A presente dissertação de mestrado aborda o potencial poético da linguagem audiovisual na influência das relações que envolvem a questão da imagem, supostamente invisível, e acompanha reflexões suscitadas por inquietações sobre o ver e o não ver relacionadas à produção artística. Para tanto, o trabalho é dividido em três capítulos ao mesmo tempo independentes e complementares: IN - o invisível dentro do visível, SUB - o invisível abaixo do visível, e VISÍVEL - o invisível através do visível. / The present dissertation focus on the poetic potential of the audiovisual language involving the issue of allegedly invisible image and accompanying reflections prompted by concerns about seeing and not seeing related to the artistic production. Therefore, the work is divided into three chapters at the same time independent and complementary: IN - the invisible within the visible, SUB - the invisible below visible, and VISIBLE - the invisible through the visible.

O nitrogênio é um dos nutrientes mais importante para o desenvolvimento vegetal e o mais aplicado em diversos cultivos agrícolas. Dentre as fontes nitrogenadas disponíveis, a ureia se destaca pela alta concentração de nitrogênio que remete a diversas vantagens econômicas e operacionais no sistema de produção agrícola. Porém, além da alta propensão a perdas, principalmente por volatilização do gás amônia, tem-se a necessidade do aumento da produtividade de modo ao suprimento da demanda crescente de alimentos, fibras e energia. Considerando estes fatores, uma nova vertente de pesquisa está voltada a aplicação de tecnologias à ureia, os fertilizantes com tecnologia agregada, estes vêm se destacando e disponibilizando alternativas de novos produtos no mercado. Com base no exposto, buscou-se elucidar os seguintes questionamentos: As novas tecnologias aplicadas a ureia possibilitam a redução de perdas por volatilização? As novas tecnologias aplicadas a ureia modificam suas transformações inorgânicas e orgânicas no solo e, em caso de modificação, estas são positivas? O uso de tecnologias aplicadas à ureia reflete em maior longevidade na liberação do nutriente ao solo e, em caso positivo, esta longevidade é vantajosa? A combinação entre produtos de ureia convencional e com tecnologia agregada, pode trazer mais benefícios à cultura do milho do que a aplicação destes isoladamente? A substituição do uso/aplicação da ureia em sua forma tradicional pela ureia com tecnologia agregada, na cultura do milho, é viável economicamente ao produtor? Para responder a estes questionamentos, foram conduzidos três experimentos: análise das frações do nitrogênio provenientes da ureia com inibidores de urease; caracterização da dinâmica de liberação e longevidade de fertilizantes recobertos com polímero e enxofre e; análise da produtividade da cultura do milho submetida a adubação com ureia recoberta com polímero e enxofre. O primeiro experimento permitiu concluir que o uso dos inibidores de urease tem potencial para a redução das perdas por volatilização da amônia, foi possível verificar as transformações sofridas pelo nitrogênio desde a aplicação do grânulo até a disponibilidade das formas minerais, passando a incorporação do nutriente na matéria orgânica. No segundo experimento concluiu-se que os fertilizantes recobertos com polímero e enxofre possuem dinâmica exponencial de liberação, o recobrimento é dependente da temperatura, umidade do solo, tipo de material de recobrimento e processo de recobrimento (espessura), que afetam diretamente a liberação e longevidade destes fertilizantes. O último experimento mostrou que uso dos fertilizantes recobertos com polímero e enxofre aumenta a produtividade, os parâmetros biométricos, os parâmetros nutricionais e a qualidade do grão da cultura do milho. As combinações realizadas entre os produtos recobertos com a ureia convencional são alternativas para o aumento da produtividade resultando em valores superiores a aplicação dos insumos de forma isolada. A combinações de produtos recobertos com a ureia convencional é opção para a redução do investimento e, consequentemente, custo de produção resultante da adoção destas novas tecnologias. / Nitrogen is one of the most important nutrient for plant development and the most applied nutrient in several agricultural crops. Among the available nitrogen sources, urea differ due to the high concentration of nitrogen that result to several economic and operational advantages in the agricultural production system. However, in addition to the high propensity for losses, mainly due to the ammonia volatilization, the need to increase yield in order to supply the growing demand for food, fiber and energy emerge. Considering these factors, a new research area is focused to aggregate technologies to the urea, they call fertilizers with aggregate technology, this type of fertilizers emerges and brings new alternatives about new products available in the market. Based on the above, it was tried to answer the following questions: Does the new technologies applied to urea fertilizer enable the reduction of losses by volatilization? The new technologies applied to urea modify their inorganic and organic transformations