6 results on '"dynamic simulation"'
Search Results
2. Does bank credit to the private sector promote low-carbon development in Brazil? An extended STIRPAT analysis using dynamic ARDL simulations.
- Author
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Nwani, Chinazaekpere and Omoke, Philip C.
- Subjects
BANK loans ,PRIVATE sector ,DYNAMIC simulation ,PRIVATE banks ,ECONOMIC expansion ,HIGH strength steel - Abstract
In support of the global efforts to tackle climate change, policy makers in the past decades have been actively involved, exploring possible options for ensuring low-carbon pattern of development. This study contributes to this important stream of policy discussion by using a newly developed econometric technique, dynamic ARDL simulations, to estimate and simulate the impact of bank credit to the private sector on aggregate carbon emissions and carbon emission intensity in Brazil over the period 1971–2014. The examined empirical model is based on a framework that incorporates the impact of population, economic growth, fossil energy intensity of consumption, and economic globalization. The analysis produced interesting results. First, the estimates show that economic growth and fossil energy intensity of consumption have significant long-run increasing impact on CO
2 emissions in Brazil. Second, bank credit to the private sector has significant short-run and long-run reducing effects on aggregate CO2 emission and carbon emission intensity in the economy. Overall, the results reflect the tendency of the economy to become less carbon-intensive as bank credit supply to the private sector increases. [ABSTRACT FROM AUTHOR]- Published
- 2020
- Full Text
- View/download PDF
3. Industrial double rig trawl fisheries in the southeastern and southern Brazil: characterization of the fleet, nets and trawl simulation.
- Author
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Queirolo, Dante, Wahrlich, Roberto, Molina, Rodrigo, Munari-Faccin, José Ricardo, and Ricardo Pezzuto, Paulo
- Subjects
- *
TRAWLING , *PANDALUS borealis , *GIANT stargazer , *HYDRODYNAMICS , *TONNAGE - Abstract
The industrial double rig trawl fisheries are an important extractive activity in the southeastern and southern Brazil where near 300 vessels participate, targeting their catch to the sea-bob shrimp, pink shrimp and demersal fishes, such as flatfishes and monkfish. In order to advance in the fishery management, a general characterization of the trawl fleet operating in the area was done, identifying the patterns of nets used and the hydrodynamic performance of the nets observed by means of dynamic simulation. 194 vessels of Santa Catarina State and 130 vessels from other areas, mainly built in steel and wood, were identified. The largest size, tonnage, and capacity, correspond to those vessels working upon demersal and oceanic fishes. On the other hand, the most abundant vessels were those working upon pink shrimp (230 vessels). Regarding the nets, different patterns were identified according to the catch of target species; the smaller nets were used to catch shrimps (sea-bob and pink shrimp) and the largest were used to catch fishes. Mixed nets were also identified, characterized by similar dimensions of nets to catch fish but with mesh sizes of shrimp nets. From the simulations, different performance functions were adjusted according to each founded pattern; these functions will serve to calculate net’s spread, their shape relationship, and the hydrodynamic drag forces. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
4. Bamboo bio-concrete as an alternative for buildings' climate change mitigation and adaptation.
- Author
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Rosse Caldas, Lucas, Bernstad Saraiva, Anna, Andreola, Vanessa Maria, and Dias Toledo Filho, Romildo
- Subjects
- *
BAMBOO , *HEAT , *BUILDING envelopes , *CLIMATE change , *CLIMATE change mitigation - Abstract
• A dynamic climate change impact evaluation framework is proposed. • Bamboo bio-concrete is a good climate change mitigation and adaptation alternative. • Bamboo bio-concrete presents a reliable carbon-thermal energy solution. • Bamboo bio-concrete provides a promising alternative for developing countries. This study aims to present a framework to quantify the climate change impact during the buildings' life cycle. The proposed framework is tested on a bamboo bio-concrete (BBC) building and compared with conventional constructive systems, in a Brazilian housing project considering six cities using Dynamic Life Cycle Assessment (DLCA) and thermal energy simulation. The increase of BBC in the building envelope, from 10 cm to 20 cm, leads to the improvement of carbon stock and reduces operational carbon. The BBC can be considered a potential alternative for climate change mitigation and adaptation and developed where bamboo is an available source. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
5. Industrial double rig trawl fisheries in the southeastern and southern Brazil: characterization of the fleet, nets and trawl simulation
- Author
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José Ricardo Munari-Faccin, Dante Queirolo, Roberto Wahrlich, Rodrigo Molina, and Paulo Ricardo Pezzuto
- Subjects
0106 biological sciences ,demersal fishes ,010604 marine biology & hydrobiology ,Aquatic Science ,Biology ,Oceanography ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,pink shrimp ,Demersal zone ,Shrimp ,Tonnage ,Fishery ,Flatfish ,%22">Fish ,Shape relationship ,sea-bob shrimp ,dynamic simulation ,Fisheries management ,Brazil ,double rig trawl - Abstract
The industrial double rig trawl fisheries are an important extractive activity in the southeastern and southern Brazil where near 300 vessels participate, targeting their catch to the sea-bob shrimp, pink shrimp and demersal fishes, such as flatfishes and monkfish. In order to advance in the fishery management, a general characterization of the trawl fleet operating in the area was done, identifying the patterns of nets used and the hydrodynamic performance of the nets observed by means of dynamic simulation. 194 vessels of Santa Catarina State and 130 vessels from other areas, mainly built in steel and wood, were identified. The largest size, tonnage, and capacity, correspond to those vessels working upon demersal and oceanic fishes. On the other hand, the most abundant vessels were those working upon pink shrimp (230 vessels). Regarding the nets, different patterns were identified according to the catch of target species; the smaller nets were used to catch shrimps (sea-bob and pink shrimp) and the largest were used to catch fishes. Mixed nets were also identified, characterized by similar dimensions of nets to catch fish but with mesh sizes of shrimp nets. From the simulations, different performance functions were adjusted according to each founded pattern; these functions will serve to calculate net’s spread, their shape relationship, and the hydrodynamic drag forces.
