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Preprint ARTICLE | doi:10.20944/preprints202004.0067.v1

A Comparative Study of Different Wind Speed Distribution Models for Accurate Evaluation of Onshore Wind Energy Potential: A Case Study on the Southern Coasts of Iran

Siyavash Filom, Soheil Radfar, Roozbeh Panahi

Subject: Engineering, Energy And Fuel Technology Keywords: wind power; wind energy; coastal regions; statistical distributions; wind turbine capacity factor

Online: 6 April 2020 (15:29:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0028.v2

The Outdoor Field Test and Energy Yield Model of the Four-terminal on Si Tandem PV Module

Kenji Araki, Hiroki Tawa, Hiromu Saiki, Yasuyuki Ota, Kensuke Nishioka, Masafumi Yamaguchi

Subject: Engineering, Energy And Fuel Technology Keywords: photovoltaic; solar spectrum; tandem cell; energy yield model; on-Si tandem; terminal

Online: 30 March 2020 (08:23:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0330.v1

A Mixed-Binary Linear Programming Model for Optimal Energy Management of Smart Buildings

Zahra Foroozandeh, Sergio Ramos, Joao Soares, Fernando Lezama, Zita Vale, Antonio Gomes, Rodrigo L. Joench

Subject: Engineering, Electrical And Electronic Engineering Keywords: distributed generation; energy resource management; optimization; mixed-binary linear programming; smart buildings

Online: 23 February 2020 (15:30:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints201909.0080.v1

Performance Evaluation of Monocrystalline PV Module in Hot Arid Climate for Developing Smart Cities

Asif Khan, Saim Memon

Subject: Engineering, Electrical And Electronic Engineering Keywords: photo-voltaic; monocrystalline; energy efficiency; hot-arid climate; smart cities; MATLAB simulations

Online: 7 September 2019 (00:40:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201908.0122.v1

Initial Field Testing Results from Building-Integrated Solar Energy Harvesting Windows Installation in Perth, Australia

Mikhail Vasiliev, Mohammad Nur-E-Alam, Kamal Alameh

Subject: Physical Sciences, Applied Physics Keywords: renewables; energy saving and generation; built environments; solar windows; advanced glazings; photovoltaics

Online: 11 August 2019 (02:40:57 CEST)

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Preprint REVIEW | doi:10.3390/sci1020043

New Energy Technologies: Microalgae, Photolysis and Airborne Wind Turbines

Patrick Moriarty, Damon Honnery

Subject: Engineering, Energy And Fuel Technology Keywords: airborne wind turbines; climate change; EROI; microalgae; photolysis; renewable energy; technology introduction

Online: 7 August 2019 (00:00:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201908.0078.v1

A Modified Free Wake Vortex Ring Method for Horizontal-Axis Wind Turbines

Jing Dong, Axelle Viré, Carlos Simao Ferreira, Zhangrui Li, Gerard van Bussel

Subject: Computer Science And Mathematics, Mathematics Keywords: free wake vortex method, horizontal-axis wind turbine, floating wind energy, aerodynamics

Online: 6 August 2019 (12:48:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0244.v1

Crystal Transition Behavior and Thermal Properties of Thermal-Energy-Storage Copolymer Materials with N-Behenyl Side-Chain

Yuchen Mao, Jin Gong, Meifang Zhu, Hiroshi Ito

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: crystal transition; thermal energy storage; copolymer microcapsule; suspension polymerization; light-induced polymerization

Online: 22 July 2019 (10:57:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0136.v1

CO2 Concentration and Occupancy Detection of Educational Buildings for Energy Efficiency Purposes: An Experimental Analysis

Alessandro Franco, Francesco Leccese

Subject: Engineering, Control And Systems Engineering Keywords: carbon dioxide, energy efficiency, occupancy detection, indoor air quality, measurement, data analysis.

Online: 9 July 2019 (14:37:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0250.v1

How Net Radiation on Forested Snowpack Changes across a Latitudinal Gradient

Bijan Seyednasrollah, Mukesh Kumar

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: energy balance; snowmelt; snow hydrology; snow-vegetation interaction; shortwave radiation; longwave radiation

Online: 25 June 2019 (08:59:58 CEST)

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Working Paper ARTICLE

Energy Analysis in Ice Hockey Arenas and Analytical Formula for the Temperature Profile in the Ice Pad with Transient Boundary Conditions

Andrea Ferrantelli, Klaus Viljanen, Jarek Kurnitski

Subject: Engineering, Civil Engineering Keywords: transient heat conduction; cooling; theoretical models; analytical solutions; ice rinks; energy efficiency

Online: 7 May 2019 (10:23:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0202.v1

Research on Four-Phase Interleaved Step-Up DC/DC Converter for Photovoltaic Energy Storage System

Xiaogang Wu, Boyang Yu, Jiuyu Du, Wenwen Shi

Subject: Engineering, Electrical And Electronic Engineering Keywords: DC-DC converter; photovoltaic energy storage system; high voltage gain; high efficiency

Online: 17 April 2019 (11:40:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0400.v2

A Comparative Study on the RFS Program of Korea with the US and UK

Jung-Yull Shin, Gun-Woo Kim, Janet S. Zepernick, Kyu-Young Kang

Subject: Engineering, Energy And Fuel Technology Keywords: RFS (Renewable Fuel Standards); renewable energy; biodiesel; CO2; GHG; sustainability; carbon neutral

Online: 18 December 2018 (05:03:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0432.v1

Demand Response Readiness in Retail Stores: DR Control Preferences, Stakeholder Engagement, and Cross-National Differences

Zheng Ma, Kati Kuusinen, Mikkel Baun Kjærgaard, Bo Nørregaard Jørgensen

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: energy flexibility; retail stores; influential factors; employee engagement; customer engagement; utility collaboration

Online: 19 November 2018 (08:37:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0031.v1

Experimental Assessment of a Centralised Controller for High-RES Active Distribution Networks

Francisco de Paula García-López, Manuel Barragán-Villarejo, Alejandro Marano-Marcolini, José María Maza-Ortega, José Luis Martínez-Ramos

Subject: Engineering, Electrical And Electronic Engineering Keywords: active distribution network; laboratory testbed; renewable energy sources; DC link; centralised control

Online: 2 November 2018 (07:08:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0627.v1

Effect of Time on a Hierarchical Corn Skeleton-Like Composite of CoO@ZnO as Capability Electrode Material for High Specific Performance Supercapacitors

Anil Kumar Yedluri, Hee-Je Kim

Subject: Engineering, Energy And Fuel Technology Keywords: nanorod structure; nanocorn structure; Hierarchical nanocorn skeleton-like structure; energy storage devices

Online: 26 October 2018 (11:07:54 CEST)

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Preprint REVIEW | doi:10.20944/preprints201810.0501.v1

The Effectiveness of a Three-Temperature Heat Pump System

Tomáš Stejskal, Jozef Svetlík, Peter Demeč, Miroslav Dovica, Miroslav Štofa, Juraj Kováč

Subject: Engineering, Energy And Fuel Technology Keywords: Energy Efficiency Ratio; Economic Impact, heat engine; heat pump; Coefficient of Performance

Online: 22 October 2018 (14:03:54 CEST)

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Preprint ARTICLE | doi:10.3390/sci1010002

Correlation between the Fluctuations in Worldwide Seismicity and Atmospheric Carbon Pollution

Alberto Carpinteri, Gianni Niccolini

Subject: Environmental And Earth Sciences, Geochemistry And Petrology Keywords: atmospheric evolution; seismicity; low-energy nuclear reactions; carbon pollution; time series analysis

Online: 28 September 2018 (00:00:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0082.v1

Computing the Real Impact of Wind Turbine Power Curve Upgrades: A SCADA-Based Multivariate Linear Method and a Vortex Generator Test Case

Davide Astolfi, Francesco Castellani, Mario Luca Fravolini, Silvia Cascianelli, Ludovico Terzi

