Waseda University

Scaling limits of discrete-time Markov chains and their local times on electrical networks

Abstract We establish that if a sequence of electrical networks equipped with conductance measures converges in the local Gromov–Hausdorff-vague topology and satisfies certain non-explosion and metric-entropy conditions, then the sequence of associated discrete-time Markov chains...

Development of the Chemical Reaction Mechanism for Oxide Film Formation and Decomposition in Rh-Based Three-Way Catalysts

A full-hybrid system incorporating a spark-ignition engine is regarded as essential for future passenger car powertrains. To achieve effective exhaust-gas purification in such vehicles, it is necessary to elucidate the characteristics of three-way catalysts and to develop both ph...

The dynamics and ambiguities of ‘Chineseness’: Interethnic marriage practices in the Dutch Batavia before 1850

Abstract This article explores how interethnic marriage produces and governs ambiguous identities within legally pluralist port-city settings. Taking the construction of ‘Chineseness’ in the Dutch Batavia before 1850 as a case study, this article analyses how identity was contest...

Protest coordination across divisions: brokerage under democratic backsliding in Indonesia

Scholarship on civil society in Asia has often emphasized the structural constraints facing collective action under democratic backsliding. Yet less attention has been paid to the conditions under which fragmented civil society actors can overcome existing divisions and achieve c...

Single-cell genomics reveals opportunistic Enterobacterales carrying putative cationic antimicrobial peptide resistance genes in red crown rot-affected soybean rhizoplanes

The productivity of soybean, a globally important agricultural crop, is strongly influenced by soil- and root-associated biotic interactions, including those that shape disease outcomes. Soybean red crown rot, caused by the soil-borne fungus Calonectria ilicicola , leads to subst...

Explaining COVID-19 Tokyo metro station-level ridership disruption and recovery: pre-pandemic demand, built environment and centrality

COVID-19 caused severe and uneven metro ridership declines. This study examines station-level annual ridership change in Tokyo from 2020 to 2023 relative to 2019, integrating pre-pandemic demand, built environment, and network centrality. Its main contribution is to identify how...

Enhancing the Rotational Bending Fatigue Performance of 20CrMoH via Carburizing and Surface Ultrasonic Nanotechnology

ABSTRACT To alleviate the risk of rotational bending fatigue (RBF) failure in 20CrMoH alloy steel, a hybrid surface modification strategy combining carburizing and surface ultrasonic nanotechnology (SUNT) is developed in the present work. The synergistic effects of the combined t...

3D ultrasonography reveals a twisted proximal aponeurosis within the biceps femoris long head

Abstract Purpose This study aimed to characterize three-dimensional course and orientation of the proximal aponeurosis of the biceps femoris long head (BFlh) and examine whether local aponeurosis orientations vary with knee-joint angle and relate to fascicle architecture under pa...

Molecular Engineering of Redox‐Induced Conformational Entropy in Polyviologens for Organic Thermogalvanic Cells

ABSTRACT Thermogalvanic cells are attractive for harvesting low‐grade thermal energy because of their strong thermoelectrochemical response and simple architecture. Because the redox entropy change directly governs their Seebeck coefficient, engineering redox entropy offers an ef...

State-Dependent Effects of Geopolitical Risk on World Trade: Evidence from Network Redundancy

This paper asks whether the transmission of geopolitical risk to world trade depends on the redundancy of the global maritime logistics network. We construct a monthly, system-level proxy for logistics redundancy from UNCTAD liner shipping connectivity by computing the effective...

Timing of Noncontact Anterior Cruciate Ligament Injury According to Developmental Stage in Japanese Female Athletes

Objectives: This study aimed to identify the timing of high incidence of noncontact anterior cruciate ligament (ACL) injuries in female athletes by developmental stage. Design: Cross-sectional study. Setting: Orthopedic clinic specializing in sports injuries. Participants: The st...

Full-scale field evaluation of a net zero energy greenhouse concept integrating electrified heating, envelope improvements, and on-site photovoltaics

Abstract To address climate change and the transition to a low-carbon society, greenhouse horticulture must improve energy performance, as greenhouse facilities are energy-intensive systems requiring environmental control for crop cultivation. In particular, winter heating relies...

Association of Reallocation of Movement Behaviours with Ectopic Fat Accumulation: A Cross-Sectional Analysis of the UK Biobank Cohort

Purpose: Ectopic fat in non-adipose tissues is linked to higher chronic-disease risk. Using the UK Biobank, this study examined associations of device-measured physical activity (PA) and sedentary time with ectopic fat. Methods: Liver and pancreas proton density fat fraction (PDF...

Cellular Senescence and Immune Dysregulation in Acute-on-Chronic Liver Failure: A Case Report Integrating Single-Cell and Spatial Transcriptomic Profiling

Background: Acute-on-chronic liver failure (ACLF) is a clinical syndrome characterized by acute decompensation of cirrhosis, systemic inflammation, and high short-term mortality (1). The underlying mechanisms involve a complex interplay between cellular senescence, immune dysregu...

Cellular Senescence and Immune Dysregulation in Acute-on-Chronic Liver Failure: A Case Report Integrating Single-Cell and Spatial Transcriptomic Profiling

Background: Acute-on-chronic liver failure (ACLF) is a clinical syndrome characterized by acute decompensation of cirrhosis, systemic inflammation, and high short-term mortality (1). The underlying mechanisms involve a complex interplay between cellular senescence, immune dysregu...

Nature of the Localized V 3 d Electrons in Mo- and W-Doped BiVO4 Revealed by Soft X-ray Photoemission and Absorption Spectroscopy

Abstract We have investigated the effects of Mo and W doping on BiVO4 by means of X-ray photoemission spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The V 2p XPS spectra indicate that the substitution of W6+ and Mo6+ for V5+ induces the formation of V4+ species. In a...

From educational seminars to interpersonal diffusion: knowledge fidelity in word-of-mouth transmission of HPV vaccine information in Japan—a real-world implementation study

Abstract Background In vaccine-hesitant environments, evidence-based health information often spreads through interpersonal word-of-mouth communication within community networks. However, little empirical evidence exists regarding whether health knowledge remains accurate as it i...

Salt and Solvent Control of Elemental Sulfur (Cyclo-S8) and Lithium-Ion Diffusion in Liquid Li–S Battery Electrolytes Revealed by DFTB Molecular Dynamics

Abstract In recent years, lithium–sulfur (Li–S) batteries have become attractive owing to their high energy density and higher charge-storage capacity than Li-ion batteries. Despite this, practical applications of Li–S batteries remain limited by several challenges that still nee...

Momentum Space Resolution Dependence in Boltzmann Neutrino Radiation Hydrodynamics Simulations of Core-collapse Supernovae

Abstract Finite momentum space resolution is a primary source of uncertainty in solving the Boltzmann equation with the discrete-ordinates method. In this paper, the momentum space resolution dependence of Boltzmann neutrino transport is studied by performing a series of two-dime...

Metal‐Organic Framework‐Templated Deconstruction‐Reconstruction Enables One‐Dimensional to Two‐Dimensional Self‐Assembly of Transition Metal Phosphates for High‐Performance Ammonia Sensing

ABSTRACT Self‐assembled nanomaterials formed through the spontaneous organisation of nanoscale building blocks are attractive because of their high surface areas, strong interparticle connectivity, and ease of processing. However, programming the assembly of one‐dimensional (1D)...