JOB MATCHING, TECHNOLOGICAL PROGRESS AND WORKER-PROVIDED ON-THE-JOB TRAINING

According to data from the OCDE, almost one third of the total quantity of on-the-job training is worker-provided. The aim of this paper is to study, in a labor market characterized by frictions, the effects of technological progress on the optimal worker-provided on-the-job training. The paper shows that the greater the technological progress rate less is the probability of the worker investing in specific human capital, if the technology is of creative destruction type, and the greater is the probability of the worker investing specific human capital, if the technology is characterized by renovation; whilst the effect over the general human capital investment doesn't exist in both models. The paper also shows that the impact of human capital investments on labor market outcomes depend on the type of investment - either firm or the market oriented. If the investment is totally aimed at the market, we have as a result an increase in the rate of unemployment, whilst if the investment is totally directed at the firm, we have the opposite effect.

THE EVOLUTION OF THE DESIGN AND CONSTRUCTION OF MASONRY BUILDINGS IN BRAZIL

This paper presents an overview of the use of masonry in Brazil. Some historical remarks are presented showing how masonry was introduced and has been developed in the country. A brief on the Brazilian Universities is also reviewed, showing the extensive efforts made to improve the educational system and to insert Brazil into the international masonry research environment. Current materials are shown, focusing on the use of structural and non-structural masonry. The paper points out the development of Codes, considering the most important regulated characteristics of masonry in order to be used in Brazilian constructions. The building situation is addressed, stressing the large housing demands and how the masonry industry can help to partly solve the problem. Finally, present and future challenges are discussed, showing Brazil’s constructions needs, as an emerging country

Perdas produtivas nas operações pré-abate de frangos de corte : efeito da distância entre as granjas e os abatedouros e do tempo de espera em galpão climatizado

Avaliou-se o efeito do tempo de espera pré-abate no bem-estar e na mortalidade de frangos de corte transportados em diferentes distâncias granjas-abatedouro. Foram avaliados 215 caminhões de transporte de um abatedouro comercial, entre os anos de 2006 e 2007. Os dados foram obtidos no galpão de espera, climatizado por meio de ventiladores e nebulizadores, nos períodos manhã, tarde e noite. As variáveis térmicas (temperatura e umidade relativa), distância, tempo de espera e densidade de aves por caixa foram consideradas na análise. Destacaram-se os efeitos da distância e do tempo de espera na variação da temperatura retal dos animais e do número de aves mortas por caminhão. Foram desenvolvidos dois modelos (média e dispersão) para cada variável-resposta, em função da interação entre tempo de espera e distância. Com o aumento do tempo de espera nos galpões, reduziu-se a temperatura retal das aves, para todas as distâncias estudadas. Em distâncias granjas-abatedouro superiores a 25 km, a mortalidade foi baixa quando o tempo de espera adotado foi inferior a 1 hora. No mesmo intervalo de tempo para distâncias abaixo de 25 km, no entanto, o número de aves mortas dobrou em relação à primeira situação. O ajuste do tempo de espera deve ser feito de acordo com a distância, desde que o ambiente de espera seja devidamente climatizado. ________________________________________________________________________________________ RESUMOThis work aimed to assess the effects of preslaughter lairage time on the welfare and mortality of broilers transported in different farm-abattoir distances. It was evaluated 215 poultry transport trucks from a commercial poultry slaughterhouse from 2006 to 2007. Data were obtained from the holding area acclimatized through fans and water misting in the mornings, afternoons and at night. The thermal variables (temperature and relative humidity), distance, lairage time and density of birds per cage were considered in the analysis. The effects of distance and lairage time were important in the variation of rectal temperature of the animals and on the number of dead animals per truck. Two models were developed (mean and dispersion), for each response variable in function of the interaction between lairage time and distance. As the lairage time in the holding area increased, the rectal temperature of the birds was reduced for all the studied distances. In farm-abattoir distances higher than 25 km, mortality was low when lairage time was lower than 1 hour. However, for distances below 25 km, in the same time interval, the number of dead birds was two-fold higher than in the first situation. The adjustment of lairage time has to be done accordingly to the distance provided that the lairage environment is correctly climatized

Inequalities for characteristic numbers of flags of distributions and foliations

We prove inequalities relating the degrees of holomorphic distributions and of holomorphic foliations forming a flag on $\mathbb{P}^n$. Such inequalities are inspired by the so called Poincar\'e problem for foliations.Comment: Several minor clarifications and correction

PROGRAMA UNIVERSIDADE PARA TODOS (PROUNI): POSIÇÕES FAVORÁVEIS E CONTRÁRIAS AO PROGRAMA

Resumo: O objetivo deste trabalho foi discutir as políticas públicas de ensino superior relacionadas ao Programa Universidade para Todos (PROUNI), destacando os argumentos favoráveis e contrários a este programa. Para a realização deste estudo levou-se em conta o período marcado pelo processo de abertura econômica a partir dos anos 90 e pelo crescimento do ensino superior. A metodologia adotada consistiu na análise crítica das principais referências favoráveis e contrárias ao programa ao longo dos setes anos sua criação em 2004. Enquanto os defensores do programa destacam a criação de oportunidades educacionais para jovens das classes menos favorecidas e a consequente democratização da educação superior brasileira, seus críticos denunciam a ilegalidade constitucional das isenções fiscais concedidas a instituições privadas de educação superior e a precária ou falsa democratização deste nível de ensino em razão da má qualidade do ensino oferecido

Tecnologia e educação: introdução à competência tecnológica para o ensino online

O uso da tecnologia na educação, inclusive na educação a distância e ensino semipresencial, demanda novos papéis para professores. Este artigo enfoca o ensino em contextos online, destacando a necessidade de uma abordagem interdisciplinar para a discussão de educação, tecnologia e língua. O foco deste trabalho está na discussão da importância de desenvolvimento da competência tecnológica de professores para a educação online. Abstract:The use of technology in education, including distance learning and blended learning, demands new roles for teachers. This article focuses on teaching in online contexts, highlighting the necessity of an interdisciplinary approach to discuss education, technology and language in teacher education and training. The focus of this paper is on discussing the importance of developing teachers’ technological competence for online education

Afinal, o que são estratégias de aprendizagem de línguas?

Este artigo apresenta diferentes definições de estratégias de aprendizagem, com o foco em pesquisas em Linguística Aplicada e Educação. As definições são discutidas com base na cronologia das publicações. Pretende-se com este trabalho proporcionar melhor compreensão sobre este tema, que é amplamente estudado no ensino de línguas estrangeiras

THE EVOLUTION OF THE DESIGN AND CONSTRUCTION OF MASONRY BUILDINGS IN BRAZIL

This paper presents an overview of the use of masonry in Brazil. Some historical remarks are presented showing how masonry was introduced and has been developed in the country. A brief on the Brazilian Universities is also reviewed, showing the extensive efforts made to improve the educational system and to insert Brazil into the international masonry research environment. Current materials are shown, focusing on the use of structural and non-structural masonry. The paper points out the development of Codes, considering the most important regulated characteristics of masonry in order to be used in Brazilian constructions. The building situation is addressed, stressing the large housing demands and how the masonry industry can help to partly solve the problem. Finally, present and future challenges are discussed, showing Brazil’s constructions needs, as an emerging country