Succeeding freshman year: rise up connectedness and science learner identity study

This study focuses on at-risk students entering 9th grade in Cambridge, MA and ways to increase their connectedness and science learner identity. At-risk students were invited to participate in a research-based, summer intervention program called Rise Up for four weeks prior to entering 9th grade in the fall. Students were grouped into three categories, at-risk students who participated in the program, Rise Up Participants (RUPs), at-risk students who were Eligible Non-Participants (ENPs), and students who were not considered at-risk based on their 7th grade MCAS scores, Proficients. The study found the RUPs were performing lower on standardized tests compared to the ENPs prior to the intervention. Secondary measures of academic success such as attendance and behavior showed no significant difference. By the end of the first semester freshmen year, the RUPs were statistically the same as the ENPs in terms of grades. RUPs’ attendance and behavior records were found to fall in between the higher-achieving Proficients and the lower-level ENPs. Science grades for RUPs during the first semester were higher than the ENPs but any degree of higher achievement was diminished by the end of the year. RUPs demonstrated consistent to increasing degrees of academic connectedness from the summer through freshmen year. ENPs and Proficients showed decreased academic connectedness from the beginning to the end of freshmen year. One posited explanation for the RUPs steady connectedness scores may be adjusted expectations for freshmen year. This theme emerged from the focus group interviews with RUPs and ENPs in the fall and in the spring. All three groups, RUPs, ENPs, and Proficients, showed a strong correlation between academic connectedness and science learner identity. Similar to attendance and behaviors, RUPs started freshmen year demonstrating science learner identity in between the Proficients and the ENPs. RUPs with higher scores than ENPs diminished throughout the course of freshmen year. Other demographic variables were investigated. Science learner identity in the fall showed no significant difference based on race regardless of participation in the summer intervention. However, by the end of freshmen year, interest in science showed stratification between overrepresented and underrepresented populations. Grades showed a widening divide between Proficients and at-risk groups throughout freshmen. Possible causes and recommendations are discussed

School Improvement by Design: Lessons From a Study of Comprehensive School Reform Programs

This CPRE report is a reprint of a chapter that originally appeared as Chapter 49 of the Handbook of Education Policy Research, edited by Gary Sykes, Barbara Schneider, and DavidN.Plank and published for theAmerican Educational Research Association by Routledge Publishers in 2009. The reprinted chapter presents key findings from A Study of Instructional Improvement, a study that was conducted under the auspices of the Consortium for Policy Research in Education and directed by Brian Rowan, David K. Cohen, and Deborah Loewenberg Ball (all at the University of Michigan).This study examined the design, implementation, and instructional effectiveness of three of America’s most widely disseminated comprehensive school reform programs (the Accelerated Schools Project,America’s Choice, and Successful forAll) over a four year period that encompassed the school years 2000–2001 through 2003–2004. During the course of the study, data were collected in 115 elementary schools in every region of the United States,with more than 5,300 teachers, 800 school leaders, and 7,500 students and their families participating

What Large-Scale, Survey Research Tells Us About Teacher Effects on Student Achievement: Insights From the Prospectus Study of Elementary Schools

This report is about conceptual and methodological issues that arise when educational researchers use data from large-scale, survey research studies to investigate teacher effects on student achievement. In the report, we illustrate these issues by reporting on a series of analyses we conducted using data from Prospects: The Congressionally Mandated Study of Educational Opportunity. This large-scale, survey research effort gathered a rich store of data on instructional processes and student achievement in a large sample of U.S. elementary schools during the early 1990s as part of the federal government\u27s evaluation of the Title I program. We use data from Prospects to estimate the overall size of teacher effects on student achievement and to test some specific hypotheses about why such effects occur. On the basis of these analyses, we draw some substantive conclusions about the magnitude and sources of teacher effects on student achievement and suggest some ways that survey-based research on teaching can be improved

Characterising Radio Emissions in Cosmic Filaments

A growing number of radio studies probe galaxy clusters into the low-power regime in which star formation is the dominant source of radio emission. However, at the time of writing no comparably deep observations have focused exclusively on the radio populations of cosmic filaments. This thesis describes the ATCA 2.1 GHz observations and subsequent analysis of two such regions - labelled Zone 1 (between clusters A3158 and A3125/A3128) and Zone 2 (between A3135 and A3145) - in the Horologium-Reticulum Supercluster (HRS). Source count profiles of both populations are discussed and a radio luminosity function for Zone 1 is generated. While the source counts of Zone 2 appear to be consistent with expected values, Zone 1 exhibits an excess of counts across a wide flux range (1 mJy<S₁.₄<200 mJy). An excess in radio activity at the lower extent of this range (log P₁.₄<22:5; within the SF-dominated regime) is also suggested by the radio luminosity function for that region, and brief colour analysis suggests that such an excess is indeed predominantly associated with a starforming population. The differences between the two filamentary zones is attributed to cosmic variation. The regions are both small (~ 1°²), and are significantly separated in the HRS. Further radio observations of filaments are required and the results combined into a larger sample size in order to arrive at a generalised model filamentary population

