Refine
Year of publication
Document Type
- Article (32514)
- Doctoral Thesis (6400)
- Monograph/Edited Volume (5406)
- Postprint (2266)
- Review (1786)
- Part of a Book (1012)
- Other (876)
- Conference Proceeding (359)
- Part of Periodical (355)
- Preprint (258)
Language
- English (29201)
- German (21882)
- Spanish (308)
- French (264)
- Italian (111)
- Russian (68)
- Multiple languages (40)
- Hebrew (36)
- Portuguese (25)
- Polish (24)
Is part of the Bibliography
- yes (51992) (remove)
Keywords
- climate change (177)
- Germany (125)
- machine learning (82)
- diffusion (78)
- German (70)
- Deutschland (69)
- Arabidopsis thaliana (67)
- gender (60)
- anomalous diffusion (58)
- climate (58)
Institute
- Institut für Biochemie und Biologie (5415)
- Institut für Physik und Astronomie (5306)
- Institut für Geowissenschaften (3618)
- Institut für Chemie (3403)
- Wirtschaftswissenschaften (2488)
- Department Psychologie (2219)
- Historisches Institut (2076)
- Sozialwissenschaften (1838)
- Institut für Mathematik (1816)
- Institut für Romanistik (1762)
- Department Sport- und Gesundheitswissenschaften (1498)
- Institut für Umweltwissenschaften und Geographie (1454)
- Institut für Germanistik (1387)
- Bürgerliches Recht (1264)
- Institut für Ernährungswissenschaft (1244)
- Department Erziehungswissenschaft (1204)
- Department Linguistik (1170)
- Öffentliches Recht (1109)
- Institut für Informatik und Computational Science (996)
- Institut für Jüdische Studien und Religionswissenschaft (804)
- Institut für Anglistik und Amerikanistik (710)
- Department Grundschulpädagogik (630)
- MenschenRechtsZentrum (568)
- Philosophische Fakultät (563)
- Extern (543)
- Mathematisch-Naturwissenschaftliche Fakultät (541)
- Fachgruppe Politik- & Verwaltungswissenschaft (461)
- Strafrecht (449)
- Strukturbereich Kognitionswissenschaften (414)
- Hasso-Plattner-Institut für Digital Engineering gGmbH (387)
- Fachgruppe Betriebswirtschaftslehre (383)
- Institut für Slavistik (377)
- Hasso-Plattner-Institut für Digital Engineering GmbH (368)
- Institut für Künste und Medien (327)
- Lehreinheit für Wirtschafts-Arbeit-Technik (306)
- Humanwissenschaftliche Fakultät (278)
- Department für Inklusionspädagogik (251)
- WeltTrends e.V. Potsdam (251)
- Fachgruppe Soziologie (211)
- Fachgruppe Volkswirtschaftslehre (187)
- Department Musik und Kunst (179)
- Institut für Philosophie (171)
- Wirtschafts- und Sozialwissenschaftliche Fakultät (165)
- Zentrum für Lehrerbildung und Bildungsforschung (ZeLB) (161)
- Referat für Presse- und Öffentlichkeitsarbeit (138)
- Strukturbereich Bildungswissenschaften (112)
- Klassische Philologie (111)
- Kommunalwissenschaftliches Institut (110)
- Institut für Jüdische Theologie (95)
- Interdisziplinäres Zentrum für Dynamik komplexer Systeme (93)
- Zentrum für Gerechtigkeitsforschung (87)
- Fakultät für Gesundheitswissenschaften (77)
- An-Institute (72)
- Center for Economic Policy Analysis (CEPA) (72)
- Zentrum für Sprachen und Schlüsselkompetenzen (Zessko) (69)
- Vereinigung für Jüdische Studien e. V. (60)
- Zentrum für Umweltwissenschaften (60)
- Universitätsbibliothek (58)
- ZIM - Zentrum für Informationstechnologie und Medienmanagement (47)
- Verband für Patholinguistik e. V. (vpl) (43)
- Zentrum für Qualitätsentwicklung in Lehre und Studium (ZfQ) (38)
- Institut für Religionswissenschaft (35)
- Universitätsleitung und Verwaltung (34)
- Juristische Fakultät (31)
- Zentrum für Lern- und Lehrforschung (30)
- Interdisziplinäres Zentrum für Dünne Organische und Biochemische Schichten (26)
- Moses Mendelssohn Zentrum für europäisch-jüdische Studien e. V. (21)
- Potsdam Research Institute for Multilingualism (PRIM) (18)
- Institut für Lebensgestaltung-Ethik-Religionskunde (17)
- Dezernat 2: Studienangelegenheiten (16)
- Hochschulambulanz (16)
- Potsdam Institute for Climate Impact Research (PIK) e. V. (13)
