Suemi Rodriguez-Romo

Suemi Rodriguez-Romo
Universidad Nacional Autónoma de México | UNAM · School of Higher Studies (F.E.S.) Cuautitlán

PhD

About

86
Publications
3,315
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318
Citations
Additional affiliations
February 2015 - April 2015
Humboldt-Universität zu Berlin
Position
  • Invited researched
January 1983 - present
Universidad Nacional Autónoma de México
Position
  • Proffesor

Publications

Publications (86)
Article
Full-text available
The growth of small communication devices has pushed designers to design compact‐size antennas. These antennas must be low cost, lightweight, needed for mechanically robust construction, and ease of installation. In this paper, we use a novel genetic algorithm (GA) to produce an ensemble of compact self‐avoiding (SA) antennas such that the voltage...
Article
We explore the use of deep artificial neural networks (DNNs) to impute data to the experimental data reported by the methane hydrate crystal growth at a bubble surface reported in the literature (Ma, et al., 2002; Sun et al., 2007). We use a genetic programming symbolic regressor to propose a novel empirical rate equation as a function of the tempe...
Article
A new solver, via the enthalpy multiple-relaxation lattice Boltzmann method, is developed to simulate the Ga melting (considering Ga as a phase change material) for different settings. At first, the phase change simulation of a simple bar is performed, this case is implemented to validate the heat transfer in our model via the analytical solution....
Article
Full-text available
The water phantom is used as a standard device for the calibration of measuring instruments used in radiation therapy. To carry out this calibration, it is essential to characterize the distribution of the percent depth dose (PDD) along the central reference axis, since this is where the instruments to be calibrated are located. The PDD depends on...
Article
In this paper we propose a lattice Boltzmann model for a parachute shaped red blood cell, a nanobot and a tumor inside a blood capillary. The nanobot delivers Placlitaxel which interacts with the tumor shrinking its size. We perform several simulations and report new phenomena. This is a complex problem due to the multi physics cross-scaling nature...
Article
In this paper, we present a model of the gamma irradiation room at the National Institute of Nuclear Research (ININ is its acronym in Spanish) in Mexico to improve the use of physics in dosimetry for human protection. We deal with air-filled ionization chambers and scientific computing made in house and framed in both the GEANT4 scheme and our anal...
Article
This paper deals with the application of a numerical method to a non-destructive testing, describing the thermal behavior of surface flaws. This article was focused only to the two-dimensional case by solving the overall heat transfer model and applying boundary element method (BEM), to obtain the temperature variation versus time for different are...
Article
A computational algorithm based on the lattice Boltzmann method (LBM) is proposed to model reaction–diffusion systems. In this paper, we focus on how nonlinear chemical oscillators like Belousov–Zhabotinsky (BZ) and the chlorite–iodide–malonic acid (CIMA) reactions can be modeled by LBM and provide with new insight into the nature and applications...
Article
Full-text available
We perform a computer simulation of the reaction-diffusion and convection that takes place in Rayleigh-Bénard and Bénard-Poiseuille regimes. The lattice Boltzmann equation (LBE) is used along with the Boussinesq approximation to solve the non-linear coupled differential equations that govern the systems' thermo-hydrodynamics. Another LBE, is introd...
Article
Inspired in some well-known experimental cases, where non symmetrical configurations appear, we present a model of three Diffusion Limited Aggregation (DLA) clusters and focus on the central aggregate while the lateral clusters are moving apart from it over an axis that joins the three of them, so the central one can be view as an object under the...
Article
Full-text available
We discuss the formalism of two Higgs doublet model type III with CP violation from CP-even CP-odd mixing in the neutral Higgs bosons. The flavor changing interactions among neutral Higgs bosons and fermions are presented at tree level in this type of model. These assumptions allow the study rare top decays mediated by neutral Higgs bosons, particu...
Article
We show the methodology used to analyze fractal and mass-multifractal properties of very large Diffusion-Limited Aggregation (DLA) clusters with a maximum of 109109 particles for 2D aggregates and 108108 particles for 3D clusters, to support our main result; the scaling behavior obtained by our experimental results corresponds to the expected perfo...
