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Preprint ARTICLE | doi:10.20944/preprints201809.0017.v1

What Smart Campuses Can Teach Us about Smart Cities: A Case Study on Open Data

Roza Vasileva, Lucelia Rodrigues, Nancy Hughes, Chris Greenhalgh, Murray Goulden, Jeni Tennison

Subject: Computer Science And Mathematics, Computer Science Keywords: Smart city; smart campus; open data

Online: 3 September 2018 (09:39:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0067.v1

Low-cost Arduino-based Temperature Measuring System

Nazareno de Oliveira Pacheco, Giovani Batista, Anderson Fontes Estuqui, Lucas da Silva

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: open microcontrolled platform; data acquisition; remote measurement

Online: 8 March 2018 (15:21:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints201801.0096.v1

Two-Year Outcomes of Ab Interno Trabeculectomy with the Trabectome for Chinese Primary Open Angle Glaucoma: A Retrospective Multicenter Study

Yalong Dang, Xiao Wang, Yujie Cen, Ying Hong, Ping Huang, Nils Loewen, Chun Zhang

Subject: Medicine And Pharmacology, Ophthalmology Keywords: primary open-angle glaucoma; minimally invasive glaucoma surgery; ab interno trabeculectomy; intraocular pressure; success rate

Online: 11 January 2018 (04:01:57 CET)

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Working Paper ARTICLE

Badging for Sustainable Development: Applying EdTech Micro-Credentials for Advancing SDGs amongst Mountain and Pastoralist Societies

Randall Gwin, Marc Foggin

Subject: Social Sciences, Education Keywords: education; skills development; online distance learning; credentials; open badges; blockchain; sustainable livelihoods; sustainable mountain development; traditional knowledge; culture; Kyrgyzstan; Central Asia

Online: 27 March 2020 (03:07:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202107.0458.v2

Multi-channel Precision Bias Source for Experiments on Quantum dots

yumei tang, kefu liu, haixing sun

Subject: Engineering, Electrical And Electronic Engineering Keywords: quantum dots; bias source; multi-channel; high precision

Online: 9 August 2021 (18:17:09 CEST)

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Preprint REVIEW | doi:10.20944/preprints201805.0004.v1

The Pollutant Particle Size and Chemistry Matters

Rimantas Kodzius, Dana Khdr, Nima Rabiei, Asan Fattah, Xiaohong Wang, Jinfeng Liu, Xiuqing Gong, Samar Damiati

Subject: Environmental And Earth Sciences, Pollution Keywords: aerosols; Particulate Matter (PM); PM2.5; nanoparticles; toxicity; source; Organ-on-a-Chip (OoC)

Online: 1 May 2018 (09:54:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0100.v1

Pressure Distribution during Negative Pressure Wound Therapy of Experimental Abdominal Compartment Syndrome in a Porcine Model

Adrienn Csiszkó, Klaudia Balog, Zoltán Attila Godó, Gyula Juhász, Katalin Pető, Ádám Deák, Mariann Berhés, Norbert Németh, Zsolt Bodnár, Zsolt Szentkereszty

Subject: Medicine And Pharmacology, Clinical Medicine Keywords: intra-abdominal pressure; abdominal compartment syndrome; pressure sensor; negative pressure wound therapy; open abdomen;

Online: 11 January 2018 (09:17:10 CET)

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Preprint REVIEW | doi:10.20944/preprints201806.0036.v1

Molecular Aspects of Varicella-Zoster Virus Latency

Daniel P. Depledge, Tomohiko Sadaoka, Werner J. D. Ouwendijk

Subject: Biology And Life Sciences, Virology Keywords: varicella-zoster virus; latency; reactivation; sensory ganglia; VZV latency-associated transcript; open reading frame 63; RNA-sequencing; epigenetics; immunity

Online: 4 June 2018 (11:49:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202006.0207.v1

Conversion of Self-Contained Breathing Apparatus Mask to Open Source Powered Air-Purifying Particulate Respirator for Fire Fighter COVID-19 Response

Benjamin R. Hubbard, Joshua M. Pearce

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: open hardware; COVID-19; medical hardware; Powered Air-Purifying Respirator; PAPR; RepRap; 3-D printing; additive manufacturing; personal protective equipment; safety equipment

Online: 17 June 2020 (03:50:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0243.v2

Improving Quality-of-Service in LoRa Low-Power Wide-Area Networks through Optimized Radio Resource Management

Eduardo Sallum, Nuno Pereira, Mario Alves, Max Mauro Santos

Subject: Engineering, Electrical And Electronic Engineering Keywords: internet of things (IoT); low-power wide area network (LPWAN); mixed integer linear programming (milp); lorawan; lora simulator (lorasim); open-source; optimization; quality-of-service (qos); data extraction rate; packet collision rate; energy consumption; energy efficiency; network performance; protocol overhead; performance evaluation; performance improvement

Online: 6 November 2019 (03:57:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints201912.0140.v2

Surprising Behaviour of the Wageningen B-screw Series Polynomials

Stephan Helma

Subject: Engineering, Marine Engineering Keywords: propeller; wageningen b-screw series; open-water characteristics; propeller efficiency map; danckwardt diagram; optimum propeller

Online: 30 January 2020 (10:59:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202003.0073.v1

FAIR Digital Objects for Science: From Data Pieces to Actionable Knowledge Units

Koenraad De Smedt, Dimitris Koureas, Peter Wittenburg

Subject: Computer Science And Mathematics, Information Systems Keywords: digital object; data infrastructure; research infrastructure; data management; data science; FAIR data; open science; European Open Science Cloud; EOSC; persistent identifier

Online: 5 March 2020 (02:30:06 CET)

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Preprint REVIEW | doi:10.20944/preprints202105.0033.v1

Campylobacter: A Foodborne Pathogen with Emerging Antimicrobial Resistance

Amritanjali Kiran, Maria Josefina Ruiz Alvarez, Khine Swe Swe Han, Abishek Kumar, Dipanjan Chakraborty, Lawrence Mugisha, Hana Elbadawi, Yara Khalaf, Aparna Panicker, Sajini Souda, Maarten B.M. van Dongen

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Campylobacter; Antimicrobial Resistance; Foodborne Pathogen; Animal Source

Online: 5 May 2021 (11:05:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202010.0132.v1

pandapipes: an Open Source Piping Grid Calculation Package for the Application in Coupled Multi-Energy Grid Simulations

Daniel Lohmeier, Dennis Cronbach, Simon Ruben Drauz, Martin Braun, Tanja Manuela Kneiske

Subject: Engineering, Energy And Fuel Technology Keywords: sector coupling; gas grid; district heating grid; grid simulation; network analysis; grid operation; open source; multi-energy grids; energy supply; infrastructure design

Online: 6 October 2020 (14:48:08 CEST)

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Working Paper ARTICLE

Multimodal-Multisensory Experiments

Moein Razavi, Takashi Yamauchi, Vahid Janfaza, Anton Leontyev, Shanle Longmire-Monford, Joseph Orr

