TY - CHAP A1 - Schöpfer, Fabian A1 - Hopkins, Carl A1 - Mayr, Andreas R. A1 - Schanda, Ulrich T1 - Prediction of noise from machinery in timber-frame buildings using transmission functions T2 - Proceedings of ICSV24 KW - Körperschall KW - HolzLeichtBau KW - Holzmassivbau KW - Körperschallquellen KW - ZukunftBauUebertragung KW - Impulshammer Y1 - 2017 SN - 978-1-906913-27-4 ER - TY - CHAP A1 - Schöpfer, Fabian A1 - Hopkins, Carl A1 - Mayr, Andreas R. A1 - Schanda, Ulrich T1 - Ansätze zur Prognose des Installationspegels im Holz-Leichtbau T2 - Fortschritte der Akustik - DAGA KW - Körperschall KW - HolzLeichtBau KW - Holzmassivbau KW - Körperschallquellen KW - ZukunftBauUebertragung KW - Impulshammer Y1 - 2017 SN - 978-3-939296-12-6 ER - TY - CHAP A1 - Schöpfer, Fabian T1 - Körperschallübertragung im Holzbau: Übertragungsfunktionen T2 - 8. HolzBauSpezial KW - Körperschall KW - HolzLeichtBau KW - Körperschallquellen KW - Koerperschall KW - ZukunftBauUebertragung Y1 - 2017 ER - TY - RPRT A1 - Schanda, Ulrich A1 - Mayr, Andreas R. A1 - Schöpfer, Fabian T1 - FHprofUnt 2012: Nachhaltiger Schallschutz gebäudetechnischer Anlagen in energetisch optimierten Gebäuden: Teilprojekt 2: Schlussbericht Y1 - 2017 ER - TY - CHAP A1 - Hummel, Sabine A1 - Karlinger, Peter A1 - Schemme, Michael T1 - Haftungsuntersuchungen für Leichtbauanwendungen T2 - Technomer 2017 N2 - Die Verstärkung von Spritzgussteilen mit Faserhalbzeugen gewinnt immer mehr an Bedeutung. Für die Einsatztauglichkeit derartiger Bauteile ist die Verbundhaftung zwischen den angespritzten Strukturen und den Faserhalbzeugen essentiell. Der Vortrag befasst sich mit den äußeren und prozesstechnischen Einflüssen zu Erhöhung der Verbundhaftung auf Faserhalbzeugen. Zudem wird ein Einblick in die Prüf und Anlagentechnik in diesem Bereich gegeben. KW - Verbundhaftung KW - Organoblech KW - Thermoplast KW - Funktionalisierung KW - Einflussfaktoren KW - Hybridbauteil KW - Stukturbauteil Y1 - 2017 SN - 978-3-939382-13-3 SP - 1 EP - 11 PB - Technische Universität Chemnitz CY - Chemnitz ER - TY - JOUR A1 - Lienland, Bernhard A1 - Zeng, Li A1 - Mayrock, Michael A1 - Kellner, Florian T1 - Operations Research im Controlling JF - Controlling: Zeitschrift für erfolgsorientierte Unternehmenssteuerung Y1 - 2017 U6 - https://doi.org/10.15358/0935-0381-2017-2 VL - 29 IS - 2 SP - 55 EP - 57 ER - TY - JOUR A1 - Kellner, Florian A1 - Otto, Andreas A1 - Brabänder, Christian T1 - Bringing infrastructure into pricing in road freight transportation ? A measuring concept based on navigation service data JF - Transportation Research Procedia N2 - Differences in road infrastructure, such as capacity, congestion, speed limits affect the productivity and the costs of short-distance freight operations. This article introduces a novel methodology that is based on navigation service data to measure the effects in terms of cost per kilometer using navigation and shipment data. The methodology is applied to five terminals of a forwarding cooperation and has been able to document significant differences in cost per kilometer across the terminals. The research results can be used by logistics service providers to better understand how productivity and thus profitability is affected by the quality of the transportation infrastructure in the particular areas they operate in. Furthermore, the insights will help these companies for better, i.e. cost-based pricing and will allow to document why and where prices need to be adapted. KW - Traffic congestion; Road freight transportation; Logistics service provider; Navigation service; Short-distance freight transportation Y1 - 2017 U6 - https://doi.org/10.1016/j.trpro.2017.05.458 VL - 25 SP - 794 EP - 805 ER - TY - CHAP A1 - Kellner, Florian A1 - Lukesch, Maximilian ED - Pradel, Uwe-H. ED - Süssenguth, Wolfram ED - Piontek, Jochem ED - Schwolgin, Armin F. T1 - Logistik nachhaltig gestalten: Die Bestimmung von CO2-Emissionen im Straßengütertransport T2 - Praxishandbuch Logistik: Erfolgreiche Logistik in Industrie, Handel und Dienstleistungsunternehmen KW - Logistik KW - Grüne Logistik KW - Treibhausgase Y1 - 2017 PB - Fachverlag Deutscher Wirtschaftsdienst CY - Köln ER - TY - JOUR A1 - Igl, Johannes A1 - Kellner, Florian T1 - Exploring greenhouse gas reduction opportunities for retailers in Fast Moving Consumer Goods distribution networks JF - Transportation Research Part D: Transport and Environment N2 - This research explores logistics-related leverages in the responsibility of retailers for improving the environmental performance of a Fast Moving Consumer Goods (FMCG) distribution network. We examine opportunities for modifying the network carbon footprint by changing network design variables. To do so, a quantitative distribution network model is established, and 150 scenarios are calculated by modifying real-world shipment data from an existing multinational FMCG manufacturer. Four distribution variables are identified for a many-to-many and a hub-and-spoke network structure. Two variables affect the distribution network and two interfere in the shipment structure by manipulating weight and/or the delivery date. This research sheds light on the extent of the changes in greenhouse gas (GHG) emissions of the distribution network that result from modifications in the logistics variables. The greatest effect on the quantity of GHG emissions can be observed when an anticipation horizon for orders is introduced. When shipments are consolidated and delivered only weekly or biweekly from the manufacturer to the retailers, GHG emissions drop significantly. Another opportunity for retailers to cut down GHG emissions is based on the concept of minimum order quantities where shipments to a retailer location are bundled until a certain weight is reached. Additionally, total GHG emissions of distribution may be reduced by raising the tonnage limit, thereby triggering direct shipments between the manufacturer’s facilities and the retailer locations, or by raising the tonnage limit, which triggers direct shipments in the logistics service provider network. The extent of GHG reduction is assessed for all investigated variables. KW - Greenhouse gas (GHG)/CO2 network analysis; Network carbon footprint; Fast Moving Consumer Goods (FMCG); Distribution network analysis; Retailer; Distribution logistics Y1 - 2017 U6 - https://doi.org/10.1016/j.trd.2016.10.008 VL - 50 SP - 55 EP - 69 ER - TY - CHAP A1 - Kellner, Florian T1 - Supplier portfolio optimization T2 - Ipsera Conference Hungary 2017 Y1 - 2017 ER - TY - CHAP A1 - Kellner, Florian T1 - Multi-objective supplier portfolio configuration under supply risk and sustainability considerations T2 - International Conference on Operations Research (OR2017) Y1 - 2017 ER - TY - CHAP A1 - Kellner, Florian T1 - Visual decision support for the multi-objective supplier selection problem T2 - International Conference on Multiple Objective Programming and Goal Programming (MOPGP) Y1 - 2017 ER - TY - JOUR A1 - Kellner, Florian A1 - Christina Goerk, Anna A1 - Lienland, Bernhard T1 - Mit CO₂-Kennzahlen die Ökobilanz verbessern JF - Controlling & Management Review Y1 - 2017 U6 - https://doi.org/10.1007/s12176-017-0118-z VL - 61 IS - 9 SP - 58 EP - 64 ER - TY - GEN A1 - Muscat, Dirk A1 - Voit, Johann A1 - Hefenbrock, Sophia T1 - Patentschrift DE102015014912B4 BT - Beschichtung für ein medizinisches Instrument, Verfahren zu dessen Beschichten und mit diesem Verfahren beschichtetes medizinisches Instrument N2 - Beschichtung für ein medizinisches In­strument, das nach seinem Einführen in einen menschlichen oder tierischen Körper mit dessen Körperflüssigkeit in Kon­takt gelangt, umfassend eine Materialzusammensetzung, die wenigstens ein Phosphorylcholin umfassendes Polymer enthält, dadurch gekennzeichnet, dass die Materialzusam­mensetzung für ein medizinisches Instrument, das auf sei­ner Oberfläche Polyurethan enthält oder das daraus gänzlich besteht, eine auf das medizinische Instrument aufbringba­re Haftungsvernetzungsschicht aus einem chemischen Haft­vermittler und einem mit diesem vernetzten Alkohol, min­destens einem zweiwertigen Alkohol mit zwei primären OH­Gruppen, und das wenigstens eine Phosphorylcholin um­fassende Polymer enthält, welches auf der Haftungsvernet­zungsschicht als gesonderte Schicht aufgebracht sowie auf dieser und gegebenenfalls mit dieser vernetzt ist. KW - Beschichtung