A New Fractal-Based Miniaturized Dual Band Patch Antenna for RF Energy Harvesting by Sika Shrestha, Seong Ro Lee, Dong-You Choi

“…In this work, a miniaturized dual band antenna operable at 2.45 and 5.8 GHz is constructed by modifying the standard microstrip patch antenna geometry into a fractal structure. In addition to miniaturization and dual band nature, the proposed antenna also removes unwanted harmonics without the use of additional filter component. …”
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Who’s In and Who’s Out? War News from Mexico and the Framing of Evil by Alan Hirsch

“…That the blacks, who were most directly affected by the war, are ignored by the whites above them, implies a political statement. The painting’s geometry suggests that it is also a painting about painting. …”
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The Higgs mechanism — Hasse diagrams for symplectic singularities by Antoine Bourget, Santiago Cabrera, Julius F. Grimminger, Amihay Hanany, Marcus Sperling, Anton Zajac, Zhenghao Zhong

“…While the unbroken gauge symmetry and the number of flat directions are obtainable by classical field theory analysis for Lagrangian theories, our approach allows us to characterise the geometry of the Higgs branch by a Hasse diagram with symplectic leaves and transverse slices, thus refining the analysis and extending it to non-Lagrangian theories. …”
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Quantifying Fractal Dimension in Integrated Experimental Data of Tight Sandstones by Dazhong Ren, Rongxi Li, Dengke Liu, Yuhong Li, Na Liu, Fu Yang

“…In this research, we report a new criterion for pore structure typing based on the fractal geometry theory. The fractal dimension values were first accurately calculated through intrusion and nonintrusion methods. …”
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Development and Validation of a New Boundary Condition for Intake Analysis with Distortion by Foad Mehdi Zadeh, Jean-Yves Trépanier, Eddy Petro

“…In general, this approach is sufficient to analyze intake geometry for low distortion at the fan face, because in this case the interaction of the fan with the inlet flow can be neglected. …”
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Cryogenic Characterization of Low-Frequency Noise in 40-nm CMOS by Gerd Kiene, Sadik Ilik, Luigi Mastrodomenico, Masoud Babaie, Fabio Sebastiano

“…The noise is measured over a wide range of bias conditions and geometries to generate a comprehensive overview of LFN in this technology. …”
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Electromagnetic Low-Frequency Dipolar Excitation of Two Metal Spheres in a Conductive Medium by Panayiotis Vafeas, Polycarpos K. Papadopoulos, Dominique Lesselier

“…In such physical applications, where two bodies are placed near one another, the 3D bispherical geometry fits perfectly. Considering two solid impenetrable (metallic) obstacles, excited by a magnetic dipole, the scattering boundary value problem is attacked via rigorous low-frequency expansions in terms of integral powers (ik)n, where n≥0, k being the complex wave number of the exterior medium, for the incident, scattered, and total non-axisymmetric electric and magnetic fields. …”
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Observation of two-dimensional time-reversal broken non-Abelian topological states by Yuze Hu, Mingyu Tong, Tian Jiang, Jian-Hua Jiang, Hongsheng Chen, Yihao Yang

“…Abstract Going beyond the conventional theory, non-Abelian band topology reveals the global quantum geometry of multiple Bloch bands and unveils a new paradigm for topological physics. …”
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Establishment and Application of Stochastic Mesoscopic Concrete Model by Shufang Wang, Xiaoliang Zhai, Yangyang Gao, Jialu Li, Wei Hu

“…In addition, the results of the two cases show that the random aggregate geometry and aggregate content have a great impact on the physical and mechanical properties of concrete, and the randomness of the spatial distribution of aggregates makes the chloride ion transport path and the elastic modulus and Poisson’s ratio of concrete be random. …”
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Terahertz generation from surface of the bulk and monolayer tungsten diselenide by D. I. Khusyainov, A. V. Gorbatova, A. M. Buryakov

“…Generation of terahertz radiation from the surface of experimental samples was studied by the terahertz time-domain spectroscopy in reflection geometry. Bulk layered crystals of tungsten diselenide were grown by gas transport reactions. …”
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Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT by Yingfeng Sun, Yixin Zhao, Hongwei Zhang, Cun Zhang