Subject: Social Sciences, Psychology Keywords: multimodal experiment; multisensory experiment; automatic device integration; open-source; PsychoPy; Unity; Virtual Reality (VR); Lab Streaming Layer; LabRecorder; LabRecorderCLI; Windows command line (cmd.exe)

Online: 12 October 2020 (07:06:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0182.v1

Overview of the French Operational Network for In Situ Observation of PM Chemical Composition and Sources in Urban Environments (CARA Program)

Olivier Favez, Samuël Weber, Jean-Eudes Petit, Laurent Y. Alleman, Alexandre Albinet, Véronique Riffault, Benjamin Chazeau, Tanguy Amodeo, Dalia Salameh, Yunjiang Zhang, Deepchandra Srivastava, Abdoulaye Samaké, Robin Aujay, Arnaud Papin, Nicolas Bonnaire, Carole Boullanger, Mélodie Chatain, Florie Chevrier, Anaïs Detournay, Marta Dominik-Sègue, Raphaële Falhun, Céline Garbin, Véronique Ghersi, Guillaume Grignion, Gilles Levigoureux, Sabrina Pontet, Jérôme Rangognio, Shouwen Zhang, Jean-Luc Besombes, Sébastien Conil, Gaelle Uzu, Joël Savarino, Nicolas Marchand, Valérie Gros, Caroline Marchand, Jean-Luc Jaffrezo, Eva Leoz-Garziandia

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: France; urban air quality; aerosol chemical composition; source apportionment; monitoring strategies

Online: 11 January 2021 (10:57:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202005.0479.v1

Open Source High-Temperature RepRap for 3-D Printing Heat-Sterilizable PPE and Other Applications

Noah G. Skrzypczak, Nagendra G. Tanikella, Joshua M. Pearce

Subject: Engineering, Mechanical Engineering Keywords: open source; open hardware; COVID-19; medical hardware; RepRap; 3-D printing; open source medical hardware; high temperature 3-D printing; additive manufacturing; ULTEM; polycarbonate

Online: 31 May 2020 (16:18:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0250.v1

Acid Dissolution of Neodymium Magnet Nd-Fe-B in Different Conditions

Akmaral Gazizovna Ismailova, Gulsara Zhakashovna Akanova, Duisek Khaissagalievich Kamysbayev

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: acid dissolution; neodymium magnet; open system; microwave sample preparation system; ICP-MS analysis

Online: 11 May 2021 (15:06:50 CEST)

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Preprint REVIEW | doi:10.20944/preprints201905.0066.v1

Chitin and Chitosans: Characteristics, Eco-Friendly Processes and Applications in Cosmetic Science

Cristina Casadidio, Dolores Vargas Peregrina, Maria Rosa Gigliobianco, Siyuan Deng, Roberta Censi, Piera Di Martino

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: chitin; chitosan; cosmetics; biodegradability; biomaterials; polysaccharides; green technology; marine cosmetic ingredients; marine green source; marine resources

Online: 6 May 2019 (12:37:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201905.0201.v1

Exploring the Future Development of Research, Technology and Business of Machine Tool Domain in New-Generation Information Technology Environment Based on Machine Learning

Jihong Chen, Kai Zhang, Yuan Zhou, Yufei Liu, Lingfeng Li, Zheng Chen, Li Yin

Subject: Engineering, Mechanical Engineering Keywords: future development analysis; machine tool; machine learning; multi-source data; topic model

Online: 16 May 2019 (10:20:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0492.v1

Grades of Openness. Open and Closed Articles in Norway

Susanne Mikki, Øyvind Liland Gjesdal, Tormod Eismann Strømme

Subject: Social Sciences, Library And Information Sciences Keywords: bibliometrics; publication statistics; open Access; citation impact

Online: 29 August 2018 (10:32:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0250.v1

Beach Sand Contaminated by Dog Walking? A Molecular Case Study

Elisabete Valério, Maria Leonor Santos, Pedro Teixeira, Ricardo Matias, João Mendonça, Warish Ahmed, João Brandão

Subject: Environmental And Earth Sciences, Environmental Science Keywords: beach; coastal sand; fecal contamination; FIB; microbial source tracking (MST)

Online: 19 May 2022 (04:18:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0279.v1

Willingness to Pay for Urban Water Body Recreational Facilities: A Case Study at Diyatha Uyana

Rangajeewa Ratnayake, Prem Wattege, Naduni Wickramaarachchi

Subject: Social Sciences, Sociology Keywords: contingent valuation method; open water body development; valuation of ecosystem; willingness to pay

Online: 30 January 2018 (06:53:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints201807.0114.v1

Performance Evaluation of the Physical and Combustion Properties of Briquettes Produced from Agro-Wastes and Wood Residues

Babajide Charles Falemara, Victoria Ibukun Joshua, Oluwaseyi Oluwafunmi Aina, Rivi David Nuhu

Subject: Chemistry And Materials Science, Biomaterials Keywords: biomass; briquette; combustion; density; energy source

Online: 6 July 2018 (09:48:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0026.v1

Accounting for Field-Scale Dry Deposition in Backward Lagrangian Stochastic Dispersion Modelling of NH₃ Emissions

Christoph Häni, Christophe Flechard, Albrecht Neftel, Jörg Sintermann, Thomas Kupper

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: atmospheric dispersion modelling; backward Lagrangian stochastic model; atmospheric surface-layer; micrometeorological techniques; gaseous emissions; atmospheric ammonia; dry deposition; grassland; open-path measurements; differential optical absorption spectroscopy

Online: 3 March 2018 (12:04:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0570.v1

White Mold on Pea Caused by Sclerotinia sclerotiorum: A New Threat for Pea Cultivation in Bangladesh

Md. Rabiul Islam, Ananya Prova, Md. Tanbir Rubayet, Md. Mahidul Islam Masum, Md. Motaher Hossain

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: apothecium; ascospores; sclerotium formation; carbon source; fungicides; resistance source

Online: 26 August 2020 (09:01:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201905.0029.v1

Multilingual Open Information Extraction: Challenges and Opportunities

Daniela Barreiro Claro, Marlo Souza, Clarissa Castellã Xavier, Leandro Oliveira

Subject: Computer Science And Mathematics, Information Systems Keywords: multilingual; open information extraction; parallel corpus

Online: 6 May 2019 (06:14:07 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints201905.0166.v1

Enabling a Conversation Across Scholarly Monographs through Open Annotation

Andrea C. Bertino, Heather Staines

Subject: Social Sciences, Library And Information Sciences Keywords: Open Annotation; Monographs; Open Access; Higher Education; Open Peer Review

Online: 14 May 2019 (10:03:41 CEST)

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Working Paper ARTICLE

Promoting Exercise in Urban Area: Importance of Green Space and Facility Accessibility

John W.M. Yuen, Katherine K.P. Chang, Frances K.Y. Wong, Fiona Y. Wong, Judy J. Siu, H.C. Ho, M.S. Wong, Janice Y.S. Ho, K.L. Chan, Lin Yang

Subject: Environmental And Earth Sciences, Environmental Science Keywords: physical activity; exercise; green cover; open space; Metabolic Equivalent of Task; International Physical Activity Questionnaire; health promotion

