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11.
Shuya Wei Xiaoyang Fang Jun Yang Xuejun Cao Valentina Pintus Manfred Schreiner Guoding Song 《Journal of Cultural Heritage》2012,13(4):448-452
Chinese ink stick has a long history and a special importance in the Chinese culture. For the first time, Pyrolysis Gas Chromatography and Mass Spectrometry (Py-GC/MS) was used to identify the materials in an ancient Chinese ink stick. Four types of constituents could be detected in the archaeological ink stick of the Eastern Jin period (317–420 AD): (1) borneol (Chinese name bing piàn); (2) compounds related to essential oil or tar of conifer wood: cedrene, aromadendrane, cedrane, cuparene, cedrol, retene, methyl dehydroabietate and 9-methyl retene; (3) marker compounds from animal glue; (4) polycyclic aromatic hydrocarbons (PAHs) from soot. The information obtained through this study provides conclusive evidence for use of additives of borneol and cedar oil, binding media of animal glue and pine wood soot in the ancient ink stick. 相似文献
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Pasquale Del Vecchio Gioconda Mele Valentina Ndou Giustina Secundo 《Information processing & management》2018,54(5):847-860
This paper aims to demonstrate how the huge amount of Social Big Data available from tourists can nurture the value creation process for a Smart Tourism Destination. Applying a multiple-case study analysis, the paper explores a set of regional tourist experiences related to a Southern European region and destination, to derive patterns and opportunities of value creation generated by Big Data in tourism. Findings present and discuss evidence in terms of improving decision-making, creating marketing strategies with more personalized offerings, transparency and trust in dialogue with customers and stakeholders, and emergence of new business models. Finally, implications are presented for researchers and practitioners interested in the managerial exploitation of Big Data in the context of information-intensive industries and mainly in Tourism. 相似文献
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Barfi Kwaku Anhwere Bervell Brandford Arkorful Valentina 《Education and Information Technologies》2021,26(3):3033-3055
Education and Information Technologies - Social media have become part of students’ life as a result of their features and the predominant mobile smart medium of usage. In the advanced world,... 相似文献
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Pepka Boyadjieva Petya Ilieva-Trichkova Valentina Milenkova Rumiana Stoilova 《International Journal of Lifelong Education》2020,39(1):104-118
ABSTRACT The article’s aim is twofold: to outline the specificity of the embeddedness approach and to explore the embeddedness of graduates’ education-job mismatch and the formation of lifelong learning policies. The study is based on both quantitative and qualitative data, obtained from the Bulgarian Universities Ranking System, and from interviews with experts and young adults engaged in a lifelong learning programme. The analysis uses multilevel modelling. It also relies on mapping lifelong learning policies in Bulgaria through a thematic content analysis. The article argues that the misbalances for highly educated people on the labour market mirror structural problems in the economy and the educational system. The argument is reflected in the historical and structural embeddedness of graduates’ education-job mismatches and the lifelong learning policies applied to overcome this. The results show that the extent of vertical education-job mismatch depends on the different profiles of higher education institutions and professional fields; they also demonstrate different ways in which the embeddedness approach could help shed new light on, and critically assess, lifelong learning policies. The findings reveal a differentiation between national and local levels of lifelong learning policy towards graduates and that regional policies are actively embedded in local contexts. 相似文献
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Valentina Migliarini 《The Educational forum》2020,84(4):309-324
Abstract Inspired by Hip-Hop pedagogy and the Krip-Hop movement, this paper aims to address the limits of inclusive education for disabled migrant students, by drawing on the community event “I am Hip-Hop” that took place in June 2019 in Italy. Through this community intervention, migrant and disabled migrant youth were provided a creative platform to reflect critically about their identity and journey. Ultimately, this paper offers teachers recommendations to anchor disabled migrant culture in educational practices. 相似文献
