• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 17
  • 9
  • 2
  • 1
  • Tagged with
  • 29
  • 12
  • 9
  • 9
  • 7
  • 7
  • 6
  • 5
  • 5
  • 5
  • 5
  • 5
  • 4
  • 4
  • 4
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Notabilia ling??stica de la Cr?nica de Vivar: el l?xico militar

Coloma Zurita, Leonor January 2012 (has links)
Tesis para optar al grado de Mag?ster en Ling??stica menci?n Lengua Espa?ola / La aparici?n del manuscrito de la Cr?nica de Vivar, ocurrida a mediados del siglo XX, ha significado la recuperaci?n de uno de los testimonios m?s valiosos con los que puede contar la ling??stica para dar luces acerca del espa?ol de Chile en su etapa de formaci?n. Bas?ndonos en las investigaciones que han logrado dar cuenta de la elusiva presencia de Vivar en Chile, la Cr?nica fue escrita entre los a?os 1549 y 1558, vale decir, el per?odo en que Pedro de Valdivia y sus espa?oles emprendieron la conquista, poblaci?n y sustentaci?n de las provincias del sur del continente. El valor de este documento para los estudios ling??sticos, radica en que se constituye en una muestra concreta del espa?ol que trajeron los conquistadores a Chile; primero, porque viene a ser uno de los documentos m?s tempranos escritos en nuestro territorio y, en segundo lugar, porque se trata del relato producido por el tipo de hablante que incursion? en la conquista de zonas marginales del Nuevo Mundo; vale decir, un soldado que, por lo general, no pertenec?a a la ?lite culta que se asent? en los centros de poder; todo ello permite deducir que los usos idiom?ticos del cronista son muy cercanos a lo que fueron los usos comunes de los primeros espa?oles que se establecieron en Chile.
22

Direitos fundamentais sociais e or?amento p?blico: das escolhas pol?tico-administrativas ao controle de constitucionalidade concentrado

Amico, Carla Campos 13 May 2016 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-27T00:10:08Z No. of bitstreams: 1 CarlaCamposAmico_DISSERT.pdf: 1356161 bytes, checksum: 101c435b8ddc8eeaadfbb5baac16b899 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-09-01T00:27:05Z (GMT) No. of bitstreams: 1 CarlaCamposAmico_DISSERT.pdf: 1356161 bytes, checksum: 101c435b8ddc8eeaadfbb5baac16b899 (MD5) / Made available in DSpace on 2016-09-01T00:27:05Z (GMT). No. of bitstreams: 1 CarlaCamposAmico_DISSERT.pdf: 1356161 bytes, checksum: 101c435b8ddc8eeaadfbb5baac16b899 (MD5) Previous issue date: 2016-05-13 / Esta pesquisa objetiva analisar, a partir da legisla??o, da doutrina e da jurisprud?ncia, o controle de constitucionalidade concentrado das leis e da execu??o or?ament?ria, diante da morosidade e debilidade do Poder p?blico em promover a gradual efetiva??o de direitos fundamentais sociais. Destaca que a implementa??o dos direitos fundamentais sociais elencados na Constitui??o Federal constitui imperativo para a Administra??o P?blica e que o Poder Judici?rio deve garantir sua efetiva??o, rebatendo cr?ticas que aludem ? neutralidade pol?tica da jurisdi??o, ? separa??o dos poderes e ? legitima??o constitucional. Ressalta a import?ncia do aprofundamento do conhecimento do or?amento p?blico que deve ser elaborado e executado de forma respons?vel, voltado para o atendimento das necessidades sociais da popula??o. Analisa o controle do or?amento p?blico nos ?mbitos interno, externo, popular e judicial. Real?a o controle de constitucionalidade difuso em a??es individuais