TY - CHAP A1 - Hallas, Martin A1 - Hinrichsen, Volker A1 - Neumann, Claus A1 - Tenzer, Michael A1 - Hausmann, Bruno A1 - Gross, Detlev A1 - Neidhart, Thomas A1 - Lerch, Maximilian A1 - Wiesinger, Doris T1 - Cigré Prototype Installation Test for Gas-Insulated DC Systems - Testing a Gas-Insulated DC Transmission Line (DC-GIL) for ±550 kV and 5000 A under Real Service Conditions T2 - 2020 CIGRE Session, CIGRE e-Session 48: Paris, France (virtual), 24.08.-03.09.2020 N2 - More and more generation facilities are installed far away from the load centers. Thus, long distance transmission is demanded, and with this regard DC transmission systems are of special interest. Transmission by overhead lines is a well-proven technology, but due to environmental concern and political decisions underground transmission systems are often requested. Besides DC cables, DC GIL are an interesting option. They enable transmitting high power by only one system in a small corridor only a few meters wide. GIL can be laid in a tunnel or directly buried in the soil. Meanwhile a lot of service experience has been collected with AC GIL technology, but no service experience is yet available with DC GIL. To close this knowledge gap and to investigate the long-term performance, a ±550 kV DC GIL prototype with a current carrying capacity of 5000 A is currently investigated in a HVDC test facility, both in directly buried and in above-ground installation. The test procedure follows the recommendations for long-term testing of gas-insulated systems, currently under preparation by Cigré JWG D1/B3.57. This report describes the test sample arrangements, the high-voltage and high current test equipment and the commissioning procedure for the DC GIL. It illustrates the UHF PD monitoring system installed and the method to identify possible PD defects. The investigated DC GIL is subdivided into two parts: While an above-ground installation is simultaneously stressed by voltage and DC current, a directly buried part of the DC GIL is stressed with DC current only in order to investigate soil mechanics, the temperature distribution in the GIL and in the soil as well as the performance of the backfill material. The report also presents first results gained on the directly buried arrangement for studying the soil mechanics. Y1 - 2022 U6 - https://doi.org/10.26083/tuprints-00014132 PB - CIGRE CY - Darmstadt ER - TY - JOUR A1 - Haug, Sonja T1 - Interethnische Freundschaftsbeziehungen und Partnerschaften als Indikator der sozialen Integration JF - Diskurs Kindheits- und Jugendforschung N2 - Der Beitrag befasst sich mit interethnischen Beziehungen als Indikator der sozialen Integration. Theoretischer Ansatzpunkt für die Erklärung der Freundes- und Partnerwahl sind Gelegenheitsstrukturen, Ressourcenausstattung und ethnische Präferenzen. Datenbasis ist der Integrationssurvey des Bundesinstituts für Bevölkerungsforschung, eine Befragung von 18- 30-Jährigen mit deutscher, italienischer und türkischer Abstammung sowie das Sozio-ökonomische Panel. Mit Methoden der Netzwerkanalyse werden interethnische Freundschaften und die ethnische Homogenität der Freundesnetzwerke untersucht. Generell haben Italienischstämmige häufiger als Türkischstämmige deutsche Freunde. Deutsch-Italiener haben häufiger Freundschaftsbeziehungen zu Deutschen als Deutsch-Türken; sie weisen ein hohes aufnahmelandspezifisches soziales Kapital und ein hohes Ausmaß sozialer Integration auf. Die Untersuchung der Partnerschaften zeigt, dass anhand der zunehmenden deutsch-türkischen Eheschließungen die interethnische Partnerwahl überschätzt wird. Im Gegensatz zu Deutsch-Italienern erweist sich die Partnerwahl von Türken und Deutsch-Türken in der Regel als intraethnisch. Eine Erklärung für Unterschiede zwischen Deutsch-Italienern und Deutsch-Türken könnte der intergenerationale Ressourcentransfer sein. KW - Integration KW - soziale Netzwerke KW - Freundschaft KW - Partnerschaft KW - Migranten Y1 - 2006 UR - https://www.budrich-journals.de/index.php/diskurs/article/view/66/53 SN - 2193-9713 VL - 1 IS - 1 SP - 75 EP - 91 PB - Budrich CY - Leverkusen ER - TY - JOUR A1 - Strasser, Artur A1 - Westner, Markus A1 - Strahringer, Susanne T1 - Knowledge transfer in IS offshoring BT - A Delphi study of the offshore coordinator role JF - Journal of Systems and Information Technology N2 - Purpose This paper aims to investigate the main tasks, necessary skills, and the implementation of the offshore coordinator’s role to facilitate knowledge transfer in information systems (IS) offshoring. Design/methodology/approach This empirical exploratory study uses the classical Delphi method that includes one qualitative and two quantitative rounds to collect data on IS experts’ perceptions to seek a consensus among them. Findings The participants agreed, with strong consensus, for a set of 16 tasks and 15 skills. The tasks focused primarily on relationship management and facilitating knowledge transfer on different levels. The set of skills consists of approximately 25 per cent “hard” skills, e.g. professional language skills and project management skills, and approximately 75 per cent “soft” skills, e.g. interpersonal and communication skills and the ability to deal with conflict. Two factors mainly influence implementing the offshore coordinator role: project size and the number of projects to be supported simultaneously. Practical implications The findings provide indications of how to define and fulfill this crucial role in practice to facilitate the knowledge transfer process in a positive way. Originality/value Similarities in previous research findings are aggregated to examine the intermediate role in detail from a consolidated perspective. This results in the first comprehensive set of critical tasks and skills assigned to the competency dimensions of the universal competency framework, demonstrating which and how many competency dimensions are critical. KW - Knowledge transfer KW - Delphi KW - IS offshoring KW - Offshoring coordinator KW - universal competency framework KW - Betriebliches Informationssystem KW - Offshoring KW - DV-Koordinator KW - Wissensmanagement Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-294 UR - https://doi.org/10.1108/JSIT-01-2018-0008 SN - 1328-7265 VL - 21 IS - 1 SP - 36 EP - 62 ER -