@misc{BrandUlrich2019, author = {Brand, Ralf and Ulrich, Lukas}, title = {I Can See It in Your Face.}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {597}, issn = {1866-8364}, doi = {10.25932/publishup-44448}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-444481}, pages = {13}, year = {2019}, abstract = {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.}, language = {en} } @misc{BrandUlrich2018, author = {Brand, Ralf and Ulrich, Lukas}, title = {I can see it in your face}, series = {Journal of sport \& exercise psychology}, volume = {40}, journal = {Journal of sport \& exercise psychology}, publisher = {Human Kinetics Publ.}, address = {Champaign}, issn = {0895-2779}, doi = {10.1123/jsep.2018-0169}, pages = {S77 -- S78}, year = {2018}, language = {en} } @article{BrandUlrich2019, author = {Brand, Ralf and Ulrich, Lukas}, title = {I Can See It in Your Face.}, series = {Frontiers in Psychology}, volume = {10}, journal = {Frontiers in Psychology}, publisher = {Frontiers Research Foundation}, address = {Lausanne}, issn = {1664-1078}, doi = {10.3389/fpsyg.2019.02901}, pages = {11}, year = {2019}, abstract = {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.}, language = {en} } @techreport{BerghaeuserSchoppaUlrichetal.2021, author = {Bergh{\"a}user, Lisa and Schoppa, Lukas and Ulrich, Jana and Dillenardt, Lisa and Jurado, Oscar E. and Passow, Christian and Samprogna Mohor, Guilherme and Seleem, Omar and Petrow, Theresia and Thieken, Annegret}, title = {Starkregen in Berlin}, doi = {10.25932/publishup-50056}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-500560}, pages = {44}, year = {2021}, abstract = {In den Sommern der Jahre 2017 und 2019 kam es in Berlin an mehreren Orten zu {\"U}berschwemmungen in Folge von Starkregenereignissen. In beiden Jahren f{\"u}hrte dies zu erheblichen Beeintr{\"a}chtigungen im Alltag der Berliner:innen sowie zu hohen Sachsch{\"a}den. Eine interdisziplin{\"a}re Taskforce des DFG-Graduiertenkollegs NatRiskChange untersuchte (1) die meteorologischen Eigenschaften zweier besonders eindr{\"u}cklicher Unwetter, sowie (2) die Vulnerabilit{\"a}t der Berliner Bev{\"o}lkerung gegen{\"u}ber Starkregen. Eine vergleichende meteorologische Rekonstruktion der Starkregenereignisse von 2017 und 2019 ergab deutliche Unterschiede in der Entstehung und den {\"U}berschreitungswahrscheinlichkeiten der beiden Unwetter. So war das Ereignis von 2017 mit einer relativ großen r{\"a}umlichen Ausdehnung und langer Dauer ein untypisches Starkregenereignis, w{\"a}hrend es sich bei dem Unwetter von 2019 um ein typisches, kurzzeitiges Starkregenereignis mit ausgepr{\"a}gter r{\"a}umlicher Heterogenit{\"a}t handelte. Eine anschließende statistische Analyse zeigte, dass das Ereignis von 2017 f{\"u}r l{\"a}ngere Niederschlagsdauern (>=24 h) als großfl{\"a}chiges Extremereignis mit {\"U}berschreitungswahrscheinlichkeiten von unter 1 \% einzuordnen ist (d.h. Wiederkehrperioden >=100 Jahre). Im Jahr 2019 wurden dagegen {\"a}hnliche {\"U}berschreitungswahrscheinlichkeiten nur lokal und f{\"u}r k{\"u}rzere Zeitr{\"a}ume (1-2 h) berechnet. Die Vulnerabilit{\"a}tsanalyse basiert auf einer von April bis Juni 2020 in Berlin durchgef{\"u}hrten Onlinebefragung. Diese richtete sich an Personen, die bereits von vergangenen Starkregenereignissen betroffen waren und thematisierte das Schadensereignis selbst, daraus entstandene Beeintr{\"a}chtigungen und Sch{\"a}den, 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 Bev{\"o}lkerung sowohl im Alltag (z.B. bei der Beschaffung von Lebensmitteln) als auch im eigenen Haushalt (z.B. durch {\"U}berschwemmungssch{\"a}den) von den Unwettern beeintr{\"a}chtigt war. Zudem