e coletivas que buscam obter a imposi??o de obriga??es prestacionais ao Estado para a consecu??o do m?nimo existencial; e o controle de constitucionalidade das escolhas pol?tico-administrativas, como o mais vantajoso para minorar os transtornos causados ao planejamento or?ament?rio no decorrer do exerc?cio financeiro. Apresenta hip?teses em que a a??o direta de inconstitucionalidade e a argui??o de descumprimento de preceito fundamental podem ser utilizadas para impugnar atos normativos e administrativos ou omiss?es legislativas e administrativas atinentes ao or?amento p?blico, antes e durante o exerc?cio financeiro. Conclui, com embasamento nos estudos realizados, que h? a necessidade de abertura procedimental no controle de constitucionalidade concentrado do or?amento p?blico, nas fases de postula??o, instru??o, decis?o e execu??o, com o fortalecimento de mecanismos de democracia participativa e de di?logo institucional permanente entre os Poderes e destes com a sociedade para garantir a gradual concretiza??o de direitos fundamentais sociais integrantes do m?nimo existencial. / This research aims to analyze, from the point of view of legislation, doctrine and jurisprudence, the concentrated constitutionality control of laws and budget execution, given the slowness and weakness of the public power in promoting the progressive implementation of fundamental social rights. The methodology of this wok comprises a literature survey based on national and international doctrine and court decisions, especially the Brazilian Supreme Court, as well as the legislation related to the subject and other sources of investigative interest. It is pointed out that the implementation of fundamental social rights listed in the Constitution is mandatory for the public administration and the judiciary must ensure its execution, rebutting criticisms that allude to the political neutrality of jurisdiction, the separation of powers and the constitutional legitimacy. It is emphasized the importance of deepening the knowledge that the public budget should be defined and executed in a responsible manner, aimed at meeting the social needs of the population. It is analyzed the control of the public budget from internal, external, popular and judicial levels. It is emphasized the diffuse constitutional control in individual and collective actions that seek to impose obligations regarding social services on the State to achieve the existential minimum; and the control of constitutionality of political and administrative choices as the most advantageous way to minimize inconvenience to the budget during the financial year. It presents hypotheses in which the direct action of unconstitutionality and the claim of breach of fundamental precept can be used to contest normative and administrative acts or legislative and administrative omissions related to the public budget, before and throughout the financial year. Based on the studies carried out, it is concluded that there is the need for procedural opening in concentrated control of constitutionality of the public budget at the postulation, instructions, decision and execution stages, strengthening the participative democracy mechanisms and permanent institutional dialogue between the Powers and also between them and the society to ensure the progressive realization of fundamental social rights that comprise the existential minimum.
23

