Avaliação da educação superior brasileira: relevância, diversidade, equidade e eficácia dos sistema em tempos de mercantilização Evaluation of Brazilian higher education: relevance, diversity, equity and efficacy of the system in times of mercantilization

Este artigo teve como objetivo avaliar e medir o desenvolvimento da qualidade do sistema de educação superior brasileiro no período 1993-2004. Considerou-se que o período escolhido está associado à intensificação das políticas de mercantilização da educação superior brasileira. A partir de um modelo conceitual de qualidade e de um sistema de indicadores desenvolveu-se a avaliação e medição da qualidade do sistema de educação superior brasileiro. O estudo indicou que, em tempos de mercantilização, a qualidade da educação superior brasileira não se desenvolveu positivamente, visto que no período estudado não foram encontradas evidências claras de melhorias em termos de relevância, eqüidade, diversidade e eficácia.<br>The purpose of this article is to evaluate and measure the development of the quality of the Brazilian higher education system during the period of 1993 to 2004. The chosen period was considered to be associated with the intensification of the mercantilization of Brazilian higher education. The evaluation and measurement of the system’s quality was developed based on a conceptual model of quality and a system of indicators. The study showed that, in times of mercantilization, the quality of Brazilian higher education did not develop positively, since in the period researched no clear evidence was found of improvements in terms of relevance, equity, diversity and efficacy

Os quase-mercados na educação superior: dos improváveis mercados perfeitamente competitivos à imprescindível regulação do Estado The quasi-markets in higher education: from the improbable perfectly competitive markets to the unavoidable State regulation

Nas últimas duas décadas, organismos internacionais multilaterais e governos de diversos países incentivaram reformas na educação superior que geraram, principalmente, a expansão das redes de instituições privadas, a redução dos financiamentos públicos, a cobrança de mensalidades e a competição no provimento de serviços educacionais. Como consequência, observou-se o fenômeno da mercantilização, no qual o desenvolvimento dos fins e dos meios da educação superior, tanto no âmbito estatal como no privado, sofre uma reorientação de acordo com os princípios e a lógica do mercado, e sob o qual a educação, gradativa e progressivamente, perde o status de bem público e assume a condição de serviço comercial. O presente artigo aborda a emergência da lógica e de mecanismos de mercado no contexto da educação superior, tomando por base importantes conceitos econômicos tais como mercado competitivo, livre mercado, intervenção estatal, quase-mercados e falhas de mercado. São descritas e analisadas as ocorrências de imperfeições de competição, ou seja, as falhas de mercado geralmente presentes nos contextos da educação superior: bens públicos, externalidades positivas, poder de monopólio e informações assimétricas. Por fim, conclui-se que a regulação dos Estados nacionais é imprescindível e que, por conseguinte, o estabelecimento de mercados perfeitamente competitivos no âmbito da educação superior é altamente improvável.<br>In the last two decades multilateral international organisms and the governments of several countries have stimulated reforms in higher education that fostered, fundamentally, the expansion of private school systems, the reduction of public financing, the charging of school fees, and the competition in the provision of educational services. As a consequence, it has been observed a phenomenon of commercialization, in which the development of the ends and means of higher education, both in state and in the private realms, is redirected in accordance to the principles and logic of the market, and under which education gradually loses its status as a public good, and acquires the position of a commercial service. The present article focuses on the emergence of the market logic and mechanisms in the context on higher education, based on important economic concepts, such as those of competitive market, free market, state intervention, quasi-markets and market failure. The occurrences of competition imperfections are described and analyzed, namely, the market failures generally present in the context of higher education: public goods, positive externalities, powers of monopoly, and asymmetrical information. The text concludes that the regulation of national States is indispensable and that, consequently, the establishment of perfectly competitive markets within the sphere of higher education is very unlikely

ENIGMA and global neuroscience: A decade of large-scale studies of the brain in health and disease across more than 40 countries

This review summarizes the last decade of work by the ENIGMA (Enhancing NeuroImaging Genetics through Meta Analysis) Consortium, a global alliance of over 1400 scientists across 43 countries, studying the human brain in health and disease. Building on large-scale genetic studies that discovered the first robustly replicated genetic loci associated with brain metrics, ENIGMA has diversified into over 50 working groups (WGs), pooling worldwide data and expertise to answer fundamental questions in neuroscience, psychiatry, neurology, and genetics. Most ENIGMA WGs focus on specific psychiatric and neurological conditions, other WGs study normal variation due to sex and gender differences, or development and aging; still other WGs develop methodological pipelines and tools to facilitate harmonized analyses of “big data” (i.e., genetic and epigenetic data, multimodal MRI, and electroencephalography data). These international efforts have yielded the largest neuroimaging studies to date in schizophrenia, bipolar disorder, major depressive disorder, post-traumatic stress disorder, substance use disorders, obsessive-compulsive disorder, attention-deficit/hyperactivity disorder, autism spectrum disorders, epilepsy, and 22q11.2 deletion syndrome. More recent ENIGMA WGs have formed to study anxiety disorders, suicidal thoughts and behavior, sleep and insomnia, eating disorders, irritability, brain injury, antisocial personality and conduct disorder, and dissociative identity disorder. Here, we summarize the first decade of ENIGMA’s activities and ongoing projects, and describe the successes and challenges encountered along the way. We highlight the advantages of collaborative large-scale coordinated data analyses for testing reproducibility and robustness of findings, offering the opportunity to identify brain systems involved in clinical syndromes across diverse samples and associated genetic, environmental, demographic, cognitive, and psychosocial factors

