Results 41 to 50 of about 458,062 (302)

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

Advanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu, Florian Maudet, Thanh Luan Phan, Wassim Hamouda, Richard Schroedter, Ahmet Samil Demirkol, Ronald Tetzlaff, Veeresh Deshpande, Catherine Dubourdieu   +8 more
wiley   +1 more source

Learning with worked-out problems in Manufacturing Technology: The effects of instructional explanations and self-explanation prompts on acquired knowledge acquisition, near and far transfer performance [PDF]

, 2011
In the present research, two different explanatory approaches – namely, instructional explanation and self-explanation prompts – were applied in worked-out-problem-based learning (learning with worked-out problems) in a computer-assisted instructional ...
Lai, Chee Sern, Spöttl, Georg, Straka, Gerald A.   +2 more
core   +1 more source

A Universal Interfacial Dipole Strategy for Defect Suppression in Inverted Perovskite Solar Cells With Tunable Bandgaps

Advanced Functional Materials, EarlyView.
A 2D heterointerface with a two‐site anchor bridge suppresses nonradiative recombination at the perovskite/C₆₀ interface by reducing surface defects, elevating the Fermi level, and strengthening the electric field. This strategy enables efficient electron extraction, delivering 26.32% efficiency, 1.217 V Voc, excellent operational stability, and broad ...
Chaohui Li, Hyoungwon Park, Fabian Streller, Klaus Götz, Jiwon Byun, Shudi Qiu, Zhangyu Yuan, Jonas Englhard, Andrej Vincze, Zijian Peng, Lirong Dong, Yanxue Wang, Chao Liu, Jingjing Tian, Mingjie Feng, Peichun Liao, Fu Yang, Andreas Späth, Andres Osvet, Thomas Heumueller, Marcus Halik, Silke H. Christiansen, Tobias Unruh, Julien Bachmann, Rainer H. Fink, Ning Li, Larry Lüer, Christoph J. Brabec   +27 more
wiley   +1 more source

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

Advanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria, Meng Yin, Stefan Neuhauser, Vlasis G. Mavrantzas, Ying Chen, Ken Suzuki, Andreas T. Güntner   +6 more
wiley   +1 more source

Clustomesogen Showing Sub‐Zero Liquid Crystal Properties: Supramolecular Assembly Between Cs2[Mo6Ii8(OCOC2F5)6] and Hexaethylenoxide Containing Mesogenic Dimers

Advanced Materials, EarlyView.
Associating a red‐NIR phosphorescent octahedral hexanuclear molybdenum cluster compound with hexaethyleneoxide chains bearing mesogenic units on both ends leads to an emissive hybrid liquid crystal showing mesomorphism on a very unusual temperature range down to −25°C.
Killiann Heinz, Jeanne Rebours, Zoulikha Zerrouqi, Noée Dumait, Maria Amela‐Cortes, Nikolai Scheuring, Sara Simonovska, Sebastian Marino, Max Ebert, Stéphane Cordier, Sabine Laschat, Yann Molard   +11 more
wiley   +1 more source

Low Fertility of Highly Educated Women: The Impact of Child Care Infrastructure [PDF]

, 2007
Most studies of the negative correlation between fertility and education treat education as exogenously raising wages and the cost of child rearing, thus reducing fertility. I relax these assumptions in two respects.
Schrage, Andrea
core  

Low Resistance Interphase Formation at the PEO‐LiTFSI|LGPS Interface in Lithium Solid‐State Batteries

Advanced Materials Interfaces, EarlyView.
Interfacial charge transfer and low‐resistance interphase formation between PEO‐based polymer and Li10GeP2S12 solid electrolytes are investigated using multi‐electrode impedance spectroscopy and advanced analytical techniques such as XPS and ToF‐SIMS.
Ujjawal Sigar, Timo Weintraut, Sebastian L. Benz, Semih Engün, Sascha Kremer, Anja Henss, Felix H. Richter   +6 more
wiley   +1 more source

Routine and Adaptive Experts: Individual Characteristics and Their Impact on Multidigit Arithmetic Strategy Flexibility and Mathematics Achievement

Journal of Numerical Cognition
Motivated by a curriculum privileging number-based strategies but national tests highlighting students’ reliance on standard algorithms, this study analyses 2,216 Danish Grade 3, 6 and 8 students’ solutions to various multidigit arithmetic tasks, each ...
Lóa Björk Jóelsdóttir, Pernille Bødtker Sunde, Peter Sunde, Paul Andrews   +3 more
doaj   +1 more source

Förderung der mehrperspektivischen professionellen Wahrnehmung von Klassenführung und Lernunterstützung im naturwissenschaftlichen Sachunterricht

Herausforderung Lehrer*innenbildung
Im naturwissenschaftlichen Sachunterricht lassen sich lernförderliche und -hinderliche Wechselwirkungen zwischen den Qualitätsdimensionen der Klassenführung und der Lernunterstützung beobachten.
Verena Zucker, Alena Lehmkuhl, Jennifer Janeczko, Robin Junker, Manfred Holodynski, Nicola Meschede   +5 more
doaj   +1 more source

Bildung als Bürgerrecht oder: wozu Bildung?

Espaço Pedagógico, 2017
Der Text befasst sich mit dem Schlüsselbegriff der deutschen Pädagogik: “Bildung”. Einleitend werden dessen semantische Unschärfe und Doppeldeutigkeit benannt sowie terminologische Abgrenzungen zu den Nachbarbegriffen “Ausbildung” und “Erziehung ...
Timo Hoyer
doaj   +1 more source