Woody and Herbaceous Species Diversity Respond Differently to Environmental Variables in Semiarid Areas in Ghana by Reginald T. Guuroh, Bertrand F. Nero, Fousseni Folega, Kwame A. Oduro, Fred Kalanzi, Gloria K. Adeyiga, Adu‐Gyamfi Asamoah, Mark Appiah, Miracle Obeng, E. Amponsah

“…Species richness and the Shannon–Weiner Index are the response variables. Two‐way ANOVA was performed to test the interaction effects of climate and land‐use on species diversity; linear mixed‐effect models were used to test the relationships between multiple environmental variables, and structural equation modelling was used to determine the direct and indirect effects of climate and land‐use on species diversity. …”
Get full text

Performance Evaluation of Extended EWMA Chart for AR Model with Exogenous Variables by Totsaporn Muangngam, Yupaporn Areepong, Saowanit Sukparungsee

“…The primary goal of this study is to present the explicit formulas for calculating the ARL of the extended EWMA control chart for autoregressive models with exogenous variables (ARX) and exponential white noise. …”
Get full text

AI-Enhanced Photovoltaic Power Prediction Under Cross-Continental Dust Events and Air Composition Variability in the Mediterranean Region by Pavlos Nikolaidis

“…Using machine learning methods, particularly regression trees, the proposed approach evaluates the impact of key environmental variables on PV performance, with an emphasis on atmospheric dust transport and air composition variability. …”
Get full text

Analyzing the Composite Effect of Corruption and Socio-Economic Variables on Food Insecurity in Pakistan: A Comprehensive Study by Saira Habib, Hasnain Didar

Get full text

Interannual variability of moisture sources and isotopic composition of Meiyu-Baiu rainfall in southwestern Japan: Importance of Asian monsoon moisture for extreme rainfall events by Xiaoyang Li, Ryuichi Kawamura, Kimpei Ichiyanagi, Kei Yoshimura

“…However, the contributions and thermodynamic processes of major moisture sources, along with their interannual variability, remain unclear. To better understand the underlying atmospheric processes responsible for interannual variability of Meiy-Baiu rainfall, we utilized an isotopic regional spectral model to investigate the moisture sources and isotopic composition of Meiyu-Baiu rainfall in southwestern Japan from 2004 to 2023. …”
Get full text

Temperature‐mediated responses of carbon fluxes to precipitation variabilities in an alpine meadow ecosystem on the Tibetan Plateau by Ning Chen, Yangjian Zhang, Juntao Zhu, Jiaxing Zu, Ke Huang, Junxiang Li, Yaojie Liu, Nan Cong, Ze Tang, Li Wang, Yixuan Zhu

Get full text

A composite index-based insurance instrument for managing the financial risk of variable hydrometeorology for electric utilities by Yash Amonkar, Corey Pahel-Short, Amir Zeighami, Yufei Su, Jordan D Kern, Gregory W Characklis

“…Extreme temperatures often increase electricity demand, raising utility costs, while drought reduces hydropower generation and often reduces revenues, with financial impacts potentially exacerbated by spikes in fuel prices, particularly natural gas. In this study, a model of the US. West Coast power system is combined with a financial risk model of a large California electric utility as it responds to variable hydrometeorology and market conditions, and is used to test the performance of a novel financial tool for managing risk. …”
Get full text

A Unique Bifuzzy Manufacturing Service Composition Model Using an Extended Teaching-Learning-Based Optimization Algorithm by Yushu Yang, Jie Lin, Zijuan Hu

“…Based on bifuzzy theory, we put forward a unique bifuzzy manufacturing service portfolio model. Through the application of the fuzzy variable to express quality of service (QoS) value of manufacturing services, this model also accounts for the preferences of manufacturing firms by allocating various weights to different sub-tasks. …”
Get full text

How do distinct facets of tree diversity and community assembly respond to environmental variables in the subtropical Atlantic Forest? by Joice Klipel, Rodrigo Scarton Bergamin, Marcus Vinicius Cianciaruso, Ana Carolina daSilva, Cristiane Follmann Jurinitz, João André Jarenkow, Kauane Maiara Bordin, Martin Molz, Pedro Higuchi, Rayana Caroline Picolotto, Vanderlei Júlio Debastiani, Sandra Cristina Müller

Get full text

Differential quadrature free vibration analysis of sandwich plates with curvilinear fiber variable stiffness composite face sheets by Zhenyu Zhou

“…The novelty of this study lies in the first application of an integrated DQM-FSDT approach to the free vibration analysis of sandwich plates with variable-stiffness curvilinear fiber composites. Notably, this method attains accuracy comparable to higher-order models (<5% error) with merely a 19 × 19 mesh. …”
Get full text

Monitoring and modelling of variables affecting isomerate octane number produced from an industrial isomerization process by Walaa Mahmoud Shehata, Mohamed Fathy Mohamed, Fatma Khalifa Gad

