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Preprint REVIEW | doi:10.20944/preprints202209.0399.v1

Insights of Urban Density and Energy Consumption. A Bibliometric Correlation Analysis

Jiazhen Zhang, Li Peng, Sesil Koutra, Jon Teres-Zubiaga, Vincent Becue, Jeremy Cenci, Isabelle De Smet

Subject: Engineering, General Engineering Keywords: Bibliometric Analysis; Correlations; Energy consumption; Urban Density

Online: 26 September 2022 (11:39:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0341.v1

Performance Evaluation of Machine Learning Regressors for Estimating Real Estate House Prices

Marzieh Khosravi, Sadman Bin Arif, Ali Ghaseminejad, Hamed Tohidi, Hanieh Shabanian

Subject: Engineering, General Engineering Keywords: Real State; Regressors; Artificial Intelligence; Machine Learning; Data-informed; Boston

Online: 22 September 2022 (10:33:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0239.v1

Classification And Identification of Organic Matter in Black Soil Based on Simulated Annealing Optimization of LSVM-Stacking Model

Junlong Fang, Kezhu Tan, Zifang Zhang, Zhihua Liu, Hongzhao Xu, Qinghe Zhao

Subject: Engineering, General Engineering Keywords: Hyperspectral Technology; Non-destructive Testing; Black Soil; Ensemble learning; Support Vector Machine

Online: 16 September 2022 (07:40:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0503.v1

Experimental Investigation of the Novel Periodic Feed Pressure Technique in Minimizing Fouling during the Filtration of Oily Water Systems using Ceramic Membranes

Mohamed Echakouri, Amgad Salama, Amr Henni

Subject: Engineering, General Engineering Keywords: oily wastewater; ceramic membrane; fouling mitigation; fouling resistance; periodic feed pressure technique

Online: 30 August 2022 (04:01:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0097.v1

Acoustic Emission Monitoring of Atmospheric Corrosion on Aluminum Aircraft Structures at Varying Relative Humidity

Thomas Erlinger, Christoph Kralovec, Martin Schagerl

Subject: Engineering, General Engineering Keywords: acoustic emission; atmospheric corrosion; aluminum; aircraft structure; pitting corrosion; hydrogen bubbles; structural health monitoring

Online: 4 August 2022 (03:55:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0280.v1

TPE-RBF-SVM Model for Soybean Categories Recognition in Selected Hyperspectral Bands Based on Extreme Gradient Boosting Feature Importance Values

Qinghe Zhao, Zifang Zhang, Yuchen Huang, Junlong Fang

Subject: Engineering, General Engineering Keywords: Hyperspectral Technology; Non-destructive Testing; Soybean; Machine Learning; Support Vector Machine; Extreme Gradient Boosting; Tree-structured Parzen Estimator

Online: 19 July 2022 (07:12:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0419.v1

Local Heat Transfer Dynamics in the In-Line Tube Bundle under Asymmetrical Pulsating Flow

Aigul Haibullina, Aidar Khairullin, Denis Balzamov, Vladimir Ilyin, Veronika Bronskaya, Liliya Khairullina

Subject: Engineering, General Engineering Keywords: asymmetric pulsating flow; in-line tube bundle; CFD; enhancement of heat transfer

Online: 30 June 2022 (07:47:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0306.v1

FedAAR: A Novel Federated Learning Framework for Animal Activity Recognition with Wearable Sensors

Axiu Mao, Endai Huang, Haiming Gan, Kai Liu

Subject: Engineering, General Engineering Keywords: data privacy; animal behaviour; deep learning; distributed learning; client-drift; gradient conflicts

Online: 22 June 2022 (06:08:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0410.v3

Cross-sectional Analysis of Beams Subjected to Saint-Venant Torsion Using the Green’s Theorem and the Finite Difference Method

Valentin Fogang

Subject: Engineering, General Engineering Keywords: Theory of elasticity; Saint-Venant torsion; Green’s theorem; finite difference method; additional nodes; thin-walled sections; stress concentration at reentrant corners; multiply connected cross-section; warping displacement

Online: 1 June 2022 (11:01:06 CEST)

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This paper presents an approach to the elastic analysis of beams subjected to Saint-Venant torsion using Green’s theorem and the finite difference method (FDM). The Saint-Venant torsion of beams, also called free torsion or unrestrained torsion, is characterized by the absence of axial stresses due to torsion; only shear stresses are developed. A solution to this torsion problem consists of finding a stress function that satisfies the governing equation and the boundary conditions. The FDM is an approximate method for solving problems described with differential equations; it does not involve solving differential equations, equations are formulated with values at selected nodes of the structure. In this paper, the beam’s cross-section was discretized using a two-dimensional grid and additional nodes were introduced on the boundaries. The introduction of additional nodes allowed us to apply the governing equations at boundary nodes and satisfy the boundary conditions. Beams with solid sections as well as multiply connected cross-sections were analyzed using this model; shear stresses and localized stresses at reentrant corners, torsion constant, and warping displacements were determined. Furthermore, beams with thin-walled closed sections, single-cell or multiple-cell, were analyzed using the Prandtl stress function whereby a linear distribution of the shear stresses over the thickness was considered; closed-form solutions for shear stresses and torsion constant were derived. The results obtained in this study showed good agreement with the exact results for rectangular cross-sections, and the accuracy was increased through a grid refinement. For thin-walled closed sections, the shear stresses obtained at the centerline using the closed-form solutions were in agreement with the values using Bredt’s analysis but the maximal values in the cross-section, which did not necessarily occur at the position with the smallest thickness, were higher; in addition, the results using the closed-form solutions were in good agreement with those using FDM.

