Papers by Jose Manuel Esparza Rangel
Synergistic phytoceutical compositions
ADCAIJ: Advances in Distributed Computing and Artificial Intelligence Journal, 2013
The water has become in recent years a valuable and increasingly scarce. Its proper use in agricu... more The water has become in recent years a valuable and increasingly scarce. Its proper use in agriculture has demanded incorporate new technologies, mainly in the area of ICT. In this paper we present a smart irrigation system based on multi-agent architecture using fuzzy logic. The architecture incorporates different types of intelligent agents that an autonomous way monitor and are responsible for deciding if required enable / disable the irrigation system. This project proposes a real and innovative solution to the problem of inadequate water use with current irrigation systems employed in agricultural projects. This article presents the different technologies used, their adaptation to the solution of the problem and briefly discusses the first results obtained.
Estudio del efecto del 25 hidroxicalciferol sobre la calcificación del cascaron y la producción de huevo
Revista Mexicana de Ciencias Pecuarias, 1979
Las perdidas economicas que anualmente sufre la industria avicola mundial por concepto de mala ca... more Las perdidas economicas que anualmente sufre la industria avicola mundial por concepto de mala calidad del cascaron son elevadas. Cox (1967) estimo que 6.7% del total de huevos producidos en los Estados Unidos de Norteamerica se pierde por fragilidad del cascaron.
Efecto del reemplazo de pasta de soya por pasta de semilla de calabaza en dietas para aves
Se realizaron 4 experimentos, con objeto de determinar el efecto del reemplazo de soya con pasta ... more Se realizaron 4 experimentos, con objeto de determinar el efecto del reemplazo de soya con pasta de semilla de calabaza (PSC). En el primero, se estudio el efecto de varios niveles (0, 5. 10 y 15%) de PSC en dietas sorgo + soya para pollos de engorda. Los datos a la semana 9 indicaron (P<0.05) que la inclusion de 10% o 15% de PSC reducen la ganancia de peso y aumentan la conversion alimenticia de las aves. En el segundo trabajo, se estudio con pollos de engorda el efecto de la edad (2, 4 y 6 semanas respecto a la toxicidad de la PSC cuando se incluye a altos niveles (25% en la dieta). Los datos indican que la presentacion de sintomas nerviosos semejantes a los de una deficiencia de vitaminas del complejo B o vitamina E en las aves alimentadas con PSC es mayor para pollos jovenes (2 semanas) y disminuye conforme la edad aumenta (4 y 6 semanas). En un tercer experimento con gallinas en postura, se estudio el efecto de otros niveles (0, 10 y 20%) de PSC en dietas sorgo + soya. Los r...
Algunos aspectos biogeográficos de los anfibios y reptiles de la zona El Cardonal-Tolantongo, Hidalgo
Zool Villahermosa Tabasco 220, 1987
Diseno y Montaje De Un Sistema De Control Para Un Motor Unipolar
En los ultimos anos, el estudio de las maquinas unipolares se ha enfocado hacia la busqueda de me... more En los ultimos anos, el estudio de las maquinas unipolares se ha enfocado hacia la busqueda de mejores alternativas de energia. Sin embargo, el fenomeno de la induccion unipolar fue descubierto por Michael Faraday hace ya cerca de doscientos anos y aun hoy en dia, su principio de funcionamiento genera bastante controversia. Las principales discusiones se han centrado en determinar si hay diferencia entre el campo magnetico de un iman rotando y el de uno que se encuentra estacionario, y en esclarecer donde se genera el torque posterior. El motor unipolar es una maquina que en verdad se puede llamar de corriente continua; ya que no necesita de conmutadores para su funcionamiento. Weber bautizo su principio de funcionamiento como Induccion Unipolar ya que el creia que solo uno de los polos del iman estaba produciendo este fenomeno. Por eso el termino que es aceptado y reconocido por la IEEE es el de maquinas aciclicas. La facilidad de montar un motor de esta clase y los estudios que han sido realizados anteriormente permitieron seleccionar la mejor topologia y asi llevar a cabo la elaboracion de un prototipo en funcionamiento, formular su modelo matematico, validarlo experimentalmente y construir un sistema de control de velocidad a lazo abierto.
