411 resultados para Passivo sem vencimento
Resumo:
A má avaliação do passivo judicial pode impactar de modo negativo as disponibilidades financeiras da organização, com consequencias para sua liquidez e para a continuidade das atividades operacionais. O presente trabalho teve como objetivo verificar se o reconhecimento, a mensuração e a evidenciação do Passivo Judicial Trabalhista atendem aos pressupostos da literatura contábil e do direito natural, no que toca ao conceito de fair value. No contexto metodológico, apresentou-se o arcabouço teórico-jurídico do reconhecimento, da mensuração e da evidenciação. Em seguida, dentre as empresas listadas nos segmentos Nível 1, Nível 2 e Novo Mercado da BM&FBovespa foram selecionadas, para a amostra, as 40 empresas com maior quantidade de ações em tramitação no TST. Foram analisadas as Notas Explicativas dessas companhias e verificou-se que, a maior parte não divulga informações alusivas à origem do passivo judicial trabalhista, à forma de mensuração das provisões, à quantidade de ações e ao cronograma de desembolsos. Assim, as práticas adotadas por tais empresas não estão em conformidade plena com os pressupostos da literatura contábil e do direito natural pois as determinações contábeis (CPC 25) tem sido observadas em sua forma menos ampla. Também foi constatado que há possibilidade de melhoria no processo de reconhecimento, mensuração e evidenciação eis que há boas práticas, pontuais, nas companhias examinadas que podem ser generalizadas para as demais.
Resumo:
O uso de materiais inteligentes em problemas de controle de vibração tem sido investigado em diversas pesquisas ao longo dos últimos anos. Apesar de que diferentes materiais inteligentes estão disponíveis, o piezelétrico tem recebido grande atenção devido à facilidade de uso como sensores, atuadores, ou ambos simultaneamente. As principais técnicas de controle usando materiais piezoelétricos são os ativos e passivos. Circuitos piezelétricos passivos são ajustados para uma frequência específica e, portanto, a largura de banda efetiva é pequena. Embora os sistemas ativos possam apresentar um bom desempenho no controle de vibração, a quantidade de energia externa e hardware adicionado são questões importantes. As técnicas SSD (Synchronized Switch Damping) foram desenvolvidas como uma alternativa aos controladores passivos e controladores ativos de vibração. Elas podem ser técnicas semi-ativas ou semi-passivas que introduzem um tratamento não linear na tensão elétrica proveniente do material piezelétrico e induz um aumento na conversão de energia mecânica para energia elétrica e, consequentemente, um aumento no efeito de amortecimento. Neste trabalho, o controle piezoelétrico semi-passivo de uma pá piezelétrica engastada é apresentado e comparado com outros controladores. O modelo não linear electromecânico de uma pá com piezocerâmicas incorporados é determinado com base no método variacional-assintótico (VAM). O sistema rotativo acoplado não linear é resolvido no domínio do tempo, utilizando um método de integração alfa-generalizado afim de garantir a estabilidade numérica. As simulações são realizadas para uma vasta gama de velocidades de rotação. Em primeiro lugar, um conjunto de resistências (variando desde a condição de curto-circuito para a condição de circuito aberto) é considerada. O efeito da resistência ótima (que resulta em máximo amortecimento) sobre o comportamento do sistema é investigado para o aumento da velocidade de rotação. Mais tarde, a técnica SSDS é utilizada para amortecer as oscilações da pá com o aumento da velocidade de rotação. Os resultados mostram que a técnica SSDS pode ser um método útil para o controle de vibrações de vigas rotativas não lineares, tais como pás de helicóptero.
Resumo:
Le travail suivant discute le salaire touché par les professeurs et leur rémunération, face à l’implémentation du Fond de Mantenance du Développement de l’Éducation de Base et Valorisation des Professionnels de l’Enseignement (Fundeb), au Système d’Éducation Public de la Municipalité de la ville de Natal, entre les années de 2007 a 2010. L’objectif est l’analyse des repercussions du Funeb pour la rémuneration des enseignants dans le contexte de la politique de financement de l’Éducation de Base e ses propositions de valorisation des enseignants – revennu et rémunération. L’étude s’est utilisé la recherche bibliographique et documentale, les informations relatives à : Éducatif (inscriptions), rémunération (bulletin de salaire et bulletin de paie), budgétaires (recette et dépense) au ressource – microinformations du recensement scolaire (INEP/MEC), SIOPE/FNDE et lo PCCR de la municipalité (LC nº058/2004), et comme donné comparatif on utilise la rémunération et la valeur du salaire minimum national – actualisé par le INPC. À partir de là, les études montrent que dès la Constitution Fédeérale de 1988, il y a eu des changements dans la structure du financement de l’Éducation par la politique de Fonds, iniciée par le Fundef et continuée par le Fundeb, avec des reflets pour la valorisation des enseignants, spécialement, sur la rémunération. Par rapport au revennu, l’étude montre un réajustement à chaque année qui observe, en 2007, un pourcentage de 23,74%, c’est-à´dire, la plus grande de la série historique. Par l’analyse des donnés de revennus on peut observer que les enseignants, au début de leur carrière, présente des réajustement sur leur revennu et rémunération plus petit que celui du Salaire Minimum National, et pourtant les enseignants de niveau supérieur (N1), spécialisation et maîtrise (N2) ont présenté le même pourcentage de croissance de la rémunération pendant cet étude, qui correspond à 14,7%. Le pourcentage pour le professeur docteur a été noté en 33,9%. Par rapport aux enseignants de plus de temps de service, entre 10 et 15 ans, les pourcentages de réajustement ont été différents, car ils montrent des proportions croissantes selon le niveau de formation et le temps de carrière comme enseignant. Malgré le Fundeb présente des progressions, il ne s’est pas encore configuré comme une politique d’amélioration de salaire pour les enseignants. On remarque que pendant l’analyse, il y a une diminuition de proportion entre la valeur de rémunération e la quantité de salaires minimum composant le total, ce qui configure un procès qui exige de plus grands investissements aux salaires des enseignants.
