ABSTRACT In many situations, the Brazilian Legislation does not require verifying roof structures in a fire, since their failure will not endanger the stability of the structure. In fire, the steel roof of an industrial building deforms by heating in geometry similar to a catenary, resulting in horizontal forces in the upper extremities of the columns. Thus, even roofs that do not constitute a frame with the columns may lead them to collapse, and should therefore be protected against fire. Due to the small dimensions of the structural elements of the roof, fire coating is uneconomical. There is thus a problem in the design practice. A procedure based on the British literature in which horizontal load is considered in the columns is presented in this paper. Columns and foundations must support that load. That load should be determined and the columns should be checked for fire situation. The aim of this paper is to detail this procedure, adapt it to Brazilian standards and apply it to a case study.
Schwarcz, L. M. (2019). Sobre o autoritarismo brasileiro. São Paulo: Companhia das Letras.La obra Sobre o autoritarismo brasileiro, de Lilia Moritz Schwarcz, reúne una serie de datos, investigaciones e información histórica para apoyar importantes discusiones actuales. La autora se muestra perspicaz en el acto de desentrañar la realidad al relacionar lo que estamos viviendo con puntos anteriores de nuestra historia nacional y, definiendo como eje central el autoritarismo que refleja en varios puntos discutidos en la obra, reafirma la relevancia del estudio del pasado para la construcción del sentido crítico, necesario para fomentar la reflexión sobre las realidades vividas por ciertos grupos de la sociedad. Un libro breve y directo, que lleva el lector a pasear la mirada por un contenido que arroja luz sobre el enmarañado pensamiento de nuestros días, engendrado a lo largo de nuestra formación nacional, que dificulta vislumbrar las formas de autoritarismo establecidas en nuestras relaciones económicas, políticas y sociales.
Schwarcz, L. M. (2019). Sobre o autoritarismo brasileiro. São Paulo: Companhia das Letras./nLa obra Sobre o autoritarismo brasileiro, de Lilia Moritz Schwarcz, reúne una serie de datos, investigaciones e información histórica para apoyar importantes discusiones actuales. La autora se muestra perspicaz en el acto de desentrañar la realidad al relacionar lo que estamos viviendo con puntos anteriores de nuestra historia nacional y, definiendo como eje central el autoritarismo que refleja en varios puntos discutidos en la obra, reafirma la relevancia del estudio del pasado para la construcción del sentido crítico, necesario para fomentar la reflexión sobre las realidades vividas por ciertos grupos de la sociedad. Un libro breve y directo, que lleva el lector a pasear la mirada por un contenido que arroja luz sobre el enmarañado pensamiento de nuestros días, engendrado a lo largo de nuestra formación nacional, que dificulta vislumbrar las formas de autoritarismo establecidas en nuestras relaciones económicas, políticas y sociales. ; Schwarcz, L. M. (2019). Sobre o autoritarismo brasileiro. São Paulo: Companhia das Letras./nA obra Sobre o autoritarismo brasileiro, de autoria de Lilia Moritz Schwarcz, reúne uma série de dados, pesquisas e informações históricas para embasar importantes discussões da atualidade. A autora é perspicaz no ato de destrinchar a realidade por relacionar o que estamos vivendo com pontos anteriores da nossa história nacional e, definindo como eixo central o autoritarismo que reflete em vários pontos discutidos na obra, ela reafirma a relevância do estudo do passado para a construção do senso crítico, necessário para fomentar a reflexão sobre as realidades vivenciadas por determinados grupos da sociedade. Um livro curto e direto, leva o leitor a folhear um conteúdo capaz de lançar luz sobre o pensamento emaranhado do presente, engendrado no decorrer de nossa formação nacional, que dificulta o vislumbre das formas de autoritarismo fixadas em nossas relações econômicas, políticas e sociais. ; Schwarcz, L. M. (2019). Sobre o autoritarismo brasileiro. São Paulo: Companhia das Letras./nThe book Sobre o autoritarismo brasileiro, authored by Lilia Moritz Schwacz, brings a set of data, deep research and historic information to support an important present discussion. The authoress is insightful in the act of unraveling the reality by relating what we are living with previous points of our national history and, defining as central axis the authoritarianism, which reflects in several points discussed in the book, she reaffirms the relevance of the study of the past for the construction of a critical sense, necessary to foment the reflection about the realities experienced by certain groups of society. The book, short and straight to the point, takes the reader to flip through contents that can shed light on the tangles of the present thinking engineered during the construction of our nation, which complicates the comprehension of the forms of authoritarianism fixed in our economic, politic and social relations.
