Os estilos de liderança dos líderes escolares da Região Autónoma da Madeira

A liderança é um conceito que tem sido alvo de várias interpretações e definições no último século. O líder, em geral, tem sido visto como alguém que possui determinadas características inatas ou adquiridas, alguém que se adapta às circunstâncias e ao contexto em que a organização se insere e alguém que gere conflitos e exerce influência em ambientes ambíguos, complexos e incertos. O professor enquanto gestor/líder escolar pode assumir diferentes estilos/comportamentos na liderança da sua organização escolar: transformacional, transaccional e “laisser-faire”. Os principais «constructos» de liderança – transformacional, transaccional e passiva – formam um novo paradigma, teoria full range (Brass e Avolio, 2004) para a compreensão dos efeitos do estilo de liderança. A análise do impacto que alguns indivíduos têm sobre as suas organizações tem despertado um interesse crescente. Esses indivíduos podem ser chamados líderes carismáticos (Weber, 1968) ou transformacionais (Bass, 1985; 1990) que são líderes que, através de sua visão pessoal e de sua energia, inspiram os seguidores e têm um impacto significativo em suas organizações. Nas suas investigações sobre o conceito de liderança, Bernard Bass (1985) e Avolio (1999) comparam dois tipos de comportamento de liderança: transaccional e transformacional. Os líderes transaccionais determinam o que os subordinados precisam para realizar seus próprios objectivos e os objectivos da organização. Em contraste, os líderes transformacionais “motivam-nos a fazer mais do que originalmente esperávamos realizar” (Bass 1985, p. 28) elevando nosso sentimento da importância e do valor de nossas tarefas, “fazendo-nos transcender nossos interesses pessoais em nome da equipa, da organização ou de uma política mais ampla” (Bass,1985, p. 29) e elevando nosso nível de necessidade para as necessidades mais altas,como a auto-realização. Este estudo de investigação tem por fim determinar o modo como os docentes percepcionam a liderança das suas organizações escolares: transformacional, transaccional ou “laisser-faire”. Foi utilizado como instrumento de recolha de dados o Multifactor Leadership Questionnaire (MLQ) desenvolvido por Bass e Avolio (2004) o qual determina/identifica os estilos de liderança através da avaliação dos comportamentos do líder percepcionados pelos seus liderados. O MLQ foi aplicado a uma amostra de 97 escolas na Região Autónoma da Madeira nos meses de Janeiro, Fevereiro e Março de 2008.

Estimativa de ganho genético a partir de diferenciais de seleção e parâmetros populacionais em um rebanho Caracu

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

América Latina y el Caribe: dirección del comercio exterior de los principales productos alimenticios y agrícolas según países de destino y procedencia, 1970-1993

Incluye Bibliografía

Evaluación del desempeño y aportes para un rediseño del MERCOSUR: una perspectiva desde los sectores productivos argentinos

Incluye Bibliografía

Dental erosive wear assessment among adolescents and adults utilizing the basic erosive wear examination (BEWE) scoring system.

OBJECTIVES To investigate erosive tooth wear and related variables among adolescents and adults in Israel, utilizing the new basic erosive wear examination (BEWE) scoring system, in an attempt to contribute to the ongoing review, evaluation, and further development of an international standardized index. MATERIAL AND METHODS A cross-sectional, descriptive, and analytic survey was conducted among 500 subjects of five age groups. Dental erosion was measured according to the new BEWE scoring system. Independent variables included gender, age, origin, education, employment status, and diet. A backward stepwise linear regression model was applied to identify significantly associated variables. RESULTS Fifty percent of the survey subjects demonstrated erosive tooth wear; among them, 10 % had distinct erosion of over 50 % of the dental surface. Total BEWE score differences by age groups were statistically significant; as the age increased, the mean total BEWE scores increased (p < 0.001). The association between acidic foods and erosion was evident among the younger population (p = 0.038). In a multiple regression model, age (p < 0.001) and diet (p = 0.044) achieved statistical significance as variables associated with dental erosive wear. CONCLUSIONS Our study is one of the first to use the BEWE scoring system in an epidemiological survey among adolescents and adults. It was found that the BEWE index is straightforward, easy to conduct, and comfortably accepted by the examinees. CLINICAL RELEVANCE The present findings, together with further international research, should contribute toward continued evaluation of the BEWE system as an international standard and thereby, toward more optimal understanding, evidence-based treatment, and prevention of dental erosive wear.

