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Vanessa Moulton Eirini Flouri Heather Joshi Alice Sullivan 《British Journal of Sociology of Education》2017,38(4):500-517
Social class mobility from grandparent to grandchild is a relatively neglected topic. Grandparents today are often healthier and more active, and have longer relationships with their grandchildren than in previous generations. We used data from the UK’s Millennium Cohort Study (n = 8570) to investigate the influence of maternal and paternal grandparents’ social class on the aspirations of children at age seven. Using path analysis and controlling for family income, mother’s and father’s education, lone motherhood, and child’s ethnicity and gender, we found very small direct effects from the paternal grandmother’s social class to the grandchild’s classed aspirations, and small, indirect effects, via parents’ class, of grandparents’ class on child’s classed aspirations. Multi-group analyses found few differences by ethnicity and gender. There was no evidence that, at this age, mixed-class parentage raises the aspirations of working-class children (the ‘sunken middle-class’ hypothesis). 相似文献
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Automated keyphrase extraction is a fundamental textual information processing task concerned with the selection of representative phrases from a document that summarize its content. This work presents a novel unsupervised method for keyphrase extraction, whose main innovation is the use of local word embeddings (in particular GloVe vectors), i.e., embeddings trained from the single document under consideration. We argue that such local representation of words and keyphrases are able to accurately capture their semantics in the context of the document they are part of, and therefore can help in improving keyphrase extraction quality. Empirical results offer evidence that indeed local representations lead to better keyphrase extraction results compared to both embeddings trained on very large third corpora or larger corpora consisting of several documents of the same scientific field and to other state-of-the-art unsupervised keyphrase extraction methods. 相似文献
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Intellectual capital (IC), leading to sustainable competitiveness shapes the patterns of business reality nowadays. IC disclosure has become a critical necessity in this new framework. Being a novel interdisciplinary study, the aim of this paper was to examine IC disclosure by Greek publicly traded firms implementing association and decision rules. Firms were divided into three classes (low, medium and high) according to their IC disclosure, measured by the content analysis methodology. The association rules of each class were specified, highlighting IC reporting profile and focus of the firms belonging to each class. Firms in the high class were shown to have strongly realised the crucial need for a reporting change. Teamwork, corporate culture and extra-firm potential appeared to be underlined. Applying the decision tree methodology, the paper succeeded in proving the remuneration–incentive system, R&D and business collaborations items as the IC reporting-related factors differentiating classes. 相似文献
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Zoe Eirini Papliaka Konstantinos S. Andrikopoulos Evangelia A. Varella 《Journal of Cultural Heritage》2010,11(4):381-391
This study examines the materials of a contemporary pictorial artwork, belonging to the Macedonian Museum of Contemporary Art in Thessaloniki (Greece), and needing conservation. The combined use of micro-FTIR and micro-Raman spectroscopy allowed the identification of almost all painting materials. Moreover, the stability of a series of synthetic pigments towards accelerated ageing is investigated in applications using the contemporary binding medium styrene-acrylic copolymer. The pigments in question are: Hansa yellow PY3 and PY74, quinacridone PV19 and PR122, naphthol AS PR112, phthalocyanine green PG7 and blue PB15, dioxazine PV37, van Dyck brown PBk11, ivory black PBk9, and titanium dioxide PW6. The organic pigments were applied alone or mixed with titanium dioxide, in rutile form or as a mixture of rutile/anatase. The experimental swatches were subjected to ageing tests, and subsequently studied as to colour changes by means of colorimetric measurements, and as to the molecular structure differentiations by infrared spectroscopy in reflectance mode. The ageing tests included exposure to high temperature and humidity (90 °C, 60% RH) and to ultraviolet radiation (350 nm, 30 °C and 50% RH, with a substantial temperature increase at 90 °C for 3 days). The greater colour difference is caused by high temperature and humidity, whereas paint layers containing TiO2, and especially the mixture of the forms rutile/anatase, prove very susceptible to ultraviolet radiation, demonstrating a significant colour difference and extended molecular changes. 相似文献
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Eirini Geraniou 《Educational Studies in Mathematics》2010,73(3):281-296
