TY - JOUR
AU - FitzGerald, Clare
AU - Fraser, Alec
AU - Kimmitt, Jonathan
AU - Knoll, Lisa
AU - Williams, James
ID - 45655
IS - 3
JF - International Public Management Journal
KW - Public Administration
KW - Business and International Management
SN - 1096-7494
TI - Outcomes-based contracting and public management reform: Lessons from a decade of experimentation
VL - 26
ER -
TY - CONF
AB - The nonlinear optical response of an ensemble of semiconductor quantum dots is analyzed by wave-mixing processes, where we focus on four-wave mixing with two incident pulses. Wave-mixing experiments are often described with semiclassical models, where the light is modeled classically and the material quantum mechanically. Here, however, we use a fully quantized model, where the light is given by a quantum state of light. Quantum light involves more degrees of freedom than classical light as e.g., its photon statistics and quantum correlations, which is a promising resource for quantum devices, such as quantum memories. The light-matter interaction is treated with a Jaynes-Cummings type model and the quantum field is given by a single mode since the quantum dots are embedded in a microcavity. We present numerical simulations of the four-wave-mixing response of a homogeneous system for pulse sequences and find a significant dependence of the result on the photon statistics of the incident pulses. The model constitutes a problem with a large state space which arises from the frequency distribution of the transition energies of the inhomogeneously broadened quantum dot ensemble that is coupled with a quantum light mode. Here we approximate the dynamics by summing over individual quantum dot-microcavity systems. Photon echoes arising from the excitation with different quantum states of light are simulated and compared.
AU - Rose, Hendrik
AU - Grisard, S.
AU - Trifonov, A. V.
AU - Reichhardt, R.
AU - Reichelt, Matthias
AU - Bayer, M.
AU - Akimov, I. A.
AU - Meier, Torsten
ID - 43192
T2 - Ultrafast Phenomena and Nanophotonics XXVII
TI - Theoretical analysis of four-wave mixing on semiconductor quantum dot ensembles with quantum light
VL - 12419
ER -
TY - CHAP
AU - Freymuth, Nina
ED - Balz, HHans-Jürgen
ED - Huneke, Annika
ED - Kuhlmann, Carola
ED - Römisch, Kathrin
ID - 45606
T2 - Diskriminierungsprozesse und Teilhabeperspektiven - Herausforderungen für die Praxis der Inklusion. Ausgewählte Master-Thesen 2018-2022 des Masterstudiengangs "Soziale Inklusion: Gesundheit und Bildung" der Evangelischen Hochschule Rheinland-Westfalen-Lippe
TI - Alternative für alle? Inklusionsspezifische Analyse der AfD und ihrer Wähler*innen
ER -
TY - CONF
AU - Badran, Abdalrhman
AU - Sadeghi-Kohan, Somayeh
AU - Reimer, Jan Dennis
AU - Hellebrand, Sybille
ID - 41875
T2 - 28th IEEE European Test Symposium (ETS'23), May 2023
TI - Approximate Computing: Balancing Performance, Power, Reliability, and Safety
ER -
TY - JOUR
AU - Dieter, Peter
AU - Caron, Matthew
AU - Schryen, Guido
ID - 44383
IS - 1
JF - European Journal of Operational Research (EJOR)
TI - Integrating driver behavior into last-mile delivery routing: Combining machine learning and optimization in a hybrid decision support framework
VL - 311
ER -
TY - GEN
AU - Frick, Bernd
AU - Spiess Bru, Clarissa
AU - Kaimann, Daniel
ID - 45666
TI - Are Women (Really) More Lenient? Gender Differences in Expert Evaluations
VL - 106
ER -
TY - GEN
AU - Kaimann, Daniel
AU - Spiess Bru, Clarissa
ID - 45665
TI - Sounds too Feminine? Brand Gender and The Impact on Professional Critics
VL - 107
ER -
TY - THES
AU - Beck-Werz, Lisa
ID - 45669
TI - Essays on Choices and Behavior in Competitive Situations
ER -
TY - JOUR
AU - Meier, Jana
AU - Janzen, Thomas
AU - Wotschel, Philipp
AU - Vogelsang, Christoph
ID - 45672
JF - die hochschullehre
TI - Rollenspielbasierte Simulationen als Übungs- und Prüfungsformate im Lehramtsstudium. Eine explorative Studie zu Erfahrungen und Einschätzungen aus Studierendensicht.
VL - 9
ER -
TY - JOUR
AU - Blachut, Alisa
AU - Topalović, Elvira
AU - Uhrig, Sissy
ID - 42329
JF - Der Deutschunterricht
TI - Grammatik in deutschen und niederländischen DaF-Lehrbüchern: Synergien für den Deutschunterricht
VL - 3
ER -
TY - BOOK
ED - Topalović, Elvira
ED - Blachut, Alisa
ID - 42328
TI - Grammatische Modelle. Themenschwerpunkt von "Der Deutschunterricht" 3/2023
ER -
TY - CONF
AU - Behler, Felix
ID - 45676
T2 - Narrative Ethics and Character in the Representation of the Past in Contemporary Fiction
TI - (Re-)inventing Biblical Traditions: The Representation of Pontius Pilate in Contemporary Historical Fiction
ER -
TY - BOOK
AU - Herding, Jana
AU - Carle, U.
