Претрага
504 items
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A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach
Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependabilityNikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović. "A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach" in Applied Sciences, Basel, August 2024, MDPI (2024). https://doi.org/https://doi.org/10.3390/app14177947
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... STEVANOVIĆ Z., PAPIĆ P., 2008: The origin of groundwater. Groundwater management in large river basins, book chapter in Dimkić M., H.J. Brauch, M. Kavanaugh, IWA, London, 218–246. NIKIĆ Z., KOVAČEVIĆ J., PAPIĆ P., 2008: Uranium in the groundwater of permo- triassic aquifers of the Visok region ...
... karst-alluvial aquifer: case study of Prijedor Groundwater Source, Republic of Srpska, Bosnia and Herzegovina. Acta Carsologica, 42 (1), 93–107. DOI: 10.3986/ac.v42i1.638 POLOMČIĆ D., HAJDIN B., STEVANOVIĆ Z., BAJIĆ D., HAJDIN K., 2013: Groundwater management by riverbank filtration and an infiltration ...
... BELIČEVIĆ V., PAVLOVIĆ R., TRIVIĆ B., BOJOVIĆ M., LJUMOVIĆ G., 2007: GIS and remote sensing for improvement of groundwater management in Northern Alge- ria. XXXV Congress of the IAH Groundwater and Ecosystems, 17–21 September. Lisbon, Portugal PAVLOVIĆ, R., ĆALIĆ, J., DJUROVIĆ, P., TRIVIĆ, B., JEMCOV ...главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016
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Analiza hidrauličke veze između reke Save i podzemnih voda na izvorištu za vodosnabdevanje Obrenovca
Na izvorištu „Vić bare“ formiranom u aluvijonu Save za vodosnabdevanje Obrenovca u poslednje dve decenije izvedeno je više detaljnih hidrogeoloških istraživanja u cilju utvrđivanja rezervi podzemnih voda i izdvajanja zona sanintarne zaštite. Monitoring podzemnih voda u celoj zoni izvorišta, za potrebe izrade hidrodinamičkog modela, omogućio je i hidrauličku analizu odnosa površinskih voda reke Save i podzemnih voda na izvorištu sa kojeg se trenutno zahvata do 310 l/s vode. U radu su prikazani rezultati korelacione analize, odnosno ispitivanja na ...Dragoljub Bajić, Bojan Hajdin, Dušan Polomčić, Vesna Ristić Vakanjac. "Analiza hidrauličke veze između reke Save i podzemnih voda na izvorištu za vodosnabdevanje Obrenovca" in XVI Srpski simpozijum o hidrogeologiji sa međunarodnim učešćem, Zlatibor, 28.09.-02.10.2022., Beograd : Rudarsko-geološki fakultet (2022)
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Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas
This paper describes updated calculation methodology of Danube backwater impact, occurred as a consequence of “Đerdap I” hydropower plant operation, onto the meliorated riverside areas. This methodology is based on hydrodynamic analysis of groundwater regime (size, duration, level and inflow changes) and quantification of melioration areas impairment which is caused by “Đerdap I” hydropower plant operation. By comparing the groundwater regime elements, obtained by variant hydrodynamic calculation in mathematical models for natural – not backed up and actual – ...HPP ''Djerdap 1'', backwater influence, groundwater regime, hydrodynamic analysis, melioration area, drainage system, additional energy engagementPredrag Pajić, Uroš Urošević, Dušan Polomčić, Milan Dimkić. "Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas" in IWA Specialist Groundwater Conference, Conference Proceedings and Book of Abstracts, 09-11 June 2016, Belgrade, Serbia, Institut Jaroslav Černi (2016)
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Ocena kvaliteta i mogućnost korišćenja podzemnih voda za piće i navodnjavanje u slivu reke Ralje
Analiza mogućnosti korišćenja podzemnih voda za potrebe vodosnabdevanje stanovništva kao i za navodnjavanje vršena je na prostoru sliva reke Ralje. Istražni prostor veličine oko 280 km2 je obuhvatio veći deo sliva reke Ralje koji se administrativno nalaze na području grada Beograda. Podzemne vode su glavni izvor za vodosnabdevanje i navodnjavanje u ovom području. Seoska naselja nemaju urađenu komunalnu infrastrukturu pa predstavljaju značajan faktor za degradaciju kvaliteta podzemnih voda na ovom području. U periodu 2012-2014 godine prikupljeno je 100 uzorka ...Sunčica Ninković, Nebojša Atanacković, Sava Magazinović, Jakov Andrijašević, Mihailo Šević. "Ocena kvaliteta i mogućnost korišćenja podzemnih voda za piće i navodnjavanje u slivu reke Ralje" in XV Srpski simpozijum o hidrogeologiji sa međunarodnim učešćem, Kopaonik, 14-17.septembar 2016. godine, Univerzitet u Beogradu- Rudarsko-geološki fakultet (2016)
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Vebran Web Services for Corpus Query Expansion
Ranka Stanković, Miloš Utvić (2020)U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.... developed as a system of textual files, have become a large and complex lexical resource. An on-line applica- tion for dictionary development and management, based on a central lexical data repository (lexical database) is developed offering various possibilities for improvement of SMD, e.g. control of ...
