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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
10/02/2015 |
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Data da última atualização: |
24/02/2015 |
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Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
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Autoria: |
FREUA, M. C.; BARIONI, L. G.; VILAMIU, R. G. d'A.; DIAS, F. R. T. |
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Afiliação: |
MATEUS CASTELANI FREUA, USP; LUIS GUSTAVO BARIONI, CNPTIA; RAPHAEL GUSTAVO D’ALMEIDA VILAMIU, Cefet-RJ; FERNANDO RODRIGUES TEIXEIRA DIAS, CPAP. |
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Título: |
A comparison between three different approaches to omplement a system dynamic model: an assessment by a multidisciplinary team. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Campinas: Embrapa Informática Agropecuária, 2014. |
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Páginas: |
19 p. |
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Série: |
(Embrapa Informática Agropecuária. Boletim de pesquisa e desenvolvimento, 36). |
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ISSN: |
1677-9266 |
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Idioma: |
Inglês |
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Conteúdo: |
In the last few decades, application of system dynamics models (SDM) has disseminated through the agricultural sciences. Modeling groups are now much more multidisciplinary once the models currently developed are applied to larger frameworks. The literature has been inconclusive with regard to empirical evidence of the trade-offs between different paradigms to implement SDMs. In order to gain insight on the advantages and disadvantages between the paradigms we simulated a working group environment with seven researchers coming from various educational backgrounds where they had to implement a process-based SDM and fill in a questionnaire scoring characteristics of the paradigms and implementation process. The participants were divided into three groups according to their expertise: NAA, formed by procedural programming experts that performed the exercise in MATLAB®; OOA, formed by objected-oriented programming experts that performed the exercise in a C++ simulation framework; and GDA, the domain expert that performed the exercise in Vensim®. The approaches were ranked NAA > OOA > GDA for mathematical expressiveness, GDA > OOA > NAA for visual expressiveness, OOA > NAA = GDA for scalability and code reuse, and NAA = OOA > GDA for software integration. Based on the questionnaire and group discussions, a descriptive framework of what should be considered to identify the most appropriate implementation strategy for a SDM was developed. We suggest that the choice of what strategy to use should be driven by a combination of variables related to the model characteristics, group member's expertise and the properties intrinsic to each programming paradigm. Further research is needed to extend the analysis of how the decision on the paradigms should be related to the SDM characteristics, the time available, and the modeling group member's expertise. MenosIn the last few decades, application of system dynamics models (SDM) has disseminated through the agricultural sciences. Modeling groups are now much more multidisciplinary once the models currently developed are applied to larger frameworks. The literature has been inconclusive with regard to empirical evidence of the trade-offs between different paradigms to implement SDMs. In order to gain insight on the advantages and disadvantages between the paradigms we simulated a working group environment with seven researchers coming from various educational backgrounds where they had to implement a process-based SDM and fill in a questionnaire scoring characteristics of the paradigms and implementation process. The participants were divided into three groups according to their expertise: NAA, formed by procedural programming experts that performed the exercise in MATLAB®; OOA, formed by objected-oriented programming experts that performed the exercise in a C++ simulation framework; and GDA, the domain expert that performed the exercise in Vensim®. The approaches were ranked NAA > OOA > GDA for mathematical expressiveness, GDA > OOA > NAA for visual expressiveness, OOA > NAA = GDA for scalability and code reuse, and NAA = OOA > GDA for software integration. Based on the questionnaire and group discussions, a descriptive framework of what should be considered to identify the most appropriate implementation strategy for a SDM was developed. We suggest that the choice of what strategy... Mostrar Tudo |
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Palavras-Chave: |
Agricultural models; Modelo dinâmico; Modelos agrícolas; Objected-oriented programming; Programação orientada a objetos. |
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Thesagro: |
Modelo Matemático. |
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Thesaurus Nal: |
dynamic models; Mathematical models. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/117682/1/Livro-BolPesq36.pdf
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Marc: |
LEADER 02832nam a2200277 a 4500
001 2008307
005 2015-02-24
008 2014 bl uuuu u0uu1 u #d
022 $a1677-9266
100 1 $aFREUA, M. C.
