12,894 research outputs found
Analysis and adaptation system for points for driving licenses colombia, spanish model based on
El sistema por puntos aplicado en España se tiene como referencia para ser analizado y puesto marcha en el territorio colombiano, a partir de este proyecto tomado como referencia se realiza un estado del arte sobre los avances desde el año 2006 luego de implementado, y así analizar los requerimientos técnicos y de procedimiento para ser posible su desarrollo y puesta en marcha de acuerdo a la normatividad vigente y las alternativas que tenemos por la actual modificación de la normatividad de Transito. Los resultados para la medición del impacto se determinan por medio del factor de la accidentalidad vial que se presenta para ser reducida gracias a la salvación de vidas humanas y así obtener resultados positivos luego de la implementación, caso similar por los resultados obtenidos en el sistema de España.NingunaThe points system implemented in Spain is taken as a reference to be analyzed and turn on in Colombian territory, from this project taken as a reference an state of the art on progress since 2006 after implemented, and analyzing technical and procedural requeriments for possible development and implementation according to existing regulations and normativity, and the alternatives that we have about the current modification of the regulations of Transito requirements. The results for the measurement of impact are determined by the factor of road accidents that presented to be reduced; guaranteed the human lives and get positive results after implementation, the same case by the results earned in the system Spain
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Effect of concentration on shear and extensional rheology of guar gum solutions
The steady shear and extensional rheology of aqueous guar gum solutions was studied for concentrations, C, ranging from 1 g/L to 20 g/L. Extensional rheometry measurements were made using the Cambridge Trimaster filament-stretching device. The steady shear tests indicated a transition between a semi-dilute regime, below 10 g/L, and an entangled regime at higher concentrations. The solutions were shear-thinning and obeyed the unmodified Cox–Merz rule in the dilute regime, but deviated from Cox–Merz and exhibited strongly viscoelastic behaviour at higher concentrations. The surface tension at higher concentration also deviated from the Szyszkowski model, exhibiting behaviour consistent with entanglement. The filament-thinning data did not fit the model for polymer solution behaviour presented by Entov and Hinch (1997), but gave a good fit to a modified form where time was normalised by the time for filament break-up. This scaling was independent of concentration effects, as reported by Chesterton, Meza, Moggridge, Sadd, and Wilson (2011) for cake batters. The modified model parameters approached asymptotic values for entangled solutions. The estimated apparent extensional viscosity exhibited a peak at unit strain followed by a constant value. The former increased as Cn, where n > 1, while the latter increased linearly with C.The authors acknowledge the financial support (POS-A/2012/116) from Xunta de Galicia’s Consellería de Cultura, Educación e Ordenación Universitaria of Spain and European Union’s European Social Fund.This is the accepted manuscript version. The final published version of the article is available from Elsevier at http://www.sciencedirect.com/science/article/pii/S0268005X14000605
HS Hya about to turn off its eclipses
Aims: We aim to perform the first long-term analysis of the system HS Hya.
Methods: We performed an analysis of the long-term evolution of the light
curves of the detached eclipsing system HS Hya. Collecting all available
photometric data since its discovery, the light curves were analyzed with a
special focus on the evolution of system's inclination. Results: We find that
the system undergoes a rapid change of inclination. Since its discovery until
today the system's inclination changed by more than 15 deg. The shape of the
light curve changes, and now the eclipses are almost undetectable. The third
distant component of the system is causing the precession of the close orbit,
and the nodal period is about 631 yr. Conclusions: New precise observations are
desperately needed, preferably this year, because the amplitude of variations
is decreasing rapidly every year. We know only 10 such systems on the whole sky
at present.Comment: 4 pages, 3 figures, published in 2012A&A...542L..23
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Effect of bubble volume fraction on the shear and extensional rheology of bubbly liquids based on guar gum (a Giesekus fluid) as continuous phase
The effect of air bubble volume fraction, ϕ, on the steady shear and extensional rheology of aqueous guar gum solutions was studied at 0 ≤ ϕ ≤ 0.25 and gum concentrations of (i) 5° g/L and (ii) 10 g/L, corresponding to solutions in the (i) semi-dilute and (ii) entanglement regime. The rheological response of the fluids was largely independent of bubble size but strongly dependent on ϕ. The viscous and elastic moduli increased with increasing bubble volume fraction, with elastic dominance prevalent at the higher gum concentration. Extensional rheometry, investigated using filament stretching, revealed that the thinning dynamics of the liquid thread were affected by bubble size, but the filament rupture time was primarily dependent on ϕ. The rheological behaviour in both shear and extension could be modelled as a single mode Giesekus fluid, with a single set of parameters able to describe both the shear and extensional behaviour in the semi-dilute regime. In the entanglement regime the single mode Giesekus fluid could fit the shear data or the extensional data individually, but not both. The fitted Giesekus fluid model parameters exhibited a strong dependency on ϕ, offering a way to predict the flow behaviour of these complex food fluids.This is the author's accepted manuscript. The final version is available from Elsevier in the Journal of Food Engineering (http://www.sciencedirect.com/science/article/pii/S0260877414003744)
Evaluación de las propiedades dinámicas de un pórtico plano (MDOF) en una mesa vibratoria
