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Preprint ARTICLE | doi:10.20944/preprints202402.1031.v1

Characterization of Orbital Angular Momentum Beams by Polar Mapping and Fourier Transform

Ruediger Grunwald, Martin Bock

Subject: Physical Sciences, Optics And Photonics Keywords: Orbital momentum; polar mapping; Fast Fourier Transform; vortex beams; singular optics; structured light; beam characterization; mode sorting; topological charge; spiral recognition

Online: 19 February 2024 (10:23:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.0206.v1

Generation of Propagation-Dependent OAM Self-Torque with Chirped Spiral Gratings

Ruediger Grunwald, Mathias Jurke, Max Liebmann, Alexander Treffer, Martin Bock

Subject: Physical Sciences, Optics And Photonics Keywords: orbital angular momentum; vortex beams; singular optics; spectral anomalies; Gouy effect; spiral gratings; chirped gratings; spatial light modulator; angular velocity; self-torque

Online: 6 May 2024 (07:35:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1099.v1

Ultrahigh Nonlinear Optical Absorption in 2D MXene Films

David Moss

Subject: Physical Sciences, Optics And Photonics Keywords: 2D materials; nonlinear optics; MXene; Z-scan technique

Online: 15 August 2023 (07:11:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0656.v1

Nonlinear Optical Absorption of Impurities in Hexagonal Quantum Wires: Electric and Magnetic Field Effects

Anna Sofía Giraldo-Neira, Tomas Sosa-Giraldo, Juan Alejandro Vinascos-Sánchez, Álvaro Luis Morales Aramburo, Carlos Alberto Duque Echeverri, Miguel Eduardo Mora-Ramos, Ricardo León Restrepo Arango

Subject: Physical Sciences, Condensed Matter Physics Keywords: intraband energy transitions; optical absorption coefficients; hexagonal quantum well wires; GaAs/AlGaAs; core/shell structure

Online: 8 August 2023 (11:20:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0890.v1

Investigation of Broadband Optical Nonlinear Absorption and Transient Dynamics in Orange IV Containing Azobenzene

Quanhua Wu, Rui Ruan, Xingxing Li, Yujie Zhao, Yang Li, Yu Fang, Yongqiang Chen, Quanying Wu, Yinglin Song, Xingzhi Wu

Subject: Physical Sciences, Optics And Photonics Keywords: Nonlinear optics; Z-scan; Transient absorption and refraction; Pump probe

Online: 25 April 2023 (05:40:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201702.0108.v1

Chiral Optical Tamm States: Temporal Coupled-Mode Theory

Ivan V. Timofeev, Pavel S. Pankin, Stepan Ya. Vetrov, Vasily G. Arkhipkin, Wei Lee, Victor Ya. Zyryanov

Subject: Physical Sciences, Optics And Photonics Keywords: optical Tamm state; cholesteric liquid crystal; handedness-preserving mirror

Online: 28 February 2017 (13:51:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints201702.0106.v1

A Robust Diffusion Estimation Algorithm with Self-adjusting Step-size in WSNs

Feng Chen, Qing Ye, Xiaodan Shao, Shukai Duan

Subject: Computer Science And Mathematics, Computer Science Keywords: robust diffusion estimation; self-adjusting step-size; non-Gaussian noise; wireless sensor networks

Online: 28 February 2017 (12:38:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.0725.v1

A Novel Nano-Laminated GdB2C2 with Excellent Electromagnetic Wave Absorption Performance and Ultra-High Temperature Thermostability

Longfei Jiang, Gang Qin, Pengxing Cui, Guoqing Wang, Xiaobing Zhou

Subject: Chemistry And Materials Science, Ceramics And Composites Keywords: GdB2C2; ternary layered materials; electromagnetic wave absorption; ultra-high temperature ceramic

Online: 13 May 2024 (09:10:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.0914.v1

Tuning of PID Controllers using Reinforcement Learning for Nonlinear Systems Control

Gheorghe Bujgoi, Dorin Sendrescu

Subject: Engineering, Control And Systems Engineering Keywords: learning-based control; nonlinear systems control; PID controller; bioprocess

Online: 15 March 2024 (12:12:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202409.0410.v1

Enhancing Force Absorption, Stress-Strain and Thermal Properties of Weft-Knitted Inlay Spacer Fabric Structures for Apparel Applications

Mei-ying Kwan, Yi-fan Tu, Kit-lun Yick, Joanne Yip, Nga-wun Li, Annie Yu, Ka-wai Lo

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: Cushioning material; Compression evaluation; Inlay knitting; Stretchability

Online: 6 September 2024 (03:49:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0566.v1

Facile Fabrication of Co–Doped Porous Carbon from Coal Hydrogasification Semi-Coke for Efficient Microwave Absorption

Yan-Fang Li, Li-Fang Wang, Shu-juan Gao, Tan-Lai Yu, Qi-Feng Li, Junwei Wang

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Co/C composites; microwave absorption; dielectric loss; magnetic loss

Online: 9 September 2024 (07:07:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201609.0112.v1

Influence of External Magnetic Field on the Microwave Absorption Properties of Carbonyl Iron and Polychloroprene Composites Film

Haiyan Wang, Xueai Li

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: carbonyl iron; composites film; external magnetic field; microwave absorption properties

Online: 28 September 2016 (10:32:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201702.0011.v1

Simulation Analysis of Solution Transportation Absorption Chiller with the Capacity from 25 RT to 1000 RT

Koji Enoki, Fumi Watanabe, Seigo Tanaka, Atsushi Akiwawa, Toshitaka Takei

Subject: Engineering, Energy And Fuel Technology Keywords: absorption chiller; thermal energy transportation; solution transportation; ammonia-water; COP; simulation

Online: 4 February 2017 (07:49:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.0763.v1

The Nonlinear and Threshold Effect of Built Environment on Ride-Hailing Travel Demand

Jiexiang Yin, Feiyan Zhao, Wenyun Tang, Jianxiao Ma

Subject: Engineering, Transportation Science And Technology Keywords: ride-hailing; built environment; XGBoost; SHAP; nonlinearity

