2,989 research outputs found
Conformal and invariant measure of a hyperbolic entire transcendental map from the viewpoint of symbolic dynamics
We prove that there is a hyperbolic transcendental entire map that generates
a class of potentials which is different from the ones studied by Mayer and
Urba\'nski (2010). Moreover, a metric on a non-compact subset of the full shift
with a countable alphabet is given, which is not necessarily compatible with
the natural shift metric. This subset encodes the dynamics of a subset of the
Julia set of hyperbolic transcendental maps, which is non-compact and
non-Markov, so we study the existence of a conformal and an invariant
probability measure of the shift on this subset and a class of weakly H\"older
continuous potentials
Human-Robot Collaboration as a new paradigm in circular economy for WEEE management
E-waste is a priority waste stream as identified by the European Commission due to fast technological changes and eagerness of consumers to acquire new products. The value chain of the Waste on Electric and Electronic Equipment (WEEE) has to face several challenges: the EU directives requesting collection targets for 2019–2022, the costs of disassembly processes which is highly dependent on the applied technology and type of discarded device, and the sale of the obtained components and/or raw materials, with market prices varying according to uncontrolled variables at world level. This paper presents a human-robot collaboration for a recycling process where tasks are opportunistically assigned to either a human-being or a robot depending on the condition of the discarded electronic device. This solution presents some important advantages; i.e. tedious and dangerous tasks are assigned to robots whereas more value-added tasks are allocated to humans, thus preserving jobs and increasing job satisfaction. Furthermore, first results from a prototype show greater productivity and profitable projected investment
Algebraic methods for parameterized codes and invariants of vanishing ideals over finite fields
Let K be a finite field with q elements and let X be a subset of a projective
space P^{s-1}, over the field K, which is parameterized by Laurent monomials.
Let I(X) be the vanishing ideal of X. Some of the main contributions of this
paper are in determining the structure of I(X) and some of their invariants. It
is shown that I(X) is a lattice ideal. We introduce the notion of a
parameterized code arising from X and present algebraic methods to compute and
study its dimension, length and minimum distance. For a parameterized code
arising from a connected graph we are able to compute its length and to make
our results more precise. If the graph is non-bipartite, we show an upper bound
for the minimum distance. We also study the underlying geometric structure of
X.Comment: Finite Fields Appl., to appea
In Vitro Impact of Triatomine Salivary Glands Extracts Introduced to Endothelial Cells
Chagas Disease (AKA Trypanosomiasis) is caused by biting/feeding behavior from the arthropod vector Triatoma (subfamily of Reduviidae family), that house the endoparasite Trypanosoma cruzi, which can then be passed to human and mammalian hosts (Schmidt, et al., 2011). Resources are currently being utilized to help minimize the effects and susceptibility of Chagas within endemic areas. Previous research has demonstrated that there are biochemical interactions between specific Triatoma salivary proteins and host cells (Ribeiro, Assumpção, Van Pham, Francischetti, & Reisenman, 2012).This study examined the interactions made from salivary proteins procured from the T. sanguisuga and T. indictiva species with the expression of two glycoproteins, fibronectin (angiogenic) and thrombospondin (antiangiogenic) when exposed to Human Umbilical Vein Endothelial Cells (HUVECs)
Cytokines Gene Expression on Macrophages Exposed to Triatoma Salivary Gland Extracts
Triatoma sanguisuga and Triatoma Indictiva are vectors of Chagas disease. These two vectors goes to the host and bites down to feed on blood, which is necessary for the egg laying process. The disease however is not spread through their bite, but through their feces. When they become full of blood, they defecate and that is where the parasite is. The parasite is then introduced into the skin when the host scratches at the bite and feces enter the skin. An estimated 8 million people worldwide are infected with T Cruzi, and the United States has the 7th highest prevalence of Chagas infections. The Macrophages produces cytokines including TNF (Tumoral Necrosis Factor), IL-10 and IL-18 in responses to danger or infections, the function include tissue inflammation and destruction
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