Jose Díaz Donoso - Academia.edu (original) (raw)

Papers by Jose Díaz Donoso

arXiv (Cornell University), 2008

It has been long admitted that a consequence of the virial theorem is that there can be no equili... more It has been long admitted that a consequence of the virial theorem is that there can be no equilibrium configurations of a system of charges in electromagnetic interaction in the absence of external forces. However, recent results have shown that the virial theorem can not preclude the existence of certain nontrivial equilibrium configurations. Although some of these new results are based on an effective microscopic field theory, they are important for a theory of ball lightning that has been developed by the authors of the present work. Other theoretical results relative to magnetic force-free fields with field aligned currents and self-organized filamentary structures are also found to be relevant for this model.

Tonos Digital Revista Electronica De Estudios Filologicos, 2012

La memoria como ficción y la construcción por parte de la literatura, presenta un mosaico que se ... more La memoria como ficción y la construcción por parte de la literatura, presenta un mosaico que se abre ante el escritor en la tarea constante de revisar el pasado y de apelar a la memoria escritora y lectora para escribir el futuro. Esta memoria, como es lógico, dista de la historia y se desarrolla en la sociedad actual ante una rivalidad organizada de las memorias, característica propia de las sociedades pluralistas. La literatura sirve así como recuerdo (que no historia) de las sociedades totalitarias, donde memoria e historia, ambas oficiales, deben coincidir plenamente bajo pena de ser modificadas. The memory, as a fiction and the literature as a construction, is a mosaic that lies before the writer in the ongoing task of reviewing the past and appeal to the memory of the writer and the reader to write the future. This memory, of course, is far from the history and takes place in the modern society inside an organized rivalry memories, characteristic of pluralistic societies. In this sense, the literature serves as a memory (not History) of totalitarian societies, where memory and history, both officers must fully agree under penalty of being modified.

Empresa Y Sociedad Recurso Electronico Respondiendo Al Cambio Comunicaciones Presentadas 2007 Isbn 978 84 96648 10 4 Pag 18, 2007

El artículo analiza los perfiles y enfoques de aprendizaje de una muestra de estudiantes universi... more El artículo analiza los perfiles y enfoques de aprendizaje de una muestra de estudiantes universitarios de contabilidad españoles así como la relación de esos perfiles con el rendimiento académico. El instrumento utilizado consta de las versiones abreviadas tanto del Study Process Questionnarie (SPQ; Fox et al, 2001) como del Problem Solving Style Questionnaire (PSSQ, Romero et al, 1992). La muestra esta compuesta por estudiantes matriculados en las asignaturas de Análisis Contable y Contabilidad Financiera Avanzada durante el curso académico 2005-06 en la universidad de Sevilla.Entwistle Students’ Approaches to Learning framework and Kolb’s Experiential Learning Model has been widely used in higher education. Different inventories have been developed in order to adapt to different contexts and / or to supersede reported weakness. This paper aims to explore the profiles and approaches showed by a sample of Spanish accounting students as well as the relationship of those profiles with the academic performance. The instrument consists of both the short version of the Study Process Questionnaire (SPQ; Fox et al, 2001) and the Problem Solving Style Questionnaire (PSSQ, Romero et al, 1992). The sample is composed by the students enrolled in Advanced Financial Accounting and Financial Statement Analysis during the 2005-06 academic course at the University of Sevilla

Boletin De La Sociedad Espanola De Mineralogia, 1994

Tonos Digital Revista Electronica De Estudios Filologicos, 2014

This article aims to introduce a brief look at the Romanian cinema focusing on communist censorsh... more This article aims to introduce a brief look at the Romanian cinema focusing on communist censorship and the monolithic industrial cinema which taking advantage of a crisis. A critical view that ultimately wonders whether the film texts that have achieved some international recognition have tried constructed within a model recipe for movie-viewer receptor existing beyond Romania. El presente trabajo pretende dar una sucinta mirada al cine rumano centrándonos en la censura comunista y la censura del cine industria que cada vez parece asolar más el panorama internacional, aprovechando momentos de crisis. Una visión crítica que en última instancia, se pregunta si los textos fílmicos que han alcanzado cierto reconocimiento internacional han pretendido construirse dentro de un modelo de cine receta para el receptor-espectador existente allende de las fronteras rumanas.