... will be interpreted, which helps in the presentation of mathematical formulae. Rudonto is a terminological resource developed to support knowledge management in mining engineering, focusing on the application in mining equipment and mine safety domains. Through export to several specific for- mats, RudOnto ...
... Obradović, Olivera Kitanović and Aleksandar Cvjetić. “Development of terminological resources for expert knowledge: a case study in mining”. Knowledge Management Research & Practice Vol. 14, no. 4 (2016): 445–456. https://doi.org/10.1057/ kmrp.2015.10 116 Infotheca Vol. 19, No. 2, December 2019 Scientific ...Ranka Stanković, Miloš Utvić. "Vebran Web Services for Corpus Query Expansion" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.5
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... variability of coal quality in TZP, determining the geometry should be considered in the context of the other components of the Coal Quality Management System, and not separately. COAL QUALITY Regarding coal quality, an important parameter relates to the quality range of the parameter of interest ...
... 2298/TSCI130201031S 9. Zhao, S., Lu, T.F., Koch, B. and Hurdsman, A., 2015. 3D stockpile modelling and quality calculation for continuous stockpile management. International Journal of Mineral Processing, 140, pp.32-4 http://dx.doi.org/10.2298/TSCI130201031S ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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Stanje i perspektivnost vodosnabdevanja Obrenovca i naselja opštine posle poplava, 2014. godine
Obrenovac i okolna naselja su tokom 2014. godine zbog poplava u Srbiji pretpeli veliku materijalnu štetu, a pored brojnih privrednih preduzeća ozbiljno je bio ugrožen i sistem vodosnabdevanja. Izvorište „Vić bare“ za vodosnabdevanje grada u selu Zabrežje, na Savi, u potpunosti je potopljeno, a vodovodna mreža, u pojedinim delovima već veoma stara, dodatno je oštećena. Poslednjih nekoliko decenija kao glavni razlozi za probleme u vodosnabdevanju Obrenovca isticane su nedovoljne rezerve podzemnih voda na izvorištu. Novijim istraživanjima utvrđene su rezerve ...... vodosnabdevanje Obrenovca. Fond RGF, Departman za hidrogeologiju, Beograd, 2008. [4] Polomčić D, Hajdin B, Stevanović Z, Bajić D, Hajdin K. Groundwater management by riverbank filtration and an infiltration channel: the case of Obrenovac, Serbia. Hydrogeology Journal, Vol. 21, pp. 1519- 1530. Sp ...
... Hajdin B, Dokmanović P, Stevanović Z, Hajdin K. State of art of Vić Bare Source for Obrenovac Water Supply. Regional IWA Conference on groundwater management in the Danube river basin and other large river basins, Beograd pp. 217-225, 2007. [6] Hajdin B, Polomčić D, Stevanović Z, Bajić D, Hajdin ...
... harm. Over the past several decades, insufficient groundwater reserves have been one of the main water supply issues in Obrenovac. Recent investigations identified the reserves and the possibility of ensuring addi- tional amounts of groundwater at the existing source was explored. The largest problem ...Bojan Hajdin, Dušan Polomčić, Dragoljub Bajić. "Stanje i perspektivnost vodosnabdevanja Obrenovca i naselja opštine posle poplava, 2014. godine" in Tehnika, Beograd : Savez inženjera i tehničara Srbije (2017). https://doi.org/10.5937/tehnika1705675H
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Infotheca (Q25460443) in Wikidata
Ranka Stanković, Lazar Davidović (2021)Vikipodaci su baza znanja Zadužbine Vikimedija koja predstavlja zajednički izvor različitih vrsta podataka koje koriste ne samo drugi Vikipedijini projekti, već sve više i brojne aplikacije semantičkog veba. U ovom radu ćemo prezentovati primer integracije Vikipodataka sa digitalnim bibliotekama i eksternim sistemima, kao i mogućnost ubrzanja pripreme i unosa podataka na primeru radova iz časopisa za digitalnu humanistiku Infoteka.... semantic web to act the part, computers should have access to structured collections of information and be able to set out defined rules of automated management. Wikidata actually fits the trends of information technology development that extend the boundary from machine readable to machine comprehensible ...
