1,721,021 research outputs found
On the Intergenerational Transmission of STEM Education among Graduate Students
Full text linkWe provide novel evidence on the existence and extent of the intergenerational transmission of STEM (science, technology, engineering and mathematics) education using a recent large administrative dataset of Italian graduates obtained from the AlmaLaurea survey. We find sizeable intergenerational associations in university graduation from STEM programs and demonstrate that these varies strongly according to both the parent's and the child's gender. The paternal outweighs the maternal intergenerational relationship and is larger for sons than for daughters. While the documented STEM education transmission is not driven by parental liberal profession for most STEM fields, this is the case for some non-STEM fields (economic and legal studies), consistent with the presence of barriers to entry into some professions
Early Childhood Education Attendance and Students' Later Outcomes in Europe
Full text linkThe importance of investments in early childhood education (ECE) has been widely documented in the literature. Among the benefits, particularly for children from disadvantaged backgrounds, is its potential to mitigate educational inequality. However, some evidence also suggests that the positive effects of ECE on later outcomes tend to dissipate over time, leaving children who attended such programmes no better off academically than those who did not. This paper studies the relationship between students' years spent in ECE, from 0 to before starting primary school, and the results of their educational assessment outcomes at age 15. Using PISA survey data for 14 European countries from 2015 to 2018, we conduct a cross-country comparison of student performance in reading, mathematics, and science, correlating the results to the duration of ECE attendance. Our findings show that duration in ECE is associated with better assessments at age 15, but that the benefit is nonlinear and peaks at 3-4 years of attendance. Gender and migration background are associated with student performance on the assessments; but we don't find evidence of heterogeneity in the relationship between ECE duration and test outcomes based on gender and migration background. Instead, we document differential effects of ECE duration according to age of entry to ECE, mother's education, and the type of educational system attended
Preservation of Thrombolytic Activity of Urokinase Modified with Monomethoxypoly(ethylene glycol
No full textA method is described to modify urokinase by covalent binding of monomethoxypoly(ethylene glycol) (mPEG) without impairing its catalytic ac tivity towards high molecular weight substrates. The urokinase active site is protected by an inhibitor, benzamidine, bound to Sepharose during the mPEG modification in order to avoid binding mPEG chains to the active site or to the surrounding area. The mPEG modified urokinase had increased activity towards small molecular weight substrates (acetyl-Gly-methyl ester) as com pared to the unmodified enzyme, while the activity towards the high molecular weight plasminogen and the insoluble substrate fibrin clot was preserved. This did not occur when the enzyme was modified in the absence of active site pro tection. The polymer modification increased the enzyme' thermostability and the stability in plasma in vitro and prolonged in vivo retention after in travenous injection in rats. © 1994, Sage Publications. All rights reserved
The Gender Gaps in Time-Use Within Italian Households During 2002–2014
Full text linkHow are Italian parents sharing family duties when they are both working full-time? We estimate gender gaps in the allocation of time by young Italian couples with children and document their trends over the years 2002–2014, disentangling time use on weekdays and weekend days. We show that the gaps in time devoted to Market work and Household work have narrowed over the years 2002–2014, while the gap in Basic childcare and Leisure remained almost constant. But the negative gap (females-males) in Market work shrunk much more than the positive gap in Household work (46% against 25%) The best-case scenario for gender parity is the one in which partners share similar work responsibilities and are relatively young; however, we show that family duties remain heavily unbalanced across gender in this sample. In 2014, full-time working mothers devote to Total work (paid and unpaid) 11 h per week more and to Leisure 9.7 h per week less than their partners. On the positive side, the gender gap in Quality childcare exhibits a reversed sign, which is driven by fathers’ engagement on weekend days. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40797-022-00211-5
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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