O surgimento das políticas de responsabilidade com consequências graves na formação de professores: Um estudo dos regulamentos propostos pelo Departamento de Educação dos EUA

Using a sociological framework this article explores the emergence and possible consequences of the 2015 U.S. Department of Education’s proposed federal regulatory policy on teacher education programs and alternative route providers. After describing the key features of the policy, we examine the research literature looking for evidence of the merits of accountability policies in improving teacher education and preparation quality and outcomes. Although there is some research evidence that increased accountability measures may indeed contribute to improving the quality and outcomes of teacher education and preparation, the conditions under which this happens are not straightforward. While the stated aim of the regulatory policy, to ultimately advance student learning, finds widespread support in the education community, research evidence points to a number of validity problems with the overall policy. Of particular concern is the policy’s attempts at establishing a direct link between teacher preparation and two of the regulations’ suggested outcomes, namely graduates’ employment and pupil achievement. The policy as conceived could negatively impact program norms and resources and undermine the development of teachers’ human, cultural, and social capital. We discuss the accreditation challenges that the policy is likely to confront and implications for the future of teacher education and preparation accountability.  Usando un marco conceptual sociológico este artículo explora el surgimiento y las posibles consecuencias de las políticas de reglamentación federal propuestas en 2015 por el Departamento de Educación de EE. UU sobre los programas de formación docente y sobre los modelos de formación alternativos. Después de describir las características claves de esas políticas, analizamos la literatura en busca de evidencia de los méritos de las políticas de rendición de cuentas en la mejora de la formación docente, la calidad de la preparación y sus resultados. Aunque existe alguna evidencia de que el aumento de las medidas de responsabilidad puede contribuir a la mejora de la calidad de la preparación docente, las condiciones en que esto sucede no son sencillas. Mientras que el objetivo declarado de la política, la mejora del aprendizaje de los estudiantes, tiene un amplio apoyo entre la comunidad educativa, las evidencias recogidas en esta investigación identifico una serie de problemas respecto a la validez de esta política. Una preocupación importante es acerca de los intentos de establecer un vínculo directo entre formación docente e indicadores de empleo y rendimiento de los alumnos. Tal como está concebida esta política podría impactar negativamente las normas y recursos del programa y socavar el desarrollo de los docentes en términos de recursos humanos, culturales, y de capital social. Discutimos los desafíos de la acreditación que probablemente esta política enfrentara y las implicaciones para el futuro de las políticas de rendición de cuentas en la mejora de la formación docente.Usando uma base conceitual sociológica este artigo explora a ascensão e as possíveis consequências das políticas de regulação federais em 2015 propostas pelo Departamento de Educação dos Estados Unidos para os programas de formação docente e de modelos alternativos de formação. Depois de descrever as principais características dessas políticas, analisamos a literatura  procurando evidências sobre o mérito das políticas de responsabilização na melhora da formação de professores, a qualidade da preparação e os resultados. Embora encontramos algumas evidências de que as medidas de prestação de contas poderiam contribuir para melhorar a qualidade, os resultados da educação e da formação de professores, as condições em que isso acontece não são simples. Embora a meta declarada dessas políticas,  a melhoria dos aprendizagem dos alunos, tem amplo apoio entre a comunidade educativa, as provas recolhidas nesta investigação identificaram uma série de problemas relacionados com a validade desta política. Uma grande preocupação é sobre as tentativas de estabelecer uma ligação direta entre a formação de professores e indicadores de emprego e desempenho dos alunos. Como esta formulada esta política poderia impactar negativamente as regras e os recursos dos programa e prejudicar o desenvolvimento dos professores em termos de recursos humanos, culturais e capital social. Discutimos os desafios de credenciamento que esta política deverá enfrentar e as implicações para o futuro das políticas de responsabilidade na melhora da formação de professores

Who buys into curricular reforms and why? Investigating predictors of reform ratings from teachers in Germany

