Research works

Structural and electrochemical investigation of Fe-doped sheet-like ZnCo₂O₄ as battery-type electrode for high-performance hybrid supercapacitors

Multi-transition metal spinel oxides with nanostructures have become interesting options for improving the electrochemical performance of next-generation supercapacitors. By synthesizing pure ZCO, 5% Fe-doped ZCO, and 10% Fe-doped ZCO, the structural and electrochemical effects o...

Stochastic modeling of labor supply and discouraged worker behavior

Discouraged workers are those who have given up searching for work because of the (perceived) low chances of obtaining it. In this paper we develop a stochastic structural econometric framework for analyzing discouraged worker behavior based on the theory of job search and the no...

Self-reflection resilience-recovery activity promotion training for emergency medical service clinicians: A randomized controlled pilot trial of a novel digital intervention.

Objectives: The emergency medical service profession needs resilience interventions that address clinicians’ mental health risk. This study performed a randomized controlled pilot trial examining 1) feasibility, acceptability, and adoptability of a novel digital intervention: Sel...

Optimal Policy Analysis for Monotonic (PO)MDPs and an Application to Fishery Management

<title>Abstract</title> We study the monotonicity properties of optimal policies for a class of fully/partially observable Markov Decision Processes (MDPs) motivated by renewable natural resource management. We first introduce a new class of deterministic monotonic MDPs with cont...

Chinese students’ L2 classroom engagement in college: Perceived teacher support, value beliefs and self-monitoring

<title>Abstract</title> Based on an integrated framework of the Self-Determination Theory and the Expectancy-Value Theory, this study investigated the link between students’ perceived teacher support and their L2 classroom engagement via two mediators: students’ value beliefs of...

Derivation of human post-mitotic cardiomyocytes from tetraploid iPSCs

Human induced pluripotent stem cell (iPSC)-derived cardiomyocytes (iPS-CMs) have great potential in regenerative medicine. However, iPS-CMs are immature and resemble fetal cardiomyocytes, restricting their application. Fetal cardiomyocytes in the human heart are diploid and proli...

Development of a PEGylated parylene nanopocket membrane for the capture and release of lipid vesicles

Membranes are commonly used for the separation and purification of a variety of biological species. In this study, we developed a nanopocket membrane that can capture nanoparticles and extracellular vesicles in tangential flow filtration by pulling the species of interest into a...

Algebraic characterization of equivalence between oracle-based iterative algorithms

Abstract When are two algorithms the same? How can we be sure a recently proposed algorithm is novel, and not a minor variation on an existing method? In this paper, we present a framework for reasoning about equivalence between a broad class of iterative algorithms, with a focus...

Photon‐Recycling Dielectric Laser Accelerator

ABSTRACT We propose a photon‐recycling dielectric laser accelerator (DLA) system based on silicon‐on‐insulator platform. Our DLA system employs transverse‐magnetic optical mode as the primary energy source, modulated and injected into the electron‐light interaction region for lon...

The Fox Versus the Hedgehog: Firm Survival During Unprecedented Crises

This paper examines how sales channel diversification influences firm resilience during the COVID crisis. Drawing on a series of logit regressions analyzing 11,662 firms across 31 developing countries, we find that firms embodying an open mind-set and a diverse array of sales cha...

Wehrl Inequalities for Matrix Coefficients of Holomorphic Discrete Series

Abstract Let G be a Hermitian Lie group. We prove Wehrl-type $$L^2(G)-L^{p}(G)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>L</mml:mi> <mml:mn>2</mml:mn> </mml:msup> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>G</mml:mi> <mml:mo>)</mml:mo> <...

Boundary regularity for quasiminima of double-phase problems on metric spaces

We give a sufficient condition for Hölder continuity at a boundary point for quasiminima of double-phase functionals of $p,q$-Laplace type, in the setting of metric measure spaces equipped with a doubling measure and supporting a Poincaré inequality. We use a variational approach...

Mean dimension theory for infinite dimensional Bedford–McMullen sponges

Tsukamoto (2022) introduced the notion of Bedford–McMullen carpet system, a subsystem of $ ([0, 1]^{ \mathbb{N}}\times[0, 1]^{ \mathbb{N}}, {\rm{shift}}) $ whose metric mean dimension and mean Hausdorff dimension does not coincide in general. The aim of this paper is to develop t...

Persistence of entangled states and high-fidelity quantum gate operations in Si/SiGe spin qubits at high temperature

We characterize single- and two-qubit operations in a SiGe quantum dot array, from the perspective of its quantum information processing capabilities. The analysis includes rigorous randomized benchmarking of single- and two-qubit gates, state preparation and measurement characte...

Gas-phase synthesis of plasmonic nanoparticles with robust high bandgap shell materials: A study of Cu@CaF2 with AI supported transmission electron microscopy analysis

Cu@CaF2 plasmonic nanoparticle (NP) films are physically synthesized, and their morphology, and electronic and optical properties are thoroughly investigated. Cu NPs are generated using a gas aggregation source assisted by magnetron sputtering, while CaF2 coatings are deposited b...

Augmenting software engineering with AI. The ai4se taxonomy and its use

Abstract Although model-driven software engineering (MDSE) has proven effective in managing complex systems, its industrial adoption remains limited by the substantial maintenance overhead required for models and the specialised skills demanded of developers. Meanwhile, advances...

Stroke survivors’ health priorities and targeted interventions in home-based post-discharge rehabilitation

<title>Abstract</title> Background This study aimed to describe health problems of the stroke survivors and the corresponding nursing interventions implemented during 12-week home-based post-discharge rehabilitation. Methods This was a descriptive secondary analysis within the co...

SC-DAC: a robust partially and fully access control mechanism for secure cloud data in outsourced environments

Cloud computing has revolutionized data storage and processing, yet it poses significant security challenges, necessitating robust access control mechanisms. This research introduces a novel approach to secure cloud data access control through the Robust Mechanism for Secure Clou...

Leave-one-out analysis for nonconvex robust matrix completion with general thresholding functions

We study the problem of robust matrix completion (RMC), where the partially observed entries of an underlying low-rank matrix is corrupted by sparse noise. Existing analysis of the non-convex methods for this problem either requires the explicit but empirically redundant regulari...

Bifurcation and local rigidity of homogeneous solutions to the Yamabe problem on Aloff-Wallach spaces

We construct 1-parameter families of well-known solutions to the Yamabe problem defined on Aloff-Wallach Spaces to determine bifurcation instants for these homogeneous spaces by examining changes in the Morse index of these metrics as the parameter varies over the positive real n...