295 research outputs found
Concrete gravity dams model parameters updating using static measurements
No full textThe structural control of concrete gravity dams is of primary importance. In this context, numerical models play a fundamental role both to assess the vulnerability of gravity dams and to control their behaviour during normal operativity and after extreme events. In this regard, data monitoring represents an important source of information for numerical model calibrations. This study proposes a novel probabilistic procedure, defined in the Bayesian framework, to calibrate the parameters of finite elements models of dams. To this aim, monitoring data and the results of material tests are used as reference information. The computational burden is reduced by using a new hybrid-predictive model of the dam displacements. An application on an Italian dam shows the feasibility of the proposed procedure
The road to faculty-librarian collaboration
No full textIt is critical that citizens of a democratic society have a solid grounding in information literacy Several conceptions and definitions of information literacy have become prevalent. For example, one conception defines information literacy in terms of a set of competencies that an informed citizen of an information society ought to possess to participate intelligently and skills. The author believes that an effective way to achieve this goal is for faculty and librarians to collaborate on ways to teach these skills to students. As proof of the efficacy of faculty-librarian collaboration the author presents an example that is based on his collaborative experiences with faculty
Distinctive neuronal firing patterns in subterritories of the subthalamic nucleus
No full textObjective : Deep brain stimulation of the subthalamic nucleus (STN–DBS) is an established treatment for Parkinson’s disease (PD). Anatomical connectivity analyses and task-related physiological studies have divided the STN into different functional domains: sensorimotor, limbic, and associative – located in its dorsolateral (dSTN), anteroventral (vSTN) and medial territories, respectively. Targeting sensorimotor STN is essential for stimulation efficacy and is supported by intraoperative micro-electrode recordings. A different neuronal signature in microelectrode recordings across STN subterritories was explored in this study. Methods: Stable recordings from 30 PD patients were assigned to dSTN or vSTN by means of an anatomical method (based on fused computed tomography/magnetic resonance images) and through a priori tri-segmented partition of the recording itself. We computed the inter-spike interval (ISI) and ISI-characteristics, mean firing rate (MFR), discharge patterns and mean burst rate (MBR) of each detected single unit activity.
Results: We showed a different MBR between dSTN and vSTN (1.51 ± 0.18 vs. 1.76 ± 0.22 events/minute, Wilcoxon rank sum test, p < 0.05) and a trend in the difference between their MFR (12.78 vs. 15.05 Hz, Wilcoxon rank sum test, p = 0.053) only with the anatomically based method
Täysivaltaisuus kasvatustavoitteena? Nykyaikaisen kasvatustieteen vaarasta kadottaa subjektinsa
No full textIn the first part of the article, the author deals with the question of the extent to which modern educational science has, by way of certain research orientations, changed into an utilitarian instrumentology. There is reason to suspect that an individual student is no longer perceived as a subject; instead, that student is treated as an object as a consequence subordinated to techno-economic interests, for instance.
The second part of the article is an attempt by the author to show, with the writings of Marcuse as the basis, the consequences of the materialistic conception of students and people in general in education systems and educational sciences. The article looks at the concept of single dimensionality in the light of a few examples. Finally, the author analyses Marcuse’s thought on pedagogy applying it to the present day reality.Artikkelin ensimmäinen osa käsittelee kysymystä, missä määrin moderni kasvatustiede on tiettyjen tutkimussuuntaustensa kautta muuttunut utilitaristiseksi instrumenttiopiksi. Voidaan epäillä, että yksittäistä koulutettavaa ei enää nähdä subjektina, vaan häntä käsitellään objektina, kun itsenäisyyttä korostavat kasvatustavoitteet alistetaan yhä enemmän mm. teknistaloudelliselle intressille. Artikkelin toisessa osassa pyritään osoittamaan Marcusen kirjoitusten pohjalta, mihin oppilaan/opiskelijan ja yleensä ihmisen esineellistäminen jo koulutusjärjestelmissä ja kasvatustieteissä voi johtaa. Tässä yhteydessä selvitetään muutamien esimerkkien kautta yksiulotteisuuden käsitettä. Lopuksi analysoidaan Marcusen pedagogista ajattelua ja sovelletaan sitä nykyiseen kasvatustodellisuuteen
ProteinSecondaryStructures.jl: This package parses STRIDE and DSSP secondary structure prediction outputs, to make them convenient to use from Julia, particularly for the analysis of MD simulations.