At present, the study of structural dynamics is mainly theoretical with access to certain simulations through software, however, this project attempts that the student may understand and physically observe the dynamic responses of experimental models. These models correspond to 2D - frames with multiple degrees of freedom that are subjected to acceleration in the base; this acceleration is generated by a Shake Table II, and the results obtained will be compared with theoretical results. These theoretical results were obtained based on modal decomposition and Newmark's method for calculating the dynamic response, considering the linear variation in the acceleration of each floor. The application developed, ATH Dynamic Responses, provided the theoretical responses through a graphical interface friendly for the user. The experimental models are constituted by two materials: stainless steel for frame legs and acrylic sheets for floors; these were tested on a Shake Table II”. The data was acquired using accelerometers that were placed in each floor and in the shake table, and they were corrected both by baseline and with the low pass filter. The results obtained show that the instrumentation with the Shake Table II and the data acquisition with accelerometers provide results similar to the theoretical ones regarding dynamic responses and modal properties.Hoy en día, el estudio de la dinámica estructural es fundamentalmente teórico con acceso a ciertas simulaciones vía \emph{software}, sin embargo, este proyecto intenta que el estudiante pueda entender y observar de manera física las respuestas dinámicas de modelos experimentales. Estos modelos corresponden a pórticos planos de múltiples grados de libertad, que están sometidos a aceleración en la base, la cual es generada por una mesa vibratoria. Los resultados obtenidos se compararán con teóricos. Estos fueron obtenidos basándose en la descomposición modal y en el método de Newmark para el cálculo de la respuesta dinámica, considerando variación lineal en la aceleración de cada piso. La aplicación generada, ATH Dynamic Responses, proporcionó las respuestas teóricas, mediante una interfaz gráfica amigable para el usuario. Los modelos experimentales están constituidos por dos materiales: acero inoxidable (parantes) y láminas de acrílico (pisos), y fueron ensayados sobre una mesa vibratoria. La adquisición de datos se realizó mediante acelerómetros que se colocaron en cada piso y sobre la mesa vibratoria, fueron corregidos, tanto por línea base como con el filtro pasa bajo. Los resultados obtenidos muestran que la instrumentación con una mesa vibratoria y adquisición de datos con acelerómetros proporcionan valores muy similares a los teóricos en cuanto a respuestas dinámicas y propiedades modales
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Teleneurology clinics for polyneuropathy: a pilot study.
INTRODUCTION:Polyneuropathy (PN) is a common condition with significant morbidity. We developed tele-polyneuropathy (tele-PN) clinics to improve access to neurology and increase guideline-concordant PN care. This article describes the mixed-methods evaluation of pilot tele-PN clinics at three community sites within the Greater Los Angeles VA Healthcare System. METHODS:For the first 25 patients (48 scheduled visits), we recorded the duration of the tele-PN visit and exam; the performance on three guideline-concordant care indicators (PN screening labs, opiate reduction, physical therapy for falls); and patient-satisfaction scores. We elicited comments about the tele-PN clinic from patients and the clinical team. We combined descriptive statistics with qualitative themes to determine the feasibility and acceptability of the tele-PN clinics. RESULTS:The average tele-PN encounter and exam times were 28.5 and 9.1 min, respectively. PN screening lab completion increased from 80 to 100%. Opiate freedom improved from 68 to 88%. Physical therapy for patients with recent falls increased from 58 to 100%. The tele-PN clinic was preferred for follow-up over in-person clinics in 86% of cases. Convenience was paramount to the clinic's success, saving an average of 231 min per patient in round-trip travel. The medical team's caring and collaborative spirit received high praise. While the clinic's efficiency was equal or superior to in-person care, the limited treatment options for PN and the small clinical exam space are areas for improvement. CONCLUSION:In this pilot, we were able to efficiently see and examine patients remotely, promote guideline-concordant PN care, and provide a high-satisfaction encounter
Pedagogical-didactic strategies that help boost listening comprehension and production of English
This article is an attempt to establish the effectiveness of the creation of an intended environment for foreign language learning in order to diminish the passive approach of listening and speaking skills of students in communes 1 and 2 of Bucaramanga-Colombia; supporting inclusion from the curriculum, through multichannel stimulation and the implementation of strategies for meaningful learning. The quantitative research design was configured by setting two groups: a control group and an experimental one with students from an institution that assists population in vulnerable situations. In the experiment, a Manova analysis was performed taking into consideration the results of a pre-test and a post-test for listening and speaking skills, establishing correlations with the perception channels characterized for each of the students in both groups. A significant difference was achieved (Traza Pillai p <0.05) for the variable listening skill between the control group and the experimental group, with the last one being higher. There was a tendency to show significant differences in speaking ability (p = 0.062). Effective strategies are the ones that encourage language interaction in context, collaborative learning, comprehensible input, the reduction of students’ anxiety as well as their active and self-directed participation
DISEÑO DE LA PLANTA DE TRATAMIENTO DE AGUA RESIDUALES DEL CENTRO POBLADO TAMBO REAL - DISTRITO DE PITIPO, PROVINCIA DE FERREÑAFE
El presente estudio de tesis se centra básicamente en el diseño hidráulico y
geométrico de la planta de tratamiento de aguas residuales del centro poblado de
Tambo Real del distrito de Pítipo provincia de Ferreñafe departamento de
Lambayeque, teniendo como marco teórico toda la normatividad peruana vigente
para aguas residuales tales como la Norma OS 090 del Reglamente Nacional de
Edificaciones, normatividad del Ministerio de Vivienda Construcción y saneamiento
así como del Ministerio de Salud y Ministerio del Ambiente.
