Doshisha University

Self-organized spectral adjustment in echolocation sounds within group-flying bats

Self-organized behaviour has been extensively studied in group dynamics in animals, with a strong focus on movement coordination in species like fish and birds. By contrast, far less attention has been paid to vocal interactions within animal groups. Here, we unveil a self-organi...

Distributionally Robust Decision-Making under Ambiguity: Case Study of Water Environmental Management

Decision-making under uncertainty is ubiquitous in environmental project planning. Environmental processes such as a streamflow discharge often present a subexponential memory, where the autocorrelation persists for a long time. In addition, optimization problems driven by enviro...

Biophysical and structural characterisation of a quasi-stable toxic dimer of amyloid Aβ42 peptide tethered at position 34

Abstract Non-fibrillar oligomeric forms of amyloid β (Aβ) mediate toxicity in Alzheimer’s disease (AD) with Aβ accumulation preceding tau aggregation and synaptic damage. Aβ oligomerization is thought to initiate from the smallest stable unit, the dimer, yet structural details of...

The Temporal Resolution Needed for Speech Intelligibility Assessed with Mosaic Speech: Effects of Block Duration, Age, and Word Familiarity

Background/Objectives: Mosaic speech was used to further investigate the auditory system’s temporal resolution needed for speech intelligibility. Mosaic speech is a form of degraded speech segmented in frequency × time blocks with no discernible temporal fine structure and with d...

Evidence for latent regularities in echolocation-guided flight behaviour of bats

Abstract Echolocating bats navigate complex environments with remarkable agility, yet it remains unclear whether their flight trajectories are governed by reproducible internal policies shared within a species and across the controlled environments examined. To address this quest...