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  • 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.
41

How Does External Referencing Define Sense of Self and Link to Relational Well-Being?

Price, Amber A. 18 March 2021 (has links)
As individuals develop, it is natural to reference social situations to learn about the self. Even as adults, some learning about the self comes from interactions with others. However, when adults consistently allow others to define their sense of self, their focus may shift away from connection and intimacy toward external factors. No studies have examined how allowing others to define the sense of self is associated with intimacy and satisfaction in relationships. Using structural equation modeling, this study examined whether allowing others to define the self is associated with a decrease in emotional intimacy, relational satisfaction, and sexual satisfaction and whether this relationship might be mediated by sense of self. I used a sample (n = 421) of U.S. adults in committed sexual relationships. Three common ways of allowing others to define the self—emotional fusion, externalized self-perception, and social comparison—were considered relative to the relational outcomes. Gender differences in the model were also considered. Results showed a negative association between all three ways of allowing others to define the self and all three relational outcomes for men, and negative associations between emotional fusion and externalized self-perception and all three relational outcomes for women. These associations were mediated by sense of self such that those who reported allowing others to define the self, also reported a weaker sense of self. Having a strong sense of self was positively associated with emotional intimacy, relationship satisfaction, and sexual satisfaction. This indicates that looking to outside sources to define the self may hinder intimacy and satisfaction in relationships. Further implications are discussed.
42

A study on the use of ARKit toextract and geo-reference oorplans / En studie på användingen av ARKit för att extrahera och georeferera planlösningar

Larsson, Niklas, Runesson, Hampus January 2021 (has links)
Indoor positioning systems (IPS) has seen an increase in demand because of the needto locate users in environments where Global Navigation Satellite Systems (GNSS) lacksaccuracy. The current way of implementing an IPS is often tedious and time consuming.However, with the improvements of position estimation and object detection on phones,a lightweight and low-cost solution could become the standard for the implementationphase of an IPS. Apple recently included a Light Detection And Ranging (LiDAR) sensorin their phones, greatly improving the phones depth measurements and depth understanding.This allows for a more accurate virtual representation of an environment. This thesisstudies the accuracy of ARKit’s reconstructed world and how different environments impactthe accuracy. The thesis also investigates the use of reference points as a tool to map thereconstructed environment to a geo-referenced map, such as Google Maps and Open StreetMap. The results show that ARKit can create virtual representations with centimetre levelaccuracy for small to medium sized environments. For larger or vertical environments,such as corridors or staircases, ARKit’s SLAM algorithm no longer recognizes previouslyvisited areas, causing both duplicated virtual environments and large drift errors. With theuse of multiple reference points, we showed that ARKit can and should be considered asa viable tool for scanning and mapping small scale environments to geo-referenced floorplans.
43

Prise en compte des dépendances entre données thématiques utilisateur et données topographiques lors d’un changement de niveau de détail / Taking into account the dependences between user thematic data and topographic data when the level of detail is changed