Preprint ARTICLE | doi:10.20944/preprints202205.0140.v1

Modeling of Multiple Fatigue Cracks for Aircraft Wing Corner Box Based on Non-ordinary Sate Peridynamics

Junzhao Han, Guozhong Wang, Xiaoyu Zhao, Rong Chen, Wenhua Chen

Subject: Engineering, General Engineering Keywords: Non-ordinary state-based Peridynamics; Compression-compression fatigue load; Multiple Cracks; Aircraft wing corner box

Online: 10 May 2022 (11:43:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0046.v1

Application of Two Novel Acoustic Emission Parameters on Identifying the Instability of Granite

Zhenxing Ji, Peihua Jiang, Haiyang Yi, Zhuang Zhuo, Chunyuan Li, Zhide Wu

Subject: Engineering, General Engineering Keywords: Information entropy; Correlation dimension; Acoustic emission; Rock instability

Online: 5 May 2022 (15:59:42 CEST)

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Preprint REVIEW | doi:10.20944/preprints202109.0135.v2

Overview of Blockchain Oracle Research

Giulio Caldarelli

Subject: Engineering, General Engineering Keywords: Blockchain; Smart Contracts; Oracles; IoT; Bibliometric Analysis

Online: 4 May 2022 (12:07:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0410.v2

Cross-sectional Analysis of Beams Subjected to Saint-Venant Torsion Using the Green’s Theorem and the Finite Difference Method

Valentin Fogang

Subject: Engineering, General Engineering Keywords: Theory of elasticity; Saint-Venant torsion; Green’s theorem; finite difference method; additional nodes; thin-walled sections; cross-section with openings; warping

Online: 26 April 2022 (10:36:19 CEST)

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This paper presents an approach to the elastic analysis of beams subjected to Saint-Venant torsion using Green’s theorem and the finite difference method (FDM). The Saint-Venant torsion of beams, also called free torsion or unrestrained torsion, is characterized by the absence of axial stresses due to torsion; only shear stresses are developed. The solution to this torsion problem consists of finding a stress function that satisfies the governing equation and the boundary conditions. The FDM is an approximate method for solving problems described with differential or partial differential equations; it does not involve solving differential equations, equations are formulated with values at selected nodes of the structure. In this paper, the beam’s cross-section was discretized using a two-dimensional grid and additional nodes were introduced at the boundaries. The introduction of additional nodes allowed us to apply the governing equations at boundary nodes and satisfy the boundary conditions. Beam’s cross-sections of various shapes and openings were analyzed using this model; shear stresses, torsion constant, and warping were determined. Furthermore, beams with thin-walled closed sections, single-cell or multiple-cell, were analyzed using the stress function whereby the linear distribution of the shear stresses over the thickness was considered; closed-form solutions for shear stresses and torsion constant were presented. For rectangular cross-sections, the results obtained in this study showed good agreement with the exact results, and the accuracy was increased through a grid refinement. For thin-walled closed sections it was noted that the maximal shear stress in the midline occurs at the position with the smallest thickness, which is in agreement with Bredt’s analysis, but the maximal shear stress in the cross-section did not necessarily occur at that position; moreover, the values of torsion constant were higher than those calculated using Bredt’s analysis

Preprint ARTICLE | doi:10.20944/preprints202203.0410.v1

Cross-sectional Analysis of Beams Subjected to Saint-Venant Torsion Using the Green’s Theorem and the Finite Difference Method

Valentin Fogang

Subject: Engineering, General Engineering Keywords: Theory of elasticity; Saint-Venant torsion; Green’s theorem; finite difference method; additional nodes; thin-walled sections; cross-section with openings; warping

Online: 31 March 2022 (14:18:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0181.v1

Net Zero Energy Housing: An Empirical Analysis from Measured Data

Leila Nikdel, Philip Agee, Georg Reichard, Andrew McCoy

Subject: Engineering, General Engineering Keywords: energy monitoring; net zero energy; human-building interaction; solar photovoltaics

Online: 14 March 2022 (09:49:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202202.0282.v1

FastTest Plugin: a New Plugin to Generate Moodle Quiz XML Files

Milagros Huerta, Manuel Alejandro Fernandez-Ruiz

Subject: Engineering, General Engineering Keywords: content creation tools; plugin; Moodle; e-learning technologies; LMS; XML file; quiz

Online: 22 February 2022 (16:23:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints202201.0411.v1

Image Denoising Using a Compressive Sensing Approach Based on Regularization Constraints

Assia El Mahdaoui, Abdeldjalil Ouahabi, Mohamed Said Moulay

Subject: Engineering, General Engineering Keywords: compressive sensing; image reconstruction; regularization; total variation; augmented Lagrangian; non-local self-similarity; wavelet denoising

Online: 27 January 2022 (11:02:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202201.0083.v1

Modeling of Risk Aversion Linked to Renewable Energy Policy and Decision-Maker Behavior

Dieudonné Dieudo Ecike Ewanga

Subject: Engineering, General Engineering Keywords: Modeling; risk averse; decision maker; choice; strategy; utility

Online: 6 January 2022 (11:55:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0490.v1

Immediate Notification of Traffic Accidents through a Mobile Application

Elizabeth Liñan Espinoza, Erich Jordy Echevarria Carpio, Laberiano Andrade-Arenas

Subject: Engineering, General Engineering Keywords: Accident traffic; app store; mobile app; mortality; notifications; scrum methodology.

Online: 30 December 2021 (16:20:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0358.v1

Proposed Standard Test Protocols and Outcome Measures for Quantitative Comparison of Emissions from Electronic Nicotine Delivery Systems

Edward C. Hensel, Nathan C. Eddingsaas, Qutaiba M. Saleh, S. Jayasekera, S. Emma Sarles, A. Gary DiFrancesco, and Risa J. Robinson

Subject: Engineering, General Engineering Keywords: ecigarette; regulatory science; substantial equivalence; public health; tobacco product comparison.

Online: 22 December 2021 (12:04:52 CET)

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This study introduces and demonstrates a comprehensive, accurate, unbiased approach to robust quantitative comparison of Electronic Nicotine Delivery Systems (ENDS) appropriate for establishing substantial equivalence (or lack thereof) between tobacco products. The approach is demonstrated across a family of thirteen pen- and pod-style ENDS products. Methods employed consist of formulating a robust emissions surface regression model, quantifying the empirical accuracy of the model as applied to each product, evaluating relationships between product design characteristics and maximum emissions characteristics, and presenting results in formats useful to researchers, regulators, and consumers. Results provide a response surface to characterize emissions (total particulate matter and constituents thereof) from each ENDS appropriate for use in a computer model and for conducting quantitative exposure comparisons between products. Results demonstrate that emissions vary as a function of puff duration, flow rate, E-Liquid composition, and device operating power. Further, results indicate that regulating design characteristics of ENDS devices and consumables may not achieve desired public health outcomes; it is more effective to regulate maximum permissible emissions directly. Three emissions outcome measures (yield per puff, mass concentration and constituent mass ratio) are recommended for adoption as standard quantities for reporting by manufacturers and research laboratories. The approach provides a means of (a) quantifying and comparing maximal emissions from ENDS products spanning their entire operating envelope, (b) comparative evaluation of ENDS devices and consumable design characteristics, and (c) establishing comparative equivalence of maximal emissions from ENDS. A consumer-oriented product emissions dashboard is proposed for comparative evaluation of ENDS exposure potential. Maximum achievable power dissipated in the coil of ENDS is identified as a potentially effective regulatory parameter.

