Research works

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...

Nanoscale sensing of spatial correlations in nonequilibrium current noise

Abstract Nitrogen-vacancy centers are spatially resolved probes of current noise. So far, current noise sensing with NV centers has primarily been used as a way to probe equilibrium transport coefficients. We develop a framework for computing the spatiotemporal correlations of no...

Direct search for stochastic optimization in random subspaces with zeroth-, first-, and second-order convergence and expected complexity

Abstract Stochastic directional direct-search (SDDS) algorithms were recently introduced as an extension to stochastically noisy objectives of a broad class of algorithms including the well-known mesh adaptive direct-search (MADS) algorithms developed for the minimization of dete...

Reducing the diagnostic and treatment gap for priority mental, neurological and substance misuse disorders in primary care in rural Kenya: Results of a stepped wedge cluster randomized trial from the EPINA study

ABSTRACTBackground: In resource-limited settings, care for mental, neurological and substance misuse (MNS) disorders has been integrated into primary healthcare facilities (PHC) by training primary health workers (PHW) on the use of the mental health Gap Action Program Interventi...

The regular part of transformation semigroups that preserve double direction equivalence relation

Let $T(X)$ be the full transformation semigroup on a set $X$ under the composition of functions. For any equivalence relation $E$ on $X$, define a subsemigroup $T_{E^*}(X)$ of $T(X)$ by\[T_{E^*}(X)=\{\alpha\in T(X):\text{for all}\ x,y\in X, (x,y)\in E\Leftrightarrow (x\alpha,y\al...

Maximum Likelihood Thresholds of Generic Linear Concentration Models

Abstract. The maximum likelihood threshold of a statistical model is the minimum number of datapoints required to fit the model via maximum likelihood estimation. In this paper, we determine the maximum likelihood thresholds of generic linear concentration models. This turns out...

RKHS-Based Latent Position Random Graph Correlation

We study the problem of evaluating the correlation between two latent position random graphs, which is a challenging issue because the latent positions are generally unobservable in random graphs. We introduce a correlation coefficient that is defined in the reproducing kernel Hi...

Population parameters and life fertility table of root- knot nematode (Meloidogyne incognita) on cauliflower (Brassica oleracea var. botrytis)

The study was conducted under growth chamber at the Department of Entomology, College of Horticulture, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh during 2015-16 to developed the life fertility table of M. incognita on cauliflo...

Dependence of Hurricane Track Forecasts on the Spectral Representation of Cumulus Convection

This study investigates the sensitivity of hurricane track and intensity forecasts to various cumulus parameterization schemes with scale-awareness, including the Simplified Arakawa-Schubert (SAS), Relaxed Arakawa-Schubert (RAS), and Chikira-Sugiyama Arakawa-Wu (CSAW), within the...

As arenas de Construção do Conhecimento Agroecológico como espaços para emergência de um “novo profissionalismo” da ação extensionista.

The present text approaches the transition that the professionals of the Technical Assistance and Rural Extension in Brazil points out, through the analysis of the experience of Dom Feliciano-RS, the possibility of the emergence of a space of change from a diffusionist perspectiv...

Juventudes Rurais e Agroecologia: um diálogo imprescindível

Arguments from different areas of knowledge (Economics, Philosophy, Sociology, among others) point to a civilization crisis experienced by humanity in our day. In order to solve this crisis, it is necessary to mobilize different social and political actors, many of them invisibil...

Economia ecológica: uma possível referência para o desenho de sistemas humanos realmente sustentáveis

In the prevailing model of the typical economist, the economy is seen as an isolated system, without an environment, ignoring the ecosystem, the biophysical framework of the real economic system. It ignores the importance of happiness for social life as well. In fact, people are...