Portuguese Secondary Schools: Places of Education and Networks of Complicity.Alentejo Elites’ Progress through School and Professional Career,Development 1841–1960

The aim of this paper is the relation between the local elites and the secondary level scool in Alentejo during the 19 th and 20 th centuries. These historiographical tendencies show very cleary the necessity of analysing the problem of the elites formal education under the view of the education’s social dimension, trying to evaluate the impacte of schooling’s trajectories in the social and economical dynamics. So, it will be in this perspective that i’ll support the empirical results, wich will be introduced. I will argue the secondary scools is a privilileged space of elites training and in which I establish the relative adptation of the teaching offered to the different kinds of professional and social perfomances that were demanded to the studentes who finished the secondary education

Rigorous Enclosures of Solutions of Neumann Boundary Value Problems

This paper is dedicated to the problem of isolating and validating zeros of non-linear two point boundary value problems. We present a method for such purpose based on the Newton-Kantorovich Theorem to rigorously enclose isolated zeros of two point boundary value problem with Neumann boundary conditions.Comment: 21 pages and 2 figure

Monetary Policy Effects: Evidence from the Portuguese Flow of Funds

This paper uses a VAR approach to study the transmission of monetary policy shocks in Portugal, focusing in particular on the financial decisions of households, corporations (financial/non-financial), the government and the rest of the world. We confirm that, in many ways, households and firms react in a similar way as found in other countries, with evidence that the monetary policy shock has a contractionary effect on economic activity and increases the financing needs of households and non-financial corporations. We also find evidence that the financial sector plays an important role, supplying the necessary funds to these sectors. We do not find much evidence of a significant systematic behaviour of the government or the rest of the world.

Distributed Linear Precoding and User Selection in Coordinated Multicell Systems

In this manuscript we tackle the problem of semi-distributed user selection with distributed linear precoding for sum rate maximization in multiuser multicell systems. A set of adjacent base stations (BS) form a cluster in order to perform coordinated transmission to cell-edge users, and coordination is carried out through a central processing unit (CU). However, the message exchange between BSs and the CU is limited to scheduling control signaling and no user data or channel state information (CSI) exchange is allowed. In the considered multicell coordinated approach, each BS has its own set of cell-edge users and transmits only to one intended user while interference to non-intended users at other BSs is suppressed by signal steering (precoding). We use two distributed linear precoding schemes, Distributed Zero Forcing (DZF) and Distributed Virtual Signal-to-Interference-plus-Noise Ratio (DVSINR). Considering multiple users per cell and the backhaul limitations, the BSs rely on local CSI to solve the user selection problem. First we investigate how the signal-to-noise-ratio (SNR) regime and the number of antennas at the BSs affect the effective channel gain (the magnitude of the channels after precoding) and its relationship with multiuser diversity. Considering that user selection must be based on the type of implemented precoding, we develop metrics of compatibility (estimations of the effective channel gains) that can be computed from local CSI at each BS and reported to the CU for scheduling decisions. Based on such metrics, we design user selection algorithms that can find a set of users that potentially maximizes the sum rate. Numerical results show the effectiveness of the proposed metrics and algorithms for different configurations of users and antennas at the base stations.Comment: 12 pages, 6 figure