Preprint ARTICLE | doi:10.20944/preprints202112.0345.v1

Windtech – A Sensory Device for ‘Cold’ Sensation Measurements

Amir Leyli, Hassan Khawaja, Ståle Antonsen, Daniel Swart

Subject: Engineering, General Engineering Keywords: Cold Sensation; Heat Loss; Cold Related Risks; Real Feel Temperature

Online: 21 December 2021 (14:06:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0227.v1

Experimental Methodology to Find the Center of Gravity of a Solid

Joohoon Je, Eunsung Jekal

Subject: Engineering, General Engineering Keywords: center of solid

Online: 14 December 2021 (11:38:55 CET)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202112.0081.v1

Computational Analysis of Specific Indicators to Manage Crop Yield and Profits Under Extreme Heat and Climate Change Conditions

Maya Sharma

Subject: Engineering, General Engineering Keywords: Agriculture; Extreme Heat; Climate Change; Grandview; Edge Computing; 5G; IoT; Drone Imagery; LiDAR; Decision framework

Online: 6 December 2021 (15:19:50 CET)

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The US pacific northwest recorded its highest temperature in late June 2021. The three-day stretch of scorching heat had a devastating effect on not only the residents of the state, but also on the crops thus impacting the food supply-chain. It is forecasted that streaks of 100-degree temperatures will become common. Farmers will have to adapt to the changing landscape to preserve their crop yield and profitability. A research collaborative consisting of researchers and academicians in Eastern Washington led by a pioneering startup has setup a 16.9-acre Honeycrisp Apple Smart Orchard in Grandview, WA as a laboratory to study the environmental and plant growth factors in real-time using modern computational tools and techniques like IoT (Internet of Things), Edge and Cloud Computing, and Drone and LiDAR (Light Detection and Ranging) imaging. The computational analysis is used to develop guidelines for precision agriculture for orchard blocks to address plant growth issues scientifically and in a timely fashion. The analysis also helps in creating risk-mitigation strategies for severe weather events while helping prepare farmers to maximize crop yield and profitability per acre. I was fortunate to gain access to the terabytes of farm data related to the weather, soil, water, tree, and canopy health, to analyze and formulate recommendations for the farmers that can be adopted nationwide for different crops and weather conditions. This paper discusses the different streams of farm data that were analyzed (ex. soil moisture, soil water potential, and sap flow) and the development of the framework to use data to convert insights into actionable steps. For example, the use of sensors can inform a farmer that their level of soil water potential is below threshold in a specific patch of the orchard, prompting them to turn on irrigation for the patch instead of the whole orchard. I estimate that using an IoT-sensor-based decision framework discussed in this paper, growers can save up to 55% of their water costs for the season. Using these insights, farmers can better manage their irrigation resources and labor, thus maximizing their crop yield and profits.

Preprint ARTICLE | doi:10.20944/preprints202111.0296.v1

How do German Manufacturers React to the Increasing Societal Pressure for Decarbonisation?

Stefan M. Buettner, Christian Schneider, Werner König, Hannes Mac Nulty, Chiara Piccolroaz, Alexander Sauer

Subject: Engineering, General Engineering Keywords: decarbonisation; carbon footprint; net-zero; resources; energy consumption; implementation; manufacturing; product carbon footprint; carbon neutrality

Online: 17 November 2021 (10:12:59 CET)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints202101.0504.v2

Addendum to “The VIT Transform Approach to Discrete-Time Signals and Linear Time-Varying Systems”

Edward Kamen

Subject: Engineering, General Engineering Keywords: VIT transform, discrete-time signals, linear time-varying systems

Online: 19 October 2021 (10:15:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0253.v1

Machine Learning (ML) based Thermal Management for Cooling of Electronics Chips by Utilizing Thermal Energy Storage (TES) in Packaging that Leverage Phase Change Materials (PCM)

Aditya Jayakumar Chuttar, Debjyoti Banerjee

Subject: Engineering, General Engineering Keywords: thermal management; electronics cooling; thermal energy storage; TES; duty cycle; phase change materials; PCM; cold finger technique, CFT.

Online: 18 October 2021 (15:27:08 CEST)

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Working Paper REVIEW

The Role of Microorganisms in the Formation, Dissolution and Transformation of Secondary Minerals in Mine Rock and Drainage: A Review

Jose Eric Ortiz-Castillo, Mohamad Mirazimi, Maryam Mohammadi, Eben Dy, Wenying Liu

Subject: Engineering, General Engineering Keywords: mine rock drainage; sulfide oxidation; neutralization by silicates; secondary iron minerals; toxic element scavenging

Online: 15 October 2021 (12:22:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0148.v1

Digital Twin: An Oracle for Efficient Crowdsourcing of Research & Technology Development through Blockchain

Jens Ducrée

Subject: Engineering, General Engineering Keywords: Digital twin; centrifugal microfluidics; Lab-on-a-Disc; crowdsourcing; blockchain; decentralization; oracle; consensus; non-fungible token; NFT; decentralized science; DeSci

Online: 8 October 2021 (16:55:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0365.v1

New Formula for the Identification of Liquefaction Based on the Investigation of the Songyuan Site

Ping Li, Yuan Zhang, Yudong Zhang

Subject: Engineering, General Engineering Keywords: Songyuan earthquake; Songyuan site; sand liquefaction; hyperbolic model; discriminant formula

Online: 21 September 2021 (14:12:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0231.v1

Perforated Steel Stud to Improve the Acoustic Insulation of Drywall Partitions

Arun Arjunan, Ahmad Baroutaji, John Robinson

Subject: Engineering, General Engineering Keywords: Sound insulation; partition walls; perforated studs; acoustic model; sound reduction index; finite element analysis; A-weighted pink noise; A-weighted urban noise

Online: 14 September 2021 (10:07:36 CEST)

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Preprint REVIEW | doi:10.20944/preprints202109.0135.v1

Who Is Contributing to Academic Research on Blockchain Oracles? A Bibliometric Analysis

Giulio Caldarelli

Subject: Engineering, General Engineering Keywords: Blockchain; Smart Contracts; Oracles; IoT; Bibliometric Analysis.

