Reset
Showing 20 of 2,365 academic articles

All-dielectric metaoptics for the compact generation of double-ring perfect vector beams

Vogliardi Andrea, Ruffato Gianluca, Bonaldo Daniele, Dal Zilio Simone et al. • Nanophotonics (2023)

Perfect vortices, whose ring profile is independent of the topological charge, play a key role in telecommunications and particle micro-manipulation. In this work, we report the compact generation of a new kind of double-ring perfect vortic...

DOAJ Open Access (DOAJ) DOI: 10.1515/nanoph-2023-0555

ALL-IN-ONE LASER SCANNING METHODS FOR SURVEYING, REPRESENTING AND SHARING INFORMATION ON ARCHAEOLOGY. VIA FLAMINIA AND THE FURLO TUNNEL COMPLEX

P. Clini, R. Nespeca, A. Bernetti • The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences (2013)

The aim of this paper is to describe the results of the laser scanner survey of an archaeological complex, aimed at knowledge, documentation and diagnostic operations to make premises secure. Archaeology has always been the most complex su...

DOAJ Open Access (DOAJ) DOI: 10.5194/isprsarchives-XL-5-W2-201-2013

Metal Adornments of Clothing and Headwear in the Bronze Age of Western Siberia (issues of research and reconstruction) ..

Umerenkova Olga V. • Поволжская археология (2017)

The article considers issues related to the principals of scientific approach, methods and procedure of costume reconstruction on the basis of archaeological materials dating back to the Bronze Age discovered in the territory of Western Sib...

DOAJ Open Access (DOAJ) DOI: 10.24852/pa2017.3.21.280.288

An Adaptive JPEG Double Compression Steganographic Scheme Based on Irregular DCT Coefficients Distribution

Ju Jia, Zhaoxia Xiang, Lina Wang, Yan Xu • IEEE Access (2019)

Steganography is to embed secret information into digital media and minimize the distortion caused by data embedding. The JPEG is a widely used image compression format, and many JPEG images transmitted on the network are double compressed....

DOAJ Open Access (DOAJ) DOI: 10.1109/ACCESS.2019.2926226

Generating Daily High-Resolution Regional XCO<sub>2</sub> by Deep Neural Network and Multi-Source Data

Wenjie Tian, Lili Zhang, Tao Yu, Dong Yao et al. • Atmosphere (2024)

CO2 is one of the primary greenhouse gases impacting global climate change, making it crucial to understand the spatiotemporal variations of CO2. Currently, commonly used satellites serve as the primary means of CO2 observation, but they of...

DOAJ Open Access (DOAJ) DOI: 10.3390/atmos15080985

A Novel Inertial-Aided Star Pattern Matching Method for Distributed Multiple FoVs

Rong Wang, Yuxuan Cao, Jianye Liu, Zhi Xiong • International Journal of Aerospace Engineering (2020)

An aerospace vehicle in high-speed flight involves distributed multiple fields of view (FoVs) of a star sensor, and the maneuvering of the vehicle requires inertial-aided star pattern matching. Accordingly, an inertial-aided star pattern ma...

DOAJ Open Access (DOAJ) DOI: 10.1155/2020/2676210

Urban Sprawl and Changes in Land-Use Efficiency in the Beijing–Tianjin–Hebei Region, China from 2000 to 2020: A Spatiotemporal Analysis Using Earth Observation Data

Meiling Zhou, Linlin Lu, Huadong Guo, Qihao Weng et al. • Remote Sensing (2021)

Sustainable development in urban areas is at the core of the implementation of the UN 2030 Agenda and the Sustainable Development Goals (SDG). Analysis of SDG indicator 11.3.1—Land-use efficiency based on functional urban boundaries—provide...

DOAJ Open Access (DOAJ) DOI: 10.3390/rs13152850

Evaluation of joint and muscle function of paediatric upper and lower extremities

Mohamed Afifi, Mohamed Afifi, Muhammad Uba Abdulazeez, Muhammad Uba Abdulazeez et al. • Frontiers in Bioengineering and Biotechnology (2025)

Road traffic crashes are the leading cause of injuries, disabilities, and fatalities for children and young adults. Extremity joint injuries have been identified as one of the contributing factors to chronic disabilities among children in r...

DOAJ Open Access (DOAJ) DOI: 10.3389/fbioe.2025.1667865

The Temporal-Based Forest Disturbance Monitoring Analysis: A Case Study of Nature Reserves of Hainan Island of China From 1987 to 2020

Han Xiao, Han Xiao, Xiaoqian Zhang, Xiaoqian Zhang et al. • Frontiers in Environmental Science (2022)

Forest disturbance monitoring can provide scientific data for the decision making and management of nature reserves. LandTrendr algorithm has been applied to identify forest disturbances on a long-time scale through appropriate segmentation...

DOAJ Open Access (DOAJ) DOI: 10.3389/fenvs.2022.891752

Evaluating key predictors of breast cancer through survival: a comparison of AFT frailty models with LASSO, ridge, and elastic net regularization

Senyefia Bosson-Amedenu, Emmanuel Ayitey, Francis Ayiah-Mensah, Luyton Asare • BMC Cancer (2025)

Abstract Background Frailty models are extensively utilized in survival analysis to address unobserved heterogeneity among individuals. However, selecting the most robust model for survival prediction, especially in the context of high-dime...

