An instance of the MIKADO migration model

In this document, we briefly describe the main contribution to the deliverable on experimenting with the implementation of most of the calculi considered in the project. First, we describe how two well known calculi for mobile processes KLAIM and Dπ have been implemented on the top of IMC. We then describe the implementation of the MiKO programming language, an instance of the parametric calculus introduced in the WP1 with the TyCO calculus as the content of the membrane itself. After this, we outline the description of the implementation of the abstract machine for an instance of the Kell Calculus that dedicates particular attention to the proof of its correctness. Our presentation ends with a discussion of the problem of implementing security membranes on the top of an execution platform

Synthesis of atomically thin hexagonal boron nitride films on nickel foils by molecular beam epitaxy

Hexagonal boron nitride (h-BN) is a layered two-dimensional material with properties that make it promising as a dielectric in various applications. We report the growth of h-BN films on Ni foils from elemental B and N using molecular beam epitaxy. The presence of crystalline h-BN over the entire substrate is confirmed by Raman spectroscopy. Atomic force microscopy is used to examine the morphology and continuity of the synthesized films. A scanning electron microscopy study of films obtained using shorter depositions offers insight into the nucleation and growth behavior of h-BN on the Ni substrate. The morphology of h-BN was found to evolve from dendritic, star-shaped islands to larger, smooth triangular ones with increasing growth temperature

Intangibles as source of effective returns in the Iberian stock exchange markets

Literature has assigned to intangible assets the ability to generate future inflows, depending from the rights or privileges that the ownership impacts on the business. In the knowledge based economy, value of business has strengthened the identification of the gap between companies’ accounting and market values. Many companies attempt to manage the value of their intangibles, reporting them to stakeholders. Thus, if intangibles are associated to expected returns, a positive impact on turnover, and on other key performance indicators, is expected. This paper aims the identification of that impact and, furthermore, to evidence the typology of intangibles recognized and disclosed on the annual accounts. Data relates to 127 listed companies in the Iberian Stock Exchange Markets. Multiple regression was run towards the identification of the relationship between turnover and independent variables (e.g. intangibles capitalized in the statement of financial position; intangibles information compliance and disclosure index; human capital). Based on the theoretical model and predicted assumptions, empirical evidence has provided a statistically significant and reasonable basis towards the identification of variables embedded on intrinsic immateriality which can predict the businesses’ turnover.info:eu-repo/semantics/publishedVersio

Culture and profitability: empirical evidence at a European level

Organizational cultures distinguish different organizations within the same country or countries. When comparing the organizations within the same country differences in national cultures are not relevant but become relevant in comparison between different countries. This paper intends to evidence whether the profitability of companies can be influenced by the national culture. In order to characterize the culture of each country, we used the Hofstede measure of cultural dimensions (1. Power Distance (PDI); 2. Uncertainty Avoidance (UAI); 3. Individualism (IDV); 4. Masculinity (MAS); 5. Long-Term Orientation (LTO); and 6. Indulgence vs Restraint (IND)). Sample was based on the 500 largest European companies rated by the Financial Times 2015. Profitability was measured by the ratios Return on Assets (ROA) and Return on Equity (ROE). Statistical tests were performed to test whether the means of the variables used to measure profitability are statistically equal. The results indicate that companies with higher profitability are from countries with lower Power Distance, lower Uncertainty Avoidance, Long-Term Orientation, and Higher Indulgence.info:eu-repo/semantics/publishedVersio

Intellectual capital and profitability: a firm value approach in the European companies

Intangibles are, at a knowledge-based economy, the most important resources, driving companies towards systematic and sometimes unexpected returns. This paper follows a positivist approach and aims to investigate the association between the degree of intangibility, value of firms and their profitability. Based on the 500 largest European companies, rated by Financial Times, the most relevant insights emerge from the association between firms’ knowledge intensity level and its degree of profitability. These insights consolidate the evidences that immaterial resources act as drivers of future benefits and are embodied on firms’ profitability ratios.info:eu-repo/semantics/publishedVersio

Vanishing Viscosity Limits and Boundary Layers for Circularly Symmetric 2D Flows

We continue the work of Lopes Filho, Mazzucato and Nussenzveig Lopes [LMN], on the vanishing viscosity limit of circularly symmetric viscous flow in a disk with rotating boundary, shown there to converge to the inviscid limit in $L^2$-norm as long as the prescribed angular velocity $\alpha(t)$ of the boundary has bounded total variation. Here we establish convergence in stronger $L^2$ and $L^p$-Sobolev spaces, allow for more singular angular velocities $\alpha$, and address the issue of analyzing the behavior of the boundary layer. This includes an analysis of concentration of vorticity in the vanishing viscosity limit. We also consider such flows on an annulus, whose two boundary components rotate independently. [LMN] Lopes Filho, M. C., Mazzucato, A. L. and Nussenzveig Lopes, H. J., Vanishing viscosity limit for incompressible flow inside a rotating circle, preprint 2006

Phenomenological study of the electronic transport coefficients of graphene

Using a semi-classical approach and input from experiments on the conductivity of graphene, we determine the electronic density dependence of the electronic transport coefficients -- conductivity, thermal conductivity and thermopower -- of doped graphene. Also the electronic density dependence of the optical conductivity is obtained. Finally we show that the classical Hall effect (low field) in graphene has the same form as for the independent electron case, characterized by a parabolic dispersion, as long as the relaxation time is proportional to the momentum.Comment: 4 pages, 1 figur

Própolis: uma alternativa para diversificar a produção apícola.

O mel é o principal produto da apicultura, principalmente nos estados do Nordeste. Entretanto, nos últimos anos, a produção de própolis tem adquirido maior importância no agronegócio apícola, verificando-se aumento de demanda no mercado interno e significativa representação nas exportações do setor...bitstream/item/123253/1/Saude-Animal.pd

Explaining growth in African countries – what matters?

In this work we analyze the role of the traditional determinants of economic growth, pointed by the literature, in African countries in the period between 1950 and 2012, using growth regressions. Due to the specificity and the single nature of each one of these countries, methods that take into account observed and unobserved heterogeneity are used. Results highlight the relevance of the growth rate of the capital stock to economic growth in African countries in the short-run, which is significant in all regressions. The growth rate of the government to GDP ratio is also important in all but one of the regressions in which appears, and its growth is harmful for the growth of GDP per capita in the short-run. On the other hand, variables related to the public debt do not present any relationship with economic growth. Human capital has a positive relationship with economic growth in regressions that do not include public debt. The growth rate of real GDP per capita also depends (negatively) on its past value, i.e., the lower the real GDP per capita the higher will be its growth rate.info:eu-repo/semantics/acceptedVersio