Online: 20 March 2019 (10:46:23 CET)

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Preprint REVIEW | doi:10.20944/preprints201805.0418.v1

Data Science in Education, Employment, Research: Data Revolution for Sustainable Development

Fionn Murtagh, Keith Devlin

Subject: Computer Science And Mathematics, Computer Science Keywords: big data training and learning; company and business requirements; ethics; impact; decision support; data engineering; open data; smart homes; smart cities; IoT

Online: 29 May 2018 (08:45:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0127.v1

Focal Plane Array Infrared Imaging of Linear Polymeric Patterns

Reo Honda, Meguya Ryu, Masayuki Moritake, Armandas Balcytis, Vygantas Mizeikis, Jitraporn Vongsvivut, Mark Tobin, Dominique Appadoo, Jing-Liang Li, Soon Hock Ng, Saulius Juodkazis, Junko Morikawa

Subject: Chemistry And Materials Science, Nanotechnology Keywords: focal plane array, thermal source, synchrotron radiation, infrared spectroscopy, hyperspectral imaging, silk, SZ2080

Online: 11 March 2019 (09:38:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0649.v1

Source-Sink Manipulation Affects Accumulation of Zinc and Other Nutrient Elements in Wheat Grains

Lan Wang, Haiyong Xia, Xiaojing Li, Yuetong Qiao, Yanhui Xue, Xilong Jiang, Wei Yan, Yumin Liu, Yanfang Xue, Lingan Kong

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: wheat; micronutrient; macronutrient; source-sink regulation; biofortification; phytate; bioavailability

Online: 25 March 2021 (17:17:10 CET)

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In order to better understand the source-sink flow and relationships of Zinc (Zn) and other nutrients in wheat (Triticum aestivum L.) plants for biofortification and improving grain nutritional quality, effects of reducing photoassimilate source (through the flag leaf removal and spike shading) or sink (through 50% spikelets removal) in the field on accumulation of Zn and other nutrients in wheat grains of two cultivars (Jimai 22 and Jimai 44) were investigated under two soil Zn application levels. The single panicle weight (SPW), kernel number per spike (KNPS), thousand kernel weight (TKW), total grain weight (TGW), concentrations and yields of various nutrient elements (Zn, Fe, Mn, Cu, N, P, K, Ca and Mg), phytate phosphorus (phytate-P), phytic acid (PA) and phytohormones (ABA: abscisic acid, and the ethylene precursor ACC: 1-aminocylopropane-1-carboxylic acid), and C/N ratios were determined. Soil Zn application significantly increased concentrations of grain Zn, N and K. Cultivars showing higher grain yields had lower grain protein and micronutrient nutritional quality. SPW, KNPS, TKW (with an exception of TKW in half spikelets removal), TGW, and nutrient yields in wheat grains were most severely reduced by half spiklets removal, secondly by spike shading, and slightly by flag leaf removal. Grain concentrations of Zn, N and Mg consistently showed negative correlations with SPW, KNPS and TGW, but positively with TKW. There were general positive correlations among grain concentrations of Zn, Fe, Mn, Cu, N and Mg, and bioavailability of Zn and Fe (estimated by molar ratios of PA/Zn, PA × Ca/Zn, PA/Fe, or PA × Ca/Fe). Although concentrations of Zn and Fe were increased and Ca was decreased in treatments of half spikelets removal and spike shading, the simultaneously increased PA limited the increase in bioavailability of Zn and Fe. In general, different nutrient elements interact with each other and are affected to different degrees by source-sink manipulations. Elevated endogenous ABA levels and ABA/ACC ratios were associated with increased TKW and grain-filling of Zn, Mn, Ca and Mg, and inhibited K in wheat grains. However, effects of ACC were diametrically opposite. These results provide basis for wheat grain biofortification to alleviate human malnutrition.

Preprint REVIEW | doi:10.20944/preprints202105.0026.v2

Ethical Issues Concerning the Use of Data from Commercially Available Wearable Sensors in Children

Andrie G. Panayiotou, Evangelos D. Protopapadakis

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: wearable devices; ethics; children; privacy; large data; right to an open future; living in the spot-light

Online: 25 June 2021 (11:00:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0448.v1

Did you Ask for Citations? An Insight into Preprint Citations en route to Open Science

Mario Pagliaro

Subject: Business, Economics And Management, Accounting And Taxation Keywords: preprint; citations; scholarly communication; open science; peer review; impact factor

Online: 16 April 2021 (16:45:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0651.v1

Opensync: An Opensource Platform for Synchronizing Multiple Measures in Neuroscience Experiments

Moein Razavi Ghods, Vahid Janfaza, Takashi Yamauchi, Anton Leontyev, Shanle Longmire-Monford, Joseph Orr

Subject: Social Sciences, Psychology Keywords: multiple measures synchronization; automatic device integration; open-source; PsychoPy; Unity

Online: 29 July 2021 (11:48:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0010.v1

The Effect of Propeller Scaling Methodology on the Performance Prediction

Stephan Helma, Heinrich Streckwall, Jan Richter

Subject: Engineering, Marine Engineering Keywords: propeller scale effects; propeller open-water efficiency; surface roughness; equivalent profile; strip method; betai method

Online: 1 March 2018 (15:58:14 CET)

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Working Paper ARTICLE

Ancestral Area Reconstruction of SARS-CoV-2 Indicates Multiple Sources of Entry into Australia

Ngoc Minh Hien Phan, Helen Faddy, Robert Flower, Kirsten Spann, Eileen Roulis

Subject: Biology And Life Sciences, Virology Keywords: SARS-CoV-2; COVID-19; novel severe acute respiratory syndrome coronavirus 2; ancestral reconstruction; clonality; source of entry; dispersal routes

Online: 28 June 2020 (09:21:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0284.v1

Elimination of Common-mode Voltage in Dual Two-level Voltage Source Inverter Fed Open-end Load using a Discontinuous SVM Technique

Nuttawout Buarat, Yuttana Kumsuwan

Subject: Engineering, Electrical And Electronic Engineering Keywords: dual two-level voltage source inverter; common-mode voltage; discontinuous space vector modulation schemes; centralizing pulse width modulation; open-end load

Online: 22 May 2018 (05:11:06 CEST)

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Preprint REVIEW | doi:10.20944/preprints202105.0044.v1

A Socio-Technical Perspective on the Application of Green Ergonomics to Open-Plan Offices

Thomas A. Norton, Oluremi B. Ayoko, Neal M. Ashkanasy

Subject: Social Sciences, Psychology Keywords: Open-plan office; socio-technical systems; green ergonomics; biophilic design; sustainable development; human factors.

