University of Electro-Communications

Pinwheel Scheduling with Real Periods

For a sequence of tasks, each with a positive integer period, the pinwheel scheduling problem involves finding a valid schedule in the sense that the schedule performs one task per day and each task is performed at least once every consecutive days of its period. It had been conj...

Isotropic-carrier-transport perovskite single crystal enables high-photoresponsivity solar-blind photodetectors for selective flame monitoring

Low-dimensional halide perovskites are promising candidates for solar-blind ultraviolet photodetectors. However, simultaneously achieving high photoresponsivity and low dark current remains challenging, due to the restricted transport and collection of photogenerated carriers cau...

Solvent-Dependent Role of SnF2 in DMSO-Free Tin Halide Perovskite Solar Cells

Abstract SnF2 is widely used as an additive to suppress Sn2+ oxidation in tin perovskite solar cells (Sn-PVK-PVs). However, its effect differed between the two processing routes examined here. In this study, we evaluated the influence of SnF2 addition on dimethyl sulfoxide (DMSO)...

Advanced Multimodal X-ray Visualization Techniques for Unraveling Catalytic Performance and Degradation Mechanisms of Metal Nanoparticles in Fuel Cells

Abstract This Account highlights the transformative advances enabled by the world-first BL36XU beamline dedicated to in situ and operando characterization of metal nanoparticles and adsorbed species in polymer electrolyte fuel cells (PEFCs). While PEFCs hold great promise for sus...

Membership categorization in children’s pretend play

Abstract Drawing on data from 24 hours of video-recorded interaction of two bilingual (Korean, English) children aged between three and five, we use multimodal conversation analysis and membership categorization analysis to show how pretend membership categories are invoked and m...