Saberes e práticas em experiência de construção da sustentabilidade no meio rural nordestino

The purpose of this work is to analyze the knowledge relationships that articulate in projects of maintainable rural development construction for the paraiban semi-arid, analyzing the farmers daily practices and their relationship with the technological practices spread by ONGs. We took as empirical object the rural community of Lajedo de Timbaúba, municipal district of Soledade-PB, located in the very small region of paraiban Curimataú. It is a community where registers one of the first cases of maintainable rural development planning in the state of Paraíba. The analysis was centered on the farmers experiences of life in sustainability experience, trying to understand how they acquire new knowledge and how they interact with them. In methodological terms, it was considered feasible to place the knowledge interaction between the farmers and technicians from ONGs by placing the analysis according to Paulo Freire s questioning (2006): extension or communication? To understand the farmers daily practices, it was resorted to the theoretical contribution by Michel de Certeau (2008) in order to discern a microresistance movement of inversion/rejection/changing by the farmers in relation to their external knowledge. Just from the theoretical point of view and resorting to the imaginary social by Cornelius Castoriadis (1982), it was considered the way of living of the farmers researched, having as reference the experience in the material and symbolic production of their lives. It became indispensable, therefore, not to dissociate the knowledge relationships between farmers and technicians from ONGs from the sustainability concepts, maintainable rural development, and rural extension. The results of the study revealed that the farmers from Lajedo de Timbaúba while dealing with the technological practices proposed by ONGs that work in the community, express those practices from their daily logic, and they constitute them in survival strategies that are inserted in their own idiosyncrasy. It was verified, therefore, that the external knowledge presented by the proposals of sociability alternatives with the droughts in the perspective of maintainable development while placed in the farmers daily relationship, they are judged as advantageous or disadvantageous when they are confronted with their peculiar way of doing their daily work. The technological practices are incorporated, denied, or recreated starting from evaluative criteria related to the preservation of the soil and to the economical and social reproduction of the unit of production of family agriculture

Construção e validação de um receptor GPS para uso espacial

Global Positioning System, or simply GPS, it is a radionavigation system developed by United States for military applications, but it becames very useful for civilian using. In the last decades Brazil has developed sounding rockets and today many projects to build micro and nanosatellites has appeared. This kind of vehicles named spacecrafts or high dynamic vehicles, can use GPS for its autonome location and trajectories controls. Despite of a huge number of GPS receivers available for civilian applications, they cannot used in high dynamic vehicles due environmental issues (vibrations, temperatures, etc.) or imposed dynamic working limits. Only a few nations have the technology to build GPS receivers for spacecrafts or high dynamic vehicles is available and they imposes rules who difficult the access to this receivers. This project intends to build a GPS receiver, to install them in a payload of a sounding rocket and data collecting to verify its correct operation when at the flight conditions. The inner software to this receiver was available in source code and it was tested in a software development platform named GPS Architect. Many organizations cooperated to support this project: AEB, UFRN, IAE, INPE e CLBI. After many phases: defining working conditions, choice and searching electronic, the making of the printed boards, assembling and assembling tests; the receiver was installed in a VS30 sounding rocket launched at Centro de Lançamento da Barreira do Inferno in Natal/RN. Despite of the fact the locations data from the receiver were collected only the first 70 seconds of flight, this data confirms the correct operation of the receiver by the comparison between its positioning data and the the trajectory data from CLBI s tracking radar named ADOUR

"O que é que há? O que é que está se passando" nessas cabeças? : um estudo sobre a concepção de projetos recentes da arquitetura residencial unifamiliar em Natal

L étude se fonde sur la recherche du processus inhérent à la conception du projet par le biais de l approche architecturologique proposée par Philippe Boudon et al (2000) ; un modèle théorique qui sert de fondement à la construction d une connaissance de l architecture au moyen d une étude de la nature des opérations mentales de chaque architecte lorsqu il organise son travail de conception. La modélisation de l architecturologie concentre son étude sur le travail qui a lieu avant même la confection matérielle du projet (représentation graphique finale). De cette façon, douze projets furent analysés d architecture résidencielle unifamiliale; conçus récemment par six architectes « potiguares » pour Natal et sa région périphérique. Les résultats mettent en évidence un ensemble de modèles substrats (comme point de départ) et téléologiques (comme point d arrivée) adoptés par les auteurs au cours de la conception de leurs projets. Ces modèles, de façon générale, sont liés aux pertinences socio-culturelles (conventions, formes traditionnelles ou coutumes) du contexte pour lesquels ils sont conçus (lotissements privés de co-propriété des classes moyennes et moyennes-supérieures) et en même temps, ils sont le fruit de croyances, d idéologies et d expériences antérieures propres à l espace de la conception de chaque architecte

Exclusão social e projetos habitacionais. Um estudo sobre conjuntos habitacionais, segregação e exclusão social em Natal/RN

