Search results for "Spect"
showing 10 items of 28650 documents
Perimenopausal women show modulation of excitatory and inhibitory neuromuscular mechanisms.
2021
Background Menopausal transition exposes women to an early decline in muscle force and motor function. Changes in muscle quality and function, especially in lower limbs, are crucial, as they expose individuals to increased risk of falls. To elucidate some of the related neuromuscular mechanisms, we investigated cortical inhibition and peripheral muscle twitch force potentiation in women during the early and late stages of perimenopause. Methods Participants were 63 women aged 48–55 years categorized as early (EP, n = 25) or late (LP, n = 38) perimenopausal according to serum follicle-stimulating hormone (FSH) levels and menstrual diaries. EP women had an irregular menstrual cycle and FSH 2…
L'interaction lieu - objet comme conceptualisation de l'expérience vécue : test d'un modèle intégrateur
2008
L'expérience vécue par le consommateur fait l'objet de conceptualisations réductrices et normatives en marketing. Cet article défend une conceptualisation plus étoffée de l'expérience vécue fondée sur une interaction lieu-objet et s'appuyant sur le concept de valeur. Une analyse empirique dans le domaine du spectacle vivant est menée en vue de comparer des modélisations concurrentes de l'expérience vécue. Les résultats mettent en avant l'importance du rôle joué par le lieu de consommation comme cadre de l'expérience vécue et confirment son influence indirecte sur la valeur globale perçue. Enfin, ils permettent une validation des différents outils destinés à opérationnaliser ce modèle.
¿Por qué los estudiantes de la Universidad Pedagógica ISFODOSU escogen la carrera de Educación?
2020
As part of research aimed at establishing the profiles of students of new entry at ISFODOSU, we include vocational variables to determine the most important motivations for the choice of career of the participants, as well as for the election of this university and opinion on its technological resources. The sample (No. 744) was chosen at random, proportionally among the Enclosures, Careers and Sex strata. First, we validate the FIT-Choice scale with two confirmatory factorial analyses. The 12 motivational factors showed a good level of fit (RMSEA .062; CFI .92 and TLI .901, as well as the 6 perceptual factors (RMSEA .062; CFI .944 and TLI .924). The reliability of the motivational factors …
Validación y Estandarización de un Sistema de Detección Temprana de Trastorno Espectro Autista como propuesta para ser implementado en el Sistema Nac…
2023
El objetivo de esta tesis es proponer un sistema de detección temprana de TEA (12 a 48 meses) dirigido a población guayaquileña de escasos recursos. Se seleccionaron dos instrumentos (M- CHAT R/F y ADEC), considerando su costo y carga administrativa y propiedades psicométricas. Luego de su adaptación se aplicaron a una muestra de 613 niños (305 F, 308 M/ 12 a 48 m), usando Escala de Bayley III y M-CHAT-R en el nivel 1, el M-CHAT-R/F y ADEC en el nivel 2. Se administró como Gold Standard el ADOS-2, confirmándose el diagnóstico de 23 niños (3.75%). La consistencia interna fue satisfactoria (ADEC α: 0,894; M-CHAT-R/F α: 0,880); la validez de contenido se confirmó mediante el juicio de expertos…
SST Comparison of AVHRR and MODIS Time Series in the Western Mediterranean Sea
2020
La temperatura de la superficie del mar (SST) es un parámetro clave para comprender los procesos atmosféricos y oceánicos. Desde finales de la década de 1980, las imágenes de satélite infrarrojas se han utilizado para complementar los registros in situ para estudiar la variabilidad temporal y espacial de la SST. El radiómetro avanzado de muy alta resolución (AVHRR) del satélite de la Administración Nacional Oceánica y Atmosférica (NOAA) fue el primer sensor utilizado con éxito para calcular la SST después del desarrollo y validación del algoritmo de corrección atmosférica conocido como 'ventana dividida'. Más recientemente, el espectrorradiómetro de imágenes de resolución MODERADA (MODIS) a…
Análisis 3D de la aceleración en crol en el dominio temporal y frecuencial
2012
El Estudio hace un repaso a las metodologías usadas por diferentes autores en lo que respecta al análisis, tanto frecuencia como temporal del nado a crol. El estilo libre (nado en crol) en natación, al igual que el resto de estilos (braza, espalda, mariposa) poseen una determinada coordinación para realizarse correctamente según la reglamentación vigente (FINA, 2011). En este trabajo se pretende indagar en los movimientos que se realizan en el estilo crol, principalmente las aceleraciones y desaceleraciones que se producen durante la fase de nado en el cuerpo del nadador que afectan al rendimiento. Se podría definir el término Aceleración como "toda variación de velocidad con respecto al ti…
An aposematic colour‐polymorphic moth seen through the eyes of conspecifics and predators – Sensitivity and colour discrimination in a tiger moth
2018
Although predation is commonly thought to exert the strongest selective pressure on coloration in aposematic species, sexual selection may also influence coloration. Specifically, polymorphism in aposematic species cannot be explained by natural selection alone. Males of the aposematic wood tiger moth (Arctia plantaginis) are polymorphic for hindwing coloration throughout most of their range. In Scandinavia, they display either white or yellow hindwings. Female hindwing coloration varies continuously from bright orange to red. Redder females and yellow males suffer least from bird predation. White males often have higher mating success than yellow males. Therefore, we ask whether females ca…
The role of lipid metabolism in the acquisition of desiccation tolerance inCraterostigma plantagineum: a comparative approach
2013
Summary Dehydration leads to different physiological and biochemical responses in plants. We analysed the lipid composition and the expression of genes involved in lipid biosynthesis in the desiccation-tolerant plant Craterostigma plantagineum. A comparative approach was carried out with Lindernia brevidens (desiccation tolerant) and two desiccation-sensitive species, Lindernia subracemosa and Arabidopsis thaliana. In C. plantagineum the total lipid content remained constant while the lipid composition underwent major changes during desiccation. The most prominent change was the removal of monogalactosyldiacylglycerol (MGDG) from the thylakoids. Analysis of molecular species composition rev…
Lo sguardo in seconda persona. Verecundia in Seneca, ad Lucilium 11
2021
Where does verecundia stand in the ancient Rome? As Robert Kaster said, it stands close to the pudor, working in face-to-face relations “between respect and shame”. How the verecundia concept took part as a moral feeling is clearly explained in Seneca’s Letter 11 to Lucilius. In this text the philosopher offers a complex, concise portrait of verecundia, allowing to see that it is, to all intents and purposes, a social emotion, as well as an useful behavior to explain the birth of a moral gaze in “second person”.
Value Co-creation for Smart Villages: The Institutionalization of Regional Service Ecosystems
2020
Building a versatile portfolio of public and private digital-enabled services is vital in rural and sparsely populated regions, where traditional market mechanisms alone cannot guarantee the availability of essential services. However, contemporary services tend to build on prevalent institutions, often governed by decisions based on market mechanisms, such as economies of scale – service-by-service and village-by-village. A shift is suggested towards networks of smart villages co-creating value as regional service ecosystems. We draw from institutional theory and employ the Service-dominant logic (SDL) framework in investigating value co-creation in rural villages in Sweden. Analyzing 53 l…