Online: 5 May 2021 (12:20:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0722.v1

Bianchi Type I Cosmological Models with Expansion Driven by Particle Creation

Kalyani Desikan

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmology; Bianchi Type I; particle creation; open thermodynamic system; constant deceleration parameter; accelerated expansion; late time acceleration

Online: 30 October 2018 (09:36:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0395.v1

The Pioneering Role of Sci in Post Publication Public Peer Review (P4R)

Ahmad Yaman Abdin, Muhmmad Jawad Nasim, Yannick Ney, Claus Jacob

Subject: Social Sciences, Library And Information Sciences Keywords: commenting options; open access publishing; peer review; public assessment; reward system; Sci; volunteers

Online: 20 January 2021 (09:51:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints201804.0148.v1

Moving Source Depth Estimation Using a Horizontal Line Array in Shallow Water Waveguides

Liang Guolong, Zhang Yifeng, Zou Nan, Wang Jinjin

Subject: Physical Sciences, Acoustics Keywords: modal wave-number spectrum; match mode; horizontal line array; moving source

Online: 11 April 2018 (12:42:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0138.v1

Software Defined Networks in Industrial Automation

Khandakar Ahmed, Jan O. Blech, Mark A. Gregory, Heinrich Schmidt

Subject: Computer Science And Mathematics, Information Systems Keywords: controller; industry network; open flow; software defined networking; programmable logic controller

Online: 8 June 2018 (13:35:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0082.v2

End Point Rate Tool for QGIS (EPR4Q): Validation Using DSAS and AMBUR

Lucas Terres de Lima, Sandra Fernández-Fernández, Jean Marcel de Almeida Espinoza, Miguel da Guia Albuquerque, Cristina de Almeida Bernardes

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Shoreline Evolution; Open-Source Software; GIS; Modeling

Online: 19 February 2021 (09:46:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints201806.0041.v1

Hybrid PV-Wind Micro-Grid Development Using Quasi-Z-Source Inverter Modeling and Control –Experimental Investigation

Neeraj Priyadarshi, Sanjeevikumar Padmanaban, Dan M. Ionel, Lucian Mihet-Popa, Farooque Azam

Subject: Engineering, Electrical And Electronic Engineering Keywords: PV; MPRVS; quasi Z-source inverter; MPP; SEPIC converter

Online: 4 June 2018 (12:19:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0233.v1

Belt-Driven Open Source Circuit Mill Using Low-Cost 3-D Printer Components

Shane Oberloier, Joshua Pearce

Subject: Engineering, Electrical And Electronic Engineering Keywords: 3-D printing; circuit milling; circuit design; distributed manufacturing; electronics; electronics prototyping; free and open-source hardware; P2P; P2P manufacturing

Online: 13 August 2018 (16:42:54 CEST)

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Working Paper ARTICLE

Parametric Open Source Cold-Frame Agrivoltaic System

Joshua M. Pearce

Subject: Engineering, Energy And Fuel Technology Keywords: additive manufacturing; agriculture; agrivoltaic; distributed manufacturing; farming; gardening; open hardware; photovoltaic; recycling; solar energy

Online: 27 September 2021 (11:03:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0207.v1

Open Source Completely 3-D Printable Centrifuge

Salil S. Sule, Aliaksei L. Petsiuk, Joshua M. Pearce

Subject: Medicine And Pharmacology, Other Keywords: 3-D printing; additive manufacturing; biomedical equipment; biomedical engineering; centrifuge; design; distributed manufacturing; laboratory equipment; open hardware; open source; open source hardware; medical equipment; medical instrumentation; scientific instrumentation

Online: 18 April 2019 (08:03:58 CEST)

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Preprint SHORT NOTE | doi:10.20944/preprints202001.0196.v1

A Guide and Toolbox to Replicability and Open Science in Entomology

Jacob Wittman, Brian Aukema

Subject: Biology And Life Sciences, Insect Science Keywords: reproducibility; open access; data curation; data mangement; pre-print servers

Online: 18 January 2020 (09:05:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints201802.0009.v1

On the Performance of the Cache Coding Protocol

Behnaz Maboudi, Hadi Sehat, Peyman Pahlevani, Daniel E. Lucani

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: Cache Coding, Source Coding, Absorbing Markov Chain

Online: 1 February 2018 (16:45:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints201804.0318.v2

Techno-Economic Feasibility of Hybrid Solar Photovoltaic and Battery Energy Storage Power System for a Soshanguve Mobile Cellular Base Station in South Africa

Banjo Ayoade Aderemi, SP Daniel Chowdhury, Thomas O. Olwal, Adnan M. Abu-Mahfouz

Subject: Engineering, Electrical And Electronic Engineering Keywords: Solar PV, Green Energy, Hybrid Power Source, Mobile Cellular Base Station, OPEX, Solar Irradiance

Online: 25 July 2018 (14:30:45 CEST)

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Over the years, sustainability, impact on the environment, as well as the operation expenditure have been a major concern to the deployment of mobile cellular base stations worldwide. This is because the mobile cellular base stations are known to consume a high percentage of power within the mobile cellular network. Such energy consumption contributes to the emission of Greenhouse Gases (GHG) through the use of conventional diesel generating a set. As a result, the mobile cellular operators are faced with the dilemma of minimising the power consumption, GHG emission, and the operation cost, while improving the Quality of Service of the networks. In attempting to find a solution, this study presents the feasibility and simulation of a solar photovoltaic (PV) with battery hybrid power system (HPS) as a predominant source of power for a specific mobile cellular base station site situated in Soshanguve area of the city of Pretoria, South Africa. It also presents the technical development, showed the environmental advantage and cost benefits of using a solar PV-battery HPS to power a base station site of a 24 hrs daily load of 241.10 kWh/d and the peak load of 20.31 kW as compared to using the HPS of solar PV-diesel generating set-battery. The solar resource pattern for the city of Pretoria was collected from The National Aeronautics and Space Administration and modelled statistically. Thus, the statistical modelling done using solar radiation resource exposure characteristic patterns of Pretoria, South Africa, revealed an average annual daily solar radiation of 5.4645 Wh/m2/d and 0.605 clearness index. The simulation and the design were done using the Hybrid Optimization Model for Electric Renewables and Matlab/Simulink software. The simulation finding shows that the HPS of solar PV-battery combination has about 59.62 % saving on Net Present Cost, Levelized Cost of Energy, and 80.87% saving on Operating cost as against conventional BS powered with Gen Set-Battery.