Collado Villalba y Navacerrada. Presentan direcciones NE-SO y edades K/Ar (roca total) entre 245±... more Collado Villalba y Navacerrada. Presentan direcciones NE-SO y edades K/Ar (roca total) entre 245±7y 220±5Ma (Galindo, com.persj. El conocimiento del régimen tectónico tardihercíico es especialemente interesante dado el control estructural que presentan los procesos de episienitización. Sin embargo, los estudios realizados hasta el momento son generalistas y contradictorios, entre otras razonas por la falta de datos geocronológicos. En general se coincide en una primera etapa extensional, inmediatamente posterior a las principales fases de deformación hercínicas y que controla los procesos de emplazamiento plutónico, con la intervención, conforme aumenta el levantamiento y denudación de la cadena, de estructuras progresivamente más frágiles. Sin embargo, existen discrepancias en cuanto a su finalización. Capote et al. (1987) y Doblas (1991) consideran que la red filoniana intruye bajo un '5-'410 '-1005100.

Revista Universidad Eafit, Jul 10, 2012

In this paper we evaluated the genetic diversity among apricot cultivars of different origins usi... more In this paper we evaluated the genetic diversity among apricot cultivars of different origins using SSR markers. Thirty-one apricot cultivars were evaluated, including one Japanese plum and one apricot x plum hybrid as outgroup. Eleven primer pairs developed in peach were assayed. Seven primer pairs (64% of the assayed markers) were amplified successfully and resulted in 44 polymorphic bands, ranging from 2 (UDP96008) to 8 (UDP98406 and UDP98411) alleles. The observed heterozygosity ranged from 0.09 (UDP96008) to 0.88 (UDP96003). There is a high degree of homology for the SSR loci between peach and apricot and transportability of these markers among Prunus. According to genetic distances obtained within the apricot group, four clusters were identified: Western European;, North American; one cluster including 'Bebeco', 'Tirynthos' and 'Ninfa' and finally another cluster including other North American cultivars. Results show that the cultivars of the American g...

Horticulture Research, 2015

Peach (Prunus persica) and almond (Prunus dulcis) are two sexually compatible species that produc... more Peach (Prunus persica) and almond (Prunus dulcis) are two sexually compatible species that produce fertile offspring. Almond, a highly polymorphic species, is a potential source of new genes for peach that has a strongly eroded gene pool. Here we describe the genetics of a male sterile phenotype that segregated in two almond ('Texas') 3 peach ('Earlygold') progenies: an F2 (T3E) and a backcross one (T1E) to the 'Earlygold' parent. High-density maps were developed using a 9k peach SNP chip and 135 simple-sequence repeats. Three highly syntenic and collinear maps were obtained: one for the F2 (T3E) and two for the backcross, T1E (for the hybrid) and E (for 'Earlygold'). A major reduction of recombination was observed in the interspecific maps (T3E and T1E) compared to the intraspecific parent (E). The E map also had extensive monomorphic genomic regions suggesting the presence of large DNA fragments identical by descent. Our data for the male sterility character were consistent with the existence of cytoplasmic male sterility, where individuals having the almond cytoplasm required the almond allele in at least one of two independent restorer genes, Rf1 and Rf2, to be fertile. The restorer genes were located in a 3.4 Mbp fragment of linkage group 2 (Rf1) and 1.4 Mbp of linkage group 6 (Rf2). Both fragments contained several genes coding for pentatricopeptide proteins, demonstrated to be responsible for restoring fertility in other species. The implications of these results for using almond as a source of novel variability in peach are discussed.