Resumo:
This study is about the enhancement of the elementary school in Natal/RN, (PCCR - Law No. 058/2004), concerning to the horizontal promotion through the performance evaluation. It uses as reference the education policy on the legislative field hegemony and the managerial model. The analysis of the teacher´s valorization is based on the policy of Funds (Fundef and Fundeb) in the Brazilian social and educational agenda. The study focuses on the Career Plan, Career and Remuneration of teachers in the period (2004-2010).The study focuses on the Career Plan, Career and Remuneration of teachers in the period (2004-2010). The thesis argues for the necessity to adopt a direct relationship between career development and horizontal promotion for more others fifteen classes, no matter to any conditioning variables. In addition, the performance shall be evaluated by interval of 25 years to reach at least the provisions decided in the law, which determines the salary adjustment in 5% at every two years, as pointed at the PCCR, about teachers remuneration, and teachers qualifications. A work of a bibliographic and a documental review about the education funding with the purpose of enhancement of educational work, career concepts, and also promotion and evaluation performance as well was performed based on experts authors in this field. The survey was organized with the aim of articulating quantitative and qualitative information, analyzing data from the teacher's salary - payrolls and paychecks - also applying a questionnaire. After the implementation of the PCCR, it was found that the wage indices for horizontal promotion during the teaching career are tied to a strategy for evaluating the performance which disqualifies the teacher‟s salaries in a minimum percentage of 25% (up to 25 years) and there are also elements that disturb the promotion strategy. The national minimum wage was set in three salaries by the PSPN Lei nº11.738/2008 but it never reaches the three salaries at Natal/RN educational system.Otherwise, the elements that structure the horizontal promotion in fifteen classes, throughout the career, flout the minimum years of teaching work, long established in 25 years. In addition, changes in terms in the salary increase depend on individual efforts by professional development through titration. Concerning to the career, despite of the category approving its PCCR, neither this instrument nor the Funds Policy managed to establish regulations were able to cope effective rules for valuing the teachers in the educational district system. It is necessary to ensure, in percentage terms and financial, the real remuneration of teachers with the attainment of horizontal promotion, reviewing the elements that structure the career and the determinants of performance evaluation.
Resumo:
The assessment of building thermal performance is often carried out using HVAC energy consumption data, when available, or thermal comfort variables measurements, for free-running buildings. Both types of data can be determined by monitoring or computer simulation. The assessment based on thermal comfort variables is the most complex because it depends on the determination of the thermal comfort zone. For these reasons, this master thesis explores methods of building thermal performance assessment using variables of thermal comfort simulated by DesignBuilder software. The main objective is to contribute to the development of methods to support architectural decisions during the design process, and energy and sustainable rating systems. The research method consists on selecting thermal comfort methods, modeling them in electronic sheets with output charts developed to optimize the analyses, which are used to assess the simulation results of low cost house configurations. The house models consist in a base case, which are already built, and changes in thermal transmittance, absorptance, and shading. The simulation results are assessed using each thermal comfort method, to identify the sensitivity of them. The final results show the limitations of the methods, the importance of a method that considers thermal radiance and wind speed, and the contribution of the chart proposed
Resumo:
Distributed generation systems must fulfill standards specifications of current harmonics injected to the grid. In order to satisfy these grid requirements, passive filters are connected between inverter and grid. This work compares the characteristic response of the traditional inductive (L) filter with the inductive-capacitive-inductive (LCL) filter. It is shown that increasing the inductance L leads to a good ripple current suppression around the inverter switching frequency. The LCL filter provides better harmonic attenuation and reduces the filter size. The main drawback is the LCL filter impedance, which is characterized by a typical resonance peak, which must be damped to avoid instability. Passive or active techniques can be used to damp the LCL resonance. To address this issue, this dissertation presents a comparison of current control for PV grid-tied inverters with L filter and LCL filter and also discuss the use of active and passive damping for different regions of resonance frequency. From the mathematical models, a design methodology of the controllers was developed and the dynamic behavior of the system operating in closed loop was investigated. To validate the studies developed during this work, experimental results are presented using a three-phase 5kW experimental platform. The main components and their functions are discussed in this work. Experimental results are given to support the theoretical analysis and to illustrate the performance of grid-connected PV inverter system. It is shown that the resonant frequency of the system, and sampling frequency can be associated in order to calculate a critical frequency, below which is essential to perform the damping of the LCL filter. Also, the experimental results show that the active buffer per virtual resistor, although with a simple development, is effective to damp the resonance of the LCL filter and allow the system to operate stable within predetermined parameters.