TY - GEN A1 - Brand, Ralf A1 - Ulrich, Lukas T1 - I Can See It in Your Face. BT - Affective Valuation of Exercise in More or Less Physically Active Individuals T2 - Postprints der Universität Potsdam : Humanwissenschaftliche Reihe N2 - The purpose of this study was to illustrate that people’s affective valuation of exercise can be identified in their faces. The study was conducted with a software for automatic facial expression analysis and it involved testing the hypothesis that positive or negative affective valuation occurs spontaneously when people are reminded of exercise. We created a task similar to an emotional Stroop task, in which participants responded to exercise-related and control stimuli with a positive or negative facial expression (smile or frown) depending on whether the photo was presented upright or tilted. We further asked participants how much time they would normally spend for physical exercise, because we assumed that the affective valuation of those who exercise more would be more positive. Based on the data of 86 participants, regression analysis revealed that those who reported less exercise and a more negative reflective evaluation of exercise initiated negative facial expressions on exercise-related stimuli significantly faster than those who reported exercising more often. No significant effect was observed for smile responses. We suspect that responding with a smile to exercise-related stimuli was the congruent response for the majority of our participants, so that for them no Stroop interference occurred in the exercise-related condition. This study suggests that immediate negative affective reactions to exercise-related stimuli result from a postconscious automatic process and can be detected in the study participants’ faces. It furthermore illustrates how methodological paradigms from social–cognition research (here: the emotional Stroop paradigm) can be adapted to collect and analyze biometric data for the investigation of exercisers’ and non-exercisers’ automatic valuations of exercise. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 597 KW - motivation KW - exercise KW - emotion KW - automatic facial expression analysis KW - Stroop effect Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-444481 SN - 1866-8364 IS - 597 ER - TY - GEN A1 - Brand, Ralf A1 - Ulrich, Lukas T1 - I can see it in your face BT - Exercisers’ and non-exercisers’ automatic affective valuations of exercise T2 - Journal of sport & exercise psychology Y1 - 2018 U6 - https://doi.org/10.1123/jsep.2018-0169 SN - 0895-2779 SN - 1543-2904 VL - 40 SP - S77 EP - S78 PB - Human Kinetics Publ. CY - Champaign ER - TY - JOUR A1 - Brand, Ralf A1 - Ulrich, Lukas T1 - I Can See It in Your Face. BT - Affective Valuation of Exercise in More or Less Physically Active Individuals JF - Frontiers in Psychology N2 - The purpose of this study was to illustrate that people’s affective valuation of exercise can be identified in their faces. The study was conducted with a software for automatic facial expression analysis and it involved testing the hypothesis that positive or negative affective valuation occurs spontaneously when people are reminded of exercise. We created a task similar to an emotional Stroop task, in which participants responded to exercise-related and control stimuli with a positive or negative facial expression (smile or frown) depending on whether the photo was presented upright or tilted. We further asked participants how much time they would normally spend for physical exercise, because we assumed that the affective valuation of those who exercise more would be more positive. Based on the data of 86 participants, regression analysis revealed that those who reported less exercise and a more negative reflective evaluation of exercise initiated negative facial expressions on exercise-related stimuli significantly faster than those who reported exercising more often. No significant effect was observed for smile responses. We suspect that responding with a smile to exercise-related stimuli was the congruent response for the majority of our participants, so that for them no Stroop interference occurred in the exercise-related condition. This study suggests that immediate negative affective reactions to exercise-related stimuli result from a postconscious automatic process and can be detected in the study participants’ faces. It furthermore illustrates how methodological paradigms from social–cognition research (here: the emotional Stroop paradigm) can be adapted to collect and analyze biometric data for the investigation of exercisers’ and non-exercisers’ automatic valuations