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Preprint ARTICLE | doi:10.20944/preprints202305.1525.v1

Modeling Investigation of Groove Effect on the Multipactor of Dielectric-loaded Coaxial Low-pass Filters

Jincheng Shi, Yuchao Zhao, Weixiang Zhou, Bochang Sun, Jinbo Zhang, Dongliang Wang, Ying Liu, Teng Sun, Xiangtian Zhang, Weihao Tie

Subject: Physical Sciences, Applied Physics Keywords: multipactor; groove structure; secondary electron

Online: 22 May 2023 (12:28:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1280.v1

In vivo bone progression in and around lattice implants additively manufactured with a new titanium alloy

Anne-Françoise Obaton, Jacques Fain, Dietmar Meinel, Athanasios Tsamos, Fabien Léonard, Benoît Lecuelle, Madjid Djemaï

Subject: Physical Sciences, Applied Physics Keywords: osseointegration; animal surgery; implants; lattices; titanium alloy; additive manufacturing (AM); X-ray computed tomography (XCT).

Online: 18 May 2023 (05:43:56 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202305.1203.v1

Determination of Electronic Loss in Cu(In,Ga)Se2 Solar Cell by Spectroscopic Ellipsometry Analysis and External Quantum Efficiency Simulation

Dhurba R. Sapkota, Rabee B. Alkhayat

Subject: Physical Sciences, Applied Physics Keywords: CIGS; SE measurement; Device Analysis; EQE simulation

Online: 17 May 2023 (07:33:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1081.v1

Absence of Weak Localization Effects in Strontium Ferromolybdate

Gunnar Suchaneck, Evgenii Artiukh

Subject: Physical Sciences, Applied Physics Keywords: Strontium ferromolybdate; electrical conductivity; weak localization

Online: 16 May 2023 (04:45:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0692.v1

Pyrolytic Graphite for In-Plane Force Study of Diamagnetic Levi-Tation: A Potential Magnetic Material Cracks Micro-Detector

Runze Liu, Wenjiang Yang, Hongjun Xiang, Peng Zhao, Fuwen Deng, Juzhuang Yan

Subject: Physical Sciences, Applied Physics Keywords: Pyrolytic graphite; Diamagnetic levitation; Cracks detector; In-plane motion; Fixed axis rotation

Online: 10 May 2023 (05:29:06 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202305.0584.v1

A Study on Electrothermal Characteristics of ESD Protection Devices Based on ggNMOS

Jia-xin Ju, Bing Yang, Chang-Liu Niu, Xue-ying Li

Subject: Physical Sciences, Applied Physics Keywords: electrostatic discharge; grounded-gate N-channel metal oxide semiconductor; electrothermal characteristic

Online: 9 May 2023 (07:30:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0438.v1

Luck Clustering in Sports: Applications and Implications for Performance and Strategy

Esmaeil Farshi

Subject: Physical Sciences, Applied Physics Keywords: Luck Clustering

Online: 8 May 2023 (04:11:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1188.v1

An Ultra-Low Power Consumption Urban Sewer Methane Concentration Monitoring System Based on Ultrasound

Xin Ding, Yunbo Shi, Hui Sun, Xibo Ding

Subject: Physical Sciences, Applied Physics Keywords: sewer gas detection; ultrasonic method; low power

Online: 29 April 2023 (02:35:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1151.v1

Data-driven Time Model for Subway Emergency Evacuation: A Case Study and Simulation

Yang Hui, Qiang Yu, Hui Peng

Subject: Physical Sciences, Applied Physics Keywords: emergency evacuation; complex building; theoretical model; numerical simulation

Online: 28 April 2023 (08:46:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1016.v1

Traceability of the Micro Scale Pipe Viscometer for Traceable Calibration of Dynamic Viscosity

Stefanie Neuhaus, Hugo Bissig, Benjamin A. Bircher, Marc De Huu

Subject: Physical Sciences, Applied Physics Keywords: micro scale pipe viscometer; dynamic viscosity; traceable calibration; laminar flow regime

Online: 27 April 2023 (03:42:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0440.v1

High Thermoelectric Performance of a Novel Monolayer γ-PbSnX2(X=S, Se, Te): Predicted by First-Principles

Chang-Hao Ding, Zhi-Fu Duan, Nan-Nan Luo, Jiang Zeng, Wei Ren, Li-Ming Tang, Ke-Qiu Chen

Subject: Physical Sciences, Applied Physics Keywords: thermoelectric properties; TMDCs; first-principles; Boltzmann transport equation

Online: 17 April 2023 (10:14:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0175.v1

Semiconductor-to-Insulator Transition in Inter-electrode Bridge-Like Ensembles of Anatase Nanoparticles under a Long-Term Action of the Direct Current

Dmitry A. Zimnyakov, Sergey S. Volchkov, Mikhail Yu. Vasilkov, Ilia A. Plugin, Alexey S. Varezhnikov, Nikolay V. Gorshkov, Arseni V. Ushakov, Alexey S. Tokarev, Dmitry V. Tsypin, Dmitry Vereshagin

Subject: Physical Sciences, Applied Physics Keywords: conductivity; anatase nanoparticles; inter-electrode bridges; percolation threshold; critical exponent

Online: 11 April 2023 (02:53:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0393.v1

A Comparison of Shell Theories for Vibration Analysis of Single-Walled Carbon Nanotubes Based on an Anisotropic Elastic Shell Model

Matteo Strozzi, Isaac E. Elishakoff, Michele Bochicchio, Marco Cocconcelli, Riccardo Rubini, Enrico Radi

Subject: Physical Sciences, Applied Physics Keywords: carbon nanotubes; vibration analysis; anisotropic elastic model; shell theories; natural frequencies

Online: 22 March 2023 (09:06:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202302.0514.v1

Towards an Analytical Theory for the Solution of the Nagel-Schreckenberg Model with v_max > 1

Jorge Laval

Subject: Physical Sciences, Applied Physics Keywords: urban congestion; traffic flow theory; transportation; phase transitions; surface growth; Nonequilibrium physics; criticality

Online: 28 February 2023 (09:10:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202302.0269.v1

Traceable Spectral Radiation Model of Radiation Thermometry

Vid Mlačnik, Igor Pušnik

Subject: Physical Sciences, Applied Physics Keywords: radiation thermometry; non-contact thermometry; model of radiation thermometry; direct model of radiation thermometry; inverse model of radiation thermometry; spectral emissivity; effective emissivity; instrumental emissivity; traceability; radiation thermometry for real objects

Online: 16 February 2023 (04:28:36 CET)

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Despite great technical capabilities, the theory of non-contact temperature measurement is usually not fully applicable to the use of measuring instruments in practice. While black body calibrations are in practice well established and easy to accomplish, this calibration protocol is never fully applicable to measurements of real objects under real conditions. Currently, the best approximation to real world radiation thermometry is grey body radiation thermometry, which is supported by most measuring instruments to date. Nevertheless, the metrological requirements necessitate traceability, therefore real body radiation thermometry is required for temperature measurements of real bodies. This article documents the current state of temperature calculation algorithms for radiation-thermometers and the creation of a traceable model for radiation thermometry of real bodies that uses a digital twin model of the system of measurement to compensate for the loss of data, caused by spectral integration, which occurs when thermal radiation is absorbed on the active surface of the sensor. To solve this problem, a hybrid model with variable scalar inputs is proposed, in which the scalar input parameters are calculated to correspond to the system of measurement. The method for calculating the effective parameters is proposed and verified with the theoretical model of non-contact thermometry. The sum of effective instrumental parameters is presented for different temperatures to show that the rule of radiation thermometry of grey bodies, according to which the sum of instrumental emissivity and instrumental reflectivity equals to 1, does not hold in radiation thermometry for real bodies. Using the derived models of radiation thermometry, the uncertainty of radiation thermometry due to the uncertainty of spectral emissivity is analysed by simulated measurements along the temperature ranges of various radiation thermometers, enabling traceable non-contact temperature measurements with known measurement uncertainty under any known conditions.

