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Showing 20 of 252 academic articles

Bayesian ANN-Based Prediction and Multi-Objective Optimization of Tribological Behavior in Magnesium Alloy AZ91D at Elevated Temperature Using Pareto GA

Beniyel Muthuraj, Sivapragash Murugesan, Rajesh Rajamony, Michael Thomas Rex Francis • Materials Research (2025)

This study uses an artificial neural network (ANN) model to predict the wear rate and friction coefficient of the magnesium alloy AZ91D, based on experimental data from a pin-on-disc tribometer. The model includes three essential process pa...

DOAJ Open Access (DOAJ) DOI: 10.1590/1980-5373-mr-2025-0388

Research on Dispersion Compensation of FD-OCT System via Pix2Pix GAN Technique

Eddy Wijanto, Hsu-Chih Cheng, Bo-Hong Liao, Chun-Ming Huang et al. • IEEE Access (2024)

Dispersion in optical coherence tomography (OCT) poses a challenge that is exacerbated by the increased spectral bandwidth, which leads to image blur and feature loss. In this paper, we present a straightforward and cost-effective approach ...

DOAJ Open Access (DOAJ) DOI: 10.1109/ACCESS.2024.3368051

Evaluation of the performance of several cultivars of bean (Vicia faba L.) for yield and its components under three different cultivation distances

Mohammed Alatawi, Yousif Abd Alhamed Alhajoj, Raeed Mejbel Abdullah • Tikrit Journal for Agricultural Sciences (2024)

This study was conducted in the center of Kirkuk governorate in the farms of a farmer for the agricultural season 2020/2021. The study included two factors, the first is the distance between the meadows, where the following distances were u...

DOAJ Open Access (DOAJ) DOI: 10.25130/tjas.24.3.20

Interactions of cephalexin with bovine serum albumin: displacement reaction and molecular docking

Hamed Hamishehkar, Soheila Hosseini, Abdolhossein Naseri, Azam Safarnejad et al. • BioImpacts (2016)

Introduction: The drug-plasma protein interaction is a fundamental issue in guessing and checking the serious drug side effects related with other drugs. The purpose of this research was to study the interaction of cephalexin with bovine se...

DOAJ Open Access (DOAJ) DOI: 10.15171/bi.2016.19

Crystal structure and Hirshfeld surface analysis of 4-allyl-2-methoxy-6-nitrophenol

Yassine El Ghallab, Sanae Derfoufi, El Mostafa Ketatni, Mohamed Saadi et al. • Acta Crystallographica Section E: Crystallographic Communications (2020)

The asymmetric unit of the title compound, C10H11NO4, which was synthesized via nitration reaction of eugenol (4-allyl-2-methoxyphenol) with a mixture of nitric acid and sulfuric acid, consists of three independent molecules of similar geom...

DOAJ Open Access (DOAJ) DOI: 10.1107/S2056989020002601

Competitiveness of Poland in the export of knowledge-intensive business services (KIBS) during EU membership

Joanna Wyszkowska-Kuna • Przegląd Europejski (2025)

The aim of this article is to assess the competitiveness and specialisation of Polish knowledge-intensive business services (KIBS) export during the years 2004–2022. The product mapping method is used, which is based on the values of two in...

DOAJ Open Access (DOAJ) DOI: https://doi.org/10.31338/1641-2478pe.2.25.6

Early virtual reality adopters in Spain: sociodemographic profile and interest in the use of virtual reality as a learning tool

Roberto Sánchez-Cabrero, Óscar Costa-Román, Francisco Javier Pericacho-Gómez, Miguel Ángel Novillo-López et al. • Heliyon (2019)

This study describes the social and demographic profile of the first generation of users of marketed virtual reality (VR) viewers in Spain and, subsequently, it assesses the interest in its use as a learning tool. For that purpose, an onlin...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.heliyon.2019.e01338

Intergalactic Wandering Stars in the Local Universe: Theoretical Predictions for Their Distance and Luminosity Distribution

