Претрага
504 items
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... yielded the “weights” of the alternatives and the best alternative was selected for groundwater control at the site of the pumping station “Bezdan 1”. Key words: groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process, expert knowledge, triangular fuzzy numbers, linguistic ...
... an application of multicriteria fuzzy optimization - the so-called fuzzy analytic hierarchy process (FAHP), to select the optimal groundwater management scenario (groundwater control system) for the pumping station “Bezdan 1” (“Bezdan 1” PS), out of three alternatives derived from the hydrodynamic analysis ...
... full or no such mem- bership, today fuzzy logic is a management method which, despite its early stage, is increasingly used in all fields of science, including hydrogeology - groun- dwater management, water quality management, dewatering and groundwater control, etc. (AZARNI- VAND et al. 2004; SINGH et ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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Long-term planning methodology for improving wood biomass utilization
The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković. "Long-term planning methodology for improving wood biomass utilization" in Energy, Elsevier BV (2019). https://doi.org/10.1016/j.energy.2019.03.105
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Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin
Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović. "Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin" in Carpathian Journal of Earth and Environmental Sciences (2014)
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Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela
Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić (2010)... ugrani nih vodnih tela VODOPRIVREDA 0350-0519, 42 (2010) 246-248 p. 223-235 235 [10] Stevanovi , Z., 2008: Sustainable transboundary groundwater management: SE Europe and the Balkans. European Geologist, 25, pp. 17-18. EFG, Brussels [11] UNECE, 2000: Guidelines on monitoring and assessment ...
... KLJAJI Department of Hydrogeology, Faculty of Mining and Geology University of Belgrade, Djusina 7, Belgrade Summary Transboundary groundwater management is today a very actual issue. Many multi or bilateral projects of this type had been worldwide initiated and drafted, but just a very few ...
... koris¢enje Madarsko-Srpskih medugraniénih vodnih tela [10]Stevanovic, Z., 2008: Sustainable transboundary groundwater management: SE Europe and _ the Balkans. European Geologist, 25, pp. 17-18. EFG, Brussels [11]UNECE, 2000: Guidelines on monitoring and assessment of transboundary groundwaters, Work Programme ...Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić. "Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela" in Vodoprivreda 42 no. 04-Jun, Beograd : Jugoslovensko društvo za odvodnjavanje i navodnjavanje (2010): 223-235
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Imputing missing data using grey system theory and the biplot method to forecast groundwater levels and yields
Groundwater management is one of today’s important tasks. It has become necessary to seek out increasingly reliable methods to conserve groundwater resources. Dependable forecasting of the amounts of groundwater that can be abstracted in a sustainable manner requires longterm monitoring of the groundwater regime (rate of abstraction and groundwater levels). Monitoring of the groundwater source for the town of Bečej, Serbia had been disrupted for multiple years. The objective of the paper is to assess the possibility of reinterpreting ...Jelena Ratković, Dušan Polomčić, Zoran Gligorić, Dragoljub Bajić. "Imputing missing data using grey system theory and the biplot method to forecast groundwater levels and yields" in Geologia Croatica, Hrvatski geološki institut (2022). https://doi.org/10.4154/gc.2022.14
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Transboundary groundwater resources of Serbia - present status and future needs for sustainable management
Republic of Serbia is located at the crossroads of Southeast and Central Europe and belongs to the Central Balkans. With its 88,360 km2, Serbia is one of the larger countries of the Balkan Peninsula. It borders 8 countries and has at least one transboundary aquifer (TBA) with each of them. According to evaluation conducted for UNECE in 2008, Serbia has a total of 17 TBAs, out of which 15 are shared with one neighboring country, while two aquifers are shared with two or three ...Veljko Marinović, Branislav Petrović, Zoran Stevanović. "Transboundary groundwater resources of Serbia - present status and future needs for sustainable management" in Second International UNESCO Conference on Transboundary Aquifers, “ISARM2021: Challenges and the way forward”, Paris 2021, United Nations Educational, Scientific and Cultural Organization, 7, place de Fontenoy, 75352 Paris 07 SP, France (2021)
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Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP
Boban Pavlović, Nikola Trtica (2024)This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...... Summary of scenario characteristics. Scenario | ETS Additional Emissions Subsidyon ~ Elasticity of price - private in 2030 household - electricity in investments — [kgCOzcq/ - _ electricity demand 2030 kWh] [6] Scenario 75 No 0.75 No —0.07 1 Scenario 150 No 0.75 Yes -0.10 2 Scenario 150 Yes ...
