Manuel Álvarez-Rodríguez

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In this paper we present an analytical approach to pilot-based synchronization algorithms for data hiding in still images. A representative algorithm belonging to the family of those exploiting a regular structure in the spreading sequence is chosen for study. We improve it by proposing the use of the Levenberg–Marquardt's method for nonlinear least-squares(More)
Endogenous and exogenous opioids modulate reproductive functions in target cells via opioid receptors (μ, δ, and κ). Sperm motility is a metric of gamete functionality, and serves as a suitable parameter for in vitro drug-induced toxicity assays. This study identifies the presence and location of opioid receptors in pig spermatozoa as well as their(More)
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