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The purpose of this paper is to contribute to the existing literature on the relationship between debt and firms’ performance, by focusing on the influence of the institutional framework on this relationship and on the role of macroeconomic variables in explaining performance.

The present work is based on a large sample of 48,840 manufacturing firms from nine European countries covering the 2008–2013 period and uses a fixed effects model.

Results show that the impact of debt on a firm’s performance depends on the measure of debt (short-term debt positively affects a firm’s performance, whereas long-term debt presents a negative relationship) and that the institutional framework is indeed affecting the relationship between debt and a firm’s performance: the positive effect of debt on a firm’s performance tends to be higher the greater the “efficiency of the legal system” and the greater the “credit market regulation.” Macroeconomic variables also play a key role in explaining performance.

Unlike most of the existing studies, which focus only on the relationship between debt and firms’ performance in a single country, the present work uses a sample of firms from nine countries with the purpose of filling a research gap and bringing new empirical evidence to this research area.

Arthroscopic osteochondroplasty is a minimally invasive procedure that has been used to treat femoroacetabular impingement syndrome, leading to significant improvements in patients’ clinical outcomes and quality of life. However, some studies suggest that inadequate bone resection can substantially alter hip biomechanics. These modifications may generate different contact profiles and higher contact forces, increasing the risk of developing premature joint degeneration. To improve control over bone resection and biomechanical outcomes during arthroscopic osteochondroplasty surgery, this study aims to present a novel system for measuring femoroacetabular contact forces.

Following a structured design process for the development of medical devices, the steps required for its production using additive manufacturing with material extrusion and easily accessible sensors are described. The system comprises two main devices, one for measuring femoroacetabular contact forces and the other for quantifying the force applied by the assistant surgeon during lower limb manipulation. The hip device was designed for use within an arthroscopic environment, eliminating the need for additional portals.

To evaluate its performance, the system was first tested in a laboratory setup and later under in-service conditions. The 3D printing parameters were tuned to ensure the watertighness of the device and sustain the intraoperative fluid pressures. The final prototype allowed for the controlled measurement of the hip contact forces in real-time.

Using additive manufacturing and readily available sensors, the present work presents the first device to quantify joint contact forces during arthroscopic surgeries, serving as an additional tool to support the surgeon’s decision-making process regarding bone resection.

A growing number of schools are now implementing quality management systems (QMS). As a result, studies are being conducted to assess the educational benefits of these systems and their capacity to identify areas for improvement in school processes and performance. The purpose the present study is to assess the impact of ISO:9001 implementation on teaching-learning processes in the classroom, and in schools with at least three years’ experience of applying this standard.

To this end, a questionnaire was administered to a final sample of 2,185 subjects from 80 pre-school, primary and secondary education schools in the regions of Madrid, Castile and León, Andalusia and Valencia (Spain).

The results show that ISO:9001 implementation yielded a higher than average impact on teaching-learning processes. Specifically, improvements were observed in the subdomains of tutorials, evaluation and classroom teaching methodologies as a result of implementing this QMS.

This impact was higher in state-subsidized private schools in Valencia and Andalusia with over nine years’ experience of ISO:9001 in schools with internal funding plans and in those with fewer than 29 teachers on the staff.

Recently, the application of quality management systems (QMS) in educational institutions has become widespread, in an effort to improve diverse processes and results in schools. However, there are very few studies that enable us to confirm whether these QMS bring true changes that are sustainable over time and lead to improvements in these institutions.

This study thus aims to assess the impact of the implementation of ISO:9001 standards on school climate and on the satisfaction of the members of the educational community at 80 Spanish preschools, primary and secondary schools in different autonomous communities.

The analyses performed show conclusive results regarding the impact of ISO:9001 standards on teachers' involvement in improving the school's climate, conflict resolution by the management team and in families' involvement and satisfaction with the school. However, no apparent evidence was found of the impact on relations among teachers, conflict resolution among staff members and the perception of satisfaction by the teachers themselves.

We must bear in mind that the results and conclusions obtained are based on the instrument developed for this study, where it has been the members of the schools themselves who have assessed the changes they have perceived or that have taken place. However, due to the limitation of the instrument, it could be complemented in future research with external evaluations that could complement the results obtained in the present study.

Furthermore, greater impact of the ISO standards was identified in schools from certain regions (Valencia and Andalusia), in state-assisted private schools, in smaller schools and in institutions which have been implementing the QMS for longer periods of time. The management team also perceived a greater improvement in climate than did teachers.

This chapter explores the origins, development, and organization of the main Portuguese capitalist groups throughout the fascist dictatorship, the Carnation Revolution, and the neoliberal European integration until the onset of the financial crisis of 2008. The Portuguese experience confirms that, far from the usual neoliberal view that presents the process of accumulation and concentration of capital as the result of fair market mechanisms, large capitalist groups emerge as a combination of three factors: privileged access to finance, State protection, and family inheritance. Furthermore, it is argued that, if capital is considered as embodiment of power relations and not as factor of production, the link between concentration/accumulation of capital and economic growth is appropriately lost. Concentration strategies can have a detrimental effect on the economy. In Portugal, the dominance of these large economic groups contributed to the development of a rentist economic structure that was contrary to the goals of productive and economic development.

Hybrid methods, wherefore numerical and experimental data are used to calculate a critical parameter, have been used for several years with great success in Experimental Mechanics and, in particular, in fracture mechanics. The purpose of this paper is to report on the comparison of the strain field from numerical modelling forecasts against the experimental data obtained with the digital image correlation method under Mode II loading in fatigue testing. The numerical dual boundary element method has been established in the past as a very reliable method near singular regions where stresses tend to grow abruptly. The results obtained from the strain data near the crack tip were used in Williams expansion and agree fairly well with both the numerical results and the analytical solution proposed for pure Mode II testing.

The work presented in this note is experimental. The proposed methodology is of an hybrid experimental/numerical nature in that a numerical stress intensity factor calculation hinges upon a stress field obtained with an image method.

The obtained results are an important step towards the development of a practical tool for crack behaviour prediction in fatigue dominated events.

The results also stress the necessity of improving the experimental techniques to a point where the methods can be applied in real-life solicitations outside of laboratory premises.

Although several research teams around the globe are presently working in this field, the present research topic is original and the proposed methodology has been presented initially by the research team years ago.