The contribution of change in ethnic composition to prevalence of obesity and overweight

Objective. The prevalence of overweight and obesity differs substantially among children of different ethnic origin in the United States. The objective of this project is to estimate to what extent changes in ethnic composition since 1980 have contributed to the current general “obesity epidemic” in the childhood population of the United States.^ Methods. Populations by single year of age, 0 to 19, male and female, for Hispanics, non-Hispanic whites, and non-Hispanic blacks, from the US Census’ July estimates for 1985, 1990, 1995, 2000 and 2005 were taken and compared to the population and percentage of those groups from 1980. Age, sex, and ethnicity specific prevalence rates for overweight in 1980 were then applied to the populations by age for the specified year and differences in expected and actual overweight populations were assessed.^ Result. The results from this investigation provide estimates of the contribution that different ethnic groups have made to the overall prevalence of overweight and obesity in the childhood population of the United States. Assuming that the 1976-1980 prevalence rates had remained unchanged, and then comparing the population had there been no change in ethnic composition with the population given the actual change in ethnicity, the percentage increase was 1.06% in 1985, 1.72% in 1990, 2.57% in 1995, 3.95% in 2000, and 4.39% in 2005.^ Conclusion. The changes in ethnic composition of the population, independent of changes in ethnicity-specific prevalence, have contributed substantially to the current overall prevalence of obesity in the United States childhood population. There are a number of factors that may be responsible for the apparent susceptibility of Mexican-Americans and non-Hispanic blacks to overweight and obesity. Further research is needed on specific characteristics of those populations.^

Geochemistry and mineralogy of ultramafic rocks from conical seamount

The Mariana arc-trench system, the easternmost of a series of backarc basins and intervening remnant arcs that form the eastern edge of the Philippine Sea Plate, is a well-known example of an intraoceanic convergence zone. Its evolution has been studied by numerous investigators over nearly two decades (e.g., Kang, 1971; Uyeda and Kanamori, 1979; LaTraille and Hussong, 1980; Fryer and Hussong, 1981; Mrosowski et al., 1982; Hussong and Uyeda, 1981; Bloomer and Hawkins, 1983; Karig and Ranken, 1983; McCabe and Uyeda, 1983; Hsui and Youngquist, 1985; Fryer and Fryer, 1987; Johnson and Fryer, 1988; Johnson and Fryer, 1989; Johnson et al., 1991). The Mariana forearc has undergone extensive vertical uplift and subsidence in response to seamount collision, to tensional and rotational fracturing associated with adjustments to plate subduction, and to changes in the configuration of the arc (Hussong and Uyeda, 1981; Fryer et al., 1985). Serpentine seamounts, up to 2500 m high and 30 km in diameter, occur in a broad zone along the outer-arc high (Fryer et al., 1985; Fryer and Fryer, 1987). These seamounts may be horsts of serpentinized ultramafic rocks or may have been formed by the extrusion of serpentine muds. Conical Seamount, one of these serpentine seamounts, is located within this broad zone of forearc seamounts, about 80 km from the trench axis, at about 19°30'N. The seamount is approximately 20 km in diameter and rises 1500 m above the surrounding seafloor. Alvin submersible, R/V Sonne bottom photography, seismic reflection, and SeaMARC II studies indicate that the surface of this seamount is composed of unconsolidated serpentine muds that contain clasts of serpentinized ultramafic and metamorphosed mafic rocks, and authigenic carbonate and silicate minerals (Saboda et al., 1987; Haggerty, 1987; Fryer et al., 1990; Saboda, 1991). During Leg 125, three sites were drilled (two flank sites and one summit site) on Conical Seamount to investigate the origin and evolution of the seamount. Site 778 (19°29.93'N, 146°39.94'E) is located in the midflank region of the southern quadrant of Conical Seamount at a depth of 3913.7 meters below sea level (mbsl) (Fig. 2). This site is located in the center of a major region of serpentine flows (Fryer et al., 1985, 1990). Site 779 (19°30.75'N, 146°41.75'E), about 3.5 km northeast of Site 778, is located approximately in the midflank region of the southeast quadrant of Conical Seamount, at a depth of 3947.2 mbsl. This area is mantled by a pelagic sediment cover, overlying exposures of unconsolidated serpentine muds that contain serpentinized clasts of mafic and ultramafic rocks (Fryer et al., 1985, 1990). Site 780 (19°32.5'N, 146°39.2'E) is located on the western side of Conical Seamount near the summit, at a depth of 3083.4 mbsl. This area is only partly sediment covered and lies near active venting fields where chimney structures are forming (Fryer et al., 1990).

