A new species of the Sword-tailed Cricket genus Phyllopalpus Uhler (Trigonidiidae: Phylloscyrtini), from Tzitzio, in the Trans-Mexican Volcanic Belt, Michoacán, Mexico, is described and illustrated. Morphological and molecular data are integrated to describe Phyllopalpus nicolaita sp. nov.
View Article and Find Full Text PDFThe design of new strategies that exploit methods from machine learning to facilitate the resolution of challenging and large-scale mathematical optimization problems has recently become an avenue of prolific and promising research. In this paper, we propose a novel learning procedure to assist in the solution of a well-known computationally difficult optimization problem in power systems: The Direct Current Optimal Transmission Switching (DC-OTS) problem. The DC-OTS problem consists in finding the configuration of the power network that results in the cheapest dispatch of the power generating units.
View Article and Find Full Text PDFThis experimental study analyzes the seismic behavior of rammed earth walls with Arundo donax natural fiber inclusions, also called "caña brava" (REWC), and without inclusions (REW). The experimental program consists of two stages: physical and mechanical characterization of materials, where properties such as particle size, density, Atterberg limits, and compressive and flexural strength were determined; and dynamic tests, which included compressive and cyclic load tests on REW and REWC walls. The walls were subjected to cyclic loading with derivatives between 0.
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