Creating Constraints to Community Resiliency: The Event of a Rural School’s Closure

In this study, a community resilience model is utilized to explore the impacts of a rural school’s closure and its implication on community resiliency in the Village of Limerick, Saskatchewan. The findings from four semi-structured interviews and three focus groups indicate that the school’s closure created a number of constraints that have considerable implications for community resilience. In particular, the school’s closure decreased the residents’ sense of community. In addition, as a result of the school’s closure, the community resident’s experienced diminishing civic engagement in the form of volunteerism, community recreation participation, and intergenerational relationships. This paper demonstrates the challenges of a rural school’s closure on cultivating community resiliency, but also the changes to rural residents’ lives and their communities

Étude des systèmes dynamiques à caractéristiques périodiques et des rotors asymétriques

Théorie des systèmes linéaires périodiques -- Systèmes linéaires non autonomes -- Systèms linéaires périodiques -- Méthode de la matrice de transfert -- Évaluation de la matrice de transfert sur une période -- Évaluation de la réponse stationnaire -- Rotors asymétriques -- un modèle simple -- Modèle mathématique -- Équations de mouvement -- Application de la méthode de la matrice de transfert -- Analyse de la stabilité du mouvement par une méthode de pertubation -- Réponse stationnaire par la méthode de balance harmonique -- Rotors asymétriques -- modèle général -- Modèle mathématique -- Cinématique des éléments du rotor -- Équations de mouvement des éléments du rotor -- Système des équations de mouvement -- Programmes informatiques -- Rotor asymétrique -- modèle simple -- Rotor asymétrique -- modèle général

On the stress tensor in Vrancea region

Presented is a new application of Gephart-Forsyth inverse technique for predicting directions and senses of slip. In Vrancea region, the compression axis is thus found to act in a NE-SW direction and not in a SE-NW direction, as is commonly thought from focal mechanism results. In addition, evidence is provided that the stresses in the crust are decoupled from those in the subducted slab.           ARK: https://n2t.net/ark:/88439/y054021 Permalink: https://geophysicsjournal.com/article/101 &nbsp

Development Of Point-Of-Care Devices For Rapid Diagnostics And Preventive Care

With the cost of healthcare in the U.S. predicted to reach 30% of the GDP by 2040, medical technology needs to help reduce the stress on physicians and facilitate personalized preventive care. The two most promising ways of achieving this are through developments in implantable devices for monitoring and treating patients outside of clinical settings and through better point-of-care diagnostics tools. The first part of this dissertation focuses on the development of a potentially implantable autonomous device for the prevention of late-phase hemorrhagic shock (HS), the leading cause of death for people with traumatic injuries. We demonstrate that such a device can continuously monitor vasopressin levels, an indicator of late-phase HS, and release vasopressin automatically when levels drop below a certain threshold in order to help stabilize the situation. We also discuss the possibility of using a nonenzymatic glucose fuel cell unit, instead of a lithium battery, in order to increase the implantable device's lifetime. Novel power sources are important in the development of low-power long-term implantable devices, and we propose several non-enzymatic fuel cells that can be used as coating layers on current implantable devices or as stand-alone power sources. We show that such glucose fuel cell can produce 16[MICRO SIGN]W cm-3 of power and can be integrated in implantable devices such as the one for preventing late-phase HS. In the second part of the dissertation, we discuss the development of a platform for colorimetric biomarker detection on a smartphone. This platform consists of a smartphone accessory that allows uniform and repeatable image acquisition of a colorimetric test strip and an app that analyzes parameters such as hue, saturation and luminosity of the test area, quantifies the biomarker levels and displays the value on the screen. We demonstrate its use in monitoring electrolyte loss, enamel decalcification, cholesterol and vitamin D. We envision this as the first step toward the development of the NutriPhone, a platform for vitamin and micronutrient testing on a smartphone

On the roads of Spain: Andrei Vizanti, the first Romanian student in Madrid (1865-1868)

En el proceso de formación de las élites rumanas modernas, especialmente después de la Unificación de los Principados Rumanos (1859), dos de los jóvenes estudiantes rumanos llegaron a la lejana España. Es el caso de Andrei Vizanti y Ştefan Vârgolici, quienes fueron seleccionados como académicos del estado rumano en el otoño de 1864 para estudiar en la Universidad Central (Madrid, España), por un período de cuatro años. De estos, sólo Andrei Vizanti permaneció en la capital española, mientras que Ştefan Vârgolici, después de una breve parada en Madrid (en 1865), partió para París. Después de tres años de estudio (1865-1868), en junio de 1868, Andrei Vizanti obtuvo el título de Licenciado en La Facultad de Filosofía y Letras de la Universidad Central, sendo el único graduado de una universidad española hasta la segunda mitad del siglo XX

