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๐Ÿ” farid charmchi ๐Ÿ“‚ Physics
Showing 75 results for "farid charmchi" in Physics
Physics Preprint PDF DOI

Vegetation Pattern Formation via Energy-Balance-Constrained Modeling

Chad M. Topaz ยท 2026

Vegetation in semi-arid environments self-organizes into striking spatial patterns -- bands, spots, labyrinths, and gaps -- with characteristic wavelengths on the order of tens to hundreds of meters. โ€ฆ

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Physics Preprint PDF DOI

Predicting CO and dust emission of star-forming galaxies

B. Vollmer, J. Braine, M. Soida, P. Gratier ยท 2026

How do Dwarf Galaxies differ from spirals? Does star formation produce radio and far-infrared emission in the same way as in spiral galaxies? Radio, FarIR, and CO emission depend on gas density, tempeโ€ฆ

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Physics Preprint PDF DOI

How inertia affects autotoxicity-mediated vegetation dynamics: from close-to to far-from-equilibrium patterns

Giancarlo Consolo, Carmela Curro, Gabriele Grifo, Annalisa Iuorio, Giovanna Valenti, Frits Veerman ยท 2026

In this work, the influence of inertial effects on the formation and evolution of vegetation patterns on sloped arid terrains is investigated from the onset of instability to far-from-equilibrium. Anaโ€ฆ

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Physics Preprint PDF DOI

Vegetation pattern formation induced by local growth outpacing susceptibility to non-local competition

Jelle van der Voort, Ricardo Martinez-Garcia, Arjen Doelman ยท 2025

In this work, we present and analyze a general framework for vegetation dynamics in arid and semi-arid ecosystems in which non-local interactions are purely competitive. The generality of the formulatโ€ฆ

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Physics Preprint PDF DOI

Humidity lightens the air but hinders human evaporative cooling in arid heat

Shri H. Viswanathan, Ankit Joshi, Isabella DeClair, Bryce Twidwell, Muhammad Abdullah, Lyle Bartels, Faisal Abedin, Joseph Rotella, Cibin T. Jose, Konrad Rykaczewski ยท 2025

Overheating poses significant threats to human health and productivity. In hot conditions, the human body primarily cools through sweat evaporation; however, we show that understanding of physical pheโ€ฆ

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Physics Preprint PDF DOI

Fractional Vegetation-Water Model in Arid and Semi-Arid Environments: Pattern Formation and Numerical Simulations

Maria Paola Speciale, Alessandra Jannelli ยท 2025

In this paper, we present a new fractional mathematical model to describe the dynamics and the interaction between plants and water in arid and semi-arid environments with and without slope. By the Caโ€ฆ

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Physics Preprint PDF DOI

Quantum precomputation: parallelizing cascade circuits and the Moore-Nilsson conjecture is false

Adam Bene Watts, Charles R. Chen, J. William Helton, Joseph Slote ยท 2025

Parallelization is a major challenge in quantum algorithms due to physical constraints like no-cloning. This is vividly illustrated by the conjecture of Moore and Nilsson from their seminal work on quโ€ฆ

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Physics Preprint PDF DOI

Self-similarity in creeping salt crystallization

R.J. Wijnhorst, M. Prat, N. Shahidzadeh ยท 2025

The self-amplifying creeping of salts can produce striking macroscopic structures, such as desert roses in arid regions and salt pillars near saline lakes. While these formations are visually remarkabโ€ฆ

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Physics Preprint PDF DOI

The Subaru-Asahi StarCam: Description of the system

Ichi Tanaka, Masanobu Higashiyama, Masayo Nakajima, Toyokazu Uda, Hitoshi Hasegawa, Mikiya Sato, Jun-ichi Watanabe ยท 2025

The Subaru-Asahi StarCam is a high-sensitivity live-streaming camera for meteor observation, installed on the dome of the Subaru Telescope at the summit area of Maunakea, Hawai'i. Although it was origโ€ฆ

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Physics Preprint PDF DOI

Ultrawhite structural starch film for sustainable cooling

Yang Liu, Andrew Caratenuto, Xuguang Zhang, Ying Mu, Youssef Jeyar, Mauro Antezza, Yi Zheng ยท 2025

Reducing human reliance on high-electricity-consuming cooling technologies like air conditioning is crucial for reshaping the global energy paradigm. Through utilizing natural starch gelatinization, fโ€ฆ

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Physics Preprint PDF DOI

Pattern formation and global analysis of a systematically reduced plant model in dryland environment

