Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological Variation by Shengzhi Huang, Jianxia Chang, Qiang Huang, Yimin Wang, Yutong Chen

“…Besides, based on the law of tolerance and ecological adaptation theory, the maximum instream ecological flow is calculated, which is the highest frequency of the monthly flow based on the GEV distribution and very suitable for healthy development of the river ecosystems. …”
Get full text

A Method for Quantitative Evaluation of Seismic Stability of Loess Slope Based on the Shaking Table Model Test by Pu Xiaowu, Wang Lanmin, Wang Ping, Chai Shaofeng, Xu Shiyang

“…Based on the behavior similarity theory, for the shaking table model test of slope whose soil cohesion cannot meet the similarity ratio, the reduction method of applying the critical instability acceleration obtained from the model test to prototype slope is proposed. …”
Get full text

Global Teleconnections of Rapid Ionospheric Fluctuations as Observed via GNSS Measurements by Enric Monte-Moreno, Manuel Hernandez-Pajares, Heng Yang

Get full text

Application of Modified Hoek–Brown Strength Criterion in Water-Rich Soft Rock Tunnel by Xianghui Deng, Yuncai Wang, Rui Wang, Daohong Xia, Zhiqing Zhao

“…In accordance with the classical elastic–plastic mechanics theory, the stress, strain, and displacement calculation formulas of the tunnel surrounding rock are derived. …”
Get full text

Modeling and Data Analysis of Bistatic Bottom Reverberation from a Towed Horizontal Array by Zhaohua Su, Jie Zhuo, Chao Sun

“…In this study, a bistatic reverberation model based on ray theory is presented to interpret the experimental phenomena. …”
Get full text

Effects of congruent and incongruent appetitive and aversive well-being comparisons on depression, post-traumatic stress, and self-esteem by Emily N. Keppler, Nexhmedin Morina, Pascal Schlechter

“…Some evidence indicated more pronounced depressive symptoms and lower self-esteem (but not PTSD) for the preponderance of aversive over appetitive comparisons.Conclusions: The effects of congruent and incongruent aversive and appetitive comparisons as well as a potentially more crucial role of aversive than appetitive well-being comparisons in depression and self-esteem align with comparison theory.…”
Get full text

Car Purchase Intention Modeling in the Context of COVID-19: An Integrated Analysis of Impact Range and Impact Asymmetry by Xiaoyu Zhang, Chunfu Shao, Bobin Wang, Shichen Huang, Xiong Yang

“…The contributions of influencing factors are derived from the gradient boosting decision tree model and the asymmetric effects of attitudinal factors are further analyzed based on the three-factor theory. The comprehensive importance hierarchies of the two dependent variables are constructed through the integrated analysis of impact range and impact asymmetry. …”
Get full text

Stability of Close Chambers Surrounding Rock in Deep and Comprehensive Control Technology by Weijian Yu, Fangfang Liu

“…Firstly, the numerical calculation of the excavation chamber was, respectively, carried out in different ways with the propagation theory of the excavation disturbance wave. The results show that the interaction of adjacent chamber excavation was more intense. …”
Get full text

Dynamic regimes in planetary cores: $\tau $–$\ell $ diagrams by Nataf, Henri-Claude, Schaeffer, Nathanaël

“…A complete toolbox is provided, allowing everyone to construct a $\tau $–$\ell $ diagram of a numerical simulation, a laboratory experiment, a theory, or a natural object.…”
Get full text

Aging of Cross-Linked Polyethylene Insulation Cable Lines by I. V. Oleksyuk

“…When designing and operating cable lines, it is necessary to estimate the duration of the actual service life under various operating conditions. In theory, there are several expressions for calculating the service life of a cable line when exposed to temperature, humidity, electric field and aggressive environments, but all of them are not applicable in practice due to the presence of a large number of coefficients whose values are unknown. …”
Get full text

A review of internal communication research in South Africa by Lucinda Bella-May Sutton

“…The most frequently used theories were relationship management theory and reputation management theories, and a qualitative research approach was the predominant methodical approach used, with non-probability (purposive) sampling, even though questionnaires were the prevalent data collection tools. …”
Get full text

A Guide to Light-Cone PDFs from Lattice QCD: An Overview of Approaches, Techniques, and Results by Krzysztof Cichy, Martha Constantinou

