The Experts below are selected from a list of 60 Experts worldwide ranked by ideXlab platform
Fernando S - One of the best experts on this subject based on the ideXlab platform.
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ICWE Workshops - Modernization of legacy web applications into rich internet applications
Current Trends in Web Engineering, 2012Co-Authors: Roberto Rodríguez-echeverría, Fernando S, José María Conejero, Pedro J. Clemente, Juan Carlos Preciado, Nchez-figueroaAbstract:In the last years one of the main concerns of the software industry has been to reengineer their legacy Web Applications (WAs) to take advantage of the benefits introduced by Rich Internet Applications (RIAs), such as enhanced user interaction and network bandwith optimization. However, those reengineering processes have been traditionally performed in an ad-hoc manner, resulting in very expensive and error-prone projects. This situation is partly motivated by the fact that most of the legacy WAs were developed before Model-Driven Development (MDD) approaches became mainstream. Then maintenance activities of those legacy WAs have not been yet incorporated to a MDA development lifecycle. OMG Architecture Driven Modernization (ADM) advocates for applying MDD principles to formalize and standardize those reengineering processes with Modernization purposes. In this paper we outline an ADM-based WA-to-RIA Modernization process, highlighting the special characteristics of this Modernization Scenario.
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Modernization of legacy web applications into rich internet applications
International Conference on Web Engineering, 2011Co-Authors: Roberto Rodriguezecheverria, José María Conejero, Pedro J. Clemente, Juan Carlos Preciado, Fernando SAbstract:In the last years one of the main concerns of the software industry has been to reengineer their legacy Web Applications (WAs) to take advantage of the benefits introduced by Rich Internet Applications (RIAs), such as enhanced user interaction and network bandwith optimization. However, those reengineering processes have been traditionally performed in an ad-hoc manner, resulting in very expensive and error-prone projects. This situation is partly motivated by the fact that most of the legacy WAs were developed before Model-Driven Development (MDD) approaches became mainstream. Then maintenance activities of those legacy WAs have not been yet incorporated to a MDA development lifecycle. OMG Architecture Driven Modernization (ADM) advocates for applying MDD principles to formalize and standardize those reengineering processes with Modernization purposes. In this paper we outline an ADM-based WA-to-RIA Modernization process, highlighting the special characteristics of this Modernization Scenario.
D. A. Streletskiy - One of the best experts on this subject based on the ideXlab platform.
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Economic assessment of the impact of permafrost degradation induced by climate change the road infrastructure resilience in the Russian Arctic
2019Co-Authors: B. N. Porfiriev, D. A. Streletskiy, Б Н Порфирьев, D. O. Elisseev, Д О Елисеев, Д А СтрелецкийAbstract:This paper evaluates three model Scenarios of road infrastructure resilience variation resulting from the climate change-induced degradation and thawing of permafrost in nine regions of the Russian Arctic. To provide economic assessment of climate change implications for development of the regions above by mid-21st century model estimates of the permafrost a physic-geographic basis for conditions have been used. These estimates are obtained using the IPCC six key Scenarios of climate change including the most negative RCP 8.5 Scenario considered as the most similar to Russian Arctic environments. The upgraded data from the Transportation Strategy of the Russian Federation served a basis for forecasting the road infrastructure development by 2035. It is argued that the “business as usual” (conservative) Scenario of the road infrastructure development in the explored nine regions of the Russian Arctic from 2020 to 2050 implies annual investments of 14 billion rubles to maintain resilience and reduce the risks of destruction of the infrastructure following permafrost thawing and degradation. The investments for the moderate and Modernization Scenarios will exceed 21 billion and 28 billion rubles, respectively, with the maximal numbers expected in the Yakutia, Magadan, and Chukotka regions. Implementation of the Modernization Scenario assumes reconsideration of the existing standards, technologies, and the road infrastructure and capital construction economics as a whole. Priority areas include innovation standards and construction technologies development as well as improvement of the methodology and procedures of respective investments assessments considered in this paper.
