Segunda lei da termodinâmica e a entropia

Apresenta algumas observações experimentais que fornecem embasamento para a segunda lei da termodinâmica, os enunciados de Clausius e Kelvin-Planck. Demonstra através de esquemas o princípio de funcionamento das máquinas térmicas e dos refrigeradores, das máquinas ideais (descrição do ciclo de Carnot) e a representação dos ciclos de potência e de refrigeração num diagrama p-v. Avalia o rendimento de máquinas térmicas ideais. Posteriormente, define o conceito de entropia e suas aplicações, como calcular variações desta propriedade termodinâmica em diferentes processos, em líquidos, sólidos e gases ideais.

Lei da Indução

O vídeo objetiva trabalhar conceitos relacionados à Lei da Indução. Nele, com o auxílio de ferramentas, é demonstrado um campo eletromagnético produzido por corrente induzida.

A cidade sem barreiras é para todos?: avaliação das condições de deslocamento no bairro da Cidade Alta, Natal/RN

In this present work, the conditions of displacements and the behaviors of the users are evaluated, face to the physical adequacies in accessibility in the inserted area in the central quadrilateral of the Quarter of Cidade Alta, in the City of Natal/RN, space clipping established by its great meaning historical and cultural. For this reason such area was a target of an integrated actions plan during the years of 1993 and 1998, with the implantation of part of the Project CIDADE SEM BARREIRAS (City without Barriers) and, later, the implementation of the Project CIDADE PARA TODOS's proposals (City for All), having as supports the constant Brazilian norms inserted into the NB9050/1994 and in the Municipal law number 4.090/92, effective ones in the period of the interventions. Considering that the carried through actions at the time were directed to the elimination of the architectural barriers to guarantee the right to go and to come, the research received a human universe formed by all the people in situation of displacement in the central area of the interventions in the quarter of the Cidade Alta, independently of their locomotive or sensorial conditions, emphasizing the aspects most excellent how much to the accessibility of the sidewalk, as promotional of mobility, integration and urban organization, as well as of the public squares of that one quadrilateral, conceived, originally, as spaces of aggregation and social inclusion. The work appealed to the direct comment and the gotten results had been collated with the ex port facto law and technique norms, of the year of 2004, and with the legal devices contained in the Federal Decree number 5.296/2004, as way to certify the levels of efficiency of these adaptations in that it says respect to the current conditions of demanded accessibility and urban mobility

Dos direitos da personalidade e a lei de doação de órgãos: o que há para cartografar?

This study aimed at examining the representation and the level of knowledge as well as getting acquainted whether there had been significant divergence among three social groups of 3rd year Law students, 7th period Medical students at UFPB and a group of people from the Catholic Church in vila dos pescadores in João Pessoa - about organ donation, transplant law and ethical issues that raise questions. In order to accomplish the qualitative analysis, Bardin´s content analysis technique was applied in conjunction with the Chisquare test which was applied with significance level of 5% to quantitative data. The data revealed that most informants agree with organ donation, Although they are not acquainted with the law of transplants, and with the lack of confidence in the single list of recipients. The problem is that there is an encouragement to trades with organs and the possibility of any person legally authorized to donate organs in life. The statistically significant difference was observed in only two questions, ie, in response to the confidence in the diagnosis of brain death: 64% of 7th period Medical students at UFPB trust this diagnosis versus 12% of the evangelizing group of vila dos pescadores. The other difference refers to the answer about the confidence in the single list of recipients: 36% of the 7th period Medical students of UFPB said to trust the list versus 12% of the 3rd law students of UFPB. This is was a multidisciplinary study with Involvement of lawyers and doctors

Amostragem seqüencial com base na lei de Taylor para levantamento de Spodoptera frugiperda na cultura do milho

