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Search Results: 1 - 10 of 544400 matches for " Marroquín M "
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A Combined Control Chart for Identifying Out–Of–Control Points in Multivariate Processes
Marroquín–Prado E.,Cantú–Sifuentes M.
Ingeniería, investigación y tecnología , 2010,
Abstract: The Hotelling's T2 control chart is widely used to identify out–of–control signals in multivariate processes. However, this chart is not sensitive to small shifts in the process mean vec tor. In this work we propose a control chart to identify out–of–control signals. The proposed chart is a combination of Hotelling's T2 chart, M chart proposed by Hayter et al. (1994) and a new chart based on Principal Components. The combination of these charts identifies any type and size of change in the process mean vector. Us ing simulation and the Average Run Length (ARL), the performance of the proposed control chart is evaluated. The ARL means the average points within control before an out–of–control point is detected, The results of the simulation show that the proposed chart is more sensitive that each one of the three charts individually
Una gráfica de control combinada para identificar se?ales fuera de control en procesos multivariados
Marroquín-Prado, E.;Cantú-Sifuentes, M.;
Ingeniería, investigación y tecnología , 2010,
Abstract: the hotelling's t2 control chart is widely used to identify out-of-control signals in multivariate processes. however, this chart is not sensitive to small shifts in the process mean vector. in this work we propose a control chart to identify out-of-control signals. the proposed chart is a combination of hotelling's t2 chart, m chart proposed by hayter et al. (1994) and a new chart based on principal components. the combination of these charts identifies any type and size of change in the process mean vector. us ing simulation and the average run length (arl), the performance of the proposed control chart is evaluated. the arl means the average points within control before an out-of-control point is detected. the results of the simulation show that the proposed chart is more sensitive that each one of the three charts individually.
Endovascular Management of Pericallosal Artery Aneurysms: A Case Report  [PDF]
Alejandro Rojas-Marroquín
Open Journal of Modern Neurosurgery (OJMN) , 2015, DOI: 10.4236/ojmn.2015.52008
Abstract: This report describes a classic case of pericallosal artery aneurysm and their Angiographic findings and endovascular management.
Gunshot Wound to the Head: Surgical Management and Cases Report in a Tertiary Care Center in Florencia, Colombia  [PDF]
Alejandro Rojas-Marroquín
Open Journal of Modern Neurosurgery (OJMN) , 2015, DOI: 10.4236/ojmn.2015.53014
Abstract: The purpose of this research is to report 10 cases treated in a tertiary care center in the Florencia town in Colombia. The time frame to this intervention was from 1st June 2011 to 30th June 2012. The idea was to establish the type, age group, Matson’s classification schemes and mortality of the gunshot wound to the head in order to describe the neurological functional prognosis of these patients, made by The Modified Rankin scale (mRS) to 12 months postoperative.
A mass collection of Triatoma ryckmani (Hemiptera:Reduviidae)from Stenocereus eichlamii (Cactaceae)in the semiarid region of Guatemala
Marroquín M,Ricardo; Bor A,Silvia; Monroy E,M.Carlota;
Revista de Biología Tropical , 2004,
Abstract: a population of 216 specimens of stenocereus eichlamii (cactaceae,subfamily cereoideae) was surveyed for triatoma ryckmani (vector of chagas disease)in a one hectare plot of semiarid habitat in guatemala. out of 44 plants that had dead and dry sections,24 plants had a total of 103 specimens of t.ryckmani .in comparison with other areas of guatemala,t.ryckmani is well established in the semiarid ecosystem (infestation index 54.5,density =2.3 and crowding index 4.3).the insects were mainly found (52.4%)in the dead portions of s.eichlamii 2.0 to 3.2 m above the ground (x2 =26.0,p<0.00001),followed by dry cactus sections between 3.2 and 5.0 m (35.9%).they were less frequent 0.2 to 2.0 m above the ground.a considerable proportion (75.7%)had no aparent blood in their digestive systems.to determine the presence of flagellates,43 of the bugs were dissected,but none were found.this is the first report on t.ryckmani population dynamics in this habitat. rev. biol. trop. 52(4):931-936.epub 2005 jun 24.
