The Yang-Baxter equation plays a fundamental role in various areas of mathematics. Its solutions, called braidings, are built, among others, from Yetter-Drinfeld modules over a Hopf algebra, from self-distributive structures, and from crossed modules of groups. In the present paper these three sources of solutions are unified inside the framework of Yetter-Drinfeld modules over a braided system...

This paper proposes a compositional model-theoretic account of the way the interpretation of indicative conditionals is determined and constrained by the temporal and modal expressions in their constituents. The main claim is that the tenses in both the antecedent and the consequent of an indicative conditional are interpreted in the same way as in isolation. This is controversial for the antec...

Background: Unmanned Aerial Vehicles (UAVs) applied to agricultural plant protection is widely used, and the field of operation expanding due their high efficiency pesticide application reduction. However, work on drift lags behind development UAV spraying device. Methods: We compared spray potential at four liquid pressures 2, 3, 4, 5 bar ejected from hydraulic nozzles mounted a test platform ...

links the clauses “you need anything” and “I’m Jill” in a conditional construction, but semantically we may naturally perceive the propositions expressed by these clauses as conditionally unrelated; the name of the woman does not depend on whether the addressee needs anything or not. To humorously misapprehend such conditional sentences, as Martin does, is to pretend to see a conditional relati...

This article presents an instability model for the high-temperature irradiation-resistant thermocouple (HTIR-TC). Here term defines superposition of both drift and inhomogeneity TC thermoelements occurring simultaneously. The HTIR-TC is advanced (TC) that uses refractory metals niobium molybdenum as sensing generating electromotive force (EMF) in a field neutrons at temperatures upward 1,600°C....

Previous studies suggested that sudden stratospheric warmings (SSW) change the global atmosphere from troposphere to thermosphere/ionosphere. We report low-latitude O+ and H+ composition at 840-km altitude during 2009 SSW, with DMSP satellite morning measurements. Our results indicate variation around 30-km modulates ion exchange between ionosphere protonosphere via vertical field-aligned plasm...