Consumo familiar: efeitos da valoriza??o do sal?rio m?nimo nas decis?es de gasto das fam?lias brasileiras, nordestinas e potiguares, no per?odo de 1995 a 2011

Figueiredo, Jonilson de Souza 21 August 2013 (has links)
Made available in DSpace on 2014-12-17T14:34:45Z (GMT). No. of bitstreams: 1 JonilsonSF_DISSERT.pdf: 3703447 bytes, checksum: 91765e0c08059d8842a7eaffc73d1209 (MD5) Previous issue date: 2013-08-21 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This research objectify to analyze the effects of minimum wage recovery in the household consumption in the Brazil, northeastern region of the Brazil and the state of the Rio Grande do Norte, in the period of 1995 to 2011. This is because the search for the strengthening of the internal market, via incentive policies to private demand has assumed prominence in the Government agenda. Thus, under the justification of the fierce debate about the effectiveness of countercyclical policies of Brazil, in view of the recent economic crisis, aims to: 1) retake the theoretical debate and, to a certain extent, the evolution of the theory of household consumption, as well as some conclusions about their connection with the minimum wage; 2) to describe the experiences and the effects of this legislation in economic history, with emphasis on the Brazilian case; 3) to present some of the available statistics to research bases, with attention to the specifics of each and the empirical results found for consumption in Brazil; 4) to estimate the effects of minimum wage variation in household consumption in Brazil (BR), northeast (NE) and Rio Grande do Norte (RN). From this, in order to quantify this relationship, makes inferences from the effects of the wage bill and the minimum wage on consumption, in quarterly series (with ad hoc adjustment from the "weights" of each quarter), from classic model of multiple linear regression. The hypothesis is that released: increments in income, derived from the policy of minimum wage recovery will influence directly the household consumption. However, when comparing the results between the units analyzed, the expressiveness of the northeastern families of Brazil and Rio Grande do Norte families front national dynamics with income linked to this floor, drives most significant impacts spending decisions in NE and RN, thus reducing regional disparities in the consumer. The results indicate contrary evidence, because while for the BR a unitary variation in minimum wage increases the consumption in units monetary 1.28, to the NE and RN these parameters are respectively 1.05 and 1.09 / A busca do fortalecimento do mercado interno via pol?ticas de incentivo ? demanda, privada tem assumido destaque na agenda governamental, particularmente ap?s a crise de 2008. Neste contexto, a presente pesquisa tem como objetivo analisar os efeitos da valoriza??o do sal?rio m?nimo no consumo das fam?lias brasileiras, nordestinas e potiguares, no per?odo de 1995 a 2011. Sob a justificativa do debate acerca da efetividade das pol?ticas antic?clicas do Brasil, pretende: 1) recuperar o debate te?rico e, em certa medida, a evolu??o da teoria do consumo agregado, bem como algumas ila??es sobre sua liga??o com o sal?rio m?nimo; 2) descrever as experi?ncias e os efeitos desta legisla??o na hist?ria econ?mica, com ?nfase para o caso brasileiro; 3) apresentar algumas das bases estat?sticas dispon?veis ? pesquisa, com aten??o ?s especificidades de cada uma e aos resultados emp?ricos encontrados para o consumo no Brasil; 4) estimar os efeitos da varia??o do sal?rio m?nimo no consumo familiar no Brasil (BR), Nordeste (NE) e Rio Grande do Norte (RN). A partir disso, no sentido de quantificar essa rela??o, realiza infer?ncias dos efeitos da massa salarial e do sal?rio m?nimo no consumo, em s?ries trimestrais (com ajuste ad hoc a partir dos pesos de cada trimestre), via modelo cl?ssico de regress?o linear m?ltipla. A hip?tese lan?ada consiste que: incrementos na renda, derivados da pol?tica de valoriza??o do sal?rio m?nimo influenciar?o diretamente o consumo das fam?lias. Por?m, quando comparados os resultados entre as unidades analisadas, a expressividade das fam?lias nordestinas e potiguares frente ? din?mica nacional com renda vinculada a esse piso, impulsiona impactos mais significativos nas decis?es de gasto no NE e no RN, reduzindo assim as disparidades regionais de consumo. Os resultados apontam evid?ncias contr?rias, pois enquanto para o BR uma varia??o unit?ria no sal?rio m?nimo aumenta o consumo em 1,28 unidades monet?rias, para o NE e RN esses par?metros s?o, respectivamente, 1,05 e 1,09
24

Une commande neuronale adaptative basée sur des émulateurs neuronal et multimodèle pour les systèmes non linéaires MIMO et SIMO / An adaptative neural control based on neural and multimodel emulators for MIMO and SIMO non linear systems

Bahri, Nesrine 30 September 2015 (has links)
La porosité d'une plaque composite carbone / époxy de type RTM est connue par tomographie X. Une méthode de détermination de cette porosité par mesure de l'atténuation des ondes longitudinales à travers l'épaisseur de cette plaque est proposée. Ces mesures sont effectuées sur des surfaces de dimensions variables (quelques cm2 à quelques mm2) et permettent l’obtention de cartographies. Une correspondance porosité (tomo X) – atténuation (onde US) est déduite et analysée en fonction de la structure du matériau composite. Dans chaque cas, on estime la qualité des relations obtenues et on en déduit les limites de validité de la correspondance porosité-atténuation. Des premiers résultats de tomographie acoustiques sont obtenus. / The porosity of a composite plate in carbon / epoxy of type RTM is known by used of tomography X. A method of determination of this porosity by measure of the mitigation of the longitudinal waves through the thickness of this kind of plate is proposed. These measures are made on surfaces of different sizes (from some cm2 to some mm2) and allow the obtaining of cartographies. A correspondence porosity (tomo X) - Mitigation (US wave) is deducted and analyzed according to the structure of the composite material. In every case, we estimate the quality of the obtained relations and we deduct the limits of validity of the correspondence between porosity and mitigation. First results of acoustic tomography are obtained.
25

Micropropaga??o e conserva??o in vitro de Orthophytum mucugense Wand. e Concei??o

