Претрага
700 items
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Business Models for Small-scale Biomass Projects Development
Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...... Biomass Project in Kostojevići Centralized model The centralized model represents the continuation of the existing practice, i.e. the financing of costs of heating in public buildings in Kostojevići from the budget of the City of Bajina Bašta. This model also means that the investment in the proposed ...
... operator. The scheme of functioning of this business model is shown in Figure 1. This concept is widely implemented in some of the most developed European countries [7]. Figure 1: Operating model for citizen cooperative [8] Energy cooperative model is primarily interesting for development of district ...
... community comes only after the expiry of the initial contract period. The scheme of functioning of ESCO business model is shown in Figure 2. Figure 2: ESCO model [8] From the point of ESCO model implementation, the project of replacement of existing boiler in local school by woodchips boiler has all desirable ...Dejan Ivezić, Miodrag Gluščević, Marija Živković. "Business Models for Small-scale Biomass Projects Development" in 19th International Conference on Thermal Science and Engineering of Serbia, Niš : Faculty of Mechanical Engineering (2019)
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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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Application of Peleg model on mass transfer kinetics during osmotic dehydratation of pear cubes in sucrose solution
Vesna Pavelkić, Tanja Brdarić, Marija Petrović, Gavrilo Šekularac, Milica Košević, Lato Pezo, Marija Ilić (2015)The applicability of Peleg model was investigated for predicting mass transfer kinetics during the osmotic dehydration (OD) process of pears, at different concentrations (40, 60 and 70%, w/w) and temperatures (20, 35 and 50 °C) of sucrose solution. Increase in sucrose solution concentration resulted in higher water loss (WL) and solid gain (SG) values through the osmotic treatment period. After 360 min of osmotic treatment of pears, WL ranged from 23.71 to 31.68% at 20 °C, from 24.80 to ...Vesna Pavelkić, Tanja Brdarić, Marija Petrović, Gavrilo Šekularac, Milica Košević, Lato Pezo, Marija Ilić. "Application of Peleg model on mass transfer kinetics during osmotic dehydratation of pear cubes in sucrose solution" in Chemical Industry and Chemical Engineering Quarterly (2015). https://doi.org/10.2298/CICEQ141014004P
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Representativeness of hydrodynamic models - overview of modern technics in model developing and model calibration
Polomčić Dušan, Bajić Dragoljub, Ratković Jelena. "Representativeness of hydrodynamic models - overview of modern technics in model developing and model calibration" in Proceedings of the XV Serbian Symposium on Hydrogeology, Belgrade:University of Belgrade - Faculty of mining and geology (2016): 33-50
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Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"
Nikola Mirković, Luka Crnogorac, Aleksa Paunović. "Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"" in 15. Simpozijum „Rudarstvo 2024“ Održivi razvoj u rudarstvu i energetici, Vrnjačka banja, 21-24. maj 2024., Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina (2024)
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Reprezentativnost hidrodinamičkih modela – prikaz savremenih tehnika u izradi i etaloniranju modela
MODFLOW, nestruktuirane mreže, PEST, pojedinačnog razlaganja parametara, metoda Null Space Monte CarloDušan Polomčić, Dragoljub Bajić, Jelena Ratković. "Reprezentativnost hidrodinamičkih modela – prikaz savremenih tehnika u izradi i etaloniranju modela" in Zbornik radova XV Srpski simpozijum o hidrogeologiji sa međunarodnim učešćem, Kopaonik, 14-17. septembar 2016. godine, Rudarsko-geološki fakultet (2016)
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Application of the autoregressive model, grey model and biplot method to groundwater sources
Jelena Ratković, Dušan Polomčić, Zoran Gligorić, Dragoljub Bajić. "Application of the autoregressive model, grey model and biplot method to groundwater sources" in Proceedings of the XVIII Serbian Geological Congress, Divčibare, Serbia, 01-04 June 2022, Serbian Geological Society (2022)
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Analysis of the Influence of Burden Deviation from the Designed One on the Intensity of the Blast Vibration
Stefan Milanović, Lazar Kričak, Milanka Negovanović, Nikola Simić, Jovan Marković, Nikola Đokić (2023)This paper presents an analysis of the influence of burden deviation from the designed one on the intensity of blasting vibrations through the use of laboratory and field examinations. By definition, the burden represents the shortest distance from the axis of an explosive column charge to the free surface. It should be measured along the entire hole length, although, in practice, it is often measured only on the bench surface as the shortest distance from the axis of the ...Stefan Milanović, Lazar Kričak, Milanka Negovanović, Nikola Simić, Jovan Marković, Nikola Đokić. "Analysis of the Influence of Burden Deviation from the Designed One on the Intensity of the Blast Vibration" in Applied Sciences, MDPI AG (2023). https://doi.org/10.3390/app132312837
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Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)
A groundwater flow model was developed to simulate groundwater extraction from the public water supply source of the City of Kikinda. The hydrodynamic model includes the municipal groundwater source of Kikinda (Šumice and the Jezero Well), but also an extended area where there are groundwater sources that provide water supply to three factories: (MSK, TM and LŽT - Kikinda). Hydrodynamic modeling, based on the numerical method of finite differences will show the groundwater balance of the sources in the ...... 10-3 8.5 × 10-3 1995 CONCEPTUAL (HYDROGEOLOGICAL) MODEL The conceptual model of the hydrogeological system is based on geological information on the boreholes (Figure 2) and water-level fluctuations in observation wells. The conceptual model was designed according to the actual groundwater flow ...