Jaara, Kusay 10 March 2015 (has links)
Avec l'importante disponibilité de données topographiques de référence, la création des données géographiques n'est plus réservée aux professionnels de l'information géographique. De plus en plus d'utilisateurs saisissent leurs propres données, que nous appelons données thématiques, en s'appuyant sur ces données de référence qui jouent alors le rôle de données support. Les données thématiques ainsi saisies font sens en tant que telles, mais surtout de par leurs relations avec les données topographiques. La non prise en compte des relations entre données thématiques et topographiques lors de traitements modifiant les unes ou les autres peut engendrer des incohérences, notamment pour les traitements liés au changement de niveau de détail. L'objectif de la thèse est de définir une méthodologie pour préserver la cohérence entre les données thématiques et topographiques lors d'un changement de niveau de détail. Nous nous concentrons sur l'adaptation des données thématiques suite à une modification des données topographiques, processus que nous appelons migration des données thématiques. Nous proposons d'abord un modèle pour la migration de données thématiques ponctuelles sur réseau composé de : (1) un modèle pour décrire le référencement des données thématiques sur les données topographiques par des relations spatiales (2) une méthode de relocalisation basée sur ces relations. L'approche consiste à identifier les relations finales attendues en fonction des relations initiales et des changements sur les données topographiques entre les états initial et final. La relocalisation est alors effectuée grâce à une méthode multicritère de manière à respecter au mieux les relations attendues. Une mise en œuvre est présentée sur des cas d'étude jouets et sur un cas réel fourni par un service de l'Etat gestionnaire de réseau routier. Nous discutons enfin l'extension du modèle proposé pour traiter la prise en compte des relations pour d'autres applications que la migration de données thématiques / With the large availability of reference topographic data, creating geographic data is not exclusive to experts of geographic information any more. More and more users rely on reference data to create their own data, hereafter called thematic data. Reference data then play the role of support for thematic data. Thematic data make sense by themselves, but even more by their relations with topographic data. Not taking into account the relations between thematic and topographic data during processes that modify the former or the latter may cause inconsistencies, especially for processes that are related to changing the level of detail. The objective of this thesis is to define a methodology to preserve the consistency between thematic and topographic when the level of detail is modified. This thesis focuses on the adaptation of thematic data after a modification of topographic data: we call this process thematic data migration. We first propose a model for the migration of punctual thematic data hosted by a network. This model is composed of: (1) a model to describe the referencing of thematic data on topographic data using spatial relations (2) a method to re-locate thematic data based on these relations. The approach consists in identifying the expected final relations according to the initial relations and the modifications of topographic data between the initial and the final state. The thematic data are then re-located using a multi-criteria method in order to satisfy, as much as possible, the expected relations. An implementation is presented on toy problems and on a real use case provided by a French public authority in charge of road network management. The extension of the proposed model to take into account the relations for other applications than thematic data migration is also discussed
44

Referenciação e retextualização no ensino de língua portuguesa

Felício, Heloisa 21 December 2009 (has links)
Made available in DSpace on 2016-04-28T19:34:43Z (GMT). No. of bitstreams: 1 Heloisa Felicio.pdf: 2545424 bytes, checksum: 8343a4554c093ccf5ef8e7ed98618979 (MD5) Previous issue date: 2009-12-21 / Secretaria da Educação do Estado de São Paulo / In this research work, we have as theme the Referencing and our intention is to verify how occurs the process of introduction and resumption / maintenance of referencing textual in rewritten texts produced by students at the Middle School of a public school in the city of Mogi Guaçu, São Paulo state. The research is in Linguistics Textual field and it is justified by the significance of this theme, mostly by the context of the education for text production by Portuguese Language that values discursive and pragmatic dimension of written language. Thinking about the objective of the research, we selected a corpus composed by five rewritten stories of Machado de Assis tale called The wallet , and we compared how the referencing is introduced and maintained in the rewritten and the original story. The results show that in the rewritten stories, after introduced the referencing, the students maintained it mostly using the repetition of this referencing, or using pronouns, ellipse, and defined nominal expressions in order to guarantee the referencing progression and the text cohesion. Either in the original text or in the rewritten ones, the results point that the referencing are introduced mostly by names or by defined and undefined nominal expressions. Saying about the resumption and maintenance, the author of the original text uses the pronouns, the referencing repetitions, the ellipse, defined and undefined nominal expressions and indirect anaphora / Neste trabalho de pesquisa, temos por tema a referenciação e objetivamos verificar como ocorre o processo de introdução e de retomada/manutenção de referentes textuais em retextualizações produzidas por alunos no Ensino Fundamental II de uma escola pública da cidade de Mogi Guaçu SP. A pesquisa situa-se no campo da Linguística Textual e justifica-se devido à importância do tema, principalmente em um contexto de ensino de produção de texto em Língua Portuguesa que valorize a dimensão discursiva e pragmática da língua escrita. Tendo-se em vista o objetivo da pesquisa, selecionamos um corpus composto por cinco retextualizações elaboradas em relação a um conto de Machado de Assis e comparamos modos de constituição e de manutenção de referentes no texto-fonte e nas retextualizações selecionadas. Os resultados indicam que nas retextualizações os alunos, após introduzirem o referente, mantém-no em saliência predominantemente por meio de repetição, pronominalização, elipse e expressões nominais definidas, garantindo a progressão referencial e a coerência do texto. Tanto no texto-fonte como nas retextualizações, os resultados apontam que os referentes textuais são introduzidos principalmente por nomes próprios e por expressões nominais definidas e indefinidas. Quanto às retomadas, o autor do texto-fonte utiliza a pronominalização, a repetição de referentes, a elipse, expressões nominais definidas e indefinidas e anáfora indireta
45

