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3 referências encontradas buscando em 15 dentre 15 sites.
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Tipo da ReferênciaJournal Article
Identificador8JMKD3MGP3W34P/3MA6MP2
Repositóriosid.inpe.br/mtc-m21b/2016/08.19.18.00   (acesso restrito)
Metadadossid.inpe.br/mtc-m21b/2016/08.19.18.00.27
Sitemtc-m21b.sid.inpe.br
DOI10.1016/j.ymssp.2016.02.026
ISSN0888-3270
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Chave de CitaçãoMainenti-LopesSouzSous:2016:CoStCo
Autor1 Mainenti-Lopes, I.
2 Souza, Luiz Carlos Gadelha de
3 Sousa, Fabiano Luis de
Identificador de Curriculo1
2 8JMKD3MGP5W/3C9JHN3
3 8JMKD3MGP5W/3C9JH3H
Grupo1
2 DMC-ETE-INPE-MCTI-GOV-BR
3 DSE-ETE-INPE-MCTI-GOV-BR
Afiliação1 Universidade de Brasília (UnB)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1 rogimainemti@gmail.com
2 gadelha@dem.inpe.br
3 fabiano.sousa@inpe.br
TítuloA comparative study between control strategies for a solar sailcraft in an Earth–Mars transfer
RevistaMechanical Systems and Signal Processing
Ano2016
Volume79
MêsOct.
Palavras-ChaveSolar sailcraft, Trajectory optimization, Evolutionary algorithm, Generalized extremal optimization.
ResumoThe goal of this work was a comparative study of solar sail trajectory optimization using different control strategies. Solar sailcraft is propulsion system with great interest in space engineering, since it uses solar radiation to propulsion. So there is no need for propellant to be used, thus it can remains active throughout the entire transfer maneuver. This type of propulsion system opens the possibility to reduce the cost of exploration missions in the solar system. In its simplest configuration, a Flat Solar Sail (FSS) consists of a large and thin structure generally composed by a film fixed to flexible rods. The performance of these vehicles depends largely on the sails attitude relative to the Sun. Using a FSS as propulsion, an"Earth-Mars transfer optimization problem was tackled by the algorithms GEO(real1) and GEO(real2) (Generalized Extremal Optimization with real codification). Those algorithms are Evolutionary Algorithms (AE) based on the theory of Self-Organized Criticality. They were used to optimize the FSS attitude angle so it could reach Mars orbit in minimum time. It was considered that the FSS could perform up to ten attitude maneuvers during orbital transfer. Moreover, the time between maneuvers can be different. So, the algorithms had to optimize an objective function with 20 design variables. The results obtained in this work were compared with previously results that considered constant values of time between maneuvers.
Páginas289-296
Idiomaen
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
AreaETES
Nota SecundáriaA1_ENGENHARIAS_III A1_ENGENHARIAS_I A2_ENGENHARIAS_IV B1_MATERIAIS B1_ENGENHARIAS_II B2_ASTRONOMIA_/_FÍSICA
Tamanho913 KiB
Número de Arquivos1
Arquivo Alvomainenti_a comparative.pdf
Última Atualização2016:08.19.18.01.07 sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 simone
Última Atualização dos Metadados2018:06.04.02.41.03 sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 administrator {D 2016}
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Tipo do ConteudoExternal Contribution
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Tipo de Versãopublisher
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2018-06-04 02:41:03 :: administrator -> simone :: 2016
Campos Vaziosalternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination e-mailaddress format isbn label lineage mark nextedition nexthigherunit notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
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Tipo da ReferênciaJournal Article
Identificador8JMKD3MGP3W34P/3MREA7E
Repositóriosid.inpe.br/mtc-m21b/2016/11.21.17.44   (acesso restrito)
Metadadossid.inpe.br/mtc-m21b/2016/11.21.17.44.05
Sitemtc-m21b.sid.inpe.br
DOI10.1515/peps-2016-0012
ISSN1079-2457
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Chave de CitaçãoMirandaPeroGled:2016:EvCiWa
Autor1 Miranda, L. C. M.
2 Perondi, Leonel Fernando
3 Gleditsch, K. s.
Identificador de Curriculo1
2 8JMKD3MGP5W/3C9JHLM
Grupo1
2 DMC-ETE-INPE-MCTI-GOV-BR
Afiliação1 University of Essex
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 University of Essex
Endereço de e-Mail do Autor1
2 leonel.perondi@inpe.br
TítuloThe evolution of civil war severity, 1816-2005
RevistaPeace Economics, Peace Science and Public Policy
Ano2016
Volume22
Número3
MêsAug.
Palavras-ChaveCivil war, Frequency-severity distributions, Severity.
ResumoPrevious analyses of civil war trends tend to be informal and consider only post 1945 data. We examine data on civil wars over the period 1816-2005, using new methods for evolutionary growth processes. We find a number of new patterns and trends in civil war that have received little attention in previous research, including a structural break in frequency of conflict with decolonialization, as well as evidence of periodicity in civil conflict. We develop new measures of civil war intensity and impact, and find that conflicts have been generally more severe in the 20th than in the 19th century. We also find that the frequency-severity distribution of civil war does not appear to follow a power-law distribution, unlike data on many other types of conflict. Although structural trends suggest an increase in future civil wars, we discuss possible limiting factors that might prevent this in light of the recent observed decline in civil wars after the Cold War.