Preprint ARTICLE | doi:10.20944/preprints202003.0163.v1

An Integrated Conceptual Framework for ICT-based Market Information Source Adoption among Smallholder Farmers

Christopher Nwafor

Subject: Computer Science And Mathematics, Information Systems Keywords: information source; smallholder farmers; ICTs; adoption; conceptual framework; sub-Sahara Africa

Online: 10 March 2020 (10:29:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints201908.0070.v1

Globalization of Russian Cities: Towards a Construction of Large Urban Regions

Mikhail Rogov, Céline Rozenblat

Subject: Social Sciences, Geography, Planning And Development Keywords: city; large urban regions; Russia; globalization; open database

Online: 6 August 2019 (08:33:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0113.v1

Blind Source Separation for NMR Spectra with Negative Intensity

Ryan J. McCarty, Nimish Ronghe, Mandy Woo, Todd M. Alam

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: Blind Source Separation; Component Analysis; Chemometrics; Unsupervised Machine Learning; Endmember Extraction; Spectral Unmixing; NMR

Online: 9 February 2020 (17:18:38 CET)

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NMR spectral datasets, especially in systems with limited samples, can be difficult to interpret if they contain multiple chemical components (phases, polymorphs, molecules, crystals, glasses, etc…) and the possibility of overlapping resonances. In this paper, we benchmark several blind source separation techniques for analysis of NMR spectral datasets containing negative intensity. For benchmarking purposes, we generated a large synthetic datasbase of quadrupolar solid-state NMR-like spectra that model spin-lattice T1 relaxation or nutation tip/flip angle experiments. Our benchmarking approach focused exclusively on the ability of blind source separation techniques to reproduce the spectra of the underlying pure components. In general, we find that FastICA (Fast Independent Component Analysis), SIMPLISMA (SIMPLe-to-use-Interactive Self-modeling Mixture Analysis), and NNMF (Non-Negative Matrix Factorization) are top-performing techniques. We demonstrate that dataset normalization approaches prior to blind source separation do not considerably improve outcomes. Within the range of noise levels studied, we did not find drastic changes to the ranking of techniques. The accuracy of FastICA and SIMPLISMA degrades quickly if excess (unreal) pure components are predicted. Our results indicate poor performance of SVD (Singular Value Decomposition) methods, and we propose alternative techniques for matrix initialization. The benchmarked techniques are also applied to real solid state NMR datasets. In general, the recommendations from the synthetic datasets agree with the recommendations and results from the real data analysis. The discussion provides some additional recommendations for spectroscopists applying blind source separation to NMR datasets, and for future benchmark studies. Applications of blind source separation to NMR datasets containing negative intensity may be especially useful for understanding complex and disordered systems with limited samples and mixtures of chemical components.

Preprint ARTICLE | doi:10.20944/preprints201906.0294.v1

is*-Open Sets, is*- Mappings and is*-separation Axioms in Topological Spaces

Omar Khattabomar

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: is*-open set, is*-continuous, is*-open, is*-irresolute, is*-totally continuous, is-contra-continuous mappings, is*-separation

Online: 28 June 2019 (11:45:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0575.v1

Open-Ended Descriptions of Religious/Spiritual Struggles: Salient Themes and Associations with the Religious and Spiritual Struggles (RSS) Scale and Religiousness

Joshua A. Wilt, Joyce T. Takahashi, Peter Jeong, Julie J. Exline, Kenneth I. Pargament

Subject: Social Sciences, Psychology Keywords: Religious and spiritual struggles; open-ended items; closed-ended items; religious belief salience

Online: 24 July 2020 (10:06:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0113.v1

Effects of Machine Learning Approach in Flow Based Anomaly Detection on Software Defined Networking

Samrat Kumar Dey, Md. Mahbubur Rahman

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: software defined networking; random forest; gain ratio; gru-lstm; anova f-rfe; open flow controller; machine learning

Online: 10 November 2019 (14:27:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0454.v1

Cooperative Functioning of Unconscious and Consciousness From Theory of Open Quantum Systems

Andrei Khrennikov

Subject: Social Sciences, Psychology Keywords: unconscious; consciousness; quantum-like models; decision making; indirect measurement scheme; open quantum systems; sensation; perception

Online: 17 March 2021 (16:58:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0008.v1

Enabling Fine-Grained Scientific Citation for GRASS GIS Software Modules

Peter Loewe, Vaclav Petras, Markus Neteler, Helena Mitasova

Subject: Computer Science And Mathematics, Computer Science Keywords: GRASS GIS; g.citation; software citation; open science; OSGeo; credit; rewards

Online: 1 April 2019 (10:19:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0182.v1

Tourism Sustainability Index: Measuring Tourism Sustainability Based on the ETIS Toolkit, by Exploiting Tourist Satisfaction via Sentiment Analysis

Damiano De Marchi, Rudy Becarelli, Leonardo Di Sarli

Subject: Social Sciences, Tourism, Leisure, Sport And Hospitality Keywords: Tourism; Measuring sustainability; Tourist satisfaction; E-reputation; Sustainable development; Sentiment analysis; ETIS; Open data; Geospatial Index

Online: 13 May 2022 (07:58:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0043.v1

Composition, Sources of PM_2.5 Saccharides and Its Characteristics during the Haze Episode in Shanghai

Mengxin Xiao, Qiongzhen Wang, Xiaofei Qin, Guangyuan Yu, Congrui Deng

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: saccharides; biomass burning; haze; source apportionment; bio-aerosol

Online: 4 June 2018 (12:47:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0513.v1

Development of Tools for Coastal Management in Google Earth Engine: Uncertainty Bathtub Model and Bruun Rule

Lucas Terres de Lima, Sandra Fernández-Fernández, João Francisco Gonçalves, Luiz Magalhães Filho, Cristina Bernardes

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Sea-Level Rise; GIS; Open-Source Software; Modeling

Online: 23 February 2021 (12:39:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202302.0010.v2

Machine Learning for Healthcare: A Bibliometric Study of Contributions from Africa

Houcemeddine Turki, Houda Sekkal, Anastassios Pouris, Francis-Alfred Michaelangelo Ifeanyichukwu, Catherine Namayega, Hanae Lrhoul, Mohamed Ali Hadj Taieb, Sadiq Adewale Adedayo, Chris Fourie, Christopher Brian Currin, Mercy Nyamewaa Asiedu, Atnafu Lambebo Tonja, Abraham Toluwase Owodunni, Abdulhameed Dere, Chris Chinenye Emezue, Shamsuddeen Hassan Muhammad, Muhammad Musa Isa, Mus'ab Banat, Mohamed Ben Aouicha

Subject: Social Sciences, Library And Information Sciences Keywords: Machine learning; Scientometrics; Africa; Research community; Open science; Health informatics

Online: 3 May 2023 (14:43:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0073.v1

Heat Source Modeling in Selective Laser Melting

Elham Mirkoohi, Daniel E. Seivers, Hamid Garmestani, Steven Y. Liang

Subject: Engineering, Mechanical Engineering Keywords: temperature field; additive manufacturing; selective laser melting; heat source modeling

Online: 10 June 2019 (09:25:58 CEST)

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Selective laser melting is an emerging Additive Manufacturing (AM) technology for metals. Intricate three-dimensional parts can be generated from the powder bed by selectively melting the desired location of the powders. The process is repeated for each layer until the part is built. The necessary heat is provided by a laser. Temperature magnitude and history during SLM directly determine the molten pool dimensions, thermal stress, residual stress, balling effect, and dimensional accuracy. Laser-matter interaction is a crucial physical phenomenon in the SLM process. In this paper, five different heat source models are introduced to predict the three-dimensional temperature field analytically. These models are known as steady state moving point heat source, transient moving point heat source, semi-elliptical moving heat source, double elliptical moving heat source, and uniform moving heat source. The analytical temperature model for all of the heat source models are solved using three-dimensional differential equation of heat conduction with different approaches. The Steady state and transient moving heat source are solved using separation of variables approach. However, the rest of models are solved by employing the Green’s functions. Due to the high magnitude of the temperature in the presence of the laser, the temperature gradient is usually high which has a substantial impact on thermal material properties. Consequently, the temperature field is predicted by considering the temperature sensitivity thermal material properties. Moreover, due to the repeated heating and cooling, the part usually undergoes several melting and solidification cycles, this physical phenomenon is considered by modifying the heat capacity using latent heat of melting. Furthermore, the multi-layer aspect of metal AM process is considered by incorporating the temperature history from the previous layer since the interaction of the layers have an impact on heat transfer mechanisms. The proposed temperature field models based on different heat source approaches are validated using experimental measurement of melt pool geometry from independent experimentations. The detailed explanation of the comparison of models is also provided. Moreover, the effect of process parameters on the balling effect is also discussed.

