TY - BOOK
AB - n the multi-volume work on "Theory of Production", the production models and processes born today from practice are to be derived for the first time on a mathematically justified basis and thus also given the production economy a scientific basis. A constructivist point of view is to be set aside for “we just organized our company that way and it has proven itself”, and so the many descriptive “factory management teachings” are to be replaced. Volume 1 contains the basics of logic, set theory and algebra. The production-relevant conceptions of systems theory are for the first time completely mapped to constructs of formal logic, propositional and predicate logic consistently presented using examples. The predicate logic strikes the bow to the NC program; all parameters of a machining production are derived explicitly. An application example of the set-theoretical concepts is the computer-aided design, the relational calculus is mapped, for example, to product structures, replacement parts and identical parts. The basics of algebra deal in detail with the algebraic systems with internal connections that are important for engineering. Rotating tool magazines are mentioned here as an example. Algebraic systems with external links deal in particular with the handling of matrices. The basics of classifying, ordering and measuring conclude this volume. The basics of algebra deal in detail with the algebraic systems with internal connections that are important for engineering. Rotating tool magazines are mentioned here as an example. Algebraic systems with external links deal in particular with the handling of matrices. The basics of classifying, ordering and measuring complete this volume. The basics of algebra deal in detail with the algebraic systems with internal connections that are important for engineering. Rotating tool magazines are mentioned here as an example. Algebraic systems with external links deal in particular with the handling of matrices. The basics of classifying, ordering and measuring conclude this volume.
AU - Dangelmaier, Wilhelm
ID - 25251
TI - Production theory 1
ER -
TY - BOOK
AB - In the multi-volume work on "Theory of Production", the production models and processes born today from practice are to be derived for the first time on a mathematically justified basis and thus also given the production economy a scientific basis. A constructivist point of view is to be set aside for “we just organized our company that way and it has proven itself”, and so the many descriptive “factory management teachings” are to be replaced. Volume 2 deals with the structures of production. Based on the newly interpreted construct of the “production point”, larger units are composed step by step: single-stage and multi-stage technical quantities. In addition, the production point integrates the subdivision used today in business administration into the object-oriented, activity favoring black box thinking and the functionalist view of consumption and production functions. The conceptual foundations are mainly algebraic input-output systems. Based on the structuring and parameterization options at the production point, alternative organizational concepts for single and multi-level productions are developed. For the engineering sciences, a detailed treatise on the evaluation of production success is particularly important in this volume, which systematically leads to product calculation and the planning of an economically successful production program. Based on the structuring and parameterization options at the production point, alternative organizational concepts for single and multi-level productions are developed. Particularly important for the engineering sciences is a detailed treatise in this volume on the evaluation of production success, which systematically leads to product calculation and the planning of an economically successful production program. Based on the structuring and parameterization options at the production point, alternative organizational concepts for single and multi-level productions are developed. For the engineering sciences, a detailed treatise on the evaluation of production success is particularly important in this volume, which systematically leads to product calculation and the planning of an economically successful production program.
AU - Dangelmaier, Wilhelm
ID - 25252
TI - Production theory 2
ER -
TY - BOOK
AB - In the multi-volume work on "Theory of Production", the production models and processes born today from practice are to be derived for the first time on a mathematically justified basis and thus also given the production economy a scientific basis. A constructivist point of view is to be set aside for “we just organized our company that way and it has proven itself”, and so the many descriptive “factory management teachings” are to be replaced. Volume 3 deals with production processes in time. Ordinal and cardinal amounts of time lead to the system-theoretical definition of a process at the point of production and the possible understandings of processes and states. A main point here is the derivation of the common thinking in series production in terms of performance figures. Starting from the basic form of a time-based production, efficient dynamic events and processes are prepared. This creates the basis for the representation of the state of a general time system and the use of sequential machines. Time-invariant time systems and stochastic productions are the basis of robust production. The point of production and the time system find an ideal symbiosis in the use of finite automatons: A finite number of states together with a limited amount of inputs leads to state-driven production - one of the essential prerequisites for the realization of Industry 4.0. This creates the basis for the representation of the state of a general time system and the use of sequential machines. Time-invariant time systems and stochastic productions are the basis of robust production. The point of production and the time system find an ideal symbiosis in the use of finite automatons: A finite number of states together with a limited amount of inputs leads to state-driven production - one of the essential prerequisites for the realization of Industry 4.0. This creates the basis for the representation of the state of a general time system and the use of sequential machines. Time-invariant time systems and stochastic productions are the basis of robust production. The point of production and the time system find an ideal symbiosis in the use of finite automata: A finite number of states together with a limited number of inputs leads to state-driven production - one of the essential prerequisites for the realization of Industry 4.0.
AU - Dangelmaier, Wilhelm
ID - 25253
TI - Production theory 3
ER -
TY - BOOK
AU - Helmke, Stefan
AU - Uebel, Matthias
AU - Dangelmaier, Wilhelm
ID - 25254
TI - Effektives Customer Relationship Management
ER -
TY - JOUR
AU - Büngeler, Anne
AU - Hämisch, Benjamin
AU - Huber, Klaus
AU - Bremser, Wolfgang
AU - Strube, Oliver I.
ID - 25306
JF - Langmuir
SN - 0743-7463
TI - Insight into the Final Step of the Supramolecular Buildup of Eumelanin
ER -
TY - JOUR
AU - Reichinger, M.
AU - Bremser, Wolfgang
AU - Dornbusch, M.
ID - 25307
JF - Electrochimica Acta
SN - 0013-4686
TI - Interface and volume transport on technical cataphoretic painting: A comparison of steel, hot-dip galvanised steel and aluminium alloy
ER -
TY - CONF
AU - Moritzer, Elmar
AU - Budde, Christopher
AU - Hüttner, Matthias
AU - Krassmann, Dimitri
ID - 25578
TI - Entwicklung einer neuartigen Fügetechnik für Organoblech-Hybridverbindungen
ER -
TY - CHAP
AU - Backe-Neuwald, Dorothea
AU - Berkemeier, Martin
AU - Büker, Petra
ED - Greiten, Sylvia
ED - Geber, Georg
ED - Gruhn, Annika
ED - Köninger, Manuela
ID - 19514
T2 - Lehrerausbildung für Inklusion – Fragen und Konzepte zur Hochschulentwicklung“. Tagungsband zum Siegener Kongress „LehrerInnenbildung für Inklusion
TI - Inklusion vom Kind aus denken: Einsatzmöglichkeiten des Vielfaltstableaus im bildungswissenschaftlichen und fachdidaktischen Lehramtsstudium
ER -
TY - CHAP
AU - Bührmann, Thorsten
AU - Büker, Petra
AU - Höke, Julia
ID - 19515
T2 - Profession und Disziplin - Grundschulpädagogik im Diskurs. Jahrbuch Grundschulforschung. Band 22.