in the soil and, if modified, are these positive? Does the use of technologies applied to urea reflect in a longer longevity in the release of the nutrient to the soil and, if so, is this longevity advantageous? Can the combination of conventional urea and aggregate technology products brings more benefits to cons than the application of these alone? Is the substitution of urea in its traditional form by urea with aggregate technology in the maize crop economically viable to the producer? In order to answer these questions, three experiments were conducted: analysis of nitrogen fractions from urea and urea mixed with inhibitors; Dynamics of release and longevity of polymer sulfurcoated fertilizers; Analysis of maize yield submitted to fertilization with polymer and sulfur coated urea. The first experiment allowed concluding that the use of the urea inhibitors has potential to reduce losses by ammonia volatilization, it was possible to verify all the changes undergone by the nitrogen fertilization since the granule until the availability of the mineral forms, including the immobilization of the nutrient in organic matter. In the second experiment, it was concluded that the polymer and sulfur coated fertilizers have exponential dynamics of release, the coating depends on the temperature, soil moisture, type of coating material and coating process (thickness), which directly affects the release and longevity of these fertilizers. The last experiment showed that the use of the coated fertilizers with polymer and sulfur increases the yield, the biometric parameters, the leaf concentration and the quality of grain to the maize crop. The combinations performed between the coated products with conventional urea are alternatives for increasing the yield resulting in higher application values of the inputs in an isolated way. Combinations of coated products with conventional urea is an alternative to reduce investment and consequently the production costs, it will result the adoption of these new technologies.

Made available in DSpace on 2017-07-10T17:37:18Z (GMT). No. of bitstreams: 1 Marcelo Junior Lang.pdf: 294028 bytes, checksum: 68eb45f2b34a4c62de958080bd5a8ab5 (MD5) Previous issue date: 2007-08-25 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This study aimed to test the effects of fertilizing and containers in the production and initial growth of canafístula and angico seedlings. Seeds were sowed in September, 2005 in a protected area of Universidade Estadual do Oeste do Paraná, county of Marechal Cândido Rondon.The experimental design was a casualty blocks. Treatment were constituted of using a slow release fertilizer (Bascote 3m), a formulation used by ESALQ, and common substract (testimony) in containers of 120cm3 and 180cm3. The experiment was conductedin a nursery with five evaluations with intervals of20 days, and 4 field evaluations, three with 30 days intervals, and the fourth one year after planting.Measured variables in the nursery phase included: length, diameter, leaf area and dry mass , stem dry mass, root dry mass, above ground dry mass, root/shoot ratio, total dry mass and DICKSON s index. In the field, measured variables were: length, diameter and survival. In nursery, fertilizer and evaluation were the main causes of variations for angico seedlings. For canafístula seedlings fertilizier and container volume were causes of variation. Angico seedlings fertilized with Basacote resulted in 1.149 g, 0.806g with Esalq s formulation while the control seedlings weight increase was 0.657g of total dry mass; for canafistula seedlings the total dry mass increase were 1.155g with Basacote, 0.557 g with Esalq s formulation, and 0,492g for the control seedlings. It was observed that 80 days after emergence absolute growth index od seedlings decreased. Thirty days after planting,angico seedlings fertilized with Basacote presented length increase of 32.80 cm, with Esalq s formulation 23.04 cm, and the control seedlings 16.28cm. The increase of length expressed by canafístula seedlings was 28.05 cm with Basacote, 23.18cm with Esalq s formulation, and 17.16 cm with the contro seedlings.There are no effects from fertilizers in seedlings from small containers (i.e.120 cm3) 30 days after planting. Seedlings producedwith slow release fertilizer can be outplanted 20 days earlier than seedlings produced with other form of fertilization / Este trabalho objetivou testar os efeitos de tipos de adubação e recipientes na produção e crescimento inicial de mudas. Sementes de angico e canafístula foram semeadas em setembro de 2005 na área de cultivo protegido da Universidade Estadual do Oeste do Paraná no município de Marechal Cândido Rondon. O delineamento experimental usado foi o de blocos casualizados. Os tratamentos constituíram-se da utilização de um fertilizante de liberação lenta (Basacote 3m), uma formulação de pronta disponibilidade utilizada pela ESALQ, e substrato paltmax (testemunha) em tubetes com volumes de 120cm3 ou 180cm3. O experimento foi desenvolvido no viveiro com cinco avaliações a cada 20 dias, e de campo com quatro avaliações, três delas a intervalos de 30 dias a partir do plantio e a quarta