Yonghui Xia, Jianglong Xiao, Jianshe Yu ยท 2024

This paper delves into a systematically reduced plant system proposed by Ja\"ibi et al. [Phys. D, 2020] in arid area. They used the method of geometric singular perturbation to study the existence of โ€ฆ

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Physics Preprint PDF DOI

Finite Element Analysis of the Uncertainty Contribution from Mechanical Imperfections in the LNE's Thompson-Lampard Calculable Capacitor

Almazbek Imanaliev, Olivier Thevenot, Kamel Dougdag ยท 2024

Thompson-Lampard type calculable capacitors (TLCC) serve as electrical capacitance standards, enabling the realization of the farad in the International System of Units (SI) with a combined uncertaintโ€ฆ

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Physics Preprint PDF DOI

Effect of the neutral beam injector operational regime on the Alfven eigenmode saturation phase in DIII-D plasma

J Varela, D A Spong, L Garcia, Y Ghai, D Zarzoso, D del-Castillo-Negrete, H Betar, J Ortiz, D C Pace, M A Van Zeeland, X Du, R Sanchez, V Tribaldos, J M Reynolds-Barredo ยท 2023

The aim of this study is to analyze the effect of the neutral beam injector (NBI) operation regime on the saturation phase of the Alfven Eigenmodes (AEs) in DIII-D plasma. The analysis is done using tโ€ฆ

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Physics Preprint PDF DOI

On the Impact of ENSO Cycles and Climate Change on Telescope Sites in Northern Chile

Julia Victoria Seidel, Angel Otarola, Valentina Theron ยท 2023

The Atacama desert stands as the most arid, non-polar, region on Earth and has accommodated a considerable portion of the world's ground-based astronomical observatories for an extended period. The coโ€ฆ

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Physics Preprint PDF DOI

Post-Lie algebras of derivations and regularity structures

Jean-David Jacques, Lorenzo Zambotti ยท 2023

Given a commutative algebra $\mathcal{A}$, we exhibit a canonical structure of post-Lie algebra on the space $\mathcal{A}\otimes {\rm Der}(\mathcal{A})$ where ${\rm Der}(\mathcal{A})$ is the space of โ€ฆ

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Physics Preprint PDF DOI

Analysis of the ECH effect on the EPM/AEs stability in Heliotron J plasma using a Landau closure model

J. Varela, K. Nagasaki, S. Kobayashi, K. Nagaoka, P. Adulsiriswad, A. Cappa, S. Yamamoto, K.Y. Watanabe, D. A. Spong, L. Garcia, Y. Ghai, J. Ortiz ยท 2023

The aim of the present study is to analyze the effect of the electron cyclotron heating (ECH) on the linear stability of Alfven Eigenmodes (AE) and energetic particle modes (EPM) triggered by energetiโ€ฆ

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Physics Preprint PDF DOI

Simulation of the TAEs saturation phase in Large Helical Device device: MHD burst

J. Varela, D. A. Spong, Y. Todo, L. Garcia, Y. Ghai, J. Ortiz, R. Seki ยท 2023

The aim of the present study is to analyze the saturation regime of the Toroidal Alfven Eigenmodes (TAE) in the LHD plasma, particularly the MHD burst. The linear and nonlinear evolution of the TAEs aโ€ฆ

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Physics Preprint PDF DOI

Theoretical study of the Alfven Eigenmode stability in CFETR steady state discharges

J. Varela, J. Huang, D. A. Spong, J. Chen, V. Chan, L. Garcia, A. Wingen, Y. Ghai, Y. Zou ยท 2023

The aim of this study is to analyze the stability of Alfven Eigenmodes (AE) in the China Fusion Engineering Test Reactor (CFETR) plasma for steady state operations. The analysis is done using the gyroโ€ฆ

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Physics Preprint PDF DOI

Good practice guide on the graphene-based AC-QHE realization of the farad

Luca Callegaro, Stephan Bauer, Blaise Jeanneret, Mattias Kruskopf, Martina Marzano, Massimo Ortolano, Frederic Overney ยท 2022

This Good Practice Guide provides information for the realization of the farad from the quantum Hall resistance in graphene devices by using digital impedance bridges. The fabrication and characterizaโ€ฆ

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Physics Preprint PDF DOI

Theoretical analysis of the saturation phase of the $1/1$ energetic-ion-driven resistive interchange mode

J. Varela, D. A. Spong, L. Garcia, S. Ohdachi, K. Y. Watanabe, R. Seki, Y. Ghai ยท 2022

The aim of the present study is to analyze the saturation regime of the energetic-ion-driven resistive interchange mode (EIC) in the LHD plasma. A set of non linear simulations are performed by the FAโ€ฆ

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