TI - Wir sind jetzt alle Lernbegleiter“ – Nivellierungstendenzen in der multiprofessionellen Teamarbeit im Übergang Kita-Grundschule
VL - 22
ER -
TY - GEN
AU - Büker, Petra
ID - 19516
T2 - Zeitschrift für Grundschulforschung
TI - Heike Deckert-Peaceman und Gerold Scholz: Vom Kind zum Schüler. Diskurs-Praxis-Formationen zum Schulanfang und ihre Bedeutung für die Theorie der Grundschule.
VL - 10 Jg. H.1
ER -
TY - JOUR
AU - Höke, Julia
AU - Bührmann, Thorsten
AU - Büker, Petra
AU - Hummel, Rebecca
AU - Meser, Kapriel
AU - Miller, Susanne
AU - Stölner, Robert
ID - 19525
JF - Zeitschrift für Grundschulforschung
TI - Bildungshäuser als "Dritter Raum" im Übergang zwischen Kita und Grundschule - Kritische Blicke auf ein Jahrzehnt Intensivkooperation
VL - H. 1
ER -
TY - THES
AU - Li, Shouwei
ID - 19604
TI - Parallel fixed parameter tractable problems
ER -
TY - CONF
AU - Ditter, Jan
AU - Wünsche, Marc
AU - Meschut, Gerson
AU - Wibbeke, Tim Michael
ID - 19759
TI - Mechanical properties of repair welded joints for automobile body structures
ER -
TY - JOUR
AU - Meschut, Gerson
AU - Ernstberger, Ludmila
AU - Ditter, Jan
ID - 19760
IS - 9
JF - Schweißen und Schneiden
TI - Anforderungsgerechte Analyse instationärer Zustände bei der Verarbeitung von Zweikomponentenklebstoff
VL - 69
ER -
TY - CONF
AB - Angegebener Monat: Dezember 2017
AU - Büker, Petra
ID - 19779
TI - Bildungshäuser als interinstitutionelle Bildungsräume für Kinder und pädagogische Fachkräfte. Wie können Kinder, Fachkräfte und die Übergangsgestaltung von Kooperationen in Bildungshäusern profitieren? Keynote an der Netzwerktagung "Qualität vor Ort", einer Gemeinschaftsaktion der Deutschen Kinder- und Jugendstiftung (DKJS), des Bundesministeriums für Familie, Senioren, Frauen und Jugend (BMFSFJ) und der Jacobs Foundation zur Stärkung frühkindlicher Bildung. Bildungshaus Hahle / Stade
ER -
TY - CONF
AB - Februar und November 2017
AU - Büker, Petra
ID - 19780
TI - Inklusion vom Kind aus denken. Die neue Study-Edition für die Aus- und Weiterbildung von pädagogischen Fach- und Lehrkräften. Öffentliche Workshoptagung für Akteure aus Wissenschaft und Praxis. Universität Paderborn
ER -
TY - CONF
AB - September 2017
AU - Büker, Petra
ID - 19781
TI - Partizipation von Kindergarten- und Grundschulkindern an Übergangsgestaltung, Übergangsforschung und am Transfer in optimierte Praxis. Erfahrungen aus einer Kinderbefragungsstudie im Rahmen des Modellprojekts "buddY". Beitrag im Rahmen des Symposiums: Perspektiven des Transfers von Forschungsbefunden im Übergang Kindergarten - Grundschule an der 26. Jahrestagung der Kommission Grundschulforschung und Pädagogik der Primarstufe an der Universität Landau
ER -
TY - CONF
AB - August 2017
AU - Büker, Petra
AU - Hüpping, Birgit
ID - 19783
TI - Immigrant Children as ‘Experts’ of their Culture?! Addressing cultural diversity in kindergarten and primary education: children’s and teacher’s perspectives. Symposiumsbeitrag im Rahmen der 27 th EECERA conference - European Early Childhood Research Association. Universität Bologna, Italien
ER -
TY - CONF
AB - Juli 2017
AU - Büker, Petra
ID - 19786
TI - Kinder stärken für das Aufwachsen in pluralen Lebenswelten. Keynote an der Schulanfangstagung des Instituts für Qualitätsentwicklung an Schulen Schleswig Holsteins (IQSH): Von Anfang an: Kinder stärken – Vielfältigkeit leben. Kiel
ER -
TY - CONF
AB - In Kooperation mit dem Bildungsbüro Kind und Ko Paderborn sowie dem Jugendamt der Stadt Detmold.
Juni 2017
AU - Büker, Petra
ID - 19787
TI - Kita und Grundschule auf dem Weg zur Partnerschaft: Was macht die Qualität der Kooperation aus? Einführungsvortrag im Rahmen der Auftaktveranstaltung zur Eröffnung des Weiterbildungsprogramms für pädagogische Fach- und Lehrkräfte zur Qualitätsentwicklung im Übergang mit dem Paderborner Qualitätsstern. In Kooperation mit dem Bildungsbüro Kind und Ko Paderborn sowie dem Jugendamt der Stadt Detmold
ER -
TY - CONF
AB - März 2017
AU - Büker, Petra
ID - 19788
TI - Forschen – Irritieren – Reflektieren: Das Paderborner Zentrum für KinderBildungsForschung (KiBi-Z) unterstützt Studierende beim Lernen in der Praxis. Symposiumsbeitrag im Rahmen des 2. Internationalen Kongresses "Lernen in der Praxis - Professionalisierungsprozesse im Kontext schulpraktischer Studien in der Lehrerbildung" an der Ruhr-Universität Bochum
ER -
TY - CONF
AU - Meyer, Sebastian
AU - Meschut, Gerson
AU - Behrens, Bernd-Arno
AU - Hübner, Sven
AU - Neumann, Andre
ID - 20134
TI - Einbringen von Funktionselementen bei der Warmumformung von 22MnB5
ER -
TY - JOUR
AU - Folgar, Ribadas H.
AU - Böddeker, T.
AU - Chergui, A.
AU - Ivanjko, Martin
AU - Gili, F.
AU - Behrens, S.