Immune phyto-neutraceutical composition
Synergistic Anti-Hypertensive Phyto-Nutraceutical Composition
Estados Unidos: ¿Fortaleza o debilidad? El fin de la trasnacionalización
La tesis central discutida en este estudio se articula como sigue: la economia norteamericana ha ... more La tesis central discutida en este estudio se articula como sigue: la economia norteamericana ha mostrado ser la nacion mas poderosa del mundo capitalista de posguerra. No obstante, su fortaleza ha sufrido un proceso de creciente deterioro de su posicion internacional. Este deterioro tiene origenes internos. Se funda en un vertiginoso declinamiento de la rentabilidad del capital, el cual tambien es responsable del abultado deficit federal que experimentan.
The objective of this thesis is to develop an engineering design educational pedagogy on how to i... more The objective of this thesis is to develop an engineering design educational pedagogy on how to improve the engineering design learning experience. The design engineering activity is a complex mix of skills and knowledge that has been taught over decades by directly delivering to the students the design methodologies developed by design researchers and by exposing the students to open ended projects that could develop their design skills. Understanding this we can conclude that the three main pedagogical components of a successful educational design experience are: the design skills, the design methods and the design projects. On one hand, the individual design skills must be properly developed in the student prior to the project experience, making it an overwhelming challenge. On the other hand the design methodologies can be difficult to implement didactically (i.e. teaching techniques), therefore the student struggles to learn, and even more importantly, to embrace such methodologies. We present an approach to design engineering teaching through seven main steps: First, define the desired skills to be acquired by the student during the learning process. Second, from the vast world of design research, select the proper design theories and methodologies that fulfill all the previous requirements of skills. Third, organize the knowledge and skills to be acquired in complexity levels. Fourth, generate educational objectives for each of the knowledge and skills. Fifth, based on educational theories (teaching styles, learning styles, etc.), transform the design skills and methodologies to didactic tasks (lectures, problems, exams, etc.) in such a way that the student will be able to develop their skills and, learn and embrace such methodologies. Sixth, implement the tasks individually along the curriculum as close ended design experiences. Seventh, expose the student to open ended multidisciplinary senior design projects to integrate all the educational design experience components. This model could serve initially as a diagnostic tool to characterize the current set of skills of a given design course or program. The model can also be used to implement educational tasks into the classroom and labs depending on the desired student profile.
Estudio anatómico de la hoja y madera de Alnus acuminata
Macroeconomic Announcements, Price Discovery, and Order Flow Effects in the Stock Market: Evidence from Incomplete Data and Multiple Financial Markets
Aspectos de la ecología, sistemática y evolución de Pseudoeurycea belli, Sceloporus aeneus y Seeloporus grammicus
Herp 25, 1986
Los Perros de la Guerra y el Secreto Militar en Venezuela
Synergistic phytoceutical compositions
Synergistic Inmune Phyto-Nutraceutical Composition
Diagnóstico del sector salud sub-región Mérida
The trajectories of internationalisation followed by family firms can be viewed from several theo... more The trajectories of internationalisation followed by family firms can be viewed from several theoretical approaches: phases and models of the internationalisation process; international entrepreneurship, the sociological perspective and family business theory. A historical perspective of internationalised family firms, allowing for the integration of the abovementioned approaches, is useful to obtain a deep understanding of the internationalisation process of different sectors and of different countries. The main purpose of this paper is to identify the facilitating and restricting factors during the internationalisation path of family firms, whilst considering the influence in their competitive advantages, of ownership structure, management attitudes and other intangible assets, as well as external factors to the firms, like location. The research involved a long run analysis (of more than one century) of two firms which operate in the cork business in Spain and Portugal: Mundet & C.ª, Lda and Corticeira Amorim. One of these companies-Mundetwas closed down in the 1980s and the other-Corticeira Amorim-became, and still is, the leading firm worldwide in the cork industry. A detailed comparison of these two histories-one of failure, and the other of successpermits an accurate identification of the determinants of successful internationalisation. In fact, this comparison is useful for understanding several characteristics of both firms, some of which are similar and others which are different, allowing to test several hypotheses within the context of the theoretical approach of the internationalisation of family firms. This methodological option can be justify by several aspects. Firstly, both are family firms operating in the same business and both were concentrated on the foreign market since their conception. Secondly, both their histories encompass most of the 20th Century and both faced similar national and international constraints, which were overcome, as they both ended up becoming the leading firms in the cork business, although at different periods of time. Thirdly, their choices of location were different and, although in both cases they benefitted from agglomeration forces during certain phases of the business, location was an important determinant of the opposing destinies of these two emblematic cork family firms from Iberia.
Immune phyto-neutraceutical composition
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Papers by Jose Manuel Esparza Rangel