A lagarta do cartucho do milho é uma das principais pragas do milho nas Américas, podendo ocorrer durante todos os estágios de crescimento da cultura, causando perdas de 15 a 37% na produção. Neste trabalho estudou-se a distribuição espacial dessa praga no campo, com a finalidade de desenvolver um sistema de amostragem para estimar sua densidade populacional. Na área cultivada com milho foram selecionados 3 campos experimentais de 40 m x 250 m cada, divididos em 100 parcelas cada. Foram contados o número de lagartas pequenas e grandes de S. frugiperda nas folhas e no cartucho das plantas, em 10 plantas ao acaso por parcela, num total de 1000 plantas por campo, em 5, 5 e 4 datas de amostragem, respectivamente. Lagartas menores que 1 cm eram consideradas pequenas e lagartas maiores que 1 cm, grandes. Foram estimados os parâmetros da lei de Taylor, sendo as estimativas dos parâmetros das regressões altamente significativas para todas as categorias larvais. O parâmetro b da lei de Taylor para lagarta pequena foi igual a 1,57, indicando que a forma de distribuição dessa categoria larval é agregada. Para lagartas grandes o parâmetro b foi igual a 0,79, o que conduz a um tipo de distribuição tendendo para aleatoriedade. Para o número total de lagartas os resultados são equivalentes aos obtidos para lagartas pequenas. Foi desenvolvido um plano de amostragem seqüencial com base nos parâmetros da lei de Taylor.

Uma avaliação política da política de avaliação da educação superior brasileira

We had as the problem of analysis in this research: what are the assumptions, principles and general content that based the Sistema Nacional de Avaliação da Educação Superior (SINAES). We started from the hypothesis that the general content of SINAES is essentially based on the assumptions and principles of a control/regulatory perspective of evaluation and a summative epistemology, objectivist and quantitativist, constituted by members who prioritize testing and classification of courses and institutions based on market values. The overall goal was to make a political evaluation of SINAES and the specific objectives were: a) apply the concepts of politics evaluation and meta-evaluation, b) identify the role of international organizations in education reform in the 1990s and its impact on superior education in Brazil c) redeem the concept of evaluation, especially in the field of studies in education; and d) investigate the evaluation policies of Brazilian superior education leading to SINAES. As for the technical procedures for collecting and analyzing data, the research was made with bibliography and documents, considering that it was developed by bibliographic sources and official publications. It was developed by crossing sources: texts or documents remitted to others; it was also concentrated: on the role of international organizations in educational and State reforms (in the 1990s); on the policies of evaluation of the Brazilian superior education (1980s and 1990s); on the proposal of the Comissão Especial de Avaliação (CEA); on the Law No. 10.861/2004; on the documents of CONAES; on the Decree No. 5.773/2006, and the MEC Regulatory Ordinances No. 4/2008 and No. 12/2008. It did not stop in the so called purely technical aspects, but in the ideological field itself. The research found that international organizations, notably the World Bank, played a political, intellectual and financial role determinant to the field of education, a fact that reflects in the legal framework. It was also found that the politics of evaluation of the superior education is historically marked by conflict, represented by two distinct perspectives of different natures and emphases. On one hand, the focus is on control / regulation, favoring efficiency, productivity and competitiveness benchmarking and prioritizing the punctual performance and measurement. On the other, it seeks to transform academic perspective in primarily formative / emancipatory, in order to support more institutional improvement. It was concluded that the CEA presented a conception evaluation predominantly formative and emancipatory, which emphasized the idea of system, centered around the institution and repudiated the rankings practices. In the post-formulation period, however, some of its principles were fragmenting and, gradually, the institution was giving way to the courses and the Exame Nacional de Desempenho de Estudantes (ENADE) grew in prominence. With the creation of the Conceito Preliminar de Cursos superiores (CPC) and of the Índice Geral de Cursos da Instituição de Educação Superior (IGC), it was redemeed the practice of evaluation as measurement and control, under the principles of efficiency and productivity. So, SINAES that seemed like a progressive evaluation method has assumed a setting that close resembles the Exame Nacional de Cursos (ENC-Provão). Nevertheless, the survival of institutional formative evaluation, in the superior education evaluation policies, still an issue in dispute