Prise en compte des dépendances entre données thématiques utilisateur et données topographiques lors d’un changement de niveau de détail / Taking into account the dependences between user thematic data and topographic data when the level of detail is changed

Jaara, Kusay 10 March 2015 (has links)
Avec l'importante disponibilité de données topographiques de référence, la création des données géographiques n'est plus réservée aux professionnels de l'information géographique. De plus en plus d'utilisateurs saisissent leurs propres données, que nous appelons données thématiques, en s'appuyant sur ces données de référence qui jouent alors le rôle de données support. Les données thématiques ainsi saisies font sens en tant que telles, mais surtout de par leurs relations avec les données topographiques. La non prise en compte des relations entre données thématiques et topographiques lors de traitements modifiant les unes ou les autres peut engendrer des incohérences, notamment pour les traitements liés au changement de niveau de détail. L'objectif de la thèse est de définir une méthodologie pour préserver la cohérence entre les données thématiques et topographiques lors d'un changement de niveau de détail. Nous nous concentrons sur l'adaptation des données thématiques suite à une modification des données topographiques, processus que nous appelons migration des données thématiques. Nous proposons d'abord un modèle pour la migration de données thématiques ponctuelles sur réseau composé de : (1) un modèle pour décrire le référencement des données thématiques sur les données topographiques par des relations spatiales (2) une méthode de relocalisation basée sur ces relations. L'approche consiste à identifier les relations finales attendues en fonction des relations initiales et des changements sur les données topographiques entre les états initial et final. La relocalisation est alors effectuée grâce à une méthode multicritère de manière à respecter au mieux les relations attendues. Une mise en œuvre est présentée sur des cas d'étude jouets et sur un cas réel fourni par un service de l'Etat gestionnaire de réseau routier. Nous discutons enfin l'extension du modèle proposé pour traiter la prise en compte des relations pour d'autres applications que la migration de données thématiques / With the large availability of reference topographic data, creating geographic data is not exclusive to experts of geographic information any more. More and more users rely on reference data to create their own data, hereafter called thematic data. Reference data then play the role of support for thematic data. Thematic data make sense by themselves, but even more by their relations with topographic data. Not taking into account the relations between thematic and topographic data during processes that modify the former or the latter may cause inconsistencies, especially for processes that are related to changing the level of detail. The objective of this thesis is to define a methodology to preserve the consistency between thematic and topographic when the level of detail is modified. This thesis focuses on the adaptation of thematic data after a modification of topographic data: we call this process thematic data migration. We first propose a model for the migration of punctual thematic data hosted by a network. This model is composed of: (1) a model to describe the referencing of thematic data on topographic data using spatial relations (2) a method to re-locate thematic data based on these relations. The approach consists in identifying the expected final relations according to the initial relations and the modifications of topographic data between the initial and the final state. The thematic data are then re-located using a multi-criteria method in order to satisfy, as much as possible, the expected relations. An implementation is presented on toy problems and on a real use case provided by a French public authority in charge of road network management. The extension of the proposed model to take into account the relations for other applications than thematic data migration is also discussed
46

An investigation of spatial strategy in observational drawing

Whale, George A. January 2006 (has links)
No description available.
47

Sistema de integração lavoura-pecuária : desempenho de novilhos superprecoces e variabilidade espacial do pasto / An integrated crop livestock system: performance of early finished beef steers and sward spatial variability