Article
The morphology evolution of Metropolitan Urban Areas constituted by different Central Business Districts is studied in this paper. For this matter, we propose a stochastic model which combines an initial percolation setting followed by a diffusion-limited aggregation mechanism. Our model mimics better than either case (percolation or diffusion-limi...
Chapter
An integral urban growth model is introduced. We developed this model to capture the different spatial morphologies and urban dynamics observed when more than one city are interacting on a specific region creating large metropolitan areas at different geographical scales. For small scales (1:1500000) our model is based on two well-known fractal gro...
Article
We deal with some matters needed to construct concrete left Hopf algebras for inhomogeneous quantum groups produced as noncommutative symmetries of fermionic and bosonic creation/annihilation operators. We find a map for the bidimensional fermionic case, produced as in Manin's [Quantum Groups and Non-commutative Hopf Geometry (CRM Univ. de Montréal...
Article
A few of the applications of the Lattice Boltzmann Method have been used to model the complex bioelectrochemical phenomena presented here; cyclic voltammetry of electrically assisted enzyme reactions for one instance, and complex chemical reactions with simultaneous momentum, heat and mass transfer as another example. In the first case, we reproduc...
Article
Full-text available
In this work we consider a left–right model containing mirror fermions with gauge group SU(3)C ⊗ SU(2)L ⊗ SU(2)R ⊗ U(1)Y′. The model has several free parameters which here we have calculated by using the recent values for the squared-neutrino mass differences. Lower bound for the mirror vacuum expectation value helped us to obtain crude estimations...
Article
This paper deals with the computational simulation of the reaction-diffusion-advection phenomena emerging in Rayleigh-Bénard (RB) and Poiseuille-Bénard reactive convection systems. We use the Boussinesq's approximation for buoyancy forces and the Lattice Boltzmann method (LBM). The first kinetic mesoscopic model proposed here is based on the discre...
Article
A modified Vicsek–Szalay model is introduced. From this, experiments are performed in order to simulate the spatial morphology of the largest metropolitan area of México: a set of clusters formed by the Valle de México metropolitan area (VMMA), Puebla metropolitan area (PMA) and Toluca metropolitan area (TMA). This case is presented in detail and h...
Article
Full-text available
Starting from the photon self-energy tensor in a magnetized medium, the 3D complete antisymmetric form of the conductivity tensor is found in the static limit of a fermion system $C$ non-invariant under fermion-antifermion exchange. The massless relativistic 2D fermion limit in QED is derived by using the compactification along the dimension parall...
Article
Full-text available
An algorithm for performing distance queries between a large number of points stored in quadtrees and octrees is developed and tested for the construction of diffusion-limited aggregates. The structure of the trees is the only feature used for the determination of approximate distances at any stage. These techniques allowed us to build DLA clusters...
Article
Full-text available
A simple an effective algorithm for performing distance queries between a large number of points stored in quadtrees and octrees. The algorithm is developed and tested for the construction of diffusion-limited aggregates. To achieve an enhancement on the searching time we accept approximate distance values with low precision at the first levels of...
Article
Full-text available
The traceability of polyethylcyanoacrylate nanoparticles transported through human skin is studied in this paper. Photoluminescence is used to find the precise diffusion path of polyethylcyanoacrylate nanoparticles through the skin stratum corneum (SC). Reproducible data were obtained, and the nanoparticles’ distribution in each layer of the SC is...
Article
In this paper we study the growth probability and cluster morphologies which emerge in an off-lattice, two-dimensional, colored diffusion-limited aggregation model for urban dynamics, particularly migration. To reach this goal, three immobile interacting clusters that include the geographical concept of gravity are studied by exact enumeration. In...
Article
Effective permeability of porous media in subsurface environments (or packed beds in reactors, for instance) is subject to potentially large uncertainties due to heterogeneity of natural systems. We present a lattice Boltzmann method (LBM) to study the flow of single-phase non-Newtonian fluids by using a power law effective viscosity in different b...