DOAJ Open Access (DOAJ) DOI: 10.1186/s12885-025-14040-z

Ethical and social implications of approaching death prediction in humans - when the biology of ageing meets existential issues

Marie Gaille, Marco Araneda, Clément Dubost, Clémence Guillermain et al. • BMC Medical Ethics (2020)

Abstract Background The discovery of biomarkers of ageing has led to the development of predictors of impending natural death and has paved the way for personalised estimation of the risk of death in the general population. This study inten...

DOAJ Open Access (DOAJ) DOI: 10.1186/s12910-020-00502-5

Determination of Novel Estimations for the Slater Difference and Applications

Muhammad Adil Khan, Hidayat Ullah, Tareq Saeed, Zaid M. M. M. Sayed et al. • Complexity (2024)

The field of mathematical inequalities has exerted a profound influence across a multitude of scientific disciplines, making it a captivating and expansive domain ripe for research investigation. This article offers estimations for the Slat...

DOAJ Open Access (DOAJ) DOI: 10.1155/2024/8481103

Novel fractional integral inequalities for GA-Cr-convex functions and connections with information systems

Asfand Fahad, Zammad Ali, Shigeru Furuichi, Yuanheng Wang • Alexandria Engineering Journal (2025)

Due to applicability of mathematical inequalities in control systems, actuarial science, information theory and its utilization in other sciences, several researchers are inclined to prove their refinements and generalizations. In the study...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.aej.2024.11.034

Empirical study on optimal reinsurance for crop insurance in China from an insurer's perspective

Xian-hua ZHOU, Yun-bo WANG, Hua-dong ZHANG, Ke WANG • Journal of Integrative Agriculture (2015)

This study investigates the optimal reinsurance for crop insurance in China in an insurer's perspective using the data from Inner Mongolia, Jilin, and Liaoning, China. On the basis of the loss ratio distributions modeled by AnHua Crop Risk ...

DOAJ Open Access (DOAJ) DOI: 10.1016/S2095-3119(14)60998-9

Robustness analysis of a Continuous-Time Markov Jump Process model for herd behaviour under stochastic shocks

Samuel Kipsang Kaptum, Jane Aduda Akinyi, Philip Ngare, Amos Kipkorir Langat • Scientific African (2025)

Herd behaviour in socio-economic systems is characterised by asynchronous, stochastic decision-making that traditional models capture imperfectly. Discrete-time DTMCs impose fixed-tick synchrony and require binning, which distorts event tim...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.sciaf.2025.e03042

An artificial neural network-based model for predicting paratransit travel time

George Ukam, Charles Adams, Atinuke Adebanji, Williams Ackaah • Cogent Engineering (2024)

The nature of paratransit services makes for increased uncertainty in trip time, leading to reported unreliability and dissatisfaction by the users. While providing travel information has proved helpful in formal bus services and has been r...

DOAJ Open Access (DOAJ) DOI: 10.1080/23311916.2024.2386383

How to measure consumer's inconsistency in sensory testing?

László Sipos, Kolos Csaba Ágoston, Péter Biró, Sándor Bozóki et al. • Current Research in Food Science (2025)

Consumer sensory testing is the basis for determining directions of product development in the food industry. However, while compliance assessment by trained and expert assessors is well developed, few information is available on testing co...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.crfs.2025.100982

Entropy Measures for Plithogenic Sets and Applications in Multi-Attribute Decision Making

Shio Gai Quek, Ganeshsree Selvachandran, Florentin Smarandache, J. Vimala et al. • Mathematics (2020)

Plithogenic set is an extension of the crisp set, fuzzy set, intuitionistic fuzzy set, and neutrosophic sets, whose elements are characterized by one or more attributes, and each attribute can assume many values. Each attribute has a corres...

DOAJ Open Access (DOAJ) DOI: 10.3390/math8060965

Active querying approach to epidemic source detection on contact networks

Martin Sterchi, Lorenz Hilfiker, Rolf Grütter, Abraham Bernstein • Scientific Reports (2023)

Abstract The problem of identifying the source of an epidemic (also called patient zero) given a network of contacts and a set of infected individuals has attracted interest from a broad range of research communities. The successful and tim...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41598-023-38282-8

EARNINGS QUALITY AND ASYMMETRIC COST BEHAVIOR: A STUDY OF INDONESIA CAPITAL MARKET

Riki Martusa, Meythi Meythi, Laurensia Vina Dharmawan • International Journal of Innovative Technologies in Economy (2022)

This study investigates whether earnings quality affects to asymmetric cost behavior, i.e., sticky cost of listed firms of Jakarta Stock Exchange (JKSE). This study analyzes 1032 year-firms observations during 2012-2019 periods. This study ...

DOAJ Open Access (DOAJ) DOI: 10.31435/rsglobal_ijite/30062022/7843