Online: 8 September 2021 (07:48:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202108.0393.v1

Increasing Rejection in Microfiltration Using Vibrating Membrane

Asmat Ullah, Kalam Alam, Saad Ullah Khan, Victor M. Starov

Subject: Engineering, General Engineering Keywords: Membrane oscillation; shear rate; slotted structure membrane; oil water separation and membrane fouling

Online: 19 August 2021 (06:51:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202108.0331.v1

Chemical Treatment of Black Tiger nut Tubers (Cyperus esculentus) Variety to Obtain a Bio-based Product

No name Djomdi, Richard Ejoh, Guillaume Pierre, Cédric Delattre, Philippe Michaud, Robert Ndjouenkeu

Subject: Engineering, General Engineering Keywords: Cyperus esculentus; soaking; husking; microorganism; tiger nuts; black tubers

Online: 16 August 2021 (11:59:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0547.v1

Smart Cities’ Strategies to Ameliorate Environmental Impacts of Rapid Urbanization in Beijing, China

Paulina Rodríguez Fiscal, Rallou Taratori, Marie Abigail Pacho, Christos S. Ioakimidis, Sesil Koutra

Subject: Engineering, General Engineering Keywords: Developing countries; Environmental Impact Assessment; Rapid urbanization; Smart strategies

Online: 23 July 2021 (15:01:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0512.v1

A Study of RANS Turbulence Models in Fully Turbulent Jets: A Perspective for CFD-DEM Simulations

Dustin Steven Weaver, Sanja Mišković

Subject: Engineering, General Engineering Keywords: Jet Flow; CFD; Turbulence; CFD-DEM

Online: 21 June 2021 (12:52:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0042.v1

Near Miss Archive: a Challenge to Share Knowledge Among Inspectors and Improve Seveso Inspections

Silvia Maria Ansaldi, Patrizia Agnello, Annalisa Pirone, Maria Rosaria Vallerotonda

Subject: Engineering, General Engineering Keywords: near miss modelling; sustainability; Machine Learning.

Online: 1 June 2021 (15:10:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202012.0420.v3

Small Symmetrical Deformation of Thin Torus with Circular Cross-Section

Bohua Sun

Subject: Engineering, General Engineering Keywords: toroidal shell; deformation; Gauss curvature; Heun function; hypergeometric function; Maple

Online: 19 April 2021 (12:03:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202012.0420.v2

Small Symmetrical Deformation of Thin Torus with Circular Cross-Section

Bohua Sun

Subject: Engineering, General Engineering Keywords: toroidal shell; deformation; Gauss curvature; Heun function; hypergeometric function; Maple

Online: 2 March 2021 (09:22:01 CET)

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Working Paper ARTICLE

Subsampling Approaches for Compressed Sensing with Ultrasound Arrays in Non-Destructive Testing

Eduardo Pérez, Jan Kirchhof, Fabian Krieg, Florian Römer

Subject: Engineering, General Engineering Keywords: Full Matrix Capture; Compressed Sensing; Sparse Array

Online: 3 November 2020 (14:11:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints202009.0730.v1

Using PCM in two proposed residential buildings in Christchurch, New Zealand

Erik Schmerse, Charles Ikutegbe, Amar Auckaili, Mohammed Farid

Subject: Engineering, General Engineering Keywords: Structure component, occupant behaviour, energy savings, lightweight building and comfort enhancement

Online: 30 September 2020 (08:23:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0228.v1

Forecasting COVID 19 Confirmed Cases Using Machine Learning: the Case of America

Mario Jojoa, Begoña Garcia-Zapirain

Subject: Engineering, General Engineering Keywords: multilayer perceptron; support vector machine; COVID19; SarsCov2; forecasting; machine learning; public health; pandemic

Online: 10 September 2020 (08:05:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0161.v1

Android Privacy Made Easier the Cloud Way

Seyedmostafa Safavi, Zarina Shukur

Subject: Engineering, General Engineering Keywords: Smartphone; cloud; privacy; framework; mobile privacy; blockchain; permission system; data security; Android OS; Zygote; Dalvik VM

Online: 7 September 2020 (08:53:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0037.v2

CoDRIVE – Delivering High Accuracy, Ubiquitous Positioning Through Combined Radio Navigation and Inertial Sensing Technologies

Simon Roberts, Xiaolin Meng, Chang Xu, Xinao Wang, Yijiian Cui, George Ye, Lukasz Bonenberg

Subject: Engineering, General Engineering Keywords: GNSS; RFID; obscuration, augmentation, radio-navigation

Online: 3 September 2020 (07:44:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0037.v1

CoDRIVE – Delivering High Accuracy, Ubiquitous Positioning Through Combined Radio Navigation and Inertial Sensing Technologies

Simon Roberts

Subject: Engineering, General Engineering Keywords: GNSS; RFID; obscuration, augmentation, radio-navigation

Online: 2 September 2020 (09:59:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0017.v1

Addressed Fiber Bragg Structures in Load Sensing Wheel Hub Bearings

Timur Agliullin, Robert Gubaidullin, Airat Sakhabutdinov, Oleg Morozov, Artem Kuznetsov, Valentin Ivanov

Subject: Engineering, General Engineering Keywords: microwave photonic sensor system; numerical simulation; addressed fiber Bragg structures; load sensing bearings; vehicle dynamics control

Online: 1 September 2020 (12:11:45 CEST)

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Working Paper ARTICLE

Pyrometallurgical Removal of Arsenic from Dusts Collected in Electrostatic Precipitators of Copper Part II:-Dust from a Fluidized Bed Roasting Furnace

Hector Henao, Ignacio Paredes, Rodrigo Diaz, Javier Ortiz

Subject: Engineering, General Engineering Keywords: Copper smelter dust; electrostatic precipitators of copper; removal of arsenic; sulphidisation; roasting process.

