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Preprint ARTICLE | doi:10.20944/preprints201812.0249.v1

Grocery Delivery or Customer Pickup - Influences on Energy Consumption and CO₂ Emissions in Munich

Lukas Hardi, Ulrich Wagner

Subject: Engineering, Energy And Fuel Technology Keywords: Grocery Delivery, Energy-Savings, CO2-Savings, Munich, Break-Even Point, Electric Delivery Vehicle, Customer Pickup, Modal Shift

Online: 20 December 2018 (12:46:13 CET)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints202102.0618.v1

The Concept of Training Image-Based Geostatistics for Spatial Distribution of Hydraulic Conductivity

Fiaz Hussain, Ray-Shyan Wu

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Interpolation; Hydraulic Conductivity; Multi-Point Geostatistics; Training Image

Online: 26 February 2021 (12:47:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints201905.0287.v1

Accounting for Wood, Foliage Properties and Laser Effective Footprint in Estimations of Leaf Area Density from multiview-LiDAR Data

Francois Pimont, Maxime Soma, Jean-Luc Dupuy

Subject: Environmental And Earth Sciences, Environmental Science Keywords: bias; efficiency; element size; LAD; LAI; leaf and wood separation; LiDAR; multiple viewpoints; point cloud; TLS; UAV; voxel

Online: 24 May 2019 (07:53:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0211.v1

Choosing the Optimal Multi-Point Iterative Method for the Colebrook Flow Friction Equation – Numerical Validation

Pavel Praks, Dejan Brkić

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: Colebrook equation; Colebrook-White; iterative methods; three-point methods; turbulent flow; hydraulic resistances; pipes; explicit approximations;

Online: 11 August 2018 (18:56:29 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202202.0045.v1

Functional Near-infrared Spectroscopy Of Prefrontal Cortex During Memory Encoding And Recall In Elderly With Type 2 Diabetes Mellitus

Fei Zhao, Machiko Tomita, Anirban Dutta

Subject: Medicine And Pharmacology, Neuroscience And Neurology Keywords: fNIRS; diabetes; brain imaging; point of care

Online: 3 February 2022 (10:10:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0368.v1

An Investigation of Point Mutations Discovers Novel Genes and Their Corresponding Motifs in Pancreatic Cancer

Amin Ghareyazi, Amir Mohseni, Hamed Dashti, Abdollah Dehzangi, Hamid R. Rabiee, Hamid Alinejad-Rokny

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: pancreatic cancer; cancer subtype identification; somatic point mutations; genotype and phenotype characterization; therapeutic targets; personalized medicine

Online: 17 August 2021 (22:24:57 CEST)

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Preprint REVIEW | doi:10.20944/preprints201810.0717.v1

On The Riemann Function

Peter J. Zeitsch

Subject: Computer Science And Mathematics, Analysis Keywords: Riemann Function; Riemann’s Method; hypergeometric function of several variables; point symmetry; generalized symmetry

Online: 30 October 2018 (09:02:41 CET)

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Preprint ARTICLE | doi:10.20944/preprints202102.0517.v1

New Study of Existence and Dimension of the Set of Solutions for Nonlocal Impulsive Differential Inclusions With Sectorial Operator

Salvatore Sessa, Nawal Alsarori, Kirtiwant Ghadle, Hayel Saleh

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Impulsive fractional differential inclusions; Nonlocal conditions; Fixed point theorems; 10 Mild solutions

Online: 23 February 2021 (14:16:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202104.0597.v1

Existence and Uniquenes Solution of Integral Equations via Common Fixed Point Theorems

Gunaseelan Mani, Arul Joseph Gnanaprakasam, Yongjin Li, Zhaohui Gu

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: integral equations; complex partial metric space; common fixed point.

Online: 22 April 2021 (09:19:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0025.v1

S3440P Substitution in C-Terminal Region of Human Reelin Dramatically Impairs Secretion of Reelin from HEK 293T Cells

Elika Esmaeilzadeh-Gharehdaghi, Ehsan Razmara, Amirreza Bitaraf, Mahdi Mahmoudi, Masoud Garshasbi

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: reelin; CTR; point mutation; secretion; RELN

Online: 1 July 2019 (17:22:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202001.0019.v1

On Fixed Point for Derivative of the Interval-Valued Functions

Mohamad Muslikh, Adem Kılıçman, Siti Hasana Sapar, Norfifah Bachok

Subject: Computer Science And Mathematics, Analysis Keywords: common fixed point theorem; set-valued maps; compatible mappings; differentiable maps; interval-valued functions

Online: 2 January 2020 (15:07:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202010.0258.v2

Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution

Muhammad Musaddique Ali Rafique

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: point defect; crystal lattice; interstitial; austenitic; stabilization; superalloys

Online: 11 January 2023 (09:00:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints201808.0458.v1

A Robust Control of Two-Stage Grid-Tied PV Systems Employing Integral Sliding Mode Theory

Abbas Kihal, Fateh Krim, Billel Talbi, Abdelbaset Laib, Abdeslem Sahli

Subject: Engineering, Electrical And Electronic Engineering Keywords: grid-tied photovoltaic system; maximum power point tracking (MPPT); voltage oriented control (VOC); integral sliding mode control (ISMC)theory; dc-link control.

Online: 27 August 2018 (11:33:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0665.v1

Coupled Delft3D-Object Model to Predict Mobility and Burial of Munition on Sandy Floor

Peter C. Chu, Vinicius S. Pessanha, Chenwu Fan

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Delft3D; Object Mobility Model; Munitions Mobility and Burial; Object Shields Parameter; Sediment Shields Parameter; Equilibrium Burial Percentage; Sediment Supporting Point

Online: 28 June 2021 (14:24:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0195.v1

Random Fixed Point Theorems for Generalized Random α-ψ-contractive Mappings with Applications to Stochastic Differential Equation

Chayut Kongban, Poom Kumam, Juan Martinez-Moreno

Subject: Computer Science And Mathematics, Analysis Keywords: random fixed point, random $\alpha-$admissible with respect to $\eta$, generalized random $\alpha-\psi-$contractive mapping.