Lima, Andressa Priscila Pianc? Santos 23 March 2016 (has links)
Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-07-19T23:28:56Z No. of bitstreams: 1 DISSERTA??O ANDRESSA PRISCILA PIANC? S. LIMA.pdf: 1903052 bytes, checksum: 3d8a27256e27d81bbdd1cf3ad9eee48f (MD5) / Made available in DSpace on 2016-07-19T23:28:56Z (GMT). No. of bitstreams: 1 DISSERTA??O ANDRESSA PRISCILA PIANC? S. LIMA.pdf: 1903052 bytes, checksum: 3d8a27256e27d81bbdd1cf3ad9eee48f (MD5) Previous issue date: 2016-03-23 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Chapada Diamantina ? BA presents endemic especies with ornamental potential among which is Orthophytum mucugense, which occurs in the municipality Mucug?. This species is a target of extractivism and it is considered vulnerable, rendering studies of propagation and conservation of the species necessary. Therefore, the objective of this study was to establish protocols of micropropagation and in vitro conservation of O. mucugense. To that end, morphogenetic responses were evaluated in three types of explants, stem, root and leaf under the effect of different concentrations of the plant growth regulators NAA, 2,4-D and BAP. Sprouts formation in stem explants by direct organogenesis, in basal leaf explants by indirect organogenesis and callus formation in basal root and leaf explants were obtained. The rooting of the shoots was carried out with 1 coal g.L-1 activated for 30 days, and microplants acclimatized in a greenhouse with direct exposure to the environment. These results evince that tissue culture is a viable tool for in vitro propagation of O. mucugense. In in vitro conservation the effect of the medium salts reduction, of osmotic agents and of the retardant ancymidol in the minimum growth of the plants were tested; after 300 days of cultivation, analysis of the plant growth, of the chlorophyll content and of the regenerative capacity were carried out. On the basis of these assessments, the ancymidol, in the concentrations used, is not efficient in minimal growth induction, and the reduction of MS salts to ?3, with the combination of 45 g.L-1 of sucrose with 7.8 g.L-1 of mannitol is indicated for in vitro conservation of O. mucugense. / A Chapada Diamantina ? BA apresenta esp?cies end?micas com potencial ornamental dentre as quais est? a Orthophytum mucugense, que ocorre no munic?pio de Mucug?. Esta esp?cie ? alvo de extrativismo e considerada como vulner?vel, sendo necess?rios estudos de propaga??o e conserva??o da mesma. Portanto, objetivou-se neste trabalho estabelecer protocolos de micropropaga??o e conserva??o in vitro de O. mucugense. Para isto foram avaliadas as respostas morfog?nicas em tr?s tipos de explantes, caulinar, radicular e foliar, sob efeito de diferentes concentra??es dos reguladores vegetais ANA, 2,4-D e BAP. Foram obtidas forma??o de brotos em explante caulinar por organog?nese direta, em explante foliar basal por organog?nese indireta e forma??o de calo em explante foliar basal e radicular. O enraizamento dos brotos foi realizado com 1 g.L-1 de carv?o ativado por 30 dias, e as microplantas aclimatizadas em casa de vegeta??o com exposi??o direta ao ambiente. Estes dados demonstram que a cultura de tecidos ? uma ferramenta vi?vel para a propaga??o in vitro de O. mucugense. Na conserva??o in vitro foram testados o efeito da redu??o de sais do meio, de agentes osm?ticos e do retardante ancymidol no crescimento m?nimo das plantas; ap?s 300 dias de cultivo foram realizadas an?lises de crescimento das mesmas, do teor de clorofila e da capacidade regenerativa. Com base nestas avalia??es o ancymidol, nas concentra??es utilizadas, n?o ? eficiente na indu??o do crescimento m?nimo, e a redu??o de sais MS para ?3 com a combina??o de 45 g.L-1 de sacarose com 7,8 g.L-1 de manitol ? indicada para conserva??o in vitro de O. mucugense.
26

Herdeiros de m?rtires: a representa??o do Monaquismo Erem?tico Copta em Atan?sio de Alexandria e Jer?nimo de Estrid?o (S?culos III-IV) / nheritors of martyrs: the representation of Monasticism Coptic hermit in Athanasius of Alexandria and Jerome Stridon (Centuries III-IV)

