Uniformidade de deposição da calda de pulverização de herbicidas em barra lateral protegida com diferentes combinações de pontas de pulverização

O presente trabalho objetivou estudar a uniformidade de distribuição da calda de pulverização contendo herbicidas, em culturas perenes arbustivas, utilizando combinações de pontas de pulverização em barra lateral protegida, conduzida a pequena distância do alvo, na linha de culturas perenes arbustivas. Para isso, foi desenvolvido um programa computacional que permite simular a sobreposição do leque de pulverização, da porção protegida da barra e do leque formado pela ponta de pulverização do bico mais extremo da barra, de modo diferente dos demais programas. Após a seleção das melhores combinações de pontas de pulverização por meio de simulação dos padrões de deposição da pulverização das pontas individuais e dos coeficientes de variação menores que 10%, algumas dessas combinações foram testadas em campo, aplicando-se um herbicida sistêmico (glyphosate) e outro com ação de contato (paraquat). Os resultados indicaram que o programa computacional desenvolvido pode constituir-se em um auxiliar valioso para a seleção das melhores combinações de pontas de pulverização. em aplicações tanto do herbicida glyphosate quanto do paraquat, com volumes de calda mais reduzidos,abaixo de 100 L ha-1, destacaram-se como arranjos mais eficientes: a) pontas TT110015 distanciadas de 52,5 cm entre si, combinadas com a ponta TK-0,5 na extremidade da barra a 50 cm do último bico, operando na velocidade de 5 km h-1 e pressão de 103 kPa (15 lbf pol-2), com distância de caminhamento do tronco da árvore de 20 cm ; b) pontas SMCE2 distanciadas de 15 cm entre si, combinadas com a ponta TK-0,5 na extremidade da barra de 20 cm do último bico, operando na velocidade de 4 km h-1 e pressão de 414 kPa (60 lbf pol-2), com distância de caminhamento do tronco da árvore de 30 cm ; e c) pontas TLX-2 distanciadas de 15 cm entre si, combinadas com a ponta TK-0,5 na extremidade da barra de 20 cm do último bico, operando à velocidade de 5 km h-1 e pressão de 414 kPa (60 lbf pol-2), com distância de caminhamento do tronco da árvore de 30 cm. A velocidade de deslocamento do pulverizador de 5 km h-1 proporcionou melhores condições para que os herbicidas estudados apresentassem melhor controle de plantas daninhas, quando comparada com a velocidade de deslocamento do pulverizador de 4 km h-1.

Desenvolvimento e políticas públicas: uma avaliação do PRONAF nos assentamentos de reforma agrária do Rio Grande do Norte

The research DEVELOPMENT AND PUBLIC POLICY: AN EVALUATION OF PRONAF IN THE SETTLEMENTS AGRARIAN REFORM OF RIO GRANDE DO NORTE aimed to evaluate the effectiveness of the National Program for Strengthening Family enhancerelement od development in rural settlements od Rio Grande do Norte. The methodological approach consisted of the completion of desk research and literature on development issues, policies, and rural credit and field research through semi- structured interviews with managers and technicians who work with the program and conducting focus with farmers settles who accessed the PRONAF the period from 2000 to 2006. The survey results confirm the central hypothesis of this work, that acces to PRONAF A is not causing efetivations relevant in the lives of farm workers settlers in Rio Grande do Norte. In the setllements where efetivations these occur, they are short of what the program intends to carry out and rely on a set of conditionalities that are beyond the operational frameworks of the same. Such questions point to the need to revise the program in order to estabilish adjustments that in practice the approach of the proposed objectives. For this purpose it is necessary to invest in factor that contribute to the program has a positive effect not only to increase income, but to contribute to the autonomy of the resettled farmers, expanding its capabilities and increased the power of choise with respect to life who wish to take

Ambiente institucional no crédito rural :avanços e retrocessos

This work aims to study the institucional environment for the implementation of financing policies directed to familiar agriculture. The central hypothesis is that, although all changes occured in the credit norms, in order to reduce the existing obstacles for the access of outsiders, the same institucional arrangement remains which gave support to the modernization - crystallizer of strengthening structures of this exclusion. The most relevant pressuposition is that the poor agriculturists are the most displayed to the institucional limitations. The concepts of institucional arrangements and environments used in this work had been constructed with support of the institucional school, contemplating itself the economic dimension, the organizational sociology and political science. In the relation of the institucional changes with the state performance, the theorist reading was important that reflect on the relative autonomy of the State and studious of the Brazilian State. The empirical part consisted of a research which had been applied questionnaires with benefited and non-benefited agriculturists with PRONAF B, in thirteen cities of Rio Grande do Norte. In each city, interviews with four of its main mediators had been carried out. The research results had ratified the hypothesis of the work of that the conception of the public policies does not take in account the institution role in the behavior and the choices of the individual and collective agents, inferring itself that this policy, as others, lacks of mediation that exceed the rationality of legal landmarks