Online: 11 April 2024 (14:10:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1521.v1

Exploring the Microstructural Effect of FeCo Alloy on Carbon Microsphere Deposition and Enhanced Electromagnetic Wave Absorption

Xiaoshu Jia, Heng Zhang, Fang Liu, Qiaojun Yi, Chaolong Li, Xiao Wang, Mingxing Piao

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: FeCo@CM composites; laminar-stacked FeCo alloy; MPARCVD technique; electromagnetic wave absorption

Online: 21 June 2024 (16:58:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.0016.v1

RBF Neural Networks-Based Near-Optimal Tracking Control of Partially Unknown Discrete-Time Nonlinear Systems

Huang Jiashun, Xu Dengguo, Li Yahui, Ma Yan

Subject: Computer Science And Mathematics, Mathematics Keywords: adaptive dynamic programming; optimal tracking control; RBF neural network; nonlinear systems

Online: 1 March 2024 (13:12:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202408.0709.v1

Investigation of the Energy Dissipation Characteristics of a Nonlinear Suspension System

Uchenna Diala, Yunpeng Zhu, Rajintha Gunawardena

Subject: Engineering, Mechanical Engineering Keywords: vibration isolation system; nonlinear suspension system; OFRF; nonlinear systems; energy dissipation; nonlinear damping

Online: 9 August 2024 (13:17:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0323.v1

Environmental Impact Evaluation of CO₂ Absorption and Desorption Enhancement by Membrane Gas Absorption: A life Cycle Assessment Study

Fuzhao Li, Yuexia Lv, Jinpeng Bi, Hui Zhang, Wei Zhao, Yancai Su, Tingting Du, Junkun Mu

Subject: Environmental And Earth Sciences, Environmental Science Keywords: CO₂ capture; membrane gas absorption; life cycle assessment; environmental impact

Online: 7 May 2024 (16:40:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.2109.v1

From Localized Laser Energy Absorption to Absorption Delocalization at Volumetric Glass Modification with Gaussian and Doughnut-Shaped Pulses

Martin Zukerstein, Vladimir P. Zhukov, Yuri P. Meshcheryakov, Nadezhda M. Bulgakova

Subject: Physical Sciences, Optics And Photonics Keywords: volumetric modification; femtosecond laser pulses; laser processing; fused silica; Maxwell’s equations; thermoelastoplastic modeling; laser-induced shock waves

Online: 30 June 2023 (07:50:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0074.v1

Series Solution and Its Extension for the Nonlinear Flow Response of Soft Hair Beds

Bo Hua Sun, Bo Pang, Meng Li

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: soft hair beds; Stokes flow; series solution; perturbation solution

Online: 6 August 2024 (03:11:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0281.v1

Recovered Foam Impact Absorption Systems

Sara Marcelino-Sádaba, Pablo Benito Hernandez, Miguel Angel Martin Antunes, Pedro Maria Villanueva Roldan, Fernando Veiga

Subject: Engineering, Mechanical Engineering Keywords: foam; impact absorption; recycling; sustainability

Online: 3 September 2024 (16:55:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0315.v1

Numerical Simulation Of Nonlinear Advection-Diffusion-Fractional Equation of Pollutants in Porous Media

Calvia Madie Yonti, Fulbert Togue Kamga

Subject: Environmental And Earth Sciences, Pollution Keywords: groundwater; fractional-advection-dispersion; contaminant; non-linear absorption

Online: 7 May 2024 (03:15:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1870.v1

Mathieu-Hill Equation Stability Analysis for Trapped Ions. Anharmonic Corrections for Nonlinear Electrodynamic Traps

Bogdan M. Mihalcea

Subject: Physical Sciences, Quantum Science And Technology Keywords: Mathieu-Hill equation; Floquet theory; Sturm-Liouville problem; perturbation method; Paul trap; stability diagram

Online: 29 May 2024 (02:17:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0302.v1

Extending the Fixed-Effects Model on Nonlinear Least Squares

Haitao Duan, Muquan Zou, Jiankun Yang, Vanha Tran

Subject: Business, Economics And Management, Econometrics And Statistics Keywords: panel data analysis; fixed-effects; time-effects; curve_fit; nonlinear squares; function distance

Online: 3 July 2024 (09:45:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1003.v1

Enhanced Energy Absorption in Bioinspired Combined TPMS-Gyroid and Walled TPMS-Gyroid Lattice Structure Manufactured via Fused Filament Fabrication (FFF)

Dawit Bogale Alemayehu, Masahiro Todoh

Subject: Engineering, Mechanical Engineering Keywords: Keywords; bio-inspired; gyroid lattice, Boolean subtraction; finite element analysis; plastic plateau; densification; energy absorption; relative density; size effect

Online: 18 March 2024 (10:39:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints201702.0057.v2

Global Existence, Asymptotic Behavior and Blow-up of Solutions for a Suspension Bridge Equation with Nonlinear Damping and Source Terms

Wenjun Liu, Hefeng Zhuang

Subject: Computer Science And Mathematics, Analysis Keywords: suspension bridges; fourth order wave equation; nonlinear damping; source term; existence; blow up

Online: 24 February 2017 (09:06:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0793.v1

Dynamics of Absorption and Concentration of Anthracene in Radishes

Haruki Shimazu

Subject: Environmental And Earth Sciences, Environmental Science Keywords: anthracene; radish; absorption; concentration

Online: 12 January 2024 (06:12:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.0253.v1

Disturbance Propagation Model of Luggage Drifting Motion Based on Nonlinear Pressure in Typical Passenger Corridors of Transportation Hubs

Bingyu Wei, Rongyong Zhao, Cuiling Li, Miyuan Li, Yulong Ma, Eric S. W. Wong

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: Luggage-laden passenger; passenger-luggage flow; disturbance propagation dynamics; luggage drifting disturbance

Online: 3 April 2024 (16:37:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0423.v1

Flight Control Design Based on Nonlinear Dynamic Inversion for Post-Stall Maneuvers