Online: 11 September 2018 (11:52:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0608.v1

Hyers-Ulam Stability of Lagrange's Mean Value Points in Two Variables

Soon-Mo Jung, Ji-Hye Kim

Subject: Computer Science And Mathematics, Analysis Keywords: Hyers-Ulam stability; mean value theorem; Lagrange's mean value point; two-dimensional Lagrange's mean value point

Online: 30 September 2018 (10:42:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0303.v1

Fixed Point Results for a New Class of Multi-Valued Mappings Under (θ; R)-Contractions With an Application

MD Hasanuzzaman Hasanuzzaman, Salvatore Sessa, Mohammad Imdad, W. M. Alfaqih

Subject: Computer Science And Mathematics, Analysis Keywords: fixed point; integral equation; binary relation

Online: 21 February 2020 (03:22:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints202109.0180.v1

MPCR-Net: Multiple Partial Point Clouds Registration Network Using a Global Template

Shijie Su, Chao Wang, Ke Chen, Jian Zhang, Yang Hui

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: point cloud registration; template point cloud; multiple partial point cloud; deep learning

Online: 10 September 2021 (10:26:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0271.v1

A Heuristic Method for Certifying Isolated Zeros of Polynomial Systems

Jin-San Cheng, Xiaojie Dou

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: over-determined polynomial system; isolated zeros; minimum point; sum of squares; interval methods

Online: 16 July 2018 (10:15:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0251.v1

About the Accuracy and the Grid Convergence of the Numerical Solution of the Energy Equation in Fluid Film Lubrication

Silun Zhang, Mohamed-Amine Hassini, Mihai Arghir

Subject: Engineering, Mechanical Engineering Keywords: energy equation; numerical solution; Lobatto point quadrature; Legendre polynomials

Online: 14 September 2018 (04:42:42 CEST)

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Working Paper COMMUNICATION

Pressure Point Threshold Scores and ME/CFS Comorbidity as Indicators of Patient´s Response to Manual Physiotherapy in Fibromyalgia

Francisco Javier Falaguera-Vera, María Garcia-Escudero, Javier Bonastre-Férez, Mario Zacarés, Elisa Oltra

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: Fibromyalgia; Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS); Pressure Point Threshold (PPT); Physiotherapy; Manual Therapy (MT)

Online: 15 September 2020 (09:01:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0296.v1

Smartphone-Based Point-of-Care Cholesterol Blood Test Performance Evaluation Compared with a Clinical Diagnostic Laboratory Method

Kyongsik Yun, Jaekyu Choi, In-Uk Song, Yong An Chung

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: point-of-care; cholesterol; clinical diagnostics; laboratory test

Online: 26 July 2019 (01:13:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0277.v6

Stability Analysis of Nontrivial Stationary Solution and Constant Equilibrium Point of Reaction-Diffusion Neural Networks with Time Delays under Dirichlet Zero Boundary Value

Ruofeng Rao

Subject: Computer Science And Mathematics, Mathematics Keywords: reaction-diffusion; cellular neural networks; exponential stability; stationary solutions; Saddle point theorem

Online: 2 October 2020 (13:57:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0129.v1

Fibonacci-Mann Iteration for Monotone Asymptotically Nonexpansive Mappings in Modular Spaces

Buthinah A. Bin Dehaish, Mohamed A Khamsi

Subject: Computer Science And Mathematics, Analysis Keywords: Asymptotically nonexpansive mapping, Fibonacci sequence, fixed point, Mann iteration process, modular function spaces, monotone Lipschitzian mapping, Opial condition, uniformly convexity.

Online: 7 September 2018 (10:58:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202108.0272.v1

Remaining Useful Life Prediction from 3D Scan Data with Genetically Optimized Convolutional Neural Networks

Giovanni Diraco, Pietro Siciliano, Alessandro Leone

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: Remaining Useful Life; Deep Neural Network; Convolutional Neural Network; Genetic Optimization; Neural Network Optimization; Support Vector Regression; Depth Maps; Normal Maps; 3D Point Clouds.

Online: 12 August 2021 (10:40:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0521.v1

Phosphorus Budget for a Forested-Agricultural Watershed Influenced by East-Asian Summer Monsoon

Arif Reza, Jaesung Eum, Sungmin Jung, Youngsoon Choi, Changwon Jang, Kiyong Kim, Jeffrey S. Owen, Bomchul Kim

Subject: Environmental And Earth Sciences, Environmental Science Keywords: phosphorus; nutrient budget; non-point source pollution; Korea; monsoon climate

Online: 21 November 2018 (07:28:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints202204.0203.v1

The Nonlinear Analysis Related to Schauder Fixed Points, Best Approximation, Birkhoff-Kellogg Problems and Principle of Leray-Schauder Alternatives in p-Vector Spaces

George X. Yuan

Subject: Computer Science And Mathematics, Analysis Keywords: nonlinear analysis; best approximation; Birkhoff-Kellogg theorem; schauder conjecture; fixed point theorem; nonlinear alternative; Leray-Schauder alternative; p-convex; p-inward and p-outward set; p-vector space

Online: 21 April 2022 (10:22:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0269.v1

The System of Differential Equations Associated With Involutions

Farrukh Nuriddin ugli Dekhkonov

Subject: Computer Science And Mathematics, Mathematics Keywords: Involution; linear differential equation; fixed point; boundary value problem

Online: 15 September 2021 (15:19:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0126.v1

Roach Infestation Optimization MPPT Algorithm for Solar Photovoltaic System

Chittaranjan Pradhan, Nicholas Kakra Ntiakoh, Rajnish Kaur Calay

Subject: Engineering, Electrical And Electronic Engineering Keywords: DC-DC Boost converter; Maximum power point tracking (MPPT); Partial shading condition (PSC); Particle swam optimization (PSO); Roach infestation optimization (RIO); Solar photovoltaic system

Online: 9 February 2022 (07:59:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202203.0278.v1

Usefulness of Multi-Organ Point-Of-Care Ultrasound as a Complement to the Decision-Making Process in Internal Medicine

Irene Casado-López, Yale Tung-Chen, Marta Torres-Arrese, Davide Luordo-Tedesco, Arantzazu Mata-Martínez, Jose Manuel Casas-Rojo, Esther Montero-Hernández, Gonzalo García De Casasola-Sánchez

Subject: Medicine And Pharmacology, Internal Medicine Keywords: point-of-care ultrasound; internal medicine; lung ultrasound; echocardiography; abdominal ultrasound

Online: 21 March 2022 (08:39:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0161.v1

Understanding the Nature of the Long–Range Memory Phenomenon in Socio–Economic Systems

Rytis Kazakevičius, Aleksejus Kononovicius, Bronislovas Kaulakys, Vygintas Gontis

Subject: Physical Sciences, Condensed Matter Physics Keywords: long–range memory; 1/f noise; absolute value estimator; anomalous diffusion; ARFIMA; first–passage times; fractional Lèvy stable motion; Higuchi’s method; Mean squared displacement; multiplicative point process

Online: 6 August 2021 (11:22:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0002.v1

Hospitalist Perceptions of Barriers to Lung Ultrasound Adoption in Diverse Hospital Environments

Anna M. Maw, P. Michael Ho, Megan A. Morris, Russell E. Glasgow, Amy G. Huebschmann, Juliana G. Barnard, Robert Metter, David M. Tierney, Benji K. Mathews, Edward P. Havranek, Mark Kissler, Michelle Fleshner, Barbra K. Burian, Elke Platz, Nilam J. Soni