QuerYD: A video dataset with high-quality text and audio narrations

We introduce QuerYD, a new large-scale dataset for retrieval and event localisation in video. A unique feature of our dataset is the availability of two audio tracks for each video: the original audio, and a high-quality spoken description of the visual content. The dataset is based on YouDescribe, a volunteer project that assists visually-impaired people by attaching voiced narrations to existing YouTube videos. This ever-growing collection of videos contains highly detailed, temporally aligned audio and text annotations. The content descriptions are more relevant than dialogue, and more detailed than previous description attempts, which can be observed to contain many superficial or uninformative descriptions. To demonstrate the utility of the QuerYD dataset, we show that it can be used to train and benchmark strong models for retrieval and event localisation. Data, code and models are made publicly available, and we hope that QuerYD inspires further research on video understanding with written and spoken natural language.Comment: 5 pages, 4 figures, accepted at ICASSP 202

Feature emergence via margin maximization: case studies in algebraic tasks

Understanding the internal representations learned by neural networks is a cornerstone challenge in the science of machine learning. While there have been significant recent strides in some cases towards understanding how neural networks implement specific target functions, this paper explores a complementary question -- why do networks arrive at particular computational strategies? Our inquiry focuses on the algebraic learning tasks of modular addition, sparse parities, and finite group operations. Our primary theoretical findings analytically characterize the features learned by stylized neural networks for these algebraic tasks. Notably, our main technique demonstrates how the principle of margin maximization alone can be used to fully specify the features learned by the network. Specifically, we prove that the trained networks utilize Fourier features to perform modular addition and employ features corresponding to irreducible group-theoretic representations to perform compositions in general groups, aligning closely with the empirical observations of Nanda et al. and Chughtai et al. More generally, we hope our techniques can help to foster a deeper understanding of why neural networks adopt specific computational strategies

Tectonic significance of changes in post-subduction Pliocene-Quaternary magmatism in the south east part of the Carpathian-Pannonian Region

The south-eastern part of the Carpathian–Pannonian region records the cessation of convergence between the European platform/Moesia and the Tisza–Dacia microplate. Plio-Quaternary magmatic activity in this area, in close proximity to the ‘Vrancea zone’, shows a shift from normal calc-alkaline to much more diverse compositions (adakite-like calc-alkaline, K-alkalic, mafic Na-alkalic and ultrapotassic), suggesting a significant change in geodynamic processes at approximately 3 Ma. We review the tectonic setting, timing, petrology and geochemistry of the post-collisional volcanism to constrain the role of orogenic building processes such as subduction or collision on melt production and migration. The calc-alkaline volcanism (5.3–3.9 Ma) marks the end of normal subduction-related magmatism along the post-collisional Călimani–Gurghiu–Harghita volcanic chain in front of the European convergent plate margin. At ca. 3 Ma in South Harghita magma compositions changed to adakite-like calc-alkaline and continued until recent times (< 0.03 Ma) interrupted at 1.6–1.2 Ma by generation of Na and K-alkalic magmas, signifying changes in the source and melting mechanism. We attribute the changes in magma composition in front of the Moesian platform to two main geodynamic events: (1) slab-pull and steepening with opening of a tear window (adakite-like calc-alkaline magmas) and (2) renewed contraction associated with deep mantle processes such as slab steepening during post-collisional times (Na and K-alkalic magmas). Contemporaneous post-collisional volcanism at the eastern edge of the Pannonian Basin at 2.6–1.3 Ma was dominated by Na-alkalic and ultrapotassic magmas, suggesting a close relationship with thermal asthenospheric doming and strain partitioning related to the Adriatic indentation. Similar timing, magma chamber processes and volume for K-alkalic (shoshonitic) magmas in the South Apuseni Mountains (1.6 Ma) and South Harghita area at a distance of ca. 200 km imply a regional connection with the inversion tectonics

Automated procedure for determination of friction grip and bearing joint strength used for space missions

This paper presents an algorithm that calculates the nominal torque for friction grip joints, followed by its implementation in a Microsoft Excel worksheet that is automated by a macro written in Visual Basic. The algorithm outputs not only the optimum nominal torque (the value for which the margin of safety is maximum) but also the interval of acceptable values so that the user can easily choose the torque according to his preferences