avaliação um ano após do plantio. As variáveis analisadas na fase de viveiro foram: comprimento, diâmetro, área foliar, massa seca de folhas, massa seca de caule, massa seca de raiz, massa seca da parte aérea, razão raiz parte aérea, massa seca total e índice de DICKSON. No campo, as variáveis analisadas foram: comprimento, diâmetro e sobrevivência. Em viveiro, a adubação juntamente com as avaliações foram as principais causas de variações em mudas de angico. Para as mudas de canafístula além das adubações e avaliações, os tubetes também foram causas de variação. Em mudas de angico fertilizadas com Basacote expressaram em incremento de 1.149 mg, formulação da Esalq 806 mg e testemunha 657 mg de massa seca total, enquanto que para mudas de canafístula os ganhos de massa seca total foram 1.155 mg com Basacote, 557 mg com formulação Esalq e 429 mg nas mudas testemunha. Observou-se que a partir dos 80 dias após a emergência as mudas diminuem a taxa de crescimento absoluto. Aos 30 dias à campo as mudas de angico adubadas com Basacote apresentaram incremento em comprimento de 32,80cm, a formulação da Esalq 23,04cm, e a testemunha 16,28cm. Os incrementos nas mudas de canafístula foram de 28,05cm para Basacote, 23,18cm com a formulação da Esalq e 17,16cm com as mudas testemunha. A sobrevivência pós-plantio sob as condições do ensaio não sofreu efeitos dos tratamentos testados. A influência da adição de fertilizantes e dos recipientes na formação das mudas não foi detectada nas avaliações posteriores ao primeiro mês após o plantio. Mudas adubadas com fertilizante de liberação lenta podem ser plantadas à campo 20 dias antes que para as demais adubações

The inflationary paradigm is one which was designed to answer questions that arose from classical Hot Big Bang cosmology. The period of rapid expansion in the early Universe provides a mechanism to solve the flatness, horizon and relic problems. More importantly, since the theory was first introduced it has been realised that it also provides a mechanism to generate the initial perturbations from which structure in the Universe can grow. In the zoo of potential inflationary models there is a dominant class: slow-roll inflation. The idea that the energy density of the inflationary field is dominated by its potential highly simplifies the calculations required to predict observable quantities. This simplification relies on all the information required to know the subsequent dynamics of the field to be encoded in the space Φ-Φ̇; it must be an effective phase space. I show that Φ-Φ̇ can be considered to be such a space for the most general scalar-tensor theory which gives second-order equations of motion: Horndeski theory. There are theoretical issues associated with this reduction that are illuminated through specific examples in which they occur. A theoretical issue with inflation is that there is an overabundance of models, with some capable of predicting any value of the possible observables. The second block of work in this thesis looks at a particular set of models that make the same observational prediction. These 'attractor' models utilise a non-minimal coupling between the inflationary fields and gravity and are studied in depth, both in the case of one and several fields. Firstly, I examine the Universal Attractors, a single field subset of these models. I show, in detail, the observational prediction such a model makes in the case of a strong non-minimal coupling and then examine the constraints it would be possible to put on such a coupling if a confirmed detection of primordial gravitational waves was made. Despite the discussion existing in the literature there is a small deviation of the Universal Attractor models from the predictions of the Starobinsky model. Furthermore, the coupling, ξ is found to be constrained so that |ξ| < 1 in the case where there a level of detectable primordial tensor modes. While the attractor models have an effective one-field description in reality there are several other fields that are assumed to be fixed during the inflationary phase. This claim requires careful examination as the field-space of the models generally is not flat. This curvature can cause a destabilising effect with certain parameters and so I investigate how susceptible the α-attractors and related models are to the destabilisation. A key result of this chapter is to highlight how important it is to not rely on the slow-roll approximation when assessing the effect of the instability, as the region where the effect begins to become large corresponds with the region where slow-roll begins to break down. Assuming the slow-roll approximation is valid leads to an over-estimation of the effect that the instability mechanism has. Despite this, some of the models considered are seen to experience the instability for certain ranges of model parameters. Making the assumption that any occurrence of the instability will, at the very least, move the observational prediction of the model outside the currently constrained range allows a constraint on the model parameter in question which directly translates to a theoretical lower bound on the tensor-scalar ratio, r > 0.0005.