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: lung ultrasound; implementation science; point of care ultrasound

Online: 1 July 2021 (07:43:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0025.v1

Simulation of Flow and Agricultural Non-Point Source Pollutant Transport in a Tibetan Plateau Irrigation District

Yuqing Li, Zuhao Zhou, Kang Wang, Chongyu Xu

Subject: Environmental And Earth Sciences, Environmental Science Keywords: irrigation zone; Tibetan Plateau; non-point source pollution; Sobol’ sensitivity analysis; subsurface lateral flow

Online: 3 December 2018 (13:48:44 CET)

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Flow and transport processes in soil and rock play a critical role in agricultural non-point source pollution (ANSP) loads. In this study, we investigated the ANPS load discharged into rivers from an irrigation district in the Tibetan Plateau, and simulated ANPS load using a distributed model involving detailed descriptions of flow and ANPS transport and transformation processes in the soil and rock. Experiments were conducted for two years to measure soil water content and nitrogen concentrations and the quality and quantity of lateral flow in the rock and at the drainage canal outlet during the highland barley growing period. A distributed model, in which the subsurface lateral flow was described using a step-wise method, was developed to simulate flow and ammonium nitrogen and nitrate nitrogen transport. Sobol’s method was used to evaluate the sensitivity of simulated flow and transport processes to model inputs. The results showed that, with a 21.2% increase of rainfall and irrigation in the highland barley growing period, the average NH4+-N and NO3--N concentrations in the soil layer decreased by 10.8% and 14.3%, respectively, due to increased deep seepage. Deep seepage of rainfall water accounted for 0–52.4% of total rainfall, whereas deep seepage of irrigation water accounted for 36.6–45.3% of total irrigation. NH4+-N and NO3--N discharged into the drainage channel represented 19.9–30.4% and 19.4–26.7% of the deep seepage, respectively. The mean Nash-Sutcliffe coefficients, root mean square errors, and cumulative deviations between the measured and simulated flow rates and NH4+-N and NO3--N concentrations at the surface drainage canal outlet were 0.694, 0.081, and 0.242, respectively, indicating that the proposed method can effectively describe the hydrological and ANPS pollution migration in the plateau irrigation zone. The Sobol’ sensitivity analysis results demonstrated that subsurface lateral flow had the most important first order and total effect on the simulated flow and NH4+-N and NO3--N concentrations at the surface drainage outlet.

Preprint REVIEW | doi:10.20944/preprints201812.0295.v1

Vortex Interactions Subjected to Deformation Flows: A Review

Konstantin V. Koshel, Eugene A. Ryzhov, Xavier J. Carton

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: flow; deformation flow; point vortex; elliptic vortex; chaotic dynamics; parametric instability; stability islands

Online: 25 December 2018 (05:15:51 CET)

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Preprint ARTICLE | doi:10.20944/preprints202109.0424.v1

Microfluidic Lab-On-a-Chip based on UHF-Dielectrophoresis for Stemness Phenotype Characterization and Discrimination among Glioblastoma Cells

Elisa Lambert, Rémi Manczak, Elodie Barthout, Sofiane Saada, Elena Porcù, Francesca Maule, Barbara BESSETTE, Giampietro Viola, Luca Persano, Claire DALMAY, Fabrice Lalloué, Arnaud POTHIER

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: high frequency dielectrophoresis; glioblastoma cells; single cell manipulation; microfluidic point-of-care device; cancer stem cells

Online: 24 September 2021 (11:11:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0293.v1

Dissipation of Momenergy to a Bose Gas by an Electromagnetic Propulsion Device

Remi Cornwall

Subject: Physical Sciences, Quantum Science And Technology Keywords: 2nd Law; Thermodynamics; Quantum mechanics; Zero-point

Online: 20 February 2020 (08:02:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0447.v1

Optimal IP Current Controller Design Based on Small Signal Stability for THD Reduction of High-Power Density PFC Boost Converter

Ahmed H. Okilly, Jeihoon Baek

Subject: Engineering, Automotive Engineering Keywords: CCM-PFC; small signal model; IP controller; zero-crossing point; total harmonic distortion (THD); power factor (P.F); isolated voltage sensors

Online: 17 November 2020 (11:47:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0277.v1

On the Influence of Center-Lipschitz Conditions in the Convergence Analysis of Multi-Point Iterative Methods

Ioannis K Argyros, Santhosh George

Subject: Computer Science And Mathematics, Analysis Keywords: Multi-point iterative methods; Banach space; local-semi-local convergence analysis.

Online: 24 December 2018 (12:37:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0113.v1

Usefulness of Serial Multiorgan Point-of-Care Ultrasound in Acute Heart Failure: Results from a Prospective Observational Cohort

Marta Torres-Arrese, Gonzalo García de Casasola-Sánchez, Manuel Méndez-Bailón, Esther Montero-Hernández, Marta Cobo-Marcos, Mercedes Rivas-Lasarte, Luis Caurecel-Díaz, Pablo Rodríguez-Fuertes, Tomas Villén-Villegas, Yale Tung-Chen

Subject: Medicine And Pharmacology, Cardiac And Cardiovascular Systems Keywords: acute heart failure (AHF); venous congestion; Point-of-Care Ultrasound (POCUS); VExUS (venous excess ultrasonography score).

Online: 7 December 2021 (23:46:59 CET)

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Background and Objectives: Acute Heart Failure (AHF) is a common disease and a cause of high morbidity and mortality, constituting a major health problem. The main purpose of this study was to determine the impact of multiorgan ultrasound in identifying the pulmonary hypertension (PH) in patients admitted due to AHF, predict the evolution of the disease during hospitalization and identify areas of improvement in the care of patients with AHF. Materials and Methods: Patients were evaluated with a standard exam of lung ultrasound, echocardiography, inferior vena cava (IVC) and femoral, renal, hepatic, portal venous Doppler flow patterns at admission and on the day of discharge. Results: Thirty patients were enrolled during November 2021. The mean age was seventy-nine years (Standard Deviation – SD 13,4). Seven patients (23.3%) had a renal function worsening. Regarding ultrasound findings, venous excess ultrasonography score (VExUS) score was calculated at admission and at discharge, surprisingly remaining unchanged or even worsened in most of them (21 patients, 70.0%). The area under the curve for the Lung Score was 83.9% (p = 0.008), obtaining a cutoff value of 10 that showed a sensitivity of 82.6% and a specificity of 71.4% in the identification of intermediate and high PH. It was possible to monitor significant changes between both exams on the lung score (p <0.001), hepatic vein Doppler (p <0.001), portal vein Doppler (p = 0.030), intra-renal vein Doppler (p = 0.025) and VExUS score (p = 0.023), remaining similar the femoral vein Doppler (p = 0.177) and IVC (p = 0.132). Conclusions: Our study results suggest that performing serial multiorgan Point-of-Care ultrasound can help us to better identify high and intermediate probability of PH patients with AHF. Currently proposed multi-organ, venous Doppler scanning protocols, such as the VExUS score, should be further studied in different populations before expanding its use in AHF patients.