Get full text

Far-ultraviolet Flares and Variability of the Young M Dwarf AU Mic: A Nondetection of Planet C in Transit at Lyα by Keighley E. Rockcliffe, Elisabeth R. Newton, Allison Youngblood, Girish M. Duvvuri, Emily A. Gilbert, Peter Plavchan, Peter Gao, Hans-R. Müller, Adina D. Feinstein, Thomas Barclay, Eric D. Lopez

Get full text

Robust Variable Selection via Bayesian LASSO-Composite Quantile Regression with Empirical Likelihood: A Hybrid Sampling Approach by Ruisi Nan, Jingwei Wang, Hanfang Li, Youxi Luo

“…To address this critical limitation, we propose a novel empirical likelihood (EL)-based variable selection framework that integrates a Bayesian LASSO penalty within the composite quantile regression framework. …”
Get full text

Estimation of Relationship between Inflation and Relative Price Variability: Granger Causality and ARDL Modelling Approach by Saghir Pervaiz Ghauri, Rizwan Raheem Ahmed, Jolita Vveinhardt, Dalia Streimikiene

Get full text

Regularized win ratio regression for variable selection and risk prediction, with an application to a cardiovascular trial by Lu Mao

“…When applied to data from the HF-ACTION trial, the method identified prognostic variables and achieved superior predictive accuracy compared to regularized Cox models, as measured by overall and component-specific concordance indices. …”
Get full text

On a Schrödinger Equation in the Complex Space Variable by Manuel L. Esquível, Nadezhda P. Krasii, Philippe L. Didier

“…In the first one, we consider a wave associated with an object having the mass of an electron, showing that two waves, when considered as having only a free real space variable, are entangled, in the sense that the probability densities in the real variable are almost perfectly correlated. …”
Get full text

LINEAR PULSATION CHARACTERISTICS OF MIRA VARIABLE STARS by M.Y. Rahimi Ardabili

“…The linear adiabatic pulsation-periods of Mira variable stars have been derived. Approximately 2701[1]models were calculated for M = 0.7 MΘ to 2 MΘ stars with radii from 180 RΘ to 340 RΘ and luminosities from 2800 LΘ to 10,000 LΘ. …”
Get full text

Investigation and optimization of battery thermal management system based on composite phase change material and variable wall liquid cooling plate by Xiaoyong Gu, Wenbo Lei, Jiacheng Xi, Mengqiang Song

“…To mitigate the risk of thermal runaway in lithium-ion batteries, an efficient battery thermal management system (BTMS) assumes paramount importance. A BTMS based on composite phase change material (CPCM) and variable wall liquid cooling plate (LCP) is proposed in this research. …”
Get full text

The Optimization Design of Variable Valve Parameters for Internal Combustion Engines Considering the Energy Consumption of a Composite Electromagnetic Valve Mechanism by Xinyu Fan, Juyi Han, Jie Yin, Li Zheng, Wei Shao

“…To this end, this paper establishes a thermodynamic model of the engine based on the composite electromagnetic valve mechanism. …”
Get full text

Integrating MaxEnt with chemometrics to evaluate the impact of environmental variables on the coumarin content and the distribution of Angelica dahurica by Zhengkun Gan, Jun Ma, Xinyu Liu, Jiaxin Luo, Junke Li, Lili Pu, Guihua Jiang, Guihua Jiang, Yan Lian

“…With climate change potentially affecting both species distribution and secondary metabolite accumulation, there is a pressing need to integrate ecological and chemical data to guide future cultivation and resource utilization strategies.MethodsThis study combined the Maximum Entropy (MaxEnt) ecological modeling approach with chemometric analysis to (i) predict the suitable habitat distribution of A. dahurica under current and future climate scenarios and (ii) evaluate the correlation between environmental variables and coumarin accumulation.Results(1) The key environmental variables influencing the distribution of A. dahurica were identified as BIO_13 (precipitation of the wettest month), BIO_11 (mean temperature of the coldest quarter), and elevation (DEM). (2) Presently, the highly suitable regions for A. dahurica cultivation are mainly in Sichuan, Henan, and Hebei provinces. (3) Under future climate scenarios, the highly suitable habitats are expected to expand and shift geographically, especially toward Henan and Jiaozuo, with parts of Hubei, Shaanxi, and Shandong transitioning into highly suitable zones. (4) Chemometric analyses revealed that A. dahurica samples from highly suitable areas contained significantly higher total coumarin content than those from medium-suitability regions. (5) A strong correlation was observed between key environmental factors (especially BIO_11 and DEM) and the relative content of five major coumarin components.(6) Spatial mapping of chemical composition indicated distinct regional differences in coumarin distribution, suggesting the potential for geoherbalism-based classification.DiscussionThe integration of ecological modeling with chemical analysis provides a powerful framework for understanding the impact of environmental variables on both the distribution and chemical quality of A. dahurica. …”
Get full text