ID - 45344
TI - Von der Grundschule in die Sekundarstufe. Übergänge ressourcenorientiert gestalten (Hrsg. von Petra Büker)
VL - 10
ER -
TY - JOUR
AU - Zdoupas, Philippos
AU - Laubenstein, Désirée
ID - 45324
IS - 3
JF - Social Sciences
TI - ‘I Feel Well, Accepted and Competent in School’—Determinants of Self-Perceived Inclusion and Academic Self-Concept in Students with Diagnosed Behavioral, Emotional and Social Difficulties (BESD)
VL - 12
ER -
TY - CONF
AU - Hotegni, Sedjro Salomon
AU - Mahabadi, Sepideh
AU - Vakilian, Ali
ID - 45695
KW - Fair range clustering
T2 - Proceedings of the 40th International Conference on Machine Learning, Honolulu, Hawaii, USA. PMLR 202, 2023.
TI - Approximation Algorithms for Fair Range Clustering
ER -
TY - CHAP
AU - Aghaei Abrandabadi, Seyed Ali
ED - Blecher, Joel
ED - Brinkmann, Stefanie
ID - 45696
T2 - Hadith Commentary: Continuity and Change
TI - The Hermeneutics of al-Sharīf al-Murtaḍā (d. 436/1044) in the Interpretation of Akhbār al-Āḥād in his Kitāb al-Amālī
ER -
TY - CONF
AU - Hebrok, Sven Niclas
AU - Nachtigall, Simon
AU - Maehren, Marcel
AU - Erinola, Nurullah
AU - Merget, Robert
AU - Somorovsky, Juraj
AU - Schwenk, Jörg
ID - 43060
T2 - 32nd USENIX Security Symposium
TI - We Really Need to Talk About Session Tickets: A Large-Scale Analysis of Cryptographic Dangers with TLS Session Tickets
ER -
TY - CHAP
AU - Dorogova, Elizaveta
ED - Oeming, Manfred
ED - Schmidt, Nora
ID - 45700
T2 - Hermeneutiken der Weisheit
TI - Weisheit und moralischer Intellektualismus im Koran aus intertextueller Perspektive
ER -
TY - CHAP
AU - Ghaffar, Zishan
ED - Wacker, Marie-Theres
ED - Bechmann, Ulrike
ED - Langer, Gerhard
ID - 45701
T2 - Prophetie in Tenach, Bibel und Qur'an
TI - Prophetologie – Eine Annäherung
ER -
TY - JOUR
AB - Faradaic reactions including charge transfer are often accompanied with diffusion limitation inside the bulk. Conductive two-dimensional frameworks (2D MOFs) with a fast ion transport can combine both - charge transfer and fast diffusion inside their porous structure. To study remaining diffusion limitations caused by particle morphology, different synthesis routes of Cu-2,3,6,7,10,11-hexahydroxytriphenylene (Cu3(HHTP)2), a copper-based 2D MOF, are used to obtain flake- and rod-like MOF particles. Both morphologies are systematically characterized and evaluated for redox-active Li+ ion storage. The redox mechanism is investigated by means of X-ray absorption spectroscopy, FTIR spectroscopy and in situ XRD. Both types are compared regarding kinetic properties for Li+ ion storage via cyclic voltammetry and impedance spectroscopy. A significant influence of particle morphology for 2D MOFs on kinetic aspects of electrochemical Li+ ion storage can be observed. This study opens the path for optimization of redox active porous structures to overcome diffusion limitations of Faradaic processes.
AU - Wrogemann, Jens Matthies
AU - Lüther, Marco Joes
AU - Bärmann, Peer
AU - Lounasvuori, Mailis
AU - Javed, Ali
AU - Tiemann, Michael
AU - Golnak, Ronny
AU - Xiao, Jie
AU - Petit, Tristan
AU - Placke, Tobias
AU - Winter, Martin
ID - 44116
IS - 26
JF - Angewandte Chemie International Edition
KW - General Chemistry
KW - Catalysis
SN - 1433-7851
TI - Overcoming Diffusion Limitation of Faradaic Processes: Property‐Performance Relationships of 2D Conductive Metal‐Organic Framework Cu3(HHTP)2 for Reversible Lithium‐Ion Storage
VL - 62
ER -
TY - JOUR
AB - Since high-order harmonic generation (HHG) from atoms depends sensitively on the polarization of the driving laser field, the polarization gating (PG) technique was developed and applied successfully to generate isolated attosecond pulses from atomic gases. The situation is, however, different in solid-state systems as it has been demonstrated that due to collisions with neighboring atomic cores of the crystal lattice strong HHG can be generated even by elliptically- and circularly-polarized laser fields. Here we apply PG to solid-state systems and find that the conventional PG technique is inefficient for the generation of isolated ultrashort harmonic pulse bursts. In contrast, we demonstrate that a polarization-skewed laser pulse is able to confine the harmonic emission to a time window of less than one-tenth of the laser cycle. This method provides a novel way to control HHG and to generate isolated attosecond pulses in solids.