ISO observations and models of galaxies with Hidden Broad Line Regions

We present ISO mid-infrared spectrophotometry and far-infrared photometry of galaxies with Hidden Broad Line Regions (HBLR). We also present radiative transfer models of their spectral energy distributions which enable us to separate the contributions from the dusty disc of the AGN and the dusty starbursts. We find that the combination of tapered discs (discs whose thickness increases with distance from the central source in the inner part but stays constant in the outer part) and starbursts provide good fits to the data. The tapered discs dominate in the mid-infrared part of the spectrum and the starbursts in the far-infrared. After correcting the AGN luminosity for anisotropic emission we find that the ratio of the AGN luminosity to the starburst luminosity, L(AGN)/L(SB), ranges from about unity for IRAS14454-4343 to about 13 for IRAS01475-0740. Our results suggest that the warm IRAS colours of HBLR are due to the relatively high L(AGN)/L(SB). Our fits are consistent with the unified model and the idea that the infrared emission of AGN is dominated by a dusty disc in the mid-infrared and starbursts in the far-infrared.Comment: A&A accepeted, 8pages 2 Figures, final versio

Severe synergistic toxicity from docetaxel in a patient treated concurrently with protease inhibitors as part of HIV post-exposure prophylaxis: a case report

<p>Abstract</p> <p>Introduction</p> <p>Docetaxel is a semisynthetic taxane commonly used in solid tumour oncology. Its pharmacokinetics has been widely studied, and it is well established that it is metabolized to pharmacologically inactive products by the cytochrome P450 3A iso-enzymes. However, there have been few reports of the consequences of drug interactions between taxanes and other drugs metabolized by the cytochrome P450 pathway. To the best of our knowledge, this is the first case report of the potentially life-threatening interaction that can occur between docetaxel and the protease inhibitors lopinavir and ritonavir.</p> <p>Case presentation</p> <p>A 30-year-old Caucasian woman presented with symptoms suggestive of severe docetaxel toxicity, that is, prolonged myelosuppression, grade 4 mucositis and desquamating rash, following the commencement of post-exposure prophylaxis for a needlestick injury. She had previously received docetaxel chemotherapy with minimal side effects.</p> <p>Conclusion</p> <p>This case report highlights a probable and novel drug interaction between docetaxel and lopinavir and/or ritonavir, which is largely unreported in the medical literature. Even though these interactions may be more relevant in the field of HIV medicine, knowledge of these interactions is also beneficial to oncologists and dermatologists, as well as those providing acute medical care.</p

Concert recording 2013-04-28

[Track 01]. Trio per uno / Nebojsa Jovan Zivkovic -- [Track 02]. Nancy / Emmanuel Sejourne -- [Track 03]. Cadance 42 / Andy Pape -- [Track 04]. Libertango / Eric Sammut

Preliminary analysis of thermal-infrared multispectral scanner data of the Iron Hill, Colorado carbonatite-alkalic rock complex

The Iron Hill carbonatite-alkalic igneous rock complex is in the Powderhorn mining district, approximately 40 km south-southwest of Gunnison, Colorado. The complex, which occupies about 30 sq km, was emplaced in metasedimentay and metavolcanic rocks during the later Precambrian or early Cambrian. The main rock types in the complex, from oldest to youngest, are fenite, pyroxenite, uncompahgrite, ijolite, nepheline syenite, and dolomitic carbonatite. The carbonatite is limonitic and forms an elliptially shaped 4 sq km stock. Calcitic and dolomitic carbonatite dikes are also numerous throughout the complex and in the pre-existing rocks. Pyroxenite is the most widespread rock type within the complex, but pyroxene is extensively altered to biotite, phlogopite, and vermiculite. Fenite, which formed through Na, K-metasomatism of the country rocks, typically contains more feldspar and less quartz than the equivalent unaltered country rocks. The other alkalic rock types are less widespread and less well exposed. Parts of the complex are covered by Oligocene ash-flow tuff and alluvial, colluvial, and glacial deposits. Sagebrush and grass cover is moderately dense to very dense at low to intermediate elevations; coniferous tree cover is dense at high elevations and on some north-facing slopes at lower elevations. A new algorithm was used to compute spectral emissivity ratios, independent of any emissivity assumptions. This algorithm has the advantage that any of the possible emissivity ratios can be computed and, thus, a large variety of composite ratio images can be constructed, which permits examination of various geologic hypotheses based on the spectral properties of the surface materials

Crafting Stories in the Domestic Archive

The Knitting and Crochet Guild archive, Holmfirth, West Yorkshire hosts a vast array of hand-made items, including clothing, artefacts, yarns and samples, as well as tools, pattern leaflets, booklets and magazines. This article explores how the collection was used as a starting point for engaging students in new experiential encounters with the archive, as both a concept and as a container for material histories of the past. Two theoretical frameworks of investigation provide an intertwining methodology for reading the project: the first operates as a feminist narrative of intervention in the history of textile craft making, and the second considers how the ‘thought-images’ of Walter Benjamin provide a tool for thinking through student responses. It is argued that as a repository of the home-crafts, Lee Mills provides historical materialism with the experiential investigation it needs for a critical pedagogy of the present

ImpZ: a new photometric redshift code for galaxies and quasars

We present a combined galaxy-quasar approach to template-fitting photometric redshift techniques and show the method to be a powerful one. The code (ImpZ) is presented, developed and applied to two spectroscopic redshift catalogues, namely the Isaac Newton Telescope Wide Angle Survey ELAIS N1 and N2 fields and the Chandra Deep Field North. In particular, optical size information is used to improve the redshift determination. The success of the code is shown to be very good with Delta z/(1+z) constrained to within 0.1 for 92 per cent of the galaxies in our sample. The extension of template-fitting to quasars is found to be reasonable with Delta z/(1+z) constrained to within 0.25 for 68 per cent of the quasars in our sample. Various template extensions into the far-UV are also tested.Comment: 21 pages. MNRAS in press. Minor alterations to match MNRAS final proo