A NEOCLASSICAL MODEL OF HOUSING QUALITY GROWTH AN INTERPRETATION*

The paper interprets a neoclassical model of quality growth in relation to housing technology, reinvestment choice, growth of the stock of shelter, growth with and without architectural design progress, and analyses of the golden rule of quality accumulation in the housing sector.     

A Structural Approach to the Form of the Population Density Function

The central objective of this paper is to explore a comprehensive structural modeling approach that extracts analytical density functions answering questions raised by recent empirical studies.     

Domestic Pigs in Africa

The history of African pig breeds is still controversial due to the relative scarcity of archaeological and genetic data clarifying their origins. While these breeds might descend from Near Eastern pigs entering the continent via Egypt during the Neolithic, Africa may be a primary domestication locus for pigs, as indicated for other species such as cattle and donkeys. In this regard, characterisation of the mitochondrial gene pool of African pig breeds has revealed a very low frequency of Near Eastern alleles, suggesting that, if Fertile Crescent pigs played a part in the foundation of African breeds, their genetic signature has been substantially erased. Interestingly, genetic analysis of western and eastern African pig breeds has revealed a strong phylogeographic pattern, with the latter harbouring Far Eastern alleles at high frequencies. This finding is consistent with data obtained for chickens and confirms that livestock was transported in ancient times, from the Far East to Africa as a consequence of the Indian Ocean trade. European colonisation of Africa also involved the introduction of exotic swine breeds such as Iberian pigs. The confluence of the highly divergent European and Far Eastern Sus scrofa gene pools contributed to significantly enrich the genetic reservoir of African swine breeds, favouring their adaptation to environmental conditions that are often harsh. Conservation of this genetic legacy will be of utmost importance to ensure the prosperity of current resource-based subsistence farming systems in Africa.     

Determinants of the Uneven Regional Participation of Firms in European Technology Programmes. The 'Low R&D Trap'

Technology is of key importance to the growth of regional firms and economies. Research has shown the association between low technology development or take-up and regional disparities. Hence technology policy is moving closer to the heart of regional policies. European innovation programmes are intended to involve firms, large and small, in international technology research and development networks. The paper focuses on the involvement of Spanish firms in such programmes. Participation tends to be low if business R&D, presence of large firms, and the development of regional innovation systems are also low. Creation of R&D infrastructure through the Structural Funds has now to be prioritized at EU level and also define a new scheme of sectoral priorities in order to support R&D innovation activities in fields diverse from high-tech, if regions are to escape the 'low R&D trap'.     

Venezuela's national colonization programme: the Tovar colony,a German agricultural settlement

A decision by the Council of the Indies in 1801 authorizing the colonies to accept overseas immigrants cleared the way for the colonization of Spanish America by foreign settlers. In Venezuela, the first practical attempt to promote immigration came ten years later, when the Marquis del Toro offered to donate land to incoming white immigrants. Immigration schemes were planned and executed by private agents, most of whom were closely connected with the Caraqueño landowners. However, it proved very difficult to attract Europeans because Venezuela offered potential immigrants few economic advantages, and most outsiders viewed the country as politically unstable. There was, however, one exception to encourage European immigration, the Tovar colony, founded by one of the oldest and most powerful families within the government, which awarded the Tovars, through their intermediary and project director, General Codazzi, the largest loan ever granted under the immigration programme. The Tovars were ably assisted in this task by Codazzi, whose geographical knowledge and experience were crucial to the success of the Tovar colony. The project dovetailed perfectly within the ideological interest of the government. Although the scheme benefited only the Tovar family, in public, it was presented as essential to the national economic interest.