Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-01-15T22:16:15Z No. of bitstreams: 1 JoshuaMichaelMartin_DISSERT.pdf: 2221771 bytes, checksum: 74b1d657dbbdcac47f35b00b842db1bc (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-01-18T14:37:21Z (GMT) No. of bitstreams: 1 JoshuaMichaelMartin_DISSERT.pdf: 2221771 bytes, checksum: 74b1d657dbbdcac47f35b00b842db1bc (MD5) / Made available in DSpace on 2018-01-18T14:37:21Z (GMT). No. of bitstreams: 1 JoshuaMichaelMartin_DISSERT.pdf: 2221771 bytes, checksum: 74b1d657dbbdcac47f35b00b842db1bc (MD5) Previous issue date: 2017-12-08 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A diferen?a entre a menta??o experimentada durante o sono de oculares r?pidos (REM) e o sono n?o-REM persiste como quest?o importante para investiga??o no campo de pesquisa dos sonhos. Estudos anteriores t?m mostrado que os relatos de sonho documentados depois do REM s?o, em m?dia, mais longos, v?vidos, bizarros, emocionais e com aspectos mais narrativos do que os relatos do n?o-REM. Apesar desses achados, falta uma compara??o estrutural entre relatos de sonho do REM e n?o-REM no que diz respeito ? organiza??o de palavra-a-palavra, e diversas medidas tradicionais de sonhos podem ser confundidas pelo comprimento do relato. A an?lise de fala transformada em grafos direcionados de palavras pode ser aplicada para fazer uma avalia??o estrutural de relatos verbais e tamb?m para controlar as diferen?as individuais de verbosidade. No presente estudo, tivemos como objetivo investigar as poss?veis diferen?as na conectividade dos relatos e sua aproxima??o a uma estrutura aleat?ria atrav?s da an?lise de grafos em 125 relatos de sonho obtidos por 19 participantes em despertares controlados nas fases de sono REM e N2. Constatou-se que: (1) grafos do REM possuem uma conectividade maior do que os do N2; entretanto, essas diferen?as n?o foram refletidas na aproxima??o a um grafo rand?mico; (2) diversas medidas de grafo podem predizer avalia??es externas da complexidade do sonho, onde a conectividade aumenta e sua natureza rand?mica cai em rela??o ? complexidade do relato; e (3) o Componente Maior Conectado (LCC) do grafo pode melhorar o ajuste de um modelo contendo o comprimento do relato como vari?vel no discernimento da fase do sono e na predi??o da complexidade do sonho. Esses resultados sugerem que os relatos do REM possuem uma conectividade maior do que os relatos do N2 (i.e. as palavras recorrem com uma dist?ncia maior), o que, em nossa vis?o, est? relacionado a diferen?as subjacentes na complexidade dos sonhos. Esses achados tamb?m apontam para a an?lise de grafos como um m?todo promissor no campo dos sonhos, devido ? sua rela??o com a complexidade do sonho e ao seu potencial de atuar como uma medida complementar ao comprimento do relato. / The extent to which Rapid Eye Movement Sleep (REM) mentation may differ to that of non-REM remains an important area of enquiry in dream research. Previous studies have found that dream reports collected after REM awakenings are, on average, longer, more vivid, bizarre, emotional and story-like compared to those collected after non-REM. Despite this, a comparison of the word-to-word structural organisation of dream reports is lacking, and traditional measures that distinguish REM and non-REM dreaming may be confounded by report length. The analysis of speech as directed word graphs can be suitably applied, as it provides a structural assessment of verbal reports, while controlling for differences in verbosity. In the present study, we aimed to investigate the differences in the connectedness of dream reports and their approximation to a random-like structure through applying speech graph analysis to 125 mentation reports obtained from 19 participants in controlled laboratory awakenings from REM and N2 sleep. We found that: (1) transformed graphs from REM possess a larger connectedness compared to those from N2; (2) measures of graph structure can predict ratings of dream complexity, where increases in connectedness and decreases in their random-like nature are observed in relation to increasing dream report complexity; and (3) the Largest Connected Component (LCC) can improve a model containing report length in predicting sleep stage and dream complexity. These results suggest that REM dream reports have a larger connectedness compared to N2 (i.e. words recur with a longer range), which we interpret to be related to underlying differences in dream complexity. They also point to speech graph analysis as a promising method for dream research, due to its relation to dream complexity and its potential to complement report length in dream analysis.