My work focused on the development of improved methodologies for the evaluation of seismic hazard and its related uncertainties, based on the study of active faults systems and dynamic modelling of the seismic cycle. I worked in particular on the probabilistic estimate of a fault's maximum magnitude earthquake and of its return period. Those parameters are indeed crucial to estimate seismic hazard. Seismicity can be viewed as a stochastic process which is constrained by the principle of moment conservation: seismic ruptures must in principle rupture fault portions which had accumulated a deficit of slip, in view of their long term slip rate, during the interseismic period. In Chapter 1, I explain how we implemented those constraints in the evaluation of the probability distribution describing the magnitude and return period of the largest earthquake, propagating the geodetic uncertainties up to the hazard calculation. We applied this methodology to the Parkfield Segment of the San Andreas Fault, where the seismic cycle is particularly well documented. Our study implies potential maximum magnitude between 6.5 and 7.5, with a return period of 140 to 300 years. In Chapter 2, we applied the same methodology to the Cascadia subduction zone, known to have produced a M~9 earthquake in 1700 but where the seismic hazard remains poorly constrained. As part of this study we determined a model of interseismic coupling and of fault slip due to Slow Slip Events using an Independent Component Analysis-based inversion method. Finally, in Chapter 3, I use dynamic modelling to tackle the problem of partial ruptures. Large earthquakes tend to be confined to fault areas locked in the interseismic period but they often rupture them only partially. For example, during the 2015 M7.8 Gorkha earthquake, Nepal, a slip pulse propagating along-strike unzipped the bottom edge of the locked portion of the Main Himalayan Thrust. The lower edge of the rupture produced dominant high-frequency (>1 Hz) radiation of seismic waves. We showed that similar partial ruptures occur spontaneously in a simple dynamic model of earthquake sequences on a planar fault without mechanical, frictional and geometrical heterogeneities.

This study was part of the Portland Language Development Project, a longitudinal study of early expressive language delay. Its purpose was twofold. The first was to examine phonological and reading abilities in second grade children with a history of language delay. The second purpose was to examine the relationship between phonological processing abi1ities and reading skills in these children. Second grade children were assigned to one of three groups, based on their history and current Development Sentence Score (DSS) score: (a) normal language (NL), those with more than 50 words at 20-34 months and above the tenth percentile on the DSS; (b) history of delay, but currently normal expressive language (HX), those with fewer than 50 words at 20-34 months and above the tenth percentile on the DSS; and (c) history of delay with continued performance below normal (ELD), those with fewer than 50 words at 20-34 months and below the tenth percentile on the DSS. The children were evaluated by means of the Reading Recognition and Reading Comprehension subtests of the Peabody Individual Achievement Test (Dunn & Mackwardt, 1970), three complex phonological production tasks, and the Lindamood Auditory Conceptualization Test (LAC) (Lindamood & Lindamood, 1979), which assesses phonological awareness. This study compared the reading and phonologica1 scores of the three groups to determine if there are any significant differences. The results showed no significant differences in reading abilities. There were significant differences on the complex phonological task of naming pictures, between the NL and HX group, and there were significant differences on the LAC, between the NL group and the ELD group, and between the HX group and the ELD group. Reading and phonological scores of the children with a history of late talking were correlated, using a regression analysis to determine whether reading recognition and reading comprehension could be predicted from the phonological production and LAC tasks. The LAC was the only variable that correlated with the Reading Recognition or Reading Comprehension subtests. The LAC accounted for 39% of variance of the Reading Recognition score, and 27% of the variance of the Reading Comprehension score.