Online: 20 August 2020 (09:55:21 CEST)

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Working Paper ARTICLE

Detection and Imaging of Damages and Defects in Fibre-Reinforced Composites by Resonance Magnetic Technique

Carine Alves, Janete Oliveira, Alberto Tannus, Alessandra Tarpani, José Tarpani

Subject: Engineering, General Engineering Keywords: damage and defect assessment; magnetic resonance imaging; polymer matrix composite

Online: 20 August 2020 (04:05:00 CEST)

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Working Paper ARTICLE

Mass Timber Solutions for Eight Story Mixed-Use Buildings: A Comparative Study of GHG emissions

Aurora Jensen, Zlatan Sehovic, Nicole St. Clair Knobloch, John Klein, Paul Richardson, Julie Janiski

Subject: Engineering, General Engineering Keywords: mass timber; life cycle assessment; embodied carbon; sustainable design; functional equivalence

Online: 20 August 2020 (03:59:10 CEST)

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Working Paper ARTICLE

Pyrometallurgical Removal of Arsenic from Dusts Collected in Electrostatic Precipitators of Copper, Part I-Dust from a Flash Smelting Furnace

Hector Henao, Ignacio Paredes, Rodrigo Diaz, Javier Ortiz

Subject: Engineering, General Engineering Keywords: copper smelter dust; electrostatic precipitators of copper; removal of arsenic; sulphidation; roasting process

Online: 18 August 2020 (07:39:38 CEST)

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This paper (the first of a series of two) seeks to describe the experimental results of removing arsenic from dust collected in electrostatic precipitators of copper into the pyro-metallurgy gas cleaning systems. The first work corresponds to the treatment of dust contained in gas off generated in the copper Flash Smelting Furnace process (FS dust), while the second focuses on the treatment of dust generated from a Fluidized Bed Roasting Furnace (RP dust). The dust is complex sulphur-oxide-metals with concentrations of copper above 10 wt % and relatively high concentrations of silver. Due to the dust has an arsenic’s concentration above 5 wt %, makes it difficult to recover valuable metals through hydro-metallurgical processes or by direct recirculation of the dust into a smelting furnace. Thus, the development of pyrometallurgical processes aimed to reduce the concentration of arsenic in dust is the main purpose of this study, particularly the production of a material suitable for recirculation in smelting operations. The works conducted provide a detailed characterization of the dust, including Quantitative Evaluation of Minerals by Scanning Electron Microscopy (QEMSCAN), Scanning electron microscope-Energy Dispersive X-ray analysis (SEM/EDS), X-ray diffraction (XR-D), elemental chemical analysis using Atomic Adsorption (A. A.) and X-Ray Fluorescence (X-RF). By considering that arsenic volatilization requires a process of reduction-sulphidation-volatilization, the works explore the roasting of mixtures of copper concentrate/dust, sulphur/dust and pyrrhotite/dust. The degree of volatilization was determined by elemental chemical analysis of arsenic in the mixture after and before the roasting process. The results indicated the effect of parameters such as temperature, gas flow, gas composition and the ratio of mixtures (concentrate, sulphur or pyrrhotite)/dust on the volatilization of arsenic. The findings indicate that the concentration of arsenic in the FS dust can be reduced to a relatively low level (<0.5 wt %), allowing to the material to be recirculated into smelting processes.

Preprint ARTICLE | doi:10.20944/preprints202008.0047.v2

Design Is How We Change the World! Can We Do It in Socially, Environmentally and Economically Acceptable Ways? Synthesizing Design Tools for This Utopian Concept

Kumaraswamy Ponnambalam, Abbas Seifi, Jamshid Mousavi

Subject: Engineering, General Engineering Keywords: design for society; design for sustainability; design under uncertainty; circular design; donut economics; life cycle analysis

Online: 5 August 2020 (04:50:02 CEST)

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Since the beginning, humans advanced their civilization by making better tools to improve their lives. Tools and products were designed for better living considering manufacturing issues, cost and time as predominant criteria. It has become clear that not considering environment and society, both at local/global levels, has now become a major impediment affecting living conditions on a large portion of the Earth and in many societies. Design methodologies should lead to creative solutions with consideration to engineering and economics for practicality but also to environmental and social constraints for sustainability. We propose a comprehensive design methodology based on multidisciplinary design to include the knowledge of humanities, environmentalists, science and engineering, and allowing for experts’ inputs from these areas to provide a holistic approach to engineering design . For example, experts in humanities are expected to interact with stakeholders to evaluate their value systems to provide guidance for the design. The methodology that we synthesize is new and combines (i) Societal level impacts at all scales, (ii) Environmental impacts and (iii) Engineering design with economic impacts, including uncertainty considerations. The proposed design methodology is called Social-Environmental-Economical-Engineering Framework (SEEEF). It can utilize concepts and tools such as Circular Design, Doughnut Economics, design based on environmental life cycle analysis, among others. SEEEF is quantity based and provides steps for evaluating any project or product in an objective manner and will help train engineers in design for sustainability. It also provides non-engineers with a significant role in design to increase their understanding of the hard constraints of engineering. Ultimately, SEEEF allows society to take an informed decision considering short/long term and local/global impacts of the design and the pertinent uncertainties.

Preprint ARTICLE | doi:10.20944/preprints202008.0047.v1

Design Is How We Change the World! Can We Do It in Socially, Environmentally and Economically Acceptable Ways? Synthesizing Design Tools for This Utopian Concept

Kumaraswamy Ponnambalam, Abbas Seifi, Jamshid Mousavi

Subject: Engineering, General Engineering Keywords: design for society; design for sustainability; design under uncertainty; circular design; donut economics; life cycle analysis

Online: 2 August 2020 (16:58:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0671.v1

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

Somaye Akbari, Addie Bahi, Ali Farahani, Abbas Milani, Frank Ko

Subject: Engineering, General Engineering Keywords: Lignin; PAMAM dendrimer; electrospun fiber; intermolecular interactions

Online: 28 July 2020 (10:04:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0625.v1

Computer Vision for Elderly Care Based on Hand Gestures

Munir Oudah, Ali Al-Naji, Javaan Chahl

Subject: Engineering, General Engineering Keywords: elderly care; hand gesture; computer vision system; Microsoft Kinect depth sensor; Arduino Nano Microcontroller; global system for mobile communication (GSM)

Online: 26 July 2020 (02:07:09 CEST)

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Preprint REVIEW | doi:10.20944/preprints202007.0522.v1