In Natal s urban growth process it is given that the performance period of the National Housing Bank (BNH, 1964-1986) was marked by the intense expansion of the urban grid and configuration of outskirts, through the construction of social housing developments. Implanted in segregated areas of the existing formal city, the population installed in these complexes was also excluded from their rights, considering that the housing defines itself not only by the physical dwelling, but also by its access to urban infrastructure, facilities, services, and others. From this reality and the verification of the city s exclusion and sociospatial segregation processes, we aimed to quantitatively demonstrate levels of social exclusion in Natal, based on the methodology developed by Sposati (2000) and adapted by Genovez (2002), which relates IBGE s (Brazilian Institute of Geography and Statistics) database underlying variables such as income, schooling and dwelling s quality. The research unveiled some spatial patterns promoted by the social housings: in these areas islands were developed with higher indicators than surrounding areas, revealing internal hierarchies in the city s outskirts

EMPRESAS DA CONSTRUÇÃO CIVIL DO MUNICÍPIO DE ARACAJU-SE: Percepções sobre Responsabilidade Social Empresarial

The companies are part of an important segment of the society, besides, it exercises a significant contribution, being also responsible for helping in the improvement of the quality of life of the population. Like this being, to present research looked for to investigate the perception that the entrepreneurs of the building site of Aracaju/SE have concerning the theme Business Social Responsibility (RSE). besides the perceptions, it was part also of the research, to know the entrepreneur's of the building site social construction and the possible practices of Social Responsibility. The research grew in two different moments. The first looked for the theoretical embasamento, trying to study the economical sociology, understanding the effects provoked by the economy, understanding to you reason them that you/they took to the appearance of the perceptions that you/they permeate the historicity among the market, the nascedouro of the associations as company and his/her dynamics in the society. It was also researched, the concept of social responsibility in national and local extent, as well as, the contextualização of the state of Sergipe, detaching the municipal district of Aracaju, and describing how it happened his/her development starting from what is considered urbanization. In the second moment, the accomplishment of interviews in five companies, allowed to notice the entrepreneurs' perception concerning business social responsibility, as well as, actions of different characteristics in four of the samples. In these actions, they are patronage in cultural events, donations of projects for charity institutions, the concern with the preservation of the environment in the use of work materials ecologically correct, preventive health and employees' training. Concluding the research, I introduce the conclusions which it allowed to arrive me, and I point some suggestions for future researches that enlarge the reflection on this theme

Juventude rural e projetos de vida: a experiência do consórcio social da juventude rural em São João do Sabugi

The presented research however has as object to apprehend the contribution of the Social Trust of Agricultural Youth in Is João of the Sabugi, in the individual and collective projects of life of the agricultural young. In it interests to know them which are the dreams and desires of these young, its relation with familiar agriculture, its desires of permanence in the field, as well as the relation of the trust with the fortalecimento of its projects of life. Thus, the general objective is to argue the contribution and influence of the Social Trust of Agricultural Youth in Is João of the Sabugi, in the individual and collective projects of life of the young of the city. The construction of the subject on agricultural youth to the contact with the land and the work in familiar agriculture were one strong expression identified in this research, exactly leading in consideration that nor all possess the desire to remain young agricultural , or at least young agriculturists. For the young, agricultural being is express through not only the contact with the agricultural work, but also the process of sociability, formation of affective bows, possibilities of new learnings, valuation of the agricultural way and its potentialities, of that the corporeal property and cultural is possible to be young in the agricultural way with access, historicamente denied

Entre o mercado e a construção social: uma análise da experiência da implantação doPRONAF-infraestrutura e PRONAT nos territórios do Mato Grande-RN e sertão do Apodi-RN (1997 - 2010)

Analyzes the development experience in the Territories of Mato Grande and Sertão do Apodi in the state of Rio Grande do Norte, evaluating the actions of the National Program for Strengthening Family Agriculture, specifically the line of infrastructure (PRONAF-INFRA), and the National Program for Sustainable Development of Rural Territories (PRONAT) in these territories. Summarizes the various rural development approaches and takes the theoretical assumptions of territorial development, the concept of constructed territory and market-plan territory, further the cycle model to analyze public policies selected these experiences. Thus, we propose to test the hypothesis that most of the actions implemented would lead to the formation of market-plan territories, in other words, perceived only as a platform for the presentation of projects. The literature and documents, combined with case studies, interviews and direct observation of the meetings of committees, showed that, despite two boards are under the same laws, rules and formal regulations, have clear differences when considering the theory and concepts that were used as reference. The Apodi s territory is closer to a constructed space thus the search for a broader agenda, more autonomous and more appropriate to the reality experienced by local actors. On other hand the Territory of Mato Grande had the characteristics of a market-plan territory more present. As the result, the territory of Sertão do Apodi accesses not only as part of a greater number of policies and funding sources, ensuring a greater and more diverse investment volume than the territory of Mato Grande. Despite these differences, studies have shown that territorial boards surveyed are still far from becoming the main forum for managing the development from conception planning socially constructed. Showed, finally, that territorial development strategy is relevant, but requires a long walk and a deep and continuous learning process to be successfully implemented in rural areas of Northeast Brazil

