ulrich}, title = {ARQ Error Control for Multipoint Satellite Communications / Ulrich Quernheim, Stephan Jacobs}, series = {Computer networking : proceedings of the IFIP TC 6 Conference on Computer Networking, COMNET '90, Budapest, Hungary, 8-10 May, 1990 / edited by L{\´a}szl{\´o} Csaba, Tibor Szentiv{\´a}nyi, Katie Tarnay}, journal = {Computer networking : proceedings of the IFIP TC 6 Conference on Computer Networking, COMNET '90, Budapest, Hungary, 8-10 May, 1990 / edited by L{\´a}szl{\´o} Csaba, Tibor Szentiv{\´a}nyi, Katie Tarnay}, publisher = {Elsevier}, address = {New York, N.Y.}, isbn = {0444888721}, pages = {xi, 505 p : ill}, year = {1990}, language = {en} } @article{JacobsQuernheim1990, author = {Jacobs, Stephan and Quernheim, Ulrich}, title = {Multicopy ARQ Error Control Techniques for Multipoint Satellite Links / Ulrich Quernheim, Stephan Jacobs}, series = {Proceedings of the IFIP TC 6 International Conference on Information Network and Data Communication : Lillehammer, Norway, 26 - 29 March, 1990 / ed. by Dipak Khakhar ...}, journal = {Proceedings of the IFIP TC 6 International Conference on Information Network and Data Communication : Lillehammer, Norway, 26 - 29 March, 1990 / ed. by Dipak Khakhar ...}, publisher = {North-Holland}, address = {Amsterdam [u.a.]}, isbn = {0-444-88696-6}, pages = {XI, 411 S. : Ill., graph. Darst.}, year = {1990}, language = {en} } @article{JacobsQuernheim1990, author = {Jacobs, Stephan and Quernheim, Ulrich}, title = {Error Control Techniques for Digital Satellite Links}, series = {C-band antennas for regional communication systems : 1st European Conference Satellite Communications, ECSC-1, M{\"u}nchen, 28.-30.11.89 / Wolf, H. u.a. [Mitarb.]. Information und Dokumentation, Messerschmitt-B{\"o}lkow-Blohm GmbH (MBB), M{\"u}nchen}, journal = {C-band antennas for regional communication systems : 1st European Conference Satellite Communications, ECSC-1, M{\"u}nchen, 28.-30.11.89 / Wolf, H. u.a. [Mitarb.]. Information und Dokumentation, Messerschmitt-B{\"o}lkow-Blohm GmbH (MBB), M{\"u}nchen}, publisher = {OTN-Berichtsstelle, Technisch-wissenschaftliche Information, Messerschmitt-B{\"o}lkow-Blohm GmbH}, address = {M{\"u}nchen}, year = {1990}, language = {en} } @article{Jacobs1993, author = {Jacobs, Stephan}, title = {CSCW for Requirements Engineering - Requirements Engineering for CSCW}, series = {Proceedings of the Third European Conference on Computer Supported Cooperative Work : 13 - 17 September 1993, Milan, Italy ; ECSCW ' 93 / ed. by Giorgio de Michelis ...}, journal = {Proceedings of the Third European Conference on Computer Supported Cooperative Work : 13 - 17 September 1993, Milan, Italy ; ECSCW ' 93 / ed. by Giorgio de Michelis ...}, publisher = {Kluwer}, address = {Dordrecht [u.a.]}, isbn = {0-7923-2447-1}, pages = {XI, 364 S. : Ill., graph. Darst.}, year = {1993}, language = {en} } @article{JacobsHolten1995, author = {Jacobs, Stephan and Holten, Roland}, title = {Goal Driven Business Modelling - Supporting Decision Making within Information System Development}, series = {Conference on Organizational Computing Systems : August 13 - 16, 1995, Milpitas, Calif. / general ed. Nora Comstock ...}, journal = {Conference on Organizational Computing Systems : August 13 - 16, 1995, Milpitas, Calif. / general ed. Nora Comstock ...}, publisher = {ACM}, address = {New York, NY}, isbn = {0-89791-706-5}, pages = {III, 353 S. : graph. Darst.}, year = {1995}, language = {en} } @article{JacobsHermanns1996, author = {Jacobs, Stephan and Hermanns, Oliver}, title = {Cooperative Design: Requirements on Network Technology and Document Architecture}, series = {Selected papers of the 6th Joint European Networking Conference / guest ed.: J. Barber{\´a}}, journal = {Selected papers of the 6th Joint European Networking Conference / guest ed.: J. Barber{\´a}}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, pages = {S. 428 - 600 : Ill., graph. Darst.