Horacio Tapia-McClung

Horacio Tapia-McClung
Universidad Veracruzana | UV · Centro de Investigacion en Inteligencia Artificial

Doctor of Engineering

About

24
Publications
5,156
Reads
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51
Citations
Introduction
I am a physicist interested in applying technology to solve problems in different areas of science and engineering, in particular studying complex systems from the point of view of statistical physics and data analysis. For this, I apply computer methods, and develop technology (including sensors) and algorithms. I work at the Centro de Investigacion en Inteligencia Artificial, Universidad Veracruzana, Mexico.
Additional affiliations
March 2010 - December 2010
Universidad Metropolitana
Position
  • Instructor
June 2007 - December 2008
Cabrillo Community College District
Position
  • Managing Director
February 2007 - June 2007
Cabrillo Community College District
Position
  • Instructor
Education
September 2010 - November 2012
September 2002 - December 2005
University of California, Davis
Field of study
  • Applied Sciences
August 2000 - November 2010

Publications

Publications (24)
Article
A numerical investigation of the collapse of granular columns has been conducted. In particular, we address the effect of the grain shape on the properties of the collapse. We show that the final runout and height of the deposits scale as a power law of the initial aspect ratio of the column, a, independently of the elongation of the grains used. W...
Article
Full-text available
Digital processing and analysis of high resolution images of 30 individuals of the orb web spider Verrucosa arenata were performed to extract and quantify human visible colors present on the dorsal abdomen of this species. Color extraction was performed with minimal user intervention using an unsupervised algorithm to determine groups of colors on...
Article
Full-text available
Ambush predators depend on cryptic body colouration, stillness and a suitable hunting location to optimise the probability of prey capture. Detection of cryptic predators, such as crab spiders, by flower seeking wasps may also be hindered by wind induced movement of the flowers themselves. In a beach dune habitat, Microbembex nigrifrons wasps appro...
Article
Quantum biology seeks to explain biological phenomena via quantum mechanisms, such as enzyme reaction rates via tunnelling and photosynthesis energy efficiency via coherent superposition of states. However, less effort has been devoted to study the role of quantum mechanisms in biological evolution. In this paper, we used transcription factor netwo...
Article
We find that volcanic hazards vary across the historically active Los Tuxtlas volcanic field (LTVF), with large scoria cones, and likely larger magnitude and intensity eruptions, concentrated in a NW–SE trending band and maars distributed at lower elevations. As eruptive processes vary in systematic ways across the LTVF that reflect the structure a...
Preprint
Full-text available
Ambush predators depend on cryptic body colouration, stillness and a suitable hunting location to optimise the probability of prey capture. Detection of cryptic predators, such as crab spiders, by flower seeking wasps may also be hindered by wind induced movement of the flowers themselves. In a beach dune habitat, as Microbembex nigrifrons wasps ap...
Article
Full-text available
Kleptoparasitic spiders live and forage in the webs of other spiders. Using vibratory cues generated by the host spider during prey capture, they leave their resting positions in the upper peripheries of the host web and move towards the centre of the web where they feed along with the host spider or steal small pieces of prey. While the triggers f...
Preprint
Full-text available
Quantum biology seeks to explain biological phenomena via quantum mechanisms, such as enzyme reaction rates via tunneling and photosynthesis energy efficiency via coherent superposition of states. However, less effort has been devoted to study the role of quantum mechanisms in biological evolution. In this paper, we used transcription factor networ...
Article
When an insect is intercepted by a spider web, spiders quickly locate the prey, and run towards it. Once they make contact with the prey, they immobilise the prey and retrieve it to the centre of the web or the retreat for consumption. However, in rare circumstances, the spider can also pull the prey towards itself either while running to the prey...
Article
Virtual Sensor Networks (VSNs) allow to link physical sensor networks (WSNs) and specialized services that permit sensor data gathering, processing, and storing. In this manner VSNs provide concurrent, scalable and flexible access to a common pool of sensor nodes. Cloud computing technologies allow to deal with the WSNs heterogeneity (hardware foot...
Article
Full-text available
Patients undergoing peritoneal dialysis (PD)therapy may present complications of protein-energy wasting, which may be partially produced by inadequate nutrition management and a protein or energy deficiency in the predialytic phase. Therefore, accurate monitoring of the nutrition status during PD therapy can prevent risk conditions in patients with...
Article
Less than 0.2% of all spider species live in close associations with conspecifics. Among these, subsocial spiders show characteristics of both solitary spiders (e.g., individuals disperse for breeding) and social spiders (e.g., prolonged cooperative behaviours at least prior to independent reproduction). Dispersing individuals build small webs, usu...
Article
Full-text available
Colour variation is frequently observed in spiders. Such variation can impact fitness by affecting the way spiders are perceived by relevant observers such as prey (i.e. by resembling flower signals as visual lures) and predators (i.e. by disrupting search image formation). Verrucosa arenata is an orb-weaving spider that presents colour variation i...
Code
Associated Mathematica Notebook for Quantifying Human Visible Color Variation from High Definition Digital Images of Orb Web Spiders PONE-D-16-11428R2 November, 2016, Horacio Tapia-McClung This Notebook was developed in using version 10 of Mathematica and has been tested up to version 11. There is no guarantee that the notebook will work with vers...
Code
Associated Mathematica Notebook for Quantifying Human Visible Color Variation from High Definition Digital Images of Orb Web Spiders PONE-D-16-11428R2 November, 2016, Horacio Tapia-McClung This Notebook was developed in using version 10 of Mathematica and has been tested up to version 11. There is no guarantee that the notebook will work with vers...
Article
Full-text available
Experiments and simulations of the compaction force in a confined binary granular mixture column were conducted. We measured the resistance force encountered by a piston pushing a vertical granular mixture in this confined arrangement. Granular mixtures with two different particle sizes were considered; the size ratio and the size fraction were bot...
Article
Full-text available
Some previous experiments on the collapse of a granular column have reported that the shape of the grains has little influence in the collapse process and the shape of final deposit. In contrast, other studies indicate that the flow of long grains has a very different behavior than that of simple grains. To investigate this apparent discrepancy, we...
Article
We present a practical numerical method for evaluating the Lagrange multipliers necessary for maintaining a constrained linear geometry of particles in dynamical simulations. The method involves no iterations, and is limited in accuracy only by the numerical methods for solving small systems of linear equations. As a result of the non-iterative and...
Article
Using a simple numerical model based on particle dynamics, we perform two-dimensional simulations of granular materials inside a rotating tumbler. Still in its first stages of development, the model can quantitatively reproduce some of the general behavior observed in these systems, both for monodisperse and binary mixtures. Work is currently being...

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