489 research outputs found
Patterns of Failure in Texas Urban Improvement Required Schools: An Equity Audit Expansion
The achievement gap is a concept that has long been explored in education; students of color, low socioeconomic status, those who speak languages other than English, and students labeled as special education perform lower on student achievement tests and often receive less in terms of funding and resources (Harris & Hopson, 2008). Brown (2010) stated, As a result, these students, without realizing it, often fall into a predetermined mold designed for school failure and social inequity (p. 2)
Adaptive learning, endogenous inattention, and changes in monetary policy
This paper develops an adaptive learning formulation of an extension to the Ball, Mankiw, and Reis (2005) sticky information model that incorporates endogenous inattention. We show that, following an exogenous increase in the policymaker’s preferences for price vs. output stability, the learning process can converge to a new equilibrium in which both output and price volatility are lower.Monetary policy ; Information theory
Applying Bayesian model selection to determine ecological covariates for recruitment and natural mortality in stock assessment
Incorporating ecological covariates into fishery stock assessments may improve estimates, but most covariates are estimated with error. Model selection criteria are often used to identify support for covariates, have some limitations and rely on assumptions that are often violated. For a more rigorous evaluation of ecological covariates, we used four popular selection criteria to identify covariates influencing natural mortality or recruitment in a Bayesian stock assessment of Pacific herring (Clupea pallasii) in Prince William Sound, Alaska. Within this framework, covariates were incorporated either as fixed effects or as latent variables (i.e. covariates have associated error). We found most support for pink salmon increasing natural mortality, which was selected by three of four criteria. There was ambiguous support for other fixed effects on natural mortality (walleye pollock and the North Pacific Gyre Oscillation) and recruitment (hatchery-released juvenile pink salmon and a 1989 regime shift). Generally, similar criteria values among covariates suggest no clear evidence for a consistent effect of any covariate. Models with covariates as latent variables were sensitive to prior specification and may provide potentially very different results. We recommend using multiple criteria and exploring different statistical assumptions about covariates for their use in stock assessment.publishedVersio
Charter School Quality and Parental Decision Making With School Choice
Charter schools have become a very popular instrument for reforming public schools, because they expand choices, facilitate local innovation, and provide incentives for the regular public schools while remaining under public control. Despite their conceptual appeal, evaluating their performance has been hindered by the selective nature of their student populations. This paper investigates the quality of charter schools in Texas in terms of mathematics and reading achievement and finds that, after an initial start-up period, average school quality in the charter sector is not significantly different from that in regular public schools. Perhaps most important, the parental decision to exit a charter school is much more sensitive to education quality than the decision to exit a regular public school, consistent with the notion that the introduction of charter schools substantially reduces the transactions costs of switching schools. Low income charter school families are, however, less sensitive to school quality than higher income families.
Database Demolition: Exploding the Scope of Information Literacy and Leading Through Pedagogy
A panel of instructional librarians will demonstrate how to become pedagogical leaders on campus by moving away from traditional database demonstrations and expanding the scope of information literacy topics covered in instruction sessions. The panel will share actionable elements of successful one-shot lesson planning, including detailed learning outcomes, classroom activities, presentation styles, and assessment. Attendees will work in groups to construct their own innovative lesson plans and receive immediate peer feedback
The Probable Detection of SN 1923A: The Oldest Radio Supernova?
Based upon the results of VLA observations, we report the detection of two
unresolved radio sources that are coincident with the reported optical position
of SN 1923A in M83. For the source closest to the SN position, the flux density
was determined to be 0.30 +/- 0.05 mJy at 20 cm and 0.093 +/- 0.028 mJy at 6
cm. The flux density of the second nearby source was determined to be 0.29 +/-
0.05 at 20 cm and 0.13 +/- 0.028 at 6 cm. Both sources are non-thermal with
spectral indices of alpha = -1.0 +/- 0.30 and -0.69 +/- 0.24, respectively. SN
1923A has been designated as a Type II-P. No Type II-P (other than SN 1987A)
has been detected previously in the radio. The radio emission from both sources
appears to be fading with time. At an age of approximately 68 years when we
observed it, this would be the oldest radio supernova (of known age) yet
detected
The Nature of SN 1961V
The nature of SN 1961V has been uncertain. Its peculiar optical light curve
and slow expansion velocity are similar to those of super-outbursts of luminous
blue variables (LBVs), but its nonthermal radio spectral index and declining
radio luminosity are consistent with decades-old supernovae (SNe). We have
obtained Hubble Space Telescope STIS images and spectra of the stars in the
vicinity of SN 1961V, and find Object 7 identified by Filippenko et al. to be
the closest to the optical and radio positions of SN 1961V. Object 7 is the
only point source detected in our STIS spectra and only its H-alpha emission is
detected; it cannot be the SN or its remnant because of the absence of
forbidden lines. While the H-alpha line profile of Object 7 is remarkably
similar to that of eta Car, the blue color (similar to an A2Ib supergiant) and
lack of appreciable variability are unlike known post-outburst LBVs. We have
also obtained Very Long Baseline Array (VLBA) observations of SN 1961V at 18