A Review of Low Altitude Manned Aviation Operations

Andrew Weinert, Gabriela Barrera

Subject: Engineering, General Engineering Keywords: aircraft; review

Online: 22 July 2020 (11:19:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0480.v1

Emergence Aiming Innovation for Sustainability

Fátima Lanhoso, Denis A. Coelho

Subject: Engineering, General Engineering Keywords: unsustainabiliy; complex systems; holism; systemic approach; creative emergence; causal emergence; downward causation; macroscale; microscale; synergy

Online: 21 July 2020 (11:43:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0401.v1

21st Century Technology Renascence A Driven Impacting Factor For Future Energy, Economy, Ecommerce, Education, or Any Other E-Technologies

Bahman Zohuri

Subject: Engineering, General Engineering Keywords: Modern Technology; Traditional Technology; Technology Renascence; E-Banking; Ecommerce; Education; Energy; Economy and Other E-Technologies; Artificial Intelligence; Business Intelligence

Online: 17 July 2020 (16:14:26 CEST)

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Working Paper ARTICLE

Mass Timber Solutions for Eight Story Mixed-Use Buildings: A Comparative Study of GHG emissions

Aurora Jensen, Zlatan Sehovic, Nicole St. Clair Knobloch, John Klein, Paul Richardson, Julie Janiski

Subject: Engineering, General Engineering Keywords: mass timber; life cycle assessment; embodied carbon; sustainable design; functional equivalence

Online: 9 July 2020 (07:41:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0085.v1

Evaluation of Factors Governing the Use of Floating Solar System: A Study on Iran's Important Water Infrastructures

Mohammad Fereshtehpour, Reza Javidi Sabbaghian, Ali Farrokhi, Ehsan Bahrami Jovein, Elham Ebrahimi Sarindizaj

Subject: Engineering, General Engineering Keywords: Floating PV system; Sustainable Energy Production; Solar Power Plant; Water Infrastructures; Evaporation; Water Conservation

Online: 5 July 2020 (15:34:45 CEST)

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Preprint REVIEW | doi:10.20944/preprints202006.0027.v1

Artificial Intelligence and Drones to Combat COVID - 19

T Preethika, P Vaishnavi, J Agnishwar, K Padmanathan, S Umashankar, S Annapoorani, M Subash, K Aruloli

Subject: Engineering, General Engineering Keywords: COVID-19; pandemic; Artificial Intelligence; prevention; testing; treatment

Online: 4 June 2020 (06:30:35 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202005.0415.v1

Standalone Solar-Powered Ultraviolet Mobile Disinfectant: Bringing Solar Energy in the Global Fight against COVID-19

Nassim Ahmed Mahammedi, Adel Mahammedi

Subject: Engineering, General Engineering Keywords: solar energy; photovoltaics; UVGI; UVC; COVID-19; coronavirus; SARS-CoV-2

Online: 25 May 2020 (17:59:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0020.v2

Experimental and Numerical Evaluation of Residual Displacement and Ductility in Ratcheting and Shakedown of an Aluminum Beam

Simone Palladino, Luca Esposito, Paolo Ferla, Elena Totaro, Renato Zona, Vincenzo Minutolo

Subject: Engineering, General Engineering Keywords: shakedown; plasticity; limit design; ratcheting; experimental comparison; residual displacement; ductility assessment

Online: 19 May 2020 (04:29:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0107.v1

Using Discrete Multiphysics Modelling to Assess the Effect of Calcification on Hemodynamic and Mechanical Deformation of Aortic Valve

Adamu Musa Mohammed, Mostapha Ariane, Alessio Alexiadis

Subject: Engineering, General Engineering Keywords: Discrete Multiphysics Modelling; Smoothed Particle Hydrodynamics; Lattice Spring Model; Particle-base method; Aortic Valve; Calcification; Stenosis

Online: 7 April 2020 (13:33:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0055.v1

Automatic Quality Assessments of Laser Powder Bed Fusion Builds from Photodiode Sensor Measurements

Sarini Jayasinghe, Paolo Paoletti, Chris Sutcliﬀe, John Dardis, Nick Jones, Peter Green

Subject: Engineering, General Engineering Keywords: Laser powder bed fusion; automatic quality assessment; machine learning; automatic relevance determination

Online: 6 April 2020 (12:41:05 CEST)

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Working Paper REVIEW

Survey Paper About Quality Assurance In Cloud Computing

Sidra Shahzad, Iqra Hanif, Rabail Shafique

Subject: Engineering, General Engineering Keywords: cloud computing; cloud broker; PuLSAR; IaaS; PaaS; SaaS; QoS; SOS

Online: 3 April 2020 (15:31:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0020.v1

Experimental and Numerical Evaluation of Residual Displacement and Ductility in Ratcheting and Shakedown of an Aluminium Beam

Simone Palladino, Luca Esposito, Paolo Ferla, Elena Totaro, Renato Zona, Vincenzo Minutolo

Subject: Engineering, General Engineering Keywords: shakedown; plasticity; limit design; ratcheting; experimental comparison; residual displacement

Online: 3 April 2020 (03:35:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0442.v1

A Pragmatic Approach to the Design of Advanced Precision Terrain Aided Navigation for UAVs and Its Verification

Jungshin Lee, Chang-Ky Sung, Juhyun Oh, Kyungjun Han, Sangwoo Lee, Myeong-Jong Yu

Subject: Engineering, General Engineering Keywords: Terrain Referenced Navigation (TRN); Federated Filter; Interferometric Radar Altimeter (IRA); Batch Processing; Auxiliary Particle Filter; Digital Elevation Model (DEM); Captive Flight Test

Online: 31 March 2020 (04:29:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0150.v1

Cloud-Based CAD Parametrization for Design Space Exploration and Design Optimization in Numerical Simulations

Joel Guerrero, Luca Mantelli, Sahrish B. Naqvi

Subject: Engineering, General Engineering Keywords: CFD; numerical optimization; CAD parametrization; cloud-based; design space exploration; SSIM

Online: 9 March 2020 (09:50:23 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0043.v1

Determinants of the Quality of the Living Environment, Including PM 2.5 and PM10 Dust Pollution in the Context of Spatial Issues - The Radzionkow Case

Rafał Blazy

Subject: Engineering, General Engineering Keywords: qlity of the environment; spatial location conditions; air pollution research; the problem of city ventilation; spending of EU funds to improve the quality of the environment

Online: 4 February 2020 (10:34:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0008.v1

Optimal Conditions of Membrane Filtration Process in the Treatment of Blending Water by Lab-Scale and Pilot-Scale Tests

Sung-joon Kim

Subject: Engineering, General Engineering Keywords: ceramic membrane; combination process; microfiltration; optimization; recovery efficiency

Online: 3 February 2020 (03:58:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202001.0298.v1

A Monte Carlo-Based Outlier Diagnosis Method for Sensitivity Analysis

Vinicius Francisco Rofatto, Marcelo Tomio Matsuoka, Ivandro Klein, Mauricio Roberto Veronez, Luiz Gonzaga da Silveira Jr.