AU - Song, Xiaohong
AU - Yang, Shidong
AU - Wang, Guifang
AU - Lin, Jianpeng
AU - Wang, Liang
AU - Meier, Torsten
AU - Yang, Weifeng
ID - 45704
IS - 12
JF - Optics Express
KW - Atomic and Molecular Physics
KW - and Optics
SN - 1094-4087
TI - Control of the electron dynamics in solid-state high harmonic generation on ultrafast time scales by a polarization-skewed laser pulse
VL - 31
ER -
TY - JOUR
AU - Zuo, Ruixin
AU - Song, Xiaohong
AU - Ben, Shuai
AU - Meier, Torsten
AU - Yang, Weifeng
ID - 45703
IS - 2
JF - Physical Review Research
KW - General Physics and Astronomy
SN - 2643-1564
TI - Revealing the nonadiabatic tunneling dynamics in solid-state high harmonic generation
VL - 5
ER -
TY - JOUR
AU - Belobo, D. Belobo
AU - Meier, Torsten
ID - 45709
JF - Results in Physics
KW - General Physics and Astronomy
SN - 2211-3797
TI - Manipulation of nonautonomous nonlinear wave solutions of the generalized coupled Gross–Pitaevskii equations with spin–orbit interaction and weak Raman couplings
ER -
TY - GEN
AB - We study analytic aspects of the Dunkl-type Hankel transform, which goes back
to Baker and Forrester and, in an earlier symmetrized version, to Macdonald.
Moreover, we introduce a Dunkl analogue of the Bessel function and K-Bessel
function generalizing those of a symmetric cone. Further, we take a look at
zeta integrals and their distributional extensions in the Dunkl setting. These
distributions are closely related to Dunkl-type Riesz distributions. Further,
we study regularity properties of the zeta distributions and prove a functional
equation relating zeta distributions and their Dunkl transform.
AU - Brennecken, Dominik
ID - 45707
T2 - arXiv:2303.15952
TI - Hankel transform, K-Bessel functions and zeta distributions in the Dunkl
setting
ER -
TY - BOOK
ED - Tatari, Muna
ED - Nassery, Idris
ID - 45705
TI - Dynamics of Tradition: Islamic Law and Theology in Relation
ER -
TY - CHAP
AB - The field of teaching technologies is in constant interplay between educational and industrial advances. Since the beginning of the twenty-first century, digitalization and automatization have become increasingly important. In industrial and social life, we see similar fast-moving developments. These factors challenge education, specifically vocational education, greatly, and raise two very different, yet very much connected questions: how to prepare students for their vocational lives and how to prepare teachers to communicate the necessary competencies to their students? This chapter provides an overview of advances, challenges, and possible solutions, focusing on the three key fields of vocational education in Germany: Industry 4.0, Education 4.0, and innovative teacher education. Most importantly, however, the text examines the continuous interplay between and among these fields. The beginning of the chapter is dedicated to vocational teacher education, in accordance with industrial and educational advances. Specifying this, characteristics of Industry 4.0, as well as students' and teachers' perceptions of Industry 4.0, are discussed. This is followed by an introduction to the concept of so-called learning factories as a possible way of integrating aspects of Industry 4.0 in German vocational schools. The end of the chapter is dedicated to the required changes in educational settings today and in the future. Though Industry 4.0, Education 4.0, and innovative teacher education are each widely discussed in the current literature, the interplay of all three fields reveals a research gap. This chapter tries to close this gap and provide an important contribution to the research field.
AU - Jonas-Ahrend, Gabriela
AU - Vernholz, Mats
AU - Temmen, Katrin
ED - Craig, Cheryl J.
ED - Mena, Juanjo
ED - Kane, Ruth G.
