A Fast Image Encryption Scheme Based on a Four-Dimensional Variable-Parameter Hyperchaotic Map and Cyclic Shift Strategy by Guidong Zhang, Yanhao Zhao, Yanpei Zheng, Yulin Shen, Jun Huang

“…The proposed system not only features a wider parameter range but also exhibits more complex and unpredictable chaotic behavior, as confirmed by multiple rigorous tests. …”
Get full text

Energy-Saving Effects of the Intermittent Control of Pumps in Ground Source Variable Refrigerant Flow Systems with a Buffer Water Tank by Toya Tanaka, Sayaka Kindaichi, Keita Kawasaki, Daisaku Nishina

“…Variable refrigerant flow (VRF) systems are common air-conditioning systems used in regions with moderate climates that have cooling and heating demands. …”
Get full text

Robust trajectory tracking of a 3D-printed rapid prototyping manipulator through variable gain super-twisting algorithm by Sujian Wu, Jinyuan Hu, Guohua Shi, Jinyu Fan, Yunyao Li

“…The motion for using VGSTA, apart from its property of providing robustness to the system with respect to the unmodeled part and uncertainties, is also given by its capability of enforcing the controlled objects to the sliding surface in finite time and more explicit tuning parameter, allowing one to tune the system dynamic performance more simply. …”
Get full text

Topological optimization design of SLM additive manufactured unmanned aerial vehicle bearing joint structure based on variable density method by Shuaichao YUAN, Jianfeng WANG, Yuhang DUAN, Lujing HAO, Xiaohong ZHAN

“…This indicates that Scheme II is more efficient in maintaining structural integrity under load, making it a more viable option for the UAV fuselage’s load-bearing joint structure. …”
Get full text

Variance-based sensitivity analysis of climate variability impact on crop yield using machine learning: A case study in Jordan by Yingqiang Xu, Abeer Albalawneh, Maysoon Al-Zoubi, Hiba Baroud

“…Climate variability poses a significant threat to crop production in arid and semi-arid regions, where droughts are becoming more frequent and intense. …”
Get full text

Four distinct peer interaction variables as moderators of the fearful temperament‐anxiety association, using data from the Generation R Study by Anita Harrewijn, Rosa H. Mulder, Marinus H. vanIJzendoorn, Matthias J. Wieser, Pauline W. Jansen

“…Results Children with higher parent‐reported, but not observed, fearful temperament showed more anxiety symptoms as adolescents, β = 0.07, p < 0.001. …”
Get full text

Estimating the moisture regime in variably saturated arsenic contaminated alluvial sediments by using hydrus-1d with daily meteorological data by Dimitar ANTONOV, Tsvetan KOTSEV, Aleksey BENDEREV, Nathalie VAN MEIR, Petar GERGINOV, Velimira STOYANOVA, Emilia TCHERKEZOVA

Get full text

Design of a Real-Time Adaptively Tuned Dynamic Vibration Absorber with a Variable Stiffness Property Using Magnetorheological Elastomer by Toshihiko Komatsuzaki, Yoshio Iwata

Get full text

The influence of type 2 diabetes mellitus on the frequency and complexity of ventricular arrhythmias and heart rate variability in patients after myocardial infarction by Stoičkov Viktor, Deljanin-Ilić Marina, Stojanović Dijana, Ilić Stevan, Šarić Sandra, Petrović Dejan, Kostić Tomislav, Cvetković Jovana, Stojanović Sanja, Golubović Mlađan

“…All of the patients were subjected to the following procedures: standard ECG according to which the corrected QT dispersion (QTdc) was calculated, exercise stress test, and 24-hour holter monitoring according to which, the four parameters of time domain of heart rate variability (HRV) were analyzed: standard deviation of all normal RR intervals during 24 hours (SDNN), standard deviation of the averages of normal RR intervals in all five-minute segments during 24 hours (SDANN), the square root of the mean of the sum of the squares of differences between adjacent normal (RMS-SD), and percentage of consequtive RR intervals which differed for more than 50 ms during 24 hours (NN > 50 ms). …”
Get full text

Proteins derived from Bombyx batryticatus utilizing variable ultrasound powers: Evaluation of structural attributes, functional characteristics, and antioxidant capacities by Jing-ya Wang, Xi Peng, Qiao-Ling Deng, Zhi-Kun Wang, Kui-Xu Gao, Yao Wang, Yu-jie Liu, Mei-bian Hu

