Tokyo University of Science

Machine Learning on Heterogeneous, Edge, and Quantum Hardware for Particle Physics

The next generation of particle physics experiments will face an era of challenges in data acquisition, due to unprecedented data rates and volumes along with extreme environments and operational constraints. Harnessing these data for scientific discovery demands real-time infere...

Generation of Trityl Cation Derivatives from Triarylmethyl Azides for C–F Azidation of o -Hydrosilyl-Substituted Benzotrifluorides

Abstract In this study, the equilibrium formation of trityl cations from trityl azide derivatives was examined under various conditions. The generation of trityl cations was promoted by the presence of 1,1,1,3,3,3-hexafluoro-2-propanol, electron-donating substituents on trityl az...

Comparative CO2 Electroreduction by Cu7 Nanoclusters across Molecular, 1D, and 2D Reticular Architectures

Abstract Reticular chemistry is typically invoked to organize molecular building blocks, yet its ability to reprogram the intrinsic reactivity of atomically precise metal clusters remains largely unexplored. Here, we demonstrate dimensional reticulation as a decisive lever for tu...

Damage identification and model updating using bridge displacement under moving vehicles with uncertain weight

Bridge damage incurred during long-term service leads to discrepancies between the physical structure and its digital twin finite element (FE) model, necessitating regular model updates to ensure reliable health monitoring. Traditional methods typically adopt a two-step framework...

Automated quantification of spinal axis distortion for behavioral assessment after spinal cord injury in mice

Spinal cord injury (SCI) causes persistent locomotor deficits that are commonly evaluated in mouse SCI models using observational scoring systems such as the Basso Mouse Scale, which primarily assesses hindlimb function. Here, we established an automated behavioral analysis pipel...

Watanabe–Strogatz invariants in the Liouvillian dynamics of coupled phase oscillators via the Koopman framework

Abstract In dynamical systems, invariants, i.e. constants of motion conserved along the trajectory, play important roles in characterizing the system's dynamical behaviour. Recent applications of the Koopman operator framework to nonlinear dynamical systems have provided new insi...

RBD-down stabilization of SARS-CoV-2 spike enhances cross-neutralizing antibody responses by redirecting immunodominance toward conserved epitopes

The continuous emergence of SARS-CoV-2 variants has enabled partial escape from neutralizing antibodies, necessitating frequent updates of vaccine antigens. These observations motivate vaccine strategies that can redirect antibody responses toward conserved regions of the spike (...

Metal‐Templated Dynamic Reorganization of Macrocyclic Gold Complexes Toward an N ‐Doped Cycloparaphenylene Catenane

ABSTRACT Self‐assembly based on a single dynamic bond smoothly converges on its thermodynamic product, but this does not extend to an interlocked architecture composed of strained, fully π ‐conjugated rings such as [ n ]cycloparaphenylenes ([ n ]CPPs), because assembling such an...

Metal‐Templated Dynamic Reorganization of Macrocyclic Gold Complexes Toward an N ‐Doped Cycloparaphenylene Catenane

ABSTRACT Self‐assembly based on a single dynamic bond smoothly converges on its thermodynamic product, but this does not extend to an interlocked architecture composed of strained, fully π ‐conjugated rings such as [ n ]cycloparaphenylenes ([ n ]CPPs), because assembling such an...

Hour-scale response of low-Earth-orbit satellite altitude to extreme geomagnetic storms revealed by the NinjaSat CubeSat during the 2024 solar maximum

Abstract Extreme geomagnetic storms accelerate low-Earth-orbit satellite decay by inflating the thermosphere, yet the hour-scale pathway from solar-wind energy to atmospheric heating is poorly understood. Using the GNSS receiver of the NinjaSat CubeSat ( $$\sim 500$$ km, $$97^\ci...

Fast Bosonic Control via Multiphoton Qubit-Oscillator Interactions

We study the problem of n -fold rotationally symmetric bosonic state preparation, which is of great importance to bosonic quantum error correction, using a multiphoton interaction between an oscillator and an auxiliary qubit. We present an n -photon Law-Eberly ( n LE) protocol th...

Convergent validity of measures of daily functioning in older adults

INTRODUCTION: Although information on daily functioning is needed for accurate diagnoses of neurocognitive disorders, little has been published on the psychometric properties of measures of daily functioning. Convergent validity is one such psychometric property that examines the...

Sommerfeld enhancement from unstable final-state particles in dark matter annihilation

A bstract We study the Sommerfeld enhancement of the annihilation cross section of dark matter into heavier unstable particles. In this process, the annihilation products become non-relativistic near the kinematical threshold. If they experience long-range interactions with each...

Benchmarking token mixers for efficient transformer-based learned video compression

Learned video compression has rapidly evolved, with recent approaches demonstrating potential in complex context modeling. However, these performance gains often come at the cost of significant complexity in both framework design and computation-heavy modules, obscuring the effic...

Multiscale Rheo-Optical and Scattering Signatures of Deformation-Induced Anisotropy in Aqueous Cellulose Nanocrystal Suspensions under Large-Amplitude Oscillatory Shear

Abstract Aqueous surface-charged cellulose nanocrystal (CNC) suspensions exhibit concentration-dependent viscosity growth, gelation, and deformation-induced anisotropy, but the concentration and strain-amplitude ranges over which these responses emerge are not necessarily the sam...

Emergence of Goal‐Directed Behaviors via Active Inference With Self‐Prior

ABSTRACT Infants often exhibit goal‐directed behaviors, such as reaching for a sensory stimulus, even when no external reward criterion is provided. These intrinsically motivated behaviors facilitate spontaneous exploration and learning of the body and environment during early de...

ROS function during the early phase of vascular regeneration in Arabidopsis.

When vascular tissues are damaged, plants induce site-specific formation of vascular stem cells that proliferate and differentiate into xylem and phloem, restoring vascular continuity. In addition, reactive oxygen species (ROS) are rapidly generated at wound sites in response to...

Symmetry and Asymmetry in Fe(II)–Salen Speciation Networks: A Category-Theoretic and Bayesian Framework

Fe(II)–salen chemistry is often summarized by a single synthetic arrow, although ligand condensation, hydrolysis, oxidation, axial coordination, and formation of unanticipated products can coexist under realistic conditions. We develop a compositional framework in which chemicall...

Nucleophilic Vinylic Substitution of 2,2‐Diaryl‐Substituted 1‐Chlorovinyl p ‐Tolyl Sulfoxides With Alkynyllithiums

Nucleophilic vinylic substitution (S N V) reactions of 2,2‐diaryl‐substituted 1‐chlorovinyl p ‐tolyl sulfoxides with alkynyllithiums yield 2‐chloro‐substituted conjugated enynes via C sp ─ bond formation. Sulfoxide bearing two 4‐chlorophenyl groups at the 2‐position is highly rea...

Ratiometric Luminescent Thermo‐Hygrometry, Metal‐Dependent Second Harmonic Generation, and Humidity‐Variable Magnetic Relaxation in a Manganese(II)‐Doped Zinc(II) Molecular Halide

ABSTRACT Molecular materials based on metal complexes can link optical, electrical, and magnetic properties, all sensitive to external stimuli. This feature opens a pathway for their exploration as highly efficient sensors and advanced switches. We report the synthetic strategy f...