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We report the parasitism of an unidentified species of Philornis, extracted from a juvenile Dendroica castanea that was collected from Pipeline Road of the Soberania National Park of Panama. This finding is unusual since Philornis spp. parasitizes nested chicks. On…

The article aims at presenting the modus operandi of Keynes' economic policy -especially fiscal policy, which he reveals as the most important. For that purpose, the article is divided into four sections. First, it starts with a brief introduction. Secondly,…

Independently of capital movements, the so called Thirlwalls's Law (Thirlwall, 1979) is theoretically a robust result in the long run. When the rate of growth of exports is equal or greater than the rate of growth of foreign debt, there…

A new analytical method to calcúlate the characteristic impedance of transmission lines embedded in identical, symmetrical and reciprocal connectors is herein presented. To calcalate the characteristic impedance of transmission lines, the proposed method uses S-parameter measurements performed on two uniform…

In this paper we present a method of reducing speckle noise ¡n applications for ultrasound image processing using low degree unbiased FIR filters. An important feature of the p-lag gain of unbiased FIR filters is that at some cross points…

A new heuristic procedure for a commercial territory design problem is introduced in this work. The proposed procedure is based on the divide-and-conquer paradigm and basically consists of a successive dichotomy process on a given large instance of the problem.…

Fractional order systems are considered by many mathematicians the systems of the XXI century. The reason is that nature has proved to be best described in terms of systems composed of fractional order derivatives. This emerging area of research is…

The vein of Galen aneurysmal malformation (VGAM) is an extremely rare arteriovenous malformation. The VGAM clinical manifestations vary depending on the magnitude of vascular compromise and the age at initial presentation. Neonates typically present with severe congestive heart failure. Here…

As part of a major project on the genus Salvia in the state of Jalisco and adjacent areas, Mexico, 4 new taxa of Salvia L. are described and illustrated. Identification Keys for the related species and comparison tables of morphological…