Subject: Engineering, Energy And Fuel Technology Keywords: wind energy; wind turbines; supervisory control and data acquisition; retrofitting; performance evaluation

Online: 6 June 2018 (10:17:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0068.v1

Physical and Numerical Analysis of Bioclimatic Strategies Implemented on Social Housing

Cesar Augusto Real-Ramirez, Jose Maria Velazquez-Soto, Rosalba Orduña-Martinez, Jesus Isidro Gonzalez-Trejo

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: bioclimatic design; climatic conditions; wind tunnel; numerical methods; social housing; energy efficiency

Online: 3 May 2018 (11:26:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0383.v1

High Piezoelectric Conversion Properties of Axial InGaN/GaN Nanowires

Nikoletta Jegenyes, Martina Morassi, Pascal Chrétien, Laurent Travers, Lu Lu, Francois Julien, Maria Tchernycheva, Frederic Houzé, Noelle Gogneau

Subject: Chemistry And Materials Science, Nanotechnology Keywords: III-N Nanowires; Piezoelectric generation; Atomic force microscope; Piezo-generators; Energy harvesting

Online: 30 April 2018 (18:31:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0141.v1

Genome-Guided Analysis of the Syntrophic Acetate Oxidizer C. ultunense and Comparative Genomics Reveal Different Strategies for Acetate Oxidation and Energy Conservation in Syntrophic Acetate-Oxidising Bacteria

Shahid Manzoor, Anna Schnürer, Erik Bongcam-Rudloff, Bettina Müller

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: syntrophic acetate oxidation; energy conservation; methane production; hydrogen production; anaerobic digestion process

Online: 19 March 2018 (07:23:17 CET)

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Syntrophic acetate oxidation operates close to the thermodynamic equilibrium and very little is known about the participating organisms and their metabolism. Clostridium ultunense is one of the most abundant syntrophic acetate-oxidising bacteria (SAOB) found in engineered biogas processes operating with high ammonia concentrations. It has been proven to oxidise acetate in cooperation with hydrogenotrophic methanogens. There is evidence that the Wood-Ljungdahl (WL) pathway plays an important role in acetate oxidation. In this study we analysed the physiological and metabolic capacities of C. ultunense on genome scale and conducted a comparative study of all known characterised SAOB, namely Syntrophaceticus schinkii, Thermacetogenium phaeum, Tepidanaerobacter acetatoxydans and Pseudothermotoga lettingae. The results clearly indicated physiological robustness beneficial for anaerobic digestion environments and revealed unexpected metabolic diversity with respect to acetate oxidation and energy conservation systems., Unlike S. schinkii and Th. phaeum, C. ultunense clearly does not employ the oxidative WL pathway for acetate oxidation, as its genome (and that of P. lettingae) lack important key genes. In both those species, a proton motive force is likely formed by chemical protons involving putative electron-bifurcating [Fe-Fe] hydrogenases rather than proton pumps. No genes encoding a respiratory Ech hydrogenase, as involved in energy conservation in Th. phaeum and S. schinkii, were identified in C. ultunense and P. lettingae. Moreover, two respiratory complexes sharing similarities to the proton-translocating ferredoxin:NAD⁺ oxidoreductase (Rnf) and the Na+ pumping NADH:quinone hydrogenase (NQR) were predicted. These might form a respiratory chain involved in reduction of electron acceptors other than protons. However, involvement of these complexes in acetate oxidation in C. ultunense and P. lettingae needs further study. This genome-based comparison provides a solid platform for future meta-proteomics and meta-transcriptomics studies and for metabolic engineering, control and monitoring of SAOB.

Preprint ARTICLE | doi:10.20944/preprints201802.0109.v2

A New Framework to Evaluate Urban Design Using Urban Microclimatic Modelling in Future Climatic Conditions

Dasaraden Mauree, Silvia Coccolo, Amarasinghage Tharindu Perera, Vahid Nik, Jean-Louis Scartezzini, Emanuele Naboni

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Climate change; energy system sizing; sustainable urban planning; urban climate; urban design.

Online: 22 February 2018 (13:34:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints201712.0046.v1

Thermal and Electrical Characterization of a Semi-Transparent Dye Sensitized Photovoltaic Module under Real Operating Conditions

Cristina Cornaro, Ludovica Renzi, Marco Pierro, Aldo Di Carlo, Alessandro Guglielmotti

Subject: Engineering, Energy And Fuel Technology Keywords: DSC; DSM; BIPV; buildings; photovoltaic; thermal properties; electric properties; glazing; energy efficiency

Online: 7 December 2017 (15:12:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints201710.0064.v1

People-Centred Approach for ICT Tools Supporting Energy Efficient and Healthy Behaviour in Buildings

Ana Tisov, Dan Podjed, Simona D’Oca, Jure Vetršek, Eric Willems, Peter Op’t Veld

Subject: Social Sciences, Psychology Keywords: Energy use; indoor environment; health; behaviour change; awareness campaign; people-centred approach

Online: 10 October 2017 (17:41:16 CEST)

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This paper attempts to alter a prevailing assumption that buildings use energy to an understanding that in fact, people use energy. Therefore, to successfully accelerate the transition to a low-carbon society and economy more emphasis should be on motivating people and increasing their awareness by making them energy conscious building users and therefore active players in the energy transition process. In this context, this paper provides insights from the Horizon 2020 MOBISTYLE project. It demonstrates research and development approaches, highlights the main project objectives, and presents findings of an ethnographic (qualitative) study of users’ habits, practices, and needs. The aim of the project is to motivate behavioural change by raising consumer awareness through the provision of attractive personalized information on user’s energy use, indoor environment and health, all enabled by an integrated information and communication technology (ICT) service. In this context, the anthropological people-centred approach is integrated into the MOBISTYLE approach putting users at the centre of the ICT tools development process. The main quantitative objective of the project is a reduction of energy use for at least 16 % prompted by the provision of combined information and feedback systems on energy, indoor environmental quality (IEQ) and health. The most relevant motivational factors and key performance indicators (KPIs) for encouraging a more energy conscious and healthy lifestyle were defined by means of a people-centred approach, adopting anthropological inquiries in different settings. Information about users’ lifestyles and their needs was collected in focus groups with potential users in five case studies, located in different European Union (EU) countries. Behaviour change is achieved through awareness campaigns, which encourage users to be pro-active about their energy consumption and to simultaneously improve health and well-being.

Preprint ARTICLE | doi:10.20944/preprints201707.0011.v1

RGCA: a Reliable GPU Cluster Architecture for Large-Scale Internet of Things Computing Based on Effective Performance-Energy Optimization

Yuling Fang, Qingkui Chen, Neal N. Xiong, Deyu Zhao, Jingjuan Wang

Subject: Computer Science And Mathematics, Computer Science Keywords: Internet of Things; data mining algorithms; GPU cluster; performance; energy consumption; reliability

Online: 6 July 2017 (12:40:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201610.0010.v1

Initial Energy Density of √ s = 7 and 8 TeV p+p Collisions at the LHC

Mate Csanad, Tamas Csorgo, Ze-Fang Jiang, Chun-Bin Yang

Subject: Physical Sciences, Nuclear And High Energy Physics Keywords: quark-gluon plasma, hydrodynamics, pseudorapidity distribution, initial state, energy density, Bjorken estimate

Online: 5 October 2016 (09:04:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201608.0071.v1

Estimation of Distribution Algorithm for Energy-Efficient Scheduling in Turning Processes

Fang Wang, Yunqing Rao, Chaoyong Zhang, Qiuhua Tang, Liping Zhang

Subject: Engineering, Mechanical Engineering Keywords: energy-efficiency scheduling; flexible flow shop; estimation of distribution algorithm; turning processing

Online: 8 August 2016 (08:49:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0679.v1

Developing Prediction Models for Solar Photovoltaic Energy Generation Using GBM

Yoo-Jung Kim, Na-Hyeong Kim, So-Yeon Park, Jin-Young Kim, Chang-Ki Kim, Myeong-Chan Oh, Hyun-Goo Kim, Yung-Seop Lee