The Scientific World JOURNAL, 2006

One of the most intriguing and enduring scientific challenges is to find an explanation for ball ... more One of the most intriguing and enduring scientific challenges is to find an explanation for ball lightning, the shining fireballs that sometimes appear near lightning strokes. Although many theoretical ideas have been proposed and much experimental work has been performed, there is not yet an accepted explanation of their amazing properties. They are surprisingly stable, lasting up to 10 s, even minutes in some rare cases. By night, their appearance can be spectacular, but their brilliance is just similar to that of a home electric bulb. Most of the time, their motion is smooth and horizontal, but it can also be erratic and chaotic; they can penetrate indoors through window panes. We review here some of the most discussed approaches, including both theoretical models to find an explanation as well as experimental efforts to reproduce them in the laboratory. We distinguish between chemical and physical models, depending on whether their stability is mainly based on their chemical com...

Panorama, 2013

La enseñanza de las ciencias en la población estudiantil joven es unafactor clave para que un paí... more La enseñanza de las ciencias en la población estudiantil joven es unafactor clave para que un país cuente con una masa crítica de ciudadanos,alfabetizada científicamente para que facilite y promueva el desarrollotecnológico, económico y social, bajo un enfoque sustentable. La metodología deenseñanza de las ciencias basada en la indagación (ECBI) se está posicionandointernacionalmente como herramienta pedagógica efectiva para generar en losjóvenes el desarrollo de competencias científicas, tecnológicas y ciudadanas.Este artículo se orienta a presentar los detalles de la implementación de lametodología ECBI en un entorno particular: El Programa de Pequeños Científicos(PPC) en la región central de Tolima, bajo la orientación y gestión de laUniversidad de Ibagué. Haciendo uso de los cuestionarios y la entrevista comoherramientas de consulta, los resultados derivados del análisis estadísticodescriptivo y comparativo de medias, revelan que el perfil institucional, lajornada de clase y el ...

SPE Latin America Petroleum Engineering Conference, 1990

The build-up performance for a vertical and two horizontal welltests in the same formation are in... more The build-up performance for a vertical and two horizontal welltests in the same formation are investigated in this paper. Real time pressure and temperature acquisition were performed with a strain gauge and a downhole cable operated shut-in valve for all three tests. Unfortunately, the amount of time necessary for the horizontal test interpretation analysis to yield unique reservoir and well parameters is found to be insufficient. Thus, external information such as core analysis, deviation surveys and geological modeling is used in order to confirm all the available information. The proposed interpretation methodology is to match the proposed interpretation methodology is to match the actual data to an analytical solution of pressure and its derivative behavior. This is done by adequately combining this external knowledge of the well and reservoir with the calculated parameters from the well test analyses. The values obtained in this way serve the purpose of checking this peripher...

Revista de Contabilidad, 2013

El síndrome de quemarse por el trabajo (SQT), por su alto coste social, ha sido objeto de numeros... more El síndrome de quemarse por el trabajo (SQT), por su alto coste social, ha sido objeto de numerosos estudios. Sin embargo, los instrumentos disponibles no tienen en cuenta la multiplicidad de tareas que caracterizan el trabajo del profesor universitario (docencia e investigación). Los objetivos del trabajo son comprobar si el SQT en los profesores universitarios de contabilidad está más asociado a las actividades docentes o a las actividades investigadoras, y la relación del SQT con determinados factores y consecuentes. El instrumento utilizado es una adaptación del Maslach Burnout Inventory (MBI) que proporciona medidas diferenciadas para docencia e investigación. La muestra está compuesta por profesores universitarios de contabilidad de 41 universidades españolas. Los resultados obtenidos indican niveles más altos de SQT en investigación que en docencia. El género, el tiempo de investigación, el doctorado, el reconocimiento de los estudiantes y la capacidad de decisión aparecen asociados a diferencias en las medidas del MBI. Igualmente, los niveles de SQT aparecen asociados a la intención de abandono. El valor añadido del trabajo estriba en que demuestra que las mediciones realizadas con los instrumentos usuales no son válidas para la población de profesores universitarios, ya que proporcionan una visión incompleta y orientada a la actividad que menos influye en el nivel de SQT.