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Economic Assessment of Permafrost Degradation Effects on Road Infrastructure Sustainability under Climate Change in the Russian Arctic
Herald of the Russian Academy of Sciences, 2019Co-Authors: B. N. Porfiriev, D. O. Eliseev, D. A. StreletskiyAbstract:Three model Scenarios of changes in road infrastructure sustainability under permafrost thawing and degradation due to global climate change in nine Russian Arctic regions are considered. Until the current mid-century, economic assessment of the aftermath of climate change in these regions was physicogeographically based on six model climate assessments of cryogenic conditions, reflecting the most negative (Scenario RCP8.5) option of the IPCC global climate change forecasts, which best fits the conditions of the Russian Arctic. The data of Russia’s Transport Strategy until 2035, updated by the authors, serve as the basis for predicting road infrastructure development. An inertial (conservative) Scenario of road infrastructure development in 2020–2050 shows that capital costs to maintain road infrastructure sustainability and reduce damage risks under permafrost thawing and degradation will average at least ₽14 bln a year and will exceed ₽21 bln and ₽28 bln, respectively, under the moderate and Modernization Scenarios. The maximum indicators will be relevant for the Republic of Sakha (Yakutia), Magadan oblast, and the Chukotka Autonomous Okrug. The implementation of the Modernization Scenario will require revision of the existing standards, technologies, and entire economy of the road infrastructure and capital construction favoring the development of innovative standards and construction technologies, as well as the improvement of the proposed methodology and methods of cost estimation for these purposes.
B. N. Porfiriev - One of the best experts on this subject based on the ideXlab platform.
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Economic assessment of the impact of permafrost degradation induced by climate change the road infrastructure resilience in the Russian Arctic
2019Co-Authors: B. N. Porfiriev, D. A. Streletskiy, Б Н Порфирьев, D. O. Elisseev, Д О Елисеев, Д А СтрелецкийAbstract:This paper evaluates three model Scenarios of road infrastructure resilience variation resulting from the climate change-induced degradation and thawing of permafrost in nine regions of the Russian Arctic. To provide economic assessment of climate change implications for development of the regions above by mid-21st century model estimates of the permafrost a physic-geographic basis for conditions have been used. These estimates are obtained using the IPCC six key Scenarios of climate change including the most negative RCP 8.5 Scenario considered as the most similar to Russian Arctic environments. The upgraded data from the Transportation Strategy of the Russian Federation served a basis for forecasting the road infrastructure development by 2035. It is argued that the “business as usual” (conservative) Scenario of the road infrastructure development in the explored nine regions of the Russian Arctic from 2020 to 2050 implies annual investments of 14 billion rubles to maintain resilience and reduce the risks of destruction of the infrastructure following permafrost thawing and degradation. The investments for the moderate and Modernization Scenarios will exceed 21 billion and 28 billion rubles, respectively, with the maximal numbers expected in the Yakutia, Magadan, and Chukotka regions. Implementation of the Modernization Scenario assumes reconsideration of the existing standards, technologies, and the road infrastructure and capital construction economics as a whole. Priority areas include innovation standards and construction technologies development as well as improvement of the methodology and procedures of respective investments assessments considered in this paper.