Wesp, Cristiane de Lima January 2010 (has links)
A introdução de bovinos em pastejo em áreas destinadas ao cultivo de culturas de grãos possibilita maximização de renda no sistema, contribuindo para o benefício da cultura em sucessão, quando a intensidade de pastejo é manejada adequadamente. O objetivo deste trabalho foi avaliar em um sistema de integração lavoura-pecuária, os efeitos de diferentes intensidades de pastejo, em função de quatro alturas de manejo de uma pastagem de aveiapreta e azevém anual em sucessão à cultura da soja, bem como, a influência dessas alturas sobre o desempenho animal, a variabilidade espacial do pasto e a resistência mecânica do solo à penetração. Os tratamentos consistiram das alturas de manejo de pasto de 10, 20, 30 e 40 cm; e de um tratamento sem pastejo (SP). A coleta de dados realizou-se entre julho e novembro de 2008, no município de Tupanciretã, RS, Brasil. Foram utilizados novilhos de corte, provenientes de cruzamento entre as raças Angus, Hereford e Nelore, com peso médio inicial de 203 ± 1,7 kg. Esses foram distribuídos em um delineamento experimental de blocos completos ao acaso, com três repetições, onde permaneceram em pastejo por 122 dias. As alturas médias reais, encontradas para os cinco tratamentos avaliados, corresponderam a 14,1; 22,6; 32,0; 41,1 e 45,0 cm, respectivamente. As variáveis massa de forragem, oferta de forragem e palhada residual responderam de maneira positiva e linear ao incremento da altura do pasto (P≤0,0001). O desempenho individual, o peso vivo ao abate e as características de carcaça dos novilhos apresentaram resposta quadrática, e foram otimizadas em alturas de manejo do pasto próximas a 30 cm (P≤0,0305). As menores alturas de manejo proporcionaram maiores ganhos por área, em função da maior carga animal utilizada. A presença de animais em pastejo proporcionou variabilidade espacial de alturas ao final do ciclo de utilização da pastagem. O mesmo foi observado para a resistência mecânica do solo à penetração, principalmente, nas camadas superciais do solo. Os valores de resistência evidenciaram os efeitos do pastejo até a profundidade de 0,20 m, sendo esses crescentes com o aumento das intensidades de pastejo impostas. Os resultados demonstram que alturas próximas a 30 cm permitem maiores ganhos individuais, em função do aumento da quantidade de forragem disponível por animal, não havendo comprometimento da palhada residual destinada à cultura subseqüente nesses casos, nem dos atributos físicos do solo avaliados. / The introduction of cattle into areas destined for grain crop production enables maximizing income from the system and can benefit the subsequent grain crop provided grazing intensity is managed properly. The objective of this study was to evaluate the effects of different grazing intensities on animal performance, sward spatial variability and soil penetration resistance within in a crop-livestock system. The treatments consisted of four grazing sward heights, 10, 20, 30 and 40 cm, and no grazing (NG), in a sward of black oat and annual ryegrass grown in succession with soybean. The study was conducted from May to November 2008, near Tupanciretã, RS, Brasil. Beef steers (Angus x Hereford x Nellore) with average initial weight of 203 ± 1.7 kg were distributed in a randomized complete block design, with three replications, where they grazed for 122 days. The observed average sward heights for the five treatments were 14.1; 22.6; 32.0; 41.1 and 45.0 cm, respectively. Herbage mass, herbage allowance and residual straw responded positively and linearly to increasing sward heights (P≤0.0001). Average daily gain, slaughter live weight, and carcass characteristics of the steers showed a quadratic response and were optimal in the 30 cm sward height treatment (P≤0.0305). The shorter sward heights provided higher total animal gain per area, due to the associated higher stocking rates. The presence of grazing animals resulted in spatial variability of sward heights at the end of the grazing cycle. The same was observed for soil penetration resistance, particularly in the surface layers of the soil. The soil penetration resistance showed the effect of animal traffic to a depth of 0.20 m, which increased with increasing grazing intensities. The results suggest that maintaining grazed sward heights near 30 cm provides better individual animal gains by the increasing amount of forage available per animal, while not compromising the residual straw remaining for the subsequent grain crop and without inducing excessive soil compaction.
48