Preprint ARTICLE | doi:10.20944/preprints202108.0029.v1

θ∗-Weak Contractions and Discontinuity at the Fixed Point With Applications to Matrix and Integral Equations

Atiya Perveen, Waleed Alfaqih, Salvatore Sessa, Mohammad Imdad

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: θ∗-weak contraction; fixed point; discontinuity at the fixed point; property P; matrix equation; integral equations

Online: 2 August 2021 (12:21:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0549.v1

The Ascendency of Numerical Methods in Lens Design

Donald C. Dilworth

Subject: Physical Sciences, Optics And Photonics Keywords: lens design; numerical methods; DLS; PSD III; global optimization; saddle-point method

Online: 24 October 2018 (05:46:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0569.v1

Multiplex Recombinase Polymerase Amplification Assay for Simultaneous Detection of Treponema pallidum and Haemophilus ducreyi in yaws-like lesions

Michael Frimpong, Shirley Victoria Simpson, Hubert Senanu Ahor, Abigail Agbanyo, Solomon Gyabaah, Bernadette Agbavor, Ivy Brago Amanor, Kennedy Kwasi Addo, Susanne Böhlken-Fascher, Jonas Kissenkötter, Ahmed Abd El Wahed, Richard Odame Phillips

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Recombinase polymerase amplification; Treponema pallidum; Haemophilus ducreyi; Molecular diagnostics; Point-of-care test

Online: 26 August 2020 (09:01:07 CEST)

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Preprint REVIEW | doi:10.20944/preprints201811.0630.v1

Explaining Defects of the Universal Vacua with Black Holes-Hedgehogs and Strings

C.R. Das, L.V. Laperashvili, H.B. Nielsen, B.G. Sidharth

Subject: Physical Sciences, Particle And Field Physics Keywords: hedgehogs; topological defects; multiple point principle

Online: 30 November 2018 (10:23:29 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0222.v1

From LiDAR waveforms to Hyper Point Clouds: a novel data product to characterize vegetation structure

Tan Zhou, Sorin Popescu, Lonesome Malambo, Kaiguang Zhao, Keith Krause

Subject: Environmental And Earth Sciences, Environmental Science Keywords: hyper point cloud (HPC); HPC-based intensity surface; percentile height; gridding; full waveform LiDAR; tree segmentation; vegetation structure

Online: 8 November 2018 (14:56:35 CET)

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Full waveform (FW) LiDAR holds great potential for retrieving vegetation structure parameters at a high level of detail, but this prospect is constrained by practical factors such as lack of available handy processing tools and technical intricacy of waveform processing. This study introduces a new product, named the Hyper Point Cloud (HPC) derived from FW LiDAR data, and explore its potential applications such as tree crown delineation using the HPC-based intensity and percentile height (PH) surfaces, which show a promising solution to the constraints of using FW LiDAR data. Results of the HPC present a new direction to handle FW LiDAR data and offer prospects for studying the mid-story and understory of vegetation with high point density (~ 182 points/m2). The intensity-derived digital surface model (DSM) generated from the HPC shows that the ground region has larger maximum intensity (MAXI) and mean intensity (MI) than the vegetation region while having smaller total intensity (TI) and number of intensities (NI) at the given grid cell. Our analysis of intensity distribution contours at individual tree level exhibit similar patterns, indicating that the MAXI and MI are decreasing from the tree crown center to tree boundary while a rising trend is observed for TI and NI. These intensity variable contours provide a theoretical justification for using HPC-based intensity surfaces to segment tree crowns and exploit their potential for extracting tree attributes. The HPC-based intensity surfaces and the HPC-based PH Canopy Height Models (CHM) demonstrate promising tree segmentation results comparable to the LiDAR derived CHM for estimating tree attributes such as tree locations, crown widths and tree heights. We envision that products such as the HPC and the HPC-based intensity and height surfaces introduced in this study can open new perspectives to use FW LiDAR data and alleviate the technical barrier of exploring FW LiDAR data for detailed vegetation structure characterization.

Preprint ARTICLE | doi:10.20944/preprints202108.0078.v1

Modeling Insolation, Multi-spectral Imagery and LiDAR Point-cloud Metrics to Predict Plant Diversity in a Temperate Montane Forest

Paul Christian Dunn, Leonhard Blesius

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: biodiversity; insolation, biogeography; lidar; point-cloud; multi-spectral imagery; spatial prediction model; forest canopy

Online: 3 August 2021 (13:05:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202112.0044.v1

Linear Quadratic Regulator and Fuzzy Control for Grid-Connected Photovoltaic Systems

Azamat Mukhatov, Nguyen Gia Minh Thao, Ton Duc Do

Subject: Engineering, Electrical And Electronic Engineering Keywords: fuzzy control; grid-connected; incremental conductance algorithm; linear quadratic regulator; maximum power point tracking; photovoltaic system

Online: 3 December 2021 (09:49:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202001.0331.v1

Self-Perception of Dependence as an Indicator of Smartphone Addiction. Establishment of a Cut-off Point in the SPAI-SP Inventory

Maria Luisa Ballestar-Tarin, Conchin Simo-Sanz, Elena Chover-Sierra, Carlos Saus-Ortega, Maria del Carmen Casal Angulo, Antonio Martínez-Sabater

Subject: Medicine And Pharmacology, Psychiatry And Mental Health Keywords: smartphones; addiction; self-perceived addiction; ROC analysis; cutoff point; SPAI-Spain

Online: 28 January 2020 (05:06:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0124.v1

Vectorial Variational Inequalities on Hadamard Manifolds: A Tool to Achieve Efficient Approximate Solutions

Gabriel Ruiz-Garzón, Rafaela Osuna-Gómez, Antonio Rufián-Lizana, Beatriz Hernández-Jiménez

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Generalized convexity; Hadamard manifold; Approximate efficient solution; Stackelberg equilibrium point

Online: 7 December 2020 (07:09:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202203.0375.v1

Rapid Detection of Anti-SARS-CoV-2 Antibodies With a Screen-Printed Electrode Modified With a Spike Glycoprotein Epitope

Wiilson Ameku, David Provance, Carlos Morel, Salvatore De-Simone

Subject: Biology And Life Sciences, Virology Keywords: SARS-CoV-2; COVID-19; spike glycoprotein; epitope; electrochemical biosensor; point of care; immunological diagnostic

Online: 29 March 2022 (08:39:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0314.v1

The Coronavirus Disease 2019 Spatial Care Path: Home, Community, and Emergency Diagnostic Portals