Como se chega ou como nos tornamos docentes no Ensino Superior

The Thesis weaved in the (auto) biographical boarding studies the existence of existential teaching, in the scope of Superior Teaching, guided in the experience and the (auto) formative scope as a theoreticianmethodological support present in the classrooms, being three the essential questions: Which the way of (auto) formation traveled by professors of Superior Teaching, what is, for these citizens, the teaching in Superior Teaching and what they understand from existential teaching according to their narratives. The epistemology of this work, based on Program of After-Graduation in Education of Universidade Federal do Rio Grande do Norte, Support of Research: Professionalization and Formation Lecturing emerges, especially, of the studies and research realized by Ramalho and Nuñez (2005, 2006), Morosini (2001), Pimenta and Anastasiou (2002), Nóvoa (2000), Josso (2004), Dominicé (1988), Catani (2002), and Souza (2004), among other authors, yonder the educational practice exercised by researcher and involved citizens in inquiryformation, what it is confirmed from the three methodological tools that given support to the covered way: Eight topic narratives, a participantcomment and seven laboratories or parallel meeting of formation (EPF's) experimented with licensed teachers that actuate in superior teaching institutions (IES), public and private, localized in the city of Natal/RN. The Thesis points out, in this way, existential education in the guideline of viable and concrete methodological alternatives amongst the problematic of the (auto) formation faced for the professors in Superior Teaching

Livre expressão :para que te quero? o interesse público no ensino do Jornalismo

The main objective of this research was studying the meanings of the freedom of expression and what professors of Journalism think about the way those meanings are used in pedagogical practices. The term freedom of expression is commonly used in journalism even though it is not so studied, consequently we don t have a word to define it. Therefore, we related the term freedom of expression in Journalism teaching to the condition as the object of this study, aiming to establish a connection among the term, the right, free expression and the endurance of the right. The theorical support to understand the dynamic of the meanings of the freedom of expression in the social practice of Journalism teaching was based in the Hegeliana dialetic theorical principles and in the language philosophy more specifically in Bakhtin s perspective from which we can mention the social auditorium, immediate conditions of production and a wider social horizon as the main categories of analysis. This study is a qualitative research with an interacionist perspective anchored in a semi-structured interview as a privileged method of data collecting made with ten professors from Journalism graduation. The analysis reveals that, in the interviewers perspective, there would be a deceiving practice from freedom of expression in the journalism teaching in which emerges either in speeches with handbills spreading the fear and/or under a stimulus form to concealment

Potencialidades do uso do blog em educação.

This research is an interpretative analysis of the type participatory research, developed in a qualitative and quantitative use of the blog as a support to a specific discipline, in order to identify the potential evident from its use. The report discusses the changes that have occurred in contemporary society, relating to the development of information technologies and communication (ITC s), presents a brief review of the historical background of the Internet and its use as an aid to education, emphasizing some environments inserted media the Internet, focusing on the main blog - its concept, origin and categorization, and analyzes the concepts of using the blog from the dialogues with teachers and students of pedagogy course at the Federal University of Rio Grande do Norte. Started from the assumption that the use of technological resources, such as blogging, with strictly educational purposes, can extend the knowledge beyond the walls of the classroom, thus creating a dialogic and interactive environment. Using data collected through interviews, questionnaires and observation, we seek to understand the object of study as a supportive environment for the teaching of a subject, raising some theoretical and methodological questions about its application to educational practice, and possible contributions to the construction of knowledge. The results indicate that there are several capabilities that make the blog a space conducive to teaching and learning process, and relates the concepts of the study participants about their use, highlighting the most important places to be solved, so that teachers and students to take ownership of knowledge necessary for capacity building required by the contemporary social context, due to the advancement of science and technology.

Escola ativa como semeadora de sonhos nas turmas multianuais: representações das(os) professoras(es) da microrregião de Mossoró-RN.