cm. The non-detection of SN 1961V places a lower limit on the size of the
radio-emitting region, 7.6 mas or 0.34 pc, which implies an average expansion
velocity in excess of 4,400 km/s, much higher than the optical expansion
velocity measured in 1961. We conclude the following: (1) A SN occurred in the
vicinity of SN 1961V a few decades ago. (2) If the SN 1961V light maximum
originates from a giant eruption of a massive star, Object 7 is the most
probable candidate for the survivor, but its blue color and lack of significant
variability are different from a post-outburst eta Car. (3) The radio SN and
Object 7 could be physically associated with each other through a binary
system. (4) Object 7 needs to be monitored to determine its nature and
relationship to SN 1961V.Comment: 16 pages, 3 figures, accepted by the Astronomical Journal for the
2004 May issu
Governança de dados na gestão organizacional das instituições de ensino superior: uma análise bibliométrica
Organizations consider data as essential assets for their operation; data represents the people, processes and technology that make it up. In other words, data is a necessary input for the business, its organizational management and competitive advantage, which must be aligned with its governance. In this work, a bibliometric analysis is carried out on the relationship that Data Governance has in the Organizational Management of Colombian Higher Education Institutions, since it is essential that researchers interested in this topic have a global vision of the state of the studies carried out in the global context. For the analysis, the review of 407 documents from the Scopus database was taken into account with an observation window of the last 10 years, between 2012 and 2022, using the keywords such as organizational management, data, data governance and its variations.Las organizaciones consideran los datos como activos fundamentales para su funcionamiento; los datos representan a las personas, los procesos y la tecnología que la conforman. Es decir, los datos son un insumo necesario para el negocio, su gestión organizacional y ventaja competitiva, lo que debe estar alineado con la gobernanza de estos. En este trabajo se realiza un análisis bibliométrico sobre la relación existente entre la gobernanza de datos en la gestión organizacional de las Instituciones de Educación Superior (IES), toda vez que es indispensable que los investigadores interesados en este tema tengan una visión global sobre el estado de los estudios realizados en el contexto mundial. Para el análisis se tuvo en cuenta la revisión de 407 documentos de la base de datos Scopus con una ventana de observación de los últimos diez años, entre 2012 y 2022, haciendo uso de las palabras clave como gestión organizacional, dato, gobernanza de datos y sus variaciones.Les données sont considérées comme des actifs fondamentaux pour le fonctionnement des organisations; les données représentent les personnes, les processus et les technologies qui composent l'organisation. En d'autres termes, ils constituent un apport nécessaire à l'entreprise, à sa gestion organisationnelle et à son avantage concurrentiel, qui doivent être alignés sur leur gouvernance. Dans cet article, une analyse bibliométrique de la relation existante entre la gouvernance des données et la gestion organisationnelle dans les établissements d'enseignement supérieur (EES) est réalisée, car il est essentiel pour les chercheurs intéressés par ce sujet d'avoir une vision globale de l'état des études réalisées dans le contexte mondial. L'analyse a pris en compte l'examen de 407 documents de la base de données Scopus avec une fenêtre d'observation des dix dernières années, entre 2012 et 2022, en faisant usage de mots-clés tels que gestion organisationnelle, données, gouvernance des données et ses variations.Os dados são considerados bens fundamentais para o funcionamento das organizações; os dados representam as pessoas, os processos e a tecnologia que compõem a organização. Por outras palavras, são um input necessário para a empresa, a sua gestão organizacional e vantagem competitiva, que deve ser alinhada com a sua governançã. Neste artigo é feita uma análise bibliométrica da relação existente entre a governação de dados e a gestão organizacional nas Instituições de Ensino Superior (IES), pois é essencial que os investigadores interessados neste tópico tenham uma visão global do estado dos estudos realizados no contexto global. A análise teve em conta a revisão de 407 documentos da base de dados Scopus com uma janela de observação dos últimos dez anos, entre 2012 e 2022, fazendo uso de palavras-chave tais como gestão organizacional, dados, governançã de dados e as suas variações
Teaching and learning analytics applied to programming courses
La enseñanza de la programación requiere del desarrollo de habilidades cognitivas de
alto orden, lo que exige un gran esfuerzo por parte de estudiantes y profesores. Las altas tasas de
fracaso académico indican que es necesario tomar medidas para revertir esta situación. La analítica
de la enseñanza y el aprendizaje proporciona métodos, procesos y técnicas que permiten mejorar la
calidad del proceso educativo. La investigación presenta una revisión sistemática de estudios en los
que se aplican técnicas, métodos o procesos de análisis de la enseñanza y el aprendizaje en cursos
de programación inicial en el contexto de la educación superior. El objetivo principal es identificar
las principales perspectivas y tendencias en la analítica de enseñanza y aprendizaje aplicada a la
programación y posibles temas de investigaciónTeaching programming requires the development of high-order cognitive skills, which
demands a great effort from students and teachers. The high rates of academic failure indicate that
it is necessary to take action to reverse this situation. Teaching and Learning Analytics provide
methods, processes, and techniques that allow improve the quality of education process. The
research presents a systematic review of studies in which techniques, methods or processes of
teaching and learning analysis are applied in initial programming courses in the context of higher
education. The main purpose is to identify the main perspectives and trends in teaching and learning
analytics applied to programming and potential research topic
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