Preprint ARTICLE | doi:10.20944/preprints202302.0031.v1

Chaotic Van Der Pol Oscillator Control Algorithm Comparison

Lauren Ribordy, Timothy Sands

Subject: Physical Sciences, Applied Physics Keywords: chaotic systems; Van der Pol oscillator; drive-response; synchronization of chaotic systems; global chaos synchronization; deterministic artificial intelligence; feedforward; feedback; non-linear adaptive control; online estimation; recursive least squares (RLS); exponential forgetting; Kalman filter; least mean squares (LMS).

Online: 2 February 2023 (06:17:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0179.v1

Limits to the Simulation Hypothesis

Ozzy Kirby King

Subject: Physical Sciences, Applied Physics Keywords: simulation hypothesis; simulating reality; resolution of a simulation; nested simulations; Nyquist-Shannon sampling theorem; probability

Online: 10 January 2023 (07:42:05 CET)

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Preprint BRIEF REPORT | doi:10.20944/preprints202212.0551.v1

An Axiomatic Formulation of Dimensionless Constants in Physical Sciences Beyond their Ascertained Invariance

Dimitris M. Christodoulou, Demosthenes Kazanas

Subject: Physical Sciences, Applied Physics Keywords: Cosmology; Elementary particles; Gravitation.

Online: 29 December 2022 (02:43:29 CET)

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Preprint ARTICLE | doi:10.20944/preprints202212.0476.v1

Optimization of a single ion Heat engine for adiabatic processe at high and low temperature limits

Abdi Belina Atomsa, Tolasa Adugna Dima

Subject: Physical Sciences, Applied Physics Keywords: Adiabatic; figure of merit; Heat engine; Single

Online: 26 December 2022 (06:50:12 CET)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202212.0373.v1

Diffuse Optical Tomography: Theoretical Basis, Advantages, and Applications

Connor Peirson

Subject: Physical Sciences, Applied Physics Keywords: Diffuse Optical Tomography, Near-infrared, Inverse problem, Spectroscopy, Medical Imaging, fNIRS, Tissue

Online: 21 December 2022 (02:21:42 CET)

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Preprint REVIEW | doi:10.20944/preprints202212.0367.v1

Graphene Oxide Thin Films for Integrated Electronics and Photonics

David Moss

Subject: Physical Sciences, Applied Physics Keywords: Graphene oxide; 2D materials; integrated optics; nonlinear optics; photonic integrated circuits

Online: 20 December 2022 (10:28:11 CET)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202211.0218.v2

Tomographic Medical Imaging Modalities: a Short Conceptual Introduction

Mark Kory

Subject: Physical Sciences, Applied Physics Keywords: Tomography, Medical Imaging; Ultrasound, EIT; CT Diffuse Optical Tomography; Magnetic Resonance Imaging; Photoacoustic; Positron Emission; fNIRS

Online: 19 December 2022 (02:40:26 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints202212.0295.v1

A Novel Technique for Ultrathin Inhomogeneous Dielectric Powder Layer Sensing Using a W-Band Metasurface

Zachary Austin Kurland, Thomas Goyette, Andy Gatesman

Subject: Physical Sciences, Applied Physics Keywords: Metasurface; Materials characterization; Sensing; Microwave sensors; Powders; Materials science; Millimeter wave devices

Online: 16 December 2022 (05:45:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints202204.0178.v2

Bending Response and Energy Dissipation of Interlayered Slidable Friction Booklike-Plates

Bohua Sun, Wen Dang, Xuanting Liu, Xiao-Lin Guo

Subject: Physical Sciences, Applied Physics Keywords: Hardcover book; multilayer; plates; curvature; bending; friction; dissipation; deflection

Online: 14 December 2022 (06:19:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints202209.0443.v2

A Non-inductive Magnetic Eye-Tracker: From Dipole Tracking to Gaze Retrieval

Valerio Biancalana, Piero Chessa

Subject: Physical Sciences, Applied Physics Keywords: Eye Tracking; Magnetic tracker; Magnetic Sensor; Sensor Array; eye motion; Donders' Law; Listing's law

Online: 8 December 2022 (11:02:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202212.0151.v1

Accurate Calculation Method Study of Model Attitude on Wind Tunnel Test

Jun jin Jiang, Zhong lian Chen, Rui Xu

Subject: Physical Sciences, Applied Physics Keywords: attitude angel; angel Vector Coordinate System; Iterative calculation; Spherical Coordinate System; Wind Tunnel Test

Online: 8 December 2022 (09:31:35 CET)

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The accurate of model attitude angel plays an important role on the aerodynamic test results in the wind tunnel test. The original method applies the spherical coordinate system transformation to obtain attitude angel calculation. The model attitude angel is obtained by coordinate transformation and spherical surface mapping applying the nominal attitude angel (the balance attitude angel in the wind tunnel coordinate system) indicated by the mechanism. First, the coordinate transformation of this method is not only complex but also difficult to establish the transformed relationship between the space coordinate systems especially after many steps of coordinate transformation, moreover it cannot realize the iterative calculation of the interference relationship between attitude angels; Second, during the calculate process to solve the problem the arc is approximately used to replace the straight line, the angel for the tangent value, and the inverse trigonometric function is applied. Therefore, in the calculation of attitude angel, the process is complex and inaccurate, which can be solved approximately when calculating small attack angel. However, with the advancing development of modern aerodynamic unsteady research, the aircraft tends to develop high or super large attack angel and unsteady research field. According to engineering practice and vector theory, the concept of vector angel coordinate system is proposed for the first time, and the vector angel coordinate system of attitude angel is established. With the iterative correction calculation and avoiding the problem of approximate and inverse trigonometric function solution, the model attitude calculation process is carried out in detail, which validates that the calculation accuracy and accuracy of model attitude angels are improved. Based on engineering and theoretical methods, a vector angel coordinate system is established for the first time, which gives the transformation and angel definition relations between different flight attitude coordinate systems, that can accurately calculate the attitude angel of the corresponding coordinate system and determine its direction, especially in the channel coupling calculation, the calculation of the attitude angel between the coordinate systems is only related to the angel, and has nothing to do with the change order s of the coordinate system, which simplifies the calculation process.