Ciann-Dong Yang, Shun-Yuan Chang

Subject: Engineering, Aerospace Engineering Keywords: nonlinear dynamic inversion; control allocation; thrust vectoring control; high angle-of- attack flight; post-stall maneuver

Online: 7 August 2024 (03:37:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.2187.v1

Third-Order Nonlinear Semi-Canonical Functional Differential Equations: Oscillation via New Canonical Transform

E. Chandrasekaran, George Chatzarakis, R. Sakthivel, E. Thandapani

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: third-order; semi canonical; functional difference equation; oscillation

Online: 29 August 2024 (15:20:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.0145.v2

Dynamic Event-Triggered Control for Delayed Nonlinear Markov Jump Systems under Randomly Occurring DoS Attack and Packet Loss

Haiyang Zhang, Huizhen Chen, Lianglin Xiong, Yi Zhang

Subject: Engineering, Control And Systems Engineering Keywords: Delayed nonlinear Markov jump systems; attack success rate; Packet loss rate; Dynamic Event-triggered Mechanism; Exponential stability and stabilization

Online: 6 March 2024 (10:57:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202308.1352.v1

Oral Iron Absorption of Ferric Citrate Hydrate and Hepcidin-25 in Hemodialysis Patients: A Prospective, Multicenter, Observational Riona-Oral Iron Absorption Trial

Naohisa Tomosugi, Yoshitaka Koshino, Chie Ogawa, Kunimi Maeda, Noriaki Shimada, Kimio Tomita, Shoichiro Daimon, Tsutomu Shikano, Kazuyuki Ryu, Toru Takatani, Kazuya Sakamoto, Satonori Ueyama, Daisuke Nagasaku, Masato Nakamura, Shibun Ra, Masataka Nishimura, Chieko Takagi, Yoji Ishii, Noritoshi Kudo, Shinsuke Takechi, Takashi Ishizu, Takamoto Yanagawa, Masamichi Fukuda, Yutaka Nitta, Takayuki Yamaoka, Taku Saito, Suzuko Imayoshi, Momoyo Omata, Joji Oshima, Akira Onozaki, Hiroaki Ichihashi, Yasuhisa Matsushima, Hisahito Takae, Ryoichi Nakazawa, Koichi Ikeda, Masato Tsuboi, Keiko Konishi, Shouzaburo Kato, Maki Ooura, Masaki Koyama, Tsukasa Naganuma, Makoto Ogi, Shigeyuki Katayama, Toshiaki Okumura, Shigemi Kameda, Sayuri Shirai

Subject: Medicine And Pharmacology, Urology And Nephrology Keywords: oral iron absorption; ferric citrate hydrate; hemodialysis; hepcidin-25; iron shift

Online: 18 August 2023 (11:20:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.2180.v1

Nonlinear Finite Element Analysis of Bone-Implant Contact in Three Short Dental Implant Models with Varying Osseointegration Percentages

Dawit Bogale Alemayehu, Masahiro Todoh, Song-Jeng Huang

Subject: Engineering, Mechanical Engineering Keywords: Biomechanical; Osseo-integration; Low-density; High-density; Cancellous bone; Short dental implant; Finite element analysis; bone-implant contact

Online: 29 August 2024 (14:26:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0227.v1

Nonlinear Pauli Equation

Sergey Rashkovskiy

Subject: Physical Sciences, Particle And Field Physics Keywords: classical field theory; unified Maxwell-Pauli theory; non-linear Pauli equation; non-linear Schrödinger equation; spin behavior in a magnetic fiel

Online: 17 October 2022 (04:52:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.0765.v1

Dynamic of Quantum Correlation in Qubit-Qutrit States (Perpendicular Direction) under Multilocal and Global Dephasing: Classical Noises Effect

Polislin Fabrice Wonang, Arthur Tsamouo Tsokeng, Odette Melachio Tiokang, Georges Collince Fouokeng, Aurélien Kenfack-jiotsa, Martin Tchoffo

Subject: Physical Sciences, Quantum Science And Technology Keywords: hybrid system; quantum correlation; qubit; qutrit; classical noise

Online: 13 March 2024 (07:18:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints202409.0585.v1

A Novel Approach to Compute Discrete Nonlinear Single Unit Activity Features

Nikita Zakharov, Elena Belova, Anna Gamaleya, Alexey Tomskiy, Alexey Sedov

Subject: Biology And Life Sciences, Neuroscience And Neurology Keywords: Entropy; mutual information; single unit activity; basal ganglia; subthalamic nucleus; Parkinson’ s disease

Online: 9 September 2024 (09:04:35 CEST)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints201611.0098.v1

Nonlinear Vibration Response of a Rectangular Tube with a Flexible End and Non-Rigid Acoustic Boundaries

Y. Y. Lee

Subject: Engineering, Mechanical Engineering Keywords: nonlinear plate vibration; structural acoustics; harmonic balance method

Online: 18 November 2016 (10:13:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202007.0005.v3

Cosmology with Variable G and Nonlinear Electrodynamics

Gabriel W. Joseph, Ali Övgün

Subject: Physical Sciences, Acoustics Keywords: Cosmology; nonlinear electrodynamics; inflation; acceleration of the universe; causality; classical stability; variable $G$

Online: 14 April 2021 (14:07:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0141.v2

Nonlinear Approximations to Critical and Relaxation Processes

Simon Gluzman

Subject: Physical Sciences, Mathematical Physics Keywords: nonlinearity; approximants; critical phenomena; permeability; relaxation phenomena; time series; crashes

Online: 11 September 2020 (08:44:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.1405.v1

Enhancements of Wave Power Absorption with Arrays and a Vertical Breakwater

Fuat Kara

Subject: Engineering, Energy And Fuel Technology Keywords: mean interaction factor; absorbed wave power; multibody interaction; WECs arrays; method of images

Online: 18 January 2024 (13:55:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.1699.v1

Broadband Waterborne Multiphase Metasurface with Simultaneous Wavefront Manipulation and Energy Absorption

