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Search Results: 1 - 10 of 13092 matches for " Sandra Kelly "
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Investigating the Suitability of Agile Methods for Requirements Development of Home Care Systems  [PDF]
Sandra Kelly, Frank Keenan
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.39104
Abstract: The ageing population in developed countries brings many benefits but also many challenges, particularly in terms of the development of appropriate technology to support their ability to remain in their own home environment. One particular challenge reported for such Home Care Systems (HCS) is the identification of an appropriate requirements development technique for dealing with the typical diverse stakeholders involved. Agile Methods (AMs) recognize this challenge and propose techniques that could be useful. This paper examines the desirable characteristics identified for requirements development in HCS and investigates the extent to which agile practices conform to these. It also sets out future work to improve the situation for the non compliant points found.
A note on higher order Gauss maps
Sandra Di Rocco,Kelly Jabbusch,Anders Lundman
Mathematics , 2014,
Abstract: We study Gauss maps of order $k$, associated to a projective variety $X$ embedded in projective space via a line bundle $L.$ We show that if $X$ is a smooth, complete complex variety and $L$ is a $k$-jet spanned line bundle on $X$, with $k\geq 1,$ then the Gauss map of order $k$ has finite fibers, unless $X=\mathbb{P}^n$ is embedded by the Veronese embedding of order $k$. In the case where $X$ is a toric variety, we give a combinatorial description of the Gauss maps of order $k$, its image and the generic fibers.
Toric vector bundles and parliaments of polytopes
Sandra Di Rocco,Kelly Jabbusch,Gregory G. Smith
Mathematics , 2014,
Abstract: We introduce a collection of convex polytopes associated to a toric vector bundle on a smooth complete toric variety. We show that the lattice points in the polytopes correspond to generators for the space of global sections and we relate edges to jets. Using the polytopes, we also exhibit bundles that are ample but not globally generated, and bundles that are ample and globally generated but not very ample.
What’s in a Bot? L2 Lexical Development Mediated through ICALL  [PDF]
Kelly Arispe
Open Journal of Modern Linguistics (OJML) , 2014, DOI: 10.4236/ojml.2014.41013
Abstract:

In recent years, the field of Second Language Acquisition (SLA) has made great strides to refocus its attention on the essential role that vocabulary plays in becoming a proficient L2 learner (Nation, 2001). Moreover, Computer Assisted Language Learning (CALL) has made advances in providing interactive online tools that help L2 learners strategically engage and work through their vocabulary development. This present study reports on how an Intelligent CALL tool (ICALL), Langbot, helps learners at the beginner and intermediate levels with their lexical acquisition. Modeled after instant messaging systems, which create a synchronous communicative environment, Langbot acts like a pedagogical scaffold or online buddy that caters to the vocabulary needs of each individual learner. It provides 1) translation requests with examples in context, 2) a frequency-based “word of the day” and 3) quizzes based on recent inquiries and a specific frequency range according to the learner’s level. The results from breadth and depth tests (N = 142), suggest that learners at all levels that have access to Langbot significantly improve their vocabulary breadth, while only intermediate-high learners with access to Langbot improve their vocabulary depth. Furthermore, survey data demonstrate Langbot’s effectiveness and accessibility based on learner perceptions.

Civic-Political Development in the Context of Economic Apartheid in Distressed Communities: A Theoretical Model  [PDF]
Diann Kelly
Advances in Applied Sociology (AASoci) , 2017, DOI: 10.4236/aasoci.2017.712025
Abstract: As class status improves, engagement in civic and political activities increases. These activities are voting, volunteerism and vocal activism. However, depressed socio-economic status leaves many individuals disengaged from civic-political structures. Applying Attachment Theory, this article proposes there are five statuses of civic-political development to being an engaged citizen. These statuses correspond to fixed class categories and are 1) disengaged and detached; 2) insecure, responsive; 3) insecure, subscribing; 4) secure, subscribing; 5) secure and defining. The lower the quintile, the less engaged an individual is in the civic-political structures of society and attached to their community. Organizing communities is one way to engage individuals into the civic-political structures of their community in spite of their economic status.
Oxidación Electroquímica y Ozonización Aplicadas al Tratamiento de Aguas de Lavado de la Producción de Biodiesel
Pati?o,Kelly V; Arroyave,Sandra M; Marín,Juan M;
Información tecnológica , 2012, DOI: 10.4067/S0718-07642012000200006
Abstract: non-photochemical advanced oxidation technologies, ozonation and electrochemical oxidation, as alternative technologies to treat wastewaters from biodiesel production were applied. the physicochemical characterization of the wastewaters showed high levels in biochemical and chemical oxygen demand, total organic carbon and residual methanol. both technologies increased the wastewater biodegradability and showed similar efficiencies in the reduction of the organic loads, with chemical oxygen demand removal between 5 and 9 % and total organic carbon removal between 9 and 11 %. however the ozonation showed to be a more versatile technology to be implemented on a larger scale as a system for treatment alone or coupled to biological processes that are typically used in treating waters with high organic load.
A study of iga antibody response to different mycobacterium tuberculosis antigens in the diagnosis and monitoring of pulmonary tuberculosis
Bezerra, Janaina Miranda;Beck, Sandra Trevisan;Kanunfre, Kelly Aparecida;Leite, Olavo Munhoz;Ferreira, Ant?nio Walter;
Brazilian Journal of Infectious Diseases , 2009, DOI: 10.1590/S1413-86702009000100012
Abstract: we evaluated the performance of the elisa technique in the detection of iga antibodies against different mycobacterium tuberculosis antigenic preparations in serum samples from 49 patients with pulmonary tuberculosis collected before and after the start of specific treatment. the controls consisted of serum samples from healthy patients without any prior contact with the bacteria and serum samples from patients with other pneumopathies. glycolipid antigen gave the best diagnostic performance, with a sensitivity of 88% and specificities varying from 88 to 100% in the control groups. these antigens constitute a powerful tool for the diagnosis and monitoring of patients with pulmonary tuberculosis.
Morpho-quantitative study of NADH-diaphorase positive myenteric neurons of the ileum of rats of Holtzman lineage (Rattus norvegicus) = Estudo morfoquantitativo dos neur nios mioentéricos NADH-diaforase positivos do íleo de ratos (Rattus norvegicus) da linhagem Holtzman
Renata de Britto Mari,S?nia Lucy Molinari,Naianne Kelly Clebis,Sandra Regina Stabille
Acta Scientiarum : Biological Sciences , 2007,
Abstract: The myenteric plexus has a regular characteristic morphological pattern for each segment of the digestive tube and for each species of animal. Considering the lack of data pertaining to the mentioned plexus in rats of Holtzman lineage, the objective of this investigation was to carry out a morpho-quantitative study of the myenteric neurons in the ileum, by means of histological sections and whole-mount muscular preparations treated by the NADH-diaphorasemethod. The profiles of the cell bodies (CB) of the neurons in the mesenteric and antimesenteric regions were counted and measured. The neurons were classified according to the dimensions of the CBs. NADH-dp myenteric neurons were observed grouped together into ganglia in the muscular tunica. The mean neuronal density was 985.8 ± 195.4 neurons/8.96 mm2 in the antimesenteric region and 1267.8 ± 259.92 neurons/8.96 mm2 in the mesenteric region. The incidences of small, medium and large neurons were 14.4, 82 and 3.6% in theantimesenteric region and 14.6, 70.8 and 14.4% in the mesenteric region, respectively. It was concluded that ganglionated arrangements and medium-sized NADH-dp neurons predominated in the myenteric plexus of adult Holtzman rats. The results observed indicated that the NADH-dp myenteric neurons of the ileum of Holtzman rats are similar to those of rats of Wistar lineage with respect to their localization, ganglionated arrangement and the predominance of neurons with medium-sized CBs. O plexo mioentérico possui um padr o morfológico regular característico para cada segmento do tubo digestório e paracada espécie animal. Considerando a escassez de dados pertinentes ao referido plexo em ratos da linhagem Holtzman, o presente estudo como objetivo o estudo morfoquantitativo dos neur nios mioentéricos do íleo, por meio de cortes histológicos e preparados de membrana, tratados pelo método da NADH-diaforase. Foram contados e mensurados os perfis do corpo celular (PC) de neur nios nas regi es mesentérica e antimesentérica. Os neur nios foram classificados segundo as dimens es do PC. Foram observados os neur nios mioentéricos NADH-dp, reunidos em ganglios na túnica muscular. A densidade neuronal média foi de 985,8 ± 195,4 neur nios/8,96 mm2 na regi o antimesentérica e 1267,8 ± 258,92 neur nios/8,96 mm2 na regi o mesentérica. Asincidências de neur nios pequenos, médios e grandes foram 14,4, 82 e 3,6% na regi o antimesentérica, e 14,6, 70,8 e 14,4% na regi o mesentérica, respectivamente. Concluiu-se que, em ratos Holtzman adultos, predominam o arranjo ganglionado no plexo mioentérico eneur nios NADH-dp
Oxidación Electroquímica y Ozonización Aplicadas al Tratamiento de Aguas de Lavado de la Producción de Biodiesel Electrochemical Oxidation and Ozonation Applied to the Treatment of Wastewaters from Biodiesel Production
Kelly V Pati?o,Sandra M Arroyave,Juan M Marín
Información Tecnológica , 2012,
Abstract: Se aplicaron tecnologías avanzadas de oxidación no fotoquímicas, ozonización y oxidación electroquímica, como posibles alternativas para tratar las aguas de lavado de biodiesel. La caracterización fisicoquímica de las aguas mostró altos niveles en demanda química y bioquímica de oxígeno, carbono orgánico total y metanol. Ambas tecnologías aumentaron levemente la biodegradabilidad del agua y mostraron valores de remoción similares, con remociones de demanda química de oxígeno entre 5 y 9 % y de carbono orgánico total entre 9 y 11%. Sin embargo la ozonización presenta características que la hacen más versátil para ser implementada a mayor escala como un sistema de tratamiento solo o acoplado a procesos biológicos, comúnmente usados para el tratamiento de aguas con alta carga orgánica. Non-photochemical advanced oxidation technologies, ozonation and electrochemical oxidation, as alternative technologies to treat wastewaters from biodiesel production were applied. The physicochemical characterization of the wastewaters showed high levels in biochemical and chemical oxygen demand, total organic carbon and residual methanol. Both technologies increased the wastewater biodegradability and showed similar efficiencies in the reduction of the organic loads, with chemical oxygen demand removal between 5 and 9 % and total organic carbon removal between 9 and 11 %. However the ozonation showed to be a more versatile technology to be implemented on a larger scale as a system for treatment alone or coupled to biological processes that are typically used in treating waters with high organic load.
Condición periodontal y pérdida dental en pacientes diabéticos del Hospital Universitario San Vicente de Paúl
Sandra Paola Ochoa,Carlos Andres Ospina,Kelly Johana Colorado,Yenny Paola Montoya
Biomédica , 2011,
Abstract: Introducción: la diabetes es una enfermedad sistémica que afecta el metabolismo de la glucosa y ha sido relacionado con el desarrollo de enfermedad periodontal. Objetivo: el objetivo de este estudio fue determinar la condición periodontal y pérdida dental en un grupo de sujetos diabéticos del Hospital Universitario San Vicente de Paúl. Materiales y Métodos: a 117 sujetos diabéticos tipo 1 y 2 se les realizó un examen periodontal completo, valores de la hemoglobina glicosilada, radiografías periapicales, hábitos de higiene oral e historia de diabetes. Los datos fueron analizados de forma descriptiva y comparativa entre los parámetros clínicos , pérdida dental y tipo de diabetes. Resultados: la prevalencia de gingivitis fue de 27,4% y periodontitis del 72,6%. La complicación sistémica más frecuente fue la hipertensión (51,3%). Los dientes más frecuentemente perdidos fueron los molares y en promedio los sujetos habían perdido 7 dientes. El control de placa bacteriana fue pobre (55,4%). No hubo diferencias en los parámetros clínicos entre pacientes diabéticos tipo 1 y 2. El promedio de profundidad al sondaje fue 2,62 mm siendo los molares los dientes más afectados. El promedio de pérdida de inserción fue 3,03 mm. Los dientes 17, 16, 27, 37 y 47 presentaron los valores más altos de pérdida de inserción. Conclusiones: en conclusión, la condición periodontal en pacientes diabéticos fue pobre, presentando periodontitis en la mayoría de los casos. Esto puede ser una causa importante de pérdida dental en sujetos diabéticos y requiere de especial atención por parte de los odontólogos y médicos.
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