... differences for each scenario are illus- trated using bar charts. The smallest decline in GDP projections is expected in Scenario 1, which assumes a static response and no specific measures other than the reinvestment of ETS revenue, resulting in a —1.4% decline. In Scenario 2, which assumes ...
... household energy-saving measures than in Scenario 1 (higher elasticity in Scenario 2), will not reduce the shock of the ETS introduction and may even increase it in the initial period before the effects of investment effects. It should be noted that this scenario also predicts a more ambitious increase ...Boban Pavlović, Nikola Trtica. "Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP" in Utilities Policy, Elsevier BV (2024). https://doi.org/10.1016/j.jup.2024.101855
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Environmental Energy Security Indicators as Tools for Environmental Protection
Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост... were analysed in model. Results of combined scenario of OPT scenario of infrastructure development with Referent consumption scenario is presented. Figure 2 and Table 7 shows the affiliation of Environmental energy security indicator for OPT-Referent scenario which is characterized by intensive in ...
... energy security indicator. 4. SCENARIO DEVELOPMENT AND RESULTS 4.1 Natural gas energy scenario development For the purpose of demonstrating the impact of energy security on environmental protection, through the Indicator of environmental acceptability, the scenario of development of the natural ...
... consideration: • The pessimistic scenario for the development of natural gas infrastructure (PES) assumes a lack of investment in new infrastructure projects and the retention of the current level of infrastructure development [23]; • The reference scenario (BAU) envisages the development of ...Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević. "Environmental Energy Security Indicators as Tools for Environmental Protection" in Mining and Environmental Protection-MEP 2019, University of Belgrade, Faculty of Mining and Geology (2019)
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Concept od predictive hydrodynamic calculations: An overview of the case studies from Serbia
Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Vesna Ristić Vakanjac, Marina Čokorilo Ilić (2019)groundwater management, hydrodynamic model, multiple-criteria decision making, open cast mine, groundwater source.0Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Vesna Ristić Vakanjac, Marina Čokorilo Ilić. "Concept od predictive hydrodynamic calculations: An overview of the case studies from Serbia" in National Conference with international participation “Geosciences 2019”, Bulgaria, 2019, Sofia : Bulgarian Geological Society (2019)
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Stochastic Prediction of Temporal Variations of Karst Groundwater Regime in Function of Sustainable Management: Case Study Mokra Karst Spring (SE Serbia)
Veljko Marinović, Branislav Petrović (2021)Veljko Marinović, Branislav Petrović. "Stochastic Prediction of Temporal Variations of Karst Groundwater Regime in Function of Sustainable Management: Case Study Mokra Karst Spring (SE Serbia)" in Karst: From Top to Bottom, Belgrade, 6.6.2021., Belgrade : Centre for Karst Hydrogeology (2021)
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Climate change and their imapct on karst groundwater
Milan Đelić, Vesna Ristić Vakanjac (2021)In the last 30 years, there have been progressively more dry and rainy years, a reduced presence or even absence of snow cover, an increase in air temperature, large-scale fires, intensified glacier melting, and the like. Climate change certainly has an effect on all areas of economic activity, but its largest impact is on water resources and existing ecosystems. One of the most important water resources is groundwater, on account of which more than 70% of the population of ...Milan Đelić, Vesna Ristić Vakanjac . "Climate change and their imapct on karst groundwater" in Book of proceedings of the 3rd International Scientific Conference on vircular and bioeconomy CIBEK2021, Belgrade, Belgrade : School of Engineering Management (2021)
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Application of the principle of circular economy to the thermal groundwater, the example of the municipality of Bogatić
There are about 360 locations of thermal and thermo-mineral waters in Serbia, whose water temperatures range from 14 to 98°C, which ranks Serbia as the richest European country in geothermal energy. The mentioned water resources (thermal and thermomineral waters) are used, mostly, for therapeutic purposes in spas and sports and recreational centers. The main problem that is present is the fact that they are not used in a rational and efficient way. The paper will give examples territorially related ...Marija Jovanović, Vesna Ristić Vakanjac. "Application of the principle of circular economy to the thermal groundwater, the example of the municipality of Bogatić" in Book of proceedings of the 3rd International Scientific Conference on vircular and bioeconomy CIBEK2021, Belgrade, Belgrade : School of Engineering Management (2021)
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Методологија интегралне анализе сценарија енергетског развоја
Александар Маџаревић (2019)енергетска безбедност, сценарио развоја, фази логика, сигурност снабдевања, доступност, расположивост, природни гас... Комбинација сценарија Сценарији инфраструктурног развоја сектора природног гаса Сценарији потрошње природног гаса SC1 БАУ Референтни SC2 БАУ Сценарио интензивне потрошње SC3 ОПТ Референтни SC4 ОПТ Сценарио интензивне потрошње SC5 ПЕС Референтни SC6 ПЕС Сценарио интензивне ...