Preprint ARTICLE | doi:10.20944/preprints202211.0571.v1

High Vacuum Flat Plate Photovoltaic-Thermal (PV-T) Collectors: Efficiency Analysis

Daniela De Luca, Paolo Strazzullo, Emiliano Di Gennaro, Antonio Caldarelli, Eliana Gaudino, Marilena Musto, Roberto Russo

Subject: Physical Sciences, Applied Physics Keywords: Solar energy; photovoltaic-thermal; electrical efficiency; thermal efficiency; exergetic efficiency; energy bandgap

Online: 30 November 2022 (10:07:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0373.v1

Spatiotemporal Variability Analysis of Glaciers in the Hindukush Region of Pakistan using Remote Sensing Data

Ahsan Riaz Khan, Jabir Hussain Syed, Muhammad Irfan, Mehrab Khan, Muhammad Shafi, Hamid Iqbal, Muhammad Usman Hanif, Yasmeen Nargis

Subject: Physical Sciences, Applied Physics Keywords: Indus; Gilgit Watershed; Hydrological characteristics; glacier changes; Landsat

Online: 21 November 2022 (04:54:14 CET)

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Glaciers in northern Pakistan are a prime source of freshwater, providing headwater in the Indus river system and serving as a lifeline to millions of people in the region. These glaciers undergo continuous changes by melting due to global warming or accumulation due to snowfall/precipitation at higher altitudes. In this study, we used remote sensing data to quantify glacier changes in spatiotemporal variability in the past three decades. Five glaciers in the Gilgit region (near the junction of the Hindukush and Karakoram Mountains) with an extent of less than 5 square kilometers were selected, namely Phakor glacier, Karamber glacier, East Gammu glacier, Bhort glacier, and Bad-e-Swat glacier. The fluctuations in these glaciers were monitored using a digital elevation model (DEM) and a cloud-free continuous series of Landsat satellite pictures from the minimal snow cover season. The annual climatic trends were studied through spatially interpolated gridded climate data WοrldClim version-1 climate database for 1970 – 2000. We used it to study the variations of minimum and maximum temperature, solar radiation, and precipitation through the preparation of sub-sets from the original global grids. Because of its exact delineation in the Gilgit sub-basin, the characterized watersheds were visually compared to optical Landsat 8 OLI data for mountainous ridge matching, revealing that SRTM 30m (radar-based) demonstrated greater accuracy than other DEMs. The temporal assessment of Bhort, Bad-e-Sawat, East Gammu, Karamber, and other rivers was also carried out. It is observed that the glaciers in the Gilgit watershed are rather stable. The little variability of glaciers is due to their geographic condition, altitude, topography, and orientation. Validation of the mapped glacier classes has been performed to check the accuracy assessment through an error matrix method. The kappa coefficient from the error matrix has been calculated to be 84 %. The study makes a critical input to a greater understanding of watershed controlling and hydrological processes in the upper Indus catchment's Gilgit watershed.

Preprint CONCEPT PAPER | doi:10.20944/preprints202211.0218.v1

Tomographic Medical Imaging Modalities: a Short Conceptual Introduction

Mark Kory

Subject: Physical Sciences, Applied Physics Keywords: Tomography, Medical Imaging; Ultrasound, EIT; CT Diffuse Optical Tomography; Magnetic Resonance Imaging; Photoacoustic; Positron Emission; fNIRS

Online: 11 November 2022 (06:13:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0214.v1

The Ultrasound Action on the Laser– Induced Breakdown and Spectral Elemental Analyzes of Seawater

Alexey V. Bulanov, Vladimir A. Krikun, Ivan G. Nagorny

Subject: Physical Sciences, Applied Physics Keywords: laser–induced breakdown; ultrasound; spectroscopy; sea water

Online: 11 November 2022 (03:51:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0055.v1

Hydrogeophysical, Environmental and Groundwater Potential Assessment in the Ternate Basin, North Maluku Province, Indonesia

Kadri Daud, Henny Pramoedyo, Aminudin Afandhi, Ishardita Pambudi Tama

Subject: Physical Sciences, Applied Physics Keywords: Aquifer, Ternate Island, Regional geology, Groundwater potential, Hydrogeochemistry zone.

Online: 2 November 2022 (11:02:30 CET)

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Ternate Island is a volcanic island resulting from the activity of the Gamalama Volcano which is located in the northern Maluku archipelago, Indonesia. Ternate Island is famous as the only island that produces special spices and is the zero point of the world's spice route because the main producer of cloves is here. As a small island, Ternate Island has several limitations including the availability of water resources. Given the scarcity of surface water on the island of Ternate, groundwater in shallow aquifers and deep aquifers is the main source of fresh water which is important for irrigation activities, tourism, services and supporting urban and industrial infrastructure, as well as drinking water needs for people who live densely and are concentrated in the east. and the southern part of the island which is now the city of Ternate. The phenomenon of groundwater utilization in Ternate City is generally massively carried out to support economic activities in the city of Ternate. The purpose of this study was to evaluate the potential and quality of groundwater resources which are an important part of water management on the island of Ternate by microzoning the quality of groundwater for the sustainability of the city which is famous as the world's spice city based on its groundwater potential. Determination of groundwater samples as many as 67 wells distributed on the island of Ternate, 58 well sample points were categorized as free aquifers (MA-SG) and 7 points of depressed aquifers (SB). Ternate island area of 102 km2 with volcanic geology in 3 rock categories. Geological distribution also affects the hydrogeological potential and groundwater quality on the island of Ternate. Piper's trilinear diagram and stiff diagram methods were adopted for the assessment of the main ion quality of groundwater and the distribution of groundwater potential was interpolated with cubic splines to obtain correlations between sample points based on basic parameters of volcanic hydrogeology. The total potential for groundwater recharge is 1,291 million m3/year, there are 5 groundwater quality zones spread among 67 sample points with 76% distribution of elements Calcium Bicarbonate (CaCO3), Sodium Bicarbonate (NaHCO₂), magnesium bicarbonate Mg(HCO3)2 and widely distributed on the island of ternate, while 25% magnesium chloride (MgCl2) and potassium chloride (KCL) are scattered locally on the island of ternate. On an ongoing basis the bicarbonate facies micro-zonation is hydrogeochemical with local flow interactions in volcanic deposits, where infiltration tends to be close to the groundwater sample point, while the chloride facies is a groundwater zone that is correlated with flow patterns from upstream to downstream and has interacted with magma or was intruded. seawater is characterized by high Ca and TDS.