Preprint ARTICLE | doi:10.20944/preprints201810.0215.v1

Street Dust - Bound Polycyclic Aromatic Hydrocarbons in Saudi Coastal City: Status, Profile, Sources, and Human Health Risk Assessment

Ibrahim I. Shabbaj, Mansour A. Alghamdi, Mamdouh I. Khoder

Subject: Environmental And Earth Sciences, Environmental Science Keywords: street dust; PAHs; source evaluation; incremental lifetime cancer risk; cancer risk assessment; coastal city

Online: 10 October 2018 (10:49:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0141.v2

Fixing Efficiency Values by Unfixing Compressor Speed: Dynamic Test Method for Heat Pumps

Carsten Palkowski, Andreas Zottl, Ivan Malenkovic, Anne Simo

Subject: Engineering, Energy And Fuel Technology Keywords: heat pump; dynamic test method; seasonal performance factor; variable frequency drive; field approximation; energy label; air source heat pump; ground source heat pump

Online: 15 March 2019 (04:40:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202109.0406.v1

An Array Multi-Physics Acquisition System with Focus on Reservoir Monitoring

Kurt Martin Strack, Andri Yadi Paembonan, Sofia N. Davydycheva, Tilman Hanstein, Maxim Y Smirnov

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: Array electromagnetics, magnetotellurics, controlled source electromagnetics, microseismics, reservoir monitoring, enhanced oil recovery, recovery factor improvement

Online: 23 September 2021 (12:27:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0282.v1

A Multi-Decadal Change Analysis for Irrigation Ponds in Taoyuan, Taiwan Using Multi-source Data

Yen-Ching Chen, Wei-Chun Lin, Lin-Hsuan Hsiao, Ke-Sheng Cheng

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: land-use/land-cover; multi-decadal change analysis; irrigation ponds; textural features; supervised classification; multi-source data

Online: 18 June 2018 (16:40:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0273.v1

Russian-German Astroparticle Data Life Cycle Initiative

Igor Bychkov, Andrey Demichev, Julia Dubenskaya, Oleg Fedorov, Andreas Haungs, Andreas Heiss, Yulia Kazarina, Elena Korosteleva, Dmitriy Kostunin, Alexander Kryukov, Andrey Mikhailov, Minh-Duc Nguyen, Stanislav Polyakov, Evgeny Postnikov, Alexey Shigarov, Dmitry Shipilov, Achim Streit, Viktoria Tokareva, Doris Wochele, Jürgen Wochele, Dmitry Zhurov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: astroparticle physics, cosmic rays, data life cycle management, data curation, meta data, big data, deep learning, open data

Online: 12 October 2018 (14:48:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0016.v1

OpenMethods: A Compass for a More Open Digital Humanities

Gimena del Rio Riande, Erzsébet Tóth-Czifra, Ulrike Wuttke, Yoann Moranville

Subject: Social Sciences, Library And Information Sciences Keywords: open research practices; digital humanities; scholarly communication; publication formats; infrastructure; research methodology; research tools

Online: 1 March 2020 (15:50:52 CET)

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Working Paper ARTICLE

Unveiling Signatures of Topological Phases in Open Kitaev Chains and Ladders

Alfonso Maiellaro, Francesco Romeo, Carmine Antonio Perroni, Vittorio Cataudella, Roberta Citro

Subject: Physical Sciences, Condensed Matter Physics Keywords: open topological systems; Kitaev chains and ladders; Majorana fermions

Online: 14 June 2019 (09:41:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0071.v1

Data Governance and Sovereignty in Urban Data Spaces Based on Standardized ICT Reference Architectures

Silke Cuno, Lina Bruns, Nikolay Tcholtchev, Philipp Lämmel, Ina Schieferdecker

Subject: Engineering, Electrical And Electronic Engineering Keywords: data governance; data sovereignty; urban data spaces; ICT reference architecture; open urban platform

Online: 6 December 2018 (05:09:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0387.v1

Purposeful Evaluation of Scholarship in the Open Science Era

Mario Pagliaro

Subject: Social Sciences, Education Keywords: Scholarship evaluation; Tenure and promotion; Teaching and mentoring; Researcher evaluation; Academic career; Open science

Online: 19 January 2021 (16:37:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0045.v1

A Systems Analysis Approach to Identifying Critical Success Factors in Drinking Water Source Protection Programs

Hew Cameron Merrett, Wei Tong Chen, Jao Jia Horng

Subject: Engineering, Civil Engineering Keywords: Drinking Water Source Protection; Drinking Water Safety; System Theoretic Process Analysis; Principle Components Analysis; Hazard Analysis.

Online: 3 April 2019 (11:43:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202111.0478.v1

You + ME Registry: A Research Platform to Facilitate Clinical and Therapeutic Discoveries in ME/CFS and Related Diseases

Allison Ramiller, Kathleen Mudie, Elle Seibert, Sadie Whittaker

Subject: Medicine And Pharmacology, Pathology And Pathobiology Keywords: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome; Long COVID; data acquisition source; post-infectious; longitudinal cohort study; patient-powered

Online: 25 November 2021 (13:51:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints202005.0159.v1

Rural Smallholder Farmers' Awareness and Use of ICT-Based Market Information Sources in South Africa

Christopher Nwafor, Carlu van der Westhuizen, Abiodun Ogundeji

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: awareness; livestock farmer; ICT-source; market information; rural; smallholder

Online: 9 May 2020 (08:46:42 CEST)

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Working Paper ARTICLE

Exploiting Linguistic Knowledge for Low-Resource Neural Machine Translation

Yirong Pan, Xiao Li, Yating Yang, Rui Dong

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: linguistic knowledge; source language; neural machine translation (NMT); low-resource; multi-source NMT

Online: 2 March 2020 (15:28:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0453.v1

Derivation of Coulomb's Law Based on a Mechanical Model of Electromagnetic Field and a Spherical Source and Sink Model of Electric Charges

Xiao-Song Wang

Subject: Physical Sciences, Acoustics Keywords: Coulomb's Law; spherical source; spherical sink; electromagnetic aether; Lorentz's force law; hydrodynamics; fluid mechanics; vacuum mechanics

Online: 22 January 2021 (14:21:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0103.v1