245 $aA comparison between three different approaches to omplement a system dynamic model$ban assessment by a multidisciplinary team.$h[electronic resource]
260 $aCampinas: Embrapa Informática Agropecuária$c2014
300 $a19 p.
490 $a(Embrapa Informática Agropecuária. Boletim de pesquisa e desenvolvimento, 36).
520 $aIn the last few decades, application of system dynamics models (SDM) has disseminated through the agricultural sciences. Modeling groups are now much more multidisciplinary once the models currently developed are applied to larger frameworks. The literature has been inconclusive with regard to empirical evidence of the trade-offs between different paradigms to implement SDMs. In order to gain insight on the advantages and disadvantages between the paradigms we simulated a working group environment with seven researchers coming from various educational backgrounds where they had to implement a process-based SDM and fill in a questionnaire scoring characteristics of the paradigms and implementation process. The participants were divided into three groups according to their expertise: NAA, formed by procedural programming experts that performed the exercise in MATLAB®; OOA, formed by objected-oriented programming experts that performed the exercise in a C++ simulation framework; and GDA, the domain expert that performed the exercise in Vensim®. The approaches were ranked NAA > OOA > GDA for mathematical expressiveness, GDA > OOA > NAA for visual expressiveness, OOA > NAA = GDA for scalability and code reuse, and NAA = OOA > GDA for software integration. Based on the questionnaire and group discussions, a descriptive framework of what should be considered to identify the most appropriate implementation strategy for a SDM was developed. We suggest that the choice of what strategy to use should be driven by a combination of variables related to the model characteristics, group member's expertise and the properties intrinsic to each programming paradigm. Further research is needed to extend the analysis of how the decision on the paradigms should be related to the SDM characteristics, the time available, and the modeling group member's expertise.
650 $adynamic models
650 $aMathematical models
650 $aModelo Matemático
653 $aAgricultural models
653 $aModelo dinâmico
653 $aModelos agrícolas
653 $aObjected-oriented programming
653 $aProgramação orientada a objetos
700 1 $aBARIONI, L. G.
700 1 $aVILAMIU, R. G. d'A.
700 1 $aDIAS, F. R. T.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
12/09/2021 |
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Data da última atualização: |
07/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
BARROS, R. de A.; VITAL, C. E.; SILVA JÚNIOR, N. R.; VARGAS, M. A. S.; MONTEIRO, L. P.; FAUSTINO, V. A.; AUAD, A. M.; PEREIRA, J. F.; OLIVEIRA, E. E. de; RAMOS, H. J. O.; OLIVEIRA, M. G. de A. |
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Afiliação: |
RAFAEL DE A. BARROS, Universidade Federal de Viçosa; CAMILO E. VITAL, Universidade Federal de Viçosa; NEILIER R. SILVA JÚNIOR, Universidade Federal de Viçosa; MANUEL A. S. VARGAS, Universidade Federal de Viçosa; LUANA P. MONTEIRO, Universidade Federal de Viçosa; VERONICA A. FAUSTINO, Universidade Federal de Viçosa; ALEXANDER MACHADO AUAD, CNPGL; JORGE FERNANDO PEREIRA, CNPGL; EUGENIO E. DE OLIVEIRA, Universidade Federal de Viçosa; HUMBERTO J. O. RAMOS, Universidade Federal de Viçosa; MARIA GORETI DE A. OLIVEIRA, Universidade Federal de Viçosa. |
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Título: |
Differential defense responses of tropical grasses to Mahanarva spectabilis (Hemiptera: Cercopidae) infestation. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Anais da Academia Brasileira de Ciências, v. 93, n. 3, e20191456, 2021. |
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DOI: |
https://doi.org/10.1590/0001-3765202120191456 |
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Idioma: |
Inglês |
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Conteúdo: |