Subject: Engineering, General Engineering Keywords: Probability; Hypothesis Testing; Outlier Detection; Monte Carlo; Quality Control; Control System; Reliability; Sensitivity; Random Number Generators

Online: 25 January 2020 (16:40:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints201912.0195.v2

High-Resolution Hologram Calculation Method Based on Light Field Image Rendering

Xin Yang, FuYang Xu, HanLe Zhang, HongBo Zhang, Kai Huang, Yong Li, Qiong-Hua Wang

Subject: Engineering, General Engineering Keywords: holographic 3D display; computer generated holography; light field image rendering; pinhole array

Online: 17 January 2020 (06:46:23 CET)

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Working Paper ARTICLE

The Utilization of Electrokinetics for the Treatment of Industrial Wastewater-Industrial Size Experimental Study

Yujie Su, Hui Hu, Mei Dong, Rafig Azzam

Subject: Engineering, General Engineering Keywords: wastewater treatment; electrocoagulation; electrokinetics; industrial wastewater; industrial size experiment

Online: 25 December 2019 (09:30:22 CET)

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Working Paper ARTICLE

Feasibility of Rocket Artillery Systems With Reusable First Stage

Mikhail Shubov

Subject: Engineering, General Engineering Keywords: guided artillery rockets; rocket launcher aircraft

Online: 22 December 2019 (14:21:36 CET)

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Working Paper ARTICLE

Detection and Imaging of Damage and Defects in Fiber-Reinforced Composites by 3D Computed Tomography Resonance Magnetic Technique

Alessandra Cristina Soares Tarpani, Carine Alves, Alberto Tannus, José Tarpani

Subject: Engineering, General Engineering Keywords: damage and defect assessment; magnetic resonance imaging; polymer matrix composite

Online: 22 December 2019 (10:55:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201912.0195.v1

High-Resolution Hologram Calculation Method Based on Light Field Image Rendering

Xin Yang, FuYang Xu, HanLe Zhang, HongBo Zhang, Kai Huang, Yong Li, Qiong-Hua Wang

Subject: Engineering, General Engineering Keywords: holographic 3D display; computer generated holography; light field image rendering; pinhole array

Online: 15 December 2019 (14:58:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints201911.0261.v1

Feature Selection Based on Robust LLE Vote and Its Application to Bearing Fault Diagnosis

Haishuang Yin, Zebiao Hu, Yuanhong Liu

Subject: Engineering, General Engineering Keywords: feature selection; locally linear embedding; regularization technology; bearing fault diagnosis

Online: 22 November 2019 (10:05:03 CET)

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Working Paper ARTICLE

An Antenna Sensor to Identify Finger Postures

Chun-Hsi Su, Hong-Wei Wu

Subject: Engineering, General Engineering Keywords: antenna sensor; radio frequency; dipole antenna

Online: 3 November 2019 (18:03:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints201911.0019.v1

Deep Community Detection Method for Social Networks

Ling Wu, Qishan Zhang, Chi-Hua Chen

Subject: Engineering, General Engineering Keywords: community detection; social network; convolutional neural network; auto-encoder

Online: 3 November 2019 (15:51:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints201910.0088.v2

Alternative Methods For Preheating Outdoor Ventilation Air

Anna Romanska - Zapala Romanska - Zapala, Mark Bomberg, Miroslaw Dechnik, Malgorzata Fedorczak-Cisak, Marcin Furtak

Subject: Engineering, General Engineering Keywords: earth-air heat exchanger; energy efficiency; using thermal mass; smart and integrated control systems, thermal comfort

Online: 29 October 2019 (09:58:31 CET)

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Preprint REVIEW | doi:10.20944/preprints201910.0198.v1

Importance of Unmanned Aerial Vehicles (UAVs) in the Documentation of Cultural Heritage

ALİ ULVİ

Subject: Engineering, General Engineering Keywords: cultural heritage; uav; documentati̇on

Online: 17 October 2019 (12:36:00 CEST)

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Working Paper ARTICLE

A High Signal Noise Ratio UWB Radar for Buried Pipe Location Using Golay Complementary Sequences

Jingxia Li, Yang Liu, Hang Xu, Bingjie Wang, Li Liu, Xinpeng Chen

Subject: Engineering, General Engineering Keywords: golay complementary sequences; sidelobes; pipe detection; chaotic signal

Online: 26 September 2019 (05:08:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0039.v1

Comparison of Water Resource Policies between Brazil and Italy

Antonio Pasqualetto, Diego Lo Presti, Massimo Rovai, Aldo Muro Jr

Subject: Engineering, General Engineering Keywords: water management; planning; water resources; water sustainability policies; water laws

Online: 4 September 2019 (03:37:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201908.0240.v1

Fast Multiple Projection Image Method for VR and AR Near-eye 3D Display

Xin Yang, HongBo Zhang, QingHua Wang

Subject: Engineering, General Engineering Keywords: holographic 3D display; computer generated holography; augmented reality; virtual reality

Online: 23 August 2019 (09:47:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0316.v1

A Real-time Geo-Resilience Support Paradigm for Regional Infrastructure Sustainability using Synthetic DADO Machine Architecture

Hasan Tariq, Farid Touati, Mohammed Abdulla E. Al-Hitmi, Damiano Crescini, Adel Ben Mnaouer

Subject: Engineering, General Engineering Keywords: sustainability; geo-resilience support system(GRSS); chaos sets; structure health monitoring (SHM); DADO machine; RETE; TREAT; LEAPS; GATOR; Internet of Things (IoT)

Online: 28 July 2019 (14:58:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0291.v1

Allocation of Energy Saving Target for Provinces Based on Cluster Analysis in Vietnam