Prior research suggests that teachers’ positive perceptions of a reform are key when it comes to its successful implementation. The importance of teachers as enactors of change efforts results from their close tie to what is happening in the classroom. This suggests that without persuaded change agents, innovations are unlikely to be implemented coherently, and in turn, likely to fail. In this study, we investigated the relationships between different sets of predictors (specific to the teacher, the school, the reform, or support structures) and teachers’ overall rating of a curricular reform. We found that teachers’ perceived added value and their perceptions of specific reform aspects predicted overall reform ratings. Furthermore, we identified heterogeneity regarding the importance of specific predictors between different school tracks, which calls for increased attention to school context when considering teachers’ perceptions of reforms

Student- and school-level predictors of geography achievement in the United States, 1994–2018

This paper examines national gaps and trends in geography achievement in eighth grade from 1994 to 2018. Statistical models comprising student- and school-level variables were developed to predict achievement using data provided by the National Assessment of Educational Progress (NAEP). Although there were statistically significant relationships between achievement and school-level attributes such as geographic region and school sector, the magnitudes of the coefficients were relatively minor and inconsistent over time compared with student-level characteristics such as gender, race, ethnicity, and parental education. The results inform current policy directions and efforts to foster educational equity in K-12 geography

A line confusion limited millimeter survey of Orion KL (I): sulfur carbon chains

We perform a sensitive (line confusion limited), single-side band spectral survey towards Orion KL with the IRAM 30m telescope, covering the following frequency ranges: 80-115.5 GHz, 130-178 GHz, and 197-281 GHz. We detect more than 14 400 spectral features of which 10 040 have been identified up to date and attributed to 43 different molecules, including 148 isotopologues and lines from vibrationally excited states. In this paper, we focus on the study of OCS, HCS+, H2CS, CS, CCS, C3S, and their isotopologues. In addition, we map the OCS J=18-17 line and complete complementary observations of several OCS lines at selected positions around Orion IRc2 (the position selected for the survey). We report the first detection of OCS v2 = 1 and v3 = 1 vibrationally excited states in space and the first detection of C3S in warm clouds. Most of CCS, and almost all C3S, line emission arises from the hot core indicating an enhancement of their abundances in warm and dense gas. Column densities and isotopic ratios have been calculated using a large velocity gradient (LVG) excitation and radiative transfer code (for the low density gas components) and a local thermal equilibrium (LTE) code (appropriate for the warm and dense hot core component), which takes into account the different cloud components known to exist towards Orion KL, the extended ridge, compact ridge, plateau, and hot core. The vibrational temperature derived from OCS v2 = 1 and v3 = 1 levels is about 210 K, similar to the gas kinetic temperature in the hot core. These OCS high energy levels are probably pumped by absorption of IR dust photons. We derive an upper limit to the OC3S, H2CCS, HNCS, HOCS+, and NCS column densities. Finally, we discuss the D/H abundance ratio and infer the following isotopic abundances: 12C/13C=45+-20, 32S/34S=20+-6, 32S/33S=75+-29, and 16O/18O=250+-135.Comment: Accepted for publication in A&

Atomic diffraction from nanostructured optical potentials

We develop a versatile theoretical approach to the study of cold-atom diffractive scattering from light-field gratings by combining calculations of the optical near-field, generated by evanescent waves close to the surface of periodic nanostructured arrays, together with advanced atom wavepacket propagation on this optical potential.Comment: 8 figures, 10 pages, submitted to Phys. Rev.

Comprehensive preclinical evaluation of human-derived anti-poly-GA antibodies in cellular and animal models of C9ORF72 disease