European Accounting Review, 2007

Accounting is about measuring and communicating. Accounting bodies and employers have expressed o... more Accounting is about measuring and communicating. Accounting bodies and employers have expressed opinions, which have been supported by research results, advocating that greater emphasis is placed on the development of communication skills throughout the education and training of accountants. Consequently, an increasing number of accounting programs now include communication skills as educational objectives or learning outcomes, and have integrated activities into the curriculum specifically to develop these skills. It is important to recognise that certain factors can severely restrict the development of communication skills; a major factor is communication apprehension. Research suggests that the existence of high levels of communication apprehension will make efforts to improve communication skills ineffective. Previous research findings indicate that accounting students have high levels of communication apprehension. This paper compares and contrasts the levels and profiles of communication apprehension exhibited by accounting students at the (UK University) and those at the (ESP University). The levels of communication apprehension are also compared with those of students from other disciplines at the same institutions. The results confirm the high levels of communication apprehension in European accounting students. There are notable differences between the two countries however in certain underlying factors.

Gametophytic self-incompatibility, governed by the S-locus, functions in various Prunus species, ... more Gametophytic self-incompatibility, governed by the S-locus, functions in various Prunus species, including the apricot. Knowledge of the S-genotypes in apricot cultivars is essential to establishing productive orchards, defining combinations of compatible cultivars. The identification and cloning of RNases in related species has enabled the use of molecular techniques to characterize S-genotypes in apricot cultivars. To identify the S-alleles associated with self-incompatibility, three pairs of specific primers were tested using PCR, evaluating 31 apricot genotypes. Only the EM-PC2 + EM-PC3 combination produced satisfactory amplifications for the cultivars studied. The results enabled the characterization of 10 apricot cultivars. This PCR-based molecular tool allows S-genotypes to be characterized quickly and efficiently.

Physica A: Statistical Mechanics and its Applications, 2011

A method to obtain the reinjection probability density (RPD) for systems showing type-III intermi... more A method to obtain the reinjection probability density (RPD) for systems showing type-III intermittency phenomenon is presented. The method emerges as a natural extension of a recent procedure we established to derive the RPD for type-II intermittency. A new twoparameter class of reinjection probability densities is presented to describe a broad class of type-III intermittency maps. Our RPD expression also provides information about the lower bound of the reinjection (LBR). The new characteristic relation ε β depends on the LBR and it has a critical exponent β such that −1 < β < −0.5. The corresponding analytical duration probability densities are also derived in agreement with the numerical computation. The main classical results can be extracted from our RPD as particular cases.

Education + Training, 2000

Distinguishes between communication apprehension (CA), the fear of actually communicating, and co... more Distinguishes between communication apprehension (CA), the fear of actually communicating, and communication development, the ability to maintain and improve performance as a communicator. Indicates that CA needs to be addressed before progress can be made in developing the communication skills of graduates to which employers attach considerable importance. Reports the results of a study comparing levels of CA amongst business and accounting students in the UK and Spain, which confirm the high levels of CA found in North American students but also indicate differences which may be due to cultural and other factors. Considers implications of findings for curriculum design and staff development.

Communications in Nonlinear Science and Numerical Simulation, 2014

This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: http://www.elsevier.com/authorsrights

Accounting Education, 2001

The increasingly dynamic environment in which accountants work has necessitated a reorientation o... more The increasingly dynamic environment in which accountants work has necessitated a reorientation of accounting education. In some countries this issue has raised great interest amongst accounting educators and practitioners. The ongoing debate has already resulted in the publication ...

Advances in Space Research, 2010

Juno, the second mission in the NASA New Frontiers Program, will both be a polar Jovian orbiter, ... more Juno, the second mission in the NASA New Frontiers Program, will both be a polar Jovian orbiter, and use solar arrays for power, moving away from previous use of radioisotope power systems (RPSs) in spite of the weak solar light reaching Jupiter. The power generation at Jupiter is critical, and a conductive tether could be an alternative source of power. A current-carrying tether orbiting in a magnetized ionosphere/plasmasphere will radiate waves. A magnitude of interest for both power generation and signal emission is the wave impedance. Jupiter has the strongest magnetic field in the Solar Planetary System and its plasma density is low everywhere. This leads to an electron plasma frequency smaller than the electron cyclotron frequency, and a high Alfven velocity. Unlike the low Earth orbit (LEO) case, the electron skin depth and the characteristic size of plasma contactors affect the Alfven impedance.