Chau Dinh Van

Subject: Engineering, General Engineering Keywords: energy efficiency; clustering analysis; allocation target; Vietnam

Online: 25 July 2019 (11:48:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0150.v1

Switching of Lasing Wavelength and Threshold Current of Semiconductor Laser by Temperature Variation

Suraj Manikandan

Subject: Engineering, General Engineering Keywords: laser diode; wavelength; stimulated emission; temperature effect

Online: 16 June 2019 (16:53:46 CEST)

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Preprint REVIEW | doi:10.20944/preprints201905.0041.v1

Recent Advances in Pipelines Monitoring and Oil Leakage Detection Technologies: Principles and Approaches

Mutiu Adesina Adegboye, Wai-Keung Fung, Aditya Karnik

Subject: Engineering, General Engineering Keywords: leakage; leak detection; leak characterisation; leak localization; pipelines; wireless sensor networks

Online: 6 May 2019 (08:52:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0173.v1

Device for Measuring and Maintaining the Water’s Level in a Tank

Ionut Craiu, Nicolae Fidel, Mihail-Florin Stan, Ramona Chirescu, Florian Ion

Subject: Engineering, General Engineering Keywords: capacitive level sensor; water level monitoring; maintaining constant water level

Online: 15 April 2019 (12:57:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0001.v1

Compact and Powerful: A Vacuum Powered Soft Textile-Based Clutch

Ali Sadeghi, Alessio Mondini, Barbara Mazzolai

Subject: Engineering, General Engineering Keywords: soft clutch; soft robotics; textile based clutch; wearable robotics; soft actuator, exosuit; variable stiffness; stiffness control; textile

Online: 1 April 2019 (08:16:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0274.v1

Ecofriendly Approach to Adsorption of Congo Red from Aqueous Media Using Chaff Powder from Jatropha curcas Seed (Isotherm and Kinetic Model)

Musa Yahaya pudza, Zurina Z. Abidin

Subject: Engineering, General Engineering Keywords: adsorption kinetics; isotherm models; Jatropha curcas; Congo red; effects

Online: 29 March 2019 (08:09:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints201903.0059.v1

Robust Supervision by Integration External and Bond Graph Models of a Desalination System

Abderrahmene Sallami, Dhia Mzoughi, Allegui Allegui, Abdelkader Mami

Subject: Engineering, General Engineering Keywords: Robust Supervision, Bond Graph model, External model, Desalination unit, Reverse osmosis, Linear Fractional Transformation.

Online: 5 March 2019 (12:03:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints201902.0183.v1

Two-Echelon Routing Problem for Parcel Delivery by Cooperated Truck and Drone

Yao Liu, Jianmai Shi, Guohua Wu, Zhong Liu, Witold Pedrycz

Subject: Engineering, General Engineering Keywords: two-echelon routing; vehicle routing; truck and drone; heuristic; simulated annealing algorithm

Online: 19 February 2019 (15:17:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201902.0110.v1

Cooperated Routing Problem for Ground Vehicle and Unmanned Aerial Vehicle: The Application on Intelligence, Surveillance and Reconnaissance Missions

Yao Liu, Zhihao Luo, Zhong Liu, Jianmai Shi, Guangquan Cheng

Subject: Engineering, General Engineering Keywords: two-echelon routing; vehicle routing; vehicle-mounted UAVs; ISR mission

Online: 13 February 2019 (10:33:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0487.v2

Optimization of Base Location and Patrol Routes for Unmanned Aerial Vehicles in Border Intelligence, Surveillance and Reconnaissance

Yao Liu, Zhong Liu, Jianmai Shi, Guohua Wu, Chao Chen

Subject: Engineering, General Engineering Keywords: location routing; unmanned aerial vehicle; border patrol; heuristic

Online: 16 January 2019 (10:04:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0096.v1

Modification of Prandtl Wind Tunnel

Bohua Sun

Subject: Engineering, General Engineering Keywords: Wind tunnel, Prandtl’s configuration, corners, vortex, turbulence, pressure loss

Online: 14 December 2018 (10:44:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0413.v1

A Green Process for the Extraction and Purification of Hesperidin from Mexican Lime Peel (Citrus aurantifolia Swingle) Extendible to Citrus Genus

José Daniel Padilla de la Rosa, Priscilla Ruiz-Palomino, Guadalupe M. Guatemala-Morales, Jorge A. García-Fajardo, Georgina C. Sandoval-Fabián, Enrique Arriola-Guevara

Subject: Engineering, General Engineering Keywords: Citrus aurantifolia Swingle; hesperidin; citrus byproducts; adsorption

Online: 19 November 2018 (04:14:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0412.v1

Geographical Area Network—Structural Health Monitoring Utility Computing Model

Hasan Tariq, Anas Tahir, Farid Touati, Mohammed Abdulla E Al-Hitmi, Damiano Crescini, Adel Ben Mnaouer

Subject: Engineering, General Engineering Keywords: Geographical Area Network (GAN); Structural Health Monitoring (SHM); Utility Computing (UC); Things as a Service (TaaS); Internet of Things (IoT)

Online: 19 November 2018 (03:58:56 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0173.v1

Optimization and Entropy Production: Application to Carnot-Like Refrigeration Machines

Camelia Stanciu, Michel Feidt, Monica Costea, Dorin Stanciu

Subject: Engineering, General Engineering Keywords: Carnot machine; refrigeration; entropy production; thermodynamics; optimization

Online: 7 November 2018 (14:48:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0747.v1

All-Fiber CO₂ Sensor Using Hollow Core PCF Operating in the 2 μm Region

Sully Milena Mejia Quintero, Luiz Carlos Guedes Valente, Marcos Sebastião de Paula Gomes, Hugo Gomes da Silva, Bernardo Caroli de Souza

Subject: Engineering, General Engineering Keywords: gas sensor; photonic crystal fiber; tunable laser; fiber Bragg Grating; carbon dioxide monitoring

Online: 31 October 2018 (10:16:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0734.v1

Potential of Wind Energy Development for Water Abstraction Systems in Developing Country Context: A Case of Teso Sub-Region of Uganda

James Tondo Kasozi, Nicholas Kiggundu, Joshua Wanyama, Noble Banadda

Subject: Engineering, General Engineering Keywords: wind energy; weibull distributions; water abstraction; water stress; water pumping

Online: 31 October 2018 (06:54:36 CET)

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