A Constitucionalidade do decreto de licitações da Petrobrás à luz dos princípios da legalidade e da eficiência

PETROBRAS, a Brazilian oil company, follows principles of public administration and from the Constitutional Amendment 9/95 in Brazil began to compete with other companies with the flexibility of the oil monopoly. In this new model started to use the simplified procedure for bidding so that could compete on equal terms. The ordinance that adopted a simplified procedure for bidding has been the subject of some criticism and lawsuits especially under the Court of Audit and the Supreme Court in Brazil. The analysis of their constitutionality, and the possibility of their use by other group companies is the theme of this work, and for this purpose, permeates through the notions of judicial review in the Brazilian law on the stage of law and economics analysis of the norm, and the principles applicable to PETROBRAS and the devices most frequently asked about the implementation of 2745/98 Decree. For this, the basic issue that should be investigated further is the regulatory power of the Federal Executive and the delegation of powers within the legislature and its conformation to the constitutional regency

A intervenção estatal no domínio econômico privado através da nova lei de recuperação de empresas e falências (lei 11.101/05)

Analysis of the elements of the Constitutional Order of the letter 1988 politics, with emphasis in the principles of this, a study on the intervention of the State in the private initiative by means of the Law of Recovery of Companies and Bankruptcies (law 11.101/05). New enterprise vision is admitted, over all in the interdependence between economic and social factors. Study on the globalization and the interdependence of economic and legal sciences in the construction of a legal optics in the search for the economic and social development, with the recognition of the interference of the Economy in the Right and its uneven importance. Still, we delineate the state intervention in the economic scope, of company and in the judicial recovery, as well as the consequences of such intervention in the involved credits in the judicial recovery and patrimony of the debtor in recovery. For such task, the elements of the Judicial Recovery, its principles and adequacy of these to the related ones in the chapter had been analyzed that turns on the national economic Order, describing the formal procedure for concession of the benefit of the Judicial Recovery and the principles in existing them. The forms of intervention of the State in the private economy were not disrespected, relating its direct and indirect performance as half of preservation of interests writings in the constitutional scope as public interest and preservation of the National economic Order. The regulating agencies as of direct state intervention were half not disrespected of the study for the relevance of the subject. It is revised national bibliography with incursions in French, Portuguese and North American comparative jurisprudence. One contributes in the aspect of the paper of the Judiciary Power in the protection of the companies in crisis and the social and economic impacts, over all in relation to the rights of the worked ones, credit and enterprise

Finanças públicas na nova ordem constitucional brasileira: uma análise comportamental dos municípios potiguares, nos anos antecedentes e posteriores à lei de responsabilidade fiscal LRF

The object of the present dissertation is to analyze the behavior of the public finances of the districts of the state of Rio Grande do Norte (RN), taking as reference a period fundamentally previous to the implementation of the Fiscal Responsibility Law LRF, comparatively to the first years, immediately after the advent of the mentioned institutional milestone. The central hypothesis of this study proposes that, from the institutions' viewpoint, the LRF sets securely consistent rules, in the orchestration of the behavior of the municipal revenues and expenses. These regulations, on the other hand, might be effective and reach the districts of the RN indiscriminately, apart from stabilizing tendencies and which are sustainable in the long run. In spite of this, the indicators calculated reveal that the districts researched show, during all the period under analysis, a diminished capacity of self-tax collection , and consequently, a high participation of the intergovernmental transfers in the composition of the current revenues. This behavior indicates that the goal of strengthening the municipal public finances, forecast in the LRF, tends to be only partially accomplished, due to the fiscal decentralism. The analysis and interpretation of the data are conducted from the literature of institutionalist orientation and in descriptive statistical tools applied to the municipal strata of the state of Rio Grande do Norte. Further on, it's used the econometrical method Pooled OLS, which demands the elimination of the municipal strata in order to allow the use of the model, in the attempt to strengthen and/or ratify the results of the research. Finally, the evidence reached in the dissertation show that the LRF brings better conditions to the potiguar municipal public finances, predominantly to the economically stronger districts; whereas the less dynamic municipal entities show rather divergent evidence, that is, their economies seem to be more oriented to a more pronounced state participation; therefore, it generates in the state of RN a certain antithesis in the results reached in the dissertation