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: renewable energy; solar photovoltaic energy generation; prediction; gradient boosting machine (GBM); gradient boosting regressor (GBR), time series analysis; autoregressive integrated moving average (ARIMA); normalized mean absolute error (nMAE)

Online: 9 June 2023 (07:20:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1510.v1

ON A NEW INNOVATIVE STEAM-BASED METHOD FOR TEACHING CYCLOIDAL CURVES IN ENGINEERING HIGHER EDUCATION

Szilvia Szilágyi, Attila Körei, Ingrida Vaičiulytė

Subject: Computer Science And Mathematics, Other Keywords: engineering mathematics; cycloidal curves; dynamic geometry software; central trochoids; project-based learning; LEGO 4C learning model; educational robotics

Online: 20 September 2024 (10:48:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1239.v1

Stakeholders' Perceptions Regarding the Impact of the Working Environment on the Occupational Safety, Health, and Well-Being of Street-Based Sex Workers in Brussels

Sophie Gateault, Carita Håkansson, Anna Oudin

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: street-based sex workers; sex workers; sex work; occupational health; occupational safety and health; Belgium; Brussels; decriminalization law

Online: 16 September 2024 (14:12:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0680.v1

Evaluating E6 Oncoprotein and Anti-E6 Antibodies as Saliva-Based Biomarkers for HPV-Associated Oral Cancer: Insights from SPR Immunoassays

Chi-Sheng Cheng, Feng-Di Lung

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: Oral Cavity Cancer; Human Papillomavirus (HPV); E6 Oncoprotein; Anti-E6 Antibody; Saliva-based Biomarker; Surface Plasmon Resonance (SPR)

Online: 9 September 2024 (12:06:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1488.v1

Long-Term Durability of Infliximab Maintenance Therapy Incorporating Plant-Based Diet in Inflammatory Bowel Disease

Mitsuro Chiba, Tsuyotoshi Tsuji, Kunio Nakane, Satoko Tsuda, Hisanori Matsuzawa, Kae Sugawara, Yuki Izumiya, Kazuya Kimura, Masafumi Komatsu, Haruhiko Tozawa

Subject: Medicine And Pharmacology, Gastroenterology And Hepatology Keywords: inflammatory bowel disease; infliximab; durability; diet; plant-based diet; maintenance therapy; environmental factor; diet; lacto-ovo-vegetarian diet

Online: 21 August 2024 (08:09:21 CEST)

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Preprint REVIEW | doi:10.20944/preprints202408.1330.v1

A Mixed Review of Research on Competencies of Built Environment Professionals in Infrastructure Delivery within Emerging Economies

Ramabodu Stephan Molusiwa

Subject: Engineering, Architecture, Building And Construction Keywords: built environment competencies; infrastructure delivery; emerging economies; bibliometric analysis; systematic literature review; competency‐based curriculum; construction management skills

Online: 19 August 2024 (14:20:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2396.v1

Exploring the Adoption of Cloud-Based Supply Chain Management Solutions

George Wilson, William Brown, Oliver Johnson

Subject: Business, Economics And Management, Business And Management Keywords: Cloud-Based SCM; Supply Chain Management; Cost Efficiency; Real-Time Data Access; Data Security; Integration Challenges; Change Management

Online: 31 July 2024 (07:37:12 CEST)

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The adoption of cloud-based supply chain management (SCM) solutions represents a transformative shift in how organizations manage their supply chains, offering significant advantages in terms of cost efficiency, flexibility, real-time data access, and the integration of advanced technologies. This study explores the multifaceted impacts of cloud-based SCM systems, focusing on both their benefits and the challenges encountered during their implementation. Through an in-depth analysis of interview and case study data, the research reveals that cloud-based solutions enable organizations to reduce capital and operational expenditures substantially while providing the scalability necessary to adapt to fluctuating demands. Real-time access to data enhances visibility and decision-making, and the incorporation of advanced technologies such as artificial intelligence and machine learning improves predictive analytics and process optimization. However, the study also identifies several critical challenges associated with the adoption of cloud-based SCM solutions. Key issues include data security concerns, integration difficulties with legacy systems, and the complexities of managing organizational change. Effective implementation requires meticulous planning, comprehensive training, and strategic vendor management to address these challenges successfully. The research highlights the importance of robust security measures, thorough integration strategies, and effective change management practices in overcoming these obstacles. The strategic outcomes of adopting cloud-based SCM solutions include improved operational efficiency, enhanced inventory management, and increased customer satisfaction. Additionally, organizations gain a competitive edge through better supplier coordination and greater responsiveness to market changes. Overall, the study demonstrates that while cloud-based SCM solutions offer substantial benefits, their successful adoption hinges on effectively managing associated challenges and leveraging their transformative potential.

Preprint ARTICLE | doi:10.20944/preprints202407.0512.v1

Evidence On Viral Suppression Supports Scaling-Up Transition To Dolutegravir-Based Regimens In Pediatric Populations In Cameroon: A Multicentre Baseline Assessment For The Cipher-Adola Study

Joseph FOKAM, Yagai Bouba, Rogers Awoh Ajeh, Dominik Tameza Guebiapsi, Suzane Essamba, Albert Franck Zeh Meka, Ebiama Lifanda, Rose Armelle Ada, Yakouba Liman, Nancy Barbara Mbengono, Audrey Raissa Dzaddi Djomo, Suzie Ndiang Tetang, Samuel Martin Sosso, Jocelyne Carmen Babodo, Olivia Francette Ndomo Ambomo, Edith Michele Temgoua, Caroline Medouane, Sabine Ndejo Atsinkou, Justin Leonel Mvogo, Roger Martin Onana, Jean de Dieu Anoubissi, Alice Ketchaji, Alex Durand Nka, Davy-Hyacinthe Anguechia Gouissi, Aude Christelle Ka’e, Nadine Nguendjoung Fainguem, Rachel Simo Kamgaing, Désiré Augustin Komego Takou, Michel Carlos Tommo Tchouaket, Ezechiel Ngoufack Jagni Semengue, Marie Atsama Amougou, Julius Nwobegahay, Comfort Vuchas, Anna Nya Nsimen, Bertrand Bille Eyoum, Sandra kenmegne Gatchuessi, Francis Ndongo Ateba, Daniel Kesseng, Serge Clotaire Billong, Daniele Armenia, Maria Mercedes Santoro, Francesca Ceccherini-Silberstein, Paul Ndombo Koki, Hadja Cherif Hamsatou, Vittorio Colizzi, Alexis Ndjolo, Carlo Federico Perno, Anne-Cécile Zoung-Kanyi Bissek

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: Virological suppression; low level viremia; children, adolescents, and young-adults; DTG-based regimen; elimination of paediatric AIDS; Cameroon.

Online: 5 July 2024 (12:31:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1383.v1

K-means++ for Critical Component Identification: Power Grid Case Study Using Measurement-Based Analysis

Reza SaeedKandezy, John Jiang

Subject: Engineering, Electrical And Electronic Engineering Keywords: Complex systems, Critical components, Dynamic identification, K-means++, Measurement-based, Network equivalence, Power systems, System analysis, System dynamics.