Interindustrial Structure in the Asia-Pacific Region: Growth and Integration, by Using 2000 AIO Table

Over the past 20 years Asian countries have achieved a certain degree of economic growth and at the same time deepened spatial interdependence. In January 2006, IDE completed the 2000 Asian International Input-Output Table, which covers eight major East Asian countries/regions as well as Japan and the United States. Given the dynamic changes in the economies of East Asia, this paper attempts to summarize the characteristics and their patterns of change in industrial structures and trade structures of the countries/regions in the Asia-Pacific region from the three viewpoints of time, space, and industry, by using the AIO table for 1985, 1990, 1995, and 2000.

Full-time faculty and civil service salaries at Illinois colleges and universities /

Compares average salaries for fiscal years 1985, 1990, and 1996-1998 for Illinois public and independent colleges and universities and the Illinois Mathematics and Science Academy with select economic indicators and with salaries at comparable institutions.

Area wage survey.

Title from caption.

Criminal offending in schizophrenia over a 25-year period marked by deinstitutionalization and increasing prevalence of comorbid substance use disorders

Objective: This study examined the pattern of criminal convictions in persons with schizophrenia over a 25-year period marked by both radical deinstitutionalization and increasing rates of substance abuse problems among persons with schizophrenia in the community. Method: The criminal records of 2,861 patients (1,689 of whom were male) who had a first admission for schizophrenia in the Australian state of Victoria in 1975, 1980, 1985, 1990, and 1995 were compared for the period from 1975 to 2000 with those of an equal number of community comparison subjects matched for age, gender, and neighborhood of residence. Results: Relative to the comparison subjects, the patients with schizophrenia accumulated a greater total number of criminal convictions (8,791 versus 1,119) and were significantly more likely to have been convicted of a criminal offense (21.6% versus 7.8%) and of an offense involving violence (8.2% versus 1.8%). The proportion of patients who had a conviction increased from 14.8% of the 1975 cohort to 25.0% of the 1995 cohort, but a proportionately similar increase from 5.1% to 9.6% occurred among the comparison subjects. Rates of known substance abuse problems among the schizophrenia patients increased from 8.3% in 1975 to 26.1% in 1995. Significantly higher rates of criminal conviction were found for patients with substances abuse problems than for those without substance abuse problems (68.1% versus 11.7%). Conclusions: A significant association was demonstrated between having schizophrenia and a higher rate of criminal convictions, particularly for violent offenses. However, the rate of increase in the frequency of convictions over the 25-year study period was similar among schizophrenia patients and comparison subjects, despite a change from predominantly institutional to community care and a dramatic escalation in the frequency of substance abuse problems among persons with schizophrenia. The results do not support theories that attempt to explain the mediation of offending behaviors in schizophrenia by single factors, such as substance abuse, active symptoms, or characteristics of systems of care, but suggest that offending reflects a range of factors that are operative before, during, and after periods of active illness.

Education, earnings, and rates of return: The case of Taiwan

Educational planners and economists have long recognized the importance of education as a form of productive investment in both advanced countries and developing countries. In the case of Taiwan, along with impressive economic growth, there was an even faster rate of growth of the government's investment in education. This leads some to question whether education has any role in economic development. ^ The purpose of this study is to provide a broad overview of the role of education, in terms of private rates of return to education, in Taiwan. In the process, a variety of hypotheses about human capital theory are examined and an empirical study of Taiwan's earnings functions are tested to show that education can be an important instrument to increase private rate of return, even under conditions of scarcity of natural and physical resources. Data was collected using the Manpower Survey and Manpower Utilization Survey, conducted by the government. Research questions were analyzed using descriptive statistics, frequencies, and regression analysis. ^ Results indicated that the Manpower Development Plans have been the decisive influence in allowing Taiwan to develop its human resources and achieve success in meeting the needs of Taiwan's economy. The structure of age-earnings profiles showed a strong relationship between earnings and education, and the profiles that successively shift upward are associated with higher levels of education. In the cross-sectional results of the rate of return in 1997, each additional year of schooling leads to a 6.2% increase in income. As to the private rates of return to different levels of education, the results found that the private rates of return are 2.88%, 4.85% and 10.05% for primary, secondary and higher education respectively. In an intertemporal comparison for 1980, 1985, 1990 and 1997, the results showed no significant trend except the private rates of return for primary education have been falling from 3.9% to 2.88%. ^ On the basis of this study, for individual student or family in Taiwan, there is likely to be a strong demand for education, particularly at the higher level. Therefore, a well-developed higher educational level becomes essential and the content of curriculum in higher education becomes another crucial question facing planners in Taiwan if they are going to use education as a means to foster economic development. ^