... Stanković, Ranka, Cvetana Krstev, Biljana Lazić, and Dalibor Vorkapić. 2015. “A bilingual digital library for academic and entrepreneurial knowledge management.” In Proceeding of 10th International Forum on Knowledge Asset Dynamics-IFKAD, 1764–1777. Андоновски, Jелена. 2020. “Мрежа отворених података и ...Ranka Stanković, Lazar Davidović. "Infotheca (Q25460443) in Wikidata" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.5
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Метода променљивих околина за решавање проблема p-центра са поузданом мрежом
У овом раду је разматран проблем p-центра са поузданом мрежом (енгл. Reliable p-center facility location problem - RpCFLP). Решавање проблема подразумева иницијално успостављање p ресурса и алокације корисника, као и накнадну реалокацију корисника у складу са новонасталим сценаријима који садрже информације о онеспособљеним ресурсима и осталим измењеним улазним подацима. За решавање посматраног проблема предложена је метахеуристика заснована на итеративној варијанти основне методе променљивих околина (енгл. Iterated basic variable neighborhood search - IBVNS). Резултати тестирања предложене метахеуристике указују на њену ...Јована Рађеновић, Стефан Мишковић, Оливера Станчић. "Метода променљивих околина за решавање проблема p-центра са поузданом мрежом" in 50. Међународни симпозијум о операционим истраживањима SYM-OP-IS, Тара, Србија, 18-21.9.2023, Београд : Медија центар „Одбрана” (2023)
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Linearization of Input Signal as a Necessary Tool in Stochastic Modeling of Karst Groundwater
Veljko Marinović (2021)Modelling of karst hydrogeological systems is a very complicated task, bearing in mind that for a deterministic model one should know the internal physical processes of precipitation transformation into discharge, while for a stochastic model nonlinear dynamic systems such as karst should be simulated by linear regression equations. Stochastic models need linearization of input time series due to often large residual in the recession period. This occur because the model is not able to absorb single rain episodes, which ...Veljko Marinović. "Linearization of Input Signal as a Necessary Tool in Stochastic Modeling of Karst Groundwater" in Karst: From Top to Bottom, Belgrade, 6.6.2021., Belgrade : Centre for Karst Hydrogeology (2021)
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Multicriteria Analysis and Optimization of Groundwater Control Systems with Variable Values of Criterion over Predefined Time Points
Milica Stepanović, Dragoljub Bajić, Dušan Polomčić. "Multicriteria Analysis and Optimization of Groundwater Control Systems with Variable Values of Criterion over Predefined Time Points" in Comptes rendus de l'Académie Bulgare des Sciences, "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences (2021). https://doi.org/10.7546/CRABS.2021.08.09
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Дефинисање хидрауличког механизма истицања карстних подземних вода применом биваријантне анализе временских серија
Вељко Мариновић (2022)Bivariate analysis was applied within the cross-correlation in time and the gain function as part of the cross-spectral function in the frequency domain, to the time series of precipitation and discharge of the Oko Bijela and Bosna karst springs in the period 2015-2020. Bivariate analysis showed a very fast reaction of the Oko Bijela spring and a reaction delay at the Bosna spring, which indicate a very weak amortization of the input signal within the Oko Bijela system and ...Вељко Мариновић. "Дефинисање хидрауличког механизма истицања карстних подземних вода применом биваријантне анализе временских серија" in Мултидисциплинарна конференција “Kарст 2022 - Значај, стање и перспективе коришћења и заштите ресурса у карсту", Српска академија наука и уметности (2022)
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Multi-Criteria Fuzzy-Stochastic Diffusion Model of Groundwater Control System Selection
When considering data and parameters in hydrogeology, there are often questions of uncertainty, vagueness, and imprecision in terms of the quantity of spatial distribution. To overcome such problems, certain data may be subjectively expressed in the form of expert judgment, whereby a heuristic approach and the use of fuzzy logic are required. In this way, decision-making criteria relating to an optimal groundwater control system do not always have a numerical value. Groundwater control scenarios (alternatives) are identified through hydrodynamic ...expert judgment, linguistic variables, fuzzy dynamic TOPSIS, hydrogeology, groundwater control system, open-cast mine, geometric Brownian motionDušan Polomčić, Zoran Gligorić, Dragoljub Bajić, Miloš Gligorić, Milanka Negovanović. "Multi-Criteria Fuzzy-Stochastic Diffusion Model of Groundwater Control System Selection" in Symmetry, MDPI AG (2019). https://doi.org/10.3390/sym11050705
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Multiple-Criteria Decision-Making in Mine Development Planning
Sanja Bajić (2023)The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.Sanja Bajić. "Multiple-Criteria Decision-Making in Mine Development Planning" in Proceedings of the 5th International Underground Excavations Symposium, 5-6-7 June 2023, Istanbul, Topkapi : Dinç Ofset Mat. Rek. San. ve Tic. Ltd. Şti. (2023)
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Development of Open Educational Resources (OER) for Natural Language Processing
In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...... Metadata Portal (BMP) with metadata for all published OER within BAEKTEL network (http://meta.baektel.eu). Terminological web application for management, browse and search of terminological resources (work in progress). Web services for linguistic support (query expansion, information retrieval ...