of exercise. KW - motivation KW - exercise KW - emotion KW - automatic facial expression analysis KW - Stroop effect Y1 - 2019 U6 - https://doi.org/10.3389/fpsyg.2019.02901 SN - 1664-1078 VL - 10 PB - Frontiers Research Foundation CY - Lausanne ER - TY - RPRT A1 - Berghäuser, Lisa A1 - Schoppa, Lukas A1 - Ulrich, Jana A1 - Dillenardt, Lisa A1 - Jurado, Oscar E. A1 - Passow, Christian A1 - Samprogna Mohor, Guilherme A1 - Seleem, Omar A1 - Petrow, Theresia A1 - Thieken, Annegret T1 - Starkregen in Berlin BT - Meteorologische Ereignisrekonstruktion und Betroffenenbefragung N2 - In den Sommern der Jahre 2017 und 2019 kam es in Berlin an mehreren Orten zu Überschwemmungen in Folge von Starkregenereignissen. In beiden Jahren führte dies zu erheblichen Beeinträchtigungen im Alltag der Berliner:innen sowie zu hohen Sachschäden. Eine interdisziplinäre Taskforce des DFG-Graduiertenkollegs NatRiskChange untersuchte (1) die meteorologischen Eigenschaften zweier besonders eindrücklicher Unwetter, sowie (2) die Vulnerabilität der Berliner Bevölkerung gegenüber Starkregen. Eine vergleichende meteorologische Rekonstruktion der Starkregenereignisse von 2017 und 2019 ergab deutliche Unterschiede in der Entstehung und den Überschreitungswahrscheinlichkeiten der beiden Unwetter. So war das Ereignis von 2017 mit einer relativ großen räumlichen Ausdehnung und langer Dauer ein untypisches Starkregenereignis, während es sich bei dem Unwetter von 2019 um ein typisches, kurzzeitiges Starkregenereignis mit ausgeprägter räumlicher Heterogenität handelte. Eine anschließende statistische Analyse zeigte, dass das Ereignis von 2017 für längere Niederschlagsdauern (>=24 h) als großflächiges Extremereignis mit Überschreitungswahrscheinlichkeiten von unter 1 % einzuordnen ist (d.h. Wiederkehrperioden >=100 Jahre). Im Jahr 2019 wurden dagegen ähnliche Überschreitungswahrscheinlichkeiten nur lokal und für kürzere Zeiträume (1-2 h) berechnet. Die Vulnerabilitätsanalyse basiert auf einer von April bis Juni 2020 in Berlin durchgeführten Onlinebefragung. Diese richtete sich an Personen, die bereits von vergangenen Starkregenereignissen betroffen waren und thematisierte das Schadensereignis selbst, daraus entstandene Beeinträchtigungen und Schäden, Risikowahrnehmung sowie Notfall- und Vorsorgemaßnahmen. Die erhobenen Umfragedaten (n=102) beziehen sich vornehmlich auf die Ereignisse von 2017 und 2019 und zeigen, dass die Berliner Bevölkerung sowohl im Alltag (z.B. bei der Beschaffung von Lebensmitteln) als auch im eigenen Haushalt (z.B. durch Überschwemmungsschäden) von den Unwettern beeinträchtigt war. Zudem deuteten die Antworten der Betroffenen auf Möglichkeiten hin, die Vulnerabilität der Gesellschaft gegenüber Starkregen weiter zu reduzieren - etwa durch die Unterstützung besonders betroffener Gruppen (z.B. Pflegende), durch gezielte Informationskampagnen zum Schutz vor Starkregen oder durch die Erhöhung der Reichweite von Unwetterwarnungen. Eine statistische Analyse zur Effektivität privater Notfall- und Vorsorgemaßnahmen auf Grundlage der Umfragedaten bestätigte vorherige Studienergebnisse. So gab es Anhaltspunkte dafür, dass durch das Umsetzen von Vorsorgemaßnahmen wie beispielsweise das Installieren von Rückstauklappen, Barriere-Systemen oder Pumpen Starkregenschäden reduziert werden können. Die Ergebnisse dieses Berichts unterstreichen die Notwendigkeit für ein integriertes Starkregenrisikomanagment, das die Risikokomponenten Gefährdung, Vulnerabilität und Exposition ganzheitlich und auf mehreren Ebenen (z.B. staatlich, kommunal, privat) betrachtet. N2 - In the summers of 2017 and 2019, the city of Berlin was hit by heavy rainfall leading to urban flooding in several locations. In both years, this led to considerable disruptions of the daily life and high property damage. With focus on two particularly impressive events a taskforce of the DFG Research Training Group NatRiskChange investigated (1) the meteorological characteristics of both events as well as (2) the vulnerability of the Berlin population to heavy rainfall. A comparative meteorological reconstruction of the 2017 and 2019 heavy rainfall events revealed fundamental differences between the two storms. The 2017 event was an atypical heavy rain event, as it was characterized by a relatively large spatial extent and long duration of rainfall, whereas the 2019 storm was a typical short duration heavy rain event with a distinct spatial heterogeneity. Subsequent statistical analysis indicated that the 2017 event should be classified as a large-scale extreme event with exceedance probabilities below 1 % for longer precipitation durations (i.e., return