ID - 20288
JF - Procedia Structural Integrity
TI - Joining TWIP-Steel Simulation Models
ER -
TY - CONF
AU - Böddeker, Tobias
AU - Ivanjko, Martin
AU - Chergui, Azeddine
AU - Gili, Flavia
AU - Behrens, Sabine
AU - Runkel, Dirk
AU - Mašek, Martin
ID - 20291
T2 - 7. Fügetechnisches Gemeinschaftskolloquium
TI - JoiningTWIP – TWIP-steels for multi material design in automotive industry using low heat joining technologies II
ER -
TY - CONF
AU - Günter, Heinrich
AU - Janzen, Vitalij
AU - Meschut, Gerson
ID - 20296
T2 - Tagungsband zum 7. Fügetechnischen Gemeinschaftskolloquium
TI - Vorlochfreies Fügen stahlintensiver Leichtbaustrukturen durch vorkonfektioniertes und selbststanzendes Widerstandselementschweißen
ER -
TY - GEN
AU - Kundisch, Dennis
ID - 2801
TI - Developing and Using an Audience Response System
VL - 60 (2)
ER -
TY - CONF
AU - Bloh, Bea
AU - van Ophuysen, Stefanie
AU - Behrmann, Lars
AU - Homt, Martina
AU - Schürer, Sina
ID - 28022
TI - „Ich kann das Forschungsgedöns ja doch gebrauchen!“ – Zur Konzeption und Evaluation der Lehrveranstaltungen im Praxissemester an der WWU Münster
ER -
TY - GEN
AU - Bodden, Eric
AU - Dressler, Falko
AU - Meyer auf der Heide, Friedhelm
AU - Scheytt, Christoph
AU - Trächtler, Ansgar
ID - 28231
SN - 978-3-942647-88-5
TI - Intelligente technische Systeme
VL - 369
ER -
TY - THES
AU - Kühn, Arnon Theodor
ID - 28232
SN - 978-3-942647-89-2
TI - Systematik zur Release-Planung intelligenter technischer Systeme
VL - 370
ER -
TY - JOUR
AU - Grimminger-Seidensticker, Elke
AU - Möhwald, Aiko Julia
ID - 28345
IS - 5
JF - Physical Education and Sport Pedagogy
SN - 1740-8989
TI - Intercultural education in physical education: results of a quasi-experimental intervention study with secondary school students
VL - 22
ER -
TY - JOUR
AB - This article explores the interplay between learners’ linguistic and personal objectives as well as evaluations of their achievements in study-abroad contexts, an area that has thus far remained widely unexplored given the prevalence of product-oriented, outcomes-based research. The study draws on the case of one Canadian student of German who studied abroad at a German university for one year. To adopt an emic perspective, the data gained from a learning history questionnaire, semi-structured interviews, and e-journals were analyzed and interpreted within the framework of narrative analysis. The results show not only that learners’ sojourn objectives may be complex, dynamic, and contradictory in nature but also that they need to be examined beyond their face value, as they are entangled with learners’ negotiations of desirable subject positions and attempts to integrate their sojourn experiences, successes, and frustrations in a coherent and positive life narrative.
AU - Müller, Mareike
ID - 28348
IS - 1
JF - The Canadian Modern Language Review
KW - individual differences
KW - learner beliefs
KW - narrative analysis
KW - sojourn objectives and evaluations
KW - study abroad
SN - 0008-4506
TI - “As a person, I feel I’ve changed pretty immensely”: Sojourners’ aspirations and self-perceived achievements
VL - 73
ER -
TY - JOUR
AB - This paper discusses the findings of an empirical study that explores the relationship between study-abroad experiences, learner identity, and pronunciation. We argue that the role of pronunciation as a personal domain of
meaning-making warrants more attention than it has hitherto received. To this end, we investigate the narratives of Canadian learners, studying abroad in Germany, in relation to discourses of language learning, culture, and identity,
using a Critical Discourse Analysis approach. Our data, which we gained from semi-structured interviews and e-journals, shows that learners’ perceptions of pronunciation are closely linked to their views of the native-speaker ideal, impacting their self-constructions and interpretations of learning experience. In conclusion, we argue for a more differentiated understanding of pronunciation and its implications for language teaching and study abroad.
AU - Müller, Mareike
AU - Schmenk, Barbara
ID - 28354
IS - 1
JF - International Journal of Applied Linguistics
KW - learner identity
KW - study abroad
KW - pronunciation
KW - native-speaker ideal
KW - critical discourse analysis
SN - 0802-6106
TI - Narrating the sound of self: The role of pronunciation in learners’ self-constructions in study-abroad contexts
VL - 27
ER -
TY - GEN
AU - Gausemeier, Jürgen
ID - 28359
SN - 978-3-942647-93-9
TI - Vorausschau und Technologieplanung. 13. Symposium für Vorausschau und Technologieplanung, Heinz Nixdorf Institut, 23. und 24. November 2017
VL - 374
ER -
TY - CHAP
AU - Homt, Martina
AU - van Ophuysen, Stefanie
ED - Pilypaityte, Lina
ED - Siller, Hans-Stefan
ID - 28420
T2 - Schulpraktische Lehrerprofessionalisierung als Ort der Zusammenarbeit
TI - Gelingensbedingungen für den Aufbau einer forschenden Grundhaltung im Praxissemester – eine qualitative vergleichende Fallstudie
ER -
TY - CONF
AU - Homt, Martina
AU - van Ophuysen, Stefanie
ID - 28430
TI - Forschendes Lernen im Praxissemester – Der universitäre und schulische Kontext
ER -
TY - CONF
AU - Homt, Martina
ID - 28431
TI - Gelingensbedingungen für den Aufbau einer forschenden Grundhaltung im Praxissemester – eine qualitative vergleichende Fallstudie
ER -
TY - CONF
AU - Markarian, Christine
ID - 2851
T2 - International Conference on Operations Research (OR)
TI - Leasing with Uncertainty
ER -
TY - JOUR
AB - Taxi ridesharing1 (TRS) is an advanced form of urban transportation that matches separate ride requests with similar spatio-temporal characteristics to a jointly used taxi. As collaborative consumption, TRS saves customers money, enables taxi companies to economize use of their resources, and lowers greenhouse gas emissions. We develop a one-to-one TRS approach that matches rides with similar start and end points. We evaluate our approach by analyzing an open dataset of > 5 million taxi trajectories in New York City. Our empirical analysis reveals that the proposed approach matches up to 48.34% of all taxi rides, saving 2,892,036 km of travel distance, 231,362.89 l of gas, and 532,134.64 kg of CO2 emissions per week. Compared to many-to-many TRS approaches, our approach is competitive, simpler to implement and operate, and poses less rigid assumptions on data availability and customer acceptance.
AU - Barann, Benjamin
AU - Beverungen, Daniel
AU - Müller, Oliver
ID - 2856
JF - Decision Support Systems
KW - Taxi ridesharing Collaborative consumption Transportation Open data Sustainability Shared mobility
TI - An open-data approach for quantifying the potential of taxi ridesharing
ER -
TY - CONF
AB - Although many methods have been proposed for engineering services and customer solutions, most of these approaches give little consideration to recombinant service innovation. In an age of smart products and
smart data, we can, however, expect that many of future service innovations need to be based on adding, transferring, dissociating, and associating existing value propositions. The purpose of this paper is to outline what properties constitute recombinant service innovation and to identify if current service engineering approaches fulfill
these properties. Based on a conceptual in-depth analysis of 24 service engineering methods, we identify that most methods focus on designing value propositions instead of service systems, view service independent of physical goods, are linear or iterative, and incompletely address the mechanisms of recombinant innovation. We discuss how these deficiencies can be remedied and propose a first conceptual model of a revised se
rvice system engineering approach.