Oliveira, Jorge Gabriel Rodrigues de 20 April 2016 (has links)
Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-10-18T10:49:20Z No. of bitstreams: 1 2016 - Jorge Gabriel Rodrigues de Oliveira.pdf: 1803407 bytes, checksum: 14d3e313e5d9cd8d6206d683acccc3ca (MD5) / Made available in DSpace on 2016-10-18T10:49:20Z (GMT). No. of bitstreams: 1 2016 - Jorge Gabriel Rodrigues de Oliveira.pdf: 1803407 bytes, checksum: 14d3e313e5d9cd8d6206d683acccc3ca (MD5) Previous issue date: 2016-04-20 / This research aims to demonstrate the process of developing a martyr stereotype for the hermit Copts monks, through which we believe we can analyze the hagiographic representation drawn to these religious, from textual traces found in primary sources Vita Antonii (357) and Vita Pauli (374-379), written, respectively, by Athanasius of Alexandria (296-373) and Jerome of Stridon (347-420), about the desert monks Anthony the Great (251- 356) and Paul of Thebes (228-330). We understand that the martyrdom of the content is present in this stereotype monastic hermit Copt, introduced by the authors of the sources, this will allow us greater strength in proving our hypothesis about the development of a patristic representation, which aimed to raise the monks as the authentic successors of the martyrs and establishes guidelines and patristic models defined for these religious and those who followed them. / Nesta pesquisa pretende-se demonstrar o processo de elabora??o de um estere?tipo de m?rtir para os monges eremitas coptas, atrav?s do qual acreditamos ser poss?vel analisar a representa??o hagiogr?fica elaborada para esses religiosos, a partir de vest?gios textuais encontrados nas fontes prim?rias Vita Antonii (357) e Vita Pauli (374-379), de autoria, respectivamente, de Atan?sio de Alexandria (296-373) e Jer?nimo de Estrid?o (347-420), acerca dos monges Ant?o do deserto (251-356) e Paulo de Tebas (228-330). Entendemos que se o conte?do do mart?rio estiver presente neste estere?tipo mon?stico erem?tico copta, introduzido pelos autores das fontes, isto nos permitir? maior solidez na comprova??o de nossa hip?tese acerca da elabora??o de uma representa??o patr?stica, que visava al?ar os monges como os aut?nticos sucessores dos m?rtires, al?m de estabelecer diretrizes e modelos patr?sticos definidos para esses religiosos e aqueles que os seguiam.
27

Edici?n ling??stica de la Cr?nica de Vivar: el tr?nsito de Burgos a Chile

Contreras Dur?n, Margarita January 2010 (has links)
Tesis para optar al grado de Mag?ster en Ling??stica menci?n Lengua Espa?ola / La tesis que a continuaci?n expongo ofrece un establecimiento cr?tico de la lectura de la Cr?nica de Jer?nimo de Vivar, ling??sticamente anotada y prologada. En ella doy cuenta de una visi?n descriptiva y anal?tica, no exhaustiva, de sus principales rasgos fon?ticos, morfol?gicos y sint?cticos. El estudio filol?gico-ling??stico se realiza sobre la base de una completa transcripci?n paleogr?fica de la obra, con el prop?sito de obtener un documento lo m?s fiel al original. Para ello, se contrastaron dos transcripciones de la misma: una de Leopoldo S?ez-Godoy (Coloquium Verlag, Berl?n, 1979) y otra realizada por el profesor Manuel Contreras Seitz. El estudio filol?gico, que se efectu? con la Cr?nica de Vivar, tuvo como modelos las ediciones cr?ticas realizadas por los profesores Ferreccio y Kordic en sus descripciones ling??sticas, dejando de lado la moderaci?n fonografem?tica y los aspectos literarios y referenciales por lo extenso que resultar?a un trabajo de este tipo. Para el estudio netamente ling??stico, realic? la revisi?n de la Historia del Espa?ol de Am?rica de Juan Antonio Frago, la Historia de la Lengua Espa?ola de Rafael Lapesa y la Gram?tica Hist?rica Espa?ola de Vicente Garc?a de Diego, con el fin de identificar los principales rasgos idiom?ticos meridionales presentes en la obra de Vivar; y, establec?, por contraste, los rasgos caracter?sticos del centro norte espa?ol (Burgos, lugar hipot?tico de nacimiento del autor) presentes en la Cr?nica, tomando como base fuentes sobre el espa?ol peninsular como las obras ya citadas de Lapesa y Garc?a de Diego.
28

Estimativa da demanda residencial urbana de ?gua: o caso da cidade de Te?filo Otoni