Gerald J. Kost

Subject: Medicine And Pharmacology, Pathology And Pathobiology Keywords: Emergency Use Authorization; endemic; false omission; false omission rate; home testing; point-of-care testing (POCT); positive predictive value geometric mean-squared; prevalence boundary; recursive protocol; tier; visual logistics

Online: 30 April 2022 (08:42:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0446.v1

Point-of-Care Testing, Spatial Care Paths, and Enhanced Standards of Care – Preparing Island Communities for Global Warming and Rising Oceans

Gerald Kost, Anna Fuzery, Louie Caratao, Samantha Tinsay, Amanullah Zadran, Adrian Ybanez

Subject: Public Health And Healthcare, Nursing Keywords: acute myocardial infarction; coronavirus disease 2019 (COVID-19); island communities; point-of-care testing; spatial care paths

Online: 28 October 2022 (09:30:44 CEST)

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Working Paper ARTICLE

Large Deviations and Information theory for Sub-Critical SINR Randon Network Models

Enoch Sakyi-Yeboah, Pepertual Saah Andam, Louis Asiedu, Kwabena Doku-Amponsah

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Large deviation principle; Sub-critical SINR random network model; Poisson point process; Empirical power measure; Empirical connectivity measure; Relative entropy; Kullback action

Online: 13 April 2021 (09:17:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0774.v1

A model free control based on machine learning for energy converters in an array

Simon Thomas, Marianna Giassi, Mikael Eriksson, Malin Göteman, Jan Isberg, Edward Ransley, Martyn Hann, Jens Engström

Subject: Engineering, Control And Systems Engineering Keywords: machine learning; wave energy; power take-off; artificial neural network; wave tank test; physical scale model; floating point absorber; damping; control; collaborative

Online: 2 November 2018 (12:35:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0266.v1

Pan-Cancer Integrative Analysis of Whole-Genome De novo Somatic Point Mutations Reveals 17 Cancer Types

Amirreza Kazemi, Amin Ghareyazi, Kimia Hamidieh, Hamed Dashti, Maedeh Tahaei, Hamid Rabiee, Hamid Alinejad Rokny, Abdollah Dehzangi

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: Pan-Cancer; somatic point mutations; cancer subtyping; biomarker discovery; driver genes; per-sonalized medicine; health data analytics

Online: 15 November 2021 (13:51:33 CET)

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The advent of high throughput sequencing has enabled researchers to systematically evaluate the genetic variations in cancer, resulting in identifying many cancer-associated genes. Although cancers in the same tissue are widely categorized in the same group, they demonstrate many differences concerning their mutational profiles. Hence there is no “silver bullet” for the treatment of a cancer type. This reveals the importance of developing a pipeline to identify cancer-associated genes accurately and re-classify patients with similar mutational profiles. Classification of cancer patients with similar mutational profiles may help discover subtypes of cancer patients who might benefit from specific treatment types. In this study, we propose a new machine learning pipeline to identify protein-coding genes mutated in a significant portion of samples to identify cancer subtypes. We applied our pipeline to 12270 samples collected from the International Cancer Genome Consortium (ICGC), covering 19 cancer types. Here we identified 17 different cancer subtypes. Comprehensive phenotypic and genotypic analysis indicates distinguishable properties, including unique cancer-related signaling pathways, in which, for most of them, targeted treatment options are currently available. This new subtyping approach offers a novel opportunity for cancer drug development based on the mutational profile of patients. We also comprehensive study the causes of mutations among samples in each subtype by mining the mutational signatures, which provides important insight into their active molecular mechanisms. Some of the pathways we identified in most subtypes, including the cell cycle and the Axon guidance pathways, are frequently observed in cancer disease. Interestingly, we also identified several mutated genes and different rates of mutation in multiple cancer subtypes. In addition, our study on “gene-motif” suggests the importance of considering both the context of the mutations and mutational processes in identifying cancer-associated genes. The source codes for our proposed clustering pipeline and analysis are publicly available at: https://github.com/bcb-sut/Pan-Cancer.

Preprint ARTICLE | doi:10.20944/preprints201809.0198.v1

On p-common Best Proximity Point Results for S-weakly Contraction in Complete Metric Spaces

Chayut Kongban, Somayya Komal, Poom Kumam

Subject: Computer Science And Mathematics, Analysis Keywords: P-common best proximity point, weak Pp-property, S-weakly contraction.

Online: 11 September 2018 (12:26:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0381.v1

Kernel Complexity for Nonparametric Distributions and Detection of Its Changes

So Hirai, Kenji Yamanishi

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: change-point detection; kernel density estimation; normalized maximum likelihood (NML); minimum description length (MDL) principle; kernel complexity (KC)

Online: 3 December 2019 (03:34:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0086.v1

Monolithic Solvers for Incompressible Two-Phase Flows at Large Density and Viscosity Ratios

Mohamed EL OUAFA, stephane vincent, Vincent Le Chenadec

Subject: Engineering, Automotive Engineering Keywords: Velocity–pressure coupling; Fully coupled solvers; Augmented Lagrangian; two-phase flows; saddle point; projection method; preconditioning; smooth VOF

Online: 3 December 2020 (13:50:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202004.0056.v1

Mass in de Sitter and Anti-de-Sitter Universes with Regard to Dark Matter

Jean-Pierre Gazeau

Subject: Physical Sciences, Nuclear And High Energy Physics Keywords: de Sitter; Anti de Sitter; group representation; hadronization; dark matter; zero-point energy; quark-gluon plasma; critical point

Online: 6 April 2020 (12:45:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0055.v1

The Effect of Swinging Ball Heads with Different Arrangements in Multi-Point Stretch Forming Process

Jian Xing, Yan-yan Cheng, Zhuo Yi

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: multi-point die; stretch forming; swinging ball head; numerical simulation

Online: 8 January 2019 (09:09:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0125.v1

Research on Retailer Pricing Based on Extended Regret Theory in E-commerce Environment

Ge Qiu

Subject: Business, Economics And Management, Econometrics And Statistics Keywords: Retailers’ Optimal Pricing Strategy; Expected Utility Theory (EUT); Regret Theory; Regret Reference Point; Price-dependent Demand

Online: 5 November 2018 (15:46:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints202107.0646.v2

Constraints on General Relativity Geodesics by a Covariant Geometric Uncertainty Principle

David Escors, Grazyna Kochan

Subject: Physical Sciences, Quantum Science And Technology Keywords: General relativity; Uncertainty principle; Geodesics; Black hole singularity; zero-point energy

Online: 2 August 2021 (13:38:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201912.0364.v1

Electrical Characterization of CIGS Thin Film Solar Cells by Two and Four-Wires Probe Technique

Amir Mosavi, Bertalan Beszedes, Imre Felde, Laszlo Nadai, Nima E Gorji

Subject: Physical Sciences, Optics And Photonics Keywords: CIGS solar cell; Cascade; current conduction; thin film; two and four-point probe