AU - Beverungen, Daniel
AU - Lüttenberg, Hedda
AU - Wolf, Verena
ED - Leimeister, Jan Marco
ED - Brenner, Walter
ID - 2860
KW - Service engineering
KW - recombinant innovation
KW - (product - )service system
KW - literature analysis
KW - new service development
T2 - Proceedings der 13. Internationalen Tagung Wirtschaftsinformatik (WI 2017)
TI - Recombinant Service System Engineering
ER -
TY - JOUR
AU - Eickelmann, Birgit
AU - Drossel, Kerstin
ID - 28624
JF - Dreizehn – Zeitschrift für Jugendsozialarbeit
TI - Digitale Bildung – eine neue Perspektive auf Bildungsgerechtigkeit?
VL - 18
ER -
TY - CHAP
AU - Gerick, Julia
AU - Eickelmann, Birgit
AU - Bos, Wilfried
ED - Heinzel, Friederike
ED - Koch, Katja
ID - 28626
T2 - Individualisierung im Grundschulunterricht: Anspruch, Realisierung und Risiken
TI - Zum Stellenwert neuer Technologien für die individuelle Förderung im Deutschunterricht in der Grundschule
VL - 21
ER -
TY - JOUR
AU - Eickelmann, Birgit
ID - 28627
IS - 1
JF - Tertium Comparationis. Journal für International und Interkulturell Vergleichende Erziehungswissenschaft
TI - Computational Thinking als internationales Zusatzmodul zu ICILS 2018 – Konzeptionierung und Perspektiven für die empirische Bildungsforschung
VL - 23
ER -
TY - JOUR
AU - Eickelmann, Birgit
ID - 28628
IS - 14
JF - Neue Deutsche Schule. Die Zeitschrift der Bildungsgewerkschaft
TI - Digitalisierung. Neue Herausforderungen für Schulen und Schulaufsicht
VL - 9
ER -
TY - JOUR
AU - Eickelmann, Birgit
ID - 28629
IS - 5
JF - Zeitschrift Schul-Management
TI - Digitale Kompetenzen im internationalen Vergleich. Welche Impulse geben die Studien ICILS 2013 und ICILS 2018?
VL - 48
ER -
TY - JOUR
AU - Eickelmann, Birgit
ID - 28630
IS - 79
JF - Basisartikel im Heft 'Digitalisierung in der Schule'. Lernende Schule
TI - Lernende Schulen in der digitalen Welt – Herausforderungen und Perspektiven
VL - 20
ER -
TY - BOOK
AU - Eickelmann, Birgit
ID - 28631
TI - Kompetenzen in der digitalen Welt. Konzepte und Perspektiven
ER -
TY - CHAP
AU - Eickelmann, Birgit
AU - Gerick, Julia
ED - Scheiter, Katharina
ED - Riecke-Baulecke, Thomas
ID - 28633
T2 - Lehren und Lernen mit digitalen Medien. Strategien, internationale Trends und pädagogische Orientierungen
TI - Lehren und Lernen mit digitalen Medien - Zielsetzungen, Rahmenbedingungen und Implikationen für die Schulentwicklung
VL - 4
ER -
TY - CHAP
AU - Eickelmann, Birgit
ED - Nixdorf MuseumsForum, Heinz
ID - 28650
T2 - Bildung im Digitalen Zeitalter - Bilanz und Perspektiven
TI - Computer Literacy im schulischen Kontext – eine internationale Perspektive
ER -
TY - JOUR
AU - Eickelmann, Birgit
AU - Drossel, Kerstin
ID - 28651
JF - Medienimpulse
TI - Computer- und informationsbezogene Kompetenzen in der IEA-Studie ICILS 2013 und der Zusammenhang mit der Lesekompetenz
VL - 4
ER -
TY - DATA
AU - Gerick, Julia
AU - Eickelmann, Birgit
ID - 28652
TI - Abschlussbericht im Rahmen der wissenschaftlichen Begleitung der Evaluation des Projekts „Lernen mit digitalen Medien“ in Schleswig-Holstein
ER -
TY - JOUR
AU - Gerick, Julia
AU - Eickelmann, Birgit
AU - Rolff, Hans-Günter
ID - 28653
IS - 3
JF - Journal für Schulentwicklung
TI - Digitale Medien in Schule und Unterricht – Herausforderungen für die Schulentwicklung
VL - 21
ER -
TY - JOUR
AU - Gerick, Julia
AU - Eickelmann, Birgit
AU - Ramm, Gesa
AU - Kühn, Thore-Olaf
ID - 28655
IS - 3
JF - Journal für Schulentwicklung
TI - Gelingensbedingungen für den Transfer schulischer Innovationen mit digitalen Medien. Ergebnisse aus einem Modellprojekt
VL - 21
ER -
TY - JOUR
AU - Eickelmann, Birgit
ID - 28656
IS - 3
JF - Journal für Schulentwicklung
TI - Schulische Medienkonzepte als Instrument der Schulentwicklung
VL - 21
ER -
TY - GEN
ED - Gerick, Julia
ED - Eickelmann, Birgit
ED - Kühn, Thore-Olaf
ID - 28658
T2 - Journal für Schulentwicklung
TI - Digitale Medien in Schule und Unterricht. Herausforderungen für die Schulentwicklung [Themenheft]
ER -
TY - CHAP
AU - Eickelmann, Birgit
AU - Lorenz, Ramona
AU - Endberg, Manuela
ED - Lorenz, Ramona
ED - Bos, Wilfried
ED - Endberg, Manuela
ED - Eickelmann, Birgit
ED - Grafe, Silke
ED - Vahrenhold, Jan
ID - 28659
T2 - Schule digital – der Länderindikator 2017. Schulische Medienbildung in der Sekundarstufe I mit besonderem Fokus auf MINT-Fächer im Bundesländervergleich und Trends von 2015 bis 2017
TI - Lernaktivitäten mit digitalen Medien im Fachunterricht der Sekundarstufe I im Bundesländervergleich mit besonderem Fokus auf MINT-Fächer
ER -
TY - CHAP
AU - Lorenz, Ramona
AU - Endberg, Manuela
AU - Eickelmann, Birgit
ED - Lorenz, Ramona
ED - Bos, Wilfried
ED - Endberg, Manuela
ED - Eickelmann, Birgit
ED - Grafe, Silke
ED - Vahrenhold, Jan
ID - 28663
T2 - Schule digital – der Länderindikator 2017. Schulische Medienbildung in der Sekundarstufe I mit besonderem Fokus auf MINT-Fächer im Bundesländervergleich und Trends von 2015 bis 2017
TI - Unterrichtliche Nutzung digitaler Medien durch Lehrpersonen in der Sekundarstufe I im Bundesländervergleich und im Trend von 2015 bis 2017
ER -
TY - BOOK
ED - Lorenz, Ramona
ED - Bos, Wilfried
ED - Endberg, Manuela
ED - Eickelmann, Birgit
ED - Grafe, Silke
ED - Vahrenhold, Jan
ID - 28665
TI - Schule digital – der Länderindikator 2017. Schulische Medienbildung in der Sekundarstufe I mit besonderem Fokus auf MINT-Fächer im Bundesländervergleich und Trends von 2015 bis 2017
ER -
TY - JOUR
AU - Gerick, Julia
AU - Eickelmann, Birgit
AU - Bos, Wilfried
ID - 28669
IS - 1
JF - Large-scale Assessments in Education
SN - 2196-0739
TI - School-level predictors for the use of ICT in schools and students’ CIL in international comparison
VL - 5
ER -
TY - JOUR
AU - Drossel, Kerstin
AU - Eickelmann, Birgit
AU - Gerick, Julia
ID - 28670
IS - 2
JF - Education and Information Technologies
SN - 1360-2357
TI - Predictors of teachers’ use of ICT in school – the relevance of school characteristics, teachers’ attitudes and teacher collaboration
VL - 22
ER -
TY - JOUR
AU - Eickelmann, Birgit
AU - Gerick, Julia
AU - Koop, Christian
ID - 28671
IS - 4
JF - Education and Information Technologies
SN - 1360-2357
TI - ICT use in mathematics lessons and the mathematics achievement of secondary school students by international comparison: Which role do school level factors play?