A mass collection of Triatoma ryckmani (Hemiptera:Reduviidae)from Stenocereus eichlamii (Cactaceae)in the semiarid region of Guatemala
Ricardo Marroquín M,Silvia Bor A,M.Carlota Monroy E
Revista de Biología Tropical , 2004,
Abstract: A population of 216 specimens of Stenocereus eichlamii (Cactaceae,Subfamily Cereoideae) was surveyed for Triatoma ryckmani (vector of Chagas disease)in a one hectare plot of semiarid habitat in Guatemala. Out of 44 plants that had dead and dry sections,24 plants had a total of 103 specimens of T.ryckmani .In comparison with other areas of Guatemala,T.ryckmani is well established in the semiarid ecosystem (Infestation index 54.5,density =2.3 and crowding index 4.3).The insects were mainly found (52.4%)in the dead portions of S.eichlamii 2.0 to 3.2 m above the ground (X2 =26.0,P<0.00001),followed by dry cactus sections between 3.2 and 5.0 m (35.9%).They were less frequent 0.2 to 2.0 m above the ground.A considerable proportion (75.7%)had no aparent blood in their digestive systems.To determine the presence of flagellates,43 of the bugs were dissected,but none were found.This is the first report on T.ryckmani population dynamics in this habitat. Rev. Biol. Trop. 52(4):931-936.Epub 2005 Jun 24. En Guatemala,en una hectárea de la región semiárida,se encontraron 216 cactus de Stenocereus eichlamii (Cactaceae),44 de ellos tenían alguna parte del tallo en condiciones secas.103 Triatoma ryckmani fueron halladas en 24 de esos 44 S.eichlamii .Una comparación de los índices entomológicos con otros vectores domiciliares de la enfermedad de Chagas en Guatemala,da la idea que T. ryckmani está bien establecida en el ecosistema semiárido (índice de infestación de 54.5,índice de densidad de 2.3 e índice de hacinamiento de 4.3).Los triatominos fueron hallados preferentemente en las partes muertas de S.eichlamii entre 2.0 a 3.2 m sobre el nivel del suelo (52.4%de triatominos colectados,X 2=26.0,p<0.00001),el siguiente entre 3.2 a 5.0 m (35.9%)y finalmente 0.2 a 2.0 m (11.6%). El 75.7 %estaba en condiciones de ayuno y 24.3 %estaban llenas de sangre.Para determinar la presencia de flagelados,43 T.ryckmani fueron disectadas, (primera evaluación de parasitemia en esta especie).Ningún flagelado fue hallado en estos triatominos.Este es el primer reporte de la dinámica poblacional de T.ryckmani en su hábitat silvestre.
Reinventing Nationalism: Mexico in the Works of José Revueltas
Jaime Marroquín
Trans : Revue de Littérature Générale et Comparée , 2008,
Abstract: José Revueltas fut l’un des premiers intellectuels mexicains à analyser la constitution idéologique du Mexique après la fin de la Revolucion de 1910. Dans son travail, il soutient que le Parti Communiste et plus généralement toutes les forces sociales organisées du pays furent utilisés de fa on très habile par le parti au pouvoir afin de légitimer un nouveau régime bourgeois qui s’est toujours présenté comme socialiste . Les idées politiques de Revueltas ne sont aujourd’hui connues que par une poignée de lecteurs fidèles alors même qu’elles fournissent un cadre critique indispensable pour comprendre la re-définition idéologique du Mexique aujourd’hui. Jose Revueltas was one of the first Mexican intellectuals to analyze the ideological creation of 1910 post-revolutionary Mexico. He argues that the Communist Party and in general the organized social forces of the country were masterfully used by the party in power to legitimize a new "bourgeois" regime which always posed as a "socialist" one. His ideas are only known today by a handful of loyal readers, even though they provide an indispensable critical framework for the understanding of today’s new ideological re-definition of Mexico. José Revueltas fue uno de los primeros intelectuales mexicanos en analizar la creación ideológica de México tras la Revolución de 1910. En su obra, afirmaba que el Partido Comunista y, en general, todos los movimientos sociales organizados del país, fueron usados con enorme habilidad por el partido en el poder para legitimar a través de ellos un nuevo régimen “burgués” que se definió a sí mismo como “socialista”. Las ideas políticas de Revueltas son conocidas hoy tan sólo por sus lectores más devotos ; sin embargo éstas proveen un marco crítico indispensable para un análisis contemporáneo de la nueva redefinición ideológica de México.
Las leyes causales psicológicas ceteris paribus: con excepciones o heteronómicas?
Jorge Tagle Marroquín
Signos filosóficos , 1999,
Abstract: "Las leyes causales psicológicas ceteris paribus: con excepciones o heteronómicas?" Una creencia de origen y circulación popular es la que afirma que, por lo regular, la conducta intencional de una persona debe ser explicada, y con ello, hasta cierto punto, predicha, a partir de aquello que se piensa que es lo más propio de cualquier persona, a saber: sus estados mentales, y particularmente sus creencias y sus deseos. El objetivo del autor es, en este contexto y dando por sentado la pertinencia de las explicaciones intencionales, defender una idea compartida por Fodor y Davidson acerca de la necesidad de leyes causales psicológicas de naturaleza peculiar, a saber, leyes entendidas de manera estricta y no homonómica (o ceteris paribus).“The psychological causal laws ceteris paribus: with exceptions or heteronomicals?”A common and popular belief is the one that declares that, usually, the intentional behavior of an individual must be explained, and therefore, predicted, based on what is thought to he inner self of any person: his mental states and, over all, his beliefs and wishes. The aim of this author is to defend the causal laws of peculiar nature, that is, strict and not homonomical (or ceteres paribus) laws.
Crónica de la prensa salvadore a: imaginarios que migran
Amparo Marroquín Parducci
Encuentro , 2008,
Abstract: EL ARTíCULO PRESENTA UN ESTUDIO DE LAS NARRATIVAS QUE LA PRENSA escrita ha venido construyendo en El Salvador en torno al fenómeno de la migración. Se argumenta que a través del tema de la migración se construye una poética de nación imaginada, y conjuntamente, se da la construcción de las alteridades que desde el discurso oficial se han mantenido vigentes.
Expulsados de la globalización: políticas migratorias y deportados centroamericanos de José Luis Rocha
Amparo Marroquín Parducci
Encuentro , 2011,
Abstract:
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