ID - 45552
SN - 1479-3687
T2 - Teacher Education in the Wake of Covid-19
TI - Teaching Technologies: Continuous Interplay Between Educational and Industrial Advances
VL - 41
ER -
TY - JOUR
AU - Schmolke, Tobias
AU - Brunner-Schwer, Christian
AU - Biegler, Max
AU - Rethmeier, Michael
AU - Meschut, Gerson
ID - 45663
IS - 3
JF - Journal of Manufacturing and Materials Processing
TI - On Welding of High-Strength Steels Using Laser Beam Welding and Resistance Spot Weld Bonding with Emphasis on Seam Leak Tightness
VL - 7
ER -
TY - CHAP
AU - Eckel, Julia
ED - Gerling, Winfried
ED - Möring, Sebastian
ED - de Mutiis, Marco
ID - 44461
T2 - Screen-Images. Screenshot, Screencast, In-Game Photography
TI - Screencasting: Documenting Processuality
ER -
TY - JOUR
AU - Häsel-Weide, Uta
ID - 45712
IS - 339
JF - Die Grundschulzeitschrift
TI - Inklusiver Mathematikunterricht. Mathematiklernen in Vielfalt von Kompetenzen, Wegen und Lernsituationen
ER -
TY - JOUR
AU - Graf, Lara Marie
AU - Wienhues, Inga
AU - Häsel-Weide, Uta
ID - 45713
IS - 339
JF - Die Grundschulzeitschrift
TI - Addition und Subtraktion verstehen
ER -
TY - CHAP
AU - Eckel, Julia
AU - Linseisen, Elisa
ED - Steinhoff, Heike
ID - 45716
T2 - Epidemics and Othering. The Biopolitics of COVID-19 in Historical and Cultural Perspectives
TI - The Virus Is Present, Presence Is Virulent: Being Co(m)present With Others in Times of Corona
ER -
TY - GEN
ED - Eckel, Julia
ED - Ernst, Christoph
ED - Schröter, Jens
ID - 36842
IS - 1
KW - tech demo
KW - technology demonstration
KW - demo or die
SN - 1619-1641
T2 - Navigationen - Zeitschrift für Medien- und Kulturwissenschaften
TI - Navigationen: Tech | Demo
VL - 23
ER -
TY - JOUR
AB - AbstractThree prominent low order implicit time integration schemes are the first order implicit Euler-method, the second order trapezoidal rule and the second order Ellsiepen method. Its advantages are stability and comparatively low computational cost, however, they require the solution of a nonlinear system of equations. This paper presents a general approach for the construction of third order Runge–Kutta methods by embedding the above mentioned implicit schemes into the class of ELDIRK-methods. These will be defined to have an Explicit Last stage in the general Butcher array of Diagonal Implicit Runge–Kutta (DIRK) methods, with the consequence, that no additional system of equations must be solved. The main results—valid also for non-linear ordinary differential equations—are as follows: Two extra function calculations are required in order to embed the implicit Euler-method and one extra function calculation is required for the trapezoidal-rule and the Ellsiepen method, in order to obtain the third order properties, respectively. Two numerical examples are concerned with a parachute with viscous damping and a two-dimensional laser beam simulation. Here, we verify the higher order convergence behaviours of the proposed new ELDIRK-methods, and its successful performances for asymptotically exact global error estimation of so-called reversed embedded RK-method are shown.
AU - Mahnken, Rolf
ID - 45757
JF - Computational Mechanics
KW - Applied Mathematics
KW - Computational Mathematics
KW - Computational Theory and Mathematics
KW - Mechanical Engineering
KW - Ocean Engineering
KW - Computational Mechanics
SN - 0178-7675
TI - Derivation of third order Runge–Kutta methods (ELDIRK) by embedding of lower order implicit time integration schemes for local and global error estimation
ER -
TY - CONF
AU - Abbas, Nilab
AU - Bauer, Anna Brigitte
AU - Reinhold, Peter
ED - van Vorst, Helena
ID - 45759
T2 - Lernen, Lehren und Forschen in einer digital geprägten Welt
TI - PSΦ: Entwicklung von Unterstützungsmaßnahmen für Theoretische Physik
ER -
TY - CONF
AU - Bauer, Anna Brigitte
AU - Reinhold, Peter
ED - van Vorst, Helena
ID - 45758
T2 - Lernen, Lehren und Forschen in einer digital geprägten Welt
TI - PSФ: Entwicklung einer abgestimmten Studieneingangsphase (Physik)
ER -
TY - JOUR
AB - Abstract
The development of potential theory heightens the understanding of fundamental interactions in quantum systems. In this paper, the bound state solution of the modified radial Klein-Gordon equation is presented for generalised tanh-shaped hyperbolic potential from the Nikiforov-Uvarov method. The resulting energy eigenvalues and corresponding radial wave functions are expressed in terms of the Jacobi polynomials for arbitrary $l$ states. It is also demonstrated that energy eigenvalues strongly correlate with potential parameters for quantum states. Considering particular cases, the generalised tanh-shaped hyperbolic potential and its derived energy eigenvalues exhibit good agreement with the reported findings. Furthermore, the rovibrational energies are calculated for three representative diatomic molecules, namely $\rm{H_{2}}$, $\rm{HCl}$ and $\rm{O_{2}}$. The lowest excitation energies are in perfect agreement with experimental results. Overall, the potential model is displayed to be a viable candidate for concurrently prescribing numerous quantum systems.