- Published
- 2016
6. Abordagem termodinâmica para avaliação da controlabilidade em processos integrados (Redes de trocadores de calor)
- Author
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De León Herrera, Carmen Inés, Ravagnani, Mauro Antonio da Silva Sá, Andrade, Cid Marcos Gonçalves, Conceição, Wagner André dos Santos, Costa, Caliane Bastos Borba, Universidade Estadual de Maringá, Centro de Tecnologia, Departamento de Engenharia Química, Programa de Pós-Graduação em Engenharia Química, Mauro Antonio da Silva Sá Ravagnani, Cid Marcos Gonçalves Andrade - UEM, Wagner André dos Santos Conceição - Unicentro, and Caliane Bastos Borba Costa - UEM
- Subjects
Controle de processos químicos ,Controllability ,Dinâmica de processos químicos - Simulação ,Brasil ,Resiliência ,Dinâmica de processos químicos ,Controlabilidade ,660.28427 ,Thermodynamic ,Termodinâmica ,Redes de trocadores de calor ,Engenharias ,Processos químicos - Controle - Resiliência ,Simulação, Controle de processos químicos ,Brazil ,Dynamic simulation ,Engenharia Química ,Heat exchanger networks ,Processos químicos - Controle - Controlabilidade - Abstract
Orientador: Prof. Dr. Mauro Antonio da Silva Sá Ravagnani Coorientador: Prof. Dr. Cid Marcos Gonçalves Andrade Dissertação (mestrado em Engenharia Química) - Universidade Estadual de Maringá, 2016 Atualmente, a interação do projeto do processo com o projeto dos sistemas de controle passou a ser foco de desenvolvimento e pesquisa, devido ao fato de que nem sempre o melhor projeto do processo apresenta o melhor desempenho dinâmico, devido as implicações na controlabilidade da planta. Note-se que um projeto mais integrado (em termos de energia e de massa) leva a um sistema com menores gradientes por ser mais próximo da reversibilidade. Desta forma uma pre-análise termodinâmica, do posto de vista dissipativo no estado estacionário, pode auxiliar na obtenção de uma boa estimativa de um projeto ótimo que não comprometa a controlabilidade. A presente dissertação traz uma abordagem simultânea dos objetivos econômicos e de controlabilidade nas fases iniciais do projeto do processo. Um estudo sobre a controlabilidade e a resiliência de uma rede de trocadores de calor foi realizada, fazendo-se uso da matriz de ganho relativo (RGA) e do custo de perturbação (DC), tendo-se obtido as configurações e o controle das redes propostas e seu desempenho. Estes resultados são comparados com a abordagem termodinâmica proposta e um tempo de resposta foi alcançado, como uma medida da capacidade de controle (controlabilidade) do sistema do processo aplicado a uma rede de trocadores de calor (RTC), que mostra a relação entre a energia, a produção de entropia e a controlabilidade do processo. Esta análise mostrou coerência com os resultados da literatura. Adicionalmente a rede é sintetizada e simulações dinâmicas são desenvolvidas, que mostram como a resposta dinâmica da rede de trocadores de calor integrada não apresenta uma boa resposta a perturbações, e o efeito da adição de uma corrente de desvio na unidade mais próxima da temperatura de saída controlada Nowadays, the interaction between process design and control has become the focus of research and development, because not always the best process design features the best dynamic performance, with implications in the controllability of the plant. Can be noticed that a more integrated design (in terms of energy and mass) leads to a system with smaller gradients for being closest to reversibility. Thus a thermodynamic pre-analysis from the dissipative point of view at steady state, can assist in obtaining a good estimative of an optimal design which will not compromise controllability. The present thesis proposes a simultaneous approach for the economic goals and controllability in the early stages of the process design. The controllability and resiliency are first analyzed using a known heat exchanger network and the Relative gain array (RGA) and disturbance cost (DC), obtaining the control configurations of the proposed networks and their control performance. This results are compared with the proposed thermodynamic approach, where a response time is achieved, as a measure of controllability of the process system applied to a heat exchanger network (HEN), showing the relation between energy and entropy production and process controllability. This analysis showed consistency with the literature results. In addition, the network is synthesized and dynamic simulations are developed, showing that the dynamic response of the integrated heat exchanger network presents a poor response to disturbances, and the effect of adding a bypass stream in the unit closer to the outlet controlled temperature
- Published
- 2016
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