Universidade do Estado do Rio de Janeiro

Gradient‐ and Newton‐Based Unit Vector Extremum Seeking Control

ABSTRACT This paper proposes new methods for stable and efficient convergence in multivariable extremum seeking control (ESC) using sliding mode techniques. Inspired by classical sliding modes and finite‐time control, the approach integrates these ideas into gradient‐ and Newton‐...

Trends in access to basic sanitation services across Brazilian municipalities under a new legal framework

Federal Law No. 14,026/2020 updated Brazil's sanitation legal framework, reinforcing universalization targets for water supply and sewage services. It mandates that by the end of 2033, sanitation contracts must ensure 99% of the population has access to potable water and 90% to s...

Validation of a Low-Cost Parallel Plate Rotational Viscometer: Effect of Plate Spacing on Viscosity Measurement of Automotive Oils

Abstract Viscosity is the most relevant property of automotive lubricants, directly influencing friction, wear, and energy efficiency of internal combustion engines. This work presents the design, construction, and validation of a low-cost parallel plate rotational viscometer, wi...

From Nova food classification to policy implementation: Latin American lessons for the sustainable diets agenda

Latin America has become a major source of conceptual and evidence-informed policy innovation in response to the expansion of ultra-processed foods (UPFs).1–3 Although much of this processing-based policy architecture emerged through public health and food and nutrition security...

Accurate prediction of UV absorption in zirconia–alumina mixed oxide (ZrAl4O8) via GW–BSE calculations

Abstract Context Zirconia is a technologically relevant material widely employed in catalysis owing to its thermal stability, acid–base surface properties, and optical response, enabling applications both as a solid acid catalyst and as a photocatalytic material. Even so, the rel...

Power Profile of Olympic Cross-Country Mountain Biking: Durability Matters

Abstract Inoue, A, Mateo-March, M, Protzen, G, do Carmo, EC, Lattari, E, Costa, VP, and Bezerra da Silva, E. Power profile of Olympic cross-country mountain biking: Durability matters. J Strength Cond Res XX(X): 000–000, 2026—Power output decline may represent an important indica...

Humanizing pediatric anesthesia care: development and validation of an educational video for caregivers

OBJECTIVE: To develop an educational video on pediatric anesthesia, obtain evidence of content validity from experts, and assess its clarity, adequacy, and acceptability among caregivers. METHODS: This methodological study was conducted at a tertiary pediatric university hospital...

Effect of the area on the performance of low impact development practices placed at catchment-scale under long-term simulation

Abstract Previous studies highlighted the effectiveness of Low Impact Development (LID) practices in reducing urban surface runoff, but their long-term performance at different implementation areas remains unclear. This study addresses this gap by simulating surface runoff reduct...

Foraminifera and thecamoebians as indicators of hydrodynamics in a tropical delta – Paraíba do Sul River Delta, Brazil

Abstract Deltas are dynamic transitional environments where complex morphology and hydrodynamics have a great influence on benthic communities. This study investigates the distribution of foraminifera and thecamoebians in the Paraíba do Sul River Delta (Brazil), with emphasis on...

A replicable six-method framework for quantifying legislative efficacy in surface water quality governance: evidence from four decades of monitoring in ten São Paulo River Basins, Brazil (1978–2026)

Abstract Surface water quality governance in developing economies frequently fails to reverse long-term deterioration despite successive legislative interventions, yet rigorous quantitative evaluation of policy effectiveness at the basin scale remains rare. This study applies a t...

A new perspective on centroid algorithms for unsupervised discrete clustering in Riemannian manifolds: an approach via optimization

Abstract Clustering is an unsupervised learning technique used to discover hidden structures in data. By identifying patterns and similarities among objects, this methodology enables the organization of datasets into homogeneous groups. This work presents a new perspective on a s...

Advancing project studies under the design science paradigm

Purpose This paper examines how the design science paradigm has been incorporated and progressively consolidated within Project Studies, and how this trajectory can inform future research. It analyses publication patterns, intellectual configuration, artefact types, problem class...

Splitting aspects of holomorphic distributions with locally free tangent sheaf

In this work, we mainly deal with a two-dimensional singular holomorphic distribution \mathcal{D} defined on M , where M represents a complex manifold of dimension n \geq 3 or a germ of it, whose tangent sheaf T_{\mathcal{D}}D is locally free. As is well known, when M=\mathbb{P}^...

Extremum seeking control for actuation dynamics governed by a wave PDE with distributed effects

This paper deals with the gradient-based extremum seeking control (ESC) with actuation dynamics governed by distributed wave partial differential equations (PDEs). To achieve the control objective of real-time optimization for this class of infinite-dimensional systems, we first...

Full event interpretation with machine-learning-based particle-flow reconstruction in the CMS detector

Abstract The particle-flow (PF) algorithm constructs a global description of each particle collision by producing a comprehensive list of final-state particles, and is central to event reconstruction in the CMS experiment at the CERN LHC. The existing PF implementation relies on...

Dense and Cold Magnetized Quark Matter: A Review of Magnetic-Field-Independent Regularization and the Medium Separation Scheme

We present a comprehensive review of regularization schemes for magnetized dense quark matter within effective models of quantum chromodynamics, focusing on the Magnetic-Field-Independent Regularization (MFIR) and the Medium Separation Scheme (MSS) at finite chemical potential an...

Factors associated with discordance between the patient-reported Rheumatoid Arthritis Disease Activity Index (RADAI) and the Simplified Disease Activity Index (SDAI) concerning the achievement of treat-to-target goals – data from the REAL study

Abstract Background Treat-to-target (T2T) strategies in rheumatoid arthritis (RA) rely on regular assessment of disease activity using validated composite indices, with remission or low disease activity as therapeutic goals. The Simplified Disease Activity Index (SDAI) is widely...

Bayesian Parameter Estimation and Model Class Selection for Identification of Spatially Dependent Convective Heat Transfer Coefficients in a Microtube Heat Sink

Abstract The analysis of heat transfer at the microscale has been widely employed in recent decades due to technological advances in the industry of miniaturized fluid transport systems. This work presents a model class selection approach for the identification of spatially depen...

Effect of corn syrup consumption on bone and inflammatory parameters in rats with spontaneous periodontitis

Abstract Background Although added sugar consumption is associated with altered periodontal parameters in humans and alveolar bone loss in rodents, the immunoinflammatory pathways involved and the links between local periodontal and systemic effects are not yet defined. The purpo...

Association between quality-of-life-related indicators and obesity severity categories (Classes I–III): a cross-sectional analysis of the 2019 Brazilian National Health Survey

To investigate associations between quality-of-life-related indicators (QoLRIs) and obesity severity among Brazilian adults and older adults. This cross-sectional study analyzed 2019 Brazilian National Health Survey data from 17,908 individuals with obesity (BMI ≥ 30 kg/m²), incl...