deuteten die Antworten der Betroffenen auf M{\"o}glichkeiten hin, die Vulnerabilit{\"a}t der Gesellschaft gegen{\"u}ber Starkregen weiter zu reduzieren - etwa durch die Unterst{\"u}tzung besonders betroffener Gruppen (z.B. Pflegende), durch gezielte Informationskampagnen zum Schutz vor Starkregen oder durch die Erh{\"o}hung der Reichweite von Unwetterwarnungen. Eine statistische Analyse zur Effektivit{\"a}t privater Notfall- und Vorsorgemaßnahmen auf Grundlage der Umfragedaten best{\"a}tigte vorherige Studienergebnisse. So gab es Anhaltspunkte daf{\"u}r, dass durch das Umsetzen von Vorsorgemaßnahmen wie beispielsweise das Installieren von R{\"u}ckstauklappen, Barriere-Systemen oder Pumpen Starkregensch{\"a}den reduziert werden k{\"o}nnen. Die Ergebnisse dieses Berichts unterstreichen die Notwendigkeit f{\"u}r ein integriertes Starkregenrisikomanagment, das die Risikokomponenten Gef{\"a}hrdung, Vulnerabilit{\"a}t und Exposition ganzheitlich und auf mehreren Ebenen (z.B. staatlich, kommunal, privat) betrachtet.}, language = {de} } @book{HermannsBoehmeMeyeringetal.2023, author = {Hermanns, Jolanda and B{\"o}hme, Katrin and Meyering, Meike and Fuchs, Isabelle and Wagner, Simon and Krauskopf, Karsten and Knigge, Michel and Rother, Stefanie and Tosch, Frank and Wendland, Mirko and Wulff, Peter and Mientus, Lukas and Nowak, Anna and Borowski, Andreas and Baer, Ella and Bosch, Jannis and Wilbert, J{\"u}rgen and Br{\"a}sel, Tim and Fenn, Monika and Kortenkamp, Ulrich and Kuzle, Ana and Reitz-Koncebovski, Karen and Burg, Paula and Lampart, Fabian and Leubner, Martin and Freitag-Hild, Britta and Bitmann, Anna and Reinhardt, Susanne and Roos, Jana and Hußner, Isabell and B{\"o}rner, Dustin and Lazarides, Rebecca and Glowinski, Ingrid and Autenrieth, Marijke and Radke, Thea and Ehlert, Antje and Menke, Anne and Haupenthal, Anna and Schramm, Satyam Antonio and Kruse, Julia and K{\"o}rner, Dorothea and Fischer, Jakob Thomas and Kayser, Daniela Niesta}, title = {PSI-Potsdam}, series = {Potsdamer Beitr{\"a}ge f{\"u}r Lehrkr{\"a}ftebildung und Bildungsforschung}, journal = {Potsdamer Beitr{\"a}ge f{\"u}r Lehrkr{\"a}ftebildung und Bildungsforschung}, number = {3}, editor = {Hermanns, Jolanda}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-568-2}, issn = {2626-3556}, doi = {10.25932/publishup-60187}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-601875}, publisher = {Universit{\"a}t Potsdam}, pages = {393}, year = {2023}, abstract = {An der Universit{\"a}t Potsdam wird seit 2015 im Rahmen der „Qualit{\"a}tsoffensive Lehrerbildung" das Projekt „Professionalisierung - Schulpraktische Studien - Inklusion" (PSI-Potsdam) durchgef{\"u}hrt und am Zentrum f{\"u}r Lehrerbildung und Bildungsforschung (ZeLB) koordiniert. Zur ersten Projektf{\"o}rderphase (2015-2018) erschien der Band „PSI-Potsdam - Ergebnisbericht zu den Aktivit{\"a}ten im Rahmen der Qualit{\"a}tsoffensive Lehrerbildung (2015-2018)" zum Auftakt der Reihe „Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung". Der vorliegende Band aus der gleichen Reihe gibt in den Kapiteln „Erhebungen", „Lehrkonzepte" und „Vernetzungen" einen {\"U}berblick {\"u}ber alle Teilprojekte der zweiten Projektf{\"o}rderphase (2019-2023). Wissenschaftler:innen aus verschiedenen Fachdidaktiken, Fachwissenschaften sowie aus den Bildungswissenschaften und der Inklusionsp{\"a}dagogik haben im Rahmen des Projektes kooperiert. Sowohl praxisnahe Forschung als auch die Entwicklung neuer Lehrkonzepte sowie Strategien zur Vernetzung innerhalb der Lehrkr{\"a}ftebildung stehen im Fokus dieses Bandes. Die Praxisphasen, die im Rahmen des „Potsdamer Modells der Lehrerbildung" eine zentrale Rolle spielen, wurden in einer großen Studie {\"u}ber alle Praxisphasen untersucht. Der Band gibt interessante Einblicke in die Ergebnisse der Teilprojekte und Anregungen sowohl f{\"u}r die eigene Forschung als auch f{\"u}r Entwicklungsarbeit wie zum Beispiel die Entwicklung neuer Lehrkonzepte. Herausgegeben wird dieser Band von PD Dr. Jolanda Hermanns (Gesamtkoordinatorin PSI-Potsdam und Chemiedidaktikerin).