- Potsdam Transfer - Zentrum für Gründung, Innovation, Wissens- und Technologietransfer (13)
- Arbeitskreis Militär und Gesellschaft in der Frühen Neuzeit e. V. (12)
- Interdisziplinäres Zentrum für Biopolymere (12)
- Sonderforschungsbereich 632 - Informationsstruktur (12)
- Organe und Gremien (11)
- Digital Engineering Fakultät (10)
- Institut für angewandte Familien-, Kindheits- und Jugendforschung e.V. (10)
- Präsident | Vizepräsidenten (9)
- Deutsches MEGA-Konsortialbüro an der Universität Potsdam (8)
- Abraham Geiger Kolleg gGmbH (7)
- Berlin Potsdam Research Group "The International Rule of Law - Rise or Decline?" (7)
- Netzwerk Studienqualität Brandenburg (sqb) (7)
- dbs Deutscher Bundesverband für akademische Sprachtherapie und Logopädie e.V. (7)
- Interdisziplinäres Zentrum für Kognitive Studien (6)
- Interdisziplinäres Zentrum für Musterdynamik und Angewandte Fernerkundung (6)
- Multilingualism (6)
- Patholinguistics/Neurocognition of Language (6)
- Theodor-Fontane-Archiv (6)
- Zentrum für Australienforschung (6)
- Gleichstellungsbeauftragte (5)
- Senat (5)
- Forschungsbereich „Politik, Verwaltung und Management“ (4)
- Gesundheitsmanagement (4)
- Kanonistisches Institut e.V. (4)
- Psycholinguistics and Neurolinguistics (4)
- Akademie für Psychotherapie und Interventionsforschung GmbH (3)
- Kanzler (3)
- Projekte (3)
- UP Transfer (3)
- eLiS - E-Learning in Studienbereichen (3)
- DV und Statistik Wirtschaftswissenschaften (2)
- Kommissionen des Senats (2)
- Language Acquisition (2)
- Zentrale und wissenschaftliche Einrichtungen (2)
- Allgemeine Studierendenausschuss (AStA) (1)
- Applied Computational Linguistics (1)
- Botanischer Garten (1)
- Career Service (1)
- Chief Information Officer (CIO) (1)
- Evangelisches Institut für Kirchenrecht e.V. (1)
- Foundations of Computational Linguistics (1)
- Geschlechtersoziologie (1)
- Interdisziplinäres Zentrum für Massenspektronomie von Biopolymeren (1)
- Phonology & Phonetics (1)
- Potsdam Graduate School (1)
- Präsidialamt (1)
- Redaktion *studere (1)
- Studierendenparlament (StuPa) (1)
- Syntax, Morphology & Variability (1)
- Weitere Einrichtungen (1)
Multijunction solar cells can overcome the fundamental efficiency limits of single-junction devices. The bandgap tunability of metal halide perovskite solar cells renders them attractive for multijunction architectures(1). Combinations with silicon and copper indium gallium selenide (CIGS), as well as all-perovskite tandem cells, have been reported(2-5). Meanwhile, narrow-gap non-fullerene acceptors have unlocked skyrocketing efficiencies for organic solar cells(6,7). Organic and perovskite semiconductors are an attractive combination, sharing similar processing technologies. Currently, perovskite-organic tandems show subpar efficiencies and are limited by the low open-circuit voltage (V-oc) of wide-gap perovskite cells(8) and losses introduced by the interconnect between the subcells(9,10). Here we demonstrate perovskite-organic tandem cells with an efficiency of 24.0 per cent (certified 23.1 per cent) and a high V-oc of 2.15 volts. Optimized charge extraction layers afford perovskite subcells with an outstanding combination of high V-oc and fill factor. The organic subcells provide a high external quantum efficiency in the near-infrared and, in contrast to paradigmatic concerns about limited photostability of non-fullerene cells(11), show an outstanding operational stability if excitons are predominantly generated on the non-fullerene acceptor, which is the case in our tandems. The subcells are connected by an ultrathin (approximately 1.5 nanometres) metal-like indium oxide layer with unprecedented low optical/electrical losses. This work sets a milestone for perovskite-organic tandems, which outperform the best p-i-n perovskite single junctions(12) and are on a par with perovskite-CIGS and all-perovskite multijunctions(13).
