Conjugando espacios y alianzas para nombrar lo andino en el siglo XXI: análisis de dos novelas de Ulises Gutiérrez Llantoy

This article aims to redefine the identity traits of an Andean protagonist presented in the narrative of Peruvian author Ulises Gutiérrez Llantoy. In first novel, Ojos de pez abisal, I shall concentrate on the way he modifies the traditional landscape. Andean geography is readjusted as it is presented through the eyes of an andino living in Japan. His second novel, Cementerio de barcos, presents the global experience of the main character, how he engages in the construction of urban alliances as part of peripheral dynamics. Gutiérrez Llantoys’s Andean protagonist emerges as a polyglot inhabitant of shanty towns, a world traveler that loves rock. Following James Holston’s concept of insurgent citizenship, I aim to reveal the contribution of recent Andean narrative to the global debate on identity construction. This exploration of the globalized andino implies taking on the challenge of redescribing traditional Andean components in a radical new setting.Modern and Contemporary Studie

De los sueños del Mariel a los inhóspitos arenales de Villa El Salvador, en Perú

Modern and Contemporary Studie

Sensitivity analysis in a camera-LiDAR calibration model

Recientemente, la fusión de datos entre una cámara y un sensor de profundidad del tipo LiDAR se ha convertido en un problema de gran interés en la industria y en la ingeniería. La calidad de los modelos 3D producidos depende, en buena manera, de un proceso correcto de calibración entre ambos sensores. En este artículo, se realiza un análisis de sensibilidad en un modelo de calibración cámara-LiDAR. Se ha calculado individualmente la variabilidad de cada parámetro por el método de Sobol, basado en la técnica de ANOVA, y el método FAST, que se basa en el análisis de Fourier. Se han definido los parámetros más sensibles y con mayor tendencia a introducir errores en nuestra plataforma de reconstrucción. Se han simulado múltiples conjuntos de parámetros para su análisis y comparación utilizando los métodos de Monte Carlo e Hipercubo Latino. Se muestran estadísticas sobre la sensibilidad total y global de cada parámetro. Además, se presentan resultados sobre la relación de sensibilidad en la calibración cámara-LiDAR, el costo computacional, el tiempo de simulación, la discrepancia y la homogeneidad en los datos simulados.Recently the data fusion between a camera and a depth sensor of LiDAR type, has become an issue of major concern in industry and engineering. The quality of the delivered 3D models depends greatly on a proper calibration between sensors. This paper presents a sensitivity analysis in a camera-lidar calibration model. The variability of each parameter was calculated individually by the Sobol method, based on ANOVA technique, and the FAST method, which is based on Fourier analysis. Multiple sets of parameters were simulated using Monte Carlo and Latin Hypercube methods for the purpose of comparing the results of the sensitivity analysis. We defined which parameters are the most sensitive and prone to introduce error into our reconstruction platform. Statistics for the total and global sensibility analysis for each sensor and for each parameter are presented. Furthermore, results on the sensitivity ratio on camera-LiDAR calibration, computational cost, time simulation, discrepancy and homogeneity in the simulated data are presented.Peer Reviewe

Parametric Polyhedra with at least kk Lattice Points: Their Semigroup Structure and the k-Frobenius Problem

Given an integral $d \times n$ matrix $A$, the well-studied affine semigroup \mbox{ Sg} (A)=\{ b : Ax=b, \ x \in {\mathbb Z}^n, x \geq 0\} can be stratified by the number of lattice points inside the parametric polyhedra $P_A(b)=\{x: Ax=b, x\geq0\}$. Such families of parametric polyhedra appear in many areas of combinatorics, convex geometry, algebra and number theory. The key themes of this paper are: (1) A structure theory that characterizes precisely the subset \mbox{ Sg}_{\geq k}(A) of all vectors b \in \mbox{ Sg}(A) such that $P_A(b) \cap {\mathbb Z}^n$ has at least $k$ solutions. We demonstrate that this set is finitely generated, it is a union of translated copies of a semigroup which can be computed explicitly via Hilbert bases computations. Related results can be derived for those right-hand-side vectors $b$ for which $P_A(b) \cap {\mathbb Z}^n$ has exactly $k$ solutions or fewer than $k$ solutions. (2) A computational complexity theory. We show that, when $n$, $k$ are fixed natural numbers, one can compute in polynomial time an encoding of \mbox{ Sg}_{\geq k}(A) as a multivariate generating function, using a short sum of rational functions. As a consequence, one can identify all right-hand-side vectors of bounded norm that have at least $k$ solutions. (3) Applications and computation for the $k$-Frobenius numbers. Using Generating functions we prove that for fixed $n,k$ the $k$-Frobenius number can be computed in polynomial time. This generalizes a well-known result for $k=1$ by R. Kannan. Using some adaptation of dynamic programming we show some practical computations of $k$-Frobenius numbers and their relatives

Cosmological Equation of State and Interacting Energies

In this paper we study a model of cosmic evolution, assuming that the different components of the universe could interact between them any time. An effective equation of state (EOS) for the universe has been used as well. A particular function for w, which gives a good agreement between our results and the experimental data, has been studied. Finally, the model obtained has been applied to different important cases

Exploring Health Science Students’ Notions on Organ Donation and Transplantation: A Multicenter Study

The knowledge acquired during university education about organ donation and transplantation (ODT) decisively influences the information future health professionals transmit. This is important in ODT where the participation of the general public is essential to obtain organs. Objective: To determine notions of Spanish medicine and nursing students on ODT and its relationship with attitude toward ODT. Methods and Design: and design. We conducted a sociologic, multicenter, and observational study. The population for our study consisted of medical and nursing students in Spanish universities. Our database was the Collaborative International Donor Project, stratified by geographic area and academic course. A validated questionnaire (PCID-DTO-RIOS) was self-administered and completed anonymously. Our sample consisted of 9598 medical and 10, 566 nursing students (99% confidence interval; precision of ±1%), stratified by geographic area and year of study. Results: The completion rate for our study was 90%. Only 20% (n=3640) of students thought their notions on ODT were good; 41% (n=7531) thought their notions were normal; 36% (n=6550) thought their notions were scarce. Comparing groups, there were differences between those who believed that their notions on ODT were good (44% nursing vs 56% medical students; P < .000), and those who believed it scarce (54% nursing vs 46% medical students; P < .000). Notions on ODT were related with attitude toward the donation of one''s own organs: those who considered their notions were good were more in favor then those who considered it scarce (88% vs 72%; P < .000). Conclusion: Only 20% of Spanish medical and nursing students thought their notions on ODT were good. Having good knowledge is related to a favorable attitude towards ODT. Receiving specific information on the subject could improve their knowledge about ODT during their training