This paper presents results of a longitudinal study in the transition to independent graduate studies in mathematics. The
analysis of the data collected from 24 students doing a PhD in mathematics revealed the existence of three transitional stages
within the PhD degree, namely Adjustment, Expertise and Articulation. The focus is on the first two transitional stages, since the data collection focused mainly on these. Based on the first
two transitional stages and the students’ ways of dealing with them, which were called ‘survival strategies’, three types
of students were identified. The importance of motivation for each transitional stage and the successful transition overall
are considered as well. 相似文献
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This study aims at highlighting young children’s reasoning about human interventions within a forest ecosystem. Our focus
is particularly set on whether preschoolers are able to come up with any basic ecological interpretations of human actions
upon forest plants or animals and how. Conducting individual, semi-structured interviews with 70 preschoolers (age 4–5), we
first tested their ability to consider the forest as a habitat and recognize simple food chains in it, and then we traced
their reasoning about the consequences that human actions upon plants or certain forest animals may possibly have for other
animals that also live in the forest. The analysis of our qualitative data with “NVivo” software does reveal an ecological aspect in preschoolers’ reasoning, which is thoroughly discussed in the paper. 相似文献
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The scope of the present study was first to evaluate the cross‐cultural reliability and validity of the Social Emotional Questionnaire (SEQ) and second to estimate and compare the prevalence rates of childhood developmental and psychiatric disorders in the general population of young children in the Netherlands and Greece. To this end, the caregivers of 1748 Dutch and 384 Greek 4–12‐year‐old children from the general population completed the SEQ. The number of children displaying symptoms of childhood developmental disorders was estimated by applying the Diagnostic and Statistical Manual of Mental Disorders‐IV criteria of symptom occurrence. Results showed that the reliability and the construct validity of the SEQ were acceptable in both countries and for all the age‐groups of children. Concerning the prevalence, the Greek children were found to display overall significantly more symptoms of developmental disorders than the Dutch children. However, when the number of children suffering from psychiatric symptoms in the clinical range was estimated using the clinical criteria provided by categorical classification systems, no statistical significant differences emerged between the two countries. This finding suggests that when the criterion of clinical impairment is applied in diagnostic procedures, the number of children suffering from severe psychiatric disorders is about equal in the two countries. The implications of the study are discussed. 相似文献
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Efstathios Papachristou Eirini Flouri Heather Joshi Emily Midouhas Glyn Lewis 《Child development》2022,93(2):341-358
Ability-grouping has been studied extensively in relation to children's academic, but not emotional and behavioral outcomes. The sample comprised 7259 U.K. children (50% male) with data on between-class and within-class ability-grouping at age 7. Peer, emotional, hyperactivity, and conduct problems were measured at ages 7, 11, and 14 years. Children in low within-class ability groups showed more hyperactivity and emotional problems across the study period compared to non-grouped children, after adjustments for the different types of ability grouping and confounding. Additionally, children in the middle within-class ability groups showed more, and those in the top within-class groups less, hyperactivity compared to non-grouped children, after adjustment. Children in lower within-class groups should be monitored closely to ensure that their well-being is not compromised. 相似文献
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Based on data from 2,722 British adolescents aged 14–18 years, this study explored whether perceived father involvement can be associated with school attitudes even after controlling for perceived mother involvement. Multiple regression analysis showed that both father involvement and mother involvement contributed significantly and independently to positive school attitudes. Furthermore, the association between father involvement and school attitudes was the same for sons and daughters. We did not find evidence to support the notion that being in a non‐intact family weakens the association between perceived father involvement and school attitudes. Finally, there was no evidence suggesting that the impact of perceived father involvement on school attitudes depends on the level of perceived mother involvement. © 2002, Wiley Periodicals, Inc. 相似文献