... функција врсте сценарија инфраструктурног развоја који сачињава комбиновани сценарио. Поменуте вредности идентичне су за по 2 комбинована сценарија који садрже у себи БАУ сценарио инфраструктурног развоја (SC1и SC2), ОПТ сценарио инфраструктурног развоја (SC3 и SC4) и ПЕС сценарио инфраструктурног ...
... понашања, • Истраживачки (стратегијски) сценарији или предиктивни сценарији и • ,,Backcasting’’ или нормативни сценарији. БАУ ИСТРАЖИВАЧКИ НОРМАТИВНИ Слика 2.1 Три класе сценарија БАУ2 сценарији се пројектују уз претпоставку да ће се друштво и технологије развијати по устаљеној ...Александар Маџаревић. Методологија интегралне анализе сценарија енергетског развоја, Рударско-геолошки факултет, 2019
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Primena modela transporta idealne čestice na primeru razvoja Površinskog kopa Jakovačka Kumša
Hidrodinamičkim proračunima transporta „idealne“ čestice prikazan je uticaj eksploatacije peskova sa površinskog kopa „Jakovačka Kumša“ na beogradsko izvorište podzemnih voda. Potencijalnu opasnost od zagađenja podzemnih voda izvorišta za vodosnabdevanje čini skup različitih procesa koji se odvijaju na površinskom kopu. U radu je prikazano poređenje dva modela transporta idealne čestice. Prvi model se odnosi na analizu putanje i vremena putovanja idealne čestice od površinskog kopa do izvorišta za stanje pre otvaranja kopa, dok se drugi model odnosi na stanje kada ...upravljnje podzemnim vodama, zaštita podzemnih voda, hidrodinamički model, metoda praćenja „idealne“ čestice, modflow, modpathDušan Polomčić, Dragoljub Bajić, Vesna Ristić Vakanjac, Marina Čokorilo Ilić. "Primena modela transporta idealne čestice na primeru razvoja Površinskog kopa Jakovačka Kumša" in 9. Međunarodni simpozijum o upravljanju prirodnim resursima, Faculty of Management, Zajecar, Megatrend University, Belgrade (2019)
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Karst wastewater as a high quality, renewable and within the circular economy water resource
Jovana Nikolić, Vesna Ristić Vakanjac (2021)High quality drinking water in it’s natural state is becoming less and less available to the human population. Based on the expected climate changes, it is considered that this resource will be less in the world but also in our region. Also, the accompanying polluting components that exceed the maximum allowable concentration are increasingly present in the waters. Even after the water treatment, it happens that some components are still in the drinking water, which adversely affects human health. ...Jovana Nikolić, Vesna Ristić Vakanjac. "Karst wastewater as a high quality, renewable and within the circular economy water resource" in Book of proceedings of the 3rd International Scientific Conference on vircular and bioeconomy CIBEK2021, Belgrade, Belgrade : School of Engineering Management (2021)
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Metodologija određivanja vremena i putanje zagađivača na primeru zaštite izvorišta podzemnih voda
Dušan Polomčić, Dragoljub Bajić, Vesna Ristić Vakanjac, Jelena Ratković, Marina Čokorilo Ilić (2018)Analiza vremena putovanja potencijalnog zagađivača do bunara izvorišta podzemnih voda predstavlja veoma bitan segment kod upravljanja i zaštite podzemnih voda. Ova metodologija se zasniva na simulaciji kretanja nereagujuće čestice sa podzemnim vodama i poroznom sredinom (“idealna” čestica). Rezultati hidrodinamičkog modela, kojim se vrši simulacija režima podzemnih voda, predstavljaju osnovu za model praćenja “idealne” čestice. Postoje različiti softveri koji se koriste u hidrogeološkoj praksi za analizu problema zagađivača. U ovom radu korišćen je numerički kod Modpath, dok je za simulaciju ...upravljnje podzemnim vodama, zaštita podzemnih voda, hidrodinamički model, metoda praćenja „idealne“ čestice, modflow, modpath.Dušan Polomčić, Dragoljub Bajić, Vesna Ristić Vakanjac, Jelena Ratković, Marina Čokorilo Ilić. "Metodologija određivanja vremena i putanje zagađivača na primeru zaštite izvorišta podzemnih voda" in Zbornik radova nacionalne konferencije sa međunarodnim učešćem ekoremedijacija i ekonomska valorizacija vodnih resursa-modeli i primena, Fakultet za primenjenu ekologiju Futura, Univerzitet Singidunum, Beograd (2018)
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The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... Convers. Manag. 2014, 88, 589–597. [CrossRef] 41. Amer, M.; Jetter, A.J.; Daim, T.U. Scenario planning for the national wind energy sector through Fuzzy Cognitive Maps. In Proceedings of the PICMET’13: Technology Management in the IT-Driven Services (PICMET), San Jose, CA, USA, 28 July–1 August 2013; pp ...