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-01-18T10:50:44Z No. of bitstreams: 1 FranciscoAssisVieiraLimaJunior_DISSERT.pdf: 656231 bytes, checksum: f6ccd153b3b8dcff92b89db4dc0c38d4 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-01-22T14:47:13Z (GMT) No. of bitstreams: 1 FranciscoAssisVieiraLimaJunior_DISSERT.pdf: 656231 bytes, checksum: f6ccd153b3b8dcff92b89db4dc0c38d4 (MD5) / Made available in DSpace on 2018-01-22T14:47:13Z (GMT). No. of bitstreams: 1 FranciscoAssisVieiraLimaJunior_DISSERT.pdf: 656231 bytes, checksum: f6ccd153b3b8dcff92b89db4dc0c38d4 (MD5) Previous issue date: 2017-11-20 / Introdu??o: apesar da cobertura midi?tica trazer a certeza de uma rela??o entre o V?rus da Zica e microcefalia em rec?m-nascidos, configurando um aumento no agrupamento das anomalias cong?nitas no Nordeste brasileiro, sugere-se que a incid?ncia de anomalia cong?nitas no Rio Grande do Norte n?o seja diferente quando comparada a sua distribui??o espacial antes e ap?s Zica, isso porque fatores como os ambientais, socioecon?micos e biol?gicos podem contribuir para a perman?ncia de uma alta incid?ncia no estado. Objetivo: analisar a distribui??o temporo-espacial das taxas de incid?ncia de anomalias cong?nitas no Rio Grande do Norte, antes e ap?s a epidemia v?rus da zica atrav?s de uma an?lise geoestat?stica e correla??o com os determinantes sociais em sa?de M?todos: trata-se de um estudo epidemiol?gico do tipo ecol?gico, retrospectivo que avaliou os casos notificados de anomalias cong?nitas no Rio Grande do Norte agrupando em dois bi?nios (2005-2006 e 2015-2016), configurando per?odos antes e ap?s a epidemia de zica atrav?s de uma an?lise espacial, cujos dados obtidos do DATASUS e da Secretaria Estadual de Sa?de, foram agrupados no SPSS 13.0 e analisados no Terraview vers?o 4.2.2. Resultados: a taxa de anomalias cong?nitas no per?odo pr?-Zica foi de 11,83 casos/1.000 nascidos vivos e no per?odo p?s-Zica aumentou para 14,24 casos/1.000 nascidos vivos, resultado do aumento dos casos notificados. Foi observada que a mesorregi?o Agreste Potiguar ? a que possui maior n?mero de casos notificados de Zica assim como ? a regi?o que concentra maior n?mero de casos de anomalias cong?nitas no per?odo estudado, estando correlacionada com regi?o com grandes dicotomias sociais. Conclus?es: o presente parece revelar que as anomalias cong?nitas sempre estiveram presentes no estado e nenhuma outra a??o foi suscitada com tamanha import?ncia como no per?odo Zica. Estrat?gias para minimizar os casos de anomalias cong?nitas atrav?s de a??es de planejamento familiar, controle da idade materna, programas de vacina??o, controle na venda de medicamentos abortivos, combate ao consumo de drogas, ?lcool e fumo podem facilmente ser desenvolvida e ganhar ades?o midi?tica, fato que nem sempre ? percebido, tendo a m?dia dado um enfoque ao aumento dos casos de notifica??o sem buscar entender o processo. / Introduction: although the media coverage provides certainty of a relationship between the Zika virus and microcephaly in newborns, which is an increase in the grouping of congenital anomalies in the Brazilian Northeast, it is suggested that the incidence of congenital anomaly in Rio Grande do Sul North isn?t different when compared to its spatial distribution before and after Zika, because factors such as environmental, socioeconomic and biological can contribute to the permanence of a high incidence in the state. The objective of the present study is to analyze the temporal-spatial distribution of the incidence rates of congenital anomalies in Rio Grande do Norte, before and after the epidemic virus Zika through a geostatistical analysis and correlation with the social determinants in health. Methods: this is an ecological that evaluated the reported cases of congenital anomalies in Rio Grande do Norte before and after the Zika epidemy through a spatial analysis, whose data were grouped in SPSS 13.0 and analyzed in Terraview version 4.2.2. Results: the rate of congenital anomalies in the pre-Zika period was 11.83 cases / 1.000 live births and in the post Zika period it increased to 14.24 cases/1.000 live births, a result of the increase in reported cases. It was visualized that the Agreste Potiguar mesoregion is the one with the highest number of reported cases of Zika, as it is the region that concentrates the largest number of cases of congenital anomalies in the period studied, being correlated with the region with great social dichotomies. Conclusion: the present study revealed that congenital anomalies were always present in the state and no other action was raised with such importance as in the Zika period. Strategies to minimize cases of congenital anomalies through family planning actions, maternal age control, vaccination programs, control in the sale of abortive drugs, drug, alcohol and tobacco use can easily be developed and gain media adherence, fact which is not always perceived, the media having given a focus to the increase of the cases of notification without seeking to understand the process.