The issue of multi-classes in schools from the field and methodology for these classes is controversial and contentious, both in terms of teaching, monitoring and organizational, is the perspective of values, training and systematization of public policy. Why the strategy Methodological Active School facing those classes appeared as a significant and exciting topic of research. Thus, it was aimed to apprehend the social representations of active school by teachers (s) to understand the extent to which these representations influence the acceptance and use of the program strategies. Perceiving and analyzing also the various factors related to the management, monitoring and training needs of (the) teachers as alternatives to make this meaningful action. The study focused 112 teachers (s), which for over a year, worked in the program in six municipalities in the micro-region of Rio Grande do Norte / RN - Areia Branca, Baraúna, Grossos, Mossoró, Serra do Mel and Tibau. From this perspective relied on Social Representation Theory and the Theory of the Central Core, attending to the subjectivity of the object searched, inserted in the psychosocial field of knowledge, we opted for multi-methodological approach, using quantitative and qualitative techniques. However, the highlight was a projective technique Free Association of Words from the term Active School is .... The words were systematized by EVOC program, and also applied semi-structured interviews, focusing specific issues that led to trace the socio-demographic profile of (the) participants and wider issues about the object of study. The evocations, justifications and interviews provided the basis for the analysis of the content that followed the steps: formation of the corpus, the composition of the analysis and categorization. The results show the representations an attitude of acceptance and positive appraisal of the participants to the Active School Program. At the core, these representations are objectified around the words "action", "learning", "autonomy" and "interaction". Based on the premise that the representations have a duty to guide the practices and behavior, one can see that the positive attitude of the group favors a systematic methodology and acceptance of the program, but we must look at the changes in management, training, monitoring of (the) teachers (s) and support to schools.

Concepões e práticas pedagógicas de professoras da educação infantil na inclusão de alunos com deficiência

This research focuses on inclusive in childhood education. Its purpose was to investigate and analyze the conceptions and expectations of teachers of childhood education, childhood education center form Natal/RN, on the inclusion students with disabilities, school and pedagogical practices developed and implications for students learning. Theoric base of the cultural historic perspective, the search took by qualitative analysis of numbers form the case study method. It was used methodological procedures: documentary analysis, participant observation, field journal and semi structures interview.Three teachers participated in the survey of that school had student with disabilities in their classrooms. These teachers were called: Rapunzel, Snow white e Pretty. The teacher s nouns involved the refered kind of education. The data obtained from the observation indicated the regular school of childhood education provides educational practices that promote the participation and participation and development of students with disabilities, live situation that may create barriers to learning and to the development of these children. The analysing data of interview from Bardin content analysis (1994) was based in Cunha s studies (2001) Brun (2006, 2008), Mantoam (2006, 2008), Palacios, Paniagua (2007), among others. The dada showed that correlation and divergence of perceptions and expectations about the issues surrounding inclusion in childhood education. The results shaved that teaching strategies, affective ties, sensitivity and own routine of childhood education are factors that can promote inclusive proposal, but also needs a greater fulfillment individual differences of each child in order to their potentiality. The study also shaved that the negative of pedagogic support to teacher, the ignorance of them as guidelines and strategies that include the student s diversity, the importance having positive conceptions about the learning and development of student with severe learning disabilities and the need for a pedagogic training and of a collective work at school which everybody collaborates : parents, direction, coordination getting inclusive school. Believe that this study pointed relevant issues to be focus new research, since the theme is still lacking in study, therefore emphasize, the importance of conducting research that continuous this job

Desistência ao tratamento de usuários de crack no centro de atenção pssicosocial em Campina Grande/PB

This study aimed to analyze the phenomenon of abdication of monitoring/treatment of crack users in a CAPS AD in Campina Grande-PB. That s an exploratory , description approach ,whose theoretical focus was historical-dialect of public politics on alcohol and drugs. The information collected was realized by using the technique of semi-structured interviews, combined with the crack users registered in CAPS AD in Campina Grande between 2007 and 2011.The material collected was subjected to thematic analysis method, obtaining the extraction of the following categories and subcategories of analysis: CATEGORY 1: Factors of abdication of monitoring/treatment in CAPS AD in Campina Grande PB with subcategory 1.1. Abdication on their own , 1.2. To take work/employment, 1.3 . Search for more intensive treatment , 1.4. Due to relapse; CATEGORY 2 : Treatment/monitoring in CAPS AD to the subcategory, 2.1. The dependence of crack and family support as reasons that led to frequent CAPS AD. CATEGORY 3: Living with crack addiction without treatment/monitoring in CAPS AD with the subcategory, 3.1. Religiosity as a therapeutic tool .The results showed a distance between priority for community treatment and the reality where there is lack of information about this kind of treatment and the admission as a solution. The discourse about the abdication of treatment of crack users make reference to the importance of family support, to the influence for the phenomenon of relapse and the affection to religious conceptions. Although the subjects recognize the qualifications of CAPS AD treatment, they try by themselves or by family influence, another ways of hospitalization. This leads us to conclude that it is necessary reflection and assessment of the work of CAPS AD. Counting on the social changes and the need of answers that the phenomenon requires