No full text<p>This package parses STRIDE and DSSP secondary structure prediction outputs, to make them convenient to use from Julia, particularly for the analysis of MD simulations.</p>
Strengthening of an Al-Cu-Mg alloy processed by high-pressure torsion due to clusters, defects and defect-cluster complexes
No full textA physically-based model is established to predict the strength of cluster strengthened ultrafine-grained ternary alloys processed by severe plastic deformation. The model incorporates strengthening due to dislocations, grain refinement, co-clusters (due to short range order and modulus strengthening) and solute segregation. The model is applied to predict strengthening in an Al-Cu-Mg alloy processed by high-pressure torsion (HPT). The microstructure was investigated using transmission electron microscopy (TEM), atom probe tomography (APT), and X-ray diffraction (XRD). Analysis of XRD line profile broadening shows that the dislocation density increases significantly due to severe plastic deformation, which contributes to the increase of strength. APT reveals the presence of nanoscale co-clusters and defect-solute clustering. The concepts of the multiple local interaction energies between solutes and dislocations were used to quantitatively explain the strengthening mechanisms. The model shows a good correspondence with measured microstructure data and measured strength
Hybrid Low Level Petri Nets in Environmental Modeling - Development Platform and Case Studies
No full textIn this contribution, a prototypical development platform is presented, which supports model development of standard and hybrid low level Petri nets with respect to the requirements of environmental modeling. The basic theory of hybrid Petri nets with important extensions for ecological modeling are summarized, and the development platform is briefly described. Two examples are chosen fro detailed study: Petri net as integrating framework for a hybrid crop growth model based on ordinary differential equation systems, and a population/migration model for the Galápagos archipelago
Percepción de discriminación de personas viviendo con VIH atendidas en el Hospital San Juan de Dios en la atención odontológica
No full textA cuatro décadas del comienzo de la pandemia por VIH, se ha instaurado como
un problema de salud pública a nivel mundial y nacional. Actualmente las personas viviendo con
VIH (PVVIH) mediante el tratamiento antirretroviral, han alcanzado esperanza y calidad de vida
similar al resto de la población. Sin embargo, estos avances no se reflejan en la percepción social,
perpetuándose los estereotipos y prejuicios en torno a la enfermedad. Esta situación se extiende
al equipo odontológico generando barreras de acceso o impedimentos para un adecuado
tratamiento y control en el tiempo. El objetivo de este estudio es: Describir las percepciones de
una población de PVVIH usuarias del Hospital San Juan de Dios que se atienden en el servicio
odontológico metropolitano occidente y en centros odontológicos privados
Materiales y métodos: Se realizó un estudio observacional descriptivo transversal, en PVVIH
atendidas en el Servicio de Cirugía Máxilofacial del Hospital San Juan de Dios entre los años
2013 y 2019. Se reclutó a pacientes con datos de contacto actualizados, capacidades cognitivas
compatibles con la realización de una encuesta mediante llamada telefónica. Las preguntas eran
cerradas y de selección múltiple y las variables del estudio son de carácter cualitativo, y se
describieron mediante medidas de frecuencia absoluta y frecuencia relativa.
Resultados: Se encuestó a 90 pacientes en donde el 80% no experimentó situaciones estigma
y/o discriminación por parte del equipo odontológico. Existe un grupo minoritario que ha sido
víctima de estas conductas principalmente por parte del odontólogo/a tratante. Estos factores
influyen en la educación y cumplimiento de controles de las PVVIH. Así es como pudimos
evidenciar una baja asistencia a controles, y en el caso de asistir era por una situación de urgencia
odontológica irreversible.
Conclusiones: Las PVVIH reportan una baja tasa de actos estigmatizantes y/o discriminatorios
en la atención odontológica, aunque en su mayoría no declaran su serodiagnóstico. Existe una
baja asistencia a centros odontológicos, asociado a un desconocimiento sobre las repercusiones
del VIH en la cavidad oral, barreras de acceso, entre otros. Este escenario se debe estudiar,
correlacionando variables para ver su asociación con la ausencia/presencia de actos
discriminatorios contra las PVVIH.Adscrito a Proyecto PRI-ODO 19/005Versión original del auto
Patienten als Innovatoren – Eine modulare Erweiterung einer Patientencommunity zur Ideenschmiede
No full textOnline Communities spielen für Patienten, deren Angehörige und Verwandte eine immer größere Rolle, insbesondere wenn es darum geht, sich über Krankheiten, deren Symptome, Therapien oder Medikamente zu informieren. Zunehmend werden Online Communities von Patienten genutzt, um Ideen, die den Alltag von Patienten erleichtern sollen, auszutauschen. Dies geschieht oftmals ungesteuert und unstrukturiert, weil bestehende Online Communities auf Diskussionen und den Informationsaustausch ausgerichtet sind. In diesem Artikel wird eine modulare Erweiterung von bestehenden Patienten-Communities aufgezeigt, um diese zur systematischen Entwicklung von Ideen zu befähigen. Dahinter steht das Ziel, qualitativ hochwertige Ideen von Patienten für Patienten erzeugen zu können
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