Uma tarefa de investigação em organização e tratamento de dados no 1.º ciclo: realização da tarefa e reflexão da professora

Esta comunicação procura compreender a forma como uma professora do 1.º ciclo conduz os alunos na realização de uma tarefa de organização e tratamento de dados e a reflexão que realiza. Trata-se de um trabalho no âmbito de um estudo que segue uma metodologia de investigação interpretativa e qualitativa na modalidade de estudo de caso. Os resultados mostram que, na exploração da tarefa, a prática de ensino da professora contempla de modo diferenciado as diversas fases do ciclo investigativo estatístico. A professora revela particular atenção à participação dos alunos nas tomadas de decisão sobre os procedimentos a seguir. Na sua reflexão, identifica os principais momentos da aula, valoriza as decisões tomadas e destaca a fase de recolha de dados como o momento mais significativo. In this paper, we analyze how a primary school teacher leads students in doing a task involving data handling, as well as the reflection. The paper is carried in the framework of a larger study that follows an interpretative and qualitative research methodology with a case study design. The results indicate that, in the exploration of the task, the practice of this teacher includes in different ways the phases of a statistical investigation. The teacher showed particular concern with the participation of the students in making decisions about the procedures to follow. During her reflection, she identifies the main moments of the lesson, values the decisions made and highlights the phase of data collection as the most meaningful moment.

A value chain analysis of tuna industry in Ghana

Every can of tuna purchased by the consumer has taken a long journey before reaching the supermarket shelves. For each can bought there is a lengthy process from sea to shelf. A large proportion of the tuna cans purchased in the European Union come all the way from West Africa; a developing region with a high dependency on fisheries. Amidst an ever-increasing demand for tuna products the global tuna fisheries are set to continue expanding, apparently one of the last natural resource based industries fit to do so in West Africa. Tuna is the biggest fisheries export and dominates the fisheries sector in Ghana, a country situated in West Africa. This thesis aims to understand how this globally important industrial fisheries functions in terms of procedures, practices, Governance and finance. Socioeconomic influences, in the setting of a developing country, were also examined. For these purposes a Value Chain Analysis was employed. A Value Chain Analysis is a tool commonly used to understand how different companies and organizations participate in a domestic policy environment, which directs conclusion in the global economy. This analysis has the potential to allow researchers to fully understand a commodity chain and hence identify realistic opportunities for consequential improvements. Interviews and questionnaires were employed in-field Ghana along with secondary data collection techniques. It was found that the fisheries functions at the production level under influences from large multinational companies and tends to operate with a certain degree of lawlessness. Governance over the value chain is well defined, however implementation is poor or non-existent. The processors, whom are also dominated by multinationals, exert some control over the producers and their sales, however the high value links which are highlighted occur at the retail stage. Socioeconomic dynamics acting in the chain included the lack of communication between the public and private sector, power imbalances amongst players at production, the role of local businesswomen as actors in the chain and the general characteristics of the workers in the industry. Value addition and upgrading are needed the most in Governance over the chain, especially within Monitoring, Control and Surveillance. The results of the study provide a wealth of material about the components of a cost-heavy fishing industry in a developing country; an industry on which many eyes have recently turned due to illegal fishing activities. It highlights clearly where funding and future focus are needed. This value chain can be used as a guide for those that need to comprehend the financial complexities and real life dynamics of the Ghanaian tuna fishing industry today.

A relação entre as famílias e os adultos institucionalizados: um projeto no centro de dia “O Pontão”

Dissertação de Mestrado, Educação Social, Escola Superior de Educação e Comunicação, Universidade do Algarve, 2015

An application of two techniques for the analysis of short, multivariate non-stationary time-series of Mauritanian trawl survey data

Min/max autocorrelation factor analysis (MAFA) and dynamic factor analysis (DFA) are complementary techniques for analysing short (> 15-25 y), non-stationary, multivariate data sets. We illustrate the two techniques using catch rate (cpue) time-series (1982-2001) for 17 species caught during trawl surveys off Mauritania, with the NAO index, an upwelling index, sea surface temperature, and an index of fishing effort as explanatory variables. Both techniques gave coherent results, the most important common trend being a decrease in cpue during the latter half of the time-series, and the next important being an increase during the first half. A DFA model with SST and UPW as explanatory variables and two common trends gave good fits to most of the cpue time-series. (c) 2004 International Council for the Exploration of the Sea. Published by Elsevier Ltd. All rights reserved.