Preprint ARTICLE | doi:10.20944/preprints202101.0501.v3

An Exact Solution to the Free Vibration Analysis of a Uniform Timoshenko Beam Using a Moment-Shear Force-Circular Frequency-Curvature Relationship

Valentin Fogang

Subject: Physical Sciences, Applied Physics Keywords: Timoshenko beam; rotary inertia; moment shear force circular frequency curvature relationship; spring mass system; closed-form solutions; first-order dynamic stiffness matrix; second-order vibration analysis

Online: 7 October 2022 (10:34:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0444.v1

Reciprocity and Representations for Wave Fields in 3D Inhomogeneous Parity-Time Symmetric Materials

Kees Wapenaar, Evert Slob

Subject: Physical Sciences, Applied Physics Keywords: parity-time symmetry; reciprocity; Green’s matrix; metamaterials

Online: 28 September 2022 (13:27:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0443.v1

A Non-inductive Magnetic Eye-Tracker: From Dipole Tracking to Gaze Retrieval

Valerio Biancalana, Piero Chessa

Subject: Physical Sciences, Applied Physics Keywords: Eye Tracking; Magnetic tracker; Magnetic Sensor; Sensor Array; eye motion; Donders' Law; Listing's law

Online: 28 September 2022 (12:30:28 CEST)

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Preprint REVIEW | doi:10.20944/preprints202209.0385.v1

A Review of Thermal Spectral Imaging Methods for Monitoring High-temperature Molten Material Streams

Katarina Grujic

Subject: Physical Sciences, Applied Physics Keywords: spectral imaging; metallurgy; infrared thermography; pyrometry; temperature measurement; flow rate

Online: 26 September 2022 (08:47:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0374.v1

Towards Innovative Solutions for Monitoring Precipitation in Poorly Instrumented Regions: Real-Time System for Collecting Power Levels of Microwave Links of Mobile Phone Operators for Rainfall Quantification in Burkina Faso

Moumouni Djibo, Wend-Yam Serge Boris Ouédraogo, Ali Doumounia, Serge Roland Sanou, Moumouni Sawadogo, Idrissa Guira, Nikola Koné, Christian Chwala, Harald Kunstmann, François Zougmoré

Subject: Physical Sciences, Applied Physics Keywords: Commercial microwave links; Power level; SNMP protocol; Acquisition system; Rainfall estimation

Online: 26 September 2022 (02:05:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0337.v1

Elemental Laser-Plasma Analysis of Pointed Gourd Leaves for Diabetes Management

Tejmani Kumar, Prashant K Rai, Abhishek K Rai, Nilesh K Rai, Awadhesh K Rai, Christian Parigger, Geeta Watal, Suman Yadav

Subject: Physical Sciences, Applied Physics Keywords: optical emission spectroscopy; laser induced optical breakdown; trichosanthes dioica; pointed gourd; diabetes; biomedicine; biophysics

Online: 22 September 2022 (09:41:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0331.v1

Dynamic Ramsey Theory of Mechanical Systems Forming a Complete Graph and Vibrations of Cyclic Compounds

Nir Shvalb, Mark Frenkel, Shraga Shoval, Edward Bormashenko

Subject: Physical Sciences, Applied Physics Keywords: Ramsey theory; complete graph; vibrational spectrum; eigenfrequency; selection rule; cyclic molecule

Online: 22 September 2022 (03:33:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0257.v1

Nature’s Wind Turbines: The Measured Aerodynamic Efficiency of Spinning Seeds Approaches Theoretical Limits

Timothy Molteno

Subject: Physical Sciences, Applied Physics Keywords: Betz Limit; Aerodynamic Efficiency; Biomimicry

Online: 19 September 2022 (03:47:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0225.v1

Quantum Mechanical Comparison between Lithiated and Sodiated Silicon Nanowires

Donald Boone

Subject: Physical Sciences, Applied Physics Keywords: lithium; sodium; silicon; nanowire; quantum mechanics

Online: 15 September 2022 (08:47:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0521.v1

Exciton-Assisted UV Stimulated Emission with Incoherent Feedback in Polydisperse Crystalline ZnO Powder

Leonid Fedorenko, Volodymyr Litovchenko, Vadym Naumov, Dmytro Korbutyak, Volodymyr Yukhymchuk, Olexander Gudymenko, Olexander Dubikovskyi, Hidenori Mimura, Arturs Medvids

Subject: Physical Sciences, Applied Physics Keywords: ZnO crystallite; random laser; excitons; stimulated emission; polydisperse powder; thin film; hexagonal microdisks; monodisperse nano-powder; nanophotonics

Online: 30 August 2022 (10:45:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0050.v1

Did Maxwell Dream of Electrical Bacteria?

Eleonora Alfinito, Maura Cesaria, Matteo Beccaria

Subject: Physical Sciences, Applied Physics Keywords: quorum sensing; resistance random network; complex networks

Online: 2 August 2022 (08:21:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0034.v1

High Sensitivity Sers Substrate of A Few Nanometers Single-Layer Silver Thickness Fabricated by DC Magnetron Sputtering Technology

Hsing-Yu Wu, Hung-Chun Lin, Guan-Yi Hung, Chi-Shun Tu, Ting-Yu Liu, Chung-Hung Hong, Guoyu Yu, Jin-Cherng Hsu

Subject: Physical Sciences, Applied Physics Keywords: surface-enhanced Raman scattering (SERS); silver nanoparticle (AgNP); rhodamine 6G (R6G); dc magnetron sputtering; SERS substrate; hotspot; analytical enhancement factor (AEF); limit of detection (LOD); relative standard deviation (RSD)

Online: 2 August 2022 (04:23:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0288.v1

Design, Construction and Characterization of Sealed Tube Medium Power CO₂ Laser System

Muddasir Naeem, Tayyab Imran, Mukhtar Hussain, Arshad Saleem Bhatti

Subject: Physical Sciences, Applied Physics Keywords: ZEMAX; Thermoelectric coolers; Flyback transformer; High tension pump source; Penetration depth

Online: 19 July 2022 (13:28:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0284.v1

Orbital and Spin Dynamics of Electron’s States Transition in Hydrogen Atom Driven by Electric Field

Ciann-Dong Yang, Shiang-Yi Han

Subject: Physical Sciences, Applied Physics Keywords: two-level transition; electron dynamics; spin dynamics; spin angular momentum perturbation

Online: 19 July 2022 (09:53:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0215.v1

Assembly and Disassembly Mechanics of a Spherical Snap Fit

Guo Xiaolin, Sun Bohua

Subject: Physical Sciences, Applied Physics Keywords: snap fit; elasticity; friction; asymmetry; beam; spherical

Online: 14 July 2022 (11:34:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0159.v1

Marchenko Green's Function Retrieval in Layered Elastic Media from Two-Sided Reflection and Transmission Data

Joost Van Der Neut, Joeri Brackenhoff, Giovanni Meles, Evert Slob, Kees Wapenaar

Subject: Physical Sciences, Applied Physics Keywords: Marchenko equation; Green's function retrieval; elastodynamic wave propagation

Online: 11 July 2022 (11:19:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0128.v1

Structural and Dynamical Properties of Liquid Water Increase Turbulent Flows

Arturo Tozzi, James Peters, Lucio Mariniello

Subject: Physical Sciences, Applied Physics Keywords: Reynold number; high-density water; molecular dynamics; water model; percolation theory

Online: 8 June 2022 (12:24:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0382.v1

Aerodynamic Shape and Drag Scaling Laws of Flexible Fibre in Flowing Medium

Bohua Sun, Xiao-Lin Guo

Subject: Physical Sciences, Applied Physics Keywords: flexible fibre; flow medium; aerodynamic shape; drag; scaling laws

Online: 27 May 2022 (10:46:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0322.v1

On the Pull-out Mechanical Properties of the Diabolical Ironclad Beetle Bionic Jigsaw Connection

Jie Wei, Bohua Sun

Subject: Physical Sciences, Applied Physics Keywords: Theoretical analysis; bionics; jigsaw connection; 3D Printing; ﬁnite element

Online: 24 May 2022 (05:06:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0317.v1

Planar Strained Layer Superlattice Infrared Photodetectors Fabricated by Ion-Implantation