The spittlebugs Mahanarva spectabilis economically challenges cattle production of neotropical regions, due to its voracious feeding on tropical grasses. Here, we evaluated biochemical responses of the interaction between M. spectabilis and the widely cultivated tropical grasses Brachiaria spp. (i.e., brizantha and decumbens) and elephant grasses (cvs. Roxo de Botucatu and Pioneiro), regarding lipoxygenases, protease inhibitors, phytohormones, and proteolytic activities in the midgut of M. spectabilis. The M. spectabilis-infested grasses increased lipoxygenases activity, except for cv. Pioneiro. The levels of the phytohormones jasmonic and abscisic acids were similarly low in all genotypes and increased under herbivory. Furthermore, salicylic acid concentration was constitutively higher in Brachiaria sp., increasing only in spittlebug-infested B. decumbens. M. spectabilis infestations did not induce increases of protease inhibitors in any forage grass type. The trypsin activity remained unaltered, and the total proteolytic activity increased only in B decumbens-fed insects. Our findings revealed that most forage grasses exposed to spittlebugs activate the lipoxygenases pathway, resulting in increased abscisic and jasmonic acids. However, greater amounts of these hormones do not induce protease inhibitory activity in response to spittlebug attack. This knowledge certainly helps to guide future projects aiming at reducing the impact of spittlebugs on forage production. |
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Thesagro: |
Cigarrinha das Pastagens; Hormônio; Inseto; Intestino; Pastagem; Protease. |
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Thesaurus NAL: |
Hormones; Insects; Midgut. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226029/1/Differential-defense.pdf
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Marc: |
LEADER 02557naa a2200361 a 4500
001 2134243
005 2021-12-07
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/0001-3765202120191456$2DOI
100 1 $aBARROS, R. de A.
245 $aDifferential defense responses of tropical grasses to Mahanarva spectabilis (Hemiptera$bCercopidae) infestation.$h[electronic resource]
260 $c2021
520 $aThe spittlebugs Mahanarva spectabilis economically challenges cattle production of neotropical regions, due to its voracious feeding on tropical grasses. Here, we evaluated biochemical responses of the interaction between M. spectabilis and the widely cultivated tropical grasses Brachiaria spp. (i.e., brizantha and decumbens) and elephant grasses (cvs. Roxo de Botucatu and Pioneiro), regarding lipoxygenases, protease inhibitors, phytohormones, and proteolytic activities in the midgut of M. spectabilis. The M. spectabilis-infested grasses increased lipoxygenases activity, except for cv. Pioneiro. The levels of the phytohormones jasmonic and abscisic acids were similarly low in all genotypes and increased under herbivory. Furthermore, salicylic acid concentration was constitutively higher in Brachiaria sp., increasing only in spittlebug-infested B. decumbens. M. spectabilis infestations did not induce increases of protease inhibitors in any forage grass type. The trypsin activity remained unaltered, and the total proteolytic activity increased only in B decumbens-fed insects. Our findings revealed that most forage grasses exposed to spittlebugs activate the lipoxygenases pathway, resulting in increased abscisic and jasmonic acids. However, greater amounts of these hormones do not induce protease inhibitory activity in response to spittlebug attack. This knowledge certainly helps to guide future projects aiming at reducing the impact of spittlebugs on forage production.
650 $aHormones
650 $aInsects
650 $aMidgut
650 $aCigarrinha das Pastagens
650 $aHormônio
650 $aInseto
650 $aIntestino
650 $aPastagem
650 $aProtease
700 1 $aVITAL, C. E.
700 1 $aSILVA JÚNIOR, N. R.
700 1 $aVARGAS, M. A. S.
700 1 $aMONTEIRO, L. P.
700 1 $aFAUSTINO, V. A.
700 1 $aAUAD, A. M.
700 1 $aPEREIRA, J. F.
700 1 $aOLIVEIRA, E. E. de
700 1 $aRAMOS, H. J. O.
700 1 $aOLIVEIRA, M. G. de A.
773 $tAnais da Academia Brasileira de Ciências$gv. 93, n. 3, e20191456, 2021.
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