1,680 research outputs found
Public Participation, Teacher Accountability, and School Outcomes:Findings from Baseline Surveys in Three Indian States
This paper presents findings from baseline surveys on student learning achievement, teacher effort and community participation in three Indian states, Karnataka, Madhya Pradesh and Uttar Pradesh. Results indicate low teacher attendance and poor student learning. Parents and school committees are neither aware of their oversight roles nor participating in school management. However, there is substantial heterogeneity in outcomes across states. Karnataka has better student and teacher outcomes as well as higher levels of community awareness and participation than the other two states. We find substantial variation in teacher effort within schools, but most observable teacher characteristics are not associated with teacher effort. One reason for low teacher effort may be lack of accountability. Regression analysis suggests low rates of teacher attendance are only part of the problem of low student achievement. The gains in test scores associated with higher rates of attendance and engagement in teaching are small