Os processos dêiticos no discurso literário / The deitcs process in literary speech

Pinheiro, Joana D'arc Oliveira Cruz January 2008 (has links)
PINHEIRO, Joana D'arc Oliveira Cruz. Os processos dêiticos no discurso literário. 2008, 103f. Dissertação (Mestrado em Linguística) – Universidade Federal do Ceará, Departamento de Letras Vernáculas, Programa de Pós-Graduação em Linguística, Fortaleza-CE, 2008. / Submitted by nazareno mesquita (nazagon36@yahoo.com.br) on 2012-08-23T12:34:51Z No. of bitstreams: 1 2008_Diss_JDOCruz.pdf: 612512 bytes, checksum: f4cc82da7d6b96275f73601dbdb135fc (MD5) / Approved for entry into archive by Maria Josineide Góis(josineide@ufc.br) on 2013-10-10T11:40:43Z (GMT) No. of bitstreams: 1 2008_Diss_JDOCruz.pdf: 612512 bytes, checksum: f4cc82da7d6b96275f73601dbdb135fc (MD5) / Made available in DSpace on 2013-10-10T11:40:43Z (GMT). No. of bitstreams: 1 2008_Diss_JDOCruz.pdf: 612512 bytes, checksum: f4cc82da7d6b96275f73601dbdb135fc (MD5) Previous issue date: 2008 / This dissertation presents a critical review of a studies in the area of deitics processes and a reflection about its characteristics joint of Text Linguistic. For this, we decided to observe the deitc behavior in the literary discourse because it uses the language of a specific form and it explores its stylistics effects. We propose that, when we consider the specific by literary text, we can obtain a different classification about deitics elements, something still no studied for the literature about the subject. Because this specificity, we use the concepts by Literature Theory and French Analyze of Discourse. In ours analysis, we observed that the different spoke instances presents in the literary texts and the stylistics effects by this discourse can to make a no deitc expression becomes a deitc expression. We observe this after an analysis of 20 stories by 10 Moderns and Contemporaries Brazilian writers. Our analysis has as focus the function and no the form of deitics, but the form was not ignored. We certificated, besides the expressions that are deitics only in the literary text, others expressions are deitics only in a spoke instance. The results still show that there is a relationship between some deitics and some stylistics effects. / Esta pesquisa apresenta uma revisão crítica sobre os processos dêiticos e uma reflexão sobre seus parâmetros definidores embasados na Lingüística Textual. Para isso, resolvemos observar o comportamento dos dêiticos no discurso literário, por considerá-lo peculiar no uso da linguagem e na exploração de suas possibilidades estilísticas. Nosso propósito é mostrar que, ao considerarmos a especificidade do texto literário, podem ser identificadas algumas funções distintas das que foram até então apresentadas pela literatura sobre o assunto. Para isso, valemo-nos de conceitos da Teoria Literária e da Análise do Discurso Francesa. Em nossa análise, verificamos que as diferentes instâncias enunciativas presentes nos textos literários e os efeitos estilísticos pretendidos por este tipo de discurso podem dotar de deiticidade uma expressão que não seria comumente classificada como dêitica. Estas observações se deram após a análise de 20 contos de 10 autores da literatura brasileira moderna e contemporânea. Nossa análise teve como foco a função e não a forma dos dêiticos, embora esta última não tenha sido ignorada. Descrevemos, além de expressões que só são dêiticas no texto literário, outras que funcionam como dêiticas em apenas uma das três instâncias enunciativas. Os resultados mostram também a relação existente entre alguns tipos de dêiticos e certos efeitos estilísticos.
49

As funções discursivas das recategorizações / Discourse functions of the recategorizations

