Iluminação de exteriores utilizando tecnologia LED: estudo de caso

This Graduate Work aims to exhibit the analyze of the applicability of LED technology in a real outdoor lighting situation, and this project’s illumination solution is compared with the initial proposal, the sodium vapor lamps. What is studied is an outdoor area, like the roads and parking lots of a plant. A light planning software is used for this comparison, and the results are displayed instantly, allowing rapid analysis of the project through a simulation. The medium illuminance is the same in both solutions for this case study and minimum rates set as standard were observed then the analysis are appropriate in this project. Various aspects are considered in order to obtain a comprehensive analysis of this project, such as economic, environmental and quality of lighting. LED technology in outdoor lighting is presented in its infancy, but promising. Solid state lamps show great advantages when compared with other technologies, such as discharge lamps, however there are some disadvantages tied to new products that are expected to be overcome with technological development and increased production

Plano de iluminação externa da UNESP Campus Itapeva com base em LED e energia solar

This work presents the development of the External Lighting Plan UNESP in the Itapeva Campus based LED and Solar Energy. Firstly it was made a collection of data from measurements of the local transit through the Google Earth 6 software and divide the local in sectors, and then perform an analysis of characteristics and age of the site. With these data it was possible to determine the average luminance the place, in30 lux. After these procedures was possible to determine the type of sets that would perform the role of bridge lighting the kit chosen was the 20/20 Sun LED manufacturer, since it contains the luminaire with the solar panel to the pole. Therefore we determined the number of poles for each sector, whichwas72in total and. After the determination of the location of each point lighting

Análise da influência da iluminação de rodovias federais com a redução do número de acidentes

The increasing rate of traffic accidents, followed by the high rate of mortality due to these occurrences, favored to the classification of traffic accidents as a public health problem in Brazil. These accidents consume a significant portion of Gross Domestic Product (GDP), especially related to the victims. Considering this scenery with many tragedies and resources being spent only in the end, this paper seeks to examine the influence of federal highways lighting by reducing the number of accidents. Federal Highways sections that received lighting were taken up for study, therefore a survey of statistical data has been raised considering the accidents before and after the route had been illuminated. Taking advantage of the results obtained, an economic analysis has been made considering the amounts consumed by traffic accidents versus the values required for the installation of lighting on highways

Estudo sobre iluminação e banco de capacitores de uma típica indústria metalúrgica

The use of electricity for obtaining light has been quite an issue currently discussed, either through new technologies that are emerging, the quest for greater efficiency, reduced waste and rational use. This work comprises a lighting design applied to a metallurgical based Brazilian Standard 5413 which mentions levels of luminance for interior and, in the case of this work, for a sandblasting booth. Ways to improve the workplace and luminosity presented before the project and also after its implementation are discussed. Technologies are chosen guided by technical calculations according to the illuminance values they want to reach for the environment studied. All pertinent design features are critically analyzed and discussed, and at the end proposals are presented, relating to each other in a comparative framework, so the best solution is applied in a practical way in the enclosure. Results are also presented concerning the maintenance of a bank of capacitors to correct the power factor for the metals studied company

Junção em mudança: reanálise morfossintática e redes polissêmicas de 'que nem'

Neste trabalho, analiso aspectos da constituição e do uso do juntor que nem, em dados da modalidade de enunciação falada do português. A questão maior é mostrar que a inserção de que nem no paradigma dos juntores, por meio de processos de gramaticalização, resulta em quatro novos padrões funcionais, que refletem uma rede de parentesco semântico no domínio das relações modais. As construções com que nem são descritas a partir do pareamento entre forma e significado, com o propósito de defender que arquiteturas sintáticas diferenciadas contribuem para a interpretação da polifuncionalidade semântica de que nem; e que as fontes sincrônicas do português ajudam a desvendar etapas do processo de reanálise de que e nem, tendo em vista as tendências diacrônicas sobre mudança de juntores nas línguas (Kortmann, 1997).

O estatuto teórico-metodológico do falado e do escrito para a pesquisa em mudança linguística

The objective of this paper is to reflect on the theoretical and methodological status of oral and written data as a source for investigating linguistic change phenomena. The per - spective we adopt here distances itself from a compartmentalized conception of oral and writ - ten texts writing since it is more closely associated with the writers’ relationship with historically and socially established practices of orality and literacy. We conducted an assessment of some of the specialized literature in order to gather arguments to defend the coexistence of written and oral enunciations, understood not as a form of interference, but as a constitutive blend, which, given its hybrid nature, enables the occurrence of the vernacular data, a locus of change also present in written records.