Language delay and phonological delay have been shown to coexist. Because they so often co-occur, it is possible that they may interact, sharing a relationship during the child's development. A group of children who were "late talkers" as toddlers, achieved normal development in their syntactic ability by the preschool period. Because their language abilities are known to have increased rapidly, data on their phonological development could provide information on the relationship between phonological and syntactic development. The purpose of this study was to compare the percentage of phonological process usage of the eight most commonly used simplification processes in four-year-old expressive language delayed (ELD) children, children with a history of slow expressive language development (HX), and normally developing (ND) children. The questions this study sought to answer were: do ELD children exhibit a higher percentage of phonological process usage than ND children, and are HX children significantly different in their percentage of phonological process usage than ND and/or ELD children.

Proficiency in various higher level language skills is necessary to integrate and organize units of meaning beyond the sentence level. Examining narratives has become a useful tool for assessing these language abilities. Narrative skills are considered by many researchers to be a strong link between oral language and literacy, and related to academic performance (Westby, 1991; Roth & Spekman, 1991). The present study was part of the Portland Language Development Project, a longitudinal study of early language delay. The purpose of this study was to assess higher level language abilities by examining the stories of 6-year-olds with normal, impaired, and late developing oral language. The specific objective was to determine whether there were differences on 9 measures of narrative skill in first graders that could be related to their pattern of language acquisition. The original group size was 24 children with normal expressive vocabulary size at age 20-34 months, and 30 children whose expressive vocabulary size fell below the normal range at 20-34 months referred to as "late talkers." These two groups of children were re-evaluated when in first grade. Each child was audiotaped producing a narrative and a spontaneous language sample. The Bus Story (Renfrew, 1977), a story retelling procedure, was administered for the narrative measure. When the spontaneous, conversational language samples were scored for syntactic complexity with Lee's (1974) Developmental Sentence Score (DSS), 22 (73°/o) of the original L T had scores in the normal range and were reclassified as "History of Expressive Language Delay" (Hx). The remaining 8 (27°/o) who continued to fall below the normal range were now classified as "Expressive Language Delayed" (ELD). The narrations produced by all of the children were scored on nine measures: narration length in T-units, mean length perT-unit in morphemes, type-token ratio, average number of morphemes in the five longest sentences, information retold, lexical richness, cohesion, percentage of new propositions produced, and narrative stage assignment. No significant differences were found among the three diagnostic groups on the following seven measures: narration length in T-units, mean length perT-unit in morphemes, type-token ration, information retold, lexical richness, cohesion, or percentage of new propositions produced. Significant differences were found among groups on the average number of morphemes in the five longest sentences. Both the normal group and the Hx group scored significantly higher than the ELD group. Significant differences were found between the normal group and both the Hx group and the ELD group on the measure of narrative stage assignment. The present study suggested that children with early language delay appear to "catch up" with normal peers in most areas of narrative ability by age 6. Of the variables examined in this study, the production of an overall mature narrative was the primary deficit noted in children with a history of expressive language delay. Language intervention should focus not only on morphology and syntax, but also on basic story grammar knowledge. Children with an expressive language delay as well as children with a history of language delay may need additional teaching and training of narrative skills in order to succeed with literacy.