}, year = {1996}, language = {en} } @book{JacobsJarke1994, author = {Jacobs, Stephan and Jarke, Matthias}, title = {Requirements information management : the NATURE approach / RWTH Aachen, Fachgruppe Informatik. M. Jarke}, publisher = {RWTH, Fachgruppe Informatik}, address = {Aachen}, pages = {27 S : graph. Darst.}, year = {1994}, language = {en} } @article{JacobsJarkePohl1994, author = {Jacobs, Stephan and Jarke, Matthias and Pohl, Klaus}, title = {Requirements Engineering 1993}, series = {Automated software engineering : the international journal of automated reasoning and artificial intelligence in software engineering. Vol. 1 (1994), H. No. 1}, journal = {Automated software engineering : the international journal of automated reasoning and artificial intelligence in software engineering. Vol. 1 (1994), H. No. 1}, isbn = {0928-8910}, year = {1994}, language = {en} } @article{JacobsGrobKethers1994, author = {Jacobs, Stephan and Grob, Robert and Kethers, Stefanie}, title = {Towards CIS in Quality Management - Integration of Agents and Methods / Robert Grob, Stephan Jacobs, Stefanie Kethers}, series = {Proceedings of the Second International Conference on Cooperative Information Systems : May 17 - 20, 1994, Toronto, Canada / sponsored by the University of Toronto. Editors: Michael Brodie}, journal = {Proceedings of the Second International Conference on Cooperative Information Systems : May 17 - 20, 1994, Toronto, Canada / sponsored by the University of Toronto. Editors: Michael Brodie}, publisher = {University of Toronto Press}, address = {Toronto}, year = {1994}, language = {en} } @article{Jacobs1994, author = {Jacobs, Stephan}, title = {A Fault Diagnosis System Using Temporary Relations between Symptoms}, series = {Operations research '93 : extended abstracts of the 18th Symposium on Operations Research held at the University of Cologne, September 1 - 3, 1993 / Achim Bachem ... (ed.)}, journal = {Operations research '93 : extended abstracts of the 18th Symposium on Operations Research held at the University of Cologne, September 1 - 3, 1993 / Achim Bachem ... (ed.)}, publisher = {Physica-Verl.}, address = {Heidelberg}, isbn = {379080794X}, pages = {XXVI, 550 S : graph. Darst.}, year = {1994}, language = {en} } @article{JacobsJarkePohletal.1993, author = {Jacobs, Stephan and Jarke, Matthias and Pohl, Klaus and Bubenko, Janis}, title = {Requirements Engineering : An Integrated View of Representations, Process, and Domain / Jarke, Matthias ; Pohl, Klaus ; Jacobs, Stephan ; Bubenko, Janis ...}, series = {Software engineering : 4th European Software Engineering Conference Garmisch-Partenkirchen, Germany, September 13 - 17, 1993 ; proceedings / ESEC '93. Ian Sommerville ... (eds.)}, journal = {Software engineering : 4th European Software Engineering Conference Garmisch-Partenkirchen, Germany, September 13 - 17, 1993 ; proceedings / ESEC '93. Ian Sommerville ... (eds.)}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {3-540-57209-0}, pages = {100 -- 114}, year = {1993}, language = {en} } @article{Janz2002, author = {Janz, Norbert}, title = {Outlier Robust Estimation of an Euler Equation Investment Model with German Firm Level Panel Data}, series = {Contributions to modern econometrics : from data analysis to economic policy ; [dedicated to Gerd Hansen on the occasion of his 65th Birthday] / ed. by Ingo Klein and Stefan Mittnik}, journal = {Contributions to modern econometrics : from data analysis to economic policy ; [dedicated to Gerd Hansen on the occasion of his 65th Birthday] / ed. by Ingo Klein and Stefan Mittnik}, publisher = {Kluwer Academic Publ.}, address = {Dordrecht [u.a.]}, isbn = {1402073348}, pages = {87 -- 103}, year = {2002}, language = {en} }