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Showing 20 of 27 academic articles

Total factor productivity growth and spatial–temporal evolution of China’s health system: a three-stage DEA-Malmquist approach

Yutong Yan, Pengcheng Wang, Yurui Guo • Frontiers in Public Health (2026)

In recent years, the deepening of healthcare reform in China has raised high demands for the accurate measurement of hospital total factor productivity (TFP), where existing systems often overstate performance by neglecting social welfare. ...

DOAJ Open Access (DOAJ) DOI: 10.3389/fpubh.2026.1818765

Artificial intelligence and clean/dirty energy markets: tail-based pairwise connectedness and portfolio implications

Bechir Raggad, Elie Bouri • Future Business Journal (2025)

Abstract This study investigates the return and volatility connectedness between artificial intelligence (AI) stock ETF and each segment of the energy markets, namely clean energy, dirty energy, and WTI oil. Using a quantile-on-quantile con...

DOAJ Open Access (DOAJ) DOI: 10.1186/s43093-025-00451-8

Exploring Asymmetric Nexus Between CO2 Emissions, Environmental Pollution, and Household Health Expenditure in China

Zeeshan M, Han J, Rehman A, Ullah I et al. • Risk Management and Healthcare Policy (2021)

Muhammad Zeeshan,1 Jiabin Han,1 Alam Rehman,2 Irfan Ullah,3 Fakhr E Alam Afridi4 1College of Business Administration, Liaoning Technical University, Xingcheng, Liaoning Province, 125105, People’s Republic of China; 2Faculty of Managem...

DOAJ Open Access (DOAJ)

The Impact of Fiscal Policy on Macroeconomic Conditions in Pakistan: Insights from a Structural Vector Autoregression Analysis

Sarnaila Sharif, Saima Nawaz • Business Review (2024)

This article explores the relationship between fiscal policy and macroeconomic conditions in Pakistan using a robust Structural Vector Autoregression (SVAR) model. Since fiscal shock has the tendency to put a constraint on the future path o...

DOAJ Open Access (DOAJ) DOI: 10.54784/1990-6587.1581

Effects of Background Solar Wind and Drag Force on the Propagation of Coronal-mass-ejection-driven Shocks

Chin-Chun Wu, Kan Liou, Brian E. Wood, Lynn Hutting • The Astrophysical Journal (2024)

The propagation of interplanetary shocks, particularly those driven by coronal mass ejections (CMEs), is still an outstanding question in heliophysics and space weather forecasting. Here, we address the effects of the ambient solar wind on ...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ad88ee

Machine learning-based dynamic risk measurement for white sugar futures under geopolitical risks

Zihao Qiu, Siyu Chen, Zixin Feng, Ruitong Luo et al. • Frontiers in Physics (2025)

Futures, as significant financial derivatives, play a crucial role in financial markets by fulfilling price discovery functions and providing efficient risk hedging tools. Against the backdrop of geopolitical conflicts, market risk emerges ...

DOAJ Open Access (DOAJ) DOI: 10.3389/fphy.2025.1674717

Research on scientific research system resilience based on WoS data

Feng Zhang, Aolin Wang, Nanrong He, Xiaojing Chen et al. • International Journal of Innovation Studies (2026)

In recent years, research systems have faced increasingly complex sustainability challenges, and improving system resilience has become the key to ensuring their continuous and efficient operation. Based on the data of Web of Science co-aut...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.ijis.2026.100182

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

New dynamics in producer-to-consumer price transmission in Spain’s tomato supply chain

Yasmine Bedoui, Zein Kallas, Adrià Menéndez i Molist, Omar Vicente Guadarrama Fuentes et al. • New Medit (2026)

Pricing is an essential element that significantly impacts the supply chain mechanisms. The primary objective of this study is to explore the transmission of producer-to-consumer prices in the Spanish fresh tomato industry. Employing the Th...

DOAJ Open Access (DOAJ) DOI: 10.30682/nm2601h

How working capital management affects financial sustainability in airline groups centered in the European market

Berk Yildiz, Gulden Oner • European Transport Research Review (2026)

Abstract Air transport has become the dominant mode of passenger mobility worldwide, yet airline groups remain highly vulnerable to financial distress because of volatile demand, high fixed costs, and exposure to systemic shocks. This study...

DOAJ Open Access (DOAJ) DOI: 10.1186/s12544-026-00865-7

Formation of China’s Capital Market

A. Yu. Mikhaylov • E-Management (2024)

The article presents an in-depth analysis of the formation and development of the capital market (stocks and bonds segment) in China. The factors determining the valuation of shares that are in circulation are highlighted. While the first f...

DOAJ Open Access (DOAJ) DOI: 10.26425/2658-3445-2023-6-4-64-71

Diffuse hypertrophic obstructive cardiomyopathy complicated by apical ventricular aneurysm and excessive left ventricular trabeculation: a case report

Ying Li, Ying Li, Na Jia, Xinyue Li et al. • Frontiers in Cardiovascular Medicine (2026)

This article reports a rare case of diffuse hypertrophic obstructive cardiomyopathy complicated with left ventricular apical aneurysm and excessive trabeculation. Genetic testing of the patient revealed a heterozygous variant of the MYBPC3 ...

DOAJ Open Access (DOAJ) DOI: 10.3389/fcvm.2026.1753832

Social Security and Fighting Poverty in Tunisia

Hasna Khemili, Mounir Belloumi • Economies (2018)

The objective of this study was to examine the role of social security in fighting poverty in Metlaoui, Tunisia, using survey data collected between July 2012 and January 2014, covering 200 poor households. We used questionnaire data, which...

DOAJ Open Access (DOAJ) DOI: 10.3390/economies6010012

Human capital and the informal economy as asymmetric drivers of the ecological footprint in Bangladesh

Md. Golam Kibria, Mahinur Begum Mimi, Ismay Jahan, Jeremy Ko et al. • Discover Sustainability (2026)

Abstract This article assesses the impact of the shadow economy on Bangladesh’s ecological footprint and how this association is influenced by the country’s level of human capital. Using annual data from 1994 to 2020, it employs both the Li...

DOAJ Open Access (DOAJ) DOI: 10.1007/s43621-026-03721-9

Long-term relationship of crude palm oil commodity pricing under structural break

Monsurat Ayojimi Salami, Razali Haron • Journal of Capital Markets Studies (2018)

Purpose - The purpose of this paper is to examine the pricing efficiency of the Malaysian crude palm oil (CPO) market before and after the structural break. This study uses the daily closing price of CPO and CPO futures (CPO-F) for the peri...

DOAJ Open Access (DOAJ) DOI: 10.1108/JCMS-09-2018-0032