Conference Paper
Full-text available
Being one of the most interesting compounds in the universe, water substance possesses a large number of well-established solid-state polymorphs commonly known as ices, along with liquid, vapor and amorphous phases. Thermodynamics of ices and their equations of state are of fundamental importance for such areas of science and technology as oceanogr...
Presentation
Full-text available
Being one of the most interesting compounds in the universe, water substance possesses a large number of well-established solid-state polymorphs commonly known as ices, along with liquid, vapor and amorphous phases. Thermodynamics of ices and their equations of state are of fundamental importance for such areas of science and technology as oceanogr...
Article
From rheological experiments in gelatinized sago starch solution already reported in the literature and a Lattice-Boltzmann simulation, we provide some insight into the understanding of the non-Newtonian fluid dynamics of sago-starch-type solutions in porous media. In this paper, permeability and wall shear stress in arbitrarily generated and rando...
Article
A new equation of state of ice Ih recently proposed by Feistel and Wagner [J. Phys. Chem. Ref. Data 35 (2006) 1021–1047] is used to study the phenomena related to the equilibrium isentropic compression of an ice–water mixture and dynamic loading of solid ice. New results are presented concerning the properties of the new equation of state, equilibr...
Article
This paper presents a novel approach to on-line, robot-motion planning for multiple 2D moving-objects interception. The proposed approach utilizes the time parametric function of one or more moving objects to generate the multiple interception trajectory. This methodology is efficient for the slow-maneuvering objects with constant aceleration in in...
Article
In the present study, the emulsification-diffusion method was optimized in order to obtain omapatrilat/monolein-nanoparticles (omapatrilat/MO-nanoparticles). The antihypertensive effect of omapatrilat/MO-nanoparticles in spontaneously hypertensive rats (SHR) after oral administration was evaluated. The results indicated that the variables involved...
Chapter
We study the q-deformation of the Clifford algebras that come out in a natural way for fermions and bosons in Fock space. An analysis of three particular cases; the transformation of fermion (bosons) among themselves, the linear combination of fermions (bosons) in order to get bosons (fermions) and a supersymmetric transformation, is carried out.
Article
Ethylcyanoacrylate nanoparticles (40–100 nm) were synthesized to act as potential skin drug carriers. A novel multiscale non-linear model, based on an oscillatory mechanism, which includes polymerization, de-polymerization, re-polymerization and cluster dynamics, is shown to fit the kinetics experimental data and it is used to estimate the amount o...
Article
Bialgebras with a left antipode but no right antipode were constructed in the early 1980s in [J.A. Green et al., Left Hopf algebras, J. Algebra 65 (1980) 399–411; W.D. Nichols, E.J. Taft, The left antipodes of a left Hopf algebra, in: Contemp. Math., vol. 13, Amer. Math. Soc., 1982, pp. 363–368]. Recently, in [S. Rodríguez-Romo, E.J. Taft, Some qua...
Article
A theoretical analysis of the growth probability measure as well as multifractal dimensions and maximum (minimum) growth probability in the so-called bicolored diffusion limited aggregation (BDLA) model is presented. This model deals with the competing growth of two colored immobile fractal clusters.
Conference Paper
In this paper Brusselator-based and Oregonator-based Digital Reaction-Diffusion Systems (DRDS) are introduced. These systems are used in fingerprint enhancement, as an example. An introductory, comparative analysis of image-enhancement stability and performance is also provided.
Article
In this paper the author first reviews his results on representations of q-spinors (q 3 ,q 4 ≠1) by 4×4 complex matrices which are later used to obtain new concentration profiles and connected two-point correlation functions of linear chains with three different types of particles hopping and interchanging among themselves with left end open. Theor...
Article
In this paper we split the defining relations of the two well known one-parameter quantizations of GL(2), Manin and Dipper–Donkin, into two bialgebras. We recombine these bialgebras to obtain two-parameter quantum groups. We find “one-sided preantipodes” for these bialgebras. By fixing the condition for these maps to be an antiautomorphism of the w...
Article
Following the method already used to obtain quantum chains with Dipper-Donkin global symmetry,14 we obtain all possible four-state quantum chains with SLq(2,C) global symmetry when q is not a root of unity. One of these Hamiltonians is written in terms of matrix units, as an example.
