Search results for "cohesion"
showing 10 items of 215 documents
Onset of cohesion in cement paste
2004
It is generally agreed that the cohesion of cement paste occurs through the formation of a network of nanoparticles of a calcium-silicate-hydrate ("C-S-H"). However, the mechanism by which these particles develop this cohesion has not been established. Here we propose a dielectric continuum model which includes all ionic interactions within a dispersion of C-S-H particles. It takes into account all co-ions and counterions explicitly (with pure Coulomb interactions between ions and between ions and the surfaces) and makes no further assumptions concerning their hydration or their interactions with the surface sites. At high surface charge densities, the model shows that the surface charge of…
Does EU cohesion policy work? Theory and evidence
2017
This paper evaluates the effectiveness of European Cohesion Policy in the regions of 12 EU countries in the period 1991–2008, on the basis of a spatial growth model, which allows for the identification of both direct and indirect effects of EU funds on GDP per worker growth. We find that “Objective 1” funds are characterized by strong spatial externalities and a positive and concave effect on the growth of GDP per worker, which reaches a peak at the ratio funds/GDP of approximately 3 percent and becomes non-significant after 4 percent. “Objective 2” and “Cohesion” funds have nonsignificant effects, while all the other funds exert a positive and significant effect, but their size is very lim…
Group cohesion, needs satisfaction, and self-regulated learning: A one-year prospective study of elite youth soccer players' perceptions of their clu…
2018
Abstract Objectives With an overarching aim of investigating the importance of group perceptions on factors believed to underpin the quantity and quality of athletic practice, the purpose of the present study was to examine the relationship between perceptions of group cohesion and elite youth soccer players' basic psychological needs satisfaction and self-regulation over a one-year period. Design Prospective study design involving data collection at two time-points over a one-year period. Method A total of 332 elite youth soccer players selected at Norwegian regional U14 (N = 154) and U 13 (N = 178) levels completed questionnaires measuring perceptions of club-team cohesion, and individual…
STREET WORKOUT: PERFIL PSICOSOCIAL DE SUS PRACTICANTES
2020
La presente investigación estudia las principales características psicológicas de los practicantes de Street Workout, una modalidad deportiva emergente y en auge en los últimos años. A través de un estudio descriptivo-correlacional, con una muestra de 107 practicantes de España, se elaboró un estudio piloto del perfil psicosocial que incluye la evaluación de los motivos de práctica, la satisfacción muscular, la cohesión y el bienestar psicológico; además de una comparación en función de si compiten. Los resultados señalan que es un deporte practicado mayoritariamente por hombres menores de 23 años, cuya principal motivación es hallar un equilibrio entre la preocupación por la salud y su asp…
The `Mafia Feeling': A Transcultural Theme of Sicily
1997
In this article, the Mafia feeling is analysed as an anthropological and cultural theme which through the family establishes personal and individual identity (in the sense of identicalness) which needs set certainties. The presence of a code of certainties suggests the hypothesis that the Mafia feeling is structured on a specific cultural transpersonal level which guarantees the survival, the cohesion and the sense of belonging to the members of a subculture. It is argued that, from the Group-analytic standpoint the Mafia feeling can be considered as a pre-thoughtful and dogmatic thinking which, beginning from a normal degree of dogmatism (adaptive dogmatism), flows through a matrix entire…
Intrinsic adhesive and cohesive assessment of the moisture sensitivity of bio-rejuvenated recycled asphalt binders
2019
Alternative binders not derived from fossil fuels, known as biobinders, are opening new paths for multiple applications in road infrastructure. Biobinders, usually produced from bio-oils obtained from the processing of biomass and industry by-products, are tuneable materials whose properties can be adjusted to meet specific targets. For this reason, an interesting approach is to couple biobinders with Reclaimed Asphalt (RA) by taking advantage of their rejuvenating properties to design bio-asphalt mixtures with high-content RA and no additional virgin bitumen. Recent research has proven the feasibility of this approach through validation at full-scale (BioRePavation project). However certai…
La educación a lo largo de la vida: lógicas sociales y marcos de análisis
2021
El presente artículo ofrece una panorámica aproximativa de la educación a lo largo de la vida desde un punto de vista descriptivo y desde un punto de vista analítico. En una primera parte se presentan algunas lógicas o dimensiones sociales desde la perspectiva de la educación a lo largo de la vida. En una segunda parte se expone un marco de las políticas de educación a lo largo de la vida, distinguiendo entre el ámbito de la educación de personas adultas y su ampliación y desarrollo ulterior en interrelación con la educación a lo largo de la vida. En tercer lugar, se presta atención, en un marco evaluativo, al reciente programa PIAAC, y a los resultados del mismo en el caso de España. Por ú…
Perceived quality of life in partners of patients undergoing treatment in somatic health, mental health, or substance use disorder units: a cross-sec…
2017
Background This study explores (1) differences in socio-demographic, social/familial, and health variables and perceived quality of life (QoL) among partners of patients with somatic illness, mental illness, or substance use disorder (SUD); and (2) identifies factors associated with QoL. Methods Participants (N = 213) in this cross-sectional study were recruited from inpatient or outpatient services in five hospitals in Norway, 2013–2014. QoL was measured by the QoL-5, a generic five-item questionnaire. Differences between groups were examined using Chi-square for categorical variables and Kruskal-Wallis for contiuous variables. Multiple linear regression analyses were used to examine facto…
Cold recycling of reclaimed asphalt pavements
2018
Pavement engineers have in front of them multiple challenges linked to addressing issues related to social development and society’s expanding needs. One of the most substantial of these issues is perhaps how to effectively rehabilitate and/ or maintain the existing road network while preserving and sustaining limited natural resources. The re-usage of existing pavement materials to reconstruct/ rehabilitate our future pavements is the solution that is now more and more selected by the different road administrations around the world. However, upon closer inspection, one can find many areas and details, not negligible issues, that are simply extensions of HMA technology (i.e. mix design proc…
Kif3a interacts with Dynactin subunit p150 Glued to organize centriole subdistal appendages.
2013
Formation of cilia, microtubule-based structures that function in propulsion and sensation, requires Kif3a, a subunit of Kinesin II essential for intraflagellar transport (IFT). We have found that, Kif3a is also required to organize centrioles. In the absence of Kif3a, the subdistal appendages of centrioles are disorganized and lack p150(Glued) and Ninein. Consequently, microtubule anchoring, centriole cohesion and basal foot formation are abrogated by loss of Kif3a. Kif3a localizes to the mother centriole and interacts with the Dynactin subunit p150(Glued) . Depletion of p150(Glued) phenocopies the effects of loss of Kif3a, indicating that Kif3a recruitment of p150(Glued) is critical for s…