VL - 22
ER -
TY - JOUR
AB - In the debate on the integration of information and communication technologies (ICT) into schools, the beliefs and attitudes of teachers towards ICT in teaching and learning have always been regarded as central criteria for successful implementation of new technologies. In this context, a study in 2013 by the International Association for the Evaluation of Educational Achievement, IEA, provided insights into teachers’ beliefs regarding ICT and showed that perceptions of the pedagogical advantages of technologies differ between countries. With regard to this finding, this paper seeks to determine whether there is a typology of teachers with different attitudes towards the potential of ICTs for learning. This question is addressed by conducting latent class analyses on a sample of teacher data from three European countries – the Czech Republic, Germany and Norway. Furthermore, the paper investigates how the use of computers by teachers varies between the groups to which these teachers can be assigned. In doing so the research reported at hand connects, arguably for the first time, representative data on teacher typologies of attitudes towards and beliefs about ICT in teaching and learning with data on computer use in schools.
AU - Eickelmann, Birgit
AU - Vennemann, Mario
ID - 28672
IS - 6
JF - European Educational Research Journal
SN - 1474-9041
TI - Teachers‘ attitudes and beliefs regarding ICT in teaching and learning in European countries
VL - 16
ER -
TY - JOUR
AB - The International Computer and Information Literacy Study (ICILS 2013) provides, for the first time, information about students’ computer and information literacy (CIL), as well as its acquisition, based on a computer-based test for students and background questionnaires. Among the 21 education systems that participated in ICILS 2013, there are 12 European countries, making secondary comparative in-depth analyses at a European level particularly fruitful. Accordingly, while the four articles in this Special Issue each deal with different topics and adopt different methodologies, they all share a common element and provide European comparisons in the ICILS context. The editorial in turn outlines the aim of the ICILS 2013 study and its relevance for European education research as well as its contextual framework and approach to the measurement of students’ CIL. The potential and challenges of such large-scale assessment studies are also discussed.
AU - Gerick, Julia
AU - Eickelmann, Birgit
AU - Bos, Wilfried
ID - 28673
IS - 6
JF - European Educational Research Journal
SN - 1474-9041
TI - The international computer and information literacy study from a European perspective: Introduction to the Special Issue
VL - 16
ER -
TY - CHAP
AU - Drossel, Kerstin
AU - Eickelmann, Birgit
ED - Tatnall, Arthur
ED - Webb, Mary
ID - 28675
SN - 1868-4238
T2 - Tomorrow's learning: involving everyone. Learning with and about technologies and computing
TI - The Use of Tablets in Secondary Schools and Its Relationship with Computer Literacy
ER -
TY - CHAP
AU - Eickelmann, Birgit
ED - Gapski, Harald
ED - Oberle, Monika
ED - Staufer, Walter
ID - 28676
T2 - Medienkompetenz. Herausforderung für Politik, politische Bildung und Medienbildung
TI - Schulische Medienkompetenzförderung
ER -
TY - JOUR
AU - Wiesener, Markus
AU - Peters, K.
AU - Taube, Alexander
AU - Keller, Adrian
AU - Hoyer, Kay-Peter
AU - Niendorf, Thomas
AU - Grundmeier, Guido
ID - 24109
JF - Materials and Corrosion
SN - 0947-5117
TI - Corrosion properties of bioresorbable FeMn-Ag alloys prepared by selective laser melting
ER -
TY - CHAP
AU - Taube, Alexander
AU - Reschetnik, Wadim
AU - Pauli, Lorenz
AU - Hoyer, Kay-Peter
AU - Kullmer, Gunter
AU - Schaper, Mirko
ID - 24117
SN - 978-3-658-17779-9
T2 - Additive Fertigung von Bauteilen und Strukturen
TI - Numerische und mechanische Untersuchung additiv gefertigter TiAl6V4 Gitterstrukturen
ER -
TY - CONF
AU - Brüggemann, Jan-Peter
AU - Reschetnik, Wadim
AU - Kullmer, Gunter
AU - Richard, Hans Albert
AU - Aydinöz, Mehmet Esat
AU - Hoyer, Kay-Peter
AU - Schaper, Mirko
ID - 24119
T2 - DVM - Tagung - Bruchmechanische Werkstoff- Und Bauteilbewertung: Beanspruchungsanalyse, Prüfmethoden und Anwendungen
TI - Optimierung der Werkstoffeigenschaften von selektiv lasergeschmolzenem Alumi-nium 7075,
ER -
TY - JOUR
AU - Ramaswamy, Arunselvan
AU - Bhatnagar, Shalabh
ID - 24152
IS - 5
JF - IEEE Transactions on Automatic Control
TI - Analysis of gradient descent methods with nondiminishing bounded errors
VL - 63
ER -
TY - JOUR
AU - Ramaswamy, Arunselvan
AU - Bhatnagar, Shalabh
ID - 24153
IS - 3
JF - Mathematics of Operations Research
TI - A generalization of the Borkar-Meyn theorem for stochastic recursive inclusions
VL - 42
ER -
TY - CONF
AB - Wireless Sensor Networks (WSN) consist of large number of distributed sensors nodes which are able to sense,
read and transmit physical measurements such as temperature, humidity and pressure over wireless
communication links. WSN nodes are often powered by batteries or can use energy harvesting methods from
environmental energy sources. One of the major challenges in the design of WSN nodes is the high level of
power dissipation for sensing, processing and communication. Operating at low-power levels reduces
maintenance effort for periodic battery replacement or can even provide unlimited operation by means of energy
harvesting. Since the communication process is the most power hungry process, ultra-low-power wireless
communication is an enabler for network applications such as cyber-physical systems, Internet-of-Things and
Industry 4.0 etc. Our research is based on Wake-up Receivers (WuR) architectures. Each of the WSN nodes contains a WuR
which is always-on, listening for a wake-up signal from other nodes or the base station, and activating the node
only when a wake-up signal is detected. By this scheme the communication with the base station becomes
asynchronous, real-time and on-demand. Due to the centrally-coordinated, collision-free communication such
WSNs can be scaled to very large node numbers. Designing always-on WuR at ultra-low-power dissipation
levels makes the WSN nodes very energy efficient because they are only activated when a wake-up-signal is
received. Additionally, the WuR must be robust to noise and co-channel interference in order to operate safely
in parallel to other wireless systems. We investigate a novel radio architecture for the WuR using Linear Frequency Modulation (LFM) and passive
analog signal processing by means of a Surface Acoustic Wave (SAW) correlator. The base station sends the
required WSN node ID using LFM signal at 2.4 GHz. The node ID is encoded as chirp up or chirp down signal
with chirping bandwidth of 80MHz. On the receiver side, the SAW chirp correlator demodulates the received
LFM signal while suppressing other wireless signals. In order to achieve proper demodulation and high Signal-to-Noise Ratio (SNR), the SAW correlator is designed to behave like a Matched Filter (MF) which boosts up the
SNR. After that the signal is amplified/detected by baseband amplifier stage, it is compared with the unique ID
of the node, and the node's Wake up signal is asserted accordingly. Since the SAW correlator operates
completely passive, the WuR can be implemented in a very energy-efficient way, without the need to use power
hungry device such as Low Noise Amplifiers (LNA) or down conversion Local Oscillators (LO)
AU - Abughannam, Saed
AU - Scheytt, Christoph
ID - 24215
T2 - Kleinheubacher Tagung 2017
TI - Low-Power wake up receiver based on Surface Acoustic Wave Correlator
ER -
TY - JOUR
AB - In this article mixed analog/digital signal processing techniques based on parallel spread-spectrum sequencing (PSSS) and radio frequency (RF) carrier synchronization for ultra-broadband wireless communication are investigated on system and circuit level.