Made available in DSpace on 2014-12-17T14:06:51Z (GMT). No. of bitstreams: 1 FranciericAA.pdf: 3105945 bytes, checksum: 434348633df1dedcb6e622baefde201e (MD5) Previous issue date: 2009-03-26 / This work aims to develop a methodology for analysis of images using overlapping, which assists in identification of microstructural features in areas of titanium, which may be associated with its biological response. That way, surfaces of titanium heat treated for 08 (eight) different ways have been subjected to a test culture of cells. It was a relationship between the grain, texture and shape of grains of surface of titanium (attacked) trying to relate to the process of proliferation and adhesion. We used an open source software for cell counting adhered to the surface of titanium. The juxtaposition of images before and after cell culture was obtained with the aid of micro-hardness of impressions made on the surface of samples. From this image where there is overlap, it is possible to study a possible relationship between cell growth with microstructural characteristics of the surface of titanium. This methodology was efficient to describe a set of procedures that are useful in the analysis of surfaces of titanium subjected to a culture of cells / O presente trabalho tem como objetivo desenvolver uma metodologia de an?lise de imagens, utilizando sobreposi??es, que auxilie na identifica??o de caracter?sticas microestruturais, em superf?cies de tit?nio, que possam estar associadas com a sua resposta biol?gica. Desse modo, superf?cies de tit?nio tratadas termicamente de 08(oito) diferentes maneiras foram submetidas a um ensaio de cultura de c?lulas. Buscou-se uma rela??o entre os gr?os, textura e contornos de gr?os da superf?cie de tit?nio (atacada) procurando relacionar com o processo de prolifera??o e ades?o. Foi utilizado um software open source para a contagem das c?lulas aderidas ? superf?cie do tit?nio. A justaposi??o das imagens antes e ap?s a cultura de c?lulas foi obtida com o aux?lio de impress?es de micro-dureza feita sobre a superf?cie das amostras. A partir desta imagem onde h? a sobreposi??o, ? poss?vel o estudo de uma poss?vel rela??o entre o crescimento celular com as caracter?sticas microestruturais da superf?cie de tit?nio. Essa metodologia se mostrou eficiente ao descrever um conjunto de procedimentos que s?o ?teis na analise de superf?cies de tit?nio submetidos a uma cultura de c?lulas

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-16T20:26:43Z No. of bitstreams: 1 IsacBarbosaDeAlmeida_DISSERT.pdf: 2821753 bytes, checksum: df59d2e78eb7f99cfa9a96085f3eae4c (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-08-18T21:53:45Z (GMT) No. of bitstreams: 1 IsacBarbosaDeAlmeida_DISSERT.pdf: 2821753 bytes, checksum: df59d2e78eb7f99cfa9a96085f3eae4c (MD5) / Made available in DSpace on 2016-08-18T21:53:45Z (GMT). No. of bitstreams: 1 IsacBarbosaDeAlmeida_DISSERT.pdf: 2821753 bytes, checksum: df59d2e78eb7f99cfa9a96085f3eae4c (MD5) Previous issue date: 2016-05-06 / Com a intensa utiliza??o de rolamentos em diversos segmentos da ind?stria, h? um elevado n?mero de pausas necess?rias nos processos industriais para a realiza??o de manuten??es nesses dispositivos, tendo como estudo de caso os aerogeradores. O crescimento do setor de energia e?lica, incentivou a realizar uma pesquisa que auxilie a solu??o desse problema. Para contribuir com a manuten??o preventiva foi realizado uma an?lise de sinais aplicando t?cnicas que permitem a detec??o e a localiza??o do problema a fim de evitar acidentes e preju?zos ocasionados por falhas inesperadas nos equipamentos, visto que a baixa rota??o do sistema dificulta a detec??o da falha. Para solucionar esse item, realizou-se a determina??o de sinais padr?o para os defeitos nos rolamentos, facilitando o diagn?stico de poss?veis falhas. Com esse diagn?stico pode ser executada uma manuten??o preventiva, identificando a falha do sistema que foram testadas, como a introdu??o de gr?os de areia no rolamento, desgaste na pista externa do rolamento e oxida??o do rolamento. Atrav?s do processamento de