Search results for "9"
showing 10 items of 40453 documents
Microstructural evaluation and recommendations for face masks in community use to reduce the transmission of respiratory infectious diseases
2022
Funding Information: A.K., H.Y. and R.J. also acknowledges the funding through Academy of Finland BESIMAL (Decision No. 334197) and Aalto University, Department of Communications and Networking. This work has also received funding in part from the EPSRC UK (grant number EP/R012091/1). A.K. would also like to thank Mr. Volkan Kaplan for the fruitful discussions in the early concept generation. Publisher Copyright: © 2022 The Author(s) Background and Objective: Recommendations for the use of face masks to prevent and protect against the aerosols (≤5µm) and respiratory droplet particles (≥5µm), which can carry and transmit respiratory infections including severe acute respiratory syndrome coro…
Trobriand-saarilta internetiin : antropologisen kenttätyön haasteita virtuaalisessa ympäristössä
2009
Internet kehitettiin alun perin 1960-luvulla puolustus- ja tiedustelupalvelujen tarpeisiin, mutta 1980-luvulla kehitettyjen visuaalisten käyttöliittymien ansiosta siitä on tullut yhä tärkeämpi osa länsimaisen ihmisen arkipäivää. Vaikutukset sosiaaliseen ja kulttuuriseen kanssakäymiseen ovat olleet mittavia, minkä vuoksi myös sosiaali- ja kulttuuritieteet ovat olleet kiinnostuneita siitä mitä ihmiset tekevät internetissä. Kansainvälisesti virtuaaliantropologista tutkimusta on tehty jo 1990-luvun alusta saakka, mutta Suomessa marginaalisesti vasta 2000-luvulla. Ennakkoluulot virtuaalista kenttätyötä kohtaan saattavat olla tutkimuksen vähäisyyden syynä, minkä vuoksi artikkelissa tuodaan…
Against all odds : Problem-solving as a skill critical to virtual exchange
2021
Virtual Exchange (VE) brings together groups of learners from different geographical locations and cultural backgrounds to engage them in online intercultural collaboration and interaction. Although VE projects are designed and implemented by educators as part of the students’ educational programmes, they often go beyond the setting of traditional courses offered by higher education institutions. Because of their innovative nature, VEs require the students to leave their comfort zone and think outside the box to develop new creative strategies of communication and collaboration in order to find solutions to problems that crop up in this new learning environment. This presentation showcases …
Applying Axial Symmetries to Historical Silk Fabrics: SILKNOW’s Virtual Loom
2020
Symmetry is part of textile art in patterns and motifs that decorate fabrics, which are made by the interlacement of warp and wefts. Moreover, the 3D representation of fabrics have already been studied by some authors
Reversed Pseudoneglect in a Virtual Reality Environment
Damping Provision by Different Virtual Synchronous Machine Schemes
2020
The adoption of virtual synchronous machine (VSM) schemes for the control of power converters is gaining more and more attention both in academia and industry. The VSM control strategies fall into the category of grid-forming converter controls, and they are intended for a range of different applications, providing specific services and different kinds of support to the grid. The paper investigates the possibility of damping provision to the system by VSM power converters. Different schemes are considered and compared, showing the opportunity of the investigated solutions through combined modal and time domain analyses. A specific modification of the power synchronization loop is recognized…
IVyF: Validez de un Instrumento de Medida de las Fortalezas del Carácter de la Clasificación de Peterson y Seligman (2004)
2015
El IVyF (Strength of Character Inventory, en inglés) es un instrumento de medición de las 24 fortalezas del carácter de la clasificación de Peterson y Seligman (2004). A diferencia de otros cuestionarios homólogos para medir las fortalezas de esa clasificación que están compuestos por decenas de ítems, el IVyF es un instrumento de medición de 24 ítems. Este estudio se enfocó en la validez del IVyF. En primer lugar, el IVyF estuvo asociado a medidas de variables conceptualmente relevantes como satisfacción con la vida, los factores de personalidad del modelo de los Cinco Grandes, y deseabilidad social. En segundo lugar, se hallaron asociaciones con tamaños del efecto mayores a mediano entre …
Virtudes escolares percibidas por estudiantes y docentes ecuatorianos: diferencias según sexo, establecimiento y roles
2020
El objetivo del estudio es evaluar la virtuosidad percibida en organizaciones escolares y las diferencias por tipo de centro educativo (fiscal, municipal); sexo (mujer, hombre) y rol (estudiantes, docentes). Se trató de un estudio instrumental basado en el análisis de la estructura factorial y la fiabilidad de un cuestionario para evaluar virtudes percibidas en escuelas (VPOE); y, de un estudio descriptivo transversal que analizó diferencias por sexo, rol y tipo de organizaciones escolares con relación a las virtudes percibidas. Se trabajó con una muestra de 550 estudiantes (49.28 % mujeres) y 105 docentes (47.62% mujeres). El análisis factorial determinó un modelo de cuatro factores que pe…
Pathogenic mechanisms of how human parvovirus breaks self-tolerance
2017
It is known that viral infections can cause acute, chronic, and autoimmune diseases (ADs). However, the mechanism of how a persistent viral infection contributes to ADs remains still unclear. In this thesis, pathological and immunological aspects of how common viruses can initiate autoimmunity were investigated, and human parvovirus B19 (B19V) was employed as a model virus. B19V non-structural protein 1 (NS1), a superfamily 3 (SF3) helicase, initiated DNA damage resulting in cellular apoptosis. The apoptotic bodies (ApoBods) induced by B19V NS1 were purified and characterized. These ApoBods contained viral NS1 proteins with modified autoimmune-associated self-antigens, e.g. DNA, Smith, Apol…
Incidence and dynamics of active cytomegalovirus infection in allogeneic stem cell transplant patients according to single nucleotide polymorphisms i…
2014
Single nucleotide polymorphisms (SNPs) in genes involved in the activation or regulation of innate and adaptive immune responses may modulate the susceptibility to and the natural history of certain chronic viral infections. The current study aimed to investigate whether donor and recipient SNPs in the chemokine receptor 5 (rs1800023), monocyte chemoattractant protein 1 (rs13900), interleukin-10 (rs1878672), and Toll-like receptor 9 (rs352140) genes would exert any influence on the rate of incidence and features of CMV DNAemia in the allogeneic stem cell transplantation setting. This was a retrospective observational multicenter study. The cohort consisted of 102 non-consecutive allogeneic …