AU - Scheytt, Christoph
AU - Javed, Abdul Rehman
AU - Bammidi, Eswara Rao
AU - KrishneGowda, Karthik
AU - Kallfass, Ingmar
AU - Kraemer, Rolf
ID - 24216
IS - 9-10
JF - Frequenz* Journal of RF-Engineering and Telecommunications
TI - 100 Gbps Wireless System and Circuit Design Using Parallel Spread-Spectrum Sequencing
VL - 71
ER -
TY - CONF
AB - Parallel Sequence Spread Spectrum (PSSS) is a physical layer (PHY) baseband technology that is well suited for mixed-signal transceiver implementation for high data rate wireless communication systems. Mixed signal baseband realization allows for easier implementation of the channel equalization function and eliminates the need for high speed data converters. System design and architecture of a mixed signal baseband processor for 100 Gbps wireless communication is described that reduces the implementation complexity and results in a consequent reduction in power dissipation and chip area. An ultra-broadband analog correlator consisting of a four-quadrant multiplier and a fast resettable integrator using only NPN transistors was designed, fabricated, and measured. The correlator circuit is the core component of the receiver baseband. To the best knowledge of the authors, it is the fastest correlator circuit published so far.
AU - Javed, Abdul Rehman
AU - Scheytt, Christoph
AU - Karthik, KrishneGowda
AU - Kramer, Roland
ID - 24217
SN - 978-1-5090-3844-2
T2 - IEEE EUROCON 2017-17th International Conference on Smart Technologies
TI - System design of a mixed signal PSSS transdeiver using a linear ultra-broadband analog correlator for the receiver baseband designed in 130nm SiGe BiCMOS technology
ER -
TY - GEN
AB - Die Erfindung betrifft eine Folge-Halte-Schaltung zum Konvertieren eines analogen Eingangssignals in ein digitales Ausgangssignal mit einer Haltekapazitätseinheit, mit einer Spannungsverstärkereinheit enthaltend einen Eingang, an dem ein analoges Eingangsspannungssignal anlegbar ist, und enthaltend einen Ausgang, der mit der Haltekapazitätseinheit verbunden ist, mit einer Arbeitspunkteinstelleinheit zur Steuerung der Spannungsverstärkereinheit, wobei an einem Eingang der Arbeitspunkteinstelleinheit ein Steuersignal anliegt, so dass in einem Folgebetrieb der Folge-Halte-Schaltung eine an dem Ausgang der Spannungsverstärkereinheit anliegendes Ausgangssignal einen an den Eingang der Spannungsverstärkereinheit anliegendes Eingangssignal folgt, und in einem Haltebetrieb der Folge-Halte-Schaltung das Ausgangssignal der Spannungsverstärkereinheit konstant ist, mit einer Taktsignalquelle zur Erzeugung einer Folge von einem Eingang der Arbeitspunkteinstelleinheit anliegenden Taktsignalen, wobei die Arbeitspunkteinstelleinheit elektrooptische Mittel zur Erzeugung des Steuersignals aufweist, dass die Taktsignalquelle als eine optische Taktsignalquelle ausgebildet ist, so dass als Taktsignal eine optische Impulsfolge mit hohen und tiefen Taktsignalen an den Eingang der Arbeitspunkteinstelleinheit anliegt.
AU - Scheytt, Christoph
ID - 24218
TI - Folge-Halte-Schaltung
ER -
TY - CONF
AB - In this paper we present theoretical, simulated and measured data for a reader to tag communication RFID system at 5.8 GHz. First a theoretical link budget analysis for a reader to tag architecture is shown for a wireless industrial application at 1m distance. This includes a power budget of the passively powered transponder. The received power level of the backscattered data for the theoretical link budget is -52:5 dBm. For the first setup slot antennas are developed and measured in the anechoic chamber. The measured gain is 4.0 dB. The power of the backscatter data in setup 1 is -74:8 dBm. This corresponds to the theoretical link budget since, all losses such as cable or lower antenna gain are taken into account. Setup 2 is upgraded on the reader side with horn antennas. At 5.8 GHz, the gain reaches the value of 10.8 dB. The second setup shows improvement in the receiving backscattered power to a value of -62:4 dBm. Furthermore, as a solution to detect those transponders not presented in the main slope of the antenna, a steerable beam is introduced by means of a Rotman lens. On the topic of the passive transponder, different harvesting topologies at 5.8 GHz are investigated, and the efficiency simulation of the harvesting circuitry has been performed. The simulated efficiency of the implemented technique is 68 %.