Decimos geométrico, porque el área asignada para la ubicación de la planta de
tratamiento de aguas residuales es muy reducida para implementar una tecnología
de tratamiento de aguas residuales económica, por lo que se tuvo que tener mucho
criterio al momento de hacer la distribución de las estructuras para no alterar su
funcionamiento hidráulico.
Decimos hidráulico, porque se ha efectuado una combinación de estructuras
hidráulicas para el tratamiento de aguas residuales acorde con el terreno asignado, cuya finalidad es cumplir con los parámetros de efluentes establecidos en la
normatividad vigente peruana.
Se ha tratado de recopilar la información certera haciendo uso de encuestas casa
por casa en todo el Centro Poblado de Tambo Real a fin de determinar la población
exacta para poder hacer los estudios y diseños respectivos.Tesis de segunda especialida
Sistema de información para la gestión de hardware y software de las divisiones del departamento administrativo catastro distrital
S/
Utilidad de los scores de Glasgow y score ABIC como predictores de muerte en pacientes adultos con cirrosis hepática alcohólica descompensada
Objetivo: Determinar la utilidad de los scores de Glasgow y score ABIC como predictores de muerte en pacientes adultos con cirrosis hepática descompensada atendidos en el Hospital Regional Docente de Trujillo, 2015-2018 Material y métodos: Se llevó a cabo un estudio retrospectivo seccional de pruebas diagnósticas en el que se incluyeron a 122 fichas de registro de pacientes con cirrosis hepática descompensada, según criterios de selección los cuales se dividieron n 2 grupos: fallecidos y sobrevivientes; calculándose el área bajo la curva para los scores de Glasgow y score ABIC. Resultados: La sensibilidad, especificidad, valor predictivo positivo y valor predictivo negativo del score de Glasgow como predictor de muerte en cirrosis hepática alcohólica descompensada fueron de 72%; 71%; 29% y 93% respectivamente. La exactitud pronóstica del score de Glasgow en la predicción de muerte en pacientes adultos con cirrosis hepática alcohólica descompensada fue de 74%, correspondiendo a un grado de exactitud intermedia. La sensibilidad, especificidad, valor predictivo positivo y valor predictivo negativo del score ABIC como predictor de muerte en cirrosis hepática alcohólica descompensada fueron de 65%; 74%; 28% y 92% respectivamente. La exactitud pronóstica del score ABIC en la predicción de muerte en pacientes adultos con cirrosis hepática alcohólica descompensada fue de 72%, correspondiendo a un grado de exactitud intermedia. Conclusión: Los scores de Glasgow y score ABIC tienen utilidad intermedia como predictores de muerte en pacientes adultos con cirrosis hepática alcohólica descompensada.Objective: To determine the utility of the Glasgow scores and ABIC score as
predictors of death in adult patients with decompensated liver cirrhosis attended at
the Regional Teaching Hospital of Trujillo, 2015-2018
Material and methods: A retrospective study of diagnostic tests was carried out in
which 122 records of patients with decompensated hepatic cirrhosis were included,
according to selection criteria which were divided into 2 groups: deceased and
survivors; calculating the area under the curve for the Glasgow and ABIC scores.
Results: The sensitivity, specificity, positive predictive value and negative
predictive value of the Glasgow score as a predictor of death in decompensated
alcoholic liver cirrhosis were 72%; 71%; 29% and 93% respectively. The prognostic
accuracy of the Glasgow score in the prediction of death in adult patients with
decompensated alcoholic liver cirrhosis was 74%, corresponding to a degree of
intermediate accuracy. The sensitivity, specificity, positive predictive value and
negative predictive value of the ABIC score as a predictor of death in
decompensated alcoholic liver cirrhosis were 65%; 74%; 28% and 92%
respectively. The prognostic accuracy of the ABIC score in the adult death patients
with decompensated alcoholic cirrhosis was 72%, corresponding to a degree of
intermediate accuracy.
Conclusion: Glasgow scores and ABIC score have intermediate utility as
predictors of death in patients with decompensated alcoholic liver cirrhosis.Tesi
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