A combinatorial study of the effect of in-mixing of various guests on the thermoelectric properties of the host workhorse polymer poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT) is presented. Specifically, the composition and thickness for doped films of PBTTT blended with different polymers are varied. Some blends at guest weight fractions around 10-15% exhibit up to a fivefold increase in power factor compared to the reference material, leading to zT values around 0.1. Spectroscopic analysis of the charge-transfer species, structural characterization using grazing-incidence wide-angle X-ray scattering, differential scanning calorimetry, Raman, and atomic force microscopy, and Monte Carlo simulations are employed to determine that the key to improved performance is for the guest to promote long-range electrical connectivity and low disorder, together with similar highest occupied molecular orbital levels for both materials in order to ensure electronic connectivity are combined.
We present proper motion (PM) measurements within the central region of the Large Magellanic Cloud (LMC), using near-infrared data from the VISTA survey of the Magellanic Cloud system (VMC). This work encompasses 18 VMC tiles covering a total sky area of similar to 28 deg(2). We computed absolute stellar PMs from multiepoch observations in the K-s filter over time baselines between similar to 12 and 47 months. Our final catalogue contains similar to 6322 000 likely LMC member stars with derived PMs. We employed a simple flat-rotating disc model to analyse and interpret the PM data. We found a stellar centre of rotation (alpha(0) = 79.95 degrees(+0.22)(-0.23), delta(0) = -69.31 degrees(+0.12)(-0.11)) that is in agreement with that resulting from Hubble Space Telescope data. The inferred viewing angles of the LMC disc (i = 33.5 degrees(+1.2)(-1.3), Theta = 129.8 degrees(+1.9)(-1.9)) are in good agreement with values from the literature but suggest a higher inclination of the central parts of the LMC. Our data confirm a higher rotation amplitude for the young (less than or similar to 0.5 Gyr) stars compared to the intermediate-age/old (greater than or similar to 1 Gyr) population, which can be explained by asymmetric drift. We constructed spatially resolved velocity maps of the intermediate-age/old and young populations. Intermediate-age/old stars follow elongated orbits parallel to the bar's major axis, providing first observational evidence for x(1) orbits within the LMC bar. In the innermost regions, the motions show more chaotic structures. Young stars show motions along a central filamentary bar structure.
Solid organ transplant (SOT) recipients receive therapeutic immunosuppression that compromises their immune response to infections and vaccines. For this reason, SOT patients have a high risk of developing severe coronavirus disease 2019 (COVID-19) and an increased risk of death from severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection. Moreover, the efficiency of immunotherapies and vaccines is reduced due to the constant immunosuppression in this patient group. Here, we propose adoptive transfer of SARS-CoV-2-specific T cells made resistant to a common immunosuppressant, tacrolimus, for optimized performance in the immunosuppressed patient. Using a ribonucleoprotein approach of CRISPR-Cas9 technology, we have generated tacrolimus-resistant SARS-CoV-2-specific T cell products from convalescent donors and demonstrate their specificity and function through characterizations at the single-cell level, including flow cytometry, single-cell RNA (scRNA) Cellular Indexing of Transcriptomes and Epitopes (CITE), and T cell receptor (TCR) sequencing analyses. Based on the promising results, we aim for clinical validation of this approach in transplant recipients. Additionally, we propose a combinatory approach with tacrolimus, to prevent an overshooting immune response manifested as bystander T cell activation in the setting of severe COVID-19 immunopathology, and tacrolimus-resistant SARS-CoV-2-specific T cell products, allowing for efficient clearance of viral infection. Our strategy has the potential to prevent severe COVID-19 courses in SOT or autoimmunity settings and to prevent immunopathology while providing viral clearance in severe non-transplant COVID-19 cases.