An Yi, Han Zou, Aiguo Zhao

Subject: Engineering, Marine Engineering Keywords: metamaterials; pentamode materials; acoustic metasurface; dispersion curve

Online: 25 June 2023 (02:30:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0217.v1

Analysis of Heat Absorption and Collection Based on Solid Structures Collector

Yan Liu, Wenbin Liu, Qing Gao, Yong Huang, Peizhuo Li, Yongzhen Wang

Subject: Engineering, Automotive Engineering Keywords: solar collection; solid structure; heat absorption analysis; collection heat analysis; reflection spectrum

Online: 8 June 2021 (12:06:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.2037.v1

A Nonlinear Population Model

Dragos-Patru Covei, Traian A. Pirvu, Catalin Sterbeti

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: Population dynamics; Equilibrium density function

Online: 27 December 2023 (10:09:11 CET)

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Preprint REVIEW | doi:10.20944/preprints202001.0079.v1

Review of Absorption Oil Content in Water Injection

Aditya Nugraha Ernawan, Alfi Fachrizal, Angga Wijaya, Bima Syahreza, Muhammad Ridwan Alkhandi, Mayang Firdaus, Mulyono Dyatmahendri, Rizka Ananda, Wily Rustam, Muhammad Khoirul Afdhol, Tomi Erfando

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: absorption; oil content; water injection; treatment

Online: 9 January 2020 (09:44:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.1507.v1

Absorption and Distribution of Imidacloprid and Its Metabolites in goldfish(Carassius Auratus Linnaeus)

Wanghui Xu, Lulu Zhang, Jiayin Hou, Xiaohua Du, Liezhong Chen

Subject: Biology And Life Sciences, Toxicology Keywords: Imidacloprid; Goldfish; Metabolites; Tissue Distribution; Toxicity

Online: 21 June 2023 (08:57:58 CEST)

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Imidacloprid is the first-generation neonicotinoid insecticide. But, the long-term use of im-idacloprid as a pesticide has caused severe water pollution. Recently, the toxicity of imidacloprid to aquatic organisms has received increasing attention. This study aimed to investigate the ab-sorption and distribution of imidacloprid in various tissues (gills, intestine, liver, muscle, brain, and gonads) of goldfish through short-term and continuous exposure tests for 28 days. The re-sults of short-term exposure indicated that the concentration of imidacloprid and its metabolites in tissues at the transfer stage decreased steadily after 1 day of 40 mg/l imidacloprid water treatment and was below the detection limit after 3 days. Continuous exposure for 28 days at various treatment concentrations showed that the concentrations of imidacloprid and its metab-olites differed significantly among the different tissues of the goldfish. In the 20 mg/l treatment group (S1), the highest concentration of imidacloprid was found in the liver (12.04 μg /gtissue), followed by the intestine (9.91 μg /gtissue), muscle (6.20 μg /gtissue), gill (6.11 μg /gtissue), gonads (5.22 μg /gtissue), and brain (2.87 μg /gtissue). In the 40 mg/l treatment group (S2), the order of tissue concentrations was similar to that of the S1 group, with the highest concentration observed in the liver (12.04 μg/gtissue), followed by the intestine (9.91 μg/gtissue), muscle (6.20 μg/gtissue), gill (6.11 μg/gtissue), gonads (5.22 μg/gtissue), and brain (2.87 μg/gtissue). Fur-thermore, the study detected 5-hydroxyimidacloprid, imidacloprid urea, and 6-chloronicotinic acid in imidacloprid metabolites in all tissues, while imidacloprid was detected only in the intes-tine and liver. Overall, the results of this study contribute to a better understanding of the met-abolic behavior of imidacloprid in organisms and provide new data to support the assessment of imidacloprid toxicity in fish.

Preprint ARTICLE | doi:10.20944/preprints202405.0635.v1

Optimal Harvesting Strategies for Timber and Non-timber Forest Products with Nonlinear Harvesting Term

Yaning Zhang, Lina Hao, Shan Zhang

Subject: Computer Science And Mathematics, Mathematics Keywords: biomathematics model; nonlinear harvest; optimal control; non-timber forest products; sustainable timber harvest

Online: 10 May 2024 (11:31:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0494.v1

Moisture Absorption Characteristics and Subsequent Mechanical Properties Loss of Enset-PLA Composites

Abebayehu Abdela Gelgelu, Maxim Vandaele, Sam Haenen, Bart Buffel, Frederik Desplentere, Belete Sirahbizu

Subject: Chemistry And Materials Science, Ceramics And Composites Keywords: hydrophilic; PLA; plasticize; ﬁber concentration

Online: 7 August 2023 (10:07:03 CEST)

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Preprint REVIEW | doi:10.20944/preprints202306.1136.v1

Research Status and Future Perspectives of Low Dimensional Electromagnetic Wave Absorption Materials

Huaping Xu, Tao Tang, Zengming Man, Xiaofeng Wu, Haiqiang Zhao, Xiaohui Liang, Chuanying Li

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: electromagnetic wave absorption; attenuation mechanism; low-dimensional materials

Online: 15 June 2023 (12:00:25 CEST)

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Preprint REVIEW | doi:10.20944/preprints202012.0250.v1

Intestinal Absorption of β-Glucans and Their Effect on the Immune System

Shingo Hino, Naomichi Nishimura, Tsukasa Matsuda, Tatsuya Morita

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: β-glucan; intestinal absorption; immune system

Online: 10 December 2020 (11:30:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0290.v1

Ablation-Dominated Arcs in CO² Atmosphere - Part II: Molecule Emission and Absorption

Ralf Methling, Nicolas Götte, Dirk Uhrlandt

Subject: Engineering, Electrical And Electronic Engineering Keywords: circuit breaker; switching arc; optical emission spectroscopy; optical absorption spectroscopy; current zero; SF6 alternative gases; CO2; PTFE; Swan bands; CuF

Online: 13 August 2020 (06:00:47 CEST)

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Working Paper ARTICLE

Features of Structure and Absorption in the Jet-launching Region of M87

Wei Zhao, Xiaoyu Hong, Tao An, Xiaofeng Li, Xiaopeng Cheng, Fang Wu

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galaxies: individual (m87); galaxies: jets; galaxies: active; radio continuum: galaxies