periods of over 100 years). In contrast, in 2019 similar exceedance probabilities were estimated only locally and for shorter durations (1-2 h). The vulnerability analysis of this taskforce was based on an online survey conducted in Berlin between April and June 2020. The survey was aimed at people who had experienced past heavy rainfall events in Berlin, and addressed the resulting impairments and damages, risk perceptions as well as emergency and preparedness measures. The survey data (n=102) primarily referred to the events of 2017 and 2019 and showed that the respondents were affected by the storms both in their daily lives (e.g., when purchasing food) and in their own households (e.g., due to flood damage). In addition, the analysis of the responses pointed to ways to further reduce society's vulnerability to heavy rain. That was, for example, by providing support to particularly affected groups (e.g., caregivers), through targeted information campaigns to protect against heavy rainfall or by improving the range of early warning systems. A statistical analysis of the efficacy of property-level emergency and preparedness measures based on the survey data confirmed previous study findings and provided evidence of reducing heavy rain damage through preparedness. The findings of the taskforce highlight the need for integrated heavy rainfall risk management that considers the risk components of hazard, vulnerability, and exposure holistically and at multiple levels (e.g., state, local and private households). KW - Starkregen KW - Risikomanagement KW - Meteorologische Ereignisanalyse KW - Betroffenenbefragung KW - Berlin KW - Urban Flooding KW - Risk reduction KW - Meteorological Event Analysis KW - Survey of affected residents KW - Berlin Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-500560 ER - TY - BOOK A1 - Hermanns, Jolanda A1 - Böhme, Katrin A1 - Meyering, Meike A1 - Fuchs, Isabelle A1 - Wagner, Simon A1 - Krauskopf, Karsten A1 - Knigge, Michel A1 - Rother, Stefanie A1 - Tosch, Frank A1 - Wendland, Mirko A1 - Wulff, Peter A1 - Mientus, Lukas A1 - Nowak, Anna A1 - Borowski, Andreas A1 - Baer, Ella A1 - Bosch, Jannis A1 - Wilbert, Jürgen A1 - Bräsel, Tim A1 - Fenn, Monika A1 - Kortenkamp, Ulrich A1 - Kuzle, Ana A1 - Reitz-Koncebovski, Karen A1 - Burg, Paula A1 - Lampart, Fabian A1 - Leubner, Martin A1 - Freitag-Hild, Britta A1 - Bitmann, Anna A1 - Reinhardt, Susanne A1 - Roos, Jana A1 - Hußner, Isabell A1 - Börner, Dustin A1 - Lazarides, Rebecca A1 - Glowinski, Ingrid A1 - Autenrieth, Marijke A1 - Radke, Thea A1 - Ehlert, Antje A1 - Menke, Anne A1 - Haupenthal, Anna A1 - Schramm, Satyam Antonio A1 - Kruse, Julia A1 - Körner, Dorothea A1 - Fischer, Jakob Thomas A1 - Kayser, Daniela Niesta ED - Hermanns, Jolanda T1 - PSI-Potsdam BT - Ergebnisbericht zu den Aktivitäten im Rahmen der Qualitätsoffensive Lehrerbildung (2019-2023) T3 - Potsdamer Beiträge für Lehrkräftebildung und Bildungsforschung N2 - An der Universität Potsdam wird seit 2015 im Rahmen der „Qualitätsoffensive Lehrerbildung“ das Projekt „Professionalisierung – Schulpraktische Studien – Inklusion“ (PSI-Potsdam) durchgeführt und am Zentrum für Lehrerbildung und Bildungsforschung (ZeLB) koordiniert. Zur ersten Projektförderphase (2015-2018) erschien der Band „PSI-Potsdam – Ergebnisbericht zu den Aktivitäten im Rahmen der Qualitätsoffensive Lehrerbildung (2015-2018)“ zum Auftakt der Reihe „Potsdamer Beiträge zur Lehrerbildung und Bildungsforschung“. Der vorliegende Band aus der gleichen Reihe gibt in den Kapiteln „Erhebungen“, „Lehrkonzepte“ und „Vernetzungen“ einen Überblick über alle Teilprojekte der zweiten Projektförderphase (2019-2023). Wissenschaftler:innen aus verschiedenen Fachdidaktiken, Fachwissenschaften sowie aus den Bildungswissenschaften und der Inklusionspädagogik haben im Rahmen des Projektes kooperiert. Sowohl praxisnahe Forschung als auch die Entwicklung neuer Lehrkonzepte sowie Strategien zur Vernetzung innerhalb der Lehrkräftebildung stehen im Fokus dieses Bandes. Die Praxisphasen, die im Rahmen des „Potsdamer Modells der Lehrerbildung“ eine zentrale Rolle spielen, wurden in einer großen Studie über alle Praxisphasen untersucht. Der Band gibt interessante Einblicke in die Ergebnisse der Teilprojekte und Anregungen sowohl für die eigene Forschung als auch für Entwicklungsarbeit wie zum Beispiel die Entwicklung neuer Lehrkonzepte. Herausgegeben wird dieser Band von PD Dr. Jolanda Hermanns (Gesamtkoordinatorin PSI-Potsdam und Chemiedidaktikerin). T3 - Potsdamer Beiträge zur Lehrkräftebildung und Bildungsforschung - 3 KW - Lehrerbildung KW - Evaluation KW - Testinstrumente KW - Konzepte KW - Vernetzung