Packing densities of layered permutations and the minimum number of monotone sequences in layered permutations

In this paper, we present two new results of layered permutation densities. The first one generalizes theorems from H\"{a}st\"{o} (2003) and Warren (2004) to compute the permutation packing of permutations whose layer sequence is~$(1^a,\ell_1,\ell_2,\ldots,\ell_k)$ with~$2^a-a-1\geq k$ (and similar permutations). As a second result, we prove that the minimum density of monotone sequences of length~$k+1$ in an arbitrarily large layered permutation is asymptotically~$1/k^k$. This value is compatible with a conjecture from Myers (2003) for the problem without the layered restriction (the same problem where the monotone sequences have different lengths is also studied).Comment: 24 page

Age-adjusted validation of the most stringent criteria for active surveillance in low-risk prostate cancer patients

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Sobre ensinar e aprender e sobre aprender a ensinar no campo das visualidades contemporâneas

O capítulo procura debater, na era as redes sociais, novos modos de exercício docente, sublinhando a necessidade da pesquisa sistemática (docência-pesquisa) e a implementação das chamadas aulas-acontecimento a partir da formação de professores de artes visuais

The Two Sides of the Innovation Coin

With the use of the Stakeholder Theory and the Diffusion of Innovation Theory, a Model for Analysis of the Consequences of IT Innovation Adoption was developed, addressing both positive and negative sides of innovation consequences. The Model has been validated in interviews with PhDs specializing in the field, then applied to the case of Open Data adoption by the Federal District Government of Brazil. In the empirical study, 95 consequences for various stakeholders were categorized. The study’s synthesis can be viewed in a single image that reveals the similar and conflicting understandings of the different innovation stakeholders, and can be used as an innovation management tool: the Map of Consequences of Innovations Adoption