Learning CAD at university through summaries of the rules of design intent

The ease with which 3D CAD models may be modified and reused are two key aspects that improve the design-intent variable and that can significantly shorten the development timelines of a product. A set of rules are gathered from various authors that take different 3D modelling strategies into account. These rules are then applied to CAD strategic-knowledge learning methodology and included in 3D CAD modelling exercises for students following the degree in mechanical engineering at the University of Burgos (Spain). The experiment was conducted in two groups with a total of 75 students. The design-intent rules were introduced in the different exercises that the teacher explained in both the theoretical and the practical classes. In addition, a summary of the different design rules in each of the practical exercises was explained in the practical classes in only one of the groups. The experimental results, reported in this paper, tested the influence of these summaries on overall improvements in 3D modelling and on the design-intent variable, which is subdivided into four sections: skeleton, structures, alterations and constraints. The use of the summaries of the design intent rules led to statistically significant improvements in 3D modelling in the experimental group, in comparison with the group of students to whom those summaries were not explained.     

Taking its toll: The private financing of roads in Spain

The article analyses the cost of using private finance to build, finance and maintain toll roads in Spain. Spain is the primary exponent of private finance for roads in Europe, where the case rested on the lack of public finance, in contrast to the UK that has stressed value for money. The evidence shows that more than half of the toll charge represents the cost of finance; the cost of private finance is nearly double the cost of public finance; and financing is underpinned by various forms of public support creating risks for the taxpayers.     

New development: New global health care PPP developments—a critique of the success story

Health care public–private partnerships (PPPs), where clinical services as well as infrastructure are delivered by the private sector, are coming under the spotlight as governments seek to achieve value for money in health budgets. Existing examples have been widely reported as successful. However, this article urges caution as a closer look at the evidence shows that handing over control of service delivery to the private sector is difficult to monitor and evaluate, carries cost implications which remain largely unquantified and can create additional risk.     

Analyzing the labor market activity of immigrant families in Germany

This paper analyzes whether immigrant families facing credit constraints adopt a family investment strategy wherein, upon arrival, an immigrant spouse invests in host country-specific human capital while the other partner works to finance the family's current consumption and the spouse's skills accumulation. Using data for West Germany, we do not find evidence for such a specialization strategy. We further examine the labor supply and wage assimilation of families whose members immigrated together relative to families whose members immigrated sequentially. Our estimates indicate that this differentiation is relevant for the analysis of the labor market activities of migrant households.     

Spanish healthcare public private partnerships: The ‘Alzira model’

Global infrastructure reports suggest that, in the wake of the fiscal crisis, healthcare PPPs are seen as a growing area as governments switch attention to social welfare projects. Spain is unique in having had a PPP hospital in operation for over a decade which is funded through a capitation fee. This paper takes a critical approach to evaluate this project, with our analysis showing that the original project could never have been viable and that the renegotiation of the contract has been costly to the government. Viewing the contract through a financialised lens we can see how this contract has been used to ‘make up’ a market for the private delivery of public healthcare in Spain. We also call into question the role of the Spanish savings banks in financing this type of project, which has now been replicated with further hospitals in Spain and Portugal, as well as in developing countries such as Lesotho.     

TWO DECADES OF DBFO ROADS IN THE UK AND SPAIN: AN EVALUATION OF THE FINANCIAL PERFORMANCE

Road schemes are of major importance in the global PPP market. We focus on Design‐Build‐Finance‐Operate (DBFO) arrangements covered by shadow toll or availability payment mechanisms, where the UK and Spain are key players. Now that a good number of DBFO schemes in the UK and Spain have been operational for well over half the contract period, there is scope for a detailed ex post evaluation of DBFO performance in both countries and an analysis of how the DBFO model has evolved. Preliminary results show that these contracts continue to be very expensive for public administrations, especially in the UK, where the financing costs and fee per kilometre are high. On the other hand, they are an easy source of revenue for the parent companies of the concessionaires, where the increased use of subordinated debt rather than equity seeks to reduce risk. However, despite circumventing the controversial hard‐tolling, some projects in both Spain and the UK present poor outcomes. Several other problems around these projects are identified, including lack of public accountability and transparency or poor governance, raising long‐term questions around affordability and opportunities for further study.