A escola de aprendizes artífices de natal: república, trabalho e educação (1909 1942)

Crées par leDécret n° 7.566, le 23 septembre 1909, les 19 Escolas de Aprentizes Artífices (Écoles d Aprentis Artisans) stratégiquement situées dans les capitales des états brésiliens, répresentaient l une de plus importantes réalisations pour la formation de main-de-oeuvre qualifiée dans les premières décennies de XXème siècle. Alors, ce travail est constitué par une recherche historique ayant eu pour base les informations apportées par des documents divers (Lois, Décrets, Rapports et Messages Gouvernementales, Livres des Immatriculations) et des nouvelles publiées dans le journal A República, disponibles à l Instituto Histórico e Geográfico do Rio Grande do Norte IHG-RN, à l Arquivo Público do Estado et au Centro Federal de Educação Tecnológica do Rio Grande do Norte (CEFET RN). On montre la configuration que l expérience de l École d Aprentis Artisans a constituée au Rio Grande do Norte à partir de 1909, crée avec le niveau élémentaire jusqu au 1942, quand la Lei Orgânica do Ensino Industrial a changé cet enseignement en le modifiant pour le niveau secondaire. Dans l état du Rio Grande do Norte(RN), ce genre d école a été crée au 3 janvier de 1910. La finalité était la formation des ouvriers et contremaîtres par l enseignement pratique et technique nécessaires aux mineurs qui puissent apprendre un métier. L école du RN a contribuée pour la consolidation du projet politique-idéologique de la construction de la nationalité brésilienne, par des pratiques des contenu patriotique et civique-militaire, en détachant l insertion du scoutisme scolaire comme expression de la militarisation des pratiques éducatives pour le contrôle des corps. Malgré l enseignement professionnel avoir été utilisé pour l imposition des modèles culturelles sous-jacents aux rapports de production capitaliste qui étaient exigés des travailleurs, la Escola de Aprendizes Artífices de Natal a répondue à la demande locale, ce qui renforce l idée que sa création dans ce moment historique a attendu surtout le but politique-idéologique plutôt que celui du développement économique et éducationnel de la population norte-riograndense

Zona adensável de Ponta Negra em Natal/ RN: as conseqüências decorrentes da lei complementar 27/2000 na visão dos moradores da área

The quarrel on the urban intensific use of determined areas of the city is carried through in some levels of the society, which had to the fact to bring direct influences the population that inhabits it. The question to become an area to intensific use, implies in determining that the local infrastructure has the capacity to take care of to a bigger amount of people, inhabitants or passers-by. In the quarter of Ponta Negra, in Natal city (state of RN), its condition of area to intensific use to the municipal Law 27/2000 happened due that it starts to allow a bigger level of occupation of part of the quarter. This law has a direct relation with the installation of a complementary infrastructure in the quarter, to put does not send to its complementation and maintenance, what it takes the consequences that are felt by the population. This work has as main objective the identification of the decurrent significant consequences of the creation of Ponta Negra s Intensific Use Zone, according to vision of the population of the quarter. The way followed for this involves the compatible bibliography research with the subject, analysis of documents that treat on the quarter, mappings of the area in search of a physical characterization and mainly, an application of questionnaire next to local population. In this questionnaire it is the main point of the necessary collection of data to the work, indicating the point of view of the population not only on the negative points, but also on the positive points that had happened since the creation of Intensific Use Zone. The answers indicate problems of natures social, infrastructure and enviromental, compatible with the problems of other areas that had passed the same for process, as point the studied bibliography, indicating imperfections in the planning process and maintenance of Ponta Negra s Intensific Use Zone

Aujstamento de redes GPS em conformidade com as exigências da Lei 10.267/2001

In Brazil, there have been several GPS applications and with the introduction of the Law 10.267/2001 that among other dispositions, deals with georeferencing of the rural parcels. However, most commercial softwares of processing and adjustment of GPS data don't let users to evaluate their results in a reliable way. For example, the constraints are normally used as absolute, which provides results with very optimists precisions. The adoption of additional analyses and the implementation of softwares can reduce these kinds of problems. Thus, a software for adjustment of GPS networks was developed, aiming at assisting the requirements of the Law 10.267/2001 in a reliable way. In this context, in this work it is analyzed the adjustments of GPS networks, by using absolute and relative constraints. In the latter, the adjustments were accomplished considering and not considering the correlations among the coordinate positions.