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Childhood neglect and poverty often co-occur and both have been linked to poor physical health outcomes. In addition, Blacks have higher rates of childhood poverty and tend to have worse health than Whites. This paper examines the unique and interacting effects of childhood neglect, race, and family and neighborhood poverty on adult physical health outcomes. This prospective cohort design study uses a sample (N = 675) of court-substantiated cases of childhood neglect and matched controls followed into adulthood (Mage = 41). Health indicators (C-Reactive Protein [CRP], hypertension, and pulmonary functioning) were assessed through blood collection and measurements by a registered nurse. Data were analyzed using hierarchical linear models to control for clustering of participants in childhood neighborhoods. Main effects showed that growing up Black predicted CRP and hypertension elevations, despite controlling for neglect and childhood family and neighborhood poverty and their interactions. Multivariate results showed that race and childhood adversities interacted to predict adult health outcomes. Childhood family poverty predicted increased risk for hypertension for Blacks, not Whites. In contrast, among Whites, childhood neglect predicted elevated CRP. Childhood neighborhood poverty interacted with childhood family poverty to predict pulmonary functioning in adulthood. Gender differences in health indicators were also observed. The effects of childhood neglect, childhood poverty, and growing up Black in the United States are manifest in physical health outcomes assessed 30 years later. Implications are discussed. 相似文献
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This paper reports on an Australian study that explored the costs and benefits of the National Assessment Programme, Literacy and Numeracy (NAPLAN) testing, both tangible and intangible, of Year 9 students in three Queensland schools. The study commenced with a review of pertinent studies and other related material about standardised testing in Australia, the USA and UK. Information about NAPLAN testing and reporting, and the pedagogical impacts of standardised testing were identified, however little about administrative costs to schools was found. A social constructivist perspective and a multiple case study approach were used to explore the actions of school managers and teachers in three Brisbane secondary schools. The study found that the costs of NAPLAN testing to schools fell into two categories: preparation of students for the testing; and administration of the tests. Whilst many of the costs could not be quantified, they were substantial and varied according to the education sector in which the school operated. The benefits to schools of NAPLAN testing were found to be limited. The findings have implications for governments, curriculum authorities and schools, leading to the conclusion that, from a school perspective, the benefits of NAPLAN testing do not justify the costs. 相似文献
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Denny Wells Jacqueline Alderson Valentina Camomilla Cyril Donnelly Bruce Elliott Andrea Cereatti 《Journal of sports sciences》2019,37(5):515-524
Magnetic and inertial measurement units (MIMUs) may provide an accessible, three-dimensional, in-field alternative to laboratory-restricted marker-based motion capture. Existing upper limb MIMU models have predominantly been validated with low-velocity motion and their suitability for use with sport-based movements remains relatively untested. We propose a MIMU system approach to enable the estimation of anatomically meaningful and participant-specific elbow kinematics with considerations for use with cricket bowling. A novel standardised elbow reference posture of 90 degrees flexion and 0 deg pronation, and functional definition of elbow joint axes of rotation calibrated the MIMU method model before it was validated across three experiments: (1) simple elbow rotations with a mechanical linkage; (2) low-velocity elbow rotations in human participants; and (3) low-medium velocity sport-based movements in human participants. The proposed MIMU method demonstrated high elbow kinematic measurement agreement when compared with a criterion measure across all three conditions. However, during experiment 3, sensor components neared their measurement capacity and the MIMU method elbow flexion measurement variability increased. We conclude that the proposed MIMU method can estimate anatomically referenced, participant-specific joint angles, however, the hardware specifications of currently available systems may limit application in high-velocity/acceleration situations, preventing the measurement of cricket bowling in-field for now. 相似文献
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Anna Emilia Berti Valentina Barbetta Laura Toneatti 《International Journal of Science and Mathematics Education》2017,15(2):215-232
This study examines how third-graders’ conceptions about the origin of species are affected by formal instruction and whether children can learn not only about evolution but also about natural selection. We interviewed the same group of third-grade children (8–9 years old) twice, before and after following a curriculum about these topics. Creationist answers were very rare at both pre- and post-tests. The number of evolutionist answers increased significantly after instruction. However, children learned about evolution in a piecemeal way; they gave evolutionist answers for only some of the animals they were asked about and made several errors when putting classes of vertebrates on a time line. In addition, only a minority of children learned something about evolutionary mechanisms. They said that new-born animals can be different from the parents because of mutations but did not mention differential survival. These results challenge the views, according to which, cognitive biases (i.e. essentialism, teleological and intentional thinking) make children unreceptive to evolution. 相似文献