... comprised of semi-permable and impermeable sediments. Figure 4. 3D hydrogeological model of the groundwater source of Šumice, 230o azimuth section HYDRODYNAMIC MODEL The concept of the hydrodynamic model of the groundwater sources that provide water supply to Kikinda is based on the simulation ...
... groundwater flow, as well as the goal of the task at hand, were of primary importance in selecting the mathematical model concept. A multi-layered model was developed. The hydrodynamic model represented the municipal groundwater source of Kikinda (the source at Šumice and the Jezero Well), but also the ...Dušan Polomčić, Dragoljub Bajić, Jelena Zarić. "Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)" in Journal of Sustainable Development of Energy, Water and Environment Systems (2015). https://doi.org/10.13044/j.sdewes.2015.03.0017
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Optimalni model analize i procene potvrdivosti rezervi
(1998)Optimalni model analize i procene potvrdivosti rezervi, Beograd:Rudarsko-geološki fakultet, 1998
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Multivarijabilni modeli upravljanja u rudarstvu
Marjan Hudej (2014)Marjan Hudej. Multivarijabilni modeli upravljanja u rudarstvu, Beograd:Rudarsko Geološki Fakultet, 2014
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Model upravljanja industrijskim otpadom RMHK Trepča
Nataša Elezović (2006)Nataša Elezović. Model upravljanja industrijskim otpadom RMHK Trepča, Beograd:Rudarsko-geološki fakultet, 2006
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Definisanje modela konsolidacije rudnika sa podzemnom eksploatacijom u Srbiji
Dragan Zlatanović (2010)Dragan Zlatanović. Definisanje modela konsolidacije rudnika sa podzemnom eksploatacijom u Srbiji, Beograd:Rudarsko Geološki Fakultet, 2010
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Model upravljanja investicionim projektima otvaranja površinskih kopova uglja
Cvjetko P. Stojanović (2015)Cvjetko P. Stojanović. Model upravljanja investicionim projektima otvaranja površinskih kopova uglja, Beograd:Rudarsko Geološki Fakultet, 2015
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Izbor racionalne konstrukcije i tehničkih parametara eksploatacionog bloka primenom matematičkog modela
Branko Kapor (1972)Branko Kapor. Izbor racionalne konstrukcije i tehničkih parametara eksploatacionog bloka primenom matematičkog modela, Beograd:Rudarsko-geološki fakultet, 1972
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Formiranje fizičkog modela karstne izdani na primeru Beljanice (Istočna Srbija)
Saša Milanović (2010)Saša Milanović. Formiranje fizičkog modela karstne izdani na primeru Beljanice (Istočna Srbija), Beograd:Rudarsko Geološki Fakultet, 2010
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Optimizacija i planiranje površinskih kopova stohastičkim modelima
Dejan R. Stevanović (2015)Dejan R. Stevanović. Optimizacija i planiranje površinskih kopova stohastičkim modelima, Beograd:Rudarsko Geološki Fakultet, 2015
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Pregled hidrodinamičkih istraživanja bunara sa horizontalnim drenovima numeričkim metodama
U radu je predstavljen pregled odabranih hidrodinamičkih istraživanja realizovanih primenom numeričkih metoda simulacije kretanja podzemnih voda pod uticajem rada bunara sa horizontalnim drenovima. Na osnovu pristupa u matematičkom i hidrauličkom tretiranju, kao i numeričkoj simulaciji bunara sa horizontalnim drenovima na modelima, predstavljeni su najznačajniji aspekti izrade hidrodinamičkih modela ovog kompleksnog tipa vodozahvatnog objekta. Metodologija obuhvata izbor: a) graničnih uslova za simulaciju prirodnih granica, izvora prihranjivanja i dreniranja izdani; b) primenjivanog stepena diskretizacije prostora obuhvaćenog modelom u planu i profilu; ...horizontalni bunari, hidraulika bunara, analitički modeli, numerički modeli, hidrodinamičko modeliranje podzemnih vodaĐorđije Božović, Dušan Polomčić, Dragoljub Bajić. "Pregled hidrodinamičkih istraživanja bunara sa horizontalnim drenovima numeričkim metodama" in Vodoprivreda, Srpsko društvo za odvodnjavanje i navodnjavanje (2020)
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Стратешко планирање функционалности подземних просторија моделом прогнозе деформација
Лука Црногорац (2023)Релативно велике деформације подградне конструкције у подземним рудницима угља у Републици Србији представљају један од главних проблема за постизање планиране производње угља. Деформације подграде су директна последица статичких и динамичких оптерећења стенске масе и у многоме зависе и од времена трајања изложености подграде утицају подземног притиска. Код ниско механизованог радног процеса долази до повећаног излагања подземних просторија утицају подземног притиска услед дугог производног циклуса који је често пропраћен застојима у раду. Веома често подземне просторије се санирају и по ...Лука Црногорац. Стратешко планирање функционалности подземних просторија моделом прогнозе деформација, Београд : [Л. Црногорац], 2023
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Simulacioni modeli tehnologije rada bagera i odlagača na površinskim kopovima uglja
Vojislav Krstić (1998)Vojislav Krstić. Simulacioni modeli tehnologije rada bagera i odlagača na površinskim kopovima uglja, Beograd:Rudarsko-geološki fakultet, 1998