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Search Results: 1 - 10 of 44073 matches for " Alejandro Hernández Lugo "
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TEORíA DE SISTEMAS EN LAS ORGANIZACIONES
Alejandro Hernández Lugo
Ingeniería Industrial , 2003,
Abstract: Reflejar y caracterizar dos puntos de vista con los que se pueden enfocar y administrar el trabajo en una empresa, y conocer las ventajas y desventajas que tiene una visión respecto a la otra puede ser un buen comienzo para aplicar la teoría de sistemas en las organizaciones.
ENFOQUE POR PROCESOS, LA CADENA VITAL DE LA ORGANIZACIóN
Alejandro Hernández Lugo
Ingeniería Industrial , 2003,
Abstract: Determinar los elementos que conforman la cadena de valor de una organización puede resultar muy provechoso, más aún si se es capaz de identificar qué actores se encuentran entre los clientes y los proveedores, las relaciones que se establecen entre ellos; y sus características, para esto emplear un enfoque por procesos sería un método directo y con grandes posibilidades de éxito, no sería otra cosa que sacar a la luz la cadena vital de la organización.
GESTIóN POR PROCESOS
Alejandro Hernández Lugo
Ingeniería Industrial , 2003,
Abstract: La gestión por procesos en una organización encierra un significado diferente a lo que podría ser un simple enfoque, o una aproximación para mejorar una tarea o varias, implica la planificación,organización, control y dirección de las actividades. La RAE define este vocablo como: gestión: acción de administrar algo. Los procesos se deben administrar.
REFLEXIONES SOBRE LA INTEGRACIóN ESTRATéGICA Y SU NECESIDAD DE IMPLEMENTACION
Juan García Gómez,Alejandro Hernández Lugo
Ingeniería Industrial , 2002,
Abstract: Se abordan las tendencias de los cambios de las organizaciones en la época actual, con el propósito de reflexionar sobre la necesidad e introducción de la Integración Estratégica, como una nueva filosofía en la administración moderna.
Parámetros reproductivos de un banco de Germoplasma de Pijiguao (Bactris gasipaes HBK) en el Estado Amazonas, Venezuela
Lugo Soto,María; Infante,Jesús; Hernández,José; Orozco,Alejandro;
Bioagro , 2005,
Abstract: an essay was conducted at the seven year-old peach palm germplasm collection of the national research center for agriculture in puerto ayacucho, venezuela, during production years between 2001 and 2003 to evaluate some reproductive plant parameters. fruits were harvested as reaching maturity in the months of february, march, and april. cluster and fruit variables were measured according to describer list for germplasm groups. analysis of data were carried out by descriptive statistics. from 40 accessions conforming the germplasm collection, 65.4 % of them produced fruits during the evaluation period although only 12.5 % did it during the three consecutive years. the average production was 2.24 clusters per plant, with 78.2 fruits per cluster and 2.06 kg total cluster weight. among the accessions that yield fruits in the three consecutive years, those identified as numbers 24 and 31 reached the highest production for both fruits and clusters.
Parámetros reproductivos de un banco de Germoplasma de Pijiguao (Bactris gasipaes HBK) en el Estado Amazonas, Venezuela
María Lugo Soto,Jesús Infante,José Hernández,Alejandro Orozco
Bioagro , 2005,
Abstract: Se condujo un ensayo, entre los a os 2001 y 2003, en la colección del banco de germoplasma de pijiguao de siete a os de edad del Instituto Nacional de Investigaciones Agrícolas en Puerto Ayacucho, estado Amazonas, con la finalidad de evaluar algunos parámetros reproductivos de la planta. Los frutos se cosecharon en los meses de febrero, marzo y abril, en la medida que fueron madurando. Se evaluaron variables del racimo y fruto de acuerdo a la lista de descriptores para bancos de germoplasma. Los datos se analizaron mediante estadística descriptiva. De las 40 accesiones que conforman el banco de germoplasma el 65,4 % de la población logró fructificar durante el período de evaluación, aunque sólo 12,5 % de ellas lo hizo durante los tres a os consecutivos. La producción promedio fue de 2,24 racimos por planta, con 78,2 frutos por racimo y 2,06 kg el peso promedio del racimo. Entre las accesiones que fructificaron los tres a os, las identificadas con los números 24 y 31 destacaron como las de mayor rendimiento, tanto en frutos como en racimos producidos. An essay was conducted at the seven year-old peach palm germplasm collection of the National Research Center for Agriculture in Puerto Ayacucho, Venezuela, during production years between 2001 and 2003 to evaluate some reproductive plant parameters. Fruits were harvested as reaching maturity in the months of February, March, and April. Cluster and fruit variables were measured according to describer list for germplasm groups. Analysis of data were carried out by descriptive statistics. From 40 accessions conforming the germplasm collection, 65.4 % of them produced fruits during the evaluation period although only 12.5 % did it during the three consecutive years. The average production was 2.24 clusters per plant, with 78.2 fruits per cluster and 2.06 kg total cluster weight. Among the accessions that yield fruits in the three consecutive years, those identified as numbers 24 and 31 reached the highest production for both fruits and clusters.