Arash Dehzangi

Subject: Physical Sciences, Applied Physics Keywords: Ion Implantation; Planar photodetectors; Strained layer superlattice; Quantum efficiency; Ion implantation energy

Online: 24 May 2022 (04:16:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0090.v1

An Ice Microphysics-Based Machine Learning Approach to Classify Precipitation Type over Land from Global Precipitation Measurement Microwave Imager (GPM-GMI) Measurements

Spandan Das, Yiding Wang, Jie Gong, Leah Ding, Stephen Joe Munchak, Chenxi Wang, Dong Wu, Liang Liao, William S. Olson, Donifan O. Barahona

Subject: Physical Sciences, Applied Physics Keywords: machine learning/artificial intelligence; precipitation type classification; passive microwave; precipitation radar; retrieval algorithm

Online: 7 May 2022 (03:46:06 CEST)

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Precipitation type is a key parameter used for better retrieval of precipitation characteristics as well as to understand the cloud-convection-precipitation coupling processes. Ice crystals and water droplets inherently exhibit different characteristics in different precipitation regimes (e.g., convection, stratiform), which reflect on satellite remote sensing measurements that help us distinguish them. The Global Precipitation Measurement (GPM) Core Observatory’s Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) together provide ample information on global precipitation characteristics. As an active sensor, DPR provides an accurate precipitation type assignment, while passive sensors like GMI are traditionally only used for empirical understanding of precipitation regimes. Using collocated precipitation type flags from DPR as the “truth”, this paper employs machine learning (ML) models to train and test the predictability and accuracy of using passive GMI-only observations together with ancillary information from reanalysis and GMI surface emissivity retrieval products. Out of six ML models, four simple ones (Support Vector Machine, Neural Network, Random Forest, and Gradient Boosting) and the 1-D convolutional neural network (CNN) model are identified to produce 90% - 94% prediction accuracy globally for 5 types of precipitation (convective, stratiform, mixture, no precipitation, and other precipitation), which is much more robust than previous similar effort. One novelty of this work is to introduce data augmentation (subsampling and bootstrapping) to handle extremely unbalanced samples in each category. Careful evaluation of Impact matrices demonstrate that polarization difference (PD) and surface emissivity at high-frequency channels dominate the decision process, which are consistent with the physical understanding of polarized microwave radiative transfer over different surface types, as well as in snow and liquid clouds with different microphysical properties. Furthermore, the view-angle dependency artifact that DPR precipitation flag bears with does not propagate into the conical-viewing GMI retrievals. This work provides a new and promising way for future physics-based ML retrieval algorithm development.

Preprint ARTICLE | doi:10.20944/preprints202205.0085.v1

Calorimetric Testing of Solar Thermal Absorbers for High Vacuum Flat Panels

Carmine D’Alessandro, Davide De Maio, Antonio Caldarelli, Marilena Musto, Francesco Di Giamberardino, Matteo Monti, Teresa Mundo, Emiliano Di Gennaro, Roberto Russo, Vittorio G. Palmieri

Subject: Physical Sciences, Applied Physics Keywords: Selective Solar Absorber; Solar Absorptance; Thermal Emittance; Evacuated Flat Panel; Calorimeter; High Vacuum Flat Panel; Solar Simulator

Online: 7 May 2022 (02:52:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0286.v1

Mechanical Property Analysis of Cuttlebone-like Structure under Compression and Shearing

Fan Wu, Bohua Sun

Subject: Physical Sciences, Applied Physics Keywords: Cuttlebone-like structure; Bionic structure; Finite element analysis; 3D Printing; Compression; Shearing

Online: 29 April 2022 (04:06:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0262.v1

Clamping Force of A Multilayered Cylindrical Clamp with Internal Friction

Bohua Sun, Xiao-Lin Guo

Subject: Physical Sciences, Applied Physics Keywords: Clamping force; multilayer clamp; curvature; bending; friction; dissipation; deflection

Online: 27 April 2022 (11:35:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0178.v1

Cylindrical Bending of A Hardcover Book with Internal Friction

Bohua Sun, Wen Dang, Xuanting Liu, Xiao-Lin Guo

Subject: Physical Sciences, Applied Physics Keywords: Hardcover book; multilayer; plates; curvature; bending; friction; dissipation; deflection

Online: 19 April 2022 (07:48:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0080.v1

The Effect of Negative Mass in Gravitating System

Edward Bormashenko

Subject: Physical Sciences, Applied Physics Keywords: core-spring-shell system; gravitating system; negative mass; Coulomb-like forces

Online: 8 April 2022 (11:12:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0023.v1

A Hybrid Self-Seeded Ti:sapphire Laser with a Pumping Scheme Based on Spectral Beam Combination of Continuous-Wave Diode and Pulsed DPSS Lasers

Volker Thomas Sonnenschein, Hideki Tomita

Subject: Physical Sciences, Applied Physics Keywords: Ti:sapphire laser; amplifier; injection-lock; Diode pumping; solid state laser

Online: 5 April 2022 (09:51:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0018.v1

Suspended Water Droplet Confined Laser Shock Processing at Elevated Temperatures

Jian Liu, Xiaohan Zhang, Yali He, Zhe Zhao, Min Xia, Yaowu Hu

Subject: Physical Sciences, Applied Physics Keywords: Droplet; Laser shock; High temperatures; Dynamics; Focusing enhancement

Online: 4 April 2022 (12:02:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0310.v1

Avoiding the Great Filter: Predicting the Timeline for Humanity to Reach Kardashev Type I Civilization

Jonathan H. Jiang, Fuyang Feng, Philip E. Rosen, Kristen A. Fahy, Antong Zhang, Piotr Obacz, Prithwis Das, Zong-Hong Zhu

Subject: Physical Sciences, Applied Physics Keywords: Kardashev scale; civilization; energy consumption and supply

Online: 23 March 2022 (05:19:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202202.0323.v1

Evaluation of Face Shields, Goggles and Safety Glasses as a Virus Transmission Control Measure to Protect the Wearer Against Cough Droplets

Samantha Hall, Paul Johnson, Claire Bailey, Zoe Gould, Robert White, Brian Crook

Subject: Physical Sciences, Applied Physics Keywords: face shield; goggles; safety glasses; cough; droplets; virus transmission; COVID 19; exposure

Online: 25 February 2022 (06:52:12 CET)

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Face shields (also referred to as visors), goggles and safety glasses have been worn during the COVID-19 pandemic as one measure to control transmission of the virus. However, their effectiveness in controlling facial exposure to cough droplets is not well established and standard tests for evaluating eye protection for this application are limited. A method was developed to evaluate face shields, goggles and safety glasses as a control measure to protect the wearer against cough droplets. The method uses a semi-quantitative assessment of facial droplet deposition. A cough simulator was developed to generate droplets comparable to those from a human cough. The droplets consisted of a UV fluorescent marker (fluorescein) in water. Fourteen face shields, four pairs of goggles and one pair of safety glasses were evaluated by mounting them on two different sizes of breathing manikin head and challenging them with the simulated cough. The manikin head was positioned in seven orientations relative to the cough simulator to represent various potential occupational exposure scenarios, for example, a nurse standing over a patient. Droplet deposition in the eyes, nose and mouth regions were visualised following three ‘coughs’. Face shields, goggles and safety glasses reduced, but did not eliminate exposure to the wearer from droplets such as those produced by a human cough. The level of protection differed based on the design of the personal protective equipment and the relative orientation of the wearer to the cough. For example, face shields and goggles offered the greatest protection when a cough challenge was face on or from above and the least protection when a cough challenge was from below. Face shields were also evaluated as source control to protect others from the wearer. Results suggested that if a coughing person wears a face shield, it can provide some protection from cough droplets to those standing directly in front of the wearer.