... Scenarios of Infrastructure Development Scenarios of Natural Gas Consumption SC1 BAU HIST scenario SC2 BAU HGH scenario SC3 OPT HIST scenario SC4 OPT HGH scenario SC5 PES HIST scenario SC6 PES HGH scenario These six combined scenarios were analyzed in order to evaluate energy security assessment. ...
... Natural Gas Infrastructure Development BAU PES OPT Projection of Natural gas Use [million m3 per day] HIST Scenario HIGH Scenario HIST Scenario HIGH Scenario HIST Scenario HIGH Scenario TPC 15.93 11 24.41 IPG 2016 1.11 IPG 2020 1.105 IPG 2025 0.78 MWUS 9.96 4.95 9.96 MW LNG 0 LGI 11 MDC ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
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Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema
Svetlana M. Štrbac-Savić (2016-06-10)Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija... (4.22) Jednaĉina (4.22) opisuje jedan operativni scenario troškova COt. Neka CO={COt, t=0,1,...,T} oznaĉava scenario troškova COt, gde je COt odreĊen jednaĉinom (4.22). Slika 4.2 prikazuje primer simulacija (s = 1,2,..,S) scenarija za jediniĉne proizvodne troškove korišćenjem jednaĉine ...
... pristup nepredviĊenih sluĉajeva (scenarija) da bi se zaštitili od neţeljenih posledica, meĊutim ovakav pristup moţe biti neodgovarajući za zaštitu od neţeljenih posledica povezanih sa savremenim izazovima ili moţe uzeti u obzir toliko velike vrednosti scenarija da realizacija odluka postaje ...
... regresije podeljena sa brzinom povratka srednjoj vrednosti. Neka P={Pt, t=0,1,…,T} oznaĉava scenario promene cena u kom je Pt trenutna cena koja je odreĊena jednaĉinom (4.17). Slika 4.1 predstavlja jedan scenario promene cene metala (na primer, olova) simulirane jednaĉinom (4.17). 1000 1500 2000 ...Svetlana M. Štrbac-Savić. "Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-10)
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Истраживањe могућности коришћења нискотемпературних извора топлоте за одрживи развој енергетике градова
Miodrag M. Grujić (2014-06-04)Одрживост је континуиран процес балансирања између животне средине, економске исоцијалне димензије, који се односи на системска побољшања животног окружења.Енергија се налази међу покретачима одрживог развоја везано за потребу за повећањесоцијалног благостања, његову кључну улогу у економском развоју и утицај на животнусредину. Урбане зоне, као центри потреба за енергијом и емисија угљеника, пружајузначајне могућности за промоцију одрживости енергетског система заједнице.Планирање нових енергетских капацитета, у складу са принципима одрживог развоја,обухвата спровођење политике повећања енергетске ефикасности и увођења обновљивихизвора енергије. Дисертација ставља ...одрживи развој, даљинско грејање, модел, сценарио, вишекритеријумскаанализа, нискотемпературни извори, ELECTRE, Београд... доминантна опција. У реалном сценарију очигледно је доминантна Опција 2. Oптимистичан сценарио Аналогно реалном сценарију, примена методе ELECTRE за оптимистичан сценарио такође почиње од табеле 40. Табела 40. Примена методе ELECTRE за оптимистичан сценарио Критеријум Инвести- циони ...
... оптимистичном сценарију ова студија процењује да ће годишња стопа раста БДП-а износити 4% до 2015.г, а 5% од 2015. до 2020.г. Овај тренд би могао бити настављен или чак повећан до 2030.г. Осим наведена два крајња сценарија, студија наводи још два сценарија, просоцијални и неоптимистични сценарио. С обзиром ...
... агрегатне доминације (MAD) за оптимистичан сценарио 0 0 0 0 0 0 1 0 0 У оптимистичном сценарију очигледно је да је доминантна Опција 3. Песимистичан (BAU) сценарио У овом делу приказана је примена методе ELECTRE за песимистичан сценарио. Примена ове методе почиње од табеле 49. ...Miodrag M. Grujić. "Истраживањe могућности коришћења нискотемпературних извора топлоте за одрживи развој енергетике градова" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-06-04)