sinais ? poss?vel construir os gr?ficos desenvolvendo um mapeamento dos defeitos atrav?s de diferentes picos nas faias de frequ?ncia. / With the heavy use of bearings in various segments of the industry, there are a large number of necessary interruptions in industrial processes to perform maintenance on these devices, with the case study wind turbines. The growth of the wind energy sector, encouraged to conduct research that helps to solve this problem. To contribute to predictive maintenance has been carried out a signal analysis using techniques which allow detection and location of the problem in order to prevent accidents caused and losses due to unexpected equipment failures, whereas low system rotation complicates the detection of the failure. To work around this problem, there was the indication of standard signals for defects in the bearings, making diagnosis of possible failures. With this diagnosis can be performed predictive maintenance, identifying the failure of the system that were tested, such as the introduction of grains of sand in the bearing, wear on the outer race of the bearing and bearing rust. By processing signals it is possible to construct graphs developing a mapping of defects by different peaks in the frequency band.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-27T00:05:27Z No. of bitstreams: 1 LauraKyokoHonda_DISSERT.pdf: 3602339 bytes, checksum: 032b9ed8e00a45dd021013799bd260c5 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-08-31T23:45:07Z (GMT) No. of bitstreams: 1 LauraKyokoHonda_DISSERT.pdf: 3602339 bytes, checksum: 032b9ed8e00a45dd021013799bd260c5 (MD5) / Made available in DSpace on 2016-08-31T23:45:07Z (GMT). No. of bitstreams: 1 LauraKyokoHonda_DISSERT.pdf: 3602339 bytes, checksum: 032b9ed8e00a45dd021013799bd260c5 (MD5) Previous issue date: 2016-03-03 / Estudos sobre movimenta??o podem fornecer diversos tipos de informa??es sobre a ecologia de diferentes grupos animais, desde padr?es de uso de habitat at? infer?ncias sobre estados comportamentais. O presente trabalho tem como objetivo a caracteriza??o dos padr?es de movimenta??o em fina escala dos machos cantores de Jubarte em um s?tio reprodutivo para detectar efeitos da abund?ncia de machos cantores e da presen?a de embarca??es. Adicionalmente, buscou-se verificar se ? poss?vel fazer infer?ncias sobre os estados comportamentais dos cantores atrav?s das suas trajet?rias. A coleta dos dados foi feita utilizando-se arranjos de gravadores ac?sticos aut?nomos desenvolvidos pelo Programa de Pesquisas em Bioac?stica da Universidade de Cornell - EUA. O estudo foi realizado no s?tio reprodutivo das baleias Jubarte do Pac?fico Sul Ocidental localizado no Banco dos Abrolhos-BA durante a temporada reprodutiva de 2005. Os machos cantores de Jubarte foram identificados atrav?s da detec??o dos seus sons por meio da inspe??o visual dos espectrogramas das grava??es. As posi??es dos cantores foram estimadas atrav?s da localiza??o de cada som identificado com boa qualidade em pelo menos 3 dos 5 canais de ?udio atrav?s de algoritmo customizado em ambiente MATLAB. Da mesma forma foi realizada a detec??o dos eventos de embarca??es. As trajet?rias foram constru?das a partir dos pontos de localiza??o ap?s uso do filtro Kalman. As trajet?rias foram classificadas em categorias de abund?ncia de cantores (baixa = at? dois cantores e alta = a partir de tr?s cantores) e de presen?a de barco (presen?a e aus?ncia). Fun??es de distribui??o de probabilidade foram constru?das a fim de testarmos, por meio da an?lise de m?xima verossimilhan?a, qual distribui??o se ajustaria melhor aos nossos dados. Foi feita uma sele??o de modelos concorrentes incluindo como modelos as categorias de an?lise (abund?ncia e presen?a de barcos) e as fun??es de distribui??o ajustadas aos dados. A vari?vel preditora utilizada foi a velocidade. O melhor modelo foi escolhido com o Crit?rio de Informa??o de Akaike corrigido para pequenas amostras (AICc). Os padr?es de movimenta??o descritos diferiram de estudos pr?vios. Nossas categorias de an?lise n?o se mostraram boas para a explicar a varia??o