Article
Starting with only three of the six relations defining the standard (Manin) GL q (2), we try to construct a quantum group. The antipode condition requires some new relations, but the process stops at a Hopf algebra with a Birkhoff–Witt basis of irreducible monomials. The quantum determinant is group-like but not central, even when q = 1. So, the tw...
Article
Thermodynamic properties of high-pressure solid phase ice II are studied theoretically. The P–V–T equation of state of ice II is derived and its thermodynamic functions are calculated based on the available experimental data. New results are presented concerning the equilibrium solid–solid phase transitions between ice II and ice Ih, ice II and III...
Article
Full-text available
Experiments indicate that water ice subjected to shock-wave loading undergoes multiple non-equilibrium phase transitions (Larson D.B., J. Glaciology, 30:235, 1984.) Kinetic model of multiple phase changes in ice (Tchijov V. et al., J. Phys. Chem., 101:6215, 1997) is based on the complete set of P-V-T equations of state of ices Ih, III, V, VI, VII a...
Article
Experimental studies of shock-wave loading of ice (D.B. Larson, J. Glaciol., 1984, Vol.30, p.235) indicate multiple solid-solid and solid-liquid phase transitions. In order to model these phase changes, we develop a complete set of the P-V-T equations of state of ices Ih, II, III, V, VI, and VII. We study the isoentropes of ice-water mixture along...
Article
Full-text available
We compute the dispersion curves for neutrinos propagating in a very dense electroweak plasma, in magnetic fields of order B less than or equal to M(W)(2)/e. The neutrino self-energy is calculated in the one-loop approximation. The dispersion equation is solved for motion parallel and perpendicular to the external magnetic field. We obtain an effec...
Article
Full-text available
We analize the role of GL_2, a quantum group constructed by Dipper-Donkin, as a global symmetry for quantum chains, and show the way to construct all possible Hamiltonians for four states quantum chains with GL_2 global symmetry. In doing this, we search all inner actions of GL_2 on the Clifford algebra C(1,3) and show them. We also introduce the c...
Article
Full-text available
Following the method already developed for studying the actions of GL_q(2,C) on the Clifford algebra C(1,3) and its quantum invariants (Commun. in Algebra 27, 1843-1878(1999)), we study the action on C(1,3) of the quantum group GL_2 constructed by Dipper and Donkin. We are able of proving that there exists only two non-equivalent cases of actions w...
Article
We analyze the effects arisen from the mixing of heavy neutral fermions with the standard neutrinos in the SU(6)L ⊗ U(1)Y model. We obtain limits on the mixing angles between nue, numu, nutau and the heavy neutral fermions of the model; these results are consistents with those predicted by using certain experimental constraints. This model also giv...
Article
Random walks with nearest neighbors prohibited, of lengths N up to 1024 steps, are studied on the three-dimensional diamond lattice. This is a model to describe steric effects given by geometrical constraints on the conformation of macromolecules. Short walks (N
Article
Full-text available
We compute the effective magnetic moment of neutrino in the highly dense and strongly magnetized media. It is shown that this magnetic moment is generated due to the effective mass of neutrino and gives sufficiently high value of the magnetic moment in the core of neutron stars.
Article
The longitudinal polarization function of a quasi-one-dimensional electron gas (Q1DEG) confined in a semiconductor quantum well wire (QWW) is given in the random-phase approximation (RPA) for the cases where T = 0 K and , taking into account the lack of spatial invariance in the plane of the cross-section of the QWW. It is given as a sum of terms i...
Article
Following the method already developed for studying the actions of GL(q)(2, C) on the Clifford algebra C(1, 3) and its quantum invariants [1], we study the action on C(1,3) of the quantum GL(2) constructed by Dipper and Donkin [2]. We are able of proving that there exits only two non-equivalent cases of actions with nontrivial "perturbation" [1]. T...
