oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 9 )

2019 ( 33 )

2018 ( 57 )

2017 ( 47 )

Custom range...

Search Results: 1 - 10 of 20975 matches for " Alexander Barrios Sanjuanelo "
All listed articles are free for downloading (OA Articles)
Page 1 /20975
Display every page Item
Abordaje de un grupo familiar con displasia ectodérmica hipohidrótica a partir de salud familiar
Sara Caro de Pallares,Carlos Silvera-Redondo,Alexander Barrios Sanjuanelo,Rina Marenco Robles
Revista Salud Uninorte , 2011,
Abstract: La salud del grupo familiar está sujeta a una complejidad de condiciones socioeconómicas, culturales, ambientales, biológicas, genéticas, psicológicas y relacionales, que configuran los factores condicionantes de la salud. Por lo anterior, la Salud Familiar incide de manera importante en la dinámica poblacional, en el desencadenamiento de la enfermedad, en el cumplimiento de funciones claves en el desarrollo biopsicosocial del ser humano y en las decisiones acerca de la utilización de los servicios de salud. En las familias con enfermedades de origen genético, sus miembros desarrollan temores a morir a una determinada edad. El caso objeto de estudio se presentó en un centro de salud de la ciudad de Barranquilla (Colombia) con una escolar que llegó a control de Crecimiento y Desarrollo, quien fue asignada a un estudiante para su seguimiento. Luego de una evaluación médica multidisciplinaria, fue diagnosticada Displasia Ectodérmica Hipohidrotica.
Abordaje de un grupo familiar con Displasia Ectodérmica Hipohidrotica a partir de Salud Familiar
Caro de Pallares,Sara; Silvera-Redondo,Carlos; Barrios Sanjuanelo,Alexander; Marenco Robles,Rina; Viloria Doria,Juan Carlos; Hinestroza Vargas,Jesús; ocarrás,Rosa; Gutiérrez Cantillo,Esteyci;
Revista Salud Uninorte , 2011,
Abstract: the health of a family group is subjected to complex socio-economic, cultural, environmental, biological, genetic, psychological and relational factors, that shape health conditions, as it affects population dynamics in the onset of the disease, in fulfilling key roles in the biopsychosocial development of human beings and in decisions about the use of health services. in families with genetic diseases, their members develop fears to die at a certain age. the situation to be presented has occurred in a health center in the city of barranquilla (colombia), a schoolgirl who has arrived in the facilities for monitoring of growth and development is assigned to a student for follow up. she is diagnosed with hipohidrotic ectodermal dysplasia.
“Association between Feelings about Competition and Self-Reported Happiness: Do Racial Differences Matter?” Evidence from the World Value Surveys  [PDF]
Juan Barrios
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.45026
Abstract: Drawing on individual data from the World Values Surveys, this paper estimates the importance of racial differences in the relation between individual feelings about competition and self-reported happiness. Racial or ethnic characteristics are split as Asians, Blacks and Whites. In general, people who think competition is good are associated to the same (high) level of happiness as do people who think competition is harmful. Blacks, however, appear to shy away from competition probably because they are not the winners in the competitive process of capitalism. Results among blacks within different countries show similar patterns. These findings are different than and complement previous research which shows a positive or negative relation between competition and well-being. The paper improves over previous research in that it approximates competitive environment by using individual-level measures and considers the relevance of cultural differences. Instrumental variable analysis suggests that there may be a relation of causality stemming from competition to happiness. The paper conjectures about the reasons why individuals who find competition as harmful report higher levels of happiness but do not attempt to establish causality directions.
Aspectos biométricos y dinámica reproductiva de la langosta espinosa, Panulirus argus, en áreas de pesca de la costa norte de la Península de Paria, estado Sucre, Venezuela
Gómez,Gabriel; Guzmán,Ramón; Barrios,Alexander;
Zootecnia Tropical , 2007,
Abstract: abstract the size structure of cephalothorax (lc) and the reproductive characteristics of the spiny lobster, panulirus argus, from the northern coast of paria peninsula were analyzed in order to facilitate the evaluation of the resource and to suggest management policies. in this sense, a total of 1270 animals were measured from those landed by the fleet of puerto santo, which were sampled monthly between november 2003 and april 2004. most of the animals in the sample (61%) were below the minimum legal size for lc (120 mm), being the average for females 109.4 mm and for males 121.1 mm, with significant differences between sexes (p<0.05). the general average size was 115.9 mm. a common length - weight regression equation was defined as: p = 0.0051*(lc)2.61. the proportion of sexes was significantly in favor of males (1:1.29) (p<0.001). the largest frequency of mature females was observed in november (40%) and december (27%), being the spermatophore plate the main reproductive indicator, since 71% of the mature females showed this property. the size at which 50% of females were mature was estimated in the interval 100-109.9 mm lc, and is still considered overestimated
Producción somática y mortalidad en una población de la almeja, Asaphis deflorata, en la localidad de Caurantica, golfo de Paria, estado Sucre, Venezuela