KW - teacher education KW - evaluation KW - test instruments KW - concepts KW - networking Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-601875 SN - 978-3-86956-568-2 SN - 2626-3556 SN - 2626-4722 IS - 3 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Schwingshackl, Lukas A1 - Ruzanska, Ulrike Alexandra A1 - Anton, Verena A1 - Wallroth, Raphael A1 - Ohla, Kathrin A1 - Knueppel, Sven A1 - Schulze, Matthias Bernd A1 - Pischon, Tobias A1 - Deutschbein, Johannes A1 - Schenk, Liane A1 - Warschburger, Petra A1 - Harttig, Ulrich A1 - Boeing, Heiner A1 - Bergmann, Manuela M. T1 - The NutriAct Family Study: a web-based prospective study on the epidemiological, psychological and sociological basis of food choice JF - BMC public health N2 - Background: Most studies on food choice have been focussing on the individual level but familial aspects may also play an important role. This paper reports of a novel study that will focus on the familial aspects of the formation of food choice among men and women aged 50-70 years by recruiting spouses and siblings (NutriAct Family Study; NFS). Discussion: Until August 4th 2017, 4783 EPIC-Participants were contacted by mail of which 446 persons recruited 2 to 5 family members (including themselves) resulting in 1032 participants, of whom 82% had started answering or already completed the questionnaires. Of the 4337 remaining EPIC-participants who had been contacted, 1040 (24%) did not respond at all, and 3297 (76%) responded but declined, in 51% of the cases because of the request to recruit at least 2 family members in the respective age range. The developed recruitment procedures and web-based methods of data collection are capable to generate the required study population including the data on individual and inter-personal determinants which will be linkable to food choice. The information on familial links among the study participants will show the role of familial traits in midlife for the adoption of food choices supporting healthy aging. KW - NutriAct family study KW - Study protocol KW - Food choice KW - Determinants Y1 - 2018 U6 - https://doi.org/10.1186/s12889-018-5814-x SN - 1471-2458 VL - 18 PB - BMC CY - London ER - TY - JOUR A1 - Hörmann, Ulrich A1 - Zeiske, Stefan A1 - Piersimoni, Fortunato A1 - Hoffmann, Lukas A1 - Schlesinger, Raphael A1 - Koch, Norbert A1 - Riedl, Thomas A1 - Andrienko, Denis A1 - Neher, Dieter T1 - Stark effect of hybrid charge transfer states at planar ZnO/organic interfaces JF - Physical review : B, Condensed matter and materials physics N2 - We investigate the bias dependence of the hybrid charge transfer state emission at planar heterojunctions between the metal oxide acceptor ZnO and three donor molecules. The electroluminescence peak energy linearly increases with the applied bias, saturating at high fields. Variation of the organic layer thickness and deliberate change of the ZnO conductivity through controlled photodoping allow us to confirm that this bias-induced spectral shift relates to the internal electric field in the organic layer rather than the filling of states at the hybrid interface. We show that existing continuum models overestimate the hole delocalization and propose a simple electrostatic model in which the linear and quadratic Stark effects are explained by the electrostatic interaction of a strongly polarizable molecular cation with its mirror image. Y1 - 2018 U6 - https://doi.org/10.1103/PhysRevB.98.155312 SN - 2469-9950 SN - 2469-9969 VL - 98 IS - 15 PB - American Physical Society CY - College Park ER - TY - JOUR A1 - Stolterfoht, Martin A1 - Caprioglio, Pietro A1 - Wolff, Christian Michael A1 - Marquez, Jose A. A1 - Nordmann, Joleik A1 - Zhang, Shanshan A1 - Rothhardt, Daniel A1 - Hörmann, Ulrich A1 - Amir, Yohai A1 - Redinger, Alex A1 - Kegelmann, Lukas A1 - Zu, Fengshuo A1 - Albrecht, Steve A1 - Koch, Norbert A1 - Kirchartz, Thomas A1 - Saliba, Michael A1 - Unold, Thomas A1 - Neher, Dieter T1 - The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cells JF - Energy & environmental science N2 - Charge transport layers (CTLs) are key components of diffusion controlled perovskite solar cells, however, they can induce additional non-radiative recombination pathways which limit the open circuit voltage (V-OC) of the cell. In order to realize the full thermodynamic potential of the perovskite absorber, both the electron and hole transport layer (ETL/HTL) need to be as selective as possible. By measuring the photoluminescence yield of perovskite/CTL heterojunctions, we quantify the non-radiative interfacial recombination currents in pin- and nip-type cells including high