Atuação dos profissionais de saúde no atendimento à criança vítima de violência

This study had the purpose of identifying the health professional performance during the care of children victimized by violence. Its objectives were the evaluation of how health professionals diagnose violence on the hospitalized child during the care process; the identification, according to the experience of each health professional, of the types of violence on the hospitalized child, the child's aggressors and the most frequent1y injured area in the body and the analysis of conducts adopted by health professionals upon the recognition of a violence case on a hospitalized child. The study was of the descriptive-exploratory type, using a quantitative approach, performed on Hospital da Criança Santo Antônio (HCSA) in Boa Vista - RR. The population consisted of 235 health professionals, with data collected from June to August 2006. The results show a clear predominance of the female gender, (76,17%); aged 31 to 35 (26,81%); married (45,96%). As for professional formation, 63,9% were nursing auxiliaries and technicians,16,2% physicians, 14,8% nurses, 3,9% social assistants and 2,1% psychologists; 45,96% had completed middle-level education, 51,06% of which coming from private education establishments and 48,94% from public education institutions.; 97,66 % have specialization or improvement courses on their area; 32,77% among 05 to 09 years of work time; 32,06(10 worked on pediatric infirmaries; 75,74% state they have experience with children victimized by violence; 96,22% consider themselves capable of identifying the types of violence suffered by children; 29,00% consider physical violence the most common kind; 91,57% sought to identify the aggressors; 27,72% consider the mother to be the child's main aggressor, 26,36% the father, and 22,28% the stepfather; 26,55% consider the limbs and pelvic waist to be the body region most affected by violence; 26,91% take the attitude of reporting to the nurse and 20,13% to the social service; 70,79% state that the conducts were performed as a team; 26,25% of the professionals consider that the social assistants helped the most on deciding which conduct to adopt; 76,40% state there was no one opposed to the performing of these conducts; but 23,60% that stated there was no one opposed to the performing of these conducts, 77,08% reveal that the family members were against the conducts taken by the team. We conclude that, the hea1th professionals who were part of the study, apparently are not adequate prepared to diagnose and report the violence on child. The results were more drastic when we related the physicians and the nurses' answers, considering that they give directed assistance to these victims social assistants and psychologists are the ones best prepared to conduct cases of child mistreatment. However, we are conscious of our responsibility with professional education not only in upper grade institution but also on the middle-level. We believe also, that a continued education program can help to improve the professional knowledge and improve the quality of care

Desenvolvimento de um modelo computacional para a ampliação do atendimento do Programa de Acessibilidade Especial Porta a Porta - PRAE

Worldwide, the demand for transportation services for persons with disabilities, the elderly, and persons with reduced mobility have increased in recent years. The population is aging, governments need to adapt to this reality, and this fact could mean business opportunities for companies. Within this context is inserted the Programa de Acessibilidade Especial porta a porta PRAE, a door to door public transportation service from the city of Natal-RN in Brazil. The research presented in this dissertation seeks to develop a programming model which can assist the process of decision making of managers of the shuttle. To that end, it was created an algorithm based on methods of generating approximate solutions known as heuristics. The purpose of the model is to increase the number of people served by the PRAE, given the available fleet, generating optimized schedules routes. The PRAE is a problem of vehicle routing and scheduling of dial-a-ride - DARP, the most complex type among the routing problems. The validation of the method of resolution was made by comparing the results derived by the model and the currently programming method. It is expected that the model is able to increase the current capacity of the service requests of transport

Optimum contribution selection using differential evolution

Um programa baseado na técnica de evolução diferencial foi desenvolvido para a definição da contribuição genética ótima na seleção de candidatos a reprodução. A função- objetivo a ser otimizada foi composta pelo mérito genético esperado da futura progênie e pela coascendência média dos animais em reprodução. Conjuntos de dados reais e simulados de populações com gerações sobrepostas foram usados para validar e testar o desempenho do programa desenvolvido. O programa se mostrou computacionalmente eficiente e viável para ser aplicado na prática e as consequências esperadas de sua aplicação, em comparação a procedimentos empíricos de controle da endogamia e/ou com a seleção baseada apenas no valor genético esperado, seriam a melhora da resposta genética futura e limitação mais efetiva da taxa de endogamia.

