Autoaprendizaje del modelo lineal en un ambiente virtual

Este trabajo expone la primera etapa en el diseño de un ambiente virtual para el tema de ecuaciones lineales de la asignatura cálculo I para ingeniería. La investigación consiste en una propuesta didáctica con la construcción de recursos educativos digitales específicos que involucren texto, imágenes, video, audio, interacción y simulaciones, los cuales se colocarán en una página Web. Los programas informáticos utilizados son GeoGebra, Active Presenter, Wix y Google forms

H-P2PSIP: Interconnection of P2PSIP domains for Global Multimedia Services based on a Hierarchical DHT Overlay Network

The IETF P2PSIP WG is currently standardising a protocol for distributed mul- timedia services combining the media session functionality of SIP and the decentralised distribution and localisation of resources in peer-to-peer networks. The current P2PSIP scenarios only consider the infrastructure for the connectivity inside a single domain. This paper proposes an extension of the current work to a hierarchical multi-domain scenario: a two level hierarchical peer-to-peer overlay architecture for the interconnection of different P2PSIP domains. The purpose is the creation of a global decentralised multimedia services in enterprises, ISPs or community networks. We present a study of the Routing Performance and Routing State in the particular case of a two-level Distributed Hash Table Hierarchy that uses Kademlia. The study is supported by an analytical model and its validation by a peer-to-peer simulator.En prens

Genetic gains in potato breeding as measured by field testing of cultivars released during the last 200 years in the Nordic Region of Europe

Genetic gains (Delta(G)) are determined by the breeders' equation Delta(G) = [(ck sigma(2)(G))/(y sigma(P))], where c, k and y are the parental control, a function of the selection intensity and number of years to complete one selection cycle, respectively, while sigma(2)(G) and are sigma(P) the genetic variance and the square root of the phenotypic variance. Plant breeding programs should deliver above 1% of annual genetic gains after testing and selection. The aim of this research was to estimate genetic gains in potato breeding after testing of cultivars released in western Europe in the last 200 years under high yield potential, and stress-prone environments affected by a pest (late blight) or daylength. The annual genetic gains for tuber yield and flesh's starch content for potato breeding in Europe were about 0.3 and -0.1%, respectively, thus telling that the realized genetic gains of foreign cultivars for both traits are small or negative, respectively, in the Nordic testing sites. The national annual productivity gains in potato grown in Sweden were on average 0.7% in the last 60 years while the genetic gains for tuber yield considering only the table cultivars released after the 2nd World War were about 0.36%, thus showing that breeding contributed just above 1/2 of it. Furthermore, genetic gains for breeding low reducing sugars in the tuber flesh, and high host plant resistance to late blight were small (<0.2% per year). These results highlight that genetic gains are small when testing bred germplasm outside their target population of environments

Are Transaction Costs and Tax Effects Worth the Trouble in Valuation Theory?

Most valuation theory has ignored transaction costs, has either ignored taxes or treated them ad hoc, and has used NPV to value riskless cash flows. Recently, in a new approach, transaction costs were explicitly considered, taxes were treated in more detail, and the single term structure vector of NPV was replaced by a convex multifaceted packet of term structure vectors. Accordingly, simple vector multiplication of cash flows by that single term structure vector was replaced by linear programming over this entire packet. But is the resulting complication worth the trouble? This paper shows that NPV can create substantial errors due to the difference between long and short positions. The biggest errors stem from ignoring short-borrowing costs and can be exacerbated by ignoring taxes. Actual market prices are used along with the transaction cost and tax schedules of major investors, including their four tax payment dates each year

Are Transaction Costs and Tax Effects Worth the Trouble in Valuation Theory?