Online: 20 June 2024 (14:45:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0792.v2

Planting Seeds of Change in Foodstyles: Growing Brand Strategies to Foster Plant-Based Alternatives Through Online Platforms

Gino Gabriel Bonetti, Chelsea van Hooven, Maria Giovanna Onorati

Subject: Social Sciences, Media Studies Keywords: plant-based food industry; innovative market entry strategies; growth strategies; brand “ platformization” ; multidimensional approach; caring lifestyles; alternative diets

Online: 27 September 2024 (10:27:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0498.v1

Assessment of the Biodegradability and Compatibility of Finished Leathers: Analysis Using Spectroscopy and Thermal Methods

Alberto Vico López, Marcelo Bertazzo, Maria I. Maestre-Lopez, Francisca Arán-Ais, Elena Orgilés-Calpena, Frutos C. Marhuenda-Egea

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: biodegradation; composting; leather finishing; bio-based materials; Fourier transform infrared spectroscopy; thermogravimetric analysis; solid-state nuclear magnetic resonance

Online: 7 June 2024 (14:34:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0413.v1

The Impact of Southbound Expansion on Clustered OpenFlow Software Defined Network Controller Synchronisation

E. D. Sarada Indumini Hettiarachchi, Nurul I. Sarkar, Jairo Gutierrez

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: Software Defined Networking; Southbound Interface; Controller Clustering; East-West
Communication; Leader-Based Models; ODL clustering; ONOS clustering

Online: 7 June 2024 (04:49:27 CEST)

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The clustering methods of Software Defined Networking (SDN) gained popularity due to their ability to offer improved scalability, consistency, dependability, and load balancing within overlay networks and SDN partitions. This paper delved into the effects of increasing the number of OpenFlow-enabled southbound devices on the establishment and coordination of SDN-Controller clusters. Specifically, we examined the volume of east-west cluster packet communication concerning the number of southbound devices within the topology. Many research studies focused on bandwidth and the number of bytes in East-West communication. While bandwidth referred to the maximum rate at which data could be transferred, and the number of bytes reflected the volume of data being transmitted, the number of packet communications directly influenced the efficiency and responsiveness of network operations. Our investigation encompassed the impact of SDN controllerto- controller communication within the cluster concerning the rising number of OpenFlow switches connected to various topologies, including tree (star-bus network), linear, and torus configurations. This study presented data on communication patterns within Open Network Operating Systems (ONOS) and OpenDaylight (ODL) clusters, revealing differing levels of controller communication with southbound network expansions. We evaluated the scalability of ODL and ONOS controllers by scrutinising the effect of increasing the number of southbound devices on control communication volume. Our analysis revealed varied communication patterns within ONOS and ODL clusters, resulting in different volumes of control communication with southbound expansions. The findings indicated that in small to medium-sized SDNs, ODL outperformed ONOS, notably with faster cluster discovery. Conversely, ONOS demonstrated greater efficiency in larger networks owing to its centralised communication architecture. Finally, we provided recommendations for selecting the most suitable controllers based on the size of southbound networks, aiming to provide practical guidelines for optimal network performance.

Preprint ARTICLE | doi:10.20944/preprints202404.1693.v1

Promotion Effect of H2S with High Concentrations on Catalytic Dry Reforming of Methane in Sour Natural Gas

Hengchang Ni, Xiaoyu Jia, Li Yu, Yuyang Li, Ping Li

Subject: Engineering, Energy And Fuel Technology Keywords: Sour natural gas; Dry reforming of methane; High H2S concentration; Promotion effect; MgO-based catalyst; S-adsorbed species

Online: 25 April 2024 (16:03:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0964.v1

Evaluation of Problem-Based Learning Experiences Addressed to Health Promotion in the Fourth Grade of Primary School

Beatriz Mederer-Hengstl, Pilar Núñez-Delgado, Aurora Bueno-Cavanillas

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: Health Education; Healthy Habits; Healthy Diet; Active Learning Strategies; Problem-Based Learning; Instrumental Skills; Attitudinal Competences; Primary School.

Online: 15 April 2024 (11:33:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.0734.v1

Comparative Effectiveness of Supervised and Home-based Rehabilitation after Anterior Cruciate Ligament Reconstruction in Competitive Athletes

Rehan Iftikhar Bukhari Syed, Laszlo Rudolf Hangody, Gergely Frischmann, Petra Kós, Bence Kopper, Berkes István

Subject: Public Health And Healthcare, Physical Therapy, Sports Therapy And Rehabilitation Keywords: anterior cruciate ligament; anterior cruciate ligament reconstruction; supervised rehabilitation; Home-based rehabilitation; return to sport; prevention; re-injury

Online: 13 March 2024 (11:36:56 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.2212.v1

Why Do Tree Ensemble Approximators Not Outperform the Recursive-Rule eXtraction Algorithm?

Soma Onishi, Masahiro Nishimura, Ryota Fujimura, Yoichi Hayashi

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Interpretable machine learning; Explainable artificial intelligence; Rule extraction; Rule-based models; Decision lists; Decision trees; Tree ensemble approximators

Online: 1 February 2024 (04:26:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0707.v1

Artificial Intelligence Sensing: Effective Flavor Blueprinting of Tea Infusions for a Quality Control Perspective

Andrea Caratti, Angelica Fina, Fulvia Trapani, Carlo Bicchi, Erica Liberto, Chiara Cordero, Federico Magagna

Subject: Chemistry And Materials Science, Food Chemistry Keywords: flavor blueprint; black tea infusions; sensomics-based-expert-system; industrial quality control; Artificial Intelligence sensing; accurate flavor screening

Online: 9 January 2024 (09:20:56 CET)

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Preprint REVIEW | doi:10.20944/preprints202311.1772.v1

Identification of Putative Causal Relationships Between Blood-Based Biomarkers and Prediabetes-Induced Senescence: A Comprehensive Review

Nonkululeko Avril Mbatha, Aganze Gloire-Aime Mushebenge, Andile Khathi

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: prediabetes; senescence; blood-based biomarkers; aging; age-related diseases; inflammation; oxidative stress; vascular dynamics; metabolic disorders; chronic inflammation

Online: 29 November 2023 (04:48:13 CET)

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Preprint REVIEW | doi:10.20944/preprints202311.0532.v1

A Survey on IoT-Edge-Cloud Continuum Systems: Status, Challenges, Use Cases, and Open Issues

Panagiotis Gkonis, Anastasios Giannopoulos, Panagiotis Trakadas, Xavi Masip-Bruin, Francesco D' Andria

Subject: Engineering, Telecommunications Keywords: IoT; cloud-based operating systems; edge computing; machine learning; federated learning; task offloading; security and privacy; blockchain technology

Online: 8 November 2023 (09:49:07 CET)

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The rapid growth in the number of interconnected devices on the Internet (referred to as the Internet of Things – IoT), along with the huge volume of data that are exchanged and processed, has created a new landscape in network design and operation. Due to the limited battery size and computational capabilities of IoT nodes, data processing usually takes place on external devices. Since latency minimization is a key concept in modern era networks, edge servers that are in close proximity to IoT nodes gather and process related data, while in some cases data offloading in the cloud might have to take place. The interconnection of a vast number of heterogeneous IoT devices with the edge servers and the cloud, where IoT, edge and cloud converge to form a computing continuum, is also known as IoT-edge-cloud (IEC) continuum. Several key challenges are associated with this new computing systems architectural approach, including: i) design of connection and programming protocols aimed at properly manipulating a huge number of heterogeneous devices over diverse infrastructures; ii) design of efficient task offloading algorithms aimed at optimizing services execution; iii) support for security and privacy enhancements during data transfer to deal with the existent and even unforeseen attacks and threats landscape; iv) scalability, flexibility and reliability guarantees to face the expected mobility for IoT systems, and; v) design of optimal resource allocation mechanisms to make the most out of the available resources. These challenges become even more significant towards the new era of sixth generation (6G) networks, which will be based on the integration of various cutting edge heterogeneous technologies. Therefore, the goal of this survey paper is to present all recent developments in the field of IEC continuum systems, with respect to the aforementioned deployment challenges. In the same context, potential limitations and future challenges are highlighted as well. Finally, indicative use cases are also presented, from an IEC continuum perspective.

Preprint ARTICLE | doi:10.20944/preprints202310.1181.v1

SARS-CoV-2 Spike Protein-Expressing Enterococcus for Oral Vaccination: Immunogenicity and Protection

Alexander Suvorov, Svetlana Loginova, Galina Leontieva, Tatiana Gupalova, Yulia Desheva, Dmitry Korzhevskii, Tatiana Kramkaya, Elena Bormotova, Irina Koroleva, Olga Kopteva, Olga Kirik, Veronika Shchukina, Sergey Savenko, Dmitry Kutaev, Sergey Borisevitch

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: recombinant probiotic -based vaccines; probiotic strain E. faecium L3; mucosal vaccines; SARS-CoV-2 spike protein; vaccine efficacy.