AU - Kuhn, Peter
AU - Haddadian, Sanaz
AU - Meyer, Frederic
AU - Hoffmann, Marc
AU - Grabmaier, Anton
AU - Scheytt, Christoph
AU - Kaiser, Thomas
ID - 24219
SN - 978-3-8007-4428-2
T2 - Smart SysTech 2017; European Conference on Smart Objects, Systems and Technologies
TI - SHF RFID System for Automatic Process Optimization with Intelligent Tools
ER -
TY - CONF
AU - Adelt, Peer
AU - Koppelmann, Bastian
AU - Müller, Wolfgang
AU - Mueller-Gritschneder, Daniel
AU - Kleinjohann, Bernd
AU - Scheytt, Christoph
ID - 24220
SN - 978-3-942647-88-5
T2 - Tagungsband des Wissenschaftsforums Intelligente Technische Systeme
TI - Automatisierte Fehlerinjektion zur Entwicklung sicherer Mikrocontrolleranwendungen auf der Basis virtueller Plattformen
ER -
TY - BOOK
AB - Das Wissenschaftsforum Intelligente Technische Systeme (WInTeSys) legt am 11. und 12. Mai 2017 in Paderborn den Schwerpunkt auf die Grundlagen und die Entwicklung intelligenter technischer Systeme im Kontext Industrie 4.0. Etwa 40 begutachtete hochkarätige Beiträge geben einen Überblick über Forschungsfelder, Technologien und Anwendungen. Die Veranstaltung bietet den Teilnehmerinnen und Teilnehmern eine ausgezeichnete Bühne für den Erfahrungsaustausch auf dem Weg in die Digitalisierung von Produkten und Produktionssystemen. »Das Besondere ist der Dialog von Hochschulforschung und industrieller Entwicklung, also das Aufeinandertreffen von »Science-Push« und »Application-Pull«. Die Beiträge spiegeln die hervorragende Vernetzung in der Region OWL und darüber hinaus wider«, sagt Veranstalter Prof. Jürgen Gausemeier (Heinz Nixdorf Institut, Universität Paderborn).
AU - Gausemeier, Jürgen
AU - Bodden, Eric
AU - Dressler, Falko
AU - Dumitrescu, Roman
AU - Meyer auf der Heide, Friedhelm
AU - Scheytt, Christoph
AU - Trächtler, Ansgar
ID - 24221
SN - 978-3-942647-88-5
TI - Wissenschaftsforum Intelligente Technische Systeme (WInTeSys)
VL - 369
ER -
TY - CONF
AB - This paper focuses on the design of a high
efficiency cross-connected differential drive rectifier for
next-generation passive RFID tags. To provide a
realistic estimation of the transponders’power and
efficiency requirements at 5.8 GHz, detailed
link/power-budget analysis for various blocks of the tag
chip is carried out. From link budget analysis realistic
RF power levels are obtained and a rectifier with high
conversion efficiency at low power levels is designed.
Simulations based on a commercial 65nm CMOS
technology investigate the suitability of the harvesting
circuit for 5.8 GHz RFID tags.
AU - Haddadian, Sanaz
AU - Scheytt, Christoph
AU - Kramer, Roland
ID - 24222
T2 - ANALOG 2017; 16th ITG/GMM-Symposium
TI - Energy Harvesting Analysis for Next Generation Passive RFID Tags
ER -
TY - CONF
AB - This paper presents the design flow of using
sampling technique for fault injection on sche-
matic level. The parameters used in the docu-
ment to calculate the likelihood could be modi-
fied by using more realistic data from the fab.
With the help of the fault simulator, the whole
design flow of the fault effect simulation can be
realized automatically.
AU - Wu, Liang
AU - Abughannam, Saed
AU - Müller, Wolfgang
AU - Scheytt, Christoph
AU - Ecker, Wolfgang
ID - 24223
T2 - 2nd Workshop on Resiliency in Embedded Electronic Systems (REES)
TI - SPICE-Level Fault Injection with Likelihood Weighted Random Sampling - A Case Study
ER -
TY - CONF
AU - Adelt, Peer
AU - Koppelmann, Bastian
AU - Müller, Wolfgang
AU - Kleinjohann, Bernd
AU - Scheytt, Christoph
ID - 24224
T2 - Design Automation and Testing in Europe (DATE), University Booth Interactive Presentation
TI - ANALISA - A Tool for Static Instruction Set Analysis
ER -
TY - CONF
AU - Adelt, Peer
AU - Koppelmann, Bastian
AU - Müller, Wolfgang
AU - Kleinjohann, Bernd
AU - Scheytt, Christoph
ID - 24225
T2 - 2nd Workshop on Resiliency in Embedded Electronic Systems (REES)
TI - An Automatic Injection Framework for Safety Assessements of Embedded Software Binaries
ER -
TY - JOUR
AB - This work describes an electrical interferometer for contactless permittivity measurements working at 120 GHz. It was fabricated in a 130 nm SiGe process featuring an ft and fmax of 240 and 330 GHz. The on-chip system contains a 120 GHz VCO with a tuning range of 7 GHz featuring a divide-by-64 circuit to enable external PLL operation. The subsequent buffer provides 7 dBm of output power at 120 GHz. Additionally, the IC contains high-precision and high-resolution phase shifters based on a slow-wave transmission line approach with digital control for direct readout ability. A 120 GHz LNA with 17 dB gain and a power detector to provide DC output signals were realized on chip. It enables sample emulation capability by phase shift inducement in the measurement as well as a reference transmission line. In terms of phase detection, the system shows a sensitivity of 907.36 MHz/°.
AU - Wessel, Jan
AU - Schmalz, Klaus
AU - Scheytt, Christoph
AU - Kissinger, Dietmar
ID - 24227
IS - 2
JF - IEEE Microwave and Wireless Components Letters
TI - A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out
VL - 27
ER -
TY - JOUR
AU - Krebs, Benjamin
AU - Wehner, Marius
AU - Kabst, Rüdiger
ID - 24378
JF - Personalmagazin
TI - Wer hat hier das Sagen?
VL - 2
ER -
TY - JOUR
AU - Krebs, Benjamin
AU - Wehner, Marius
AU - Kabst, Rüdiger
ID - 24379
JF - Personalmagazin
TI - Nordeuropa hat´s nicht nötig
VL - 2
ER -
TY - JOUR
AU - Rauterberg, Hannah
AU - Krebs, Benjamin
ID - 24380
JF - Personalführung
TI - Cranet Survey 2015/2016 - Stand der HR-Digitalisierung.
VL - 5
ER -
TY - CONF
AB - Through this study, we introduce the idea of applying scheduling techniques to allocate spatial resources that are shared among multiple robots moving in a static environment and having temporal constraints on the arrival time to destinations. To illustrate this idea, we present an exemplified algorithm that plans and assigns a motion path to each robot. The considered problem is particularly challenging because: (i) the robots share the same environment and thus the planner must take into account overlapping paths which cannot happen at the same time; (ii) there are time deadlines thus the planner must deal with temporal constraints; (iii) new requests arrive without a priori knowledge thus the planner must be able to add new paths online and adjust old plans; (iv) the robot motion is subject to noise thus the planner must be reactive to adapt to online changes. We showcase the functioning of the proposed algorithm through a set of agent-based simulations.