“…Then, a gas diffusion-sorption coupled model was developed which can be applied to the nanoscale geometry imaged by synchrotron radiation nano-CT. The dynamic process of gas diffusion and ad-/desorption in the nanoscale microstructure of coal was visualized by the developed gas diffusion-adsorption coupled model and the numerical simulation based on MATLAB. …”
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Lessons from the High-resolution Spectroscopy of AW UMa and ϵ CrA: Is the Lucy Model Valid? by Slavek M. Rucinski

“…The tendency for systematically smaller values of q _ph may result from the overfilling of the primary lobe and underfilling of the secondary lobe relative to the Roche model geometry, as predicted by the K. Stȩpień model. Despite the observed moderate inter-systemic velocities, the photometric Lucy model may remain useful in providing approximate, though biased, results for the mass ratio. …”
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Development of an AI-Enabled Q-Agent for Making Data Offloading Decisions in a Multi-RAT Wireless Network by Murk Marvi, Adnan Aijaz, Anam Qureshi, Muhammad Khurram

“…We employ a model-free Q-learning algorithm for training of the Q-agent. We use stochastic geometry as a tool for estimating the average data rate offered by the network in a given region by considering the effect of interference. …”
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Investigation of deformation of shell with waffle reinforcement during rolling and development of method for compensation of deviations forms by E. V. Krivonos

“…It is necessary, on the basis of computer analysis and existing theories, to determine the stresses in the waffle shell that cause internal deformations that result in a general shape error, and to derive patterns under which external influence on the geometry of the mold at the time of bending is possible. …”
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INNOVATIVE APPROACH TO ENSURING THE QUALITY OF GAS TURBINE ENGINE PARTS PRODUCED BY SELECTIVE LASER SINTERING FOR UAV by Yevhen VYSHNEPOLSKYI, Dmytro PAVLENKO, Larysa TUMARCHENKO

“…A characteristic feature of the obtained results is the ability to control the quality parameters of the surface layer by varying the diamond smoothing operating parameters – smoothing force, feed, radius, and geometry of the smoother's working part. The established regularities of the smoothing operating parameters have an impact on the quality characteristics of the surface. …”
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Entropies in Electric Circuits by Angel Cuadras, Victoria J. Ovejas, Herminio Martínez-García

“…The objective is to introduce entropy in electric circuit analysis by considering the impact of system geometry on energy conversion in the circuit. Thermal entropy is derived from thermodynamics, whereas configurational entropy is derived from network modelling. …”
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Microwave Assisted Synthesis, Spectral and Antifungal Studies of 2-Phenyl-N,N′-bis(pyridin-4-ylcarbonyl)butanediamide Ligand and Its Metal Complexes by Rayees Ahmad Shiekh, Maqsood Ahmad Malik, Shaeel Ahmed Al-Thabaiti, Mohmmad Younus Wani, Arshid Nabi

“…Different physical and spectroscopic techniques were used to investigate the structural features of the synthesized compounds, which supported an octahedral geometry for these complexes. In vitro antifungal activity of the ligand and its metal complexes revealed that the metal complexes are highly active compared to the standard drug. …”
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Fundamental charges for dual-unitary circuits by Tom Holden-Dye, Lluis Masanes, Arijeet Pal

“…This dual-unitarity restricts the dynamics of local operators in these circuits: the support of any such operator must grow at the effective speed of light of the system, along one or both of the edges of a causal light cone set by the geometry of the circuit. Using this property, it is shown here that for 1+1D dual-unitary circuits the set of width-$w$ conserved densities (constructed from operators supported over $w$ consecutive sites) is in one-to-one correspondence with the set of width-$w$ solitons – operators which, up to a multiplicative phase, are simply spatially translated at the effective speed of light by the dual-unitary dynamics. …”
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A Time Variant Outdoor-to-Indoor Channel Model for Mobile Radio Based Navigation Applications by Wei Wang, Thomas Jost, Uwe-Carsten Fiebig, Wolfgang Koch

“…In this paper, an outdoor-to-indoor channel model is proposed based on an extension of the geometry-based stochastic modeling approach to fulfill the requirements. …”
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Vibration Based Diagnosis for Planetary Gearboxes Using an Analytical Model by Liu Hong, Yongzhi Qu, Yuegang Tan, Mingyao Liu, Zude Zhou

“…This analytical model is easy to implement because the only prerequisite information is the basic geometry of the planetary gear-set. Afterwards, an automated diagnostic scheme is proposed to cope with the challenges associated with the characteristic configuration of planetary gearboxes. …”
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