Online: 18 October 2023 (11:29:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0166.v1

Polarimetric SAR Image Classification Based on Double-Channel Convolution Network and Edge-preserving Markov Random Field

Junfei Shi, Mengmeng Nie, Shanshan Ji, Cheng Shi, Hongying Liu, Haiyan Jin

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: PolSAR image classification; Wishart-based complex matrix network; multi-feature network; Double-channel convolution network; Edge-preserving MRF

Online: 3 October 2023 (15:23:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1975.v1

Reinforcement Learning and Stochastic Optimization with Deep Learning based Forecasting on Power Grid Scheduling

Cheng Yang, Jihai Zhang, Wei Jiang, Li Wang, Hanwei Zhang, Zhongkai Yi, Fangquan Lin

Subject: Engineering, Electrical And Electronic Engineering Keywords: forecasting; reinforcement learning; power grid; planning and scheduling; uncertainty in AI; agent-based systems; deep learning; stochastic optimization

Online: 28 September 2023 (10:14:29 CEST)

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Preprint REVIEW | doi:10.20944/preprints202308.1476.v1

Imaging of the Reconstructed Breast

Theodora Kanavou, Dimitrios P. Mastorakos, Panagiotis D. Mastorakos, Eleni C. Faliakou, Alexandra Athanasiou

Subject: Medicine And Pharmacology, Other Keywords: breast; autologous reconstruction; implant-based breast reconstruction; MRI of reconstructed breast; complications of reconstruction surgery; breast cancer recurrence

Online: 21 August 2023 (12:35:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1719.v1

Production of Bio-based Polyol from Coconut Fatty Acid Distillate (CFAD) and Crude Glycerol for Rigid Polyurethane Foam Applications

Ma. Louella D. Salcedo, Christine Joy M. Omisol, Anthony O. Maputi, Dave Joseph E. Estrada, Blessy Joy M. Aguinid, Dan Michael A. Asequia, Daisy Jane D. Erjeno, Glenn Apostol, Henry Siy, Roberto M. Malaluan, Arnold C. Alguno, Gerard G. Dumancas, Arnold A. Lubguban

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: coconut fatty acid distillate; rigid polyurethane foam; bio-based polyols; high open-cell content foam; thermal insulating material

Online: 25 June 2023 (05:41:11 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.0509.v1

Sensitivity Enhancement for Separation-Based Analytical Techniques Utilizing Large Volume Injection and Analyte Derivatization for Trace Analysis in Bio-Fluids

Hanan Farouk, Hager Ebrahim, Heba Sonbol, Monika Malak, Maha Kamal, Noha Ibrahim, Ahmed Shawky, Walaa Zarad, Ahmed Emad, Samy Emara

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: separation-based analytical techniques; large volume injection; solid phase enrichment; solid phase analytical derivatization; packed reactor; trace analysis

Online: 8 May 2023 (10:17:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0185.v1

Allogenic Synovia Derived Mesenchymal Stem Cells for Treat-Ment of Equine Tendinopathies and Desmopathies – The Proof-of-Concept

Inês Leal Reis, Bruna Lopes, Patrícia Sousa, Ana Catarina Sousa, Mariana Branquinho, Ana R. Caseiro, Sílvia Santos Pedrosa, Alexandra Rêma, Cláudia Oliveira, Beatriz Porto, Luís Atayde, Irina Amorim, Rui Alvites, Jorge Miquel Silva Santos, Ana Colette Maurício

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: allogenic; cell-based therapies; clinical trials; ligament; mesenchymal stem cells; sport horses; syn-ovial mesenchymal stem cell; tendon

Online: 10 March 2023 (02:53:15 CET)

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Preprint REVIEW | doi:10.20944/preprints202302.0011.v1

Nutritional Assessment of the Symptomatic Patient on a Plant-Based Diet: Seven Key Questions

Gregory Adams Plotnikoff, Linda Dobberstein, Susan Raatz

Subject: Medicine And Pharmacology, Dietetics And Nutrition Keywords: Plant-based diet; Vegan; Vegetarian; vitamin B12; Iron; Essential fatty acids; Calcium; Zinc; vitamin D; essential amino acids

Online: 1 February 2023 (11:01:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202212.0282.v1

A Two-step FE Model Updating Approach for System and Damage Identification of Full-Scale Prestressed Bridge Girders

Niloofar Malekghaini, S. Farid Ghahari, Hamed Ebrahimian, Matthew Bowers, Eric Ahlberg, Ertugrul Taciroglu

Subject: Engineering, Civil Engineering Keywords: Modal-based model updating, Bayesian model updating, System identification, Damage identification, Operational health monitoring, I-girder, Bridge, Aging.

Online: 15 December 2022 (10:10:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202212.0054.v1

Sharding-Based Proof-of-Stake Blockchain Protocols: Key Components & Probabilistic Security Analysis

Abdelatif Hafid, Abdelhakim Senhaji Hafid, Dimitrios Makrakis

Subject: Computer Science And Mathematics, Security Systems Keywords: Security analysis; Blockchain; probabilistic analysis; sharding-based Blockchain protocols; malicious nodes; Proof-of-Stake; practical Byzantine fault tolerance.

Online: 5 December 2022 (01:00:40 CET)

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

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

Shinichi Ishiguri

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

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

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Preprint ARTICLE | doi:10.20944/preprints202205.0277.v1

Exploring Potential Causal Genes for Immunoglobulin A Nephropathy: A Summary Data-Based Mendelian Randomization and FUMA Analysis

Qian Zhang, Kang Zhang, Yining Zhu, Jingyun Yang, Minmin Zhang

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: immunoglobulin A nephropathy; expression quantitative trait loci; summary data-based Mendelian randomization; genome-wide association study; functional mapping

Online: 20 May 2022 (12:13:06 CEST)

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Preprint REVIEW | doi:10.20944/preprints202009.0520.v3

The Ecology of Plant Interactions: A Giant with Feet of Clay

Ciro Cabal, Fernando Valladares, Ricardo Martinez-Garcia

Subject: Biology And Life Sciences, Ecology, Evolution, Behavior And Systematics Keywords: plant-plant interactions; stress gradient hypothesis; functional trait ecology; inter-plant distance; individual-based models; consumer-resource models

Online: 17 February 2022 (19:37:10 CET)

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Preprint REVIEW | doi:10.20944/preprints202105.0219.v2

Data Integration in Logic-based Models of Biological Mechanisms

Benjamin Hall, Anna Niarakis

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Logic-based models; Boolean models; executable models; qualitative dynamical modelling; omic data integration; in silico simulations; formal verification

Online: 30 July 2021 (15:05:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0532.v3

Examining the Role of the Noradrenergic Locus Coeruleus for 2 Predicting Attention and Brain Maintenance in Healthy Old Age 3 and Disease: An MRI Structural Study for the Alzheimer’s Disease 4 Neuroimaging Initiative

Emanuele Raffaele Giuliano Plini, Erik O'Hanlon, Rory Boyle, Francesca Sibilia, Gaia Rikhye, Joanne Kenney, Robert Whelan, Michael Christopher Melnychuk, Ian Hamilton Robertson, Paul Michael Dockree

Subject: Social Sciences, Psychology Keywords: Locus Coeruleus; Reserve; Brain Age; Visual Attention; Alzheimer’s Disease; Mild Cognitive Impairment; normal Aging; Neuroimaging; Voxel Based Morphometry

Online: 21 June 2021 (11:41:40 CEST)

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Preprint REVIEW | doi:10.20944/preprints202104.0590.v1

Targeted Myocardial Restoration with Injectable Hydrogels - In Search of The Holy Grail in Regenerating Damaged Heart Tissue

Faizus Sazzad, Michał Kuzemczak, Engracia Loh, Wellington Wu, Theo Kofidis

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Hydrogel; Extracellular matrix hydrogels; Myocardial infarctions; Myocardial infarction therapy; Cardiac stem cell therapy; Tissue engineering; Cell-based therapy.