Background and aims: Accurate and user-friendly assessment tools quantifying alcohol consumption are a prerequisite to effective prevention and treatment programmes, including Screening and Brief Intervention. Digital tools offer new potential in this field. We developed the ‘Animated Alcohol Assessment Tool’ (AAA-Tool), a mobile app providing an interactive version of the World Health Organization's Alcohol Use Disorders Identification Test (AUDIT) that facilitates the description of individual alcohol consumption via culturally informed animation features. This pilot study evaluated the Russia-specific version of the Animated Alcohol Assessment Tool with regard to (1) its usability and acceptability in a primary healthcare setting, (2) the plausibility of its alcohol consumption assessment results and (3) the adequacy of its Russia-specific vessel and beverage selection. Methods: Convenience samples of 55 patients (47% female) and 15 healthcare practitioners (80% female) in 2 Russian primary healthcare facilities self-administered the Animated Alcohol Assessment Tool and rated their experience on the Mobile Application Rating Scale – User Version. Usage data was automatically collected during app usage, and additional feedback on regional content was elicited in semi-structured interviews. Results: On average, patients completed the Animated Alcohol Assessment Tool in 6:38 min (SD = 2.49, range = 3.00–17.16). User satisfaction was good, with all subscale Mobile Application Rating Scale – User Version scores averaging >3 out of 5 points. A majority of patients (53%) and practitioners (93%) would recommend the tool to ‘many people’ or ‘everyone’. Assessed alcohol consumption was plausible, with a low number (14%) of logically impossible entries. Most patients reported the Animated Alcohol Assessment Tool to reflect all vessels (78%) and all beverages (71%) they typically used. Conclusion: High acceptability ratings by patients and healthcare practitioners, acceptable completion time, plausible alcohol usage assessment results and perceived adequacy of region-specific content underline the Animated Alcohol Assessment Tool's potential to provide a novel approach to alcohol assessment in primary healthcare. After its validation, the Animated Alcohol Assessment Tool might contribute to reducing alcohol-related harm by facilitating Screening and Brief Intervention implementation in Russia and beyond.
Simulating the space weather in the AU Mic system: stellar winds and extreme coronal mass ejections
(2022)
Two close-in planets have been recently found around the M-dwarf flare star AU Microscopii (AU Mic). These Neptune-sized planets (AU Mic b and c) seem to be located very close to the so-called "evaporation valley" in the exoplanet population, making this system an important target for studying atmospheric loss on exoplanets. This process, while mainly driven by high-energy stellar radiation, will be strongly mediated by the space environment surrounding the planets. Here we present an investigation of this last area, performing 3D numerical modeling of the quiescent stellar wind from AU Mic, as well as time-dependent simulations describing the evolution of a highly energetic coronal mass ejection (CME) event in this system. Observational constraints on the stellar magnetic field and properties of the eruption are incorporated in our models. We carry out qualitative and quantitative characterizations of the stellar wind, the emerging CMEs, as well as the expected steady and transient conditions along the orbit of both exoplanets. Our results predict extreme space weather for AU Mic and its planets. This includes sub-Alfvenic regions for the large majority of the exoplanet orbits, very high dynamic and magnetic pressure values in quiescence (varying within 10(2)-10(5) times the dynamic pressure experienced by Earth), and an even harsher environment during the passage of any escaping CME associated with the frequent flaring observed in AU Mic. These space weather conditions alone pose an immense challenge for the survival of exoplanetary atmospheres (if any) in this system.
Introduction
Attempts to improve cognitive abilities via transcranial direct current stimulation (tDCS) have led to ambiguous results, likely due to the method's susceptibility to methodological and inter-individual factors. Conventional tDCS, i.e., using an active electrode over brain areas associated with the targeted cognitive function and a supposedly passive reference, neglects stimulation effects on entire neural networks.
Methods
We investigated the advantage of frontoparietal network stimulation (right prefrontal anode, left posterior parietal cathode) against conventional and sham tDCS in modulating working memory (WM) capacity dependent transfer effects of a single-session distractor inhibition (DIIN) training. Since previous results did not clarify whether electrode montage drives this individual transfer, we here compared conventional to frontoparietal and sham tDCS and reanalyzed data of 124 young, healthy participants in a more robust way using linear mixed effect modeling.
Results
The interaction of electrode montage and WM capacity resulted in systematic differences in transfer effects. While higher performance gains were observed with increasing WM capacity in the frontoparietal stimulation group, low WM capacity individuals benefited more in the sham condition. The conventional stimulation group showed subtle performance gains independent of WM capacity.
Discussion
Our results confirm our previous findings of WM capacity dependent transfer effects on WM by a single-session DIIN training combined with tDCS and additionally highlight the pivotal role of the specific electrode montage. WM capacity dependent differences in frontoparietal network recruitment, especially regarding the parietal involvement, are assumed to underlie this observation.