dos dados, mas os modelos foram capazes de identificar dois padr?es distintos de movimenta??o de machos cantores de jubarte: passos lentos e constantes caracterizando um estado comportamental explorat?rio intercalados por raros passos r?pidos que caracterizam um movimento direcional. As motiva??es para a altern?ncia entre os diferentes estados comportamentais provavelmente envolvem diferentes estrat?gias reprodutivas. Nossos resultados mostraram que trajet?rias baseadas em dados ac?sticos podem ser utilizadas para a infer?ncia de estados comportamentais distintos de baleias jubarte atrav?s da an?lise dos padr?es de movimenta??o. / Studies on movement may provide various types of information on the ecology of different animal groups, from perception and habitat use to inferences on behavioral states. This study aims to characterize movement patterns in thin range of male humpback singers at a reproductive site and to detect effects of singing males abundancy and presence of vessels. Additionally, we verified if it is possible the inference of different behavioral states of singer males through their trajectory. Data collection was done using arrangements of autonomous acoustic recorders developed by the Bioacoustics Research Program of Cornell University ? EUA. The study was conducted at the reproductive site of the humpback whales from the Western South Pacific, located at the Abrolhos Bank, state of Bahia, Brazil, during the reproductive season of 2005. Singing humpback males were identified through the detection of their sounds by visual inspection of the recording spectrograms. Singers positions were estimated through location of each sound identified with good quality in at least three of five audio channels through a custom algorithm in a MATLAB environment. Detection of vessels events was done the same way. Trajectories were built from location points after using the Kalman filter. Trajectories were arranged in categories such as singers abundancy (low = up to two singers and high = from three singers on) and vessel presence (presence and absence). Functions of probability distribution were built for us to test, by likelihood analysis, which distribution adjusts better to our data. A selection of competing models was done, including as models analysis categories (abundancy and presence of vessels) and distribution functions adjusted to our data. The predictor variable used was speed of each step. The best model was selected with Akaike?s Information Criterion corrected for small samples (AICc). Movement patterns described differed from previous studies. Our analysis categories were not good to explain data variation, but models were capable of identifying two distinct movement patterns of humpback male singers: slow and constant steps characterizing an exploratory behavioral state interpolated by rare fast steps which characterize a directional movement. Motivations for variation between different behavioral states probably involve different reproductive strategies. Our results showed that trajectory based on acoustic data can be used to infer distinct behavioral states o humpback whales through the analysis of movement patterns.

Needs that are shared by members of an organization can trigger an organizational learning process. To a large extent, needs are implicitly anchored in organizations and people can hardly articulate them. In this article, we present Bewextra, a method that allows for identifying hidden needs in organizations. Thereby, we trigger a knowledge conversion process, which is similar to Nonaka's SECI-spiral. In two case studies, we present how our Bewextra-process is applied to projects in educational contexts in Austria. In a first case study, we show that a combination of learning from past and future experiences extend the scope of the overall outcome. Since learning from future experiences requires a distinct environment (enabling spaces), we present a second case study. Here, we conducted a Bewextra-process with a large number of participants (n > 170), focusing on learning from future experiences.