A high-occupancy elementary school building recently retrofitted, with low energy consumption and no central climatization systems for heating, cooling and ventilation, located in the North region of Portugal was widely monitored to assess radon risk as a measure of indoor air quality. The experimental campaign was implemented in the spring of 2018 and during a period of one month, the radon gas concentration was continuously assessed. The main goal of the study is to evaluate the influence of variables such as the occupancy, the location of the monitored rooms and ventilation actions that were undertaken, to effectively evaluate the risk to radon exposure in a scenario of very low energy spent for heating, cooling and ventilation. The final results showed that 46% of the rooms exceeded the limit of 300 Bq.m-3 imposed by the Portuguese legislation in force. However, when considering a dosimetric approach reflecting the school building occupation profile (SBOP), by the calculation of the Indoor Annual Effective Dose (IAED), 93% of the rooms were above the occupational dose limit of 1 mSv/year, recommended by the International Commission on Radiological Protection (ICRP). Based on the results, there is evidence that the risk associated to the exposure to radon gas in indoor environments does not depend only on its concentration in the monitored room, but also on the number of occupants, period of occupancy, ventilation rate and on the location of the room in the building.
Based on bibliometric exercises, this article discusses the national and international scientificproduction on the Brazilian contemporary city and its forms of management. Authors discuss theoutstanding recurrence of certain research topics on the debate of urban matters by the Brazilianacademy and the relation between such academic approach and the urban management practice. Itis in fact a discussion on the recurrence of certain topics among Brazilian urban scientific researchesand their appropriation by the practice of urban management by governmental agencies. This is adiscussion on priorities given by Brazilian urban science, approaches adopted, their novelties, theirthematic recurrences, and the way urban management practices react to this set of characteristics.Timeframe adopted begins in the 1990´s and finalizes in 2007. Source of information used is thethesis and dissertations data base of the National Council for Scientific and TechnologicalDevelopment (CAPES). This database now makes available the almost entire post-graduationproduction in the country. Discussion is so based on the way Brazilian academy sees the urbanphenomenon we now live in by investigating the possible reasons for thematic choices of research,priorities given certain by specific scientific areas, the contemporaneousness of these researchesas well as their possible anachronism. Despite the fact that the research prioritizes Brazilian city,discussion brought here may be contextualized in other urban realities. Main conclusions concernthe observation of a restrict contemporaneousness in a great part of researches, a low adherenceto urban management procedures, and a call for a necessary review of priorities in terms of supportgiven by scientific agencies to future research projects. ; A partir de ejercicios bibliométricos, el documento presenta un análisis de laproducción científica brasileña e internacional frente a los fenómenos que caracterizan laciudad contemporánea y sus formas de gestión. Aquí se discute la recurrencia de ciertostemas en la investigación de la academia brasileña y la relación entre este pensamientocientífico y la práctica de la gestión urbana de las instancias de gobierno. En este artículo sediscuten, por un lado, los intereses de la academia, su enfoque, su singularidad y su recurrenciatemática; por otro, la apropiación de esas prioridades urbanas por los diferentesniveles de gestión gubernamental. El marco temporal del análisis comienza en los años1990 y termina hacia finales de la década. La fuente de información principal es la base dedatos de tesis y disertaciones de la Coordinación de Perfeccionamiento de Personal de NivelSuperior (CAPES), que actualmente reúne casi la totalidad de los resultados de investigaciónde postgrado en Brasil. El artículo aporta un debate académico sobre el fenómeno urbanocontemporáneo en Brasil y trata de provocar la investigación en torno a las razonesque explican las opciones temáticas de los investigadores y sus prioridades, según las principalesáreas de la ciencia, sus contemporaneidades y sus anacronismos. El artículo centrala discusión en la ciudad brasileña, pero puede ser llevado a un debate más amplio: el de larelación entre la producción académica y su apropiación por parte de los usuarios finales.Las principales conclusiones se refieren a la reducida contemporaneidad de la investigaciónurbana, su baja adhesión con la práctica de la gestión urbana y la discusión necesaria sobrelas prioridades de los organismos de financiación científica.
ABSTRACT Purpose: This article aims to describe the absorptive capacity (ACAP) of textile manufacturing industrial companies of Sergipe state, Brazil, for the signals captured from the environment, indicating the need for innovation in response to changes in the market. The theoretical bases of absorptive capacity postulate that a company that develops this capacity has the ability to recognize the information value, assimilate it, and apply it for commercial purposes. They can develop skills that allow them to achieve competitive advantage. Originality/value: From the theoretical point of view, the factors that stimulate the apparel companies to recognize, assimilate, transform, and exploit the external knowledge were listed. Regarding the practical contributions, the study can provide references to organizations wishing to extend or develop the absorption of new knowledge, so this can promote improvement in organizational activity and innovation. Design/methodology/approach: For the study, it was built a qualitative data collection instrument. The instrument had been applied in seven companies with innovative characteristics when compared to the local competition. Companies are micro to medium-sized and develop innovations in process and marketing. Findings: The result shows that the analyzed companies look for renewal of existing knowledge and assimilate the external information to adapt and transform their organizational strategies. The exploitation of knowledge occurs from relationships with customers and suppliers, prior knowledge of leadership and organization existing structure. Companies with best ACAP were those who faced direct competition. This fact has created incentives for the search for information to differentiate the companies and make them competitive.
