Sectoral capabilities and productive structure: An input-output analysis of the key sectors of the Brazilian economy

ABSTRACT: The complex relationship between production structure and economic growth has been the subject of considerable debate among Brazilian economists. This debate became especially relevant after the 2000s, when Brazil experienced a period of growth from the rise of commodity exports, which contrasted with the stagnation observed in the previous two decades. To analyse the capacity of commodity exports to generate long-term economic growth, this paper assesses this sector's performance and its effects on related sectors in the upstream supply chain through input-output tables. These analyses lead to two main conclusions. First, expansion of agricultural and mineral commodities production exhibited little capacity to boost the economy because they have the lowest linkage indices. Second, the analysis of the Brazilian production structure demonstrated that sectors related to manufacturing can stimulate other sectors, such as sophisticated services, because of their high linkage effects on other sectors. This study also demonstrates that a development strategy should take benefit of comparative advantages in order to reach a structural change oriented toward expanding manufacturing

Clinical outcomes after implantation of a new intrastromal corneal ring with 140-degree of arc in patients with corneal ectasia

AIM: To evaluate the clinical and tomographic outcomes after implantation of a new intrastromal corneal ring segment (ICRS) with 140-degrees of arc in eyes with corneal ectasia. METHODS: We evaluated patients with corneal ectasia implanted with Ferrara 140° ICRS from April 2010 to February 2015. Outcome measures included preoperative and postoperative corrected distance visual acuity (CDVA), keratometry simulated (K) reading, tomographic astigmatism and asphericity. All patients were evaluated using the Pentacam Scheimpflug system. RESULTS: The study evaluated 58 eyes. The mean follow-up was 16.81±10.8mo. The CDVA (logMAR) improved from 0.5±0.20 (20/60) to 0.3±0.21 (20/40) (P<0.01). The average K reduced from 49.87±7.01 to 47.34±4.90 D (P<0.01). The asphericity changed from -0.60±0.86 to -0.23±0.67 D (P<0.01). The mean preoperative tomographic astigmatism decreased from -8.0±3.45 to -4.53±2.52 D (P<0.01). CONCLUSION: The new ICRS model with 140-degrees of arc effectively improve the visual acuity and reduce the high astigmatism usually found in patients with corneal ectasia