Rocket tracking and decoupling eigenstructure control law

A control law was designed for a satellite launcher ( rocket ) vehicle using eigenstructure assignment in order that the vehicle tracks a reference attitude and also to decouple the yaw response from roll and pitch manoeuvres and to decouple the pitch response from roll and yaw manoeuvres. The design was based on a complete linear coupled model obtained from the complete vehicle non linear model by linearization at each trajectory point. After all, the design was assessed with the vehicle time varying non-linear model showing a good performance and robustness. The used design method is explained and a case study for the Brazilian satellite launcher ( VLS Rocket ) is reported.

A nova lei de falências brasileira: primeiros impactos

The goal of this paper is to analyze the premiere effects of the New Brazilian Bankruptcy Law, measuring its impact over the amount of bankruptcies and judicial reorganizations, and the firms' access to credit. Making use of econometric models we find that the amount of bankruptcies (requested and decreed) suffered a strong and immediate impact, reducing it in a significant way as well as the requirement of judicial reorganizations. Finally, using sectorial aggregated credit data, we find an expansion of the credit market, mainly to commercial, rural and services sectors. Additionally we did not evidence changes at the average interest rate charged to firms.

Corruption, income, and rule of law: empirical evidence from developing and developed economies

This article presents an empirical analysis based on cross-country data concerned with two points regarding corruption: (i) its effects on income; and (ii) how to mitigate corruption. The findings can be highlighted in two points. Firstly the idea that corruption is intrinsically connected with income is confirmed. Secondly, the traditional argument that an increase in rule of law represents a good strategy in the fight against corruption is valid for developing countries. Furthermore, this study reveals that the search for increasing the human development index represents a rule of thumb for high levels of income and to control corruption.