Nagoya University

Diffusion Geometry for Galaxy Bulk-Flow Reconstruction II: Three-Dimensional Potential-Flow Reconstruction from Radial Velocities

Reconstructing a three-dimensional velocity field from radial peculiar velocities is non-identifiable because the radial observation operator has a large null space, even when a finite design matrix is formally full rank. Building on Paper I, we construct a potential-flow-constra...

Neighborhood interaction at age 65 and subsequent initiation and cessation of social participation in Japanese older adults: the NISSIN Project

Whether neighborhood interaction is differently associated with initiation and cessation of social participation in early old age remains unclear. We analyzed 1,688 Japanese adults surveyed at ages 65 and 70. Initiation and cessation were examined separately using modified Poisso...

Directional hydrogen migration in acetonitrile dication in asymmetric ultrashort intense laser fields

We investigate intramolecular hydrogen migration in acetonitrile dication in phase-controlled ω-2ω intense laser fields (800 and 400 nm, 3.3 × 1014 W/cm2) using three-dimensional coincidence ion momentum imaging. The two-body Coulomb explosion pathway, CH3CN2+→CH3++CN+, exhibits...

Upward versus downward pelvic obliquity in dysplastic hip osteoarthritis: direction-specific factors associated with residual obliquity after total hip arthroplasty

Introduction: Pelvic obliquity (PO) in dysplastic hip osteoarthritis may tilt upward (U-PO) or downward (D-PO) on the affected side. U-PO tends to persist more frequently after total hip arthroplasty (THA) than D-PO; however, the contributing factors remain unclear. This study in...

Computational and Experimental Comparison of CLF5605 and Roamx-0201 Martian Helicopter Rotor Airfoils

This study compares the performance of the CLF5605 rotor airfoil—which flew on Ingenuity—with that of a new optimized roamx-0201 airfoil designed for Martian conditions at NASA Ames Research Center. Specifically, performance is studied at a Reynolds number of 20,000 and a Mach nu...

Molecular dynamics simulation study on sound dispersion and acoustic relaxation of water in wide temperature and density ranges

Frequency-dependent complex shear and bulk viscosities of water from supercooled to supercritical conditions were evaluated by means of molecular dynamics simulations in order to understand the behavior of sound dispersion in the nm−1 wavenumber region. In the liquid-like density...

Frequency-dependent shear and bulk viscosity of aqueous and non-aqueous lithium battery electrolytes

Transverse ultrasound was used to examine the frequency-dependent shear viscosities of three lithium bis(trifluoromethanesulfonyl)imide-based electrolytes: aqueous, non-aqueous, and hybrid aqueous-organic solutions. Frequency-dependent bulk viscosities of two of the electrolytes...

Development and validation of the Japanese version of the psychological preparedness for disaster threat scale

Abstract Background Japan is highly vulnerable to hydro-meteorological hazards such as typhoons, severe storms, and flooding, which cause recurring damage to life and property. Consequently, there is a need for a culturally adapted tool to assess individuals’ psychological readin...

Homogeneity-based zoning using aggregated mobile phone GPS data

This paper proposes a method for constructing zones with homogeneous traffic behavior by applying the REDCAP clustering method (Guo Citation2008) to aggregated and anonymized mobile phone GPS data (AMP data). Conventional traffic surveys often aggregate several township units int...

Triangulating Evidence on Serum Uric Acid and Cancer Risk: Consistent Inverse Associations With Lung Cancer

ABSTRACT We examined the association between serum uric acid (UA) levels and cancer incidence through a conventional observational and two‐sample Mendelian randomization (MR) study in the same population (triangulation). We followed 13,695 individuals aged 35–69 years for cancer...

Diboron‐Embedded Heteroacenes With Systematically Varied Central π‐Skeletons and Fusion Modes

ABSTRACT Diboron‐embedded heteroacenes with systematically varied central π‐skeletons and fusion modes were synthesized via one‐pot cyclative borylation using benzene, thieno[3,2‐ b ]thiophene, or dithieno[3,2‐ b :2′,3′‐ d ]thiophene cores, affording six derivatives with C 2h or...

Adaptive undulatory locomotion of snake-like robots in dynamic viscous environments via deep reinforcement learning

This paper demonstrates how deep reinforcement learning (DRL) enables adaptive locomotion of snake-like robots in dynamically changing viscous environments. Traditional control methods exhibit inherent performance limitations in such environments. The fundamental challenge of thi...

Coordinating Mesopore Geometry and Interfacial Water Dynamics for Iron‐Site Evolution in Nitrate Electroreduction

ABSTRACT Developing electrocatalysts with active sites that undergo structural evolution under operating conditions remains a challenge in electrochemical nitrate reduction. Here, we use single‐crystalline mesoporous metal–organic frameworks (MOFs) with distinct pore geometries t...

Taxonomic study of the family Pedicellasteridae (Asteroidea: Forcipulatida) from Japanese waters, with descriptions of two new species and one new record

Two new deep-sea species of the family Pedicellasteridae from Japanese waters – Ampheraster phantasma sp. n. and Anteliaster seisuiae sp. n. – are described. These new species represent the first discovery of the genera Ampheraster and Anteliaster from this region. We also report...

Systematic evaluation of microRNA stability during long term storage of urine

Despite their promising utility as biomarkers for disease prediction, the stability of microRNAs (miRNAs) encapsulated in urinary extracellular vesicles (uEVs) during long-term storage remains insufficiently characterized, limiting both research throughput and clinical applicatio...

Development of a psychological preparedness scale for elementary school students (C-PPDTS) and a preliminary evaluation of a disaster education program

Abstract Background Disaster risk reduction (DRR) education is essential to protecting children from increasingly severe hydrometeorological events. Traditional DRR education often relies on fear appeals that can induce overwhelming anxiety in children. Psychological preparedness...

Synchrotron-Based 3D Operando Chemical Imaging of Battery Electrodes: Toward Rational Design of Electrochemical Devices for Green Transformation

Achieving green transformation (GX) and carbon neutrality requires the large-scale deployment of renewable energy and the electrification of broad sectors of society. Realizing this transition depe...

Estimation of auroral emission altitude in the region of the ISS magnetic footprint during a relativistic electron precipitation event observed by ISS-CALET

We report a multi-MeV relativistic electron precipitation (REP) event as observed by the CALorimetric Electron Telescope and the Monitor of All-sky X-ray Image aboard the International Space Station, together with low-cost twin all-sky auroral imagers installed at Athabasca, Cana...

Equality of Hölder exponents for distribution functions of Gibbs measures

Abstract Pointwise Hölder exponents describe the degree of regularity of a function near a point. For a function f : R → R , a number α > 0 and a point t 0 ∈ R , write f ∈ C α ( t 0 ) if there exist a constant C > 0 , a number h > 0 and a polynomial P of degree less than α such t...

Taiwan area heavy rain observation and prediction experiment (TAHOPE): overview and some scientific results

Abstract “Taiwan Area Heavy rain Observation and Prediction Experiment” (TAHOPE) was originally planned to be conducted from August 2019 to July 2022 to study Mei-Yu fronts, mesoscale convective systems (MCSs), landfalling typhoons and afternoon thunderstorms near Taiwan. The Pre...