Article
Full-text available
A complete classification is given of all inner actions on the Clifford algebra C(l,3) defined by representations of the quantum group GLq (2,C)qm ≠1, which are not reduced to representations of two commuting “q-spinors”. As a consequence of this classification it is shown that the space of invariants of every GLq (2,C)-action of this type, which i...
Article
Full-text available
We present all inner actions on the Clifford algebra C(1,3) of the quantum group GL_2 constructed by Dipper and Donkin.
Article
We study the distribution of the end-to-end distance of continuous-time self-avoiding random walks (CTRW) in dimension four from two viewpoints. From a real-space renormalization-group map on probabilities, we conjecture the asymptotic behavior of the end-to-end distance of a weakly self-avoiding random walk (SARW) that penalizes two-body interacti...
Article
Experimental investigation of shock-wave loading of ice (Larson, D. B. J. Glaciol. 1984, 30, 235) indicates a series of phase transitions in ice and gives evidence of the important role the kinetics plays in the process of dynamic phase transformations in ice. In order to model multiple phase changes in ice subjected to impulsive loading, thermodyn...
Article
Full-text available
We compute the dispersion curves for neutrinos propagating in an extremely dense electroweak plasma, in the presence of very strong magnetic fields of order $B \le M_W^2/e$. The neutrino self-energy is calculated in the one-loop approximation. We consider only contributions of the first Landau level to the propagator of the W-bosons, and distinguis...
Article
A two-dimensional model for random diffusion-limited aggregation of particles of two different types (colors A and B) on a square lattice is studied by computer simulation. Two parameters are essential to the model - the distance d between two initial seed particles, and the probability p for a randomly moving particle to be A-colored. Intensive nu...
Article
Full-text available
We present a new real space renormalization-group map, on the space of probabilities, to study the renormalization of the SUSY \phi^4. In our approach we use the random walk representation on a lattice labeled by an ultrametric space. Our method can be extended to any \phi^n. New stochastic meaning is given to the parameters involved in the flow of...
Article
Full-text available
We present a short review of the action and coaction of Hopf algebras on Clifford algebras as an introduction to physically meaningful examples. Some q-deformed Clifford algebras are studied from this context and conclusions are derived. Comment: 27 pages, Latex2e, to appear in Found. of Phys
Article
Full-text available
It is shown that if the ring of constants of a restricted differential lie algebra with a quasi-Frobenius inner part satisfies a polynomial identity (PI) then the original prime ring has a generalized polynomial identity (GPI). If additionally the ring of constants is semiprime then the original ring is PI. The case of a non-quasi-Frobenius inner p...
Article
Full-text available
We propose a model for the simultaneous diffusion-limited growth of two clusters A and B, where the growth of one cluster screens the growth of the other one. We consider the possibility that the A and B dusters can penetrate into each other in course of their growth in different spatial dimensions and express the conjecture that the A-B boundary i...
Article
Full-text available
We present a real space renormalization-group map for probabilities of random walks on a hierarchical lattice. From this, we study the asymptotic behavior of the end-to-end distance of a weakly self- avoiding random walk (SARW) that penalizes the (self-)intersection of two random walks in dimension four on the hierarchical lattice.
Conference Paper
Full-text available
Real space renormalization-group for configurational random walk models on a hierarchical lattice. The asymptotic end-to-end distance of a weakly SARW in dimension four. Abstract. We present a real space renormalization-group map for probabili-ties of random walks on a hierarchical lattice. From this, we study the asymptotic behavior of the end-to-...
Article
Full-text available
An introduction to Hopf algebras as a tool for the regularization of relevant quantities in quantum field theory is given. We deform algebraic spaces by introducingq as a regulator of a noncommutative and noncocommutative Hopf algebra. Relevant quantities are finite providedq ? 1 and diverge in the limitq ? 1. We discussq-regularization on differen...
Article
We present the Dirac propagator constructed as a directed random walk on a sphere, for Chevalley-Crumeyrolle spinors. The resulting Green function is used, in the framework of a supersymmetric (SUSY) algebraic valued field theory, to represent fermionic and bosonic interactions. This algebraic approach is compared with some other formulations of th...