Online: 22 April 2021 (08:16:51 CEST)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202104.0560.v1

Microbiome-Inspired Green Infrastructure (MIGI): A Bioscience Roadmap for Urban Ecosystem Health

Jake Robinson, Harry Watkins, Ioana Man, Craig Liddicoat, Ross Cameron, Brenda Parker, Marcos Cruz, Laura Meagher

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: MIGI; microbiome-inspired green infrastructure; microbiome; urban microbiome; nature-based intervention; biodiversity; greenspace; green infrastructure; multispecies urbanism; EcoHealth

Online: 21 April 2021 (09:01:13 CEST)

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Working Paper ARTICLE

On Absorption Modeling and Food Effect Prediction of Rivaroxaban, a BCS II Drug Orally Administered as an Immediate-Release Tablet

Varun Kushwah, Sumit Arora, Miklós Tamás Katona, Dattatray Modhave, Eleonore Fröhlich, Amrit Paudel

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: In vitro–In vivo Correlation; Physiologically Based Pharmacokinetic Model; BCS Class II; Rivaroxaban; Xarelto; Food Effect; Population Kinetics

Online: 25 January 2021 (09:41:41 CET)

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Preprint ARTICLE | doi:10.20944/preprints202010.0153.v1

Study on the Compressive Behaviour of Sustainable Cement-Based Composites Under 1-Hour Direct Flame Exposure

Ajitanshu Vedrtnam, Chiara Bedon, Gonzalo Barluenga

Subject: Engineering, Automotive Engineering Keywords: Concrete; Cement-Based Composites (CBCs); compressive strength; fire exposure; thermal boundaries; Finite Element (FE) numerical modelling; empirical formulations.

Online: 7 October 2020 (09:27:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0377.v1

Adaptive Neuro-Fuzzy Inference System and a Multilayer Perceptron Model Trained with Grey Wolf Optimizer for Predicting Solar Diffuse Fraction

Randall Claywell, Nadai Laszlo, Felde Imre, Amir Mosavi

Subject: Computer Science And Mathematics, Information Systems Keywords: machine learning; prediction; adaptive neuro-fuzzy inference system; adaptive network-based fuzzy inference system; diffuse fraction; multilayer perceptron

Online: 17 September 2020 (05:46:25 CEST)

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Preprint REVIEW | doi:10.20944/preprints202007.0055.v1

Human Attribute Recognition: A Comprehensive Survey

Ehsan Yaghoubi, Farhad Khezeli, Diana Borza, SV Aruna Kumar, João Neves, Hugo Proença

Subject: Engineering, Control And Systems Engineering Keywords: Human Attribute Recognition; Imbalanced Learning; Pedestrian Recognition; Privacy Concerns; Clothing Attributes; Soft Biometrics; Appearance-Based Learning; Deep Learning

Online: 5 July 2020 (08:21:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201912.0279.v2

On the Directivity of Lamb Waves Generated by Wedge PZT Actuator in Thin CFRP Panel

Sergey Shevtsov, Valery Chebanenko, Maria Shevtsova, Shun-Hsyung Chang, Evgenia Kirillova, Evgeny Rozhkov

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: acoustic based SHM; orthotropic polymeric composites; Lamb waves; horizontally polarized SH waves; angle-beam wedge transducer; waves directivity

Online: 10 February 2020 (10:29:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints201912.0374.v1

Elucidating Binding Sites and Affinities of ERα Agonist and Antagonist to Human Alpha-Fetoprotein by in silico Modeling and Point Mutagenesis

Nurbubu T. Moldogazieva, Daria S. Ostroverkhova, Nikolai N. Kuzmich, Vladimir V. Kadochnikov, Alexander A. Terentiev, Yuri B. Porozov

Subject: Biology And Life Sciences, Biophysics Keywords: alpha-fetoprotein; estrogens; selective estrogen receptor modulators; homology-based modeling; molecular docking; protein-ligand interaction; amino acid substitutions

Online: 29 December 2019 (08:08:23 CET)

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Alpha-fetoprotein (AFP) is a major embryo- and tumor-associated protein capable of binding and transporting variety of hydrophobic ligands including estrogens. AFP has been shown to inhibit estrogen receptor (ER)-positive tumor growth and this can be attributed to its estrogen-binding ability. Despite AFP has long been investigated, its three-dimensional (3D) structure has not been experimentally resolved and molecular mechanisms underlying AFP-ligand interaction remain obscure. In our study we constructed homology-based 3D model of human AFP (HAFP) with the purpose to perform docking of ERα ligands, three agonists (17β-estradiol, estrone and diethylstilbestrol) and three antagonists (tamoxifen, afimoxifene and endoxifen) into the obtained structure. Based on ligand docked scoring function, we identified three putative estrogen- and antiestrogen-binding sites with different ligand binding affinities. Two high-affinity sites were located in (i) a tunnel formed within HAFP subdomains IB and IIA and (ii) opposite side of the molecule in a groove originating from cavity formed between domains I and III, while (iii) the third low-affinity site was found at the bottom of the cavity. 100 ns MD simulation allowed studying their geometries and showed that HAFP-estrogen interactions occur due to van der Waals forces, while both hydrophobic and electrostatic interactions were almost equally involved in HAFP-antiestrogen binding. MM/GBSA rescoring method estimated binding free energies (ΔG_bind) and showed that antiestrogens have higher affinities to HAFP as compared to estrogens. We performed in silico point substitutions of amino acid residues to confirm their roles in HAFP-ligand interactions and showed that Thr132, Leu138, His170, Phe172, Ser217, Gln221, His266, His316, Lys453, and Asp478 residues along two disulfide bonds, Cys224-Cys270 and Cys269-Cys277 have key roles in both HAFP-estrogen and HAFP-antiestrogen binding. Data obtained in our study contribute to understanding mechanisms underlying protein-ligand interactions and anti-cancer therapy strategies based on ER-binding ligands.

Preprint ARTICLE | doi:10.20944/preprints201905.0385.v1

Characterization of Photophysical Properties of D−π−A−π−D Type Diketopyrrolopyrrole Based Molecules for Organic Light-Emitting diodes and Organic Solar Cells

Ruifa Jin, Xiaofei Zhang, Wenmin Xiao

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: diketopyrrolopyrrole (DPP)-based molecules; photophysical properties; Charge transporting property; organic light-emitting diodes (OLEDs); organic solar cells (OSCs).

Online: 31 May 2019 (11:05:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0267.v1

Data–Driven Control Techniques for Renewable Energy Conversion Systems: Wind Turbine and Hydroelectric Plants

Silvio Simani, Stefano Alvisi, Mauro Venturini

Subject: Engineering, Control And Systems Engineering Keywords: wind turbine system; hydroelectric plant simulator; model--based control; data–driven approach; self–tuning control; robustness and reliability

Online: 26 January 2019 (10:08:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0326.v2

Cell-Based Fish: A Novel Approach to Seafood Production and an Opportunity for Cellular Agriculture

Natalie Rubio, Isha Datar, David Stachura, Kate Krueger

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: cellular agriculture; cell-based seafood; fish tissue culture; bioreactor; serum-free media; ocean conservation; marine cell culture; aquaculture

Online: 25 January 2019 (11:36:58 CET)

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Cellular agriculture is defined as the production of agricultural products from cell cultures rather than from whole plants or animals. With growing interest in cellular agriculture as a means to address the public health, environmental, and animal welfare challenges of animal agriculture, the concept of producing seafood from fish cell- and tissue-cultures is emerging as a means to address similar challenges with industrial aquaculture systems and marine capture. Cell-based seafood - as opposed to animal-based seafood - can combine developments in biomedical engineering with modern aquaculture techniques. Biomedical engineering developments such as closed-system bioreactor production of land animal cells create a basis for large scale production of marine animal cells. Aquaculture techniques such as genetic modification and closed system aquaculture have achieved marked gains in production that can pave the way for innovations in cell-based seafood production. Here, we present the current state of innovation relevant to the development of cell-based seafood across multiple species as well as specific opportunities and challenges that exist for advancing this science. The authors find that the physiological properties of fish cell- and tissue- culture may be uniquely suited to cultivation in vitro. These physiological properties, including hypoxia tolerance, high buffering capacity, and low-temperature growth conditions, make marine cell culture an attractive opportunity for scale production of cell-based seafood; perhaps even more so than mammalian and avian cell cultures for cell-based meats. This, coupled with the unique capabilities of crustacean tissue-friendly scaffolding such as chitosan, a common seafood waste product and mushroom derivative, presents great promise for cell-based seafood production via bioreactor cultivation. To become fully realized, cell-based seafood research will require more understanding of fish muscle culture and cultivation; more investigation into serum-free media formulations optimized for fish cell culture; and bioreactor designs tuned to the needs of fish cells for large scale production.