Hexanucleotide G4C2 repeat expansions in the C9ORF72 gene are the most common genetic cause of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). Dipeptide repeat proteins (DPRs) generated by translation of repeat-containing RNAs show toxic effects in vivo as well as in vitro and are key targets for therapeutic intervention. We generated human antibodies that bind DPRs with high affinity and specificity. Anti-GA antibodies engaged extra- and intracellular poly-GA and reduced aggregate formation in a poly-GA over-expressing human cell line. However, antibody treatment in human neuronal cultures synthesizing exogenous poly-GA resulted in the formation of large extracellular immune complexes and did not affect accumulation of intracellular poly-GA aggregates. Treatment with antibodies was also shown to directly alter the morphological and biochemical properties of poly-GA and to shift poly-GA/antibody complexes to more rapidly sedimenting ones. These alterations were not observed with poly-GP and have important implications for accurate measurement of poly-GA levels including the need to evaluate all centrifugation fractions and disrupt the interaction between treatment antibodies and poly-GA by denaturation. Targeting poly-GA and poly-GP in two mouse models expressing G4C2 repeats by systemic antibody delivery for up to 16 months was well-tolerated and led to measurable brain penetration of antibodies. Long term treatment with anti-GA antibodies produced improvement in an open field movement test in aged C9ORF72450 mice. However, chronic administration of anti-GA antibodies in AAV-(G4C2)149 mice was associated with increased levels of poly-GA detected by immunoassay and did not significantly reduce poly-GA aggregates or alleviate disease progression in this model. Significance Immunotherapy has been proposed for neurodegenerative disorders including Alzheimer’s or Parkinson’s diseases. Recent reports using antibodies against poly-GA or active immunization suggested similar immunotherapy in ALS/FTD caused by repeat expansion in the C9ORF72 gene (1, 2). Here, we systematically characterized human antibodies against multiple DPR species and tested the biological effects of antibodies targeting poly-GA in different cellular and mouse models. Target engagement was shown in three independent cellular models. Anti-GA antibodies reduced the number of intracellular poly-GA aggregates in human T98G cells but not in cultured human neurons. Whereas chronic anti-GA treatment in BAC C9ORF72450 mice did not impact poly-GA levels and modestly improved one behavioral phenotype, poly-GA levels detected by immunoassays were increased and disease progression was unaltered in AAV-(G4C2)149 mice

The DUNE Far Detector Interim Design Report, Volume 3: Dual-Phase Module

The DUNE IDR describes the proposed physics program and technical designs of the DUNE far detector modules in preparation for the full TDR to be published in 2019. It is intended as an intermediate milestone on the path to a full TDR, justifying the technical choices that flow down from the high-level physics goals through requirements at all levels of the Project. These design choices will enable the DUNE experiment to make the ground-breaking discoveries that will help to answer fundamental physics questions. Volume 3 describes the dual-phase module's subsystems, the technical coordination required for its design, construction, installation, and integration, and its organizational structure

The Vegan Society and social movement professionalization, 1944–2017

In a qualitative content analysis of The Vegan Society’s quarterly publication, The Vegan, spanning 73 years and nearly 300 issues, the trajectory of one of the world’s most radical and compassionate counter cuisine collectives is presented and critically assessed. The Vegan Society’s history provides a case study on the ways in which social movements negotiate difference and conflict. Specifically, this article highlights the challenges of identity, professionalization, and factionalism across the 20th and 21st centuries. This research also puts into perspective the cultural impact that veganism has had on Western society, namely the dramatic increase in vegan consumers, vegan products, and the normalcy of vegan nutrition

The US Program in Ground-Based Gravitational Wave Science: Contribution from the LIGO Laboratory

Recent gravitational-wave observations from the LIGO and Virgo observatories have brought a sense of great excitement to scientists and citizens the world over. Since September 2015,10 binary black hole coalescences and one binary neutron star coalescence have been observed. They have provided remarkable, revolutionary insight into the "gravitational Universe" and have greatly extended the field of multi-messenger astronomy. At present, Advanced LIGO can see binary black hole coalescences out to redshift 0.6 and binary neutron star coalescences to redshift 0.05. This probes only a very small fraction of the volume of the observable Universe. However, current technologies can be extended to construct "3rd Generation" (3G) gravitational-wave observatories that would extend our reach to the very edge of the observable Universe. The event rates over such a large volume would be in the hundreds of thousands per year (i.e. tens per hour). Such 3G detectors would have a 10-fold improvement in strain sensitivity over the current generation of instruments, yielding signal-to-noise ratios of 1000 for events like those already seen. Several concepts are being studied for which engineering studies and reliable cost estimates will be developed in the next 5 years