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排序方式: 共有402条查询结果,搜索用时 15 毫秒
311.
Dana C. McCoy Jorge Cuartas Jere Behrman Claudia Cappa Jody Heymann Florencia López Bóo Chunling Lu Abbie Raikes Linda Richter Alan Stein Günther Fink 《Child development》2021,92(5):e883-e899
Observational data collected prior to the pandemic (between 2004 and 2019) were used to simulate the potential consequences of early childhood care and education (ECCE) service closures on the estimated 167 million preprimary-age children in 196 countries who lost ECCE access between March 2020 and February 2021. COVID-19-related ECCE disruptions were estimated to result in 19.01 billion person-days of ECCE instruction lost, 10.75 million additional children falling “off track” in their early development, 14.18 million grades of learning lost by adolescence, and a present discounted value of USD 308.02 billion of earnings lost in adulthood. Further burdens associated with ongoing closures were also forecasted. Projected developmental and learning losses were concentrated in low- and lower middle-income countries, likely exacerbating long-standing global inequities. 相似文献
312.
Brad Ceely Anne Maree Davis Natalie Hooke Margaret Kelly Claudia Watson 《Action Learning: Research and Practice》2008,5(1):57-63
The action learning set (ALS) is an often-used tool in practice development to facilitate group reflection. As such, its use evolves in the hands of the participants as they become more comfortable with the process and as trust develops amongst group members. This paper aims to discuss the journey of one ALS over a 2-year period. It seeks to highlight the process of learning through an ALS and the complexity of making the process meaningful for the participants. The role of trust within an ALS cannot be overstated. This was an imperative factor in the overall effectiveness of the set. 相似文献
313.
This paper uses a database on scientific interaction in the field of the economics of technological change and innovation. The database is used to address two issues. First, the network is shown to be (approximately) scale-free. This suggests that growth of the number of scholars active in the field and so-called preferential attachment (i.e., scholars entering the field prefer to attach themselves to highly reputable existing members of the network) are characteristic of the nature of the underlying field. Thus, increasing returns seem to govern mechanisms of reputation formation. Second, the potential existence of cohesive subgroups of relatively strongly connected scholars is explored, and the implications of this for the paradigmatic structure of the field are discussed. 相似文献
314.
Mitchell Claudia Blaeser Marilyn Chilangwa Barbara Maimbolwa-Sinyangwe Irene M. 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1999,45(5-6):417-430
This paper is based on a panel in which the four authors participated at the 10th World Congress of Comparative Education Societies in Cape Town in July 1998. The overall focus of the panel was on how an initiative to promote girl's education in Zambia -- involving governments, NGOs, donor organizations, teachers and girls themselves -- has influenced policy development to the point where the Zambian Ministry of Educaion now has clear directives on girl's education. The authors analyse some of the important factors that contributed to this outcome. 相似文献
315.
An archaeological excavation has been carried out at Pisa (Italy), unearthing an ancient metallurgical workshop. Since archaeological burnt materials provide important records of direction and intensity of the Earth's magnetic field in the past and they can be used to better improve geomagnetic secular variation curves (SVCs), an archaeomagnetic study has been performed. This small copper-alloy furnace presents a circular concave shape covered with a thin layer of mortar, with some traces of heated clay surrounding the feature that confirms the high temperature reached inside it. Archaeological context dating points to the last firing of the furnace between the last quarter of the 13th century and the first quarter of 14th century AD, when then the metallurgical workshop was transformed in a warehouse. Archaeomagnetic sampling has been performed using the modified Thellier method, by collecting several, large and independently oriented aliquots of heated clay, forming the bottom part of the circular wall of the structure. Laboratory treatments have been conducted at the IGG-CNR ARCHEO_LAB (Pisa, Italy) and at St. Maur Palaeomagnetic laboratory (Paris, France). Analytical measurements of the thermo-remanent magnetization index acquired from the samples have been performed using a large cell induction magnetometer for large samples, and the characteristic remanent magnetization (ChRM) has been successfully isolated after an alternate field demagnetization cleaning procedure for each sample. The final mean archaeomagnetic direction has been calculated at sampling site (D = 6.9°; I = 52.8°; N = 9; k = 305; α95 = 2.6°) following the Fisher Statistics, and it exhibits a perfect agreement with some coeval already published directions obtained from Mt. Arso lava flows, these latter being an important anchor point in the preliminary Italian secular variation curve. Comparison with the preliminary Italian SVC, the French SVC and the SCHA.DIF.3K archaeomagnetic regional model have permitted to define an archaeomagnetic absolute age confirming the conventional archaeological age, underlining the importance of this result into the Italian archaeomagnetic data set. 相似文献
316.
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318.
Robinson Frank J. Reeves Philip M. Caines Helen Louise De Grandi Claudia 《Journal of Science Education and Technology》2020,29(2):283-293
Journal of Science Education and Technology - Flipped classrooms provide students the opportunity to collaboratively solve challenging problems in class with help and scaffolding available from... 相似文献
319.
Claudia Soares 《Cultural and Social History》2013,10(3):411-429
AbstractNineteenth-century perceptions of alcoholism were shaped implicitly by notions of gender, class and morality. From 1879, legislation advocated the institutional management of inebriates as a response to the growing problem of habitual drunkenness. Examining the methods of treating varied classes of female alcoholics in three inebriate institutions between 1876 and 1898, this article highlights how reformatory and punitive treatment models were shaped by class and gender perceptions of the alcoholic. The article questions why the application of reformatory treatment models proved problematic and analyzes the points of tension encountered in the attempts to reform a mixed class of female patients. 相似文献
320.