Online: 1 October 2019 (16:01:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0289.v2

Numerical Analysis of SO₂ Absorption inside a Wet Scrubber

Amedeo Amoresano, Giuseppe Langella, Paolo Iodice, Silvia Roscioli

Subject: Engineering, Mechanical Engineering Keywords: Seawater scrubber; SOX; Absorption

Online: 29 April 2023 (02:47:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0445.v1

Phase Correction for Absorption Mode Two-dimensional Mass Spectrometry

Marc-André Delsuc, Kathrin Breuker, Maria A. van Agthoven

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: mass spectrometry; two-dimensional; tandem mass spectrometry; phase correction; absorption mode; data processing

Online: 16 April 2021 (12:41:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0028.v1

Hydrogen Sensor Based on Tunable Diode Laser Absorption Spectroscopy

Viacheslav Avetisov, Ove Bjoroey, Junyang Wang, Peter Geiser, Ketil Gorm Paulsen

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: gas sensor; hydrogen sensor; diode laser; TDLAS; WMS; absorption spectroscopy; laser spectroscopy; hydrogen

Online: 3 November 2019 (18:21:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.2224.v1

Nonlinear Maccone-Pati Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: ; Uncertainty Principle, Lebesgue space, Clarkson inequality, Parallelogram space, Type of Banach space.

Online: 31 January 2024 (12:28:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0525.v3

Nonlinear Generalisation of Quantum Mechanics

Alireza Jamali

Subject: Physical Sciences, Particle And Field Physics Keywords: quantum mechanics; foundations of quantum mechanics; nonlinear equation; nonlinear quantum mechanics; nonlinear schrödinger equation

Online: 1 July 2022 (10:49:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201610.0120.v1

Continuation Methods for Nonlinear Flutter

Edward E. Meyer

Subject: Engineering, Control And Systems Engineering Keywords: aeroelasticity; multiple nonlinearity flutter; continuation methods; describing functions; bifurcation; continuation optimization; controlling LCO amplitudes

Online: 27 October 2016 (11:58:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1380.v1

Nonlinear Responses of COVID-19 Incidence Rates to Temperature, Relative Humidity, Ultraviolet Radiation, and Diurnal Temperature Range

Hao Zhang, Jian Wang, Zhong Liang

Subject: Environmental And Earth Sciences, Environmental Science Keywords: COVID-19; meteorological factors; distributed lag nonlinear model (DLNM); global; Nonlinear Response

Online: 18 September 2024 (09:34:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201607.0062.v1

Nonlinear growth effect of remittances in recipient countries: an econometric analysis of remittances-growth nexus in Bangladesh

Gazi Mainul Hassan, Shamim Shakur

Subject: Business, Economics And Management, Economics Keywords: Remittances; Economic Growth; Bangladesh; Remittances Utilisation

Online: 20 July 2016 (10:27:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.0376.v1

Absorption and Biotransformation of Selenomethionine and Selenomethionine-oxide by Wheat Seedlings (Triticum aestivum L.)

Qi Wang, Siyu Huang, Qingqing Huang, Yao Yu, Huafen Li, Yanan Wan

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: wheat; selenomethionine; selenomethionine-oxide; uptake; Se speciation; interaction

Online: 6 December 2023 (10:39:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201609.0060.v1

Imperfection Sensitivity of Nonlinear Vibration of Curved Single-Walled Carbon Nanotubes Based on Nonlocal Timoshenko Beam Theory

Iman Eshraghi, Seyed K. Jalali, Nicola Maria Pugno

Subject: Engineering, Mechanical Engineering Keywords: nonlinear vibration; imperfection; curved SWCNT; nonlocal theory; differential quadrature method (DQ)

Online: 18 September 2016 (10:14:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202001.0049.v1

Dyonic and Magnetic Black Holes with Rational Nonlinear Electrodynamics

Sergey Kruglov

Subject: Physical Sciences, Mathematical Physics Keywords: nonlinear electrodynamics; black holes; heat capacity; free energy; phase transitions

Online: 5 January 2020 (17:27:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.0051.v1

GPU-Based Acceleration of Metaphor-less Algorithms and Their Application for Solving Large Systems of Nonlinear Equations

Bruno Silva, Luiz Guerreiro Lopes

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: metaheuristic optimization; Jaya algorithm; Jaya variants; Rao algorithms; BWP algorithm; MaGI algorithm; parallel GPU algorithms; nonlinear equation systems

Online: 1 May 2024 (09:47:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0454.v1

A Study on Shock Absorption Characteristics of Honeycomb-inserted Bollards

Sangwon Seon, Kyoungwok Kim, Cheonho Bae, Won Yi

Subject: Engineering, Mechanical Engineering Keywords: bollard; honeycomb; Polylactic acid (PLA); LS-DYNA; shock-absorption; in-plane

Online: 31 March 2020 (10:14:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0876.v1

Two-Step Fifth-Order Efficient Jacobian-Free Iterative Method for Solving Nonlinear Systems

Alicia Cordero, Javier G. Maimó, Antmel Rodríguez-Cabral, And Juan R. Torregrosa

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: Nonlinear systems; Iterative processes; Convergence order; Efficiency

Online: 11 September 2024 (14:14:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201701.0110.v1

Multi-Step Preconditioned Newton Methods for Solving Systems of Nonlinear Equations

Fayyaz Ahmad, Malik Zaka Ullah, Ali Saleh Alshomrani, Shamshad Ahmad, Aisha M. Alqahtani, L. Alzaben

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: systems of nonlinear equations; nonlinear preconditioners; multi-step iterative methods; Frozen Jacobian

Online: 25 January 2017 (04:13:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202409.0149.v1

Modelling Living Processes with Nonlinear Dynamics

Yehuda Roth Roth

Subject: Biology And Life Sciences, Life Sciences Keywords: Nonlinear map; Living Process; Life Curve

Online: 4 September 2024 (12:01:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0468.v2