“…Within the theory of Quantum Chromodynamics (QCD), the rich structure of hadrons can be quantitatively characterized, among others, using a basis of universal nonperturbative functions: parton distribution functions (PDFs), generalized parton distributions (GPDs), transverse momentum dependent parton distributions (TMDs), and distribution amplitudes (DAs). …”
Get full text

Presenting complex, balanced scorecard model and two-level data envelopment analysis for calculating the performance of social institutions by Mehrdad Navabakhsh, Nasser Shahsavari Pour

“…These parameters rely on experience, observation, experiment, hypothesis, and theory. Balanced Scorecard (BSC) seeks to make a balance between financial and economic objectives as outcomes of past performance (past-oriented indexes) and three indexes of customer processes, learning and growth, and development of human and social forces (future-oriented).Data Envelopment Analysis (DEA) is a non-parametric method for measuring the outputs or efficiency of homogeneous units with different inputs and outputs. …”
Get full text

Global and national university rankings: A multivariate analysis by Т. А. Salimova, I. А. Ivanova, Е. А. Sysoeva

“…The current paper presents a system analysis of databases of rating systems and an aggregation of independent evaluations of global and national rankings of HEIs using the methodology of league table analysis based on mathematical apparatus of the voting theory. The dependence of global and national university rankings indicators was investigated using correlation, cluster, factor, regression (linear and polynomial) and dispersion methods of analysis.Results and scientific novelty. …”
Get full text

Study on the difference in cardiopulmonary endurance between different genders and traditional Chinese medicine constitutions by ZHU Limei, LIN Jia, WU Xiaoxu, WANG Kewen, ZHONG Wenliang

“…Objective To explore the differences in cardiopulmonary endurance between different genders and constitutions based on the constitution theory of traditional Chinese medicine.Methods Standardized training students at Nanping People's Hospital from July 2023 to April 2024 were selected to evaluate the constitution of traditional Chinese medicine and carry out cardiopulmonary exercise tests. …”
Get full text

A Novel Model-Free Intelligent Proportional-Integral Supertwisting Nonlinear Fractional-Order Sliding Mode Control of PMSM Speed Regulation System by Peng Gao, Xiaodong Lv, Huimin Ouyang, Lei Mei, Guangming Zhang

“…Moreover, the stability of the proposed hybrid MF-iPI-ST-NLFOSMC strategy is proved by the Lyapunov stability theorem and fractional-order theory. Finally, the simulations and comparison results verify that the hybrid MF-iPI-ST-NLFOSMC strategy proposed in this paper has better performance than the other model-free controllers in terms of the static characteristic, dynamic characteristic, and robustness.…”
Get full text

Universal validity of the second law of information thermodynamics by Shintaro Minagawa, M. Hamed Mohammady, Kenta Sakai, Kohtaro Kato, Francesco Buscemi

“…This simplification contributes to a clearer understanding of the theory.…”
Get full text

Shaping Outflows and Jets by Ambient Pressure: A Unified Framework by Willem A. Baan, Tao An

“…By extending classical de Laval nozzle theory to account for ambient pressure gradients, we present a unified framework that successfully describes outflows from young stellar objects to active galactic nuclei. …”
Get full text

Scale-free topology optimization for software-defined wireless sensor networks: A cyber-physical system by Ru Huang, Xiaoli Chu, Jie Zhang, Yu Hen Hu

“…This article presents a wireless sensor networks topology optimization model based on complex network theory and cyber-physical systems using software-defined wireless sensor network architecture. …”
Get full text

Prediction of High-ozone Events Using GAM, SMOTE, and Tail Dependence Approaches in Texas (2005–2019) by Benjamin Brown-Steiner, Xiong Zhou, Matthew J. Alvarado, Brook T. Russell

“…Abstract We test three methods for ozone prediction in the El Paso (ELP) and Houston-Galveston-Brazoria (HGB) regions of Texas from 2005–2019: (1) a Generalized Additive Model (GAMs) approach; (2) a GAM approach with the addition of the Synthetic Minority Over-sampling TEchnique (SMOTE) and (3) a tail dependence modeling approach based in extreme value theory (EVT). We also compare the feature selection capabilities of the tail dependence approach to other feature selection methods. …”
Get full text