Preprint ARTICLE | doi:10.20944/preprints202202.0037.v1

Investigation of Elastic Properties of WO3 Thin Films Supported on Quartz in SAW Sensing Devices

Madjid Arab, Véronique Madigou, Virginie Chevallier, Christian Turquat, Christine Leroux

Subject: Physical Sciences, Applied Physics Keywords: SAW devices; Tungsten trioxide; FEM/BEM; Harmonic admittance; elastic properties

Online: 2 February 2022 (14:53:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202201.0175.v1

Equivalent Electronic Circuit of a System of Oscillators Connected With Periodically Variable Stiffness

Soumyajit Seth, Grzegorz Kudra, Krzysztof Witkowski, Jan Awrejcewicz

Subject: Physical Sciences, Applied Physics Keywords: Parametric excitation; Dry-Friction; Magnetic Spring Force; Electronic circuit

Online: 12 January 2022 (14:33:34 CET)

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Preprint SHORT NOTE | doi:10.20944/preprints202201.0166.v1

Two Notes on the Theoretical Physics of ATP Synthase

Archit Chaturvedi

Subject: Physical Sciences, Applied Physics Keywords: Theoretical Biophysics; Mathematical Biophysics; Theoretical Biology; Molecular Biophysics

Online: 12 January 2022 (13:38:59 CET)

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Preprint REVIEW | doi:10.20944/preprints202201.0079.v1

Solving the ‘Two Times Problem’ With an Information Gathering and Utilizing System (IGUS)

Ronanld P. Gruber, Carlos Montemayor, Richard A. Block

Subject: Physical Sciences, Applied Physics Keywords: IGUS; flow of time; passage

Online: 6 January 2022 (11:41:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints202201.0076.v1

Assembly and Disassembly Mechanics of a Cylindrical Snap Fit

Xiao-Lin Guo, Bohua Sun

Subject: Physical Sciences, Applied Physics Keywords: Snap fit, elasticity, friction, geometry, beam, symmetry breaks

Online: 6 January 2022 (11:36:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0436.v1

Reaction Center of Rhodobacter Sphaeroides, a Photoactive Protein for pH Sensing: A Theoretical Investigation of Charge Transport Properties

Eleonora Alfinito, Lino Reggiani

Subject: Physical Sciences, Applied Physics Keywords: photosensitive protein; electrical response; theoretical modelling; CAFM; EIS

Online: 27 December 2021 (15:48:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0434.v1

Phase Optimization for Multipoint Haptic Feedback Based on Ultrasound Array

Zhili Long, Shuyuan Ye, Zhao Peng, Yuyang Yuan, Zhouhua Li

Subject: Physical Sciences, Applied Physics Keywords: Haptic feedback, Phase optimization, Pseudo-inverse algorithm, Ultrasound array.

Online: 27 December 2021 (14:54:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0418.v1

Preliminary Analysis of a Nano Relativistic Motor

Asher Yahalom

Subject: Physical Sciences, Applied Physics Keywords: Relativity; Nano Technology; Magnetic materials

Online: 27 December 2021 (09:59:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0277.v1

Change of Persistence in European Electricity Spot Prices

Leonardo Rydin Gorjão, Dirk Witthaut, Pedro G. Lind, Wided Medjroubi

Subject: Physical Sciences, Applied Physics Keywords: Electricity spot markets; EPEX; Nord Pool; Increment statistics; Persistence; Hurst coefficient; Detrended Fluctuation Analysis; Kramers–Moyal equation

Online: 16 December 2021 (15:04:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0275.v1

Approximating the Steady-state Temperature of 3D Electronic Systems with Convolutional Neural Networks

Monika Stipsitz, Hèlios Sanchis-Alepuz

Subject: Physical Sciences, Applied Physics Keywords: Physics simulations; Neural Networks; Electronic design; Heat equation

Online: 16 December 2021 (14:55:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0042.v1

How to Surpass the Deep-Sea Glass Sponges Mechanically

Quan-Wei Li, Bohua Sun

Subject: Physical Sciences, Applied Physics Keywords: Bioinspired materials; Lattice structure; Euplectella aspergillum; Buckling; Optimization

Online: 3 December 2021 (09:45:28 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0572.v1

Synthesis and Characterization of Al-doped NiO Nanostructured Thin Films Elaborated by Solar Spray Pyrolysis Technique, for Photovoltaic Cells

Abdelbaki NID, Lilia ZIGHED, Yacine AOUN, Bedreddine MAAOUI

Subject: Physical Sciences, Applied Physics Keywords: Nickel oxide; Thin films; Al doping ratio; Solar spray pyrolysis; Solar heater; Furnace.

Online: 30 November 2021 (13:29:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0349.v3

Geometry-Induced Rigidity in Elastic Torus from Circular to Oblique Elliptic Cross-Section

Bohua Sun

Subject: Physical Sciences, Applied Physics Keywords: elliptic torus; oblique; nonlinear deformation; vibration; Gauss curvature; Maple

Online: 25 November 2021 (11:21:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0259.v1

Study on Electromagnetic Radiation Interference Caused by Rocket Fuel

Yuanbo Cui, Deren Kong, Jian Jiang, Shang Gao, Shuai Wang

Subject: Physical Sciences, Applied Physics Keywords: electromagnetic radiation; spacecraft; fuel; interference; modelling

Online: 15 November 2021 (12:05:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0030.v1

Reservoir Computing with Delayed Input for Fast and Easy Optimization

Lina Jaurigue, Elizabeth Robertson, Janik Wolters, Kathy Lüdge

Subject: Physical Sciences, Applied Physics Keywords: reservoir computing; time series prediction; performance optimisation

Online: 2 November 2021 (10:09:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints202110.0449.v1

Vis and NIR Diffused Reflectance Study in Disordered Bismuth Manganate ‒ Lead Titanate Ceramics

Andrzej Molak, Anna Z. Szeremeta, Janusz Koperski

Subject: Physical Sciences, Applied Physics Keywords: bismuth manganite; ceramics; composite; lead titanate; optical energy gap; surface morphology; Vis-NIR reflectance

Online: 29 October 2021 (10:13:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0393.v1

Appraisal of Drought Indices based on Climatic Variability using DrinC Software for Potwar Region in Punjab Pakistan during 1981–2019

Saira Batool, Syed Amer Mahmood, Safdar Ali Shirazi

Subject: Physical Sciences, Applied Physics Keywords: Drought indices; SPI; RDI; Climate variables; DrinC; Potwar; Pakistan

Online: 26 October 2021 (15:39:16 CEST)

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Preprint REVIEW | doi:10.20944/preprints202110.0106.v1

Combined Ketogenic Diet and Walking Exercise Interventions in Community Older Groups