Online: 27 December 2019 (10:37:53 CET)

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Working Paper ARTICLE

MPPT Circuit Using Time Exponential Rate Perturbation and Observation for Enhanced Tracking Efficiency for a Wide Resistance Range of Thermoelectric Generator

Jie Miao, Houpeng Chen, Yu Lei, Yi Lv, Weili Liu, Zhitang Song

Subject: Engineering, Automotive Engineering Keywords: maximum power point tracking (MPPT); thermoelectric generator (TEG); time exponential rate perturbation and observation (P&O); power modulator

Online: 19 April 2021 (13:26:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202001.0232.v1

The Stability of a General Sextic Functional Equation by Fixed Point Theory

Yang-Hi Lee, Soon-Mo Jung, Jaiok Roh

Subject: Computer Science And Mathematics, Analysis Keywords: sextic mapping; general sextic functional equation; fixed point theory method; generalized Hyers-Ulam stability

Online: 21 January 2020 (06:41:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0325.v1

Modular Uniform Convexity of Lebesgue Spaces of Variable Integrability

Mostafa Bachar, Osvaldo Mendez, Messaoud Bounkhel

Subject: Computer Science And Mathematics, Analysis Keywords: Fixed point theorem, modular uniform convexity, modular vector spaces, Nakano spaces, uniform convexity, variable exponent spaces.

Online: 14 November 2018 (08:15:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202110.0249.v1

Predictive Model of ACC Speed to Enhance Engine Operating Conditions

Srikanth Kolachalama, Hafiz Malik

Subject: Engineering, Automotive Engineering Keywords: Adaptive Cruise Control; Driver behvaiour; Deep learning; Engine Operating Point; NARX

Online: 18 October 2021 (14:48:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0117.v1

Algebras and Smarandache Types

Hee Sik Kim, J. Neggers, Sun Shin Ahn

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Smarandache algebra; point algebra; $p$-derived algebra.

Online: 5 November 2018 (12:53:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0366.v1

Cut-and-Project Schemes for Pisot Family Substitution Tilings

Jeong-Yup Lee, Shigeki Akiyama, Yasushi Nagai

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: Pisot substitution tilings; pure point spectrum; regular model set; algebraic coincidence

Online: 19 September 2018 (07:44:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0354.v1

Improve Building Façades in Open Lidar Data Using Ground Imagery

Shenman Zhang, Pengjie Tao

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: open LiDAR; terrestrial images; building reconstruction; point cloud registration

Online: 16 October 2018 (11:20:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0176.v1

On the Solutions of Nonlinear Hybrid Fractional Integrodifferential Equations

Faten H. Damag, Adem Kılıçman, Awsan T. Al-Arioi

Subject: Computer Science And Mathematics, Analysis Keywords: hybrid fractional integrodifferential equation; hybrid fixed point theorems of Dhage; approximations solutions; Lipschitz conditions; weaker mixed partial continuity

Online: 14 February 2020 (02:12:02 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0309.v1

Highly Accurate and Fully Automatic 3–D Head Pose Estimation and Eye Gaze Estimation Using RGB-–D Sensors and 3D Morphable Models

Reza Shoja Ghiass, Denis Laurendeau

Subject: Computer Science And Mathematics, Computer Science Keywords: 3–D morphable models; 3–D head pose estimation; 3–D eye gaze estimation; iterative closest point; RGB–D sensors

Online: 15 October 2018 (12:38:49 CEST)

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Working Paper ARTICLE

Lateral Flow Serodiagnosis in the Double-Antigen Sandwich Format: Theoretical Consideration and Confirmation of Advantages

Dmitriy Sotnikov, Anatoly Zherdev, Boris Dzantiev

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: point-of-care assay; membrane tests; immunochromatography; lateral flow immunoassay; immune response; detection of antibodies; antigen-antibody reactions; mathematical modelling; assay sensitivity; limit of detection

Online: 20 November 2020 (10:50:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints202009.0206.v1

Fixed Circle and Fixed Disc Results for New Type of Qc-Contractive Mappings in Metric Spaces

Salvatore Sessa, Hayel N. Saleh, Waleed M. Alfaqih, Mohammad Imdad, Nabil Mlaiki

Subject: Computer Science And Mathematics, Mathematics Keywords: fixed point; fixed circle; fixed disc; Qc-contractions

Online: 9 September 2020 (10:45:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202111.0262.v1

Reduction of DC-drift in LiNbO3-based Electro-optical Modulator

Aleksei V. Sosunov, Roman S. Ponomarev, Anton A. Zhuravlev, Sergey S. Mushinsky, Mariana Kuneva

Subject: Physical Sciences, Optics And Photonics Keywords: lithium niobate; electro-optical modulator; DC-drift; operating point

Online: 15 November 2021 (13:37:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202005.0046.v1

New Fixed Point Results via (q,y)R-Weak Contractions with an Application

Mohammad Imded, Based Ali, Waleed M. Alfaqih, Salvatore Sessa

Subject: Computer Science And Mathematics, Mathematics Keywords: fixed point; q-contraction; binary relation; integral equation

Online: 4 May 2020 (02:54:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0269.v1

Analytical Derivations of Critical Temperatures in Every Type of Fe-Based Superconductors Based on Two Electrons’ Rotational Model

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: Fe-based superconductor; critical temperature; transition temperature; attractive Lorentz force; Tc-dome diagram; structure transition; quantum critical point

Online: 18 July 2022 (11:03:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202011.0715.v1

Experimental Study on the Fracture Parameters of Concrete

Zhanqiao Wang, Jin Gou, Danying Gao

Subject: Chemistry And Materials Science, Biomaterials Keywords: steel fiber; three-point bending; fracture parameters; gain ratio

Online: 30 November 2020 (10:58:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints202003.0281.v1

On Approximation Methods in Some Geodesic Spaces without the Nice Projection Property

Pongsakorn Yotkaew

Subject: Computer Science And Mathematics, Mathematics Keywords: Browder's type iteration; CAT(1) space; fixed point; Halpern's type iteration; Moudafi's viscosity type method; nonexpansive mapping

Online: 17 March 2020 (16:15:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints201912.0360.v1

Separation Axioms Interval-Valued Fuzzy Soft Topology via Quasi-Neighbourhood Structure

Mabruka Ali, Adem Kılıçman, Azadeh Zahedi Khameneh

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: interval-valued fuzzy soft set; interval-valued fuzzy soft topology; interval-valued fuzzy soft point; interval-valued fuzzy soft neighborhood; interval-valued fuzzy soft quasi-neighbourhood; interva

Online: 27 December 2019 (08:44:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0297.v1

Linear Regression Analysis for Time-Point Datasets

Janardan Patil, Li Len, Abhinav Bharat, Xi Li

Subject: Computer Science And Mathematics, Mathematics Keywords: regression; time point data; modelling

Online: 10 November 2020 (10:00:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0263.v1

Scaling of Phase Diagram and Critical Point Parameters in Liquid-Vapour Phase Transition of Metallic Fluids

S.V.G. Menon

Subject: Physical Sciences, Acoustics Keywords: Liquid-vapour phase transition; metals; thermodynamic perturbation theory; coupling-parameter expansion; critical point parameters; universal aspects; scaled variables.

