Some Comments on the Nonlinear Dynamics of a Portal Frame under Base Excitation by Aline Souza de Paula, José Manoel Balthazar, Jorge Luis Palacios Felix

“…The numerical analysis shows a complex behavior of the system, which can be observed by phase spaces, Poincaré sections and bifurcation diagrams.…”
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A Third-Order Consensus Approach for Vehicle Platoon with Intervehicle Communication by Jianzhong Chen, Dongyang Bai, Huan Liang, Yang Zhou

“…For addressing the platoon problem, a realistic, third-order vehicle dynamics model is used, and the spacing policy and the vehicle acceleration error are embedded into the consensus protocol. …”
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Asymptotic modeling of viscoelastic thin plates and slender beams, a unifying approach by Terapabkajornded, Yotsawat, Orankitjaroen, Somsak, Licht, Christian, Weller, Thibaut

“…A dimension reduction problem is tackled using Trotter’s theory of convergence of semi-groups of operators acting on variable spaces [1, 2]. We show that this framework makes it possible to perform the asymptotic analysis for both viscoelastic thin plates and slender beams in a unifying manner. …”
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Topology of Locally and Non-Locally Generalized Derivatives by Dimiter Prodanov

“…The same principle is applied to Gateaux derivatives and gradients in Euclidean spaces. This article also introduces a generalization of the derivatives from the perspective of the modulus of continuity and characterizes their sets of discontinuities. …”
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A Study of Millisecond Blasting on High Bench at Barun Iron Ore Operation by Pengfei Zhang, Runcai Bai, Xue Sun, Haoran Li, Honglu Fei, Shijie Bao

“…To improve the productivity and efficient of modern large-scale open-cut mines, a number of technologies are developed and trialed, including new blasting equipment, larger blasting holes, high benches, air spacing, and short-delay blasting within holes. However, the relative blasting parameters need field calibration and further investigation of theories on these techniques are required. …”
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Geopolitical Attitude in Urban Tourism Competition Using Tourism Attraction Index (Case Study: Tehran City) by arash ghorbani sepehr, Afshin Mottaghi, Zahra Ansari, Morad Delalat

“…In order to achieve such a definition, the mentioned documents include promotion of the role and position of Tehran in transnational, national and regional levels, economic development and prosperity of the city of Tehran, improvement of communication networks, environmental protection, active restitution and conservation of natural heritage , Historical and cultural city of Tehran, and the development of green spaces, public spaces, recreation and tourism are predicted. …”
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University proceedings. Volga region. Natural sciences by O.N. Kurdyukova, Yu.G. Zarutskaya

“…Results. In the green spaces in Lugansk there were 9 taxon of the genus Populus L. – Populus alba L., Populus alba var. bolleana (Lauche) Ed. …”

Gender Dynamics in Online Religious Leadership in Nigeria: Investigating How Digital Platforms Shape Communication, Authority, and Influence by Bukola L. Oloba, Anne M. Blankenship

“…Utilizing mediatization theory, this research investigated how online spaces allow women to bypass traditional patriarchal structures, engage broader audiences, and influence religious narratives. …”
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Analysis and Application of Vibration Damping Hole in Tunnel Working Face Based on Grey Correlation Analysis by Baofu Duan, Zhang Zhengxin, Zhang Chunwu, Zongjun Sun

“…Among them, the effect of damping hole spacing is particularly obvious. Combined with numerical calculation and comprehensive analysis of on-site construction effects, it is found that during the construction process, the distance between the vibration damping holes is 120 mm, the distance between the vibration damping holes and the explosion source is 2000 mm, the diameter of the vibration damping holes is more than 120 mm, the depth of the vibration damping holes is 1200–1500 mm, and double-row vibration-damping hole spacing is 50–100 mm, which can achieve a better vibration-damping effect. …”
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Research of the Backfill Body Compaction Ratio Based on Upward Backfill Safety Mining of the Close-Distance Coal Seam Group by Xingping Lai, Leiming Zhang, Yun Zhang, Pengfei Shan, Peifeng Wan, Kaiwen Mu

“…In this paper, the feasibility discrimination method of upward caving mining was adopted; it was found that when the coal seam spacing was small, the recovery was not possible due to the instability of the upper coal strata equilibrium structure caused by the mining. …”
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Study on the Stability of Slopes Reinforced by Composite Vegetation Combined with a Geogrid under Rainfall Conditions by Qizhi Hu, Yong Zhou, Gaoliang Tao