AU - Badalov, Vatan
AU - Badalov, Sabuhi
ID - 45763
JF - Communications in Theoretical Physics
KW - Physics and Astronomy (miscellaneous)
SN - 0253-6102
TI - Generalised tanh-shaped hyperbolic potential: Klein-Gordon equation's bound state solution
ER -
TY - GEN
AU - Simon-Mertens, Florian
ID - 45762
TI - Effizienzanalyse leichtgewichtiger Neuronaler Netze für FPGA-basierte Modulationsklassifikation
ER -
TY - JOUR
AB - A series of new organic donor–π–acceptor dyes incorporating a diquat moiety as a novel electron-acceptor unit have been synthesized and characterized. The analytical data were supported by DFT calculations. These dyes were explored in the aerobic thiocyanation of indoles and pyrroles. Here they showed a high photocatalytic activity under visible light, giving isolated yields of up to 97 %. In addition, the photocatalytic activity of standalone diquat and methyl viologen through formation of an electron donor acceptor complex is presented.
AU - Meier, Armin
AU - Badalov, Sabuhi
AU - Biktagirov, Timur
AU - Schmidt, Wolf Gero
AU - Wilhelm, René
ID - 43827
IS - 22
JF - Chemistry – A European Journal
KW - General Chemistry
KW - Catalysis
KW - Organic Chemistry
SN - 0947-6539
TI - Diquat Based Dyes: A New Class of Photoredox Catalysts and Their Use in Aerobic Thiocyanation
VL - 29
ER -
TY - CONF
AB - RISC-V has received worldwide acceptance in the industry and by the academic community. As of today, multiple
RISC-V applications and variants are under investigation for embedded IoT systems, from resource-limited single-core
processors up to multi-core systems for High-Performance Computing (HPC). Recently, the Grid of Processing Cells
(GPC) platform has been proposed as a scalable parallel grid-oriented network of processor cores with local memories.
This paper describes a prototype design of the GPC platform for hardware implementation at Register-Transfer Level
(RTL) based on modified RISC-V Rocket processors with scratchpad memories. It introduces a scalable Chisel-based
implementation of the modified Rocket cores with RTL generation and a functional test using Verilator simulation. This
work also includes the adaptation of the Chipyard software toolchain to extend the compiler to multi-core grids with
different local address spaces.
AU - Luchterhandt, Lars
AU - Nellius, Tom
AU - Beck, Robert
AU - Dömer, Rainer
AU - Kneuper, Pascal
AU - Müller, Wolfgang
AU - Sadiye, Babak
ID - 45778
T2 - MBMV 2023 - 26. Workshop "Methoden und Beschreibungssprachen zur Modellierung und Verifikation von Schaltungen und Systemen“
TI - Methoden und Beschreibungssprachen zur Modellierung und Verifikation von Schaltungen und Systemen
ER -
TY - JOUR
AB - As a benchmark, the structural, electronic and optical properties of the three main phases of TiO$\rm{_2}$ crystals have been calculated using Hubbard U correction and hybrid functional methods in density-functional theory. These calculations are compared concerning the available experimental observations on pristine TiO$\rm{_2}$ crystals. Modified hybrid functionals, particularly the PBE0 functional with 11.4% fraction of exact exchange, are shown to provide highly accurate atomic structures and also accurate electronic structure data, including optical excitation energies. With $\rm{DFT+U}$, accurate optical spectra are also possible, but only if the Hubbard U is applied on the O $\rm2p$ electrons exclusively. Furthermore, both methods, the 11.4%-PBE0 hybrid functional and the $\rm{DFT+U_p}$ scheme have been used to study TiO$\rm{_2}$ amorphous ultra-thin films, confirming the agreement of the two methods even with respect to small details of the optical spectra. Our results show that the proposed $\rm{DFT+U_p}$ methodology is computationally efficient, but still accurate. It can be applied to well-ordered TiO$\rm{_2}$ polymorphs as well as to amorphous TiO$\rm{_2}$ and will allow for the calculations of complex titania-based structures.
AU - Badalov, Sabuhi
AU - Bocchini, Adriana
AU - Wilhelm, Rene
AU - Kozub, A. L.