Figueiredo, S?lvio Luiz de 11 February 2017 (has links)
Submitted by Raniere Barreto (raniere.barros@ufvjm.edu.br) on 2018-05-07T18:19:12Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) s?lvio_luiz_figueiredo.pdf: 1948091 bytes, checksum: 9615d43a375d54bc9dbbf67d8bec0dfb (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-05-14T14:29:30Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) s?lvio_luiz_figueiredo.pdf: 1948091 bytes, checksum: 9615d43a375d54bc9dbbf67d8bec0dfb (MD5) / Made available in DSpace on 2018-05-14T14:29:30Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) s?lvio_luiz_figueiredo.pdf: 1948091 bytes, checksum: 9615d43a375d54bc9dbbf67d8bec0dfb (MD5) Previous issue date: 2017 / O trabalho tem como objetivo estimar a demanda de ?gua do sistema de abastecimento p?blico da Cidade de Te?filo Otoni ? MG, bem como examinar os efeitos das vari?veis determinantes em seu comportamento. Permite ainda uma compreens?o do cen?rio pesquisado, possibilitando, deste modo, analisar a magnitude de poss?veis pol?ticas tarif?rias utilizadas, sendo capaz de sustentar no processo decis?rio sobre a necessidade de investimentos, por meio de proje??es do consumo. Para esse fim, utilizou-se t?cnicas de an?lise explorat?ria temporal de dados, considerando o per?odo de setembro de 2012 a dezembro de 2014, dividida em duas categorias de consumo: social e normal. O modelo de demanda de ?gua apoiou-se na estrutura tarif?ria da Companhia de Saneamento de Minas Gerais (COPASA-MG), visando avaliar aspectos importantes tanto para o servi?o de abastecimento de ?gua quanto de consumidores. Ressalta-se a import?ncia das vari?veis pre?o m?dio, renda e clima, objetivando-se substancialmente em encontrar os par?metros de elasticidade. A compreens?o desses par?metros viabiliza uma an?lise do impacto de pol?ticas tarif?rias e possibilita a proje??o do consumo futuro de ?gua no longo prazo. Os resultados encontrados destacam a inelasticidade pre?o da demanda de ?gua para ambas categorias estudadas, apresentando coeficientes significativos para o pre?o marginal e a vari?vel diferen?a. A quantidade de ?gua defasada e a renda para ambas as categorias estudadas, n?o apresentaram o sinal esperado pela literatura; j? o clima, na categoria normal, o coeficiente n?o foi significativo estatisticamente; e na categoria social, o coeficiente mostrou-se significativo. Portanto, presume-se um maior conhecimento na estrutura tarif?ria da cidade, al?m da busca por vari?veis que expliquem melhor a demanda de ?gua. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Tecnologia, Sa?de e Sociedade, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / The objective of this work is to estimate the water demand of the Te?filo Otoni - MG public water supply system, as well as to examine the effects of the determinant variables on its behavior. It also allows an understanding of the researched scenario, thus making it possible to analyze the magnitude of possible tariff policies used, being able to sustain in the decision making process on the need for investments, through consumption projections. For this purpose, we used techniques for exploratory temporal data analysis, considering the period from September 2012 to December 2014, divided into two categories of consumption: social residential and normal residential. The water demand model was based on the tariff structure of the Minas Gerais Sanitation Company (COPASA-MG), in order to evaluate important aspects for both the water supply service and consumers. The significance of the variables average price, income and climate is emphasized, aiming substantially at finding the parameters of elasticity. The understanding of these parameters enables an analysis of the impact of tariff policies and enables the projection of future water consumption in the long term. The results found highlight the price inelasticity of water demand for both categories studied, presenting significant coefficients for the marginal price and the difference variable. The coefficient was not statistically significant, in the social category, the coefficient showed to be highly significant. The coefficient was not statistically significant, in the social category, the coefficient showed to be highly significant. Therefore, it is assumed a greater knowledge in the tariff structure of the city, besides the search for variables that better explain the water demand.
29

Otimiza??o do controle do diagrama de radia??o de radares de varredura para rastreio de foguetes usando o m?todo GAMMC para o Caso Planar (GAMMC-P)

