Yokohama National University

Spectral signatures of zenith sky radiance from surface-based sky radiometers: implications for clear- and cloudy-sky detection

Abstract. Accurate identification of clear- and cloudy-sky conditions is essential for reliable aerosol and cloud retrievals from ground-based remote sensing observations. This study investigates the spectral characteristics of zenith radiances measured by SKYNET sky radiometers...

Challenges in Monitoring Extreme Environmental Conditions in the Brazilian Amazon: Impacts on Navigation Safety

Inland navigation in the Brazilian Amazon plays an important role in transportation of personnel and cargo, including the development of activities of social relevance. However, the occurrence of extreme environmental conditions can pose risks to the safety of operating vessels....

Resolution Dependence in a Global Atmospheric Simulation From km to 220 m Grid Spacing

Abstract We conducted a 220‐m mesh simulation over the global domain with realistic topography. This can be called a first “global large‐eddy simulation” (GLES) for deep convection. The resolution dependence across km‐ to sub‐km scales and sensitivity to turbulence schemes are in...

Mechanisms of Associational Effects of Sika Deer Browsing: Relationships Between Plant Nutrients and Foraging Behavior

ABSTRACT The susceptibility of plants to ungulate herbivory is affected by herbivore foraging selection, which is influenced by neighboring plants within a patch (associational effect). However, the role of plant nutritional characteristics in herbivore foraging behavior, which g...

Benefit-principle accounting of CO₂ emissions in the global textile and clothing value chain

Existing emission accounting frameworks assign CO₂ responsibility to producers or final consumers but do not identify factor-provider beneficiaries within bilateral trade flows. This study extends benefit-principle emissions (BPE) accounting by introducing a trade-pattern decompo...

Tailoring electrolyte salt concentration to achieve reversible Li storage in pure-Ni layered oxide

Abstract Modulating electrolyte formulation is an efficient strategy to mitigate side reactions at the electrode/electrolyte interface and thereby enhance the cycling stability of lithium batteries. Herein, the effects of electrolyte salt concentration on the solution structure a...

Quantitative Imaging of Water Diffusion in Brain Parenchyma at Cellular Resolution Using Stimulated Raman Scattering Microscopy

ABSTRACT The diffusion dynamics of water within the cerebral cortex regulate solute transport and are fundamental to overall brain function. However, cellular‐level microscopic water dynamics within the brain parenchyma remain poorly understood due to a lack of direct, high‐resol...

A C 3-Symmetric Phloroglucinol Derivative for Tuning the Structures and Luminescence of Solvates

Abstract Organic molecules forming solvates often adopt different molecular conformations depending on the included solvent molecules, leading to variations in their photophysical properties. In this study, a conformationally flexible luminescent phloroglucinol derivative afforde...

Detailed reaction simulations of ammonium nitrate with gas–liquid mass transfer

Abstract Ammonium nitrate (AN) exhibits different thermal decomposition behavior under open and closed conditions. Although the thermal decomposition reactions and kinetics of AN have been extensively investigated, the origin of this difference remains unclear. In the present stu...

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...

Domestic value added in Bangladesh’s textile exports: a destination-specific decomposition, 2007–2023

Bangladesh’s textile and clothing sector is central to the country’s export-led industrialisation, yet the strong growth in export earnings has not been matched by clear evidence of domestic value creation. Although Bangladesh has become one of the world’s leading apparel exporte...

Lattice-Confined Rh Single Atoms in SrTiO3 Enable Leaching-Resistant and Durable Heterogeneous Hydroformylation

Abstract Heterogeneous Rh catalysts hold great promise for olefin hydroformylation by integrating the catalytic efficiency of Rh with facile separation and recycling. However, achieving high catalytic activity together with long-term stability remains a formidable challenge becau...

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...

Efficient Dispersion of TiO2 Nanoparticles in Silicone Oil Governed by Coupled Competitive and Cooperative Adsorption of Dispersants

Abstract Efficient dispersion of TiO2 nanoparticles (TiO2NPs) in non-aqueous silicone oil is essential for applications such as sunscreen formulations, in which performance is highly sensitive to dispersion quality. In this study, we propose a strategy for enhancing dispersion ef...

Odd-Parity Crystalline Electric Field and Multipoles in Icosahedral Quasicrystal and Approximant: Magnetic Toroidal and Electric Dipoles in Ce-Based Systems

Quasicrystals (QCs) lack periodic arrangement of atoms but possess unique structural order distinct from periodic crystals and random systems. The electronic property is far from complete understanding. Here we have formulated not only even-parity but also odd-parity crystalline...

Influence of melanopsin-expressing retinal ganglion cells on spatial brightness in ante and post meridian periods of time

To clarify the effects of melanopsin cells on spatial brightness, we conducted an experiment in which the brightness of the space was evaluated using a magnitude estimation method during AM (9.00 to 10:00) and PM (18.00 to 19.00) periods by modulating the stimulus value of melano...

A compilation of global bio-optical in situ data for ocean-colour satellite applications – version four

Abstract. A global in situ dataset for validation of satellite products from the ESA Ocean Colour Climate Change Initiative (OC-CCI) is presented. This version of the compilation, with data starting in 1996, extends to 2025, which is important for the validation of recent algorit...

Modeling user redemption behavior in complex digital incentive environment: an empirical study using large-scale transactional data

Abstract The digital economy implements complex incentive systems to retain users through point redemption. Understanding user behavior in such complex incentive structures presents a fundamental challenge, especially in estimating the value of these digital assets against tradit...

CCA2-Secure Unidirectional Proxy Re-encryption from Cryptographic Group Actions

Proxy re-encryption (PRE) allows a semi-trusted party (called a proxy) to transform ciphertexts under one user's public key into ciphertexts under another user's public key, without revealing any information about the underlying messages or the secret keys. On the other hand, pos...