AU - Gerstmann, Uwe
AU - Schmidt, Wolf Gero
ID - 45764
JF - Materials Research Express
TI - Rutile, anatase, brookite and titania thin film from Hubbard corrected and hybrid DFT
ER -
TY - CONF
AU - Ecker, Wolfgang
AU - Krstic, Milos
AU - Ulbricht, Markus
AU - Mauderer, Andreas
AU - Jentzsch, Eyck
AU - Koch, Andreas
AU - Koppelmann, Bastian
AU - Müller, Wolfgang
AU - Sadiye, Babak
AU - Bruns, Niklas
AU - Drechsler, Rolf
AU - Müller-Gritschneder, Daniel
AU - Schlamelcher, Jan
AU - Grüttner, Kim
AU - Bormann, Jörg
AU - Kunz, Wolfgang
AU - Heckmann, Reinhold
AU - Angst, Gerhard
AU - Wimmer, Ralf
AU - Becker, Bernd
AU - Faller, Tobias
AU - Palomero Bernardo, Paul
AU - Brinkmann, Oliver
AU - Partzsch, Johannes
AU - Mayr, Christian
ID - 45776
T2 - Scale4Edge – Scaling RISC-V for Edge Applications
TI - Scale4Edge – Scaling RISC-V for Edge Applications
ER -
TY - JOUR
AB - The development of automotive components with reduced greenhouse gas (GHG) emissions is needed to reduce overall vehicle emissions. Life Cycle Engineering (LCE) based on Life Cycle Assessment (LCA) supports this by providing holistic information and improvement potentials regarding eco-efficient products. Key factors influencing LCAs of automotive components, such as material production, will change in the future. First approaches for integrating future scenarios for these key factors into LCE already exist, but they only consider a limited number of parameters and scenarios. This work aims to develop a method that can be practically applied in the industry for integrating prospective LCAs (pLCA) into the LCE of automotive components, considering relevant parameters and consistent scenarios. Therefore, pLCA methods are further developed to investigate the influence of future scenarios on the GHG emissions of automotive components. The practical application is demonstrated for a vehicle component with different design options. This paper shows that different development paths of the foreground and background system can shift the ecological optimum of design alternatives. Therefore, future pathways of relevant parameters must be considered comprehensively to reduce GHG emissions of future vehicles. This work contributes to the methodological and practical integration of pLCA into automotive development processes and provides quantitative results.
AU - Grenz, Julian
AU - Ostermann, Moritz
AU - Käsewieter, Karoline
AU - Cerdas, Felipe
AU - Marten, Thorsten
AU - Herrmann, Christoph
AU - Tröster, Thomas
ID - 45782
IS - 13
JF - Sustainability
KW - prospective LCA
KW - life cycle engineering (LCE)
KW - lightweight design
KW - automotive components
KW - body parts
KW - circular economy
KW - steel
KW - aluminum
KW - hybrid materials
KW - fiber metal laminates
SN - 2071-1050
TI - Integrating Prospective LCA in the Development of Automotive Components
VL - 15
ER -
TY - CONF
AB - The global megatrends of digitization and sustainability lead to new challenges for the design and management of technical products in industrial companies. Product management - as the bridge between market and company - has the task to absorb and combine the manifold requirements and make the right product-related decisions. In the process, product management is confronted with heterogeneous information, rapidly changing portfolio components, as well as increasing product, and organizational complexity. Combining and utilizing data from different sources, e.g., product usage data and social media data leads to promising potentials to improve the quality of product-related decisions. In this paper, we reinforce the need for data-driven product management as an interdisciplinary field of action. The state of data-driven product management in practice was analyzed by conducting workshops with six manufacturing companies and hosting a focus group meeting with experts from different industries. We investigate the expectations and derive requirements leading us to open research questions, a vision for data-driven product management, and a research agenda to shape future research efforts.
AU - Grigoryan, Khoren
AU - Fichtler, Timm
AU - Schreiner, Nick
AU - Rabe, Martin
AU - Panzner, Melina
AU - Kühn, Arno
AU - Dumitrescu, Roman
AU - Koldewey, Christian
ID - 45793
KW - Product Management
KW - Data Analytics
KW - Data-Driven Design
KW - Product-related data
KW - Lifecycle Data
KW - Tool-support
T2 - Procedia CIRP 33
TI - Data-Driven Product Management: A Practitioner-Driven Research Agenda
ER -
TY - JOUR
AB - Abstract
Background
Occupational health interventions for leaders are underrepresented in small and medium-sized enterprises (SMEs). When creating and developing effective occupational health interventions, identification of the specific needs of the target group is regarded as an essential step before planning an intervention. Therefore, the aim of this study was (1) to examine the subjectively experienced work-related stressors of leaders in small and medium-sized IT and technological services enterprises, (2) to explore coping behaviors leaders use to deal with the experienced work-related stressors, (3) to investigate resources supporting the coping process and (4) to identify potentially self-perceived consequences resulting from the experienced stressors.
Methods
Ten semi-structured interviews with leaders in small and medium-sized IT and technological services enterprises were conducted. The interviews were transcribed and analyzed with content-structuring qualitative content analysis in accordance to Kuckartz.
Results
Leaders in small and medium-sized IT and technological services enterprises experience various stressors caused by work organization as well as industry-related stressors and other work-related stressors. To address the experienced stressors, leaders apply problem focused coping behaviors (e.g. performing changes on structural and personal level), emotional focused coping behaviors (e.g. balancing activities, cognitive restructuring) as well as the utilization of social support. Helpful resources for the coping process include organizational, social and personal resources. As a result of the experienced work-related stressors, interviewees stated to experience different health impairments, negative effects on work quality as well as neglect of leisure activities and lack of time for family and friends.