}, language = {de} } @article{SchwingshacklRuzanskaAntonetal.2018, author = {Schwingshackl, Lukas and Ruzanska, Ulrike Alexandra and Anton, Verena and Wallroth, Raphael and Ohla, Kathrin and Knueppel, Sven and Schulze, Matthias Bernd and Pischon, Tobias and Deutschbein, Johannes and Schenk, Liane and Warschburger, Petra and Harttig, Ulrich and Boeing, Heiner and Bergmann, Manuela M.}, title = {The NutriAct Family Study: a web-based prospective study on the epidemiological, psychological and sociological basis of food choice}, series = {BMC public health}, volume = {18}, journal = {BMC public health}, publisher = {BMC}, address = {London}, issn = {1471-2458}, doi = {10.1186/s12889-018-5814-x}, pages = {12}, year = {2018}, abstract = {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.}, language = {en} } @article{HoermannZeiskePiersimonietal.2018, author = {H{\"o}rmann, Ulrich and Zeiske, Stefan and Piersimoni, Fortunato and Hoffmann, Lukas and Schlesinger, Raphael and Koch, Norbert and Riedl, Thomas and Andrienko, Denis and Neher, Dieter}, title = {Stark effect of hybrid charge transfer states at planar ZnO/organic interfaces}, series = {Physical review : B, Condensed matter and materials physics}, volume = {98}, journal = {Physical review : B, Condensed matter and materials physics}, number = {15}, publisher = {American Physical Society}, address = {College Park}, issn = {2469-9950}, doi = {10.1103/PhysRevB.98.155312}, pages = {9}, year = {2018}, abstract = {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.}, language = {en} } @article{StolterfohtCaprioglioWolffetal.2019, author = {Stolterfoht, Martin and Caprioglio, Pietro and Wolff, Christian Michael and Marquez, Jose A. and Nordmann, Joleik and Zhang, Shanshan and Rothhardt, Daniel and H{\"o}rmann, Ulrich and Amir, Yohai and Redinger, Alex and Kegelmann, Lukas and Zu, Fengshuo and Albrecht, Steve and Koch, Norbert and Kirchartz, Thomas and Saliba, Michael and Unold, Thomas and Neher, Dieter}, title = {The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cells}, series = {Energy \& environmental science}, volume = {12}, journal = {Energy \& environmental science}, number = {9}, publisher = {Royal Society of Chemistry}, address = {Cambridge}, issn = {1754-5692}, doi = {10.1039/c9ee02020a}, pages = {2778 -- 2788}, year = {2019}, abstract = {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.}, language = {en} } @article{HirschmuellerKonstantinidisBauretal.2011, author = {Hirschm{\"u}ller, Anja and Konstantinidis, Lukas and Baur, Heiner and M{\"u}ller, Steffen and Mehlhorn, Alexander and Kontermann, Julia and Grosse, Ulrich and S{\"u}dkamp, Norbert P. and Helwig, Peter}, title = {Do changes in dynamic plantar pressure distribution, strength capacity and postural control after intra-articular calcaneal fracture correlate with clinical and radiological outcome?}, series = {Injury : international journal of the care of the injured}, volume = {42}, journal = {Injury : international journal of the care of the injured}, number = {10}, publisher = {Elsevier}, address = {Oxford}, issn = {0020-1383}, doi = {10.1016/j.injury.2010.09.040}, pages = {1135 -- 1143}, year = {2011}, abstract = {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.}, language = {en} }