Innovation processes require organizations to transcend current boundaries. These include not only technological as well as social limitations but "above all" the way we address the future. We are used to face the future with our existing knowledge and experiences from the past. This strategy, however, can hardly lead to knowledge off the beaten path. We therefore suggest a new learning approach for organizations, which enables to literally envision a desired future scenario and thereby, allows for the creation of radical new knowledge. We argue that the created knowledge yields a higher degree of novelty and radicalness. Along with an enhanced theory of learning including learning from the future, we present our empirical findings from comparing the outputs of Learning from an Envisioned Future and learning from the past. For this purpose, we use data from two organizational learning projects; one, which was conducted with a high school in Austria and another one, which was conducted with members of the Austrian Economic Chamber. Our findings from both case studies suggest that Learning from an Envisioned Future does produce significantly more paradigm challenging knowledge compared to the output gained from conventional learning from past experiences. We conclude that the combination of both learning sources may lead to best learning outcomes in organizations.

¿Does an award that restitutes a, wrongly resolved, construction contract have effects if the project of work is completed? And ¿what effects does an award have if the work is being developed by a third party?.In this article, the author seeks to answer the questions raised exposing what effects has, in the reality, an award that reinstates contractual relations. / ¿Un laudo arbitral que restituye un contrato de ejecución de obra inválidamente resuelto tiene efectos si la obra ya se culminó? Y ¿qué efectos tiene el laudo si la obra está siendo continuada por un tercero?.En el presente artículo, el autor busca responder a las cuestiones planteadas exponiendo qué efectos tiene, en la realidad, un laudo que restituye relaciones contractuales.

Is the Kantian Universalization Demand a Suficient Procedure forthe Establishment of Moral-Ethical Contents? Some Considerations Regardinga Negative Answer to this Question”. In this article we analyze the thesis thatclaims the suficiency of the Kantian universalization procedure expressed inthe categorical imperative of the general law (Groundwork of the Metaphysics ofMorals) to determine the content of morality, with the aim of holding that thisthesis contradicts Kant’s inal conception of Ethics as it is expounded in Metaphysicsof Morals, insofar as it is structured upon the normative priority of theend of humanity”. The effective adoption of this end –or practical principle– isa necessary condition for the ascription of morality and for the determination ofthe content” of the moral law”. In order to achieve this aim, we analyze two ofthe most inluential interpretations that are at the base of the aforementionedthesis, v.gr., John R. Silber’s, in Procedural Formalism in Kant’s Ethics”, andHenry E. Allison’s in Morality and Freedom: Kant’s Reciprocity Thesis”. / En este artículo se analiza la tesis acerca de la suiciencia del procedimientode universalización presente en el imperativo categórico de la leygeneral (Fundamentación de la metafísica de las costumbres) para determinarel contenido de la moralidad, con el in de sostener que esta tesis se contradicecon la concepción inal de la ética kantiana en la Metafísica de las costumbres,en la medida en que ella se estructura en base a la prioridad normativa del inde la humanidad”, cuya adopción efectiva por parte de los agentes es condiciónnecesaria para la adscripción de moralidad y para la determinación del contenido”de la ley moral”. Con este propósito, se analizan críticamente dos de laslecturas más inluyentes que están a la base de tal tesis, a saber, la de John R.Silber en Procedural Formalism in Kant’s Ethics”, y la de Henry E. Allison enMorality and Freedom: Kant’s Reciprocity Thesis”.