Matos, Janaica Gomes January 2005 (has links)
MATOS, Janaica Gomes. As funções discursivas das recategorizações. 2005. 146f. Dissertação (Mestrado em Linguística) – Universidade Federal do Ceará, Departamento de Letras Vernáculas, Programa de Pós-Graduação em Linguística, Fortaleza-CE, 2005. / Submitted by nazareno mesquita (nazagon36@yahoo.com.br) on 2012-08-21T12:50:44Z No. of bitstreams: 1 2005_Diss_JGMatos.pdf: 603714 bytes, checksum: 9e1a278f4ff233860cffd9a69bb52d1a (MD5) / Approved for entry into archive by Maria Josineide Góis(josineide@ufc.br) on 2013-11-14T12:24:47Z (GMT) No. of bitstreams: 1 2005_Diss_JGMatos.pdf: 603714 bytes, checksum: 9e1a278f4ff233860cffd9a69bb52d1a (MD5) / Made available in DSpace on 2013-11-14T12:24:47Z (GMT). No. of bitstreams: 1 2005_Diss_JGMatos.pdf: 603714 bytes, checksum: 9e1a278f4ff233860cffd9a69bb52d1a (MD5) Previous issue date: 2005 / This dissertation has as a goal the analysis of the discourse functions of the recategorizations. This research was delimited to the analysis of the occurred lexical recategorizations through direct co-referential anaphoras. We adopt the theoretical perspective of that the searched phenomenon is placed in the activity discourse of referencing, conceived as a (re) construction of the reality, happened of the interaction between the speakers, in a intersubjective way. We proposed one classification of the possible functions assumed for the recategorizations in different discourse contexts. For such end, we approached, initially, the classifying proposal by Cavalcante (2003) about referential expressions, that has been used as a base of our functional proposal about recategorizations. From this, we retook the pioneer analysis by Apothéloz and Reichler-Béguelin (1995) about recategorizations, and we discussed the works by Tavares (2003) and Lima (2003), based on the two authors. We contemplated, basically, the suggestion by Koch (2004) about cognitive and discourse functions of the lexical referential expressions; in our proposal about recategorizations. Our corpus consisted of 80 texts was taken from different genres: 62 of them were chosen casually. Another part belongs to the bank of data of Protexto/UFC group studies. With the analysis of the data, we inquired functional traces of the recategorizations, that had come to compose our classification and it had taken us to evidence that recategorizations can be multi-functional in the speeches. (219 words) / Esta dissertação possui como escopo a análise das funções discursivas das recategorizações. Este trabalho restringe-se à análise das recategorizações lexicais ocorridas por meio de anáforas diretas, correferenciais. Adotamos a perspectiva teórica de que o fenômeno pesquisado situa-se na atividade discursiva de referenciação, concebida como uma (re)construção do real, advinda da interação entre os falantes, de forma intersubjetiva. Propomos uma classificação das possíveis funções assumidas pelas recategorizações nos diferentes contextos discursivos. Para tal fim, abordamos, inicialmente, a proposta classificatória de Cavalcante (2003) dos processos referenciais, entre os quais estão inseridas as recategorizações. A partir disso, retomamos a análise pioneira de Apothéloz e Reichler-Béguelin (1995) sobre as recategorizações, bem como discutimos os trabalhos de Tavares (2003) e de Lima (2003), que se baseiam nos dois autores. Contemplamos, fundamentalmente, a sugestão de Koch (2004) sobre as funções cognitivo-discursivas das expressões nominais referenciais, que serviram de parâmetro para nossa proposta de funções das recategorizações. Nosso corpus consta de 80 textos de diversos gêneros: destes, 62 textos foram por nós escolhidos aleatoriamente; a outra parte da amostra é pertencente ao banco de dados do grupo de estudos Protexto/UFC. Com a análise dos dados, averiguamos traços funcionais das recategorizações, que vieram a compor nossa classificação e nos levaram a constatar que as recategorizações podem ser multifuncionais nos discursos. (213 palavras)
50

Sistema de integração lavoura-pecuária : desempenho de novilhos superprecoces e variabilidade espacial do pasto / An integrated crop livestock system: performance of early finished beef steers and sward spatial variability