Search for D∗(2007)0→μ+μ−D^{*}(2007)^0\to\mu^+\mu^- in B−→π−μ+μ−B^-\to\pi^-\mu^+\mu^- decays

International audienceThe very rare $D^{*}(2007)^0\to\mu^+\mu^-$ decay is searched for by analysing $B^-\to\pi^-\mu^+\mu^-$ decays. The analysis uses a sample of beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. The signal signature corresponds to simultaneous peaks in the $\mu^+\mu^-$ and $\pi^-\mu^+\mu^-$ invariant masses. No evidence for an excess of events over background is observed and an upper limit is set on the branching fraction of the decay at ${\cal B}(D^{*}(2007)^0\to\mu^+\mu^-) < 2.6\times 10^{-8}$ at $90\%$ confidence level. This is the first limit on the branching fraction of $D^{*}(2007)^0\to\mu^+\mu^-$ decays and the most stringent limit on $D^{*}(2007)^0$ decays to leptonic final states. The analysis is the first search for a rare charm-meson decay exploiting production via beauty decays

Search for CPCP violation in the phase space of D0→π−π+π0D^0 \to \pi^-\pi^+\pi^0 decays with the energy test

International audienceA search for $CP$ violation in $D^0 \to \pi^-\pi^+\pi^0$ decays is reported, using $pp$ collision data collected by the LHCb experiment from 2015 to 2018 corresponding to an integrated luminosity of 6$fb^{-1}$. An unbinned model-independent approach provides sensitivity to local $CP$ violation within the two-dimensional phase space of the decay. The method is validated using the Cabibbo-favoured channel \D^0 \to \K^-\pi^+\pi^0 and background regions of the signal mode. The results are consistent with $CP$ symmetry in this decay

Observation of Ξb0→Ξc+Ds−\Xi_b^0 \rightarrow \Xi_c^+ D_s^- and Ξb−→Ξc0Ds−\Xi_b^- \rightarrow \Xi_c^0 D_s^- decays

International audienceThe $\Xi_b^0 \rightarrow \Xi_c^+ D_s^-$ and $\Xi_b^- \rightarrow \Xi_c^0 D_s^-$ decays are observed for the first time using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=13\mathrm{TeV}$, corresponding to an integrated luminosity of $5.1\mathrm{fb}^{-1}$. The relative branching fractions times the beauty-baryon production cross-sections are measured to be \begin{align*} \mathcal{R}\left(\frac{\Xi_b^0}{\Lambda_b^0}\right) \equiv \frac{\sigma\left(\Xi_b^0\right)}{\sigma\left(\Lambda_b^0\right)} \times \frac{\mathcal{B}\left(\Xi_b^0 \rightarrow \Xi_c^+ D_s^-\right)}{\mathcal{B}\left(\Lambda_b^0 \rightarrow \Lambda_c^0 D_s^-\right)} =(15.8\pm1.1\pm0.6\pm7.7)\%, \mathcal{R}\left(\frac{\Xi_b^-}{\Lambda_b^0}\right) \equiv \frac{\sigma\left(\Xi_b^-\right)}{\sigma\left(\Lambda_b^0\right)} \times \frac{\mathcal{B}\left(\Xi_b^- \rightarrow \Xi_c^0 D_s^-\right)}{\mathcal{B}\left(\Lambda_b^0 \rightarrow \Lambda_c^0 D_s^-\right)} =(16.9\pm1.3\pm0.9\pm4.3)\%, \end{align*} where the first uncertainties are statistical, the second systematic, and the third due to the uncertainties on the branching fractions of relevant charm-baryon decays. The masses of $\Xi_b^0$ and $\Xi_b^-$ baryons are measured to be $m_{\Xi_b^0}=5791.12\pm0.60\pm0.45\pm0.24\mathrm{MeV}/c^2$ and $m_{\Xi_b^-}=5797.02\pm0.63\pm0.49\pm0.29\mathrm{MeV}/c^2$, where the uncertainties are statistical, systematic, and those due to charm-hadron masses, respectively