Conclusion
The identified experienced work-related stressors, applied coping behaviors, utilized resources and emerging consequences underpin the urgent need for the development and performance of health-oriented leadership interventions for leaders in small and medium- sized IT and technological services. The results of this study can be used when designing a target-oriented intervention for the examined target group.
AU - Dannheim, Indra
AU - Buyken, Anette
AU - Kroke, Anja
ID - 45807
IS - 1
JF - BMC Public Health
KW - Public Health
KW - Environmental and Occupational Health
SN - 1471-2458
TI - Work-related stressors and coping behaviors among leaders in small and medium-sized IT and technological services enterprises
VL - 23
ER -
TY - JOUR
AB - Abstract
Objective:
To systematically review the impact of choice architecture interventions (CAI) on the food choice of healthy adolescents in a secondary school setting. Factors potentially contributing to the effectiveness of CAI types and numbers implemented and its long-term success were examined.
Design:
PUBMED and Web of Science were systematically searched in October 2021. Publications were included following predefined inclusion criteria and grouped according to number and duration of implemented interventions. Intervention impact was determined by systematic description of the reported quantitative changes in food choice and/or consumption. Intervention types were compared with regards to food selection and sustained effects either during or following the intervention.
Setting:
CAI on food choice of healthy adolescents in secondary schools.
Participants:
Not applicable
Results:
Fourteen studies were included; four randomized controlled trials and five each of controlled or uncontrolled pre-post design, respectively. Four studies implemented a single CAI type, with ten implementing > 1. Three studies investigated CAI effects over the course of a school year either by continuous or repeated data collection, while ten studies’ schools were visited on selected days during intervention. Twelve studies reported desired changes in overall food selection, yet effects were not always significant, and appeared less conclusive for longer term studies.
Conclusions:
This review found promising evidence that CAI can be effective in encouraging favorable food choices in healthy adolescents in a secondary school setting. However, further studies designed to evaluate complex interventions are needed.
AU - Schulte, Eva A.
AU - Winkler, Gertrud
AU - Brombach, Christine
AU - Buyken, Anette
ID - 45806
JF - Public Health Nutrition
KW - Public Health
KW - Environmental and Occupational Health
KW - Nutrition and Dietetics
KW - Medicine (miscellaneous)
SN - 1368-9800
TI - Choice architecture interventions promoting sustained healthier food choice and consumption by students in a secondary school setting: A systematic review of intervention studies
ER -
TY - JOUR
AB - Background: Establishing a healthy lifestyle has a great potential to reduce the prevalence of non-communicable diseases (NCDs) and their risk factors. NCDs contribute immensely to the economic costs of the health care system arising from therapy, medication use, and productivity loss. Aim: The aim of this study was to evaluate the effect of the Healthy Lifestyle Community Program (cohort 2; HLCP-2) on medication use and consequently on medication costs for selected NCDs (diabetes, hypertension, and dyslipidemia). Methods: Data stem from a 24-month non-randomised, controlled intervention trial aiming to improve risk factors for NCDs. Participants completed questionnaires at six measurement time points assessing medication use, from which costs were calculated. The following medication groups were included in the analysis as NCD medication: glucose-lowering medications (GLM), antihypertensive drugs (AHD) and lipid-lowering drugs (LLD). Statistical tests for inter- and intra-group comparison and multiple regression analysis were performed. Results: In total, 118 participants (intervention group [IG]: n = 79; control group [CG]: n = 39) were considered. Compared to baseline medication use decreased slightly in the IG and increased in the CG. Costs for NCD medication were significantly lower in the IG than in the CG after 6 ( p = 0.004), 12 ( p = 0.040), 18 ( p = 0.003) and 24 months ( p = 0.008). After multiple regression analysis and adjusting for confounders, change of costs differed significantly between the groups in all final models. Conclusion: The HLCP-2 was able to moderately prevent an increase of medication use and thus reduce costs for medication to treat NCDs with the greatest impact on AHD. Trial registration German Clinical Trials Register DRKS ( www.drks.de ; reference: DRKS00018775).
