Quintín Martin

• PhD
• Professor (Full) at University of Salamanca

More and more our society is linked to the stability of financial markets and this stability depends on key players like private companies, financial markets, investors, analysts, government control agencies and so on. Sarbanes-Oxley Act is a mandatory law in EEUU market and a facto standard in rest of the world and has as main objective to keep th...

The temporal behavior of the annual frequency of heat and cold waves observed between 1961 and 2010 is established for the Spanish Central Plateau and for the two sub-areas in it. The series of daily maximum and minimum temperature anomalies for the working areas were calculated from the daily data concerning temperature anomalies. The thresholds o...

GC-C-IRMS analysis of FAMEs as a tool to ascertain the diet of Iberian pigs used for the production of pork products with high added value Taste, quality and perceived health benefits result in a high demand for both green and mature pork products derived from the Iberian bred swine. These characteristics are directly related to diet and breeding s...

The objective of this paper is to define a decision support system over SOX (Sarbanes-Oxley Act) compatibility and quality of the Suppliers Selection Process based on Artificial Intelligence and ArgumentationTheory knowledge and techniques.Thepresent SOX Law, in effect nowadays, was created to improve financial government control over US companies....

An empirical methodology to fit a model for forecasting climate variables is developed. The method is based on an artificial neural network (ANN) of the multilayer perceptron type (MLP). To configure the model, the series of mean monthly minimum temperature (TminMean) data observed at a weather station in Avila (Central Spanish Plateau), belonging...

A study was undertaken to establish the spatio-temporal behavior of the extreme daily values of atmospheric pressure at ground level in a zone comprising the central part of the Iberian Peninsula (Spanish Central Plateau). The study involves the time period between 1961 and 2003. From the data series of minimum values of daily pressure, measured at...

This paper introduces the SHOMAS Multiagent System that provides guidance on leisure facilities and suggestions for shopping in malls. The multiagent architecture incorporates reactive and deliberative agents that take decisions automatically. The developed deliberative agent provides suggestions in execution time, with the help of case-based plann...

Using data sets on the daily data of maximum atmospheric pressure at ground level collected at 14 weather stations located in the central zone of the Iberian Peninsula [Spanish central plateau (SCP)], the series of daily maximum pressure anomalies at each station, together with the difference between the daily value and mean daily value for each da...

This paper presents a multiagent model that facilitates aspects of shopping mall management, as well as increasing the quality of leisure facilities and shopping on offer. The work presented focuses on the use of a multi agent architecture, based on the use of deliberative agents that incorporates case-based planning. The architecture considers a d...

This paper presents a multiagent model that provides recommendations on leisure facilities and shopping on offer to the shopping mall users. The multiagent architecture incorporates deliberative agents that take decisions with the help of case-based planners. The system has been tested successfully, and the results obtained are presented in this pa...

Con datos diarios de temperaturas máximas y mínimas, medidos en 8 observatorios de las regiones de Madrid y Castilla la Mancha, en el intervalo de tiempo de 1961 a 2003, se construyen las series de anomalías de las temperaturas máximas y mínimas diarias para cada una de ellas. A partir de esas series se obtienen las series regionales de anomalías c...

A partir de series de datos diarios de valores máximos y mínimos de la presión atmosférica a nivel del suelo en 9 observatorios de Castilla y León, se establecen las series de anomalías diarias de presión máxima y mínima en cada uno de ellos, para el intervalo de tiempo 1974-1995, y se construyen las series regionales de dichas anomalías para toda...

We propose a normality test based on some transformations of Johnson S U for b 1 and S L for b 2 -1-b 1 . We study its power with a large variety of alternative distributions, comparing it with the power of other currently used omnibus tests as well as with the unidirectional b 1 and b 2 . We offer tables for critical values of the test, calculated...

En este trabajo se determina una transformación tipo arco seno para una distribución hipergeométrica H(N,D = pN,n) de forma que estabilice la varianza de la misma en función de la fracción p de objetos de un cierto tipo. Como caso particular de las expresiones obtenidas se deducen las dadas por F. J. Anscombe (1948) para la distribución binomial B(...

This paper presents a hybrid deliberative architecture based on the concept of CBPBDI agent. A CBP-BDI agent is a BDI agent that incorporates a CBP reasoning engine. The work here presented focuses in the development of the CBP internal structure. The planning mechanism has been implemented by means of a novel FYDPS neural network. The system has b...

RESUMEN Basándonos en la prueba de normalidad de Geary, actual, aunque de la década de los 30, sencilla de aplicar y con buenas propiedades en cuanto a la potencia, hemos construido una nueva prueba de normalidad para muestras censuradas. Ésta se fundamenta en que en una distribución normal el cociente entre las desviaciones media y típica es const...

RESUMEN Basándonos en la prueba de normalidad de Geary hemos construido una nueva prueba de normalidad para muestras censuradas. Con siete distintos estimadores de la desviación media y la típica calc ulamos nuestras tablas de cuantiles. Posteriormente, comparamos nuestra prueba en cuanto a la potencia con otras pruebas de normalidad ya conocidas (...

Título en la cubierta: Aplicaciones de las redes neuronales artificiales a la estadística Contenido: Introducción a las redes neuronales artificiales (RNA); Algunos modelos de redes neuronales artificiales; La RNA y la estadística.

Realizado en la Facultad de Ciencias de Salamanca, por 2 profesores del centro, para las asignaturas de Investigación Operativa y Técnicas de Investigación Operativa para las titulaciones de Matemáticas, Estadística e Informática. En este proyecto se han centrado en la elaboración de un software de Investigación Operativa que cubriera los aspectos...