... BAEKTEL platform (Basics of Theory of Formal Languages, Information Retrieval, etc.). LITERATURE [1] Carlucci, D., et al., A platform for management of academic and entrepreneurial knowledge, in IFKAD 2015 - 10th International Forum on Knowledge Asset Dynamics: Culture, Innovation and E ...Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević. "Development of Open Educational Resources (OER) for Natural Language Processing" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Pre-failure deformation monitoring as rockfall prediction tool
... conditions. These precursory indicators are the subject of this research, which supports standardization of the monitoring practice in the rockfall management. One isolated rockfall example will be presented, while the entire rock slope will be analyzed in greater depth in the near future. 1.1. Related ...
... Hutchinson D J, Lato M J, Gauthier D and Edwards T 2015 Identifying rock slope failure precursors using LiDAR for transportation corridor hazard management. Eng. Geol. 195 93–103 [5] De Vilder S J, Rosser N J and Brain M J 2017 Forensic analysis of rockfall scars. Geomorphology 295 202–214 [6] ...Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić. "Pre-failure deformation monitoring as rockfall prediction tool" in IOP Conference Series: Earth and Environmental Science, IOP Publishing (2021). https://doi.org/10.1088/1755-1315/833/1/012197
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Extreme Rainfall Event and Its Aftermath Analysis—IPL 210 Project Progress Report
Biljana Abolmasov, Mileva Samardžić Petrović, Ranka Stanković, Miloš Marjanović, Jelka Krušić, Uroš Đurić (2021)Biljana Abolmasov, Mileva Samardžić Petrović, Ranka Stanković, Miloš Marjanović, Jelka Krušić, Uroš Đurić. "Extreme Rainfall Event and Its Aftermath Analysis—IPL 210 Project Progress Report" in Understanding and Reducing Landslide Disaster Risk, Springer International Publishing (2021). https://doi.org/10.1007%2F978-3-030-60196-6_19
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Multivarijabilni modeli upravljanja u rudarstvu
Marjan M. Hudej (2014-02-03)osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...... upravljanja u rudarstvu;Multi-variable models of management in mining Marjan M. Hudej Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Multivarijabilni modeli upravljanja u rudarstvu;Multi-variable models of management in mining | Marjan M. Hudej | Универзитет у ...
... 004:005.1/.311/.7:007.528.28 513.3:519.816/.82/.87 621:622.27:629.3:681.5 (043.3) MULTI-VARIABLE MODELS OF MANAGEMENT IN MINING Abstract The decision making and management in mining engineering are characterized by complexity, variability, ambiguity, sensibility and risk. There are several ...
... Beograd, 2013 UNIVERSITY OF BELGRADE FACULTY OF MINING AND GEOLOGY Marjan M. Hudej MULTI-VARIABLE MODELS OF MANAGEMENT IN MINING Doctoral Dissertation Belgrade, 2013 Mentor: dr Slobodan VUJIĆ, redovni profesor ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
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Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija
Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)... Conventions (Directive 98/83/EC: Quality of water intended for human consumption, Directive Drinking Water [32]; Directive 80/68/EEC: Protection of groundwater against pollution caused by certain dangerous substances [33]; Directive 93/67/EEC: Risk Assessment for new notified substances [34]; Directive ...
... Gazette, No. 93/2012) [39]; (3) By-laws, regulations, instructions, directives regulation on the threshold values of pollutants in surface waters, groundwater and sediment and deadlines for their achievement (2012) (RS Official Gazette, No. 50/2012) [40]. Unanimous compliance with the Constitution of the ...
... eu/legal-content/EN/TXT/?uri= CELEX%3A31998L0083 (accessed on 25 August 2016). 33. Council Directive 80/68/EEC of 17 December 1979 on the Protection of Groundwater against Pollution Caused by Certain Dangerous Substances. Available online: http://eur-lex.europa.eu/legal-content/EN/ TXT/?uri=CELEX%3A31980L0068 ...Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić. "Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija" in Energies, MDPI AG (2016). https://doi.org/10.3390/en9110935