Wesp, Cristiane de Lima January 2010 (has links)
A introdução de bovinos em pastejo em áreas destinadas ao cultivo de culturas de grãos possibilita maximização de renda no sistema, contribuindo para o benefício da cultura em sucessão, quando a intensidade de pastejo é manejada adequadamente. O objetivo deste trabalho foi avaliar em um sistema de integração lavoura-pecuária, os efeitos de diferentes intensidades de pastejo, em função de quatro alturas de manejo de uma pastagem de aveiapreta e azevém anual em sucessão à cultura da soja, bem como, a influência dessas alturas sobre o desempenho animal, a variabilidade espacial do pasto e a resistência mecânica do solo à penetração. Os tratamentos consistiram das alturas de manejo de pasto de 10, 20, 30 e 40 cm; e de um tratamento sem pastejo (SP). A coleta de dados realizou-se entre julho e novembro de 2008, no município de Tupanciretã, RS, Brasil. Foram utilizados novilhos de corte, provenientes de cruzamento entre as raças Angus, Hereford e Nelore, com peso médio inicial de 203 ± 1,7 kg. Esses foram distribuídos em um delineamento experimental de blocos completos ao acaso, com três repetições, onde permaneceram em pastejo por 122 dias. As alturas médias reais, encontradas para os cinco tratamentos avaliados, corresponderam a 14,1; 22,6; 32,0; 41,1 e 45,0 cm, respectivamente. As variáveis massa de forragem, oferta de forragem e palhada residual responderam de maneira positiva e linear ao incremento da altura do pasto (P≤0,0001). O desempenho individual, o peso vivo ao abate e as características de carcaça dos novilhos apresentaram resposta quadrática, e foram otimizadas em alturas de manejo do pasto próximas a 30 cm (P≤0,0305). As menores alturas de manejo proporcionaram maiores ganhos por área, em função da maior carga animal utilizada. A presença de animais em pastejo proporcionou variabilidade espacial de alturas ao final do ciclo de utilização da pastagem. O mesmo foi observado para a resistência mecânica do solo à penetração, principalmente, nas camadas superciais do solo. Os valores de resistência evidenciaram os efeitos do pastejo até a profundidade de 0,20 m, sendo esses crescentes com o aumento das intensidades de pastejo impostas. Os resultados demonstram que alturas próximas a 30 cm permitem maiores ganhos individuais, em função do aumento da quantidade de forragem disponível por animal, não havendo comprometimento da palhada residual destinada à cultura subseqüente nesses casos, nem dos atributos físicos do solo avaliados. / The introduction of cattle into areas destined for grain crop production enables maximizing income from the system and can benefit the subsequent grain crop provided grazing intensity is managed properly. The objective of this study was to evaluate the effects of different grazing intensities on animal performance, sward spatial variability and soil penetration resistance within in a crop-livestock system. The treatments consisted of four grazing sward heights, 10, 20, 30 and 40 cm, and no grazing (NG), in a sward of black oat and annual ryegrass grown in succession with soybean. The study was conducted from May to November 2008, near Tupanciretã, RS, Brasil. Beef steers (Angus x Hereford x Nellore) with average initial weight of 203 ± 1.7 kg were distributed in a randomized complete block design, with three replications, where they grazed for 122 days. The observed average sward heights for the five treatments were 14.1; 22.6; 32.0; 41.1 and 45.0 cm, respectively. Herbage mass, herbage allowance and residual straw responded positively and linearly to increasing sward heights (P≤0.0001). Average daily gain, slaughter live weight, and carcass characteristics of the steers showed a quadratic response and were optimal in the 30 cm sward height treatment (P≤0.0305). The shorter sward heights provided higher total animal gain per area, due to the associated higher stocking rates. The presence of grazing animals resulted in spatial variability of sward heights at the end of the grazing cycle. The same was observed for soil penetration resistance, particularly in the surface layers of the soil. The soil penetration resistance showed the effect of animal traffic to a depth of 0.20 m, which increased with increasing grazing intensities. The results suggest that maintaining grazed sward heights near 30 cm provides better individual animal gains by the increasing amount of forage available per animal, while not compromising the residual straw remaining for the subsequent grain crop and without inducing excessive soil compaction.

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