Get full text

Automated classification of stress and relaxation responses in major depressive disorder, panic disorder, and healthy participants via heart rate variability by Sangwon Byun, Ah Young Kim, Min-Sup Shin, Hong Jin Jeon, Hong Jin Jeon, Chul-Hyun Cho, Chul-Hyun Cho

“…The HC group demonstrated greater ΔHRV fluctuation in a larger number of and more significant features than the patient groups, potentially contributing to higher accuracy. …”
Get full text

Observational study comparing the accuracy/variability between the ERSPC and the PCPT risk calculators for the prediction of significant prostate cancer in patients with PSA by Enrique Gomez Gomez, Juan José Salamanca Bustos, Julia Carrasco Valiente, Jose Luis Fernandez Rueda, Ana Blanca, José Valero Rosa, Ines Bravo Arrebola, Javier Marquez López, Juan Manuel Jimenez Vacas, Maria José Requena Tapia, Raul Miguel Luque

“…However, ERSPC-RC seems to be more stable for intraindividual PSA variations.…”
Get full text

A novel exponentially fitted finite-difference method for time-fractional singularly perturbed convection–diffusion problems with variable coefficients by Worku Tilahun Aniley, Gemechis File Duressa

“…The numerical results match the theoretical predictions and demonstrate that the proposed method is more accurate than some recent existing methods.…”
Get full text

Multi-objective data collecting strategies for wireless sensor network based on the time variable multi-salesman problem and genetic algorithm by Hao FENG, Lei LUO, Yong WANG, Miao YE

“…Comparing to the traditional data collecting method with data route,the technology of wireless mobile nodes has gradually became a new technique in the wireless sensor network.As the solution to the visiting order of the static nodes was an intrinsic NP-hard problem,a more general multi-objective data colleting strategies based on multi-mobile nodes was proposed.The proposed data collecting technique was abstracted as a model of time variable multiple traveling salesman problem.Belonging to a discrete optimal problem,the proposed model was solved by with a proposed hybrid genetic algorithm to determine the paths of the multi-mobile nodes.The convergence analysis of the proposed algorithm was given.With the experiment of open dataset,the proposed model based on the time variable multiple traveling salesman problem and the proposed hybrid genetic algorithm certify a certain improvement to the efficiency and real-time ability.…”
Get full text

Estimating the moisture regime in variably saturated arsenic contaminated alluvial sediments by using hydrus-1d with daily meteorological data by Dimitar ANTONOV, Tsvetan KOTSEV, Aleksey BENDEREV, Nathalie VAN MEIR, Petar GERGINOV, Velimira STOYANOVA, Emilia TCHERKEZOVA

Get full text

Critical review, meta-analysis and harmonization of life cycle assessment of mass timber construction: reducing variability in environmental impact estimates by Muzan Williams Ijeoma, Sovanroth Ou, Amin Nabati, Hao Chen, Brandon Ross, Weichiang Pang, Michael Carbajales-Dale

“…The harmonization significantly reduced the variability, improving comparability across studies. …”
Get full text

Insight on the relationship between heart rate variability parameters and the risk of stroke among non-valvular paroxysmal atrial fibrillation patients by Yaohua Bu, Fabrice Yves Ndjana Lessomo, Zhiquan Wang

“…Conclusion This study found that abnormal variation in HRV parameters was more observed in patients with acute ischemic stroke. …”
Get full text

An Operational Matrix Technique Based on Chebyshev Polynomials for Solving Mixed Volterra-Fredholm Delay Integro-Differential Equations of Variable-Order by Kamal R. Raslan, Khalid K. Ali, Emad M. H. Mohamed, Jihad A. Younis, Mohamed A. Abd El salam

“…The introduced model is a more general form of linear fractional VO pantograph, neutral, and mixed Fredholm–Volterra integro-differential equations with delay arguments. …”
Get full text

Unraveling natural carbonate variability in Narragansett Bay, RI using multiple high temporal resolution pH time series by Abigail Baskind, Georgia Ahumada, Kristofer Gomes, Heather Stoffel, Shuai Gu, Andrew J Davies, Andrew J Davies, Hongjie Wang

“…However, this continuous absorption of CO2 by seawater triggers ocean acidification (OA), a process in which water becomes more acidic and more depleted in carbonate ions that are essential for calcifiers. …”
Get full text

The Enigmatic, Highly Variable, High-Mass Young Stellar Object Mol 12: A New Extreme Herbig Be (Proto)star by Mauricio Tapia, Paolo Persi, Jesús Hernández, Nuria Calvet

Get full text