排序方式： 共有68条查询结果，搜索用时 15 毫秒
41.
Veronica Papa Elena Varotto Massimo Galli Mauro Vaccarezza Francesco M. Galassi 《Anatomical sciences education》2022,15(2):261-280
At the end of 2019, the Covid-19 pandemic spread caused restrictions in business and social spheres. Higher education was also severely affected: universities and medical schools moved online to distance learning and laboratory facilities closed. Questions arise about the long-term effects of this pandemic on anatomical education. In this systematic review, the authors investigated whether or not anatomical educators were able to deliver anatomical knowledge during this pandemic. They also discuss the challenges that anatomical education has faced over the last year. The search strategy was conducted between July 2020 and July 2021. Two hundred and one records were identified, and a total of 79 studies were finally included. How best to deliver anatomy to students remains a moot point. In the last years, the advent of new technologies has raised the question of the possible overcoming of dissection as the main instrument in anatomical education. The Covid-19 pandemic further sharpened the debate. Remote learning enhanced the use of technologies other than cadaveric dissection to teach anatomy. Moreover, from the analyzed records it appears that both from students' perspective as well as teachers' there is a clear tear between those who endorse dissection and those who believe it could be easily overcome or at least integrated by virtual reality and online learning. The authors strongly believe that the best anatomy teaching practice requires the careful adaptation of resources and methods. Nevertheless, they support cadaveric dissection and hope that it will not be replaced entirely as a result of this pandemic. 相似文献
42.
Science & Education - We argue that teleological thinking plays a central role in biology and, more specifically, in theory of natural selection, and, therefore, the didactic goal cannot be its... 相似文献
43.
Venture capital financing and the growth of high-tech start-ups: Disentangling treatment from selection effects 总被引：3，自引：0，他引：3
The financial and innovation literature generally claims that venture capital (VC) investments spur the growth of new technology-based firms (NTBFs). However, it has proved difficult so far to separate the “treatment” effect of the VC investment from the “selection” effect attributable to the ability of the VC investor to screen high growth NTBFs. The aim of this work is to test whether VC investments have a positive treatment effect on the growth of employment and sales of NTBFs. For this purpose we consider a 10-year longitudinal data set for 538 Italian NTBFs, most of which are privately held. The sample includes both VC-backed and non-VC-backed firms. We estimate Gibrat-law-type dynamic panel-data models augmented with time-varying variables that capture the VC status of firms. To control for the endogeneity of VC investments we use several GMM estimators. The econometric results strongly support the view that VC investments positively influence firm growth. The treatment effect of VC investments is of large economic magnitude, especially on growth of employment. Most of it is obtained immediately after the first round of VC finance. Conversely, the selection effect of VC appears to be negligible in the Italian context. 相似文献
44.
Francesca Chiesi Matteo Ciancaleoni Silvia Galli Kinga Morsanyi Caterina Primi 《Learning and individual differences》2012,22(3):390-396
Item Response Theory (IRT) models were applied to investigate the psychometric properties of the Arthur and Day's Advanced Progressive Matrices-Short Form (APM-SF; 1994) [Arthur and Day (1994). Development of a short form for the Raven Advanced Progressive Matrices test. Educational and Psychological Measurement, 54, 395–403] in order to test if the scale is a reliable and valid tool to assess general fluid ability in a short time frame. The APM-SF was administered to 2264 high-school and university students. Once attested the one-factor structure of the scale, unidimensional IRT analyses for dichotomous data were applied to investigate the increases in item difficulty levels, Test Information Function, and Differential Item Functioning across age, gender, and country (comparing Italian and British respondents). Additionally, validity measures were reported. Findings attest that the Arthur and Day's APM-SF is a sound instrument for assessing fluid ability within a short time frame. 相似文献
45.
The purpose of this study is to analyse the cost structure of the Italian local public theatres in order to assess economies
of scale and scope and the desirability of the reform of the subsidy system. A translog multiproduct cost function was estimated
using panel data for a sample of 28 theatres over the period 1991–1993. The results indicate the existence of scale and scope
economies for most output levels. In addition, the estimated marginal costs for the two outputs indicate that, ceteris paribus,
an additional performance conducted inside or outside the theatre by the resident theatre group is generally more expensive
than an additional performance conducted inside the theatre by external theatre groups. These results call for a reform of
the public subsidy system which do not promote the proliferation, but the interchange and the diffusion of a limited number
of high quality shows.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
46.
