86 research outputs found
Lives on track? Long-term earnings returns to selective school placement in England and Denmark
We explore the influence of between-school ability placement at lower secondary education on earnings across the life course in England and Denmark. We go beyond the mid-career snapshot provided by previous studies by exploiting the availability of four decades worth of earnings data for individuals born in the mid-1950s. Members of this cohort who were judged to be among the most academically able attended grammar schools in England (19 percent) and advanced secondary schools (Realskole) in Denmark (51 percent) prior to the start of comprehensivisation. This key difference makes England and Denmark interesting cases for comparison, not least since pro-selection policies have re-emerged in England based on the claim that grammar schools lead to better educational and labour market outcomes. Our analysis of the influence of selective school placement on earnings finds little support for this contention. We find that those from socioeconomically disadvantaged backgrounds were strikingly under-represented in schools ear-marked for higher ability pupils in both countries, even after taking into account social class differences in measured ability. Our analysis for England finds only modest earnings returns to attending a grammar school, totalling just £39,000 across the life course, while in Denmark the lifetime earnings returns to attending Realskole are somewhat larger (£194,000). Because those from advantaged backgrounds were substantially over-represented at grammar schools and Realskoles, these returns accrue disproportionately to pupils from more advantaged backgrounds. Lower secondary school placement in Denmark accounts for forty percent of the intergenerational reproduction of socioeconomic advantage and disadvantage, more than half of which is due to selection into school types based on socioeconomic background rather than measured ability. Our findings question the wisdom of expanding grammar schools when they appear to do little to improve individuals’ earnings or increase social mobility
Measurement of the Nucleus Charged-Current Double-Differential Cross Section at 2.4 GeV using NOvA
The inclusive electron neutrino charged-current cross section is measured in
the NOvA near detector using protons-on-target (POT) in the
NuMI beam. The sample of GeV electron neutrino interactions is the largest
analyzed to date and is limited by 17\% systematic rather than the
7.4\% statistical uncertainties. The double-differential cross section
in final-state electron energy and angle is presented for the first time,
together with the single-differential dependence on (squared
four-momentum transfer) and energy, in the range 1 GeV 6 GeV.
Detailed comparisons are made to the predictions of the GENIE, GiBUU, NEUT, and
NuWro neutrino event generators. The data do not strongly favor a model over
the others consistently across all three cross sections measured, though some
models have especially good or poor agreement in the single differential cross
section vs.
Search for CP-violating Neutrino Non-Standard Interactions with the NOvA Experiment
This Letter reports a search for charge-parity (CP) symmetry violating
non-standard interactions (NSI) of neutrinos with matter using the NOvA
Experiment, and examines their effects on the determination of the standard
oscillation parameters. Data from
and
oscillation
channels are used to measure the effect of the NSI parameters
and . With 90% C.L. the magnitudes of
the NSI couplings are constrained to be
and . A degeneracy at
is reported, and we observe that the
presence of NSI limits sensitivity to the standard CP phase
Persistência intergeracional de educação no Brasil: o caso da Região Metropolitana do Recife
A partir de uma base em dados primária derivada de pesquisa de campo da Fundação Joaquim Nabuco, este trabalho preenche parte da lacuna na literatura brasileira ao apresentar evidências recentes e inéditas a respeito da mobilidade intergeracional de educação na Região Metropolitana do Recife em 2010, evidências estas que são cotejadas com aquelas para demais Regiões Metropolitanas obtidas para o ano de 1996. Os principais resultados obtidos, que refletem um período de significativas transformações sociais, confirmam o que a literatura que trata da mobilidade intergeracional de educação destaca como importante: a persistência de educação entre pais e filhos no Brasil ainda é muito alta e heterogênea, mesmo em 2010 no caso do Recife, embora apresente redução em relação ao ano de 1996. A probabilidade de um filho cujo pai não tem escolaridade replicar o status educacional do seu pai é de 30%, valor considerado elevado quando tantas oportunidades educacionais estão disponíveis
Gender differences in the association of perceived social support and social network with self-rated health status among older adults: a population-based study in Brazil
BACKGROUND: Older adults are more likely to live alone, because they may have been predeceased by their spouse and friends. Social interaction could also be reduced in this age group due by limited mobility caused by chronic conditions. Therefore, aging is frequently accompanied by reduced social support, which might affect health status. Little is known about the role of gender in the relationship between social support and health in older adults. Hence, the present study tests the hypothesis that gender differences exist in the relationship between perceived social support, social network, and self-rated health (SRH) among older adults. METHODS: A cross-sectional study using two-stage probabilistic sampling recruited 3,649 individuals aged 60 years and above. Data were collected during the national influenza vaccination campaign in Rio de Janeiro, Brazil, in 2006. Individual interviews collected information on SRH, perceived social support, social network, and other covariates. Multivariate logistic regression analyses using nested models were conducted separately for males and females. Independent variables were organised into six blocks: (1) perceived social support and social network, (2) age group, (3) socioeconomic characteristics, (4) health-related behaviours, (5) use of health care services, (6) functional status measures and somatic health problems. RESULTS: Older men who did not participate in group activities were more likely to report poor SRH compared to those who did, (OR = 1.63; 95% CI = 1.16–2.30). Low perceived social support predicted the probability of poor SRH in women (OR = 1.64; 95% CI = 1.16–2.34). Poor SRH was associated with low age, low income, not working, poor functional capacity, and depression in both men and women. More somatic health problems were associated with poor SRH in women. CONCLUSIONS: The association between social interactions and SRH varies between genders. Low social network involvement is associated with poor SRH in older men, whereas low perceived social support is associated with poor SRH in older women. The hypothesis that the relationship of perceived social support and social networks to SRH differs according to gender has been confirmed
Expanding neutrino oscillation parameter measurements in NOvA using a Bayesian approach
NOvA is a long-baseline neutrino oscillation experiment that measures oscillations in charged-current (disappearance) and (appearance) channels, and their antineutrino counterparts, using neutrinos of energies around 2 GeV over a distance of 810 km. In this work we reanalyze the dataset first examined in our previous paper [Phys. Rev. D 106, 032004 (2022)] using an alternative statistical approach based on Bayesian Markov Chain Monte Carlo. We measure oscillation parameters consistent with the previous results. We also extend our inferences to include the first NOvA measurements of the reactor mixing angle and the Jarlskog invariant. We use these results to quantify the strength of our inferences about CP violation, as well as to examine the effects of constraints from short-baseline measurements of using antineutrinos from nuclear reactors when making NOvA measurements of . Our long-baseline measurement of is also shown to be consistent with the reactor measurements, supporting the general applicability and robustness of the PMNS framework for neutrino oscillations
Corporate philanthropy and corporate financial performance: The roles of social response and political access
Corporate philanthropy is expected to positively affect firm financial performance because it helps firms gain sociopolitical legitimacy, which enables them to elicit positive stakeholder responses and to gain political access. The positive philanthropy-performance relationship is stronger for firms with greater public visibility and for those with better past performance, as philanthropy by these firms gains more positive stakeholder responses. Firms that are not government-owned or politically well connected were shown to benefit more from philanthropy, as gaining political resources is more critical for such firms. Empirical analyses using data on Chinese firms listed on stock exchanges from 2001 to 2006 support these arguments
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