efficiency devices (21.4%). Our study comprises a wide range of commonly used CTLs, including various hole-transporting polymers, spiro-OMeTAD, metal oxides and fullerenes. We find that all studied CTLs limit the V-OC by inducing an additional non-radiative recombination current that is in most cases substantially larger than the loss in the neat perovskite and that the least-selective interface sets the upper limit for the V-OC of the device. Importantly, the V-OC equals the internal quasi-Fermi level splitting (QFLS) in the absorber layer only in high efficiency cells, while in poor performing devices, the V-OC is substantially lower than the QFLS. Using ultraviolet photoelectron spectroscopy and differential charging capacitance experiments we show that this is due to an energy level mis-alignment at the p-interface. The findings are corroborated by rigorous device simulations which outline important considerations to maximize the V-OC. This work highlights that the challenge to suppress non-radiative recombination losses in perovskite cells on their way to the radiative limit lies in proper energy level alignment and in suppression of defect recombination at the interfaces. Y1 - 2019 U6 - https://doi.org/10.1039/c9ee02020a SN - 1754-5692 SN - 1754-5706 VL - 12 IS - 9 SP - 2778 EP - 2788 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Hirschmüller, Anja A1 - Konstantinidis, Lukas A1 - Baur, Heiner A1 - Müller, Steffen A1 - Mehlhorn, Alexander A1 - Kontermann, Julia A1 - Grosse, Ulrich A1 - Südkamp, Norbert P. A1 - Helwig, Peter T1 - Do changes in dynamic plantar pressure distribution, strength capacity and postural control after intra-articular calcaneal fracture correlate with clinical and radiological outcome? JF - Injury : international journal of the care of the injured N2 - Fractures of the calcaneus are often associated with serious permanent disability, a considerable reduction in quality of life, and high socio-economic cost. Although some studies have already reported changes in plantar pressure distribution after calcaneal fracture, no investigation has yet focused on the patient's strength and postural control. Method: 60 patients with unilateral, operatively treated, intra-articular calcaneal fractures were clinically and biomechanically evaluated >1 year postoperatively (physical examination, SF-36, AOFAS score, lower leg isokinetic strength, postural control and gait analysis including plantar pressure distribution). Results were correlated to clinical outcome and preoperative radiological findings (Bohler angle, Zwipp and Sanders Score). Results: Clinical examination revealed a statistically significant reduction in range of motion at the tibiotalar and the subtalar joint on the affected side. Additionally, there was a statistically significant reduction of plantar flexor peak torque of the injured compared to the uninjured limb (p < 0.001) as well as a reduction in postural control that was also more pronounced on the initially injured side (standing duration 4.2 +/- 2.9 s vs. 7.6 +/- 2.1 s, p < 0.05). Plantar pressure measurements revealed a statistically significant pressure reduction at the hindfoot (p = 0.0007) and a pressure increase at the midfoot (p = 0.0001) and beneath the lateral forefoot (p = 0.037) of the injured foot. There was only a weak correlation between radiological classifications and clinical outcome but a moderate correlation between strength differences and the clinical questionnaires (CC 0.27-0.4) as well as between standing duration and the clinical questionnaires. Although thigh circumference was also reduced on the injured side, there was no important relationship between changes in lower leg circumference and strength suggesting that measurement of leg circumference may not be a valid assessment of maximum strength deficits. Self-selected walking speed was the parameter that showed the best correlation with clinical outcome (AOFAS score). Conclusion: Calcaneal fractures are associated with a significant reduction in ankle joint ROM, plantar flexion strength and postural control. These impairments seem to be highly relevant to the patients. Restoration of muscular strength and proprioception should therefore be aggressively addressed in the rehabilitation process after these fractures. KW - Intra-articular calcaneal fracture KW - Calcaneus KW - Muscle strength KW - Peak torque KW - Plantar pressure distribution KW - Proprioception KW - Postural control KW - Balance KW - Gait KW - Rehabilitation Y1 - 2011 U6 - https://doi.org/10.1016/j.injury.2010.09.040 SN - 0020-1383 VL - 42 IS - 10 SP - 1135 EP - 1143 PB - Elsevier CY - Oxford ER -