Converter-driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources

Jianqiang Luo, Yiqing Zou, Siqi Bu

Subject: Engineering, Electrical And Electronic Engineering Keywords: Converter-driven stability; hybrid renewable energy source (HRES) system; modal resonance; full converter-based wind power generation (FCWG); full converter-based photovoltaic generation (FCPV)

Online: 6 May 2021 (15:14:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0421.v1

Development of Tools for Coastal Management in Google Earth Engine: Uncertainty Bathtub Model and Bruun Rule

Lucas Terres de Lima, Sandra Fernández-Fernández, João Francisco Gonçalves, Luiz Magalhães Filho, Cristina Bernardes

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Sea-Level Rise; GIS; Open-Source Software; Modeling

Online: 18 February 2021 (13:52:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints202106.0667.v1

Air Quality in the Italian Northwestern Alps during Year 2020: Assessment of the COVID-19 «Lockdown Effect» from Multi-Technique Observations and Models

Henri Diémoz, Tiziana Magri, Giordano Pession, Claudia Tarricone, Ivan Karl Friedrich Tombolato, Gabriele Fasano, Manuela Zublena

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: COVID-19; air quality; nitrogen oxides; ozone; aerosol; source apportionment; aerosol profiles; models; Alps; Italy

Online: 28 June 2021 (14:37:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0472.v1

Open Source Digitally Replicable Lab-Grade Scales

Benjamin R. Hubbard, Joshua M. Pearce

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: 3-D printing; additive manufacturing; distributed manufacturing; laboratory equipment; open hardware; open source; open source hardware; scale; balance; mass

Online: 27 April 2020 (02:59:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0409.v1

DC-link Current Harmonic Mitigation via Phase-shifting of Carrier Waves in Paralleled Inverter Systems

Silpa Baburajan, Haoran Wang, Dinesh Kumar, Qian Wang, Frede Blaabjerg

Subject: Engineering, Electrical And Electronic Engineering Keywords: DC-link current; harmonic mitigation; voltage source inverters; multi-converter systems; carrier wave interleaving scheme; DC-grid; phase-shifting; capacitor current ripple; unipolar sinusoidal pulse width modulation

Online: 15 June 2021 (14:26:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202012.0814.v2

Order-Stability in Complex Biosystems from the Viewpoint of the Theory of Open Quantum Systems

Andrei Khrennikov, Noboru Watanabe

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: biosystems; order-stability; classical versus quantum entropy; open quantum systems; quantum channel; entanglement

Online: 5 February 2021 (22:04:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints201907.0327.v2

Implications of Hf Isotopes for the Evolution of the Mantle Source of Magmas Associated with the Giant El Teniente Cu-Mo Megabreccia Deposit, Central Chile

Charles R. Stern, Kwan-Nang Pang, Hao-Yang Lee, M. Alexandra Skewes, Alejandra Arévalo

Subject: Environmental And Earth Sciences, Geochemistry And Petrology Keywords: El Teniente Cu-Mo deposit; Andean magmatism; subduction erosion; mantle source region contamination; hafnium isotopes

Online: 8 September 2019 (17:22:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0223.v1

The Potential of Variable Renewable Energy Sources in Mexico: A Temporally-Evaluated and Geospatially-Constrained Techno-Economical Assessment

Edgar Ubaldo Pena Sanchez, Severin David Ryberg, Heidi Ursula Heinrichs, Detlef Stolten, Martin Robinius

Subject: Engineering, Automotive Engineering Keywords: Renewable energy; land eligibility analysis; onshore wind; open-field photovoltaics; Mexico; renewable potential; technical potential

Online: 9 July 2021 (13:23:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0099.v1

Expected Participation and Mentality of Smart Citizen in Smart Cities

Katalin Feher

Subject: Social Sciences, Urban Studies And Planning Keywords: smart city; smart citizen; participation; smartmentality; open data; metaphor

Online: 5 November 2018 (10:19:03 CET)

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Working Paper ARTICLE

A New 3D Geological Modeling Method Based On Remote Sensing and Its Application in Ya 'an Area Sichuan Province

Zhaoyang Ma, Lihai Zhang, Yan Wang, Guifan Zhu, Yinping Liang

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Multi-source heterogeneity; remote sensing; large-scale high-precision modeling; grid division; geostatistics; spatial interpolation

Online: 20 January 2021 (16:19:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0629.v1

Multiscale Hydro-Meteorological Factors Variations and Its Links to Large-Scale Atmospheric Circulation Systems in the Source Region of Yangtze River

Jian Tang, Hui-Qun Cao

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: hydro-meteorological factors; large-scale atmospheric circulation systems; South Asia monsoon; streamflows; source region of the Yangtze River

Online: 26 October 2018 (11:52:13 CEST)

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Preprint REVIEW | doi:10.20944/preprints202110.0390.v1

Biological Contamination: A Serious Constraint in Large Scale Microalgae Biomass Production

Bidhu Bhusan Makut, Saubhagya Manjari Samantaray

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: Biological contaminants; grazers; microalgae; open cultivation; biopesticides

Online: 26 October 2021 (14:36:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0080.v1

Animal Source Food Consumption in Young Children from Four Regions of Ethiopia: Association with Religion, Livelihood, and Participation in the Productive Safety Net Program

Kaitlin S. Potts, Afework Mulugeta, Alessandra N. Bazzano

Subject: Biology And Life Sciences, Food Science And Technology Keywords: child nutrition disorders; animal source foods; diet; food and nutrition; dietary diversity; food assistance

Online: 9 January 2019 (07:49:09 CET)

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Introduction: Child undernutrition remains a challenge globally and in the geographically diverse country of Ethiopia. Improving dietary diversity and consumption of animal source foods are important for improving child nutrition and corresponding health outcomes. Objective: The objective of the study was to identify household and community factors associated with consumption of animal source foods among 6 to 36-month-old children from four regions of Ethiopia. Methods: A cross-sectional survey using multistage probability sampling in eight geographic zones and four regions of Ethiopia took place in 2015 with parents/caretakers of 6 to 36-month-old children. Data was collected on demographic information, proxy indicators of socioeconomic status, and food consumed by the child the day before the survey. Results: Increased child age, pastoral livelihood, Muslim religion, and participation in the Productive Safety Net Program were associated with increased consumption of animal source foods. Odds of animal source foods consumption increased 8% with each 3-month age increase. Children from pastoralist households were the most likely to have consumed animal source foods in the preceding 24 hours as compared with those in agro-pastoralist households (0.21 times as likely) or those in agriculturalist/farming households (0.15 times as likely). The odds of consumption of animal source foods for families with food aid or safety net support was 1.7 times greater among those receiving traditional support from the Productive Safety Net Program and 4.5 times greater for those in the direct support arm of the program. Conclusions: The findings illustrate the importance of accounting for local context and community characteristics, such as livelihood and religion, when undertaking programming designed to improve diversity of children’s diets through increasing animal source foods. In addition, the Productive Safety Net program may be a critical determinant of dietary diversity for young children in these regions.