Most valuation theory has ignored transaction costs, has either ignored taxes or treated them ad hoc, and has used NPV to value riskless cash flows. Recently, in a new approach, transaction costs were explicitly considered, taxes were treated in more detail, and the single term structure vector of NPV was replaced by a convex multifaceted packet of term structure vectors. Accordingly, simple vector multiplication of cash flows by that single term structure vector was replaced by linear programming over this entire packet. But is the resulting complication worth the trouble? This paper shows that NPV can create substantial errors due to the difference between long and short positions. The biggest errors stem from ignoring short-borrowing costs and can be exacerbated by ignoring taxes. Actual market prices are used along with the transaction cost and tax schedules of major investors, including their four tax payment dates each year

INTEL Tecnología de México S. de R. L. de C. V. Guadalajara Design Center

El presente proyecto, pretende tener un impacto directo en los métodos de comunicación diarios de la sociedad, debido al uso de radio bases donde tendrán marca mis contribuciones, se espera que la infraestructura del 5G de soporte a edificios, hogares y ciudades inteligentes; expanda la realidad virtual y los videos en 3D; además, permita trabajar desde la nube sin interrupciones. Con la ayuda del presente proyecto de aplicación profesional (PAP), se desarrolla un plan de continuidad y entregables que serán clave para la ejecución de este proyecto.ITESO, A.C

Genome-Based Genotype × Environment Prediction Enhances Potato (Solanum tuberosum L.) Improvement Using Pseudo-Diploid and Polysomic Tetraploid Modeling

Potato breeding must improve its efficiency by increasing the reliability of selection as well as identifying a promising germplasm for crossing. This study shows the prediction accuracy of genomic-estimated breeding values for several potato (Solanum tuberosum L.) breeding clones and the released cultivars that were evaluated at three locations in northern and southern Sweden for various traits. Three dosages of marker alleles [pseudo-diploid (A), additive tetrasomic polyploidy (B), and additive-non-additive tetrasomic polyploidy (C)] were considered in the genome-based prediction models, for single environments and multiple environments (accounting for the genotype-by-environment interaction or G × E), and for comparing two kernels, the conventional linear, Genomic Best Linear Unbiased Prediction (GBLUP) (GB), and the non-linear Gaussian kernel (GK), when used with the single-kernel genetic matrices of A, B, C, or when employing two-kernel genetic matrices in the model using the kernels from B and C for a single environment (models 1 and 2, respectively), and for multi-environments (models 3 and 4, respectively). Concerning the single site analyses, the trait with the highest prediction accuracy for all sites under A, B, C for model 1, model 2, and for GB and GK methods was tuber starch percentage. Another trait with relatively high prediction accuracy was the total tuber weight. Results show an increase in prediction accuracy of model 2 over model 1. Non-linear Gaussian kernel (GK) did not show any clear advantage over the linear kernel GBLUP (GB). Results from the multi-environments had prediction accuracy estimates (models 3 and 4) higher than those obtained from the single-environment analyses. Model 4 with GB was the best method in combination with the marker structure B for predicting most of the tuber traits. Most of the traits gave relatively high prediction accuracy under this combination of marker structure (A, B, C, and B-C), and methods GB and GK combined with the multi-environment with G × E model

Modelo de simulación de la operación de un embalse en avenida y su integración al sistema FEWS

En este trabajo se presentan dos modelos de gestión de embalses en avenidas, el primero, basado en reglas de operación de los órganos de desagüe definidas por el usuario y, el segundo, correspondiente al método de gestión programada de embalses de Girón. Se incluye además un módulo que integra ambos métodos al sistema hidrometeorológico de alerta temprana FEWS

Bistratamides M and N, Oxazole-Thiazole Containing Cyclic Hexapeptides Isolated from Lissoclinum bistratum Interaction of Zinc (II) with Bistratamide K

[Abstract] Two novel oxazole-thiazole containing cyclic hexapeptides, bistratamides M (1) and N (2) have been isolated from the marine ascidian Lissoclinum bistratum (L. bistratum) collected in Raja Ampat (Papua Bar, Indonesia). The planar structure of 1 and 2 was assigned on the basis of extensive 1D and 2D NMR spectroscopy and mass spectrometry. The absolute configuration of the amino acid residues in 1 and 2 was determined by the application of the Marfey’s and advanced Marfey’s methods after ozonolysis followed by acid-catalyzed hydrolysis. The interaction between zinc (II) and the naturally known bistratamide K (3), a cyclic hexapeptide isolated from a different specimen of Lissoclinum bistratum, was monitored by 1H and 13C NMR. The results obtained are consistent with the proposal that these peptides are biosynthesized for binding to metal ions. Compounds 1 and 2 display moderate cytotoxicity against four human tumor cell lines with GI50 values in the micromolar range.Ministerio de Economía, Industria y Competitividad; RTC-2016-4611-