Beginning at birth, a child's receptive and expressive language skills are developing in stages. Likewise, the child's socialization skills are progressing in stages. However, it does not seem that communication and socialization are developing independently of each other. Rather, it seems that their development is interrelated.Children learn to speak in a social context, and social situations are necessary for the development of a variety of language structure~ On the same note, in order for those language structures to develop normally, it is necessary for the child to participate in different social situations. Social interactionists have theorized for some time that human language develops out of the social-communicative functions that language serves in human relations. Vygotsky (1962) theorized that language development, social development, and cognitive development all overlap. He stated that a child's social means of thought is language and referred to this as "verbal thought." This verbal thought process serves a major social function. It is through this verbal thought process that children have the ability to be socialized by others and to socialize with others: If, in fact,Expressive language skills and socialization skills do develop together, it would then seem logical that the child who is late to begin talking would also experience initial deficits in the development of socialization Subsequently, it would seem that the late-talking child (L T) who has persistent deficits in language would, in turn, maintain chronic deficits in socialization. Results of a study which set out to investigate the differences between two and three-year old subjects with a history of LT and their normal language peers indicated that subjects with a history of LT are, in fact, at risk for persistent delays in both expressive language and socialization (Paul, Spangle Looney, and Dahm, 1991). The purpose of this study was to compare the language and socialization skills of a group of five-year olds with a history of LT to a group of normal subjects of the same age. If significant differences were found between the two groups in either area, the scores of the subjects with a history of LT at age two would be correlated with their scores at age five to investigate whether a significant relationship existed between their scores at both ages. It was hypothesized that the subjects with a history of LTwould be at risk for longterm delays in both language and socialization. More specifically, the group of subjects with a history of LT, as a whole, would show significant delays in the areas of expressive language and socialization as compared to the normal controls. It was further hypothesized that the subjects with a history of LTs' scores at the age of two would reliably predict their scores at five, given a significant deficit in either area. The Vineland Adaptive Behavior Scales VABS (Sparrow, Balla, & Cicchetti, 1984) was the test instrument used to gather the data at both age levels, five years and two years. Parents of 25 subjects with a history of L T and 25 normal subjects were interviewed by a trained graduate researcher on their child's communication, daily living and socialization skills using the VABS. Results of an ANOVA and Tukey multiple comparisons indicated that the subjects with a history of LT, as a whole, scored significantly lower than the normal subjects in the areas of expressive communication and socialization at age five. Since a proportion of the test items in the socialization domain of the VABS require the child to verbalize, an item analysis between the verbal and the nonverbal test items was performed to determine the influence of the verbal test items on the subjects with a history of LTs' socialization scores. Results of the item-analysis indicated that the subjects with a history of L T's poor performance on the socialization scale was due to their deficits in social skills not their deficits in expressive language. Lastly, a Pearson Product Moment Correlational Test was conducted to investigate the relationship between the subjects with a history of LTs' scores at age two on the communication and the socialization scales and their scores at age five on the same scales. Results indicated that the subjects with a history of LTs' scores on both the socialization scale and the communication scale at age two correlated significantly with their scores on the socialization scale at age five. Therefore, the subjects with a history of LTs' socialization and communication scores at age two are good predictors of their adaptive social skills at the age of five.

While there is general agreement among researchers in the field of language and learning disabilities upon the language hypothesis for reading failure, little research has been explored concerning the relationship between the phonological production skills of preschool children and the same children's prereading abilities in kindergarten. This study examined two aspects of phonological skill (a) the relationship of early phonological production errors and later success on phonological awareness and general prereading skill, and (b) determining if prereading deficits in a group of children with a history of lanquage delay reside specifically in the phonological awareness items or the prereading score in general. The subjects used for this study included 29 "normal" talkers and 30 "late talkers", as determined by the Language Development survey (Rescorla, 1989) when the subjects were between 20-34 months. When the subjects were three years old, a language sample was obtained and later phonemically transcribed from audio tape and entered into the PEPPER computer program to compute the percentage consonants correct (PCC) for each child. The subjects were later evaluated during their kindergarten year for reading readiness, using the Developmental Skills Checklist. This study found that Late Talkers have significantly lower PCCs than there normal talking peers at age three, but their PCCs do not predict their prereading or phonological awareness skills at kindergarten. Phonological awareness was further investigated in terms of supraseqmental and segmental levels of phonological awareness, there was no significant difference between the groups on either level of phonological awareness. However, there was a nonsignificant trend (p