Educação bilíngue para surdos : um estudo acerca de práticas de letramento crítico com alunos surdos usuários da Língua Brasileira de Sinais

At a time when the issue of the inclusion of hearing-impaired students in regular schools has been discussed, it becomes necessary to reflect upon the relevance of a recurrent educational process in schools specialized in education for the hearing-impaired: the bilingual schools. Such institutions, still scarce in Brazil, offer an oriented and specialized education to hearing-impaired children and adolescents, since they have the Brazilian Sign Language as a language of instruction in all subjects, and the Portuguese written language as an additional language, which gives them the bilingual status. This research aims to investigate how the practices developed in my Portuguese classes in a bilingual school have contributed to the development of student‟s literacy, specifically the Critical Literacy (STREET, 1985, 1990, 1998), in two classes of hearing-impaired students enrolled in the final grades of elementary school. It is a qualitative, ethnographic research, which uses the triangulation system for analyzing data: (i) the pedagogical sequences; (ii) the students‟ activities and (iii) the teacher‟s and students‟ written accounts registered as field notes. Through the intersection of the data, this work evaluates whether students have achieved some level of Critical Literacy, and what kind of collaboration and/or activity is relevant during this process. This research is justified by the need to evaluate practices at bilingual schools that, although supported by current law in Brazil, are still a minority whose work is still not acknowledged or valued. The results show that activities using real texts of different genres can contribute to the development of Critical Literacy, and also to dynamic classes, with discussions about relevant topics to society in Sign Language. Also, activities that encourage students to do research and that provide to the hearing-impaired student, the understanding of the real usefulness of Portuguese as an instrument for the social inclusion of the hearing-impaired providing opportunities for them to change their social position can collaborate to this process.

La alquería de Pereila, un poblamiento andalusí en la Algarbía malagueña

El poblamiento rural de origen andalusí en la antigua Algarbía malagueña es un gran desconocido para la historiografía medieval. Las excavaciones y prospecciones con metodología arqueológica son prácticamente inexistentes y el recurso a la documentación escrita, en concreto la de origen castellana, ha dado un resultado muy limitado. Como excepción tenemos la información correspondiente al antiguo espacio residencial de Pereila y su territorio. La alquería estaba situada dentro del actual término municipal de Coín (Málaga) y un pleito en el 1537 entre el cabildo Catedralicio de Málaga y los beneficiados de Coín por el cobro del diezmo de dicho lugar, nos ha aportado una información valiosa sobre los límites territoriales del poblamiento, y en menor medida, de sus espacios de trabajo. También utilizaremos la metodología propia de la arqueología extensiva y los principios de la arqueología hidráulica que nos servirán para complementar la información aportada por la documentación escrita.

Dinâmica espaço-temporal da temperatura de superfície, da bacia do rio Corumbataí, SP utilizando imagens do sensor TM/Landsat.

Neste estudo foram empregados sistemas de informações geográficas e técnicas de sensoriamento remoto para investigar o efeito do uso e cobertura do solo sobre a temperatura da superfície do solo (TSS) nos anos de 1985, 1990, 1995, 1999, 2002 e 2011, na bacia do Rio Corumbataí (BRC), SP. O padrão espacial da TSS foi derivado de imagens do satélite Landsat, por meio da banda termal do sensor TM. Estudou-se a relação entre os índices NDVI, NDBI, MI e da altitude com a TSS. A TSS da BRC foi crescente até o ano de 1999 e reduziu até o ano de 2011. O padrão espacial da TSS foi influenciado pelo uso e cobertura do solo. Houve correlação negativa da TSS com o NDVI e MI e positiva com o NDBI. Áreas de pastagem e áreas de cana-de-açúcar colhidas podem atingir TSS superiores às áreas urbanas, dependendo das condições de umidade do ambiente. Conclui-se que os dados do TM/Landsat associados aos dados coletados em campo, apresentam potencial para identificação de padrões térmico-hídricos em estudos de bacias hidrográficas.