Doping in sports is commonplace. The prevention of harm to the athlete, the guarantee of fair play, and a level playing field for all competitors are the basis of the current anti-doping strategies. As healthcare systems are forced to allocate increasing resources to prevent and treat the prevailing pathologies worldwide, funding for anti-doping campaigns will necessarily be restricted. Ideally, additional resources should be devoted to increasing the number of athletes tested, the panels of tests used, and the frequency of out-of-competition controls. Since doping prevention cannot be considered a priority for most healthcare systems, such an approach is unaffordable and an alternative framework should be devised, focused primarily on harm reduction rather than fair play. The identification of abnormal deviations from reference values, regardless of pathological or artificial causes, would allow the athlete to be followed and tested using conventional laboratory tests, which are affordable to governments and healthcare systems and available to clinical laboratories. Although this strategy would not detect cheating, it would safeguard athletes' health. 相似文献
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48.
Massimo Muratore Vlastimil Srsen Martin Waterfall Andrew Downes Ronald Pethig 《Biomicrofluidics》2012,6(3)
Myoblasts are muscle derived mesenchymal stem cell progenitors that have great potential for use in regenerative medicine, especially for cardiomyogenesis grafts and intracardiac cell transplantation. To utilise such cells for pre-clinical and clinical applications, and especially for personalized medicine, it is essential to generate a synchronised, homogenous, population of cells that display phenotypic and genotypic homogeneity within a population of cells. We demonstrate that the biomarker-free technique of dielectrophoresis (DEP) can be used to discriminate cells between stages of differentiation in the C2C12 myoblast multipotent mouse model. Terminally differentiated myotubes were separated from C2C12 myoblasts to better than 96% purity, a result validated by flow cytometry and Western blotting. To determine the extent to which cell membrane capacitance, rather than cell size, determined the DEP response of a cell, C2C12 myoblasts were co-cultured with GFP-expressing MRC-5 fibroblasts of comparable size distributions (mean diameter ∼10 μm). A DEP sorting efficiency greater than 98% was achieved for these two cell types, a result concluded to arise from the fibroblasts possessing a larger membrane capacitance than the myoblasts. It is currently assumed that differences in membrane capacitance primarily reflect differences in the extent of folding or surface features of the membrane. However, our finding by Raman spectroscopy that the fibroblast membranes contained a smaller proportion of saturated lipids than those of the myoblasts suggests that the membrane chemistry should also be taken into account. 相似文献
49.
This article analyzes the impact of a computer simulation (business game) on the users’ perceived learning. The theoretical model developed in this paper is derived from collaborative learning and human–computer interaction assumptions. The hypotheses relating to group dynamics and the user–computer interface design with the users’ perceived learning are tested using the business game “FirmReality” on a sample of 173 respondents. Multiple regression and qualitative results show that, in a computer-based simulation context, perceived learning is influenced more by human–computer interaction factors than by group dynamics. Furthermore, results point out a negative effect of interaction with the instructor on individual perceived learning. These results support the possibility to automate the interaction between teacher and students. 相似文献
50.
Massimo Osanna 《文物保护研究》2018,63(5):203-208
ABSTRACTThe extraordinary surviving paintings and floor surfaces at Pompeii are subjected daily to environmental degradation and anthropic pressure. In 2017, the ancient city was visited by 3,400,000 tourists – almost 1,000,000 more than a mere 5?years earlier. This figure looks set to increase, as a result of the revival that the site has undergone in recent years, thanks to generous funding from the European Union and the work of the Great Pompeii Project, which has enabled the reopening of a large number of domestic properties and indeed entire urban quarters which had been closed for decades. However, the increase in site usage necessitates more attention to be paid to conservation. Preventive conservation and planned maintenance, overseen by the Great Pompeii Project, represent the first response. It is conducted by a multi-disciplinary team of archaeologists, architects, conservators and specialists who are present on the site every day, responsible for the management of emergencies, and policy planning through organisation, study, application and evaluation of the consequences. Due to increased tourist numbers, the monitoring team covers every single accessible building, to study the dynamics of visitor flow, and to identify possible interventions to mitigate the effects of anthropic pressure. 相似文献