Professoras e projetos: concepções e práticas no ensino fundamental

The discussion we have established in this study is about how the practice is developing educational projects based on work with because the methodological choice of the teacher. The study of an ethnographic qualitative approach was conducted with a group of six teachers in two public schools in School Administrative Zone north of the city of Natal / RN. Data were constructed from semi-structured, reinforced by the direct observation of the practice of teaching of teachers. The goals outlined were to identify the reasons why the option for the project, listing the benchmarks that subsidized their construction, the observation of everyday experience in educational planning and development of projects developed. In the light of information we can notice a complex and even contradictory, which is confusing the concepts and practices are weakened. The analysis revealed inconsistencies between theory and practice in working with projects, the fruit of little theoretical development of teachers. The adoption of the project as a methodological option has meant a change in direction of the effective action didactic. Reflects on this situation, it was concluded that there is a need to broaden the understanding of the significance of this type of work, covering the different dimensions that involve the practice of research, research and training of teachers. Even preventing the intentions and initiatives of the teachers, it must be emphasized is the process of learning within an approach that focuses the process of learning in multiple dimensions, inter-relational, both the capabilities of students in the areas of knowledge.

Intencionalidades e práticas na construção de metodologias o CEFET-SE

Successive curricular changes that occurred in professional education altered pedagogical practices, and these practices being developed by means of integrating projects, at Centro Federal de Educação Tecnológica de Sergipe (CEFET-SE), between 2001 and 2003, originated some questions which became the study object of this thesis. We search for theoretical support mainly in GEPEM research (GEPEM/UFRN) works and practices in order to analyze elements that emerged from this pedagogical practice. To do so, we take as main reference the research of qualitative approach. We developed documents analysis, interviews, considering three aspects: the scenery where these changes took place, the conception and implementation of the Integrating Projects for what, we ask support in pedagogy of projects studies and principles of interdisciplinary, and contextualization as curriculum structuring elements. This research brought out some difficulties, conflicts and possible consensus in developing the methodological strategies for the Projects. In this process of coexistence of the traditional and the new, of an unavoidable distance between what was thought and what was effectively done, elements for a new pedagogical practice emerged. This could be noticed in terms of participative work, formative moments, teacher s autonomy related to the pedagogical work. A new door could be open to the possibilities of taking conscience of accepting the differences and oneself autoexperimentation. These are the possibilities that make men, not being mere information deposit, can dialog and transform, producing his existence by this means. In the present case, the existence of being teacher, the build himself in the time of possibilities

Construindo um modelo de referência ao despertar do interesse dos sujeitos em projetos educativos em ambiente on-line

This dissertation was written for the making of a model to be used as reference to the construction and diagnoses of educational projects in on-line environments. The model approaches a series of characteristics, technical and humans, which if considered can increase the potential of awake the interests to the active use of these projects for the students and build conditions to the development of an active posture by the students, fundamental factor to the educational advances. Focused in the students, not in the technology in use, we propose this model as a guide, reference to be used in a critical way in relation with every educational context. This research was made from the qualitative category, trough the method of study of case, using as reference to the analysis the use of the website guanabara.info - website outside of the school context - by it users, heard through the internet, by the use of semi-opened interview, in a data taken of the primary type. We follow as theoretical references Paulo Freire´s work, considering his vision of education and the building of knowledge as a process which occurs between man, and Celestín Freinet, in his pedagogy of humanized and critical insertion of the technologies in the school. At the end, we show the practical utilization of the model constructed using it for the diagnostics of an educational project in the on-line educational environmental moodle

A construção da ponte metálica sobre o Rio Pontengi: aspectos históricos, construtivos e de durabilidade - Natal/RN, Brasil (1912-1916) - estudo de caso

It is a case study that reports the construction of metal truss bridge in the river Potengi in Natal, Rio Grande do Norte, between the years 1912 and 1916. From testimonials on steel bridges in Brazil and worldwide including foundations. Documentary research from procurement of projects and contracts was performed. A chronology of construction, with a description of the equipment used and its original budget with the Brazilian government. Still, we used interviews and surveys with experimental sampling / testimonies, laboratory tests. This study aims to analyze historically and technically the Bridge over the River Potengi, emphasizing primarily the construction process, the qualities and characteristics of the materials used and the technological, chemical, mineralogical and microstructural properties of cement and concrete used in its construction. Taking as conclusions that cements pozolônicos ensured a good durability to the concrete in a hundred-year period and that the solution employed with the compressed air caissons was right