A partir de ejercicios bibliométricos, el documento presenta un análisis de laproducción científica brasileña e internacional frente a los fenómenos que caracterizan laciudad contemporánea y sus formas de gestión. Aquí se discute la recurrencia de ciertostemas en la investigación de la academia brasileña y la relación entre este pensamientocientífico y la práctica de la gestión urbana de las instancias de gobierno. En este artículo sediscuten, por un lado, los intereses de la academia, su enfoque, su singularidad y su recurrenciatemática; por otro, la apropiación de esas prioridades urbanas por los diferentesniveles de gestión gubernamental. El marco temporal del análisis comienza en los años1990 y termina hacia finales de la década. La fuente de información principal es la base dedatos de tesis y disertaciones de la Coordinación de Perfeccionamiento de Personal de NivelSuperior (CAPES), que actualmente reúne casi la totalidad de los resultados de investigaciónde postgrado en Brasil. El artículo aporta un debate académico sobre el fenómeno urbanocontemporáneo en Brasil y trata de provocar la investigación en torno a las razonesque explican las opciones temáticas de los investigadores y sus prioridades, según las principalesáreas de la ciencia, sus contemporaneidades y sus anacronismos. El artículo centrala discusión en la ciudad brasileña, pero puede ser llevado a un debate más amplio: el de larelación entre la producción académica y su apropiación por parte de los usuarios finales.Las principales conclusiones se refieren a la reducida contemporaneidad de la investigaciónurbana, su baja adhesión con la práctica de la gestión urbana y la discusión necesaria sobrelas prioridades de los organismos de financiación científica. ; Based on bibliometric exercises, this article discusses the national and international scientificproduction on the Brazilian contemporary city and its forms of management. Authors discuss theoutstanding recurrence of certain research topics on the debate of urban matters by the Brazilianacademy and the relation between such academic approach and the urban management practice. Itis in fact a discussion on the recurrence of certain topics among Brazilian urban scientific researchesand their appropriation by the practice of urban management by governmental agencies. This is adiscussion on priorities given by Brazilian urban science, approaches adopted, their novelties, theirthematic recurrences, and the way urban management practices react to this set of characteristics.Timeframe adopted begins in the 1990´s and finalizes in 2007. Source of information used is thethesis and dissertations data base of the National Council for Scientific and TechnologicalDevelopment (CAPES). This database now makes available the almost entire post-graduationproduction in the country. Discussion is so based on the way Brazilian academy sees the urbanphenomenon we now live in by investigating the possible reasons for thematic choices of research,priorities given certain by specific scientific areas, the contemporaneousness of these researchesas well as their possible anachronism. Despite the fact that the research prioritizes Brazilian city,discussion brought here may be contextualized in other urban realities. Main conclusions concernthe observation of a restrict contemporaneousness in a great part of researches, a low adherenceto urban management procedures, and a call for a necessary review of priorities in terms of supportgiven by scientific agencies to future research projects.
Particulate composites of ferrite and ferroelectric polymer phases with general formula [xCoFe2O4]/[(1-x) PVDF] were prepared for x = 0, 3, 11 and 20 wt.% by solution casting. The dielectric constant, dielectric loss and saturation magnetization of the polymer composite films increase with increasing CoFe2O4 (CFO) content, being 13, 0.13 and 13 emu.g-1 respectively, for x=20. The magnetodielectric (MD) coupling also depend on the CFO content, the change in the dielectric response (MDE(%)) being the highest for the x=20 sample (4.2%). On the other hand, the highest value of the MD coefficient (γ) is higher on the x=3 sample (0.015 emu-2g2). Those values are favourably compared with the ones found in the ceramic-based MD materials, being the highest reported for polymer composites. These facts, together with the flexibility and scalable production of the composites, leads to their large application potential in areas such as filters, magnetic field sensors and actuators, among others. ; The authors thank the Portuguese Fundação para a Ciência e Tecnologia (FCT) for financial support under projects PTDC/EEI-SII/5582/2014 and PTDC/CTM-ENE/5387/2014.P. M. and M. Silva acknowledges also support from FCT (SFRH/BPD/96227/2013 and SFRH/BD/70303/2010 grants respectively). Financial support from the Basque Government Industry Department under the ELKARTEK Program is also acknowledged. SLM thanks the Diputación Foral de Bizkaia for financial support under the Bizkaia Talent program; European Union's Seventh Framework Programme; Marie Curie Actions – People; Grant agreement nº ...