Desenvolvimento de equipamentos para o mapeamento de áreas infestadas por macrófitas aquáticas imersas

Foi desenvolvido um conjunto de equipamentos com o objetivo de mapear as áreas infestadas por macrófitas aquáticas, auxiliando operações de manejo mecânico, as quais são realizadas por uma colhedora desenvolvida especificamente para essa finalidade. O conjunto de equipamentos foi constituído por um GPS com programa de correção diferencial, acoplado a um palmtop, um sistema com dois teclados ligados em dataloggers e um transdutor de deslocamento linear LT. O GPS, através do palmtop, proporcionava o mapeamento da área de deslocamento, auxiliando o operador na movimentação da máquina, otimizando a operação e evitando, dessa forma, a sobreposição das faixas de coleta na área a ser manejada. Um dos teclados monitorava a movimentação e operação da colhedora, além da presença de obstáculos, como tocos e bancos de areia, enquanto o outro gerava dados sobre a presença de determinada espécie de planta, como E. densa, E. najas e C. demersum, além do nível de infestação destas plantas. O transdutor, instalado na plataforma frontal da colhedora, se movimentava linearmente, gerando informações sobre a profundidade da coleta realizada. Dessa forma, pôde-se observar que o desenvolvimento desse conjunto de equipamentos foi de grande utilidade e auxiliou a operação de controle mecânico de áreas infestadas por macrófitas aquáticas imersas, possibilitando, assim, o planejamento de operações de manejo e controle subseqüentes.

Modelo matemático para otimização dos custos de um sistema híbrido eólico-solar : aplicação no bombeamento de petróleo

This work purposes the application of a methodology to optimize the implantation cost of an wind-solar hybrid system for oil pumping. The developed model is estimated the implantation cost of system through Multiple Linear Regression technique, on the basis of the previous knowledge of variables: necessary capacity of storage, total daily energy demand, wind power, module power and module number. These variables are gotten by means of sizing. The considered model not only can be applied to the oil pumping, but also for any other purposes of electric energy generation for conversion of solar, wind or solar-wind energy, that demand short powers. Parametric statistical T-student tests had been used to detect the significant difference in the average of total cost to being considered the diameter of the wind, F by Snedecor in the variance analysis to test if the coefficients of the considered model are significantly different of zero and test not-parametric statistical by Friedman, toverify if there is difference in the system cost, by being considered the photovoltaic module powers. In decision of hypothesis tests was considered a 5%-significant level. The configurations module powers showed significant differences in total cost of investment by considering an electrical motor of 3 HP. The configurations module powers showed significant differences in total cost of investment by considering an electrical motor of 5 HP only to wind speed of 4m/s and 6 m/s in wind of 3 m, 4m and 5 m of diameter. There was not significant difference in costs to diameters of winds of 3 m and 4m. The mathematical model and the computational program may be used to others applications which require electrical between 2.250 W and 3.750 W. A computational program was developed to assist the study of several configurations that optimizes the implantation cost of an wind-solar system through considered mathematical model

Diversidade genética em populações-núcleo de Eucalyptus grandis

No melhoramento genético de espécies florestais, uma população base ou indivíduos superiores pré-selecionados tem importância fundamental para a manutenção do programa. Indivíduos de melhores procedências e de ampla base genética propiciam a obtenção de ganhos de forma contínua. O objetivo deste trabalho foi avaliar a diversidade genética em duas populações-núcleo de Eucalyptus grandis. Foram avaliados 39 indivíduos, sendo 19 pertencentes à população 1 e 20, à população 2, utilizando-se 14 primers microssatélite. Os fragmentos foram identificados e analisados a partir dos programas GeneScan e Genotyper, utilizando-se um sequenciador automático ABI Prism 3100. O número de alelos encontrados para cada primer variou de cinco a 15 para a população 1 e, de 8 a 18 para a população 2. A heterozigosidade estimada foi maior na população 2, 0,869, contra 0,843 na população 1. A média da distância genética entre os indivíduos da população 1 foi 0,6220 e na população 2 foi 0,6112. Com a caracterização molecular dos indivíduos destas populações foi construído um banco de dados que permitirá, a partir dos parâmetros de genética de populações, monitorar esses programas de melhoramento em diferentes ciclos de seleção.