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Pronostico del indice general de la bolsa de valores de colombia usando redes neuronales

One in the ways of measuring the behavior of the economy of a country, is through the local stock exchanges. In Colombia the economic behavior of the Stock exchange is measured mainly through three indicators: the Colcap, the Col20 and the Igbc, this last one is the oldest and more used by the agents that intervene in the market market. Presently document is exposed as predicting the behavior of the market index Igbc through the methodology of the nets neuronales, offering the investor the possibility to project the behavior of the market market Colombian in an efficient way.

SÍNTESIS DE GENERACIÓN DE TRAYECTORIA Y DE MOVIMIENTO PARA MÚLTIPLES POSICIONES EN MECANISMOS, UTILIZANDO ALGORITMOS GENÉTICOS

A method of synthesis for multiple point for path generation and body guide is presented in this paper. Procedures for body guidance synthesis of Four Bar (4B) Mechanisms are extended to six bar (6B) mechanisms. Genetic algorithms are applied into synthesis of mechanisms.

PROCEDIMIENTO PARA LA EVALUACIÓN DE PROVEEDORES MEDIANTE TÉCNICAS MULTICRITERIO

The current competitive requirements have forced the companies to adopt cooperative strategies along their Supply Chain, in order to improve their performance in price, quality, lead time and service. In this sense, the selection of a competitive base of suppliers is very important to achieve better results. For such reason, the present article shows the development of a methodology based on the application of multicriteria techniques that permits the detection of suppliers with critical results as the first step in the design of improvement activities.

ESTUDIO SOBRE LAS LEYES DE DESPLAZAMIENTO EN LOS ENGRANAJES NO CIRCULARES

A study of require characteristics of some functions (Bezier curves, B-splines, cycloidal) for their use as displacement law of noncircular gears is presented in this work. Displaclement law of elliptical gear is also studied. The case with different periods between driver and driven wheels is considered here.

MODELACIÓN MATEMÁTICA EN LA VALUACIÓN DE OPCIONES SOBRE ACCIONES

Oe will be this article principles of the mathematical modeling in the estimateof options on actions, basically n the referred thing to the behavior of the priceof the actions. In order to understand better the operations of these models it is necessary first of all to have certain knowlegde on the behavior of the price of actives saying and the pillars on which the model is based. In synthesis, the general lineamientos the model of the behavior of the prices of the actions are development in this work, theoretical preliminaries to enter itself to the understanding of the model of Black-Scholes itself.

MODELO PARA LA VALORACIÓN Y PREDICCIÓN CUANTITATIVA DE LA CICATRIZACIÓN EMPLEANDO PROCESOS GAUSSIANOS DE REGRESIÓN

The results of the proposed experimental methodology for the quantitative evaluation and prediction of wounds using Gaussian Process Regression are presented. Nine farm rabbits were selected and for each one was done a 400 mm 2 skin resection, to discover the fascia in the back region. The prediction algorithms were developed using the database made from the wound area which was calculated photographically every 8 hours.

GENERACIÓN DE SPREAD SPECTRUM USANDO MICROCONTROLADOR

In this document presents a description of the modulation in Spread Spectrum, as well one of the principal techniques for its obtaining: DSSS (Direct Sequence Spread Spectrum). Also there appears the development of a generating module of Barker code for Spread Spectrum for the technique of direct sequence, based on microcontroller, which allows to realize a real analysis of this technical of modulation, with the purpose of compares its behavior with the theoretical obtained results and the simulations developed in the tool Simulink of Matlab ® .

CONSTRUCCIÓN DE UN TELESCOPIO REFLECTOR NEWTONIANO DE 15 cm

In this document is showed the methodology that is used for designing and construction of a Newtonian reflector telescope of 15 cms objective, 120 cm focal distance, and 8#f installed on an azimuthal saddle. Also the last images of the developed instrument are illustrated and astronomical photographs of some notable celestial objects obtained thanks to the elaborated optical method.

Recuperación Y Soldabilidad De Piezas De Fundición De Hierro

The cast iron display little weldability, nevertheless, under certain cares, these materials can be welded and be recovered following procedures rigorous and selecting electrodes of low heat entrance to increase the weldability. In the fillet weld should be assured that they do not change the mechanical properties of the welded materials and that are not transformations either where fragile structures are obtained, due to. Information appears about the weldability of the cast iron and some recommendations are utility at the time of recovering pieces of cast iron by weld.

Variables latentes para identificar el infarto agudo del miocardio mediante análisis de componentes principales probabilístico.

In this article some partial results from a recent research are presented [1].In the mentioned research a comparison between linear and non linear methods from multivariate analysis is made with the main purpose of selection and feature extraction from electrocardiography signals, this all oriented to identification of sharp infarction of the myocardium. Specifically this article summarizes the results from having applied the Multivariate method of analysis known as Probabilistic Principal Component Analysis (PPCA) to generate a subspace of characteristics of minor dimension than the original one. The precision of the classification of normal and pathological functional states of the myocardium using a Bayesian classifier was also computed. Its associated computational cost was also estimated.