Silva, Leonardo Wayland Torres 19 June 2015 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-05-03T22:56:48Z No. of bitstreams: 1 LeonardoWaylandTorresSilva_TESE.pdf: 3255016 bytes, checksum: 1c9f68f3968c7c1bdbdc4119bde6f919 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-05T20:16:14Z (GMT) No. of bitstreams: 1 LeonardoWaylandTorresSilva_TESE.pdf: 3255016 bytes, checksum: 1c9f68f3968c7c1bdbdc4119bde6f919 (MD5) / Made available in DSpace on 2016-05-05T20:16:14Z (GMT). No. of bitstreams: 1 LeonardoWaylandTorresSilva_TESE.pdf: 3255016 bytes, checksum: 1c9f68f3968c7c1bdbdc4119bde6f919 (MD5) Previous issue date: 2015-06-19 / Os centros de lan?amento e rastreio t?m por finalidade realizar atividades cient?ficas e comerciais com ve?culos aeroespaciais. Os Sistemas de Rastreio de Foguetes (SRF) integram a infraestrutura desses centros, sendo respons?veis pela coleta e processamento dos dados da trajet?ria dos ve?culos. Os sensores dos SRFs normalmente s?o Radares com Refletores Parab?licos (RRPs), mas tamb?m ? poss?vel usar radares com arranjos de antenas, chamados de Arranjos de Varredura (AVs), originando os Radares com Arranjos de Varredura (RAVs). Nos AVs, o sinal de alimenta??o de cada elemento radiante do arranjo pode ser ajustado para fazer o controle eletr?nico do diagrama de radia??o, a fim de aumentar as funcionalidades e reduzir as manuten??es do sistema. Com isso, nos projetos de implanta??o e reutiliza??o de RAVs, a modelagem est? sujeita a v?rias combina??es de sinais de alimenta??o, produzindo um problema de otimiza??o complexo, devido ao grande n?mero de solu??es dispon?veis. Para solucionar tal problema, ? poss?vel usar m?todos de otimiza??o off-line, tais como Algoritmos Gen?ticos (AGs), cujas solu??es calculadas s?o armazenadas para aplica??es on-line. Nesse contexto, o m?todo do Algoritmo Gen?tico com Crossover M?ximo-M?nimo (Genetic Algorithm with Maximum-Minimum Crossover - GAMMC) foi usado para desenvolver o algoritmo GAMMC-P, que otimiza a etapa de modelagem do controle do diagrama de radia??o de AVs planares. Comparado a um AG com recombina??o convencional, o GAMMC tem uma abordagem diferente, pois realiza a recombina??o de indiv?duos mais aptos com indiv?duos menos aptos, para aumentar a diversidade gen?tica da popula??o, evitando a converg?ncia prematura, aumentando o fitness e reduzindo o tempo de processamento. Assim, o GAMMC-P utiliza um algoritmo reconfigur?vel, com m?ltiplos objetivos, codifica??o real diferenciada e o operador gen?tico MMC, tendo atingido com sucesso os requisitos propostos para diferentes condi??es de opera??o de um RAV planar. / Launching centers are designed for scientific and commercial activities with aerospace vehicles. Rockets Tracking Systems (RTS) are part of the infrastructure of these centers and they are responsible for collecting and processing the data trajectory of vehicles. Generally, Parabolic Reflector Radars (PRRs) are used in RTS. However, it is possible to use radars with antenna arrays, or Phased Arrays (PAs), so called Phased Arrays Radars (PARs). Thus, the excitation signal of each radiating element of the array can be adjusted to perform electronic control of the radiation pattern in order to improve functionality and maintenance of the system. Therefore, in the implementation and reuse projects of PARs, modeling is subject to various combinations of excitation signals, producing a complex optimization problem due to the large number of available solutions. In this case, it is possible to use offline optimization methods, such as Genetic Algorithms (GAs), to calculate the problem solutions, which are stored for online applications. Hence, the Genetic Algorithm with Maximum-Minimum Crossover (GAMMC) optimization method was used to develop the GAMMC-P algorithm that optimizes the modeling step of radiation pattern control from planar PAs. Compared with a conventional crossover GA, the GAMMC has a different approach from the conventional one, because it performs the crossover of the fittest individuals with the least fit individuals in order to enhance the genetic diversity. Thus, the GAMMC prevents premature convergence, increases population fitness and reduces the processing time. Therefore, the GAMMC-P uses a reconfigurable algorithm with multiple objectives, different coding and genetic operator MMC. The test results show that GAMMC-P reached the proposed requirements for different operating conditions of a planar RAV.

Page generated in 0.0339 seconds