Y1 - 2021 ER - TY - CHAP A1 - Bäuml, Karl-Heinz T. A1 - Aslan, Alp A1 - Abel, Magdalena ED - Ross, Brian H. T1 - Chapter Five - The Two Faces of Selective Memory Retrieval—Cognitive, Developmental, and Social Processes T2 - Psychology of Learning and Motivation N2 - Numerous studies from the past five decades have shown that selective retrieval of some studied items can impair recall of other items. This chapter reviews more recent work, in which it is demonstrated that selective memory retrieval has two faces and that it can both impair and improve recall of other items. In this recent work, participants' access to study context during selective retrieval was experimentally manipulated and it was examined whether such manipulation influences the effects of selective retrieval. Access to study context was manipulated using listwise directed forgetting, context-dependent forgetting and time-dependent forgetting. The results consistently showed that selective retrieval impairs recall of other memories if access to study context during retrieval is largely maintained, but that selective retrieval can improve recall if study context access is impaired. The findings are explained by a two-factor account, which claims that, in general, selective retrieval does not only trigger inhibition and blocking but also triggers context reactivation processes. The proposal is that primarily inhibition and blocking operate when study context access during selective retrieval is largely maintained, whereas primarily context reactivation processes operate when study context access is impaired. Current findings on the two faces of selective retrieval are well consistent with this theoretical view. KW - Blocking KW - Context reactivation KW - Episodic memory KW - Inhibition KW - Memory development KW - Retrieval-induced facilitation KW - Retrieval-induced forgetting KW - Social recall Y1 - 2021 UR - https://doi.org/10.1016/bs.plm.2016.11.004 SP - 167 EP - 209 PB - Academic Press CY - London, Oxford, Boston, New York, San Diego ER - TY - JOUR A1 - Frank, Ludwig T1 - The Binomial and Negative Binomial Distribution in Discrete Time Markov Chains JF - Markov Processes And Related Fields N2 - The classical results of the binomial and negative binomial probability distribution are generalized by means of homogeneous Discrete Time Markov Chains to series of stochastically independent random trials. These have not only two possible outcomes but two groups of them -- different kinds of successes and failures with occurrence probabilities depending on the outcome of the previous trial. This generalization allows a uniform view of occupation time, first passage time and recurrence time. Our results are consequently derived and presented in matrix form, the probabilities as well as the moments. They can be applied to all Discrete Time Markov Chains, especially in computer capacity planning, performability and economics. KW - discrete time Markov Chains KW - binomial distribution KW - matrix representation KW - recurrence time KW - first passage time KW - occupation time Y1 - 2017 VL - 23 IS - 3 SP - 377 EP - 400 ER - TY - JOUR A1 - Maderebner, R. A1 - Gerhaher, U. A1 - Flach, M. A1 - Hirschmüller, Sebastian T1 - Load carrying capacity of screwed CLT wall-ceiling joints with and without elastic supports JF - BAUINGENIEUR N2 - Due to the application of elastic interlayers for acoustic decoupling, wood screws to connect timber elements are stressed beneath axial and shear loads additionally by a bending moment. The equations to calculate the load carrying capacity of wood-wood-connections according to the Eurocode 5, lose their validity in case of application of interlayers with low shear resistance. Furthermore, the increasing flexibilities of the joints should be considered for a realistic static modelling. Aim of the present work is to analyze the mechanical load bearing characteristics of wall-ceiling-connections of cross laminated timber with and without elastic interlayers. On the basis of experiments as well as analytical approaches, the load-deformation-behavior is discussed and contrasted to the current standards. KW - Timber Y1 - 2017 VL - 92 SP - 495 