Online: 10 December 2020 (13:40:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202010.0072.v1

A Probabilistic Approach for Optimal Design of Indoor Positioning Systems

Bráulio Henrique O. U. V. Pinto, Horácio A. B. F. de Oliveira, Eduardo Souto

Subject: Computer Science And Mathematics, Information Systems Keywords: indoor positioning; access point placement; path loss model; optimization

Online: 5 October 2020 (11:34:03 CEST)

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Preprint REVIEW | doi:10.20944/preprints202111.0090.v2

Why and How to Use the Body’s Own Stem Cells for Regeneration in Musculoskeletal Disorders: A Primer

John Furia, Mark Lundeen, Jason Hurd, David Pearce, Christopher Alt, Eckhard Alt, Christoph Schmitz, Nicola Maffulli

Subject: Medicine And Pharmacology, Orthopedics And Sports Medicine Keywords: adipose-derived regenerative cells; ADRCs; adipose-derived stem cells; ADSCs; bone regeneration, cartilage regeneration; efficacy; point of care treatment; stem cell; tendon healing without scar formation; tendon regeneration; vaPS cells

Online: 12 November 2021 (11:44:31 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/preprints202302.0320.v2

Evaluation of a Novel Methodology for Real-Time Calculation of Critical Blood Values Based on Four Measured Values

Rüdiger H. Ettrich, Joshua Caballero, Sultan Ahmed, Traci Hurlston, Jayesh Parmar, Subrata Deb

Subject: Medicine And Pharmacology, Hematology Keywords: non-invasive; point-of-care testing; blood values; Radial arterial blood; blood gas; transcutaneous; algorithm

Online: 4 May 2023 (03:07:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202011.0009.v1

Pathological Test Type and Chemical Detection Using Deep Neural Networks: A Case Study Using ELISA and LFA Assays

Marzia Hoque Tania, M. Shamim Kaiser, Kamal J. Abu-Hassan, M A Hossain

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Computer Vision; Machine Learning; Colourimetric Test; Pre-trained Model; Point-of-Care System; Diagnosis

Online: 2 November 2020 (09:56:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0361.v1

3D Scattering Imaging of Multiscale Geological Media on the Base of Revised Version of Exploding Reflectors

Evgeny Landa, Galina Reshetova, Vladimir Tcheverda

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: Common Middle Point; Propagator; Spatial Reflector; small-scale heterogeneities; diffraction/scattering imaging; finite-difference simulation; local grid refinement in time and space.

Online: 15 November 2018 (11:18:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0285.v1

Inter-rater Variability in the Evaluation of Lung Ultrasound on Videos Acquired from COVID-19 Patients

Joaquin L. Herraiz, Clara Freijo, Jorge Camacho, Mario Muñoz, Ricardo González, Rafael Alonso-Roca, Jorge Álvarez-Troncoso, Luis Matías Beltrán-Romero, Máximo Bernabeu-Wittel, Rafael Blancas, Antonio Calvo-Cebrián, Ricardo Campo-Linares, Jaldún Chehayeb-Morán, Jose Chorda-Ribelles, Samuel García-Rubio, Gonzalo García-de-Casasola, Adriana Gil-Rodrigo, César Henríquez-Camacho, Alba Hernandez-Píriz, Carlos Hernandez-Quiles, Rafael Llamas-Fuentes, Davide Luordo, Raquel Marín-Baselga, María Cristina Martínez-Díaz, María Mateos-González, Manuel Mendez-Bailon, Francisco Miralles-Aguiar, Ramón Nogue, Marta Nogué, Borja Ortiz de Urbina-Antia, Alberto Ángel Oviedo-García, José M. Porcel, Santiago Rodriguez, Diego Aníbal Rodríguez-Serrano, Talía Sainz, Ignacio Manuel Sánchez-Barrancos, Marta Torres-Arrese, Juan Torres-Macho, Ángela Trueba-Vicente, Tomas Villen-Villegas, Juan José Zafra-Sánchez, Yale Tung-Chen

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: Coronavirus disease 2019; interobserver agreement; interrater reliability; lung ultrasound; point-of-care ultrasound; reliability; severe acute respiratory syndrome; ultrasound

Online: 15 November 2022 (09:57:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202207.0339.v1

Optimizing Public Health Preparedness for Highly Infectious Diseases in Central Vietnam

Amanullah Zadran, An V.D. Ho, Layma Zadran, Irene J Ventura Curiel, Tang-Tung Pham, Duong Thi Bich Thuan, Gerald J Kost

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: Infectious disease testing; public health preparedness; point-of-care testing (POCT); molecular diagnostics; therapeutic turnaround time (TTAT); acute medical challenges; geographic information systems; antimicrobial stewardship

Online: 22 July 2022 (13:13:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202112.0192.v1

Using Enhanced Sparrow Search Algorithm-Deep Extreme Learning Machine Model to Forecast End-Point Phosphorus Content of BOF

Lingxiang Quan, Ailian Li, Guimei Cui, Shaofeng Xie

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: End-point phosphorus content; Deep extreme learning machine; Sparrow search algorithm; Trigonometric substitution; Cauchy mutation

Online: 10 December 2021 (15:04:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202102.0197.v1

Stability and Stabilization of Ecosystem for Epidemic Virus Transmission Under Neumann Boundary Value Via Impulse Control

Ruofeng Rao

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Neumann boundary value; positive equilibrium point; Poincare inequality lemma; impulse control

Online: 8 February 2021 (12:05:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0489.v1

Nighttime Sleep Awakening Frequency and Its Consistency Predict Future Academic Performance in College Students

Ghee Wee Ho, Zhenzhi Yang, Linna Xing, Ken Kang-Too Tsang, Huada Daniel Ruan, Yu Li

Subject: Social Sciences, Psychology Keywords: sleep; academic performance; grade point average; college students; wearable device; longitudinal; nighttime sleep awakening

Online: 30 December 2021 (13:45:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202206.0300.v1

Multi-View and Shift Rasterization Algorithm (MVSR) for Effective Identification of Ground in Dense Point Clouds

Martin Štroner, Rudolf Urban, Lenka Línková

Subject: Engineering, Control And Systems Engineering Keywords: Point cloud; Ground filtering; Classification

Online: 22 June 2022 (03:37:45 CEST)