Preprint ARTICLE | doi:10.20944/preprints201807.0570.v1

Towards End-to-End Acoustic Localization Using Deep Learning: From Audio Signal to Source Position Coordinates

Juan Manuel Vera-Diaz, Daniel Pizarro, Javier Macias-Guarasa

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: acoustic source localization; microphone arrays; deep learning; convolutional neural networks

Online: 30 July 2018 (09:37:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0517.v1

Effects of Neurofeedback in the Working Memory of Children with Learning Disorders: An EEG Power-Spectrum Analysis

Benito Javier Martínez-Briones, Jorge Bosch-Bayard, Rolando Jose Biscay-Lirio, Lucero Albarrán-Cárdenas, Juan Silva-Pereyra, Thalía Fernández

Subject: Social Sciences, Psychology Keywords: Neurofeedback; Learning Disorders; Working Memory; School-age Children; EEG Power Spectrum; Source Localization

Online: 21 May 2021 (09:53:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0152.v1

Can The Advantages Of Video Assisted Thoracoscopic Lobectomy Be Reproduced In A Low Volume Center?

Shagufta Shaheen, Salman Otoukesh, Brice Jabo, Manmeet Kaur, Nicole Wheeler, Said Mirshahidi, Salman Zaheer, Hamid R. Mirshahidi

Subject: Medicine And Pharmacology, Surgery Keywords: video assisted thoracic surgery, open thoracotomy, recurrence-free survival, overall survival, positive margins, postoperative length of stay.

Online: 8 October 2018 (15:23:21 CEST)

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Background: Video assisted thoracoscopic surgery (VATS) has become the recommended approach for treatment of resectable lung cancer. However, no large randomized clinical trial has been conducted formally comparing surgical resections completed by VATS to those done by open thoracotomy (OT) in low volume centers. The current study sought to assess differences in recurrence-free survival (RFS), overall survival (OS), positive margins and postoperative length of stay (LOS) between VATS and OT lobectomies in our center. Method: A single institution retrospective chart review from May 2005 through May 2015 was conducted. All patients diagnosed with stage I through III lung cancer who underwent surgical resection were selected. Patient and tumor characteristics recorded included age at diagnosis, sex, tobacco use, tumor location (side and lobe), stage, size and receipt of chemotherapy or radiotherapy. Chis-square and Wilcoxon-Mann-Whitney tests were used to compare demographics, tumor characteristics and LOS. Multiple logistic and Cox regression analyses were used to compute relative risk (RR) for positive margins and mortality hazard ratios along with 95 percent confidence intervals (95%CI), respectively. Results: Of the 235 patients, 101 subjects had VATS while OT was performed in 134 patients. Age at diagnosis, sex, tobacco use, tumor location, and size were comparable for VATS and OT. No significant difference was observed in the relative risk of positive margins for VATS versus OT, RR = 0.56 (95%CI = 0.26, 1.05). However, VATS had shorter median LOS compared to OT (4 vs. 6 days, respectively), p = 0.002. A comparison of VATS versus OT showed no significant difference in the risk of recurrence, HR = 1.21 (95%CI = 0.74, 2.00), or death, HR = 1.34 (95%CI = 0.88, 2.06), in the intent-to-treat population. Similarly, no significant differences in recurrence or mortality risk were observed between VATS versus OT for analyses conducted separately for each cancer stage group or those limited to patients with negative margins. Conclusion: Our study indicates that compared to OT, VATS leads to shorter LOS while achieving comparable margins status, recurrence-free and overall survival regardless of tumor stage at diagnosis.

Preprint ARTICLE | doi:10.20944/preprints202103.0157.v1

Light Extraction Enhancement Techniques for Inorganic Scintillators

Francesco Gramuglia, Simone Frasca, Emanuele Ripiccini, Esteban Venialgo, Valentin Gâté, Hind Kadiri, Nicolas Descharmes, Daniel Turover, Edoardo Charbon, Claudio Bruschini

Subject: Engineering, Automotive Engineering Keywords: Coating; Light extraction; Nanostructure; Optical interface; Packing fraction; PET; Photonic crystals; Radioactive source; Scintillators; Thin films

Online: 4 March 2021 (12:28:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints201808.0001.v1

A Correlation Analysis of Normalized Indicators of Citation

Dmitry M. Kochetkov

Subject: Social Sciences, Library And Information Sciences Keywords: normalized indicators; correlation analysis; Source Normalized Impact per Paper; SNIP; Field-Weighted Citation Impact; FWCI

Online: 1 August 2018 (05:57:55 CEST)

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Working Paper ARTICLE

CuFusion2: Accurate and Denoised Volumetric 3D Object Reconstruction Using Depth Cameras

Chen ZHANG

Subject: Computer Science And Mathematics, Computer Science Keywords: 3D object reconstruction, depth cameras, Kinect sensors; open source, signal denoising, SLAM

Online: 9 April 2019 (12:24:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0562.v1

Dry Heat Cooking of Meats as a Source of Airborne N-Nitrosodimethylamine (NDMA)

Hekap Kim, Jiyeon Tcha, Man-yong Shim, Sungjin Jung

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: charcoal; dry heat cooking; indoor; meat; N-nitrosodimethylamine; health risk; source

Online: 23 November 2018 (13:59:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0352.v1

Entomological Remote Dark Field Signal Extraction by Maximum Noise Fraction and Unsupervised Clustering for Species Identification

Kouakou Benoit, Eliane Koko Assoi, Adolphe Yatana Gbogbo, Jeremie Zoueu

Subject: Physical Sciences, Acoustics Keywords: remote sensing; spectroscopy; blind source separation; unsupervised clustering; insects

Online: 12 March 2021 (20:16:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints202204.0107.v1

On the Redox-Activity and Health-Effects of Atmospheric Primary and Secondary Aerosol: Phenomenology

Francesca Costabile, Stefano Decesari, Roberta Vecchi, Franco Lucarelli, Gabriele Curci, Dario Massabò, Matteo Rinaldi, Maurizio Gualtieri, Emanuela Corsini, Elena Menegola, Silvia Canepari, Lorenzo Massimi, Stefania Argentini, Maurizio Busetto, Gianluca Di Iulio, Luca Di Liberto, Marco Paglione, Igor Petenko, Mara Russo, Angela Marinoni, Gianpietro Casasanta, Sara Valentini, Vera Bernardoni, Federica Crova, Gianluigi Valli, Alice Corina Forello, Fabio Giardi, Silvia Nava, Giulia Pazzi, Paolo Prati, Virginia Vernocchi, Teresa La Torretta, Ettore Petralia, Milena Stracquadanio, Gabriele Zanini, Gloria Melzi, Emma Nozza, Martina Iulini, Donatella Caruso, Lucia Cioffi, Gabriele Imperato, Flavio Giavarini, Maria Battistoni, Francesca Di Renzo, Maria Agostina Frezzini, Cinzia Perrino, Maria Cristina Facchini

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: atmospheric aerosol; chemical composition; secondary aerosol; source apportionment; ultrafine particles; oxidative potential; exposure; toxicology; forecasting; micrometeorology

Online: 12 April 2022 (09:54:57 CEST)

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