Evolucionismo linguístico: um paralelo entre evolucionismo biológico e mudança linguística

The comparison between linguistic change and biologic evolution is a subject that has caused and still causes much controversy among linguists and other academics that see, in this parallel, problems related to similar attempts in the nineteenth century by Social Darwinism, which approached the biological evolution with social and cultural development of a people. However, this paper aims to show that today this parallel is not built in the same way as was done before. Names like William Labov, Salikoko Mufwene, Jonathan West and Hildo Honorio do Couto in linguistics; Charles Darwin in biology; and Tom Ingold and Clifford Geertz in anthropology, showed that areas of Humanities, such as linguistics and anthropology, and of Biological Sciences, as phylogeny and genetics, are likely to be worked together by the great similarities between processes that compose them. Thus, based on the writings of these authors and some others, this paper presents this theme’s controversy; it shows the similarities between characteristics of languages and species; it seeks through the concepts MA Mental, MA Social and MA Natural of the languages (coined by Couto on Linguística, ecologia e ecolinguística: contato de línguas) to develop ideas of how it is possible to think the language change in the light of Darwin's concept, Natural Selection; and finally, it shows that the parallel theme is rather productive, based on the texts and discussions presented in the whole paper, and that the controversy has been being dissolved with more and more people working on the parallel between language and species

Desenvolvimento de um conversor estático PWM para o acionamento de LED’S para iluminação publica

This work deals with the development of a switched-mode power supply circuit based on a Buck topology converter with a Boost Rectifier One-Cycle Control with Power Factor Correction developing, thus, a source of direct current for a module of 50 power LEDs that will be used in a lamp for public street lightning. It is presented, at first, some aspects about the most common technologies used in lamps of public street lightning in Brazil and a comparison with the White LED high power, which is the one that presents itself as the most promising among the existing market. Then it is presented the detailed development of the static converter switched PWM, consisting of a Boost rectifier with power factor correction and methodology of control One-Cycle Control associated with a Buck converter controlled by a PI method that operates as a direct current source . At the end of the simulation results of the circuit through the PSIM software are presented to verify the design behavior

Mudança política no Paraguai e as relações com o Brasil: o caso da renegociação do Tratado de Itaipu

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação temporal e espacial do balanço de radiação, de energia e da evapotranspiraçâo no noroeste paulista, face a mudança no uso do solo

Pós-graduação em Agronomia - FEIS

Mudança social e cultural no Brasil nos últimos 50 anos: cenário e perspectivas para a melhoria do ensino público

Thinking about improving public education in Brazil means thinking not just what we wish to develop competencies and skills in individuals, but understands clearly identify the type of citizens who are training and what kind of society we want for the future. So if there are social and cultural changes they should have their comtraponto within the classroom considering education steeped in culture and therefore in the forms of modern communication. The challenge for school education is to show the students inside the classroom, as will be outside.

A norma-padrão Europeia e a mudança linguística na Escola Moçambicana

In Mozambique, the portuguese language is considered the official language, second language, national language and competes with more than twenty Bantu languages spoken by the majority of population. The standard norm lose away their floor to the Mozambican Portuguese which carries own characteristics pertaining to the sociolinguistic context of the country. Schools attempt their best, but they cannot teach the European standard due the multilingual and Portuguese contact with African languages, a fact that is reflected in the media and in the literature through their oral and written forms. These difficulties result in high rates of failures due to problems encountered in using the European standard by teachers and writers who prepare the school books. This research suggests the standardization of the Mozambican variant as well as the preparation of dictionaries and grammars illustrating the sociolinguistic reality of Mozambique in order to improve the quality of education. It also emphasizes the need for a self-esteem spirit on Mozambicans in general as a conduit to eliminate the soaring bias that Mozambicans can not speak portuguese language

Variação e mudança linguística: panorama e perspectivas da sociolinguística variacionista no Brasil

Since the 1970s many research groups have emerged in Brazil in the area of Sociolinguistics, seeking to investigate language in relation to social factors that distinguish different speech communities to deconstruct the idea of linguistic homogeneity. Many of the works have been based on variationist sociolinguistics (LABOV, 2008 [1972]), for which variation and change are inherent to languages, i.e., heterogeneous structures are part of the speakers’ linguistic competence, as a cultural phenomenon motivated by linguistic and extralinguistic factors. Our aim, in this article, is to address the paths of Sociolinguistics since its beginning as a science, focusing mainly on the variationist strand, by recalling its key-concepts and methodology, and to present an overview of the research works conducted in Brazil in this field nowadays.

Contribuições teóricas e metodológicas para a constituição de corpora em pesquisa de variação/mudança linguística

This papers deals with theoretical and methodological problems concerning the definition of criteria for the selection of sources for the study of language. Our work discussed the use and the importance of genre in the process of corpora construction as variation search – synchronic and diachronic.

Variação e mudança lexical no português brasileiro do século XX: um estudo descritivo-comparativo

In this article, we analyze only the processes of lexical expansion related to the reuse and recontextualization of words. We selected 50 names of animals in Brazilian Portuguese (PB). These words were found in two dictionaries and only the definitions connoting human actions and attributes were used. Through this study linguistic principles that are practically consensual were confirmed. We highlight the polissemic phenomenon as one of the factors that most contribute to the economy of the linguistic system.