Inflation of Universe by nonlinear electrodynamics

Sergey Kruglov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Universe inflation; Einstein's gravity; nonlinear electrodynamics; e-folding number; classical stability; causality

Online: 19 February 2024 (14:51:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0342.v1

Nonlinear Heisenberg-Robertson-Schrodinger Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Lipschitz map; Banach space

Online: 6 February 2024 (09:28:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202202.0006.v1

A Nonlinear Radio-photon Conversion Device

Irina L. Vinogradova, Azat R. Gizatulin, Ivan K. Meshkov, Anton V. Bourdine, Manish Tiwari

Subject: Engineering, Electrical And Electronic Engineering Keywords: radio photonics; radio-over-fiber; orbital angular momentum; quadratic-nonlinear structure; difference frequency generation

Online: 1 February 2022 (12:02:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints202107.0371.v1

Nonlinear Elastic Deformation of Mindlin Torus

Bohua Sun

Subject: Physical Sciences, Acoustics Keywords: circular torus; nonlinear deformation; shear deformation; Mindlin; Gauss curvature; Maple

Online: 16 July 2021 (12:47:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0343.v1

Towards Heralded Two-Photon Absorption and Two-Photon Excited Fluorescence for Quantum Microscopy and Spectroscopy

Andreas Jechow

Subject: Physical Sciences, Optics And Photonics Keywords: multi-photon processes; quantum optics; photon statistics; fluorescence

Online: 24 February 2020 (02:57:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1547.v1

Electrical Conductivity, EMI Absorption Shielding Performance, Curing Process and Mechanical Properties of Rubber Composites

Ján Kruželák, Andrea Kvasničáková, Michaela Džuganová, Rastislav Dosoudil, Ivan Hudec, Henrich Krump

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: rubber; manganese-zinc ferrite; nickel-zinc ferrite; carbon black; carbon fibers; electromagnetic absorption shielding

Online: 22 January 2024 (04:29:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202302.0229.v1

Branching Random Walks with One Particle Generation Center and Possible Absorption at Every Point

Elena Filichkina, Elena Yarovaya

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: branching random walks; moments of particle numbers; evolution operator; Green’s function

Online: 14 February 2023 (03:29:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0002.v1

Performance Study of Absorption Tower and Adsorption Reactor to Eliminate Ammonia Gas as Pollutant

Ikha Rasti Julia Sari, Januar Arif Fatkhurrahman, Yose Andriani

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: ammonia; emission control; saturation point; absorption tower; adsorption reactor

Online: 1 December 2021 (10:22:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202308.1021.v1

Li Cheng, Wen-Xiu Ma

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: integrable equations; Lax pairs; symmetry; Hamiltonian structure; zero curvature equations

Online: 15 August 2023 (03:38:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1133.v1

Upper Bound Limit Analysis of Deep Tunnel Face Support Pressure with Nonlinear Failure Criterion under Pore Water Conditions

Zihan Yang, Yongxin Li, Jingshu Xu

Subject: Engineering, Civil Engineering Keywords: ; deep tunnel face; pore water pressure; nonlinear failure criterion; upper bound theorem; failure mechanism; numerical simulation ;

Online: 15 July 2024 (07:51:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1876.v1

Application of Successful EU Funds Absorption Models on Sustainable Regional Development

Marko Šostar, Vladimir Ristanović, Chamaru de Alwis

Subject: Business, Economics And Management, Business And Management Keywords: Sustainable regional development; EU funds; Development projects; Absorption

Online: 28 June 2023 (04:04:18 CEST)

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The research paper comprehensively and consistently addresses all relevant theoretical areas related to the topic and includes an extensive empirical analysis of the absorption of EU funds and their impact on the sustainable development of Croatia, Slovenia, Hungary, and Poland. The analysis aims to investigate the efficiency of the absorption of funds from the EU, the impact of these funds on regional development of countries, as well as the reasons for such impacts. The "Regional Development Model Based on EU Funds" was tested with the aim of applying the model to the Republic of Croatia, countries in the region, and other European countries to achieve a higher level of absorption of financial resources from the available EU funds. Data for the empirical analysis were collected using a highly structured survey questionnaire on a sample of 244 respondents involved in the preparation and implementation of EU-funded projects. The contribution of economic science in theoretical terms arises from the development of scientific knowledge and ideas about the importance of increasing the number of development projects that will increase the absorption of funds from the European Union, thereby increasing economic activities in Croatia and the region. The expected contribution of economic science in the applied sense is based on the formulation of the "Regional Development Model Based on EU Funds," which is based on the application of knowledge, good practices, and stakeholder experiences, considering relevant indicators from available sources. The greatest contribution is demonstrated through testing the "Regional Development Model Based on EU Funds," which is applicable to the Republic of Croatia, countries in the region, and other European countries over a longer period. Finally, research of the impact of EU funds on the regional development of recipient countries is considerably less represented and very modest, only in the "upswing" of systematic scientific research. The research aims to fill the gaps in research and encourage thinking of key stakeholders responsible for regional development, who should eventually realize the importance of defining a regional policy aimed at EU funds as a key to regional development and reducing regional disparities within countries.

Preprint ARTICLE | doi:10.20944/preprints202306.0095.v1

Lightweight Co₃O₄/CC Composites with High Microwave Absorption at Low Frequency

Bing An, Mei Wu, Xinhuang Yang, Zengming Man, Xiaohui Liang, Chunyang Feng

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Low frequency; Co3O4/CC; Co-MOFs/CC; thinner thickness

Online: 1 June 2023 (13:35:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.0272.v1

Almost Automorphic Solutions to Nonlinear Difference Equations

Marko Kostić, Halis Can Koyuncuoglu, Vladimir E. Fedorov

Subject: Computer Science And Mathematics, Analysis Keywords: discrete almost automorphic; discrete bi-almost automorphic; fixed point; contraction; Bohr-Neugebauer

Online: 6 November 2023 (03:08:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1178.v1

Metamaterial Labyrinth Wall Low-Frequency Sound Absorption Measurements for Restaurant Room Acoustics and Decorative Applications