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:53Z No. of bitstreams: 5 15.pdf: 1451318 bytes, checksum: bf4c447fee881cbe87b63b4eb3d3037e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T11:20:27Z (GMT) No. of bitstreams: 5 15.pdf: 1451318 bytes, checksum: bf4c447fee881cbe87b63b4eb3d3037e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T11:20:27Z (GMT). No. of bitstreams: 5 15.pdf: 1451318 bytes, checksum: bf4c447fee881cbe87b63b4eb3d3037e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Trabalhos que avaliam os aspectos t?cnicos e econ?micos do processo produtivo da cultura do eucalipto praticada pelos produtores rurais no Alto Jequitinhonha, regi?o que possui uma das maiores ?reas plantadas com essa esp?cie no estado de Minas Gerais, s?o pouco frequentes. A participa??o de Produtores Rurais (PR) tem se destacado nos ?ltimos anos e socializa uma atividade ent?o praticada predominantemente por grandes empresas florestais, fato este que suporta a escassez de trabalhos direcionados para produ??o em menor escala. Este estudo objetivou avaliar as pr?ticas de silvicultura empregadas pelos PR tendo como refer?ncia as pr?ticas adotadas por uma empresa que utiliza em seus plantios as melhores tecnologias silviculturais; estimar os custos de forma??o e condu??o de florestas conforme os procedimentos empregados pelos produtores em rela??o a diferentes op??es tecnol?gicas; e analisar o retorno de investimentos estimados sob crit?rios econ?micos. A popula??o abrangida neste estudo correspondeu a 583 PR do Alto Jequitinhonha que apresentaram Declara??es de Colheita e Comercializa??o no Instituto Estadual de Florestas entre janeiro de 2008 e outubro de 2009. Neste universo, 71 PR foram escolhidos aleatoriamente para responder um formul?rio com perguntas que abordaram a origem do material gen?tico, espa?amento, rota??o, todas as pr?ticas de silvicultura, a colheita e comercializa??o da madeira adotada. Estas mesmas vari?veis foram avaliadas em uma grande empresa florestal instalada na regi?o que trabalha com as melhores pr?ticas silviculturais. Ap?s obtidos, os dados foram analisados pela estat?stica descritiva. Os PR do Alto Jequitinhonha t?m significativa ?rea plantada com Eucalyptus urophylla e E. cloesiana, entretanto a tecnologia de silvicultura adotada ? obsoleta em rela??o ?s tecnologias empregadas por grandes empresas. Consequentemente, reduzem-se o potencial produtivo dos s?tios florestais e o retorno econ?mico. De forma geral a madeira de eucalipto ? direcionada para produ??o de carv?o vegetal. A tecnologia utilizada pelos produtores rurais na regi?o de estudo n?o ofereceu os melhores resultados econ?micos em qualquer dos cen?rios de pre?os estudados quando comparadas com a tecnologia utilizada pela empresa que utiliza elevado n?vel tecnol?gico. Devido ?s suas propriedades tecnol?gicas e ao uso pelo mercado madeireiro, a melhor viabilidade econ?mica para a madeira do E. cloesiana ? sua comercializa??o para a produ??o de postes de cerca, mour?es e para a constru??o civil. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT Studies evaluating the technical processes of eucalyptus plantation by small and medium forest farmers at Alto Jequitinhonha region, in the northeast part of the state of Minas Gerais, are rare, even though this state has one of the largest eucalyptus areas in Brazil. The participation of farmers has been prominent in recent years, increasing the social benefits of eucalyptus plantation, as it had been traditionally planted by large forest companies so far. This study aimed to evaluate the forestry practices employed by these farmers in comparison to the best practices adopted by traditional companies, by estimating cost x benefit relation of forestry as a complementary business, based on the procedures carried out by these farmers under different technological options. The population covered by this study was represented by 583 farmers from Alto Jequitinhonha, who registered a document called ?Harvest statement?, as required by the state agency ?Instituto Estadual de Florestas?, between January 2008 and October 2009. From these, 71 farmers were randomly selected to answer a questionnaire addressing data such as the origin of species, spacing, rotation, the main silvicultural practices, harvesting and commercialization strategies employed. The same variables from a large regional forestry company were evaluated and used as reference. Data collected was analyzed by using descriptive statistics. It was found that farmers of Alto Jequitinhonha owns a very significant planted area with Eucalyptus urophylla and E. Cloesiana, although they employ much lower technological level in comparison to the technologies used by the large company. In consequence, the potential yield in these sites is reduced. In general, the eucalyptus wood is intended for charcoal production. The technology used by farmers in the study area did not offer the best economic results in any of the price scenarios studied, when compared to the company used as reference. E. cloesiana showed a better economic return, due to its technological properties and better acceptance into the local market, for lamp posts, fence posts and overall use in civil construction.