“…Four factors affect the slope stability: the depth of shrub reinforcement, depth of anchorage of trees, distribution of trees, and spacing of the geogrids. An orthogonal analysis considering these 4 factors with 3 levels was implemented. …”
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An Experimental and Numerical Investigation on the Initiation and Interaction of Double Cracks in Rocks under Hydromechanical Coupling by Jie Mei, Wanzhi Zhang

“…The results indicate that the increase in water pressure leads to the crack initiation being inclined to the original surfaces and the growth length along the crack fronts tending to be uniform; the small tensile stress zones are formed close to the crack tips, and significant compressive stress zones are formed at both sides of the crack surfaces; stress superposition and interaction occur when crack spacing is less than 2.5a; the interactive weakening effect is mainly present in the inner side (rock bridge zone) of cracks, while a certain degree of interactive enhancement effect exhibits in the outer sides; the cracks are much easier to initiate at the outer wing cracks when the spacing is less than the critical length (0.5a); and cracks with a dip angle of 45° are much easier to initiate at the endpoints of long axis. …”
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Monitoring ocular disease via optical nanostructures potentially applicable to corneal contact lens products by Bader AlQattan, Mohamed Elsherif, Fahad Alam, Haider Butt

“…Simulations were used to determine the spacing of the nanostructures, which were then produced and tested on the lens in ambient humidity and fully hydrated environments. …”
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Enhanced Oil Recovery by Cyclic Injection of Wettability Alteration Agent for Tight Reservoirs by Zhijie Wei, Yuyang Liu, Xiaodong Kang

“…Better EOR results can be achieved with decreasing oil viscosity, increasing matrix permeability, or decreasing fracture spacing. Cyclic surfactant injection is applicable to reservoirs with an oil viscosity of less than 7 mPa·s, a matrix permeability bigger than 0.01 mD, or a fracture spacing smaller than 150 m. …”
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Physical, Spatial, and Molecular Aspects of Extracellular Matrix of In Vivo Niches and Artificial Scaffolds Relevant to Stem Cells Research by Maria Akhmanova, Egor Osidak, Sergey Domogatsky, Sergey Rodin, Anna Domogatskaya

“…Spatial aspects include scaffold dimensionality (2D or 3D) and thickness; cell polarity; area, shape, and microscale topography of cell adhesion surface; epitope concentration, epitope clustering characteristics (number of epitopes per cluster, spacing between epitopes within cluster, spacing between separate clusters, cluster patterns, and level of disorder in epitope arrangement), and nanotopography. …”
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Explanation of Water Indices and Criteria in the Urban Landscape in Order to Improve the Quality of Urban Environments by Zeynab khaleghi, Farah Habib, Hossein Zabihi

“…Water as one of the most essential natural elements of landscape and consequently urban landscape from yesterday till today has had a great impact on the formation and effectiveness of urban spaces and its various effects have always stimulated human tendency towards beauty. …”
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Distribution of Sports Use in Sari City from the Perspective of Creative City Strategy by Taghi Ashouri, Masoumeh Kalateh Seifari, Hamidreza Ghezelseflou

“…Therefore, in order to achieve high utilization of Sari city spaces with creative city approach, it is recommended that city managers use citizen’s opinions and suggestions to provide plans in sports and using the art and attention to ancient sports cultures and the revival to create creativity in Sari city.…”
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Nature deficit and technology overuse in childhood. A correlational study by gender of its influence on sustainable identity construction in childhood by Sara Serrate González, Judit Alonso del Casar, Carmen Patino Alonso, José Manuel Muñoz Rodríguez

“…The results, based on a series of correlational analyses, suggest that there are significant differences by gender in preference for use and spaces, as well as differences in the effects of these preferences on their identity. …”
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Influence of advanced maternal age and gestational age on the morphology of human placenta by Jovičić Sanja, Ljubojević Vesna, Barudžija Maja, Amidžić Ljiljana, Škrbić Ranko, Nikolić Ivan R.

“…The parameters of volume density of chorionic villi, intervillous spaces and fibrinoids, as well as the thickness of the placental barrier were determined. …”
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Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled parts by WANG Xiang, ZHANG Ying, SUI Dashan, CHEN Zhongfeng, DONG Anping, GUO Zhao, QI Fei, YI Chushan, GUI Daxing

“…The overall defects of the casting are less； the micro-shrinkage average volume fraction of different parts is counted， and the highest is only 1.01%； the minimum secondary dendrite arm spacing（SDAS） in the thin-walled region is only 18.4 μm， and the maximum secondary dendrite spacing in the thick part is 38.8 μm； the as-cast microstructure of K4169 alloy is dendritic structure. …”
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