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Antenna array based on open ring radiators

Ye.O. Antonenko, Y.V. Antonenko, D.O. Shtoda, V.O. Katrich et al. • Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка (2022)

Relevance. The creation of antenna arrays for communication systems is an urgent task in the unmanned aviation industries, in particular, for video signal transmission systems. Also, the relevance of the work is due to the need to use direc...

DOAJ Open Access (DOAJ) DOI: 10.26565/2311-0872-2022-37-08

A Systematic Review of Literature and Comprehensive Bibliometric Analysis of Capital Structure Issue

Dominika GAJDOSIKOVA, Katarina VALASKOVA • Management Dynamics in the Knowledge Economy (2022)

Economists have been dealing with the issue of using sources of financing in business activities for more than half a century. The search for a suitable combination of equity and debt financing has led to a number of studies and later theor...

DOAJ Open Access (DOAJ)

An integrated vehicle routing model to optimize agricultural products distribution in retail chains

W. Madushan Fernando, Amila Thibbotuwawa, H. Niles Perera, Peter Nielsen et al. • Cleaner Logistics and Supply Chain (2024)

The Vehicle Routing Problem (VRP) represents a thoroughly investigated domain within operations research, yielding substantial cost savings in global transportation. The fundamental objective of the VRP is to determine the optimal route pla...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.clscn.2023.100137

Digital Marketing Strategies in the Public Sector of Tourism: Enhancing Promotion and Engagement in the Tourism Industry

Ahmad Wahidiyat Haedar • Jurnal Ilmiah Ilmu Administrasi Publik (2023)

This research aims to investigate the effectiveness of digital marketing strategies in the public sector of tourism and their role in enhancing promotion and engagement within the tourism industry. The background of the study highlights the...

DOAJ Open Access (DOAJ) DOI: 10.26858/jiap.v13i1.47689

A novel chaotic flower pollination algorithm for function optimization and constrained optimal power flow considering renewable energy sources

Fatima Daqaq, Fatima Daqaq, Mohammed Ouassaid, Salah Kamel et al. • Frontiers in Energy Research (2022)

This study presents an improved chaotic flower pollination algorithm (CFPA) with a view to handle the optimal power flow (OPF) problem integrating a hybrid wind and solar power and generate the optimal settings of generator power, bus volta...

DOAJ Open Access (DOAJ) DOI: 10.3389/fenrg.2022.941705

Effect of chemical treatment on the mechanical and thermal performance of flax fiber reinforced aluminium 6082 laminate: a machine learning-enhanced investigation

M. Vinod, B. S. Nithyananda, Shrishail B. Sollapur, Satish Gajbhiv et al. • Scientific Reports (2026)

Abstract This work examined the role of alkaline and epoxy-based surface chemical treatments on the mechanical and thermal properties of flax fiber reinforced Aluminum Alloy 6082 hybrid Fiber Metal Laminates (FMLs), integrated with machine ...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41598-026-58852-w

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

THE OPTIMIZATION OF PLUSH YARNS BULKING PROCESS

VINEREANU Adam, POTOP Georgeta-Lidia, LEON Ana-Lacramioara, VINEREANU Elena • Annals of the University of Oradea: Fascicle of Textiles, Leatherwork (2014)

This paper presents the experiments that were conducted on the installation of continuous bulking and thermofixing “SUPERBA” type TVP-2S for optimization of the plush yarns bulking process. There were considered plush yarns Nm 6.5/2, made o...

DOAJ Open Access (DOAJ)

Analysis and optimal design of low frequency road noise based on new energy MPV vehicle

BIN Shibo; XIE Yunhe; ZHENG Weiguang; WEI Shangjun; GAO Ting; LIU Xuewen • Nantong Daxue xuebao. Ziran kexue ban (2025)

Low-frequency road noise is a primary contributor to in-cabin noise and directly affects overall vehicle comfort. With the rapid development of electric vehicles, this issue has attracted increasing attention from the automotive industry. T...

DOAJ Open Access (DOAJ) DOI: 10.12194/j.ntu.20240724001

Optimization Design of Structures Subjected to Transient Loads Using First and Second Derivatives of Dynamic Displacement and Stress

Qimao Liu, Jing Zhang, Liubin Yan • Shock and Vibration (2012)

This paper developed an effective optimization method, i.e., gradient-Hessian matrix-based method or second order method, of frame structures subjected to the transient loads. An algorithm of first and second derivatives of dynamic displace...

DOAJ Open Access (DOAJ) DOI: 10.3233/SAV-2012-0685

Research on the Cooling and Humidifying Effects of <em>Cinnamomum camphora</em> Roadside Plantings in Wuhan and Optimization of Thermal Comfort

HU Chenwei, HU Jichun, CHEN Dexuan, HUANG Yi • 园林 (2026)

Street trees in high-density urban areas play a crucial role in mitigating the urban heat island effect and enhancing spatial thermal comfort. However, the cooling and humidifying effects of street trees are influenced by complex factors su...

DOAJ Open Access (DOAJ) DOI: 10.12193/j.laing.20260123001

Energy management and power quality improvement of microgrid system through modified water wave optimization

Subhashree Choudhury, George Tom Varghese, Satyajit Mohanty, Venkata Ratnam Kolluru et al. • Energy Reports (2023)

A comparative study of energy management strategies and PQ improvement schemes for a Fuel Cell, Battery, and SuperCapacitor integrated Microgrid system has been projected utilizing the MATLAB/Simulink architecture in this research article. ...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.egyr.2023.05.068

Research on Parameter Influence of Offshore Wind Turbines Based on Measured Data Analysis

Renfei Kuang, Jinhai Zhao, Tuo Zhang, Chengyang Li • Journal of Marine Science and Engineering (2025)

Offshore wind turbines are prone to structural damage over time due to environmental factors, which increases operational costs and the risk of accidents. Early detection of structural damage through monitoring systems can help reduce maint...

DOAJ Open Access (DOAJ) DOI: 10.3390/jmse13040629

Decoding cross-cultural textbook networks: structural patterns, formation mechanisms, and predictive insights using a topology–cognition framework

Min Xia, Xiu-Mei Feng, Wei-Bing Deng, Ben-Wei Zhang • EPJ Data Science (2026)

Abstract Conventional textbook analysis often faces fragmented frameworks, obscuring the relationship between content structure and cognitive development. To address this gap, we propose an integrative computational modeling framework that ...

DOAJ Open Access (DOAJ) DOI: 10.1140/epjds/s13688-026-00664-z

Evaluation of Indicators for the Realization of the Development of Public-Oriented Urban Transportation (Study Case: District 11 of Tehran)

Sayyed Jalal Aldin Hosseini, Azita Rajabi, Afshin Safahan, Aliasghar Rezvani • برنامه‌ریزی توسعه شهری و منطقه‌ای (2024)

Transit-Oriented Development (TOD) represents a significant facet of sustainable urban planning aimed at addressing urban traffic challenges through the strategic expansion of public transportation systems. District 11 within the municipali...

DOAJ Open Access (DOAJ) DOI: 10.22054/urdp.2023.55092.1248

Optimization of GDMT for patients with heart failure and reduced ejection fraction: can physiological and biological barriers explain the gaps in adherence to heart failure guidelines?

Marilyne Jarjour, Anique Ducharme • Drugs in Context (2023)

Heart failure is a growing epidemic with high mortality rates and recurrent hospital admissions that creates a burden on affected individuals, their caregivers and the whole healthcare system. Throughout the years, many randomized trials ha...

DOAJ Open Access (DOAJ) DOI: 10.7573/dic.2023-5-6