Rolf Bader, Johannes Mischo, Stefanie Gernert, Hendrik Mischo

Subject: Physical Sciences, Acoustics Keywords: Room Acoustics, Acoustic Metamaterials, Restaurant Acoustics

Online: 20 March 2024 (09:11:45 CET)

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Preprint REVIEW | doi:10.20944/preprints202308.0298.v2

Absorption of Light in Vertical III-V Semiconductor Nanowires for Solar Cell and Photodetector Applications

Nicklas Anttu

Subject: Physical Sciences, Applied Physics Keywords: III-V semiconductor; nanowire; absorption; solar cell; photodetector

Online: 17 August 2023 (07:53:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0382.v1

The Characteristic of CFRP Laminates Related to Water Absorption Subjected to Tensile, Bending, and Compression

Sudarisman Sudarisman, Alfian Hidayat, Haniel Haniel, Muhammad Tiopan, Rela Adi Himarosa, Muhammad Akhsin Muflikhun

Subject: Engineering, Mechanical Engineering Keywords: CFRP; vacuum infusion; water absorption; tensile test; bending test; compressive test

Online: 29 March 2022 (12:22:53 CEST)

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Preprint DATA DESCRIPTOR | doi:10.20944/preprints202202.0305.v1

Theoretical Calculations and Analysis Method of the Physicochemical Properties of Phytochemicals to Predict Gastrointestinal Absorption

Luis A. Vélez, Yamixa Delgado, Yancy Ferrer-Acosta, Ivette J. Suárez-Arroyo, Priscilla Rodríguez, Daraishka Pérez

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Physicochemical properties; Gastrointestinal absorption; Lipinski's rules; Veber's rules; Ghose's rules; Muegge's rules

Online: 24 February 2022 (08:35:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0390.v1

Connection between Sinc Approximation for High-Energy Absorption Cross Section and Shadow of Black Holes

Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Gravitation; Black hole; Shadow; High-energy physics; Cross-section; Null geodesics

Online: 18 August 2021 (14:31:11 CEST)

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Working Paper REVIEW

Iron and Zinc Interactions: Does Entero-Pancreatic-Zinc Excretion Cross-Talk with Intestinal Iron Absorption?

Kondaiah Palsa, Puneeta Singh Yaduvanshi, Paul Sharp, Raghu Pullakhandam

Subject: Biology And Life Sciences, Food Science And Technology Keywords: Iron, Zinc, Interactions, DMT1, ZIP4, Pancreas, Metabolism, Homeostasis, Intestine, Caco-2 cells

Online: 9 July 2019 (14:32:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0265.v1

Nonlinear Dependence and Spillovers between Currency Markets and Global Financial Market Variables

Zhuhua Jiang, Jose Arreola Hernandez, Ron P. McIver, Seong-Min Yoon

Subject: Business, Economics And Management, Finance Keywords: currency market; commodity market; stock market; risk factors; nonlinear de-pendence; spillover network

Online: 20 May 2022 (02:27:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0493.v1

Propagation and Transformation of Vortexes in Linear and Nonlinear Radio-photon Systems

Valery H. Bagmanov, Albert Kh. Sultanov, Ivan K. Meshkov, Azat R. Gizatulin, Raoul R. Nigmatullin, Airat Zh. Sakhabutdinov

Subject: Physical Sciences, Optics And Photonics Keywords: vortex propagation; difference frequency generation; nonlinear medium; vortex beams conversion

Online: 29 September 2021 (11:45:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1942.v1

Linear and Nonlinear Modes & Data Signatures in Dynamic Systems Biology Models

Joseph DiStefano

Subject: Engineering, Bioengineering Keywords: exponential modes; visible modes, hidden modes; data limitations; input-output data; mechanistic model; model distinguishability; invariant 2-dimensional manifolds

Online: 28 July 2023 (13:12:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0736.v1

Low-Cost Denoising and Deblurring Using a Novel Nonlinear Diffusion Technique

Daniele Funaro, Lorella Fatone

Subject: Computer Science And Mathematics, Computer Vision And Graphics Keywords: image denoising; image deblurring; salt&pepper noise; nonlinear diffusion.

Online: 12 June 2023 (02:18:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0134.v1

DGJ Method for Linear and Nonlinear Third order Fractional Differential Equation

Mahmut Modanli

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: DGJ method, third order fractional differential equation, nonlinear differential equation, convergence of the method.

Online: 11 December 2018 (14:01:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0442.v1

Fatigue Design Challenges in Aerospace Industry: Recent Linear and Nonlinear Models

Dimitrios Pavlou

Subject: Engineering, Mechanical Engineering Keywords: fatigue; damage; crack initiation; crack propagation; nonlinear models; crack growth retardation

Online: 19 November 2018 (10:03:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints201905.0364.v1

Laser-Plasma and Self-Absorption Measurements with Applications to Analysis of Atomic and Molecular Stellar Astrophysics Spectra

Christian Parigger, Christopher M Helstern, Ghaneshwar Gautam

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: atomic and molecular spectroscopy; time-resolved spectroscopy; laser plasma; laser-induced optical breakdown; stellar astrophysics spectra; white dwarf stars; hydrogen; carbon Swan spectra

Online: 30 May 2019 (08:53:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1014.v1

Investigating the Impact of Music Performance Anxiety (MPA) on Academic Performance in Music Education: A Nonlinear Data Fusion Model Approach

Lingxu Peng, Xiangkun Fang, Longchuan Guo

Subject: Arts And Humanities, Music Keywords: music education; Music Performance Anxiety (MPA); nonlinear system; questionnaire investigation; data fusion

Online: 15 May 2024 (08:24:16 CEST)