1. Bölüm: Türkiye’den İsrail’e Göç Etmiş Yahudiler
Pandemi, alışkanlıklarımızda, planlarımızda, hayata bakış açımızda geri dönülemez değişiklikler yaptı. Benim payıma düşen ise uzun zamandır üzerinde çalıştığım doktora tezimin olmazsa olmaz parçası olan İsrail’de yapmayı planladığım alan araştırmasının iki sene boyunca sürekli ertelenmesi oldu. Önce aşı sırası bekledim sonra birinci ve ikinci doz arasındaki on dört günü; bu sırada en çok girdiğim internet sitesi İsrail Dışişleri Bakanlığı’nın seyahat düzenlemelerini paylaştığı sayfası oldu. Kimi zaman detaylar arasında kayboldum, bürokrasinin çarkları arasında “bu madde acaba işime yarar mı?” diye beyhude akıllar yürüttüm. Tel Aviv Üniversitesi’nden alan araştırmamın merakla desteklendiğini içeren davet mektupları aldım ama pandemi merakla desteklenen çalışmaya iki kez baskın çıktı ve vize başvurum iki kez reddedildi. Sonuç olarak 2020’nin ikinci yarısında yapmam gereken alan araştırmasını 2022 yılının Şubat ayına kadar ertelenmek zorunda kaldım.
Wir Mendes
(2022)
Frankfurt an der Oder verfügte einst über blühendes jüdisches Leben. Es gab jüdische Geschäfte und Bankhäuser, ein jüdisches Kinderheim und Krankenhaus, Synagogen und Mikwen sowie einen großen jüdischen Friedhof. Die Geschichte der Bankiersfamilie Mende, die 30 Jahre lang in einem Haus am Lennépark in der Halben Stadt lebte, steht symbolisch für die Zeit des liberalen deutsch-jüdischen Bürgertums an der Schwelle zum 20. Jahrhundert und gibt uns einen Einblick in ihren Alltag und ihr häusliches Leben.
Die Zeugnisse von Max Bamberger und Käthe Mende dokumentieren die schweren ersten Jahre im 17. Jahrhundert als Neuankömmlinge in Frankfurt an der Oder, die Auswirkungen der Aufklärung, die spannende Zeit der Industrialisierung und die Wirren des Ersten Weltkrieges. Auch gewinnen wir Aufschluss über die Zeit der Shoah, durch die deutsch-jüdisches Leben ein jähes Ende finden sollte. Nicht zuletzt stellen die Memoiren von Max Bamberger und Käthe Mende einen wichtigen Beitrag zur Frankfurter Stadtgeschichte dar, die — versehen mit vielen amüsanten Anekdoten — überdies äußerst unterhaltsam sind.
Die Grundlage dafür bildeten die Familienerinnerungen der Sozialpädagogin und Nationalökonomin Käthe Mende und des Übersetzers Max Bamberger, die sich als Schreibmaschinenmanuskripte im Leo Baeck Institut für deutsch-jüdische Geschichte in New York befinden. Ergänzt werden die Berichte durch historische Einordnungen und Erläuterungen sowie eine Einführung in die Geschichte des jüdischen Frankfurts. Hervorgegangen ist die Edition aus einem langjährigen gemeinsamen Forschungsprojekt der Jüdischen Studien an der Universität Potsdam (Dr. Michael Heinzmann und Dr. Katja Martin) mit dem Institut für angewandte Geschichte – Gesellschaft und Wissenschaft im Dialog e.V. (Dr. Magdalena Abraham-Diefenbach und Dr. Markus Nesselrodt) und dem Selma Stern Zentrum für Jüdische Studien Berlin-Brandenburg, gefördert und unterstützt durch die Szloma-Albam-Stiftung.
Tod und Krise
(2021)
Der Tod wird oftmals als größtmögliche menschliche Krise wahrgenommen. Doch wie definiert sich Krise im Kontext von Tod und Sterben? Dieser Frage geht der vorliegende Sammelband im zeitlichen Rahmen des langen 19. Jahrhunderts nach, welches sich durch zahlreiche Brüche und Veränderungen im Umgang mit dem Tod und den Verstorbenen auszeichnet.
Die Beiträge sind das Ergebnis eines gleichnamigen Symposiums im Jahr 2019. Aus interdisziplinärer Perspektive thematisieren Jungforscher:innen Bestattungspraktiken im Krieg und in Seuchenzeiten, setzen sich mit Innovationen im europäischen Bestattungswesen und mit den daraus resultierenden Spannungsverhältnissen auseinander. Sie problematisieren die Repräsentationsbedürfnisse des Adels im Zusammenhang mit dem Tod und untersuchen Erinnerungskulturen sowie das bewusste Verdrängen von Todeskontexten. Hierbei wird der Fokus auf die Akteur:innen gelegt, deren Intentionen und ihr konkretes Handeln. Krisen fungieren zum einen als Motor für neue Entwicklungen. Zum anderen verdeutlichen sie bisweilen eine erstaunliche Innovationsresistenz beim Umgang mit dem Tod. Eines aber zeichnet Krisen maßgeblich aus: sie zwingen die Betroffenen zu einer Entscheidung.