Páginas247-276
Idiomaen
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
DivulgaçãoSCOPUS
AreaETES
Tamanho670 KiB
Número de Arquivos1
Última Atualização2017:07.21.16.38.01 sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 simone
Última Atualização dos Metadados2018:06.04.02.41.20 sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 administrator {D 2016}
Estágio do Documentoconcluido
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Espelhourlib.net/www/2011/03.29.20.55
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Grupo de Usuáriossimone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Transferível1
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
Tipo do ConteudoExternal Contribution
Estágio do Documentonot transferred
Tipo de Versãopublisher
Permissão de Leituradeny from all and allow from 150.163
Conteúdo da Pasta sourcenão têm arquivos
Conteúdo da Pasta agreement
agreement.html 21/11/2016 15:44 1.0 KiB 
Histórico2016-11-21 17:44:20 :: simone -> administrator :: 2016
2017-01-09 13:59:35 :: administrator -> simone :: 2016
2017-07-21 16:38:01 :: simone -> administrator :: 2016
2018-06-04 02:41:20 :: administrator -> simone :: 2016
Campos Vaziosalternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark nextedition nexthigherunit notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder secondarydate secondarykey secondarymark session shorttitle sponsor subject targetfile tertiarymark tertiarytype url
Data de Acesso19 out. 2020
atualizar 
similares 
Tipo da ReferênciaJournal Article
Identificador8JMKD3MGP3W34P/3MA6ME5
Repositóriosid.inpe.br/mtc-m21b/2016/08.19.17.56   (acesso restrito)
Metadadossid.inpe.br/mtc-m21b/2016/08.19.17.56.16
Sitemtc-m21b.sid.inpe.br
DOI10.1016/j.ymssp.2016.02.028
Rótuloself-archiving-INPE-MCTI-GOV-BR
ISSN0888-3270
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Chave de CitaçãoSouzaBigo:2016:AdMeWe
Autor1 Souza, Luiz Carlos Gadelha de
2 Bigot, Pierre Gaston
Identificador de Curriculo1 8JMKD3MGP5W/3C9JHN3
Grupo1 DMC-ETE-INPE-MCTI-GOV-BR
2 CMC-ETES-SPG-INPE-MCTI-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1 gadelha@dem.inpe.br
2 pierre.bigot.01@gmail.com
TítuloAn adaptive method with weight matrix as a function of the state to design the rotatory flexible system control law
RevistaMechanical Systems and Signal Processing
Ano2016
Volume79
MêsOct.
Palavras-ChaveSDRE, Dynamic of flexible beam, Nonlinear control law.
ResumoOne of the most well-known techniques of optimal control is the theory of Linear Quadratic Regulator (LQR). This method was originally applied only to linear systems but has been generalized for non-linear systems: the State Dependent Riccati Equation (SDRE) technique. One of the advantages of SDRE is that the weight matrix selection is the same as in LQR. The difference is that weights are not necessarily constant: they can be state dependent. Then, it gives an additional flexibility to design the control law. Many are applications of SDRE for simulation or real time control but generally SDRE weights are chosen constant so no advantage of this flexibility is taken. This work serves to show through simulation that state dependent weights matrix can improve SDRE control performance. The system is a non-linear flexible rotatory beam. In a brief first part SDRE theory will be explained and the non-linear model detailed. Then, influence of SDRE weight matrix associated with the state Q will be analyzed to get some insight in order to assume a state dependent law. Finally, these laws are tested and compared to constant weight matrix Q. Based on simulation results; one concludes showing the benefits of using an adaptive weight Q rather than a constant one.
Páginas132-140
Idiomaen
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
AreaETES
Nota SecundáriaA1_ENGENHARIAS_III A1_ENGENHARIAS_I A2_ENGENHARIAS_IV B1_MATERIAIS B1_ENGENHARIAS_II B2_ASTRONOMIA_/_FÍSICA
Tamanho808 KiB
Número de Arquivos1
Arquivo Alvosouza_an adaptive.pdf
Última Atualização2016:08.19.17.56.49 sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 simone
Última Atualização dos Metadados2018:06.04.02.41.03 sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 administrator {D 2016}
Estágio do Documentoconcluido
É a matriz ou uma cópia?é a matriz
Espelhourlib.net/www/2011/03.29.20.55
e-Mail (login)simone
Grupo de Usuáriossimone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Transferível1
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
Tipo do ConteudoExternal Contribution
Estágio do Documentonot transferred
Tipo de Versãopublisher
Permissão de Leituradeny from all and allow from 150.163
Unidades Imediatamente Superiores8JMKD3MGPCW/3F2UALS
Conteúdo da Pasta sourcenão têm arquivos
Conteúdo da Pasta agreement
agreement.html 19/08/2016 14:56 1.0 KiB 
Histórico2016-08-19 17:56:49 :: simone -> administrator :: 2016
2018-06-04 02:41:03 :: administrator -> simone :: 2016
Campos Vaziosalternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination e-mailaddress format isbn lineage mark nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
Data de Acesso19 out. 2020
atualizar 
similares