Autonomia na lei: as forças armadas nas constituições nacionais

L'objectif de ce travail est d'analyser les différences entre la fonction, la mission et le rôle de l'Armée dans les constitutions brésiliennes, de 1824 à 1988. L'hypothèse en discussion est que la disjonction consacrée constitutionnellement entre la Loi et l'Ordre consolide une limitation à la démocratie en autorisant des interventions dans l'Armée qui vont au-delà de la Loi. Nous défendons que l'autonomie militaire, garantie par les constitutions, rend très difficile la subordination militaire par rapport au pouvoir civil, car cette subordination est nécessaire à la consolidation du régime démocratique.

O adolescente em conflito com a lei e a escola: criminalização e inclusão perversa

This study aims to identify the relation between adolescents in conflict with the penal law, who were convicted to assisted freedom (a socio-educative measure applied by the Juvenile Justice system as a sanction to adolescent offenders), and the school. The research was developed in the Community-based Assisted Freedom Program of Pastoral do Menor , in Fortaleza (capital city of Ceará State, Brazil). The study has engaged 21 adolescents, eight program professionals, three members of the Center for Defense of Child Rights in Ceará, five teachers and eight school principals and education managers from the schools attended by the adolescents in the neighborhoods of Pirambu, Tancredo Neves, Jardim Iracema e Bom Jardim. It intends, based on dialectical and historical method, to define the investigated adolescents as persons with a very singular insertion into the social structures of neoliberal capitalism. Their adolescence is subject to consumerism appeals, to the limits imposed by these appeals and to perverse ways of insertion in the system, such as criminalization, segregation and marginalization. It reveals that the school attended by the adolescents reproduces such conditions of insertion. At the same time, these conditions are elements of identity, by which the adolescents are characterized.

Programa Liberdade assistida em Natal/RN: adolescentes em conflito com a lei e a violação de direitos

This work shows the results of the research: Attended Liberty Program Adolescents in Conflict with the Law and the Disapproval of Rights, effected in the community of Natal, Rio Grande do Norte, in period of august 2007 to September 2008. It aims to analyze the social-educative attendance directed to adolescents in conflict with the law through the state, since the Social-educative Measure Attended Liberty, known, as an idoneous way of confrontation to the practice of infraction acts imputed to the adolescent, that needs to give emphasis, in disadvantage of the Social-educative Measurement of Internment, to be proposed (ECA, art 118 and 199) to follow the adolescent in this quotidian, close to his family and community, proposing him through social-educative work, the access to education and occupancy, as well other public services, that help him to surpass the context of privation and disapproval of rights in which lives joined to his family. In our study, it was observed in sequence of approaching, subsidized for theoretical-methodological procedures justified in quantity and quality research, that were privileged to the documental research, the observation and the interview almost structured, besides a theoretical basis about the subject, that the relation of category and inequality in which the capitalist society sustains itself, does the practice of infraction acts imputed to the adolescent, acquires a classist character, in which the property of the money defines the access of the justice. And more, many of the poor adolescents that get into conflict with the law, dweller of the periphery districts of Natal/RN, becomes evident as for segment that has been attended in the Jurisdiction of the Infancy and Youth and in the LAN of Social-educative Attendance, becoming individual the infraction act and its confrontation. We hope in this work, to contribute for the care of the reality of the adolescent in conflict with the law in the Attended Liberty Program, without pretension to exhaust it, as well as later studies about the theme