Jia-Hui Wang, Maosheng Xiang, Ji-Feng Liu • The Astrophysical Journal (2025)

Intergalactic wandering stars (IWSs) within 10 Mpc remain a poorly explored area of astronomy. Such stars, if they exist, are supposed to be wandering objects as they are not bound by the gravitational potential of any galaxy. We set out to...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/adf8c8

Anti-de Sitter → de Sitter transition driven by Casimir forces and mitigating tensions in cosmological parameters

Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst • Physics Letters B (2024)

Over the last few years, low- and high-redshift observations set off tensions in the measurement of the present-day expansion rate H0 and in the determination of the amplitude of the matter clustering in the late Universe (parameterized by ...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.physletb.2024.138775

Astronomy and Astrophysics

National Research Council • National Academies Press eBooks (1988)

The distribution of interstellar extinction has been mapped over the whole sky, using all available spectral and photometric data.The colour excess distribution is modelled as a function of galactic latitude, longitude and distance within a...

OPENALEX Open Access DOI: https://doi.org/10.17226/750

Where Do Hot Jupiters Come from? Revisiting Tidal Disruption and Ejection in High-eccentricity Migration

Qianli Fan, Shang-Fei Liu • The Astrophysical Journal Letters (2026)

The origin of hot Jupiters remains a key open question. In the high-eccentricity migration scenario, traditional coreless models predict a strict tidal exclusion zone within ∼2.7 tidal radii r _t , in which giant planets are either fully di...

DOAJ Open Access (DOAJ) DOI: 10.3847/2041-8213/ae6659

ZOTMPo–INAR(1) Process: Entropy and Modeling of Epidemiological Count Time Series Data

Manik Awale, Shrirang Pund, Hassan S. Bakouch, Aishwarya Ghodake et al. • Entropy (2026)

In this article, we propose a first-order integer-valued autoregressive (INAR(1)) model based on binomial thinning, in which the innovation sequence follows a zero–one–two-modified Poisson (ZOTMPo) distribution. The proposed model accommoda...

DOAJ Open Access (DOAJ) DOI: 10.3390/e28080889

Assessing PM2.5 pollution in the Northeastern United States from the 2023 Canadian wildfire smoke: an episodic study integrating air quality and health impact modeling with emissions and meteorological uncertainty analysis

Hao He, Timothy P Canty, Russell R Dickerson, Joel Dreessen et al. • Environmental Research Letters (2025)

Between June 6 and 8, 2023, wildfires in Quebec, Canada generated massive smoke plumes that traveled long distances and deteriorated air quality across the Northeastern United States (US). Surface daily PM _2.5 observations exceeded 100 µ g...

DOAJ Open Access (DOAJ) DOI: 10.1088/1748-9326/ae10c9

Real-time obstacle avoidance of mobile robots using state-dependent Riccati equation approach

Seyyed Mohammad Hosseini Rostami, Arun Kumar Sangaiah, Jin Wang, Hye-jin Kim • EURASIP Journal on Image and Video Processing (2018)

Abstract In this paper, state-dependent Riccati equation (SDRE) method-based optimal control technique is applied to a robot. In recent years, issues associated with the robotics have become one of the developing fields of research. Accordi...

DOAJ Open Access (DOAJ) DOI: 10.1186/s13640-018-0319-1

Quantum Paradox: Redefining Secure Communication With Quantum and Post-Quantum Cryptographic Breakthroughs

Anuththara Hettiarachchi, Amila Nuwan Senarathne, Kapila Dissanayaka • IEEE Access (2026)

The rapid advancement of quantum computing, exemplified by Shor’s and Grover’s algorithms, poses an existential threat to the Rivest-Shamir-Adleman algorithm, elliptic curve cryptography, and symmetric encryption. This paper p...

DOAJ Open Access (DOAJ) DOI: 10.1109/ACCESS.2026.3716526