SummaryThis paper aims to describe the nutritional status of Caboclo adolescents living in two areas of the Amazon Basin. Two cross-sectional studies, the first in the dry and the second in the wet season, were carried out in two Amazonian ecosystems: the forest and black water ecosystem, and the floodplain and white water ecosystem. Measurements of weight, stature, arm circumference and triceps, subscapular and suprailiac skinfolds were performed on 247 adolescents (10–19 years of age). Nutritional status was classified using body mass index according to international criteria and the prevalence of underweight and overweight was estimated. Linear mixed effects models were used with the anthropometric measurements as dependent variables and time interval, place of residence, sex, age and stature variation as independent variables. During the wet season, the prevalence of overweight among girls was higher in the forest (42%) than in the floodplain (9%). Longitudinal linear regression models showed that the arm circumference measurement was influenced both by seasonality and location, revealing that the increment between dry and wet seasons was less pronounced in the floodplain. At the time of the study, overweight already constituted a major public health concern among girls living in the forest area. In order to develop adequate public health policies for this important segment of the Amazon population further studies are necessary to investigate the role of environment and seasonality on the growth and nutritional status of adolescents.
In Portugal, the initial training of teachers for the first three levels of education (children from 3 to 12 years old) is carried out through a single 3-years undergraduate degree, called Basic Education. This training is completed with a professional master's degree where future teachers choose which levels they will teach. Most master's degrees cover two levels of education: pre-school and 1st cycle or 1st and 2nd cycles. This means that most teachers become qualified to teach the 1st cycle, usually known as elementary school. First cycle teachers teach all educational areas, including mathematics. It is, therefore, essential that they finish their degree in Basic Education with a solid background in Mathematics. Until the academic year 2017-18 there was no mandatory entry requirement in Mathematics to the Basic Education Degree and many students were admitted without having had any Mathematics in secondary education. To ensure a better pre-university training in Mathematics, the Portuguese government imposed an admission exam, as from the academic year 2018-19. This work aims to assess the impact of the government measure on the training of future teachers in the area of mathematics, through the analysis of the performance of students in the 1st year of the Basic Education Degree, from a Portuguese university, in a mathematics course of the 1st semester, over the academic years 2017-18 to 2019-20. The statistical study carried out reveals that there were significant improvements in the results of the students. An analysis of the gender tendency in the choice of the teaching profession was also done and showed that there is a disproportion between men and women in pre-service teachers, since most young people who want to become teachers are female. This study contributes to a better understanding of the impact certain measures and policies can have on the quality of Higher Education academic training. This type of approach can be applied to other similar situations, for other programs and other courses, ...
ABSTRACT Purpose: The purpose of this study was to analyze the effect of investor sentiment on the volatility of the Brazilian stock market. Specifically, it aimed to identify if the asymmetric behavior of sentiment could be observed in emerging markets, considering companies that have characteristics that are difficult to price. Originality/value: Unlike most studies on investor sentiment, this study focuses on its impact on the stock market volatility, as well as on the characteristics of companies associated with difficult pricing. Design/methodology/approach: The volatility of the IBRX100 index was used to represent the Brazilian stock market, and as a proxy for investor sentiment it was selected Miranda's index (2018), based on market data. Data were estimated using the two-stage least squares (MQ2E) technique to address endogeneity problems. Finally, the volatility of companies with difficult-to-price characteristics was segregated to analyze their sensitivity to sentiment. Findings: The results indicate that sentiment has a negative and sig nificant relationship with the volatility of the Brazilian market, as well as evidences an asymmetrical behavior, being statistically stronger in pessimistic periods. Additional analyzes evidence that the explanatory sentiment capacity is sensitive to companies' characteristics, but only companies with a high book-to-market ratio showed asymmetric behavior, as expected by the literature. The portfolios segmented by size and illiquidity maintained an asymmetric behavior, but it was the volatility of the large companies and the less illiquid ones that were best explained by sentiment, indicating that the Brazilian market has distinctive characteristics in relation to developed markets.
O presente trabalho tem por objetivo estimar modelos matemáticos que projetem quotas per capita de água em cada classe de rendimento (alta, médio-alta, média, médio-baixa, baixa) a partir de variáveis intervenientes no município de Cuiabá-MT. Os resultados indicaram a variável econômica como variável explicativa (tarifa da água), e as climáticas, pouco relevantes ao estudo. Foram propostos modelos matemáticos à projeção de quota per capita de água para as classes de rendimento alta e médio-alta. As baixas correlações entre a quota per capita e variáveis dependentes não permitiram a estimativa de modelos matemáticos às classes de rendimento média, médio-baixa e baixa.