Bayesian Posterior Predictive Probability Happiness  [PDF]
Gabriela Rodríguez-Hernández, Galileo Domínguez-Zacarías, Carlos Juárez Lugo
Applied Mathematics (AM) , 2016, DOI: 10.4236/am.2016.78068
Abstract: We propose to determine the underlying causal structure of the elements of happiness from a set of empirically obtained data based on Bayesian. We consider the proposal to study happiness as a multidimensional construct which converges four dimensions with two different Bayesian techniques, in the first we use the Bonferroni correction to estimate the mean multiple comparisons, on this basis it is that we use the function t and a z-test, in both cases the results do not vary, so it is decided to present only those shown by the t test. In the Bayesian Multiple Linear Regression, we prove that happiness can be explained through three dimensions. The technical numerical used is MCMC, of four samples. The results show that the sample has not atypical behavior too and that suitable modifications can be described through a test. Another interesting result obtained is that the predictive probability for the case of sense positive of life and personal fulfillment dimensions exhibit a non-uniform variation.
Culture and Molecular Identification of Helicobacter pylori in Drinking Water from Areas of High and Low Incidence of Gastric Cancer in Costa Rica  [PDF]
Virginia Montero Campos, Alejandro Hernández Soto, Jorge Camacho Sandoval
Open Journal of Medical Microbiology (OJMM) , 2014, DOI: 10.4236/ojmm.2014.44030
Abstract: Background: Most patients infected with Helicobacter pylori show no clinical symptoms. Nonetheless, approximately 10% to 20% of these patients will develop peptic ulcers and 1% will develop gastric cancer. The International Agency for Cancer Research has classified Helicobacter pylori as a Group 1 carcinogen. Materials and Methods: Drinking water samples from 20 cantons situated in areas of low and high incidence of gastric cancer in Costa Rica were analyzed. Water samples were concentrated and the nitrocellulose filter was cultivated for later molecular identification of Helicobacter pylori using the glmM marker. The tumor necrosis factor-alpha inducing protein (Tipalpha TNF-α) was used as a pathogenicity marker of the strains found followed by the sequencing of two products. Information on water management by aqueduct operators was collected in order to establish statistical relationships. Results: A total of 112 water samples were analyzed. Successful cultivation and molecular identification using the glmM marker was achieved in 39% of samples from areas of high incidence and in 7.5% of samples from areas of low incidence. Two glmM gene PCR products were sequenced and confirmed as true positives. Conclusions: The highest prevalence rate of Helicobacter pylori was found in water from areas with a high incidence of gastric cancer. Additionally, significant statistical correlations were established among environmental conditions, drinking water management and incidence of gastric cancer.
Recruitment Age of Litopenaeus vannamei (Boone, 1931) (Decapoda: Penaeidae) in the Cabeza De Toro-La Joya Buenavista Lagoon System, Oaxaca-Chiapas, Mexico  [PDF]
Pedro Cervantes- Hernández, Pablo Torres- Hernández, Mario Alejandro Gómez- Ponce
Open Journal of Marine Science (OJMS) , 2017, DOI: 10.4236/ojms.2017.74036
Abstract:
At present, the fishery of Litopenaeus vannamei continues overexploited in the Gulf of Tehuantepec (GT), Mexico. From the available literature it was demonstrated that marine closure systems implemented in GT have not worked adequately since 1993, because these are completely protecting marine recruitment seasons, and reproductive seasons were only partially considered to protect. Due to these problems, new marine closure systems were proposed in the literature, but they were not accepted by fishermen from GT because they did not include marine and lagoon recruitment information. For this reason, in this study both recruitment types were analyzed with estimations on the recruitment age (RA), and its relationship with total length and weight. To the Cabeza de Toro la Joya Buenavista lagoon system (CTJB-LS), it was concluded that young recruits migration toward outside CTJB-LS elapsed between 3 and 5-m-olds, with the highest recruit flow in 4-m-olds. Thus, this last age was called the RA of L. vannamei (at 106 mm). Maximum marine recruitment ranked from June to July, and maximum reproductive seasons were in October. In both recruitment seasons it was observed that biomass production was different. In marine season RA recorded 8.4 g more than lagoon season at the same size. Results were used in order to discus about atarraya nets uses, and to propose the implementation of a lagoon closure during July inside lagoon systems located in GT. With this proposal artisanal fishermen will be allowed to use atarraya nets with mesh opening of 25.4 mm during June, and they will obtain a good biomass production level as economic support.Additionally, with new marine closure systems shrimp reproductive seasons will be protected (from July to November).
Rese a de "De tierras extra as. Un estudio sobre la inmigración en México, 1950-1990" de Mónica Palma Mora
Manuel Alejandro Hernández Ponce
Culturales , 2011,
Abstract:
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