Estudos e projetos de filtro interdigital em microfita para aplicação prática ao transponder do satélite ITASAT

This work shows a theoretical analysis together with numerical and experimental results of transmission characteristics from the microstrip bandpass filters with different geometries. These filters are built over isotropic dielectric substrates. The numerical analysis is made by specifical commercial softwares, like Ansoft Designer and Agilent Advanced Design System (ADS). In addition to these tools, a Matlab Script was built to analyze the filters through the Finite-Difference Time-Domain (FDTD) method. The filters project focused the development of the first stage of filtering in the ITASAT s Transponder receptor, and its integration with the others systems. Some microstrip filters architectures have been studied, aiming the viability of implementation and suitable practical application for the purposes of the ITASAT Project due to its lowspace occupation in the lower UHF frequencies. The ITASAT project is a Universityexperimental project which will build a satellite to integrate the Brazilian Data Collect System s satellite constellation, with efforts of many Brazilian institutes, like for example AEB (Brazilian Spatial Agency), ITA (Technological Institute of Aeronautics), INPE/CRN (National Institute of Spatial Researches/Northeastern Regional Center) and UFRN (Federal University of Rio Grande do Norte). Comparisons were made between numerical and experimental results of all filters, where good agreements could be noticed, reaching the most of the objectives. Also, post-work improvements were suggested.

Construção e análise de desempenho de um fogão solar à concentração utilizando dois focos para cozimento direto

A model of a solar oven with a reflective surface composed of two mirror segments is presented, constituting a two semi-parabolic surfaces made of fiberglass, applied on a ceramic mold, intended to be used in residential and commercial cooking. The reflective surface of the semi-parable is obtained with the use of multiple plain segments of 2 mm wide mirrors. The semi-parabolic structure has visible movements that are comparable to that of the sun. The technical details of the manufacturing and assembling processes will be presented with an analysis of the viability of thermal, economic, and materials of such prototype. This prototype has important social implications and primordial aspects, which combats the ecological damages caused by the wide-scale use of firewood during cooking. It has been demonstrated that the solar oven has the capacity to cook simultaneous two meals distinct for a family of four

Projeto, construção e levantamento de desempenho de um concentrador solar cilíndro parabólico com mecanismo automático de rastreamento solar

An cylinder-parabolic solar concentrator is presented to produce steam for different applications. This prototype was built in glass fiber with dimensions that follow a study of optimization of parameters inherent in the optical reflection of sunlight by the surface of reflection and absorption of the same by tubing that leads the fluid of work. The surface of the concentrator of 2.24 m² has been covered by layers of mirror with 1.0 m of lenght and 2.0 cm wide. The absorb tubing consists of a copper tube diameter equal to 28 mm. The concentrator is moving to follow the apparent motion of the sun. It will be presented the processes of manufacturing and assembly of the concentrator proposed, which has as main characteristics the facilities construction and assembly, in addition to reduced cost. Will be presented data from tests performed to produce steam setting up some parameters that diagnose the efficiency of the concentrator. It will be demonstrated the viabilities thermal, economic and of materials of the proposed system.The maximum temperature achieved in the vacuum tube absorber was 232.1°C and average temperature for 1 hour interval was 171.5°C, obtained in a test with automation. The maximum temperature achieved in the output of water was 197.7°C for a temperature of 200.0°C in the absorber tube. The best average result of the water exit temperature to interval of 1 hour was 170.2°C for a temperature of 171.2°C, in the absorber tube, obtained in test with automation. Water exit mean temperatures were always above of the water steaming temperature. The concentrator present a useful efficiency of 38% and a production cost of approximately R$ 450,00 ( $ 160.34)

Projeto, construção e análise de desempenho de coletores solares alternativos utilizando garrafas pet

A solar alternative system for water heating is presented. It work on a thermosiphon, consisting of one or two alternative collectors and a water storage tank also alternative, whose main purpose is to socialize the use of energy mainly to be used by people of low income. The collectors were built from the use of pets bottles, cans of beer and soft drinks and tubes of PVC, ½ " and the thermal reservoirs from a drum of polyethylene used for storage of water and garbage placed inside cylinder of fiber glass and EPS ground between the two surfaces. Such collectors are formed by three elements: pet bottles, cans and tubes absorbers. The heating units, which form the collector contains inside the cans that can be closed, in original form or in the form of plate. The collectors have an absorber grid formed by eight absorbers PVC tube, connected through connections at T of the same material and diameter. It will be presented data of the thermal parameters which demonstrate the efficiency of the heating system proposed. Relative aspects will be boarded also the susceptibility the thermal degradation and for UV for the PVC tubes. It will be demonstrated that this alternative heating system, which has as its main feature low cost, presents thermal, economic and materials viabilities