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

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

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

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

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

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

Preprint ARTICLE | doi:10.20944/preprints201810.0572.v1

Self--Tuning Control Techniques for Wind Turbine and Hydroelectric Plant Systems

Silvio Simani, Stefano Alvisi, Mauro Venturini

Subject: Engineering, Control And Systems Engineering Keywords: wind turbine system; hydroelectric plant simulator; model--based control; data--driven approach; self--tuning control; robustness and reliability

Online: 24 October 2018 (11:26:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0575.v1

Solutions to Benjamin-Bona-Mahony Equation in Two Space Dimensions by Various Methods

Alper Korkmaz

Subject: Computer Science And Mathematics, Mathematics Keywords: 2D RLW equation; 2D BBM equation; ansatz; series expansion method based on Sine-Gordon equation; traveling wave solution

Online: 30 July 2018 (10:00:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0017.v1

Filling the Gaps for Community-Based Programs Managing Treatment and Prevention of Child Malnutrition in Non-Emergency Contexts: Results from the Rainbow Project 2015-17 in Zambia

Stefania Moramarco, Giulia Amerio, Jean Kasengele Chipoma, Karin Nielsen-Saines, Leonardo Palombi, Ersilia Buonomo

Subject: Medicine And Pharmacology, Pediatrics, Perinatology And Child Health Keywords: childhood malnutrition; community-based management of acute malnutrition–CMAM; moderate acute malnutrition–MAM; supplementary feeding programs–SFP; Zambia

Online: 1 June 2018 (12:04:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.0206.v1

Efficiency Enhancement in Ocean Thermal Energy Conversion: A Comparative Study of Heat Exchanger Designs for Bi₂Te₃Based Thermoelectric Generators

Yi-Cheng Chung, Chun-I Wu

Subject: Engineering, Energy And Fuel Technology Keywords: thermoelectric material; Bi₂Te₃; ocean thermal energy conversion; thermoelectric 23
generator; heat exchanger; longitudinal vortex generators; renewable energy; sustainable development; sustainable technology

Online: 4 January 2024 (03:40:12 CET)

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The thermoelectric generator (TEG) has much potential as a renewable energy technology that could be used in ocean thermal energy conversion (OTEC). This technique employs TEGs and heat exchangers as substitutes for the intricate elements found in conventional OTEC systems, including pressure valves, evaporators, condensers, and turbine generators. By harnessing the temperature difference between warm surface seawater and cold deep seawater, it facilitates the conversion of this thermal gradient into electrical energy. This study used computer simulations to look at and compare three different types of heat exchangers: a cavity-type heat exchanger, a heat exchanger with flat fins, and a heat exchanger with longitudinal vortex generators (LVGs). The objective was to evaluate the influence of these designs on the thermoelectric conversion performance when implemented in OTEC systems. The study's findings indicate that using heat exchanger configurations featuring flat fins, or LVGs, enhances the efficiency of thermal energy transfer from warm seawater to TEGs, resulting in a notable enhancement in the output power of TEGs. Furthermore, the efficiency of TEG thermoelectric conversion is influenced by varying seawater flow rates in relation to the performance of flat fins and LVGs. In contrast to the cavity-type heat exchanger, the utilization of a heat exchanger equipped with flat fins has been found to yield a notable enhancement in the output power of TEGs by approximately 22.92%. Furthermore, this configuration demonstrates a substantial improvement in thermoelectric conversion efficiency, exhibiting an increase of around 40.01%. These improvements are observed under certain conditions pertaining to flow rates and fin heights. Utilizing heat exchangers equipped with LVGs has been found to enhance the output power of TEGs by 13.02% and improve the overall thermoelectric conversion efficiency by 17.72%. These improvements are observed under certain conditions, including specific flow rates, LVG tilt angles, and locations.

Preprint ARTICLE | doi:10.20944/preprints202207.0121.v8

The Big Bang Was Not the Beginning, but a Repeating Pattern of Expansion and Contraction of Spacetime

Amrit Ladhani

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Big Bang and Big Crunch; Cosmology; Dark Energy; Gravitational Force; The Cyclic Universe

Online: 26 September 2024 (09:52:37 CEST)

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Preprint REVIEW | doi:10.20944/preprints202409.1676.v1

On the Conservation Laws of General Theory of Relativity

Hiqmet Kamberaj

Subject: Physical Sciences, Theoretical Physics Keywords: General theory of relativity; energy-momentum density tensor of the matter; conservation laws

Online: 23 September 2024 (12:12:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1541.v1

Multi-Timescale Reactive Power Optimization and Regulation Method for Distribution Networks Under Multisource Interaction Environment

Hanying Zhou, Junyu Liang, Xiao Du, Mengtong Wu

Subject: Engineering, Electrical And Electronic Engineering Keywords: distribution network; distributed energy resources; model predictive control; voltage zoning control strategy ;

Online: 19 September 2024 (13:52:28 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202409.0620.v1

Design and Development of a Low-Cost Parabolic Type Solar Dryer and Its Performance Evaluation in Drying of King Fish – Case Study in Oman

Talal Al Haddabi1, Amuthakkannan Rajakannu

Subject: Engineering, Energy And Fuel Technology Keywords: Solar Energy; Parabolic Solar trough; Solar dryer; evacuated copper tube absorber; Specific heat

Online: 9 September 2024 (08:43:09 CEST)

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Dry Fish is a rich source of proteins and nutrients and can be eaten in many forms. Oman is one of the important fish producers in the world and having high demand in neighboring countries for Oman’s fish. Fishery sector is considered as one of the important economic development sector in sultanate of Oman. In the fishery sector, use of technology is not up to the mark because of less awareness of technology application among Omani fishermen. Also, there is a demand for a greater number of cold storages in different regions to store fresh fishes which is not materialized yet. Similarly, there is a demand of perfect and cheap technology in Oman to dry fishes to improve the profit to the fishermen. Solar energy is abundantly available in Oman and there are high possibilities in Oman to use solar energy in domestic and industrial applications. Since the sunlight is available throughout the year, it is possible to convert in to thermal energy or electrical energy. Electricity can be produced from photovoltaic principle (PV) or indirectly with concentrated solar power. Similarly, we can use solar concentrators for many thermal applications. The solar dryer is a device which is used to dry fruits, vegetables, leaves, clothes etc. If any of the items are dried with the help of solar energy, then we can save lot of non-renewable source of energy and can help to improve economy of the country. The sun can, at least seasonally at Oman’s latitudes, provide a substantial part of the energy needed for various applications. In this work, we used solar dryer to make dry fish with high quality. Use of parabolic type concentrator to dry the fish is an effective solution which is an innovative idea to the fishermen. The temperature variation in dryer is directly proportional to the intensity of solar. The tracking mechanism is a combination of electronic and mechanical design which tracks the sun automatically. In this work, a parabolic concentrator with automatic tracking mechanism was designed and the performance analysis have been done. In the design, copper tubes are used for heat transfer and then the hot fluid is circulated in the box which is used to dry the fishes. As per the experiment, fish drying efficiency obtained from solar dryer is 77.9% and it took 3 days to dry king fish of 20kg. There are many advantages in parabolic type solar concentrators relate to the quality of dryness in the fishes and time taken to dry the fishes which are elaborately discussed in this paper. This solar dryer technology will improve green environment and also will save non-renewable sources of sultanate of Oman for longer period of time.