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This research aims to investigate psychological anxiety factors, particularly Music Performance Anxiety (MPA), that influence the sustainability of music learning systems. This study employs an innovative integration of qualitative and quantitative methodologies, marking the first use of a nonlinear system paired with a comprehensive data framework for analyzing questionnaire responses. This approach allows for a detailed examination of the effects of these factors on academic outcomes. Previous research has primarily focused on the fragmented music learning system from the perspective of teachers' instructional strategies, emphasizing phased teaching methods and learning objectives which focus often neglected a significant subset of music learners. Addressing this oversight, the current study specifically centers on the emotional aspects of anxiety within music learning systems, with a particular emphasis on students, who play a crucial role in music education. This perspective enables a deep exploration of how MPA and other related emotional factors affect music learning systems. A notable innovation of this research is the development of a stochastic nonlinear system designed to model the psychological factors impacting student music learning, complemented by a quantitative model that assesses actual learning outcomes. By analyzing this nonlinear system, the research identifies weight values for various negative emotions, particularly those related to MPA, that significantly influence the music learning process. The integration of MPA and other anxiety related emotional factors with practical learning outcomes provides a comprehensive understanding of their combined impact on the music learning system. These insights are invaluable for educators and policymakers aiming to enhance both the effectiveness and emotional well-being within music education. This comprehensive approach offers a novel perspective in understanding and improving the dynamics of music education through a more empathetic and scientifically grounded lens.

Preprint ARTICLE | doi:10.20944/preprints202405.2009.v1

Characterization of Na_0.5Bi_0.5TiO₃ Single Crystals by X-ray Diffraction, Scanning Electron Microscopy, X-ray Photoelectron Spectroscopy, Optical Absorption, Electric and Thermoelectric Properties Studies

Jan J.Suchanicz, Kamila Kluczewska-Chmielarz, Grzegorz Jagło, Andrzej Kruk, Antoni Kania, Dorota Sitko, Michalina Nowakowska-Malczyk, Marcin Łapiński, Grzegorz Stachowski, Tatiana Kruzina

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: Na_0.5Bi_0.5TiO₃ single crystals; insulator-metal transition; electrical conductivities; relaxation process

Online: 30 May 2024 (10:42:39 CEST)

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High-quality and large-size single crystals of lead-free Na0.5Bi0.5TiO3 were grown using the Czo-chralski technique. The crystals had pure perovskite structure with rhombohedral symmetry and were translucent in the visible and near infrared spectral ranges recorded in the interval 350-1050 nm. The energy gaps determined from the X-ray photoelectron spectroscopy (XPS) and optical measurements were approximately 2.92 eV. The current-voltage characteristics, depolarization current, dc (σdc) and ac (σac) electrical conductivity, and Seebeck coefficient of the crystals were investigated. The frequency/temperature-dependent electrical properties were also measured and analyzed through complex impedance spectroscopy. An overlapping reversible insulator-metal transition (resistive switching) on nanoscales, caused by the electric field, was detected. This was the first time that most of these investigations were performed for this material. The following conductivity mechanisms of NBT single crystals were identified: (i) quasi-free electron and hole conduction and hopping-charges mechanism at low temperatures, (ii) small polaron conductivity in the middle temperature range, and (iii) a significant contribution of the oxygen vacancies to conductivity in the high temperature range. The activation energy values determined from the conductivity data, the imaginary part of the electric impedance and the modulus indicate that the relaxation process in the high-temperature range is attributable to both single and double ionized oxygen vacancies, in combination with the hopping of electrons between Ti4+ and Ti3+. P-type electrical conductivity was also found. These discoveries create new possibilities of reducing the electrical conductivity of NBT and improving the process of effectively poling this material. The density of the electronic states was investigated using an ab initio method. The energy gap cal-culated for NBT (R3c) was 2.8 eV, and is well comparable to those determined from XPS and optical measurements. Our results indicate the possibility of tuning material properties by inten-tionally creating non-stoichiometry/structural defects (oxygen vacancies, cation excess and cation deficiency).

Preprint ARTICLE | doi:10.20944/preprints202309.1819.v1

Absorption-Translocation of Veterinary Antibiotics in Rice Plants Introduced with Irrigation Water

Jae Young Cho, Van Hay Duong, Il-Hwan Seo, Hee Su Jeon

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Veterinary antibiotics; translocation; phytotoxicity; bioconcentration factor; rice paddy

Online: 27 September 2023 (06:57:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1509.v1

Noise Reduction in Helicopter Cabins Using Microperforated Panel Composite Sound Absorption Structures

Chenglei Li, Yang Lu, Chunbo Lan, Yang Wang

Subject: Engineering, Aerospace Engineering Keywords: helicopter; cabin noise reduction; microperforated panel; composite acoustic structure; sound field analysis; acoustic metamaterials

Online: 21 June 2023 (08:51:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1221.v1

Sustainable Sawdust/Eucalyptol Absorption Matrix for Odor Slow-Release in Plywood Floor

Yuliya Logvina, Sónia Fernandes, Luís Pinto da Silva, Joaquim Esteves da Silva

Subject: Chemistry And Materials Science, Paper, Wood And Textiles Keywords: Carbon footprint; Wood residuals; Sawdust; eucalyptol; Odor release; Plywood; carbon footprint

Online: 29 April 2023 (07:27:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0589.v1

Identification of LLDPE Constitutive Material Model for Energy Absorption in Impact Applications

Luděk Hynčík, Petra Kochová, Jan Špička, Tomasz Bońkowski, Robert Cimrman, Sandra Kaňáková, Radek Kottner, Miloslav Pašek

Subject: Chemistry And Materials Science, Biomaterials Keywords: LLDPE; quasi-static and dynamic experimental tests, impact energy absorption; material parameter identification; constitutive material model; validation; simulation

Online: 24 March 2021 (13:38:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0258.v2

Off-Resonant Absorption Enhancement in Single Nanowires via Graded Dual-Shell Design

Wenfu Liu, Xiaolei Guo, Shule Xing, Haizi Yao, Yinling Wang, Liuyang Bai, Qi Wang, Liang Zhang, Dachuan Wu, Yuxiao Zhang, Xiao Wang, Yasha Yi

Subject: Chemistry And Materials Science, Nanotechnology Keywords: single nanowires; silicon; dual shells; off-resonance; absorption; photocurrent

Online: 31 August 2020 (08:30:22 CEST)

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