When development meets culture : the contribution of Celso Furtado in the 1970s

The article assesses the work of Celso Furtado (1920-2004) in the 1970s, when the author promotes an ambitious attempt to redefine the field of development economics. Furtado's works have recently been revisited by several authors, including in the field of history of economic thought. The text is devoted to explore how the author challenges development theory’s perceived failure to explain the reality of underdeveloped nations in the late 1970s by expanding the scope of analysis and giving culture a pivotal role in the dynamics of development and underdevelopment. This theoretical movement happens at the time in which development economics begins to drift out of the mainstream of economic theory. Hence, unlike the concept of underdevelopment introduced in the 1950s, the discussion of creativity and dependence encounters an adverse intellectual landscape, even though it represents one of the author’s most original contributions.Celso Furtado, development, underdevelopment, creativity, culture.

Model-based programming environments for spreadsheets

Spreadsheets can be seen as a flexible programming environment. However, they lack some of the concepts of regular programming languages, such as structured data types. This can lead the user to edit the spreadsheet in a wrong way and perhaps cause corrupt or redundant data. We devised a method for extraction of a relational model from a spreadsheet and the subsequent embedding of the model back into the spreadsheet to create a model-based spreadsheet programming environment. The extraction algorithm is specific for spreadsheets since it considers particularities such as layout and column arrangement. The extracted model is used to generate formulas and visual elements that are then embedded in the spreadsheet helping the user to edit data in a correct way. We present preliminary experimental results from applying our approach to a sample of spreadsheets from the EUSES Spreadsheet Corpus. Finally, we conduct the first systematic empirical study to assess the effectiveness and efficiency of this approach. A set of spreadsheet end users worked with two different model-based spreadsheets, and we present and analyze here the results achieved.This work is funded by ERDF European Regional Development Fund through the COMPETE Programme (operational programme for competitiveness) and by National Funds through the FCT Fundacao para a Ciencia e a Tecnologia (Portuguese Foundation for Science and Technology) within project FCOMP-01-0124-FEDER-010048. The first author is supported by the FCT grant SFRH/BPD/73358/2010

HISTÓRIA ECONÔMICA E REGIONALIZAÇÃO: CONTRIBUIÇÃO A UM DESAFIO TEÓRICO-METODOLÓGICO

This paper intends to contribute to the theoretical and methodological debate on regionalization and history. Firstly, it starts discussing the very concept of region on its several related approaches: geography, political economy, history and historiography. Then, a methodological issue is analyzed, that is to say: the paper tries to articulate the most important criteria of spatial segmentation embedded on regionalization (analytical functionalism, heterogeneity and homogeneity) with: a) the necessity of non-anachronism; and b) the necessity of a historical dynamic approach on definition of regional boundaries.

Extension and implementation of classSheet models

In this paper we explore the use of models in the context of spreadsheet engineering. We review a successful spreadsheet modeling language, whose semantics we further extend. With this extension we bring spreadsheet models closer to the business models of spreadsheets themselves. An addon for a widely used spreadsheet system, providing bidirectional model-driven spreadsheet development, was also improved to include the proposed model extension.(undefined

MDSheet: a framework for model-driven spreadsheet engineering

In this paper, we present MDSHEET, a framework for the embedding, evolution and inference of spreadsheet models. This framework offers a model-driven software development mechanism for spreadsheet users

Embedding and evolution of spreadsheet models in spreadsheet systems

This paper describes the embedding of ClassSheet models in spreadsheet systems. ClassSheet models are wellknown and describe the business logic of spreadsheet data. We embed this domain specific model representation on the (general purpose) spreadsheet system it models. By defining such an embedding, we provide end users a model-driven engineering spreadsheet developing environment. End users can interact with both the model and the spreadsheet data in the same environment. Moreover, we use advanced techniques to evolve spreadsheets and models and to have them synchronized. In this paper we present our work on extending a widely used spreadsheet system with such a model-driven spreadsheet engineering environment

A bidirectional model-driven spreadsheet environment

Software Engineering (ICSE), 2012In this extended abstract we present a bidirectional model-driven framework to develop spreadsheets. By being model driven, our approach allows to evolve a spreadsheet model and automatically have the data co-evolved. The bidirectional component achieves precisely the inverse, that is, to evolve the data and automatically obtain a new model to which the data conforms.(undefined

Embedding, evolution, and validation of model-driven spreadsheets

This paper proposes and validates a model-driven software engineering technique for spreadsheets. The technique that we envision builds on the embedding of spreadsheet models under a widely used spreadsheet system. This means that we enable the creation and evolution of spreadsheet models under a spreadsheet system. More precisely, we embed ClassSheets, a visual language with a syntax similar to the one offered by common spreadsheets, that was created with the aim of specifying spreadsheets. Our embedding allows models and their conforming instances to be developed under the same environment. In practice, this convenient environment enhances evolution steps at the model level while the corresponding instance is automatically co-evolved.Finally,wehave designed and conducted an empirical study with human users in order to assess our technique in production environments. The results of this study are promising and suggest that productivity gains are realizable under our model-driven spreadsheet development setting.The authors of this paper would like to express their gratitude to Dr. Nuno Alpoim, CEO of Agere, for providing us and our study with a spreadsheet under usage in industry. This work is funded by ERDF-European Regional Development Fund through the COMPETE Programme (operational programme for competitiveness) and by National Funds through the FCT-Fundacao para a Ciencia e a Tecnologia (Portuguese Foundation for Science and Technology) within projects FCOMP-01-0124-FEDER-020532 and FCOMP-01-0124-FEDER-010048. This work was also supported by Fundacao para a Ciencia e a Tecnologia with grants SFRH/BPD/73358/2010 and SFRH/ BPD/46987/2008