AU - Khaluf, Yara
AU - Markarian, Christine
AU - Simoens, Pieter
AU - Reina, Andreagiovanni
ID - 24398
SN - 0302-9743
T2 - International Conference on Practical Applications of Agents and Multi-Agent Systems (PAAMS 2017)
TI - Scheduling Access to Shared Space in Multi-robot Systems
ER -
TY - JOUR
AU - Moritzer, Elmar
AU - Hopp, Matthias
ID - 24523
JF - Welding in the World
SN - 0043-2288
TI - Bonding of wood-plastic composites (WPC)—material and surface modification for special applications
ER -
TY - CONF
AU - Moritzer, Elmar
AU - Hopp, Matthias
ID - 24529
T2 - 75th Annual Technical Conference of the Society of Plastics Engineers (ANTEC)
TI - Bonding of Plastic Parts with Dispersion Adhesives – Film Formation via Diffusion Processes
ER -
TY - JOUR
AU - Zimmermann, Steffen
AU - Herrmann, Philipp
AU - Kundisch, Dennis
AU - Nault, Barrie
ID - 2463
JF - Information Systems Research
TI - Decomposing the Variance of Consumer Ratings and the Impact on Price and Demand
ER -
TY - JOUR
AU - Philipp, Matthias
AU - Schumm, Gregor
AU - Peesel, Ron-Hendrik
AU - Walmsley, Timothy G.
AU - Atkins, Martin J.
AU - Schlosser, Florian
AU - Hesselbach, Jens
ID - 24636
JF - Energy
SN - 0360-5442
TI - Optimal energy supply structures for industrial food processing sites in different countries considering energy transitions
ER -
TY - JOUR
AU - Schumm, G.
AU - Philipp, M.
AU - Schlosser, Florian
AU - Hesselbach, J.
AU - Walmsley, T. G.
AU - Atkins, M. J.
ID - 24637
JF - Energy Efficiency
SN - 1570-646X
TI - Hybrid heating system for increased energy efficiency and flexible control of low temperature heat
ER -
TY - JOUR
AU - Kundisch, Dennis
AU - von Rechenberg, Tobias
ID - 2464
IS - 4
JF - Business & Information Systems Engineering
TI - Does the Framing of Progress Towards Virtual Rewards Matter? Empirical Evidence from an Online Community
VL - 59
ER -
TY - JOUR
AU - Meier, Christian
AU - Kundisch, Dennis
AU - Willeke, Jochen
ID - 2465
IS - 2
JF - Business & Information Systems Engineering
TI - Is it Worth the Effort? - A Decision Model to Evaluate Resource Interactions in IS Project Portfolios
VL - 59
ER -
TY - JOUR
AU - Matthias, Philipp
AU - Schlosser, Florian
AU - Hechelmann, Ron-Hendrik
AU - Schumm, Gregor
AU - Holzhammer, Uwe
ID - 24675
JF - BWK Energie-Fachmagazin
TI - Sektorkopplung Prozesswärme / Strom in der deutschen Industrie. Integration der erneuerbaren Energien in den Wärmesektor.
VL - 70
ER -
TY - GEN
ED - Moritzer, Elmar
ED - Budde, Christopher
ED - Hüttner, Matthias
ED - Krassmann, Dimitri
ID - 25739
TI - Entwicklung einer neuartigen Fügetechnik für Organoblech-Hybridverbindungen
ER -
TY - GEN
AU - Dolzhenko, Irina
AU - Rumlich, Dominik
ID - 25846
TI - Понять, как они тикают [Verstehen, wie sie ticken]. Interview on CLIL conducted by Ирина Долженко [Irina Dolzhenko] on behalf of sib.fm
ER -
TY - JOUR
AU - Stefszky, Michael
AU - Ricken, R.
AU - Eigner, Christof
AU - Quiring, V.
AU - Herrmann, Harald
AU - Silberhorn, Christine
ID - 26040
JF - Physical Review Applied
SN - 2331-7019
TI - Waveguide Cavity Resonator as a Source of Optical Squeezing
ER -
TY - JOUR
AU - Luo, Kai Hong
AU - Herrmann, Harald
AU - Silberhorn, Christine
ID - 26058
JF - Quantum Science and Technology
SN - 2058-9565
TI - Temporal correlations of spectrally narrowband photon pair sources
ER -
TY - JOUR
AU - Rütz, Helge
AU - Luo, Kai Hong
AU - Suche, Hubertus
AU - Silberhorn, Christine
ID - 26059
JF - Physical Review Applied
SN - 2331-7019
TI - Quantum Frequency Conversion between Infrared and Ultraviolet
ER -
TY - CHAP
AB - Selective Laser Sintering (SLS) is an Additive Manufacturing technology, which allows the production of functional polymer parts. Conventionally mainly Nylon 12 (PA 12), Polyamide 11 (PA 11), glass- or aluminum filled materials enable rapid prototyping during the product development process. Those materials do not always meet the requirements for direct production of functional parts by laser sintering. For Direct Manufacturing of functional parts out of required materials and in high quality, the laser sintering process and the material palette needs to be further developed. During this research a laser sintering test equipment for material qualification has been built up. The forthcomings are an optimized software solution, an innovative optical system, an alternative powder coating system and an improved temperature control. The functionality of the test equipment is proved with the standard material PA2200 and two new laser-sintering-materials, Nylon 6 (PA 6) and Polyamide 613 (PA 613), are investigated. The process parameters are derived and mechanical properties are determined by tensile tests.
AU - Lohn, Johannes
AU - Schmid, Hans-Joachim
ID - 26104
T2 - Rapid.Tech – International Trade Show & Conference for Additive Manufacturing
TI - Aufbau einer Lasersinter-Versuchsanlage und Verarbeitung neuer Materialien am Beispiel von Polyamid 6 und Polyamid 613
ER -
TY - JOUR
AB - We study the variation of the adhesion forces between wet TiO2 nanoparticles as a function of their size and the ambient relative humidity. Combining all-atom molecular dynamics and capillary simulations we demonstrate that the linear scaling of the interparticle forces with the particle diameter, well established for microscopic and macroscopic particles, can be extended down to diameters of a few nm. At this size scale, however, the molecular nature of the water adsorbates dictates the adhesion forces both via solvation effects and influencing parameters of analytical capillary models such as the equilibrium particle–particle separation distance and the water/particle contact angle. Moreover, the water surface tension becomes considerably larger than the macroscopic bulk value due to combined effects of thin-film confinement and tight curvature, in a way that strongly depends on humidity and particle size. Taking these effects into proper account, classical capillary equations can be used to predict the interparticle forces even of the smallest particles considered here (4 nm), although the circular approximation fails to reproduce the distance at which the water meniscus breaks. Finally, the transition between the dominating effects at the nanoscopic scale and conventional capillary theory valid at microscopic size scales can be only rationalized if the presence of roughness asperities on the surface of the large particles is explicitly taken into account.
AU - Laube, Jens
AU - Dörmann, Michael
AU - Schmid, Hans-Joachim
AU - Mädler, Lutz
AU - Colombi Ciacchi, Lucio
ID - 26106
JF - The Journal of Physical Chemistry C
SN - 1932-7447
TI - Dependencies of the Adhesion Forces between TiO2 Nanoparticles on Size and Ambient Humidity
ER -