Preprint REVIEW | doi:10.20944/preprints202409.0233.v1

Integrating Business Ecosystems and Social Networks: A Case Study on Sustainable Transitions

Thiago Felippe Ribeiro, Antonio Roberto Nogueira, Paula Chimenti

Subject: Business, Economics And Management, Business And Management Keywords: energy transition; business ecosystem footprint; business ecosystem theory; social network theory; interfunctional networks

Online: 3 September 2024 (17:59:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1787.v1

The Energy-Momentum Tensor of Electromagnetism Revisited

Serge Collin

Subject: Physical Sciences, Theoretical Physics Keywords: electromagnetism; Noether; canonical tensor; cosmology; dark matter; dark energy; general relativity

Online: 26 August 2024 (07:05:06 CEST)

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

Investigation of the Energy Dissipation Characteristics of a Nonlinear Suspension System

Uchenna Diala, Yunpeng Zhu, Rajintha Gunawardena

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

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

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Preprint ARTICLE | doi:10.20944/preprints202408.0569.v1

Identification of Relevant Research Topics Based on Pooled Bibliometric Data of International Journal of Hydrogen Energy Publications for 2022–2024 from the Lens and ScienceDirect Platforms

Boris Chigarev

Subject: Engineering, Energy And Fuel Technology Keywords: International Journal of Hydrogen Energy; The Lens; ScienceDirect; VOSviewer; Scimago Graphica; FP-growth

Online: 8 August 2024 (12:01:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2221.v1

Energy‐Efficient Clustering in Wireless Sensor Networks Using Grey Wolf Optimization and Enhanced CSMA/CA

Mohammed Kaddi, Mohammed Omari, Khouloud Salameh, Ali Alnoman, Mohammed Awad

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: wireless sensor networks; medium access control; routing protocols; cross‐layer protocols; energy consumption

Online: 30 July 2024 (11:55:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1939.v1

Construction and Case Analysis of Comprehensive Evaluation System of Rural Building Energy Consumption from Energy-Building-Behavior Composite Perspective

Zhong Xu, Xiaoqi Wang, Siqi Tang, Yan Yang, Yuhao Chen

Subject: Engineering, Architecture, Building And Construction Keywords: Rural Building; Energy Consumption; Low-Carbon Intensity (LCI); Analytic Network Process(ANP) Method

Online: 24 July 2024 (12:58:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1353.v1

Simulated Annealing Driven by the Free-Energy: The SAFE Algorithm

Arnab Barua, Haralampos Hatzikirou

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: Free-energy; Simulated Annealing; Mathematical Optimization; Monte-Carlo Methods; Convergence Time; Parameter Estimation

Online: 17 July 2024 (04:41:48 CEST)

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Preprint REVIEW | doi:10.20944/preprints202407.0734.v1

Advances in Corrosion of High-Temperature Materials: Interfacial Migration and Alloy Design Strategies

Aditya Narayan Singh, S. K. Swain, Abhishek Meena, Mobinul Islam, Kyung-Wan Nam

Subject: Engineering, Metallurgy And Metallurgical Engineering Keywords: Quantum electron transport (QET); degradation; hot-corrosion; catalysis; Gibbs free-energy; selective oxidation.

Online: 10 July 2024 (12:31:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0109.v1

Application of Quantum Neural Network for Solar Irradiance Forecasting: A Case Study Using the Folsom Dataset, California

Victor Oliveira Santos, Felipe Pinto Marinho, Paulo Alexandre Costa Rocha, Jesse Van Griensven Thé, Bahram Gharabaghi

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: renewable energy; solar irradiance forecast; quantum machine learning; machine learning; Folsom dataset; Qiskit

Online: 2 July 2024 (02:44:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1475.v1

Enhancing Efficiency of Nitrate Reduction to Ammonia by Fe and Co Nanoparticles Based Bimetallic Electrocatalyst

Irina Kuznetsova, Olga Lebedeva, Dmitry Kultin, Mikhail Mashkin, Konstantin B Kalmykov, Leonid Kustov

Subject: Chemistry And Materials Science, Electrochemistry Keywords: synthesis of ammonia; nitrate reduction; electrocatalysis; sustainable chemistry; energy chemistry; Fe-Co catalyst

Online: 21 June 2024 (07:13:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.2128.v1

Microstructure and Mechanical Properties of Laser Direct Energy Deposited Martensitic Stainless Steel 410

Hyun-KI KANG, Hyungsoo Lee, Chang-Seok Oh, Jongcheon Yoon

Subject: Engineering, Metallurgy And Metallurgical Engineering Keywords: Additive manufacturing; Directed energy deposition; Martensitic Stainless steel 410; Chrome car-bide; Tempering

Online: 31 May 2024 (10:56:03 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202405.2080.v1

On the Screened Kratzer Potential and Its Variants

Francisco Fernández

Subject: Physical Sciences, Mathematical Physics Keywords: Kratzer potential; screened Kratzer potential; vibrational-rotational spectrum; dissociation energy; equilibrium bond length

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

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Preprint ARTICLE | doi:10.20944/preprints202405.1444.v1

Does Climate Change and Energy Consumption Affect the Food Security of European Union Countries? Empirical Evidence from a Panel Study

Irena Łącka, Błażej Suproń, Iwona Szczepaniak

Subject: Business, Economics And Management, Econometrics And Statistics Keywords: cereal production; climate change; European Union; FGLS; CO2; energy; food security; panel data

Online: 23 May 2024 (08:21:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1074.v1

Validation of Ground Based Solar Irradiance Measurements against Meteosat-Msg and Himawari-8 Satellite Data

Jitendra Kumar Meher, Syed Haider Abbas Rizvi, Bhramar Choudhary, Ravi Choudhary, Yash Thakre, Ritesh Kumar, Vikram Singh

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: BSRN; Heliosat-2; Himawari-8; Meteosat-MSG; Renewable energy; Solar Radiation; Validation Study

Online: 16 May 2024 (11:55:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1012.v1

Study on Comprehensive Evaluation and Key Influencing Factors of Rural Building Energy Consumption from Energy-Building-Behavior Composite Perspective

Zhong Xu, Xiaoqi Wang, Siqi Tang, Yuhao Chen, Yan Yang, David Hui

Subject: Engineering, Architecture, Building And Construction Keywords: Rural Building; Energy Consumption; Low Carbon Degree(LCD); Analytic Network Process(ANP) Method

Online: 15 May 2024 (07:38:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0340.v1

Development and Implementation of a Smart Charging System for Electric Vehicles based on the ISO 15118 Standard

Jóni Buchinho Santos, André Mendes Botelho Francisco, Cristiano Lourenço Cabrita, Janio Monteiro, André Pacheco, Pedro Jorge Sequeira Cardoso

Subject: Engineering, Electrical And Electronic Engineering Keywords: Electric Vehicles; Smart Charging; Demand Response; ISO 15118; Smart Grids; Renewable Energy Sources

Online: 7 May 2024 (17:20:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0386.v1

Design of a Scratching Damper for Identification of Young’s Modulus and Hardness of Extruded Aluminum

Chun Nam Wong, Anand VYAS, Wai On WONG, Ruqi Sun

Subject: Engineering, Mechanical Engineering Keywords: scratching damper; scratch energy conservation; right-angled scratch head; extruded aluminum; Brinell hardness

Online: 7 May 2024 (11:56:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0103.v1

Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition

Alessandro Salmi, Gabriele Piscopo, Eleonora Atzeni, Adriano Nicola Pilagatti

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: additive manufacturing; process parameters; laser powder directed energy deposition; porosity; FE simulation; 316L

Online: 2 May 2024 (08:06:07 CEST)

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