A Spatial-Spectral Classification Method Based on Deep Learning for Controlling Pelagic Fish Landings in Chile.

Fishing has provided mankind with a protein-rich source of food and labor, allowing for the development of an important industry, which has led to the overexploitation of most targeted fish species. The sustainable management of these natural resources requires effective control of fish landings and, therefore, an accurate calculation of fishing quotas. This work proposes a deep learning-based spatial-spectral method to classify five pelagic species of interest for the Chilean fishing industry, including the targeted , and and non-targeted and fish species.

Endocrine Disruptor Impacts on Fish From Chile: The Influence of Wastewaters.

Industrial wastewaters and urban discharges contain complex mixtures of chemicals capable of impacting reproductive performance in freshwater fish, called endocrine-disrupting compounds (EDCs). In Chile, the issue was highlighted by our group beginning over 15 years ago, by analyzing the impacts of pulp and paper mill effluents (PPME) in the Biobio, Itata, and Cruces River basins. All of the rivers studied are important freshwater ecosystems located in the Mediterranean region of Central Chile, each with a unique fish biodiversity.

[Correlation between socioeconomic factors and in-hospital mortality from ischemic stroke in a hospital cohort in Colombia, 2003-2006].

Objective: To determine if there is a correlation between socioeconomic conditions and in-hospital mortality (IHM) from ischemic stroke in a sample of the Colombian population and identify the chain of events that determine that association.

Methods: Prospective study of a hospital cohort of patients with ischemic stroke in four Colombian clinical referral institutions-located in Floridablanca, Bucaramanga, Bogotá, and Medellín-between February 2003 and December 2006. Hierarchical analysis was used to group the socioeconomic variables into three levels, and their relationship to IHM due to ischemic stroke was assessed in a Cox proportional hazards model.