Jia-Ping Wu

Subject: Physical Sciences, Applied Physics Keywords: ketogenic diet; exercise therapy; community health planning; natural; exercise intervention

Online: 6 October 2021 (12:40:59 CEST)

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Working Paper ARTICLE

Probing Electron Properties in ECR Plasmas Using X-Ray Bremsstrahlung and Fluorescence Emission

Bharat Mishra, Angelo Pidatella, Alessio Galatà, Sándor Biri, Richárd Rácz, Eugenia Naselli, Maria Mazzaglia, Giuseppe Torrisi, David Mascali

Subject: Physical Sciences, Applied Physics Keywords: ECR plasmas; warm electrons; self-consistent simulations; experimental benchmarking; volumetric and space-resolved spectra; X-ray fluorescence; bremsstrahlung; ray-tracing Monte Carlo techniques

Online: 5 October 2021 (08:58:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0040.v1

Comprehensive Study for Impure and Pure Casts of Aluminum and Copper

Raiq Al-Nima, Mahmood Al-jiboori

Subject: Physical Sciences, Applied Physics Keywords: Casts; Aluminum; Copper; Mechanical Tests

Online: 4 October 2021 (10:28:57 CEST)

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Working Paper ARTICLE

Hybrid Classical-Quantum Fitting Attention States to Statistical Mechanics of Neocortical Interactions

Lester Ingber

Subject: Physical Sciences, Applied Physics Keywords: path integral; quantum systems; neocortical interactions

Online: 1 October 2021 (10:16:43 CEST)

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Several commerical quantum computers are now available that offer Hybrid Classical-Quantum computing. Application is made to a classical-quantum model of human neocortex, Statistical Mechanics of Neocortical Interactions (SMNI), which has had its applications published in many papers since 1981. However, this project only uses Classical (super-)computers. Since 2015, PATHINT, has been used as a numerical algorithm for folding path-integrals. Applications in several systems in several disciplines has generalized been from 1 dimension to N dimensions, and from classical to quantum systems, qPATHINT. Papers have applied qPATHINT to neocortical interactions and financial options. The classical space described by SMNI applies nonlinear nonequilibrium multivariate statistical mechanics to synaptic neuronal interactions, while the quantum space described by qPATHINT applies synaptic contributions from Ca2+ waves generated by astrocytes at tripartite neuron-astrocyte-neuron sites. Previous SMNI publications since 2013 have calculated the astrocyte Ca2+ wave synaptic interactions from a closed-form (analytic) expression derived by the author. However, more realistic random shocks to the Ca2+ waves from ions entering and leaving these wave packets should be included using qPATHINT between electroencephalographic (EEG) measurements which decohere the quantum wave packets. This current project extends calculations to multiple scales of interaction between classical events and expectations over the Ca2+ quantum processes to include these random shocks to fit EEG data to the SMNI model, with previous analytic forms for the quantum processes replaced by qPATHINT. The classical-quantum system is fit using the author's Adaptive Simulated Annealing (ASA) importance-sampling optimization code. Gaussian Quadratures are used for numerical calculation of momenta expectations of the astrocyte processes that contribute to SMNI synaptic interactions. This project demonstrates how some hybrid classical-quantum systems may be calculated using only classical (super-)computers. Recent calculations also are reported using the closed-form expression, with and without shocks.

Preprint ARTICLE | doi:10.20944/preprints202109.0487.v1

Measurement of Adult Human Brain Responses to Breath Holding by Multi-Distance Hyperspectral Near-Infrared Spectroscopy

Zahida Guerouah, Steve Lin, Vladislav Toronov

Subject: Physical Sciences, Applied Physics Keywords: near-infrared spectroscopy; brain; BOLD signal; breath holding; cytochrome C oxidase

Online: 29 September 2021 (10:50:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0435.v1

Vector Potential, Magnetic Field, Mutual Inductance, Magnetic Force, Torque and Stiffness Calculation between Current-Carrying Arc Segments with Inclined Axes in Air

Slobodan Babic

Subject: Physical Sciences, Applied Physics Keywords: Magnetic vector potential; magnetic field; mutual inductance; magnetic force; torque; stiffness

Online: 24 September 2021 (12:56:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0384.v1

ZRO Drift Reduction of MEMS Gyroscopes via Internal and Packaging Stress Release

Pengfei Xu, Zhenyu Wei, Lu Jia, Yongmei Zhao, Guowei Han, Chaowei Si, Jin Ning, Fuhua Yang

Subject: Physical Sciences, Applied Physics Keywords: ZRO drift; MEMS gyroscope; internal and packaging stresses; finite element analysis; stress release

Online: 22 September 2021 (13:24:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0214.v1

Dynamic Effective Elasticity of Melanoma Cells Under Shear and Elongational Flow Confirms Estimation From Force Spectroscopy

Anna Martina Jötten, Simon Neidinger, Julia K. Tietze, Julia Welzel, Christoph Westerhausen

Subject: Physical Sciences, Applied Physics Keywords: melanoma cells; elasticity; AFM; microfludics; force spectroscopy

Online: 13 September 2021 (14:14:47 CEST)

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Working Paper ARTICLE

Theoretical Calculation of Wind (Or Water) Turbine: Extending the Betz Limit

Pierre Lecanu, joel Breard, Dominique Mouaze, Bertil Smorgrav

Subject: Physical Sciences, Applied Physics Keywords: n/a; wind turbine; tidal turbine; betz limit; Betz's law; HAWT; VAWT; potential energy; kinetic energy

Online: 27 August 2021 (11:15:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202108.0336.v1

A Novel Solution for Controlling Hardware Components of Accelerators and Beamlines

Victoria Mazalova, Igor Khokhriakov, Olga Merkulova, Alexander Nozik

Subject: Physical Sciences, Applied Physics Keywords: control system; system design; reactive system; physics facility; experiment control; x-ray spectroscopy

Online: 16 August 2021 (12:39:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0264.v1

A Novel High-Q Dual Mass MEMS Tuning Fork Gyroscope Based On 3D Wafer-Level Packaging

Pengfei Xu, Yurong He, Zhenyu Wei, Lu Jia, Guowei Han, Chaowei Si, Jin Ning, Fuhua Yang

Subject: Physical Sciences, Applied Physics Keywords: Tuning fork gyroscope; MEMS; 3D packaging; high Q-factors

Online: 12 July 2021 (13:43:38 CEST)

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Preprint HYPOTHESIS | doi:10.20944/preprints202105.0234.v3

Rethinking Life and Predicting Its Origin

Diogo Gonçalves

Subject: Physical Sciences, Applied Physics Keywords: Theory of Life; Definition of Life; Origin of Life; Electron Bifurcation; Hydrothermal Vents; Biophysics; Biological Physics

Online: 16 June 2021 (11:30:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0219.v1

Radical Reduction of Aircraft Fuel Consumption by Optimizing Aerofoil by New Evolutionary Algorithms

Jan Muller

Subject: Physical Sciences, Applied Physics Keywords: Evolutionary algorithms, shape of aerofoil, optimization of shape, Bezier-PARSEC model

Online: 8 June 2021 (12:17:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0066.v3