EP - 502 ER - TY - JOUR A1 - Filippoupolitis, M. A1 - Hopkins, C. A1 - Völtl, R. A1 - Schanda, Ulrich A1 - Mahn, J. A1 - Krajči, L. T1 - Structural dynamics of a dowelled-joist timber floor in the low-frequency range modelled using finite element simulation JF - Engineering Structures N2 - This paper concerns the development and validation of Finite Element Methods (FEM) to simulate the dynamic response of a dowelled-joist timber floor. This is a solid floor comprised of timber joists connected using timber dowels with individual assemblies connected using inclined metal screws. The focus is on the structural dynamics in the low-frequency range up to 200 Hz which is the relevant range for impact sound insulation and vibration serviceability. Dowel connections between the joists that formed each assembly were modelled using either rigid or spring connectors in the FEM models. The validation against experimental modal analysis showed that both approaches were valid in terms of the eigenfrequencies, Modal Assurance Criterion (MAC) and the spatial-average velocity with point excitation. Whilst the FEM model with spring connectors had a higher number of correlated modes in the MAC analysis, this required removal of many spurious modes before predicting the response. The validated models were used to demonstrate the potential in predicting assessment parameters for vibration serviceability that are contained in EN 1995-1-1 (Eurocode 5). This predictive approach to the evaluation of vibration serviceability has the advantage in that it can be used for non-standard timber floors with non-standard boundary conditions or floor plans. KW - Timber floor KW - Dowel connections KW - Vibration KW - Modal analysis KW - Vibration serviceability KW - Eurocode 5 Y1 - 2017 UR - https://doi.org/10.1016/j.engstruct.2017.07.009 VL - 148 SP - 602 EP - 620 ER - TY - CHAP A1 - Stubenrauch, Franz A1 - Seliger, Norbert A1 - Schmitt-Landsiedel, Doris T1 - Design and Performance of a 200 kHz GaN Motor Inverter with Sine Wave Filter T2 - PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nürnberg N2 - Gallium Nitride (GaN) semiconductor devices are promised to be a good alternative to Silicon (Si) semiconductors in future motor inverters for variable frequency drives (VFDs). They combine low on state resistance and low switching losses with a high blocking voltage capability. Compared to actual inverters based on insulated gate bipolar transistors (IGBTs) the pulse width modulation (PWM) frequency for efficient operation can be increased by a factor of 5 to 10, extending the PWM frequency range up to 500 kHz. This allows the use of motor filters with small component size. As a result, high motor efficiency, low torque ripple, high control bandwidth and nearly ideal sinusoidal output voltages are achieved. Therefore this inverters can be used for high speed spindle motors and dynamic servo drives. This paper focus on the design of a hybrid sine wave filter consisting of an analog and a digital part. The filter is optimized to achieve low power loss and high current control bandwidth. A 3-phase GaN motor inverter operating at 200 kHz PWM frequency at 400 V DC-link voltage verifies the system design. KW - motor inverter Y1 - 2020 ER - TY - CHAP A1 - Seliger, Norbert A1 - Stubenrauch, Franz A1 - Brendel, Christian A1 - Schmitt-Landsiedel, Doris T1 - Impact of Circuit Carrier Technologies on MHz-switching of GaN Half-Bridge Circuits T2 - PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy, Nürnberg N2 - Increasing the switching frequency has been one of the most beneficial advancements in modern power electronics. This trend has been enabled by progress in power semiconductors resulting in increased power densities, efficiencies and control dynamics. The aim of this study is to analyze the influence of three different circuit carrier technologies on switching power loss of 650 V hardswitching GaN devices. Limitations and solutions for half-bridge circuits operating at MHz-switching are investigated by modeling and experiments on a prototype. KW - GaN KW - Half-Bridge KW - MHz-switching KW - Substrate carrier technology Y1 - 2020 SP - 1407 EP - 1415 ER -