AU - Kranz, Ragna-Marie
AU - Kettler, Carmen
AU - Anand, Corinna
AU - Koeder, Christian
AU - Husain, Sarah
AU - Schoch, Nora
AU - Buyken, Anette
AU - Englert, Heike
ID - 45810
JF - Nutrition and Health
KW - Nutrition and Dietetics
KW - General Medicine
KW - Medicine (miscellaneous)
SN - 0260-1060
TI - Effect of a controlled lifestyle intervention on medication use and costs: The Healthy Lifestyle Community Program (cohort 2)
ER -
TY - JOUR
AB - A previous follow-up of the GINIplus study showed that breastfeeding could protect against early eczema. However, effects diminished in adolescence, possibly indicating a “rebound effect” in breastfed children after initial protection. We evaluated the role of early eczema until three years of age on allergies until young adulthood and assessed whether early eczema modifies the association between breastfeeding and allergies. Data from GINIplus until 20-years of age (N = 4058) were considered. Information on atopic eczema, asthma, and rhinitis was based on reported physician’s diagnoses. Adjusted Odds Ratios (aOR) were modelled by using generalized estimating equations. Early eczema was associated with eczema (aORs = 3.2–14.4), asthma (aORs = 2.2–2.7), and rhinitis (aORs = 1.2–2.7) until young adulthood. For eczema, this association decreased with age (p-for-interaction = 0.002–0.006). Longitudinal models did not show associations between breastfeeding and the respective allergies from 5 to 20 years of age. Moreover, early eczema generally did not modify the association between milk feeding and allergies except for rhinitis in participants without family history of atopy. Early eczema strongly predicts allergies until young adulthood. While preventive effects of full breastfeeding on eczema in infants with family history of atopy does not persist until young adulthood, the hypothesis of a rebound effect after initial protection cannot be confirmed.
AU - Libuda, Lars
AU - Filipiak-Pittroff, Birgit
AU - Standl, Marie
AU - Schikowski, Tamara
AU - von Berg, Andrea
AU - Koletzko, Sibylle
AU - Bauer, Carl-Peter
AU - Heinrich, Joachim
AU - Berdel, Dietrich
AU - Gappa, Monika
ID - 45813
IS - 12
JF - Nutrients
KW - Food Science
KW - Nutrition and Dietetics
SN - 2072-6643
TI - Full Breastfeeding and Allergic Diseases—Long-Term Protection or Rebound Effects?
VL - 15
ER -
TY - CONF
AB - The notion of neural collapse refers to several emergent phenomena that have been empirically observed across various canonical classification problems. During the terminal phase of training a deep neural network, the feature embedding of all examples of the same class tend to collapse to a single representation, and the features of different classes tend to separate as much as possible. Neural collapse is often studied through a simplified model, called the unconstrained feature representation, in which the model is assumed to have "infinite expressivity" and can map each data point to any arbitrary representation. In this work, we propose a more realistic variant of the unconstrained feature representation that takes the limited expressivity of the network into account. Empirical evidence suggests that the memorization of noisy data points leads to a degradation (dilation) of the neural collapse. Using a model of the memorization-dilation (M-D) phenomenon, we show one mechanism by which different losses lead to different performances of the trained network on noisy data. Our proofs reveal why label smoothing, a modification of cross-entropy empirically observed to produce a regularization effect, leads to improved generalization in classification tasks.
AU - Nguyen, Duc Anh
AU - Levie, Ron
AU - Lienen, Julian
AU - Kutyniok, Gitta
AU - Hüllermeier, Eyke
ID - 31880
T2 - International Conference on Learning Representations, ICLR
TI - Memorization-Dilation: Modeling Neural Collapse Under Noise
ER -
TY - GEN
AB - Label noise poses an important challenge in machine learning, especially in
deep learning, in which large models with high expressive power dominate the
field. Models of that kind are prone to memorizing incorrect labels, thereby
harming generalization performance. Many methods have been proposed to address
this problem, including robust loss functions and more complex label correction
approaches. Robust loss functions are appealing due to their simplicity, but
typically lack flexibility, while label correction usually adds substantial
complexity to the training setup. In this paper, we suggest to address the
shortcomings of both methodologies by "ambiguating" the target information,
adding additional, complementary candidate labels in case the learner is not
sufficiently convinced of the observed training label. More precisely, we
leverage the framework of so-called superset learning to construct set-valued
targets based on a confidence threshold, which deliver imprecise yet more
reliable beliefs about the ground-truth, effectively helping the learner to
suppress the memorization effect. In an extensive empirical evaluation, our
method demonstrates favorable learning behavior on synthetic and real-world
noise, confirming the effectiveness in detecting and correcting erroneous
training labels.
AU - Lienen, Julian
AU - Hüllermeier, Eyke
ID - 45814
T2 - arXiv:2305.13764
TI - Mitigating Label Noise through Data Ambiguation
ER -
TY - CONF
AU - Özcan, Leon
AU - Fichtler, Timm
AU - Kasten, Benjamin
AU - Koldewey, Christian
AU - Dumitrescu, Roman
ID - 45812
KW - Digital Platform
KW - Platform Strategy
KW - Strategic Management
KW - Platform Life Cycle
KW - Interview Study
KW - Business Model
KW - Business-to-Business
KW - Two-sided Market
KW - Multi-sided Market
TI - Interview Study on Strategy Options for Platform Operation in B2B Markets
ER -