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Economic Assessment of Permafrost Degradation Effects on Road Infrastructure Sustainability under Climate Change in the Russian Arctic
Herald of the Russian Academy of Sciences, 2019Co-Authors: B. N. Porfiriev, D. O. Eliseev, D. A. StreletskiyAbstract:Three model Scenarios of changes in road infrastructure sustainability under permafrost thawing and degradation due to global climate change in nine Russian Arctic regions are considered. Until the current mid-century, economic assessment of the aftermath of climate change in these regions was physicogeographically based on six model climate assessments of cryogenic conditions, reflecting the most negative (Scenario RCP8.5) option of the IPCC global climate change forecasts, which best fits the conditions of the Russian Arctic. The data of Russia’s Transport Strategy until 2035, updated by the authors, serve as the basis for predicting road infrastructure development. An inertial (conservative) Scenario of road infrastructure development in 2020–2050 shows that capital costs to maintain road infrastructure sustainability and reduce damage risks under permafrost thawing and degradation will average at least ₽14 bln a year and will exceed ₽21 bln and ₽28 bln, respectively, under the moderate and Modernization Scenarios. The maximum indicators will be relevant for the Republic of Sakha (Yakutia), Magadan oblast, and the Chukotka Autonomous Okrug. The implementation of the Modernization Scenario will require revision of the existing standards, technologies, and entire economy of the road infrastructure and capital construction favoring the development of innovative standards and construction technologies, as well as the improvement of the proposed methodology and methods of cost estimation for these purposes.
Omar Masera - One of the best experts on this subject based on the ideXlab platform.
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Solid biofuels in Mexico: a sustainable alternative to satisfy the increasing demand for heat and power
Clean Technologies and Environmental Policy, 2018Co-Authors: Raúl Tauro, Montserrat Serrano-medrano, Omar MaseraAbstract:Bioenergy is the largest renewable energy source in Mexico with an estimated 4–9% of total current energy demand. There are large uncertainties and contrasting estimates regarding its current extent and end-uses, particularly with traditional uses. However, a large potential exists to improve the efficiency of existing uses and, at the same time, to diversify the use of SBF in the industrial and power sectors. This paper aims at: providing the first updated and comprehensive estimate of current SBF demand in Mexico including traditional and modern uses; providing a consistent estimate of actual SBF supply potential; estimating the total potential substitution of fossil fuels that could be achieved by SBF considering an integrated “Modernization Scenario”; and finally describing the main barriers limiting SBF to fully triggering its potential. Results show that current SBF consumption reached 481 PJ/yr in 2015; SBF supply potential reaches 3622 PJ/yr, out of which 883 PJ/yr could be used to substitute up to 29% of current demand of FF, mitigating 66 MtCO_2e/yr of greenhouse gas (GHG) emissions, or near 88 MtCO_2e/yr if mitigation from traditional uses is added.
V Kotler - One of the best experts on this subject based on the ideXlab platform.
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refurbishment priorities at the russian coal fired power sector for cleaner energy production case studies
Energy Policy, 2006Co-Authors: Panagiotis Grammelis, Nikolaos Koukouzas, G Skodras, E Kakaras, A Tumanovsky, V KotlerAbstract:Abstract The paper aims to present the current status of the coal-fired power sector in Russia, the prospects for renovation activities based on Clean Coal Technologies (CCT) and two case studies on potential refurbishment projects. Data were collected for 180 thermoelectric units with capacity higher than 100 MWe and the renovation needs of the power sector, among the retrofitting, repowering and reconstruction options, were estimated through a multi-criteria analysis. The most attractive system to renovate a power plant between the Supercritical Combustion (SC) and the Fluidized Bed Combustion (FBC) technologies was evaluated. The application of each of the aforementioned technologies at the Kashirskaya and Shaturskaya power plants was studied and their replication potential in the Russian coal-fired power plant park was examined. Nowadays, the installed capacity of coal-fired power plants in the Russian Federation is 29.3 GWe, while they account for about 19% of the total electricity generation in the area. The low efficiency and especially the advanced age are the determinant factors for renovation applications at the Russian units. Even in the more conservative Modernization Scenario, over 30% of the thermoelectric units have to be repowered or reconstructed. Concrete proposals about the profitable and reliable operation of two Russian thermoelectric units with minimized environmental effects were elaborated. A new unit of 315 MWe with supercritical steam parameters and reburning for NOx abatement is envisaged to upgrade Unit 1 of Kashirskaya power station, while new Circulating Fluidized Bed (CFB) boilers of the same steam generation is the most promising renovation option for the boilers of Unit 1 in Shaturskaya power station.