Article
A regularization scheme for quantum field theories given in aq-mutator algebra for the internal momentum space in a loop integration is constructed. We show Feynman integrals that are finite forq 1but diverse asq 1. Using this regularization scheme, we propose a renormalization program in q-mutator space (q-renormalization program) for thef 4 theor...
Article
The directed random walk representation of the Dirac propagator is presented using different algebraic spinor spaces. In particular, Majorana, Even, Dirac, and Chevalley–Crumeyrolle spinor spaces are used. For these cases, the spin connections were calculated and, from them, the gauge potentials. Moreover, for the Chevalley–Crumeyrolle algebraic sp...
Article
We present the Dirac propagator as a random walk on anS D–1 sphere for Majorana spinors, even spinor space, Dirac spinors, and Chevalley-Crumeyrolle spinors built from Minkowski space. We propose the Dirac propagator constructed from Chevalley-Crumeyrolle spinors as the generators of a Markov process such that McKane-Parisi-Sourlas theorem can be...
Article
We show that the full set of Fierz identities which are used to compute electro-weak interactions reported by Y. Takahashi can be considered as particular cases of the Clifford product between multivector Cartan maps. Moreover, we think that our approach can be generalized to higher-dimensional models. We discuss the factorization and inversion the...
Article
Dirac's matrices can be interpreted as an 8-rank covariant antisymmetric tensor field on an 11-dimensional manifold (space-time S 7) enforcing a linkage between the Lorentz transformation and rotations ofS 7, conferring spinorial properties on any quantity having an index in the inner spaceS 7.
Article
The (generalized) Fierz identities are shown to reduce to a single equation, a relation between the elements of a multivector Clifford algebra. For this purpose we use a multivectorial generalization of the spinors to vectors Cartan’s map. The method is put in a general form such that the vectors correspond to spacetime as a base space and isotopic...
Article
Special scalar fields on an 11-dimensional manifold (space-time ×S 7) are shown to be equivalent to relativistic spinor fields. The scalar fields are chosen as the lowest spherical harmonics on the S 7 (dipole field). Their components, being ordinary space-time fields, are the components of the spinor fields. Crucial for this model is an 8-rank ant...
Article
In an 11-dimensional manifold with topology ℜ7 ×S 7 (Minkowski-space times 7-dimensional sphere) we construct a completely antisymmetrical 8-rank tensor field (equivalent to the Pauli matrices) performing a symmetry breaking so that a Lorentz-transformation must be linked with a rotation of the internal spaceS 7. Certain scalar fields are then desc...
Article
A multivectorial generalization of the spinors to vectors Cartan map is constructed, with space-time as a base space, constructed from spinors (Dirac spinors and spinors pairs being particular cases) onto a multivector space with two internal symmetries: one of them is the fundamental space-time Clifford group C(1,3) and the other an ‘‘isotopic spa...
Article
In vector spaces of dimensionn=p+q a multivector (Clifford) algebraC(p, q) can be constructed. In this paper a multivectorC(p, q) representation, riot restricted to the bivector subalgebraC 2(p, q), is developed for some of the Lie groups more frequently used in physics. This representation should be especially useful in the special cases of (grand...
Article
Some invariance transformations of the braid group are used to construct crystallographic and lattice representations. A set of related properties are analyzed.
Article
The multivectorial generalization of the Cartan map, for C(1,3) space‐time Clifford algebra and an arbitrary gauge group in an isotopic space, is applied to the standard Dirac equation to generate the multivectorial Dirac equation. Using both geometrical and physical reasoning, a particular case discussed by Reifler and Morris [J. Math. Phys. 26, 2...
Article
The Clifford formulation of fermionic and bosonic statistics in Fock space is extended to be related with the quantum superspaces constructed by Manin. This extension generates a quantum group structure, associating string spaces to the model that reflects the behavior of nature namely a linear transformation among fermions (bosons). The symmetry o...
Article
We replace invariant integration over momentum space by invariant integration over the vector representation of SO q (3,1). Our invariant measure is reduced to an SU q (2) invariant one by imposing the q-time zero projection. Finally, we show the null directions in the SO q (3,1) Hopf algebra that lead to a quantum Galilei group.

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