Quantum Foundations of Classical Reversible Computing

Michael Frank, Karpur Shukla

Subject: Physical Sciences, Applied Physics Keywords: non-equilibrium quantum thermodynamics; thermodynamics of computing; Landauer's principle; Landauer limit; reversible computing; resource theory of quantum thermodynamics; Gorini-Kossakowski-Sudarshan-Lindblad dynamics; von Neumann entropy; Rényi entropy; open quantum systems

Online: 28 May 2021 (12:13:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0349.v2

Geometry-Induced Rigidity in Elastic Torus from Circular to Oblique Elliptic Cross-Section

Bohua Sun

Subject: Physical Sciences, Applied Physics Keywords: elliptic torus; oblique; nonlinear deformation; vibration; Gauss curvature; Maple

Online: 17 May 2021 (10:15:17 CEST)

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Preprint HYPOTHESIS | doi:10.20944/preprints202105.0234.v2

Rethinking Life and Predicting Its Origin

Diogo Gonçalves

Subject: Physical Sciences, Applied Physics Keywords: Theory of Life; Definition of Life; Evolutionary Theory; Origin of Life; Electron Bifurcation; Hydrothermal Vents; Biophysics; Biological Physics

Online: 17 May 2021 (09:46:37 CEST)

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Preprint HYPOTHESIS | doi:10.20944/preprints202105.0234.v1

Rethinking Life and Predicting Its Origin

Diogo Gonçalves

Subject: Physical Sciences, Applied Physics Keywords: Theory of Life; Evolutionary Theory; Biophysics; Biological Physics; Origin of Life; Hydrothermal Vents

Online: 11 May 2021 (10:40:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0066.v2

Quantum Foundations of Classical Reversible Computing

Michael Frank, Karpur Shukla

Subject: Physical Sciences, Applied Physics Keywords: non-equilibrium quantum thermodynamics; thermodynamics of computing; Landauer's principle; Landauer limit; reversible computing; resource theory of quantum thermodynamics; Gorini-Kossakowski-Sudarshan-Lindblad dynamics; von Neumann entropy; Rényi entropy; open quantum systems

Online: 7 May 2021 (10:42:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0066.v1

Quantum Foundations of Classical Reversible Computing

Michael Frank, Karpur Shukla

Subject: Physical Sciences, Applied Physics Keywords: non-equilibrium quantum thermodynamics; thermodynamics of computing; Landauer's principle; Landauer limit; reversible computing; resource theory of quantum thermodynamics; Gorini-Kossakowski-Sudarshan-Lindblad dynamics; von Neumann entropy; Rényi entropy; open quantum systems

Online: 5 May 2021 (13:50:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0654.v3

Hybrid Classical-Quantum Fitting Attention States to Statistical Mechanics of Neocortical Interactions

Lester Ingber

Subject: Physical Sciences, Applied Physics Keywords: path integral; quantum systems; neocortical interactions

Online: 31 March 2021 (11:28:31 CEST)

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Hybrid Classical-Quantum computing has already arrived at several commercial quantum computers, offered to researchers and businesses. Here, application is made to a classical-quantum model of human neocortex, Statistical Mechanics of Neocortical Interactions (SMNI), which has had its applications published in many papers since 1981. However, this project only uses Classical (super-)computers. Since 2015, a path-integral algorithm, PATHINT, used previously to accurately describe several systems in several disciplines, has been generalized from 1 dimension to N dimensions, and from classical to quantum systems, qPATHINT. Published papers have described the use of qPATHINT to neocortical interactions and financial options. The classical space described by SMNI applies nonlinear nonequilibrium multivariate statistical mechanics to synaptic neuronal interactions, while the quantum space described by qPATHINT applies synaptic contributions from Ca2+ waves generated by astrocytes at tripartite neuron-astrocyte-neuron sites. Previous SMNI publications since 2013 have calculated the astrocyte Ca2+ wave synaptic interactions from a closed-form (analytic) expression derived by the Principal Investigator. However, more realistic random shocks to the Ca2+ waves from ions entering and leaving these wave packets should be included using qPATHINT between electroencephalographic (EEG) measurements which decohere the quantum wave packets. This current project extends calculations to multiple scales of interaction between classical events and expectations over the Ca2+ quantum processes to include these random shocks in previous codes used to fit EEG data to the SMNI model, that included the analytic forms for the quantum processes but now replaced by qPATHINT. The Principal Investigator's Adaptive Simulated Annealing (ASA) importance-sampling optimization code is used for fitting the combined classical-quantum system. Gaussian Quadratures is used for numerical calculation of momenta expectations of the astrocyte processes that contribute to SMNI synaptic interactions. This project thereby demonstrates how some hybrid classical-quantum systems may be calculated quite well using only classical (super-)computers.

Preprint ARTICLE | doi:10.20944/preprints202103.0654.v2

Hybrid Classical-Quantum Fitting Attention States to Statistical Mechanics of Neocortical Interactions

Lester Ingber

Subject: Physical Sciences, Applied Physics Keywords: path integral; quantum systems; neocortical interactions

Online: 29 March 2021 (16:22:26 CEST)

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Hybrid Classical-Quantum computing has already arrived at several commercial quantum computers, offered to researchers and businesses. Here, application is made to a classical-quantum model of human neocortex, Statistical Mechanics of Neocortical Interactions (SMNI), which has had its applications published in many papers since 1981. However, this project only uses Classical (super-)computers. Since 2015, a path-integral algorithm, PATHINT, used previously to accurately describe several systems in several disciplines, has been generalized from 1 dimension to N dimensions, and from classical to quantum systems, qPATHINT. Published papers have described the use of qPATHINT to neocortical interactions and financial options. The classical space described by SMNI applies nonlinear nonequilibrium multivariate statistical mechanics to synaptic neuronal interactions, while the quantum space described by qPATHINT applies synaptic contributions from Ca2+ waves generated by astrocytes at tripartite neuron-astrocyte-neuron sites. Previous SMNI publications since 2013 have calculated the astrocyte Ca2+ wave synaptic interactions from a closed-form (analytic) expression derived by the Principal Investigator (PI). However, more realistic random shocks to the Ca2+ waves from ions entering and leaving these wave packets should be included using qPATHINT between electroencephalographic (EEG) measurements which decohere the quantum wave packets. This current project extends calculations to multiple scales of interaction between classical events and expectations over the Ca2+ quantum processes to include these random shocks in previous codes used to fit EEG data to the SMNI model, that included the analytic forms for the quantum processes but now replaced by qPATHINT. The PI's Adaptive Simulated Annealing (ASA) importance-sampling optimization code is used for fitting the combined classical-quantum system. Gaussian Quadratures is used for numerical calculation of momenta expectations of the astrocyte processes that contribute to SMNI synaptic interactions. This project thereby demonstrates how some hybrid classical-quantum systems may be calculated quite well using only classical (super-)computers.

Preprint ARTICLE | doi:10.20944/preprints202103.0153.v1

Analytical and Semi-Analytical Solutions for the Self and Mutual Inductances of Concentric Coplanar Ordinary and Bitter Disk Coils

Slobodan Babic

Subject: Physical Sciences, Applied Physics Keywords: Ordinary disk coils; Bitter disk coils; mutual inductance, self-inductance.

Online: 4 March 2021 (10:12:28 CET)

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