Prieto,Antulio; Marcano,Jesús; Barrios,Alexander; González,Luis;
Zootecnia Tropical , 2009,
Abstract: the somatic production, mortality and the length-dry mass relationships of wild population of the clam asaphis deflorata from caurantica, located in the southern coast of peninsula of paria, venezuela was studied. samples were collected monthly from march 2005 until march 2006 using a stratified random sampling with a quadrate of 0,25 m2. monthly dry mass average was 20,08 g/m2, with a mean density of 71,63 ind/m2 that changed significantly with time. growth parameters according to the von bertalanffy equation estimated from the size frequency distributions were: l∞=72,75 cm and k=0,72. the instantaneous mortality rate z was 2,81/year, equivalent to an annual mortality rate of 94%. a somatic production of 38,06 g/m-2 year-1 was obtained with the weight specific growth rate method and the greatest production values were obtained for bivalves 38,00 to 46,00 mm in length. the annual turnover rate p/b was estimated as 1,90/year, indicating that the population has potential to almost double the biomass yearly
Crecimiento del maíz y los pastos (Brachiaria sp.) establecidos en monocultivo y asociados en suelos ácidos del piedemonte llanero colombiano
Rincón álvaro,Ligarreto Gustavo,Sanjuanelo Danny
Agronomía Colombiana , 2007,
Abstract: El experimento se desarrolló en el piedemonte llanero de Colombia, donde el establecimiento y recuperación de praderas con el cultivo del maíz, es una opción productiva para los sistemas ganaderos de la región. En un dise o de bloques completos al azar con cuatro replicaciones, se evaluó el establecimiento de maíz y pastos en monocultivo y asociados (Brachiaria decumbens , Brachiaria cv. Mulato y Toledo (Brachiaria brizantha)), con el fin de determinar la existencia de efectos de competencia sobre los rendimientos de grano de maíz y sobre la producción de forraje de los pastos. El periodo de evaluación comprendió desde los 15 hasta los 90 días después de la siembra (dds), época en la cual el maíz ya se encontraba en proceso de secado. El crecimiento del maíz no fue afectado por la presencia de los pastos, obteniéndose el índice de área foliar de 3, a los 45 dds y la mayor producción de masa seca a los 66 dds con 29 g MS/planta. Por su parte, el crecimiento de los pastos sí fue afectado por la presencia del maíz durante todo el periodo de evaluación. El área foliar y la masa seca en los pastos asociados con maíz fue inferior en un 50% con respecto a los pastos establecidos sin maíz, de forma que a los 75 dds el índice de área foliar de los pastos asociados con maíz fue de 1,0 y en los pastos en monocultivo fue de 2,6. De igual forma, la masa seca fue de 68 g·m-2 y de 140 g·m-2 en el mismo orden. La asociación de maíz con pastos es una buena opción para el establecimiento o renovación de praderas porque los rendimientos de maíz no fueron afectados por la presencia de los pastos. Los pastos asociados con el maíz presentaron un crecimiento más lento en los primeros 75 dds, sin afectar el crecimiento del maíz, sin embargo durante los 15 días siguientes, el índice de área foliar se incrementó en 170% y la masa seca en 53%, por el secado natural de la planta de maíz que permitió la entrada de radiación solar directa.
Crecimiento del maíz y los pastos (Brachiaria sp.) establecidos enmonocultivo y asociados en suelos ácidos del piedemonte llanero colombiano
Rincón,álvaro; Ligarreto,Gustavo A.; Sanjuanelo,Danny;
Agronomía Colombiana , 2007,
Abstract: the experiment was carried out in the piedemont plains of colombia, where the establishment and recuperation of grasslands associated with corn culture is a productive option for the livestock farmers of the region. under a randomized complete block design with four replicates, the establishment of corn in monoculture and association with grasses (brachiaria decumbens, brachiaria cv. mulato and toledo (brachiaria brizantha)) was evaluated in order to determine the existence of competition and its effect on the grain yield in corn and forage production in grasses. the period of evaluation was from 15 up to 90 days after sowing (d.a.s.), a time period, in which corn was already in drying process. the growth of corn was not affected by the presence of grasses, being characterized with leaf area index (lai) equal to 3 at 45 d.a.s. and the highest dry weight production of 29 g dm/plant at 66 d.a.s. at the same time, the presence of corn do affected the growth of grasses during the whole period of evaluation. the leaf area and dry weight of grasses associated with corn were reduced on 50% as compared with those of grasses grown without corn, so that at 75 d.a.s. the lai was 1.0 and 2.6 in grasses associated with corn or monoculture, respectively. in any case, the dry weight was of 68 g·m-2 and 140 g·m-2 for the same treatments. the cultivation of corn with grasses is a good option for the establishment or renovation of grasslands because the corn yields were not affected by the grass presence. the grasses associated with corn presented a slow growth during the first 75 d.a.s., without affecting the growth of corn, however, during the 15 following days, the lai and dry weight were increased on 170% and 53%, respectively, due to natural drying of corn plants that allowed the penetration of direct solar radiation.
A Multi-Leveled Approach to Intrusion Detection and the Insider Threat  [PDF]
Rita M. Barrios
Journal of Information Security (JIS) , 2013, DOI: 10.4236/jis.2013.41007
Abstract:

When considering Intrusion Detection and the Insider Threat, most researchers tend to focus on the network architecture rather than the database which is the primary target of data theft. It is understood that the network level is adequate for many intrusions where entry into the system is being sought however it is grossly inadequate when considering the database and the authorized insider. Recent writings suggest that there have been many attempts to address the insider threat phenomena in regards to database technologies by the utilization of detection methodologies, policy management systems and behavior analysis methods however, there appears to be a lacking in the development of adequate solutions that will achieve the level of detection that is required. While it is true that Authorization is the cornerstone to the security of the database implementation, authorization alone is not enough to prevent the authorized entity from initiating malicious activities in regards to the data stored within the database. Behavior of the authorized entity must also be considered along with current data access control policies. Each of the previously mentioned approaches to intrusion detection at the database level has been considered individually, however, there has been limited research in producing a multileveled approach to achieve a robust solution. The research presented outlines the development of a detection framework by introducing a process that is to be implemented in conjunction with information requests. By utilizing this approach, an effective and robust methodology has been achieved that can be used to determine the probability of an intrusion by the authorized entity, which ultimately address the insider threat phenomena at its most basic level.

Parámetros de crecimiento y mortalidad total de la sardina Sardinella aurita (Valenciennes, 1810) en el Nororiente Venezolano durante el período 1990 a 2008
Barrios,Alexander; Guzmán,Ramón; Mendoza,Jeremy; Gómez,Gabriel; Vizcaino,German;
Zootecnia Tropical , 2010,
Abstract: sardinella aurita is the main species exploited by small-scale fisheries in northeastern venezuela and represents an important source of low cost protein in the venezuelan market. due to natural variability its economic, social and ecological relevance this resource is under a regular monitoring program to obtain biological information and fishery. in this context, in this study growth parameters (l∞ and k) of the von bertalanffy growth equation and total mortality (z) were estimated from length frequency data. we used modal decomposition of length frequencies and then monthly growth increments to estimate l∞ and k by the method of fabens (1965). parameter estimates were obtained for the total study period (l∞ = 326 mm and k= 0,66 year-1) and for three subperiods: 1) 1990-1995 (l∞ = 375 mm and k= 0,45 year-1); 2) 1996-2001 (l∞ = 348 mm and k= 0,62 year-1) and 3) 2002-2008 (l∞ = 266 mm and k= 1,30). confidence intervals were estimated from joint likelihood profiles. total mortality(z) was determined by the method proposed by ehrhardt and ault (1992), with an average z of 5,41 year-1 (range 2,01 - 9,26 year-1) with an increasing trend during the study period. the variability of the growth and mortality rate of the sardinella aurita in the northeastern region, they are due to a combination of environmental factors and of fishing exploitation.
Curva de selección de Litopenaeus schmitti y dos especies ícticas, capturados por la pesca artesanal de arrastre camaronera en el Golfo de Paria, estado Sucre, Venezuela
Marval,ángel; Altuve,Douglas; Gil,Humberto; Vizcaíno,Germán; Gómez,Gabriel; Barrios,Alexander;
Zootecnia Tropical , 2011,
Abstract: the extraction of penaeid shrimp in estuarine stage, is an activity that generates a continuous fishing pressure on the coastal ecosystems of the intertropical zone, for that reason this study aims to evaluate the selectivity of the artisanal trawl system with the ?chica? shrimp net. the catches were made between april and november 2008, using a trawl net with 11 m of length and 2.5 cm of mesh`s ligth and a small boat powered by two engines. in each sweep the bottom was trawled at depths below 5 m during 30 min. net recovered the organism obtained were separated and weighed respectively. three kg samples were transported refrigerated to the inia laboratory in cumana, sucre state. once there, they were taxonomically identified and a measured using a measuring board. size structures of litopenaeus schmitti were built separated by sex, cetengraulis edentulus and cathorops spixii, aplying the logistic equation to determine the range and size of selection respectively. the size range for female white shrimp fluctuated between 60 and 235 mm and the selection size l50% was 138.62 mm, whereas in males the size distribution was shown between 80 and 190 mm with a l50% of 131.09 mm. in the fishes, it was observed size range that oscillated between 55 and 195 mm in c. spixii and 75 and 170 mm c. edentulus, with a l50% of 105.19 mm and 124.19 mm respectively. it was observed that the gear used in this fishery is very selective as it retains a large number of bodies, most of them without having reached a commercial size.
Page 1 /20975
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.