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With the ever-increasing popularity of unmanned aerial vehicles and other platforms providing dense point clouds, universal filters for accurate identification of ground points in such dense clouds are needed. Many filters have been proposed and are widely used, usually based on the determination of an original surface approximation and subsequent identification of points within a predefined distance from such surface. In this paper, we present a new filter. This Multi-view and shift rasterization algorithm (MVSR) is based on an entirely different principle, i.e., on the identification of just the lowest points in individual grid cells, shifting the grid along both planar axis and subsequent tilting of the entire grid – after each of these steps, one lowest point per cell is detected. The principle is presented in detail and compared both visually and numerically to other commonly used ground filters (PMF, SMRF, CSF, ATIN) on three sites with different ruggedness and vegetation density. Visually, the MVSR filter showed the smoothest and thinnest ground profiles, with ATIN the only filter performing comparably (although the profiles were somewhat thicker and not as complete as MVSR-acquired ground). The same was confirmed when comparing ground filtered by other filters with the MVSR-based surface. The goodness of fit with the original cloud is demonstrated by the root mean square deviations (RMSD) of the points from the original cloud found below the MVSR-generated surface (ranging, depending on site, between 0.6-2.5 cm). ATIN again performed closest to MVSR, with RMSDs of ground filtered points found above MVSR-based surface at individual sites ranging between 4.5-7.4 cm. The remaining filters performed comparable in the simplest flat area but poorly in rugged and much-vegetated sites, with RMSDs above the MVSR surface ranging at such sites from 21 to 95 cm. In conclusion, the novel filter presented in this paper performed outstandingly at all sites, identifying the ground points with great accuracy while filtering out the maximum of vegetation/above-ground points. The filter dilutes the cloud somewhat; in such dense point clouds, however, this can be perceived rather as a benefit than as a disadvantage.

Preprint ARTICLE | doi:10.20944/preprints202305.0058.v1

Comprehensive Review of Clustering and Multi-Target Tracking Techniques for LiDAR Point Clouds in Autonomous Driving Applications

Muhammad Adnan, Giulia Slavic, David Martín Gómez, Lucio Marcenaro, Carlo Regazzoni

Subject: Engineering, Control And Systems Engineering Keywords: Autonomous Vehicles (AVs); LiDAR (Light Detection and Ranging); Point Clouds; Clustering Algorithms; Multi-Target Tracking (MTT); Object Detection; Sensor Fusion; Deep Learning; 3D Point Cloud Segmentation

Online: 2 May 2023 (05:04:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0060.v1

Bending Analysis of Integrated Multilayer Corrugated Sandwich Panel Based on 3D Printing

Wen Dang, Xuanting Liu, Bohua Sun

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: multi-layer core corrugated sandwich panel; three-point bending; 3D printing; core shape; number of core layers

Online: 2 August 2022 (10:00:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0342.v1

Uniform Test on the Mixture Simplex Region

Haiqing Zhao, Guanghui Li, Junpeng Li

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: mixture experiments; lattice point sets; uniform designs

Online: 27 June 2022 (03:09:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1037.v1

Evaluation of Standard M10 Assay for Rapid Molecular Diagnosis of SARS-CoV-2, Influenza A/B virus and Respiratory Syncytial Virus (RSV)

Azwani Abdullah, I-Ching Sam, Yin Jie Ong, Chun Hao Theo, Muhammad Harith Pukhari, Yoke Fun Chan

Subject: Medicine And Pharmacology, Clinical Medicine Keywords: respiratory syncytial virus; influenza A virus; influenza B virus; SARS-CoV-2; rapid RT-PCR; diagnostic accuracy; point-of-care testing

Online: 15 September 2023 (05:38:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.2022.v1

3D Point Cloud Enriched Semantic Segmentation through Knowledge-Enhanced Deep Learning Technique

Zouhair Ballouch, Rafika Hajji, Abderrazzaq Kharroubi, Florent Poux, Roland Billen

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: smart fusion approach; enriched semantic segmentation; LiDAR point clouds; images data; data fusion; prior knowledge; deep learning; urban environment

Online: 29 June 2023 (05:41:26 CEST)

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Digital Twin Cities (DTCs) play a fundamental role in city planning and management. They allow three-dimensional modeling and simulation of cities. 3D semantic segmentation is the foundation for automatically creating enriched DTCs, as well as their updates. Past studies indicate that prior level fusion approaches demonstrate more promising precisions in 3D semantic segmentation compared to point level fusion, features level fusion, and decision level fusion families. In order to improve point cloud enriched semantic segmentation outcomes, this article proposes a new approach for 3D point cloud semantic segmentation through developing and benchmarking three prior level fusion scenarios. A reference approach based on point clouds and aerial images was proposed to compare it with the different developed scenarios. In each scenario, we inject a specific prior knowledge (geometric features,classified images ,etc) and aerial images as attributes of point clouds into the neural network’s learning pipeline. The objective is to find the one that integrates the most significant prior knowledge and enhances neural network knowledge more profoundly, which we have named the "smart fusion approach". The advanced Deep Learning algorithm "RandLaNet" was adopted to implement the different proposed scenarios and the reference approach, due to its excellent performance demonstrated in the literature. The introduction of some significant features associated with the label classes facilitated the learning process and improved the semantic segmentation results that can be achievable with the same neural network alone. Overall, our contribution provides a promising solution for addressing some challenges, in particular more accurate extraction of semantically rich objects from the urban fabric. An assessment of the semantic segmentation results obtained by the different scenarios is performed based on metrics computation and visual investigations. Finally,the smart fusion approach was derived based on the obtained qualitative and quantitative results.

Preprint ARTICLE | doi:10.20944/preprints202310.1120.v1

Non-Rigid Point Cloud Registration Using Piece-Wise Tricubic Polynomials as Transformation Model

Philipp Glira, Christoph Weidinger, Johannes Otepka-Schremmer, Camillo Ressl, Norbert Pfeifer, Michaela Haberler-Weber

Subject: Computer Science And Mathematics, Computer Vision And Graphics Keywords: pointcloud registration; iterative closest point; transformation; lidar

Online: 18 October 2023 (11:35:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0838.v1

Smartphone- and Cloud-based Artificial Intelligence Quantitative Analysis System (SCAISY) for SARS-CoV-2-specific IgG Antibody Lateral Flow Assays

Samir Kumar, Taewoo Ko, Yeonghun Chae, Ahyeon Lee, Sanghoon Shin, Myung-Hyun Nam, Byung Soo Kim, Hyun Sik Jun, Sungkyu Seo

Subject: Engineering, Bioengineering Keywords: Smartphone; Point-of-care testing; Lateral flow assay; Artificial intelligence; SARS-CoV-2; IgG antibody

Online: 24 April 2023 (09:17:22 CEST)

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