Search results for "SCA"

Residual a posteriori error estimation for frictional contact with Nitsche method

2023

We consider frictional contact problems in small strain elasticity discretized with finite elements and Nitsche method. Both bilateral and unilateral contact problems are taken into account, as well as both Tresca and Coulomb models for the friction. We derive residual a posteriori error estimates for each friction model, following [Chouly et al, IMA J. Numer. Anal. (38) 2018, pp. 921-954]. For the incomplete variant of Nitsche, we prove an upper bound for the dual norm of the residual, for Tresca and Coulomb friction, without any extra regularity and without a saturation assumption. Numerical experiments allow to assess the accuracy of the estimates and their interest for adaptive meshing …

La riqueza socioemocional: resiliencia y desempeño en la empresa familiar

2023

El estudio de la relación: Riqueza Socioemocional (SEW) - Desempeño de la organización ha crecido significativamente, sin embargo, los hallazgos empíricos presentan diversas controversias, suscitando recientemente el interés de los académicos por identificar constructos mediadores que expliquen los efectos indirectos que SEW puede generar sobre el desempeño. Dada la coyuntura económica mundial y que aún es escaso el conocimiento sobre la forma en que SEW desencadena cambios en los niveles de desempeño de la firma, la presente tesis propone un nuevo mediador en tal relación: la resiliencia. Para ello, se emplea una estrategia sistematizada en tres estudios. El primero centrado en el diseño d…

Conservation of traditional rural biotopes in Finland : a social-ecological approach

2018

This research focuses on conservation of traditional rural biotopes, which are biodiverse meadows and wood-pastures that are dependent on management through grazing or mowing. These low-intensity management actions have become rare as a result of agricultural modernisation. I have utilised a social-ecological approach in order to seek for the most critical factors hindering conservation of traditional rural biotopes in Finland. I also explore practical solutions that have the potential to improve their conservation status. The coverage of traditional rural biotopes has faced severe habitat loss during the last 150 years. This has led to endangerment of several habitat types and species that…

Estudio de la vía visual mediante tomografía de coherencia óptica y resonancia magnética cerebral y medular para la formulación y validación de model…

2020

Estudiar la correlación entre valores de tomografía de coherencia óptica (OCT, Optical Coherence Tomography) peripapilar y macular con volumetrías cerebrales y espinales determinadas a partir de imágenes de resonancia magnética (RM), teniendo en cuenta el tipo de esclerosis múltiple (EM) y el antecedente de neuritis óptica (NO). Formular y validar modelos matemáticos para la predicción de la discromatopsia y de la discapacidad a partir de marcadores clínicos y paraclínicos. MATERIAL Y MÉTODO: Estudio observacional, analítico y transversal de 92 pacientes de la Unidad Mixta de EM y Neurorregeneración del Hospital Universitario y Politécnico La Fe de Valencia. De cada paciente se recogieron l…

Specific serum IgE to Ascaris lunbricoides and onset of respiratory symptoms in Blangladesh immigrants

2007

Study and restoration of a stucco decorative cycle with figures, attributable to the Serpotta family

2014

The article describes the innovative restoration of a decorative figured stucco, attributed to Giacomo Serpotta or to his family, with winged putti and a female figure sitting on a triumphal chariot. The work, in the past at the former Museo Nazionale and today at the Galleria Regionale di Palazzo Abatellis, can be dated between the late seventeenth century and the beginning of eighteenth century and is a testimony of the Baroque in Palermo.

Tree species influences diversity of ground-dwelling insects in afforested fields

2015

Abstract Impaired natural ecosystems, such as agricultural lands, are restored toward original or other target stage. Because the long agricultural history has changed the physical, chemical and biological features of the soil, afforested fields can harbor novel species assemblages and interactions. Our overall aim was to quantify the diversity of ground beetles and ants in early successional afforested fields. In a large scale field experiment, we compared plots that had been afforested 25 years ago by planting monocultures of birch, pine or spruce trees. A total of 4080 carabid individuals representing 41 species, and 131,933 ant individuals representing 15 species were recorded. Both the…

Hypovitaminosis D, oral potentially malignant disorders, and oral squamous cell carcinoma: a systematic review

2021

Oral squamous cell carcinoma (OSCC) and potentially malignant oral disorders (OPMDs) could be associated with low levels of vitamin D. This systematic review aimed to determine the relationship between serum levels of vitamin D with OPMDs and OSCC. This review was conducted according to Cochrane guidelines (PROSPERO CRD42020207382) on literature retrieved from the PubMed, Cochrane, and Web of Science databases. The antecedents extracted were study design, methodology, sample (country, number of patients, age, and sex), oral manifestations (type of lesion, location, prevalence, and follow-up), serum vitamin D levels or use of vitamin D supplements, results, and conclusions. Twelve articles w…

Quality culture boosts agile transformation : Action research in a business‐to‐business software business

2023

Agile methodologies are sometimes adopted, with the assumption that benefits can be attained by only using a set of best practices, which can sometimes work to a degree. In this paper, a case is discussed where a software-producing organization of seven teams achieved significant improvements. The goal of the research was to answer two questions: how an already agile organization could improve its performance further and what is the impact of promoting quality aspects? The questions were answered by implementing interventions based on prior literature and data emerging from semi-structured interviews. The context was an established business with a complex revenue stream structure, meaning t…

Etanercept maintains the clinical benefit achieved by infliximab in patients with rheumatoid arthritis who discontinued infliximab because of side ef…

2007

Objective: To evaluate the efficacy of switching to etanercept treatment in patients with rheumatoid arthritis who already responded to infliximab, but presented side effects. Methods: Charts of 553 patients with rheumatoid arthritis were retrospectively reviewed to select patients who responded to the treatment with infliximab and switched to etanercept because of occurrence of adverse effects. Clinical data were gathered during 24 weeks of etanercept treatment and for the same period of infliximab treatment before infliximab was stopped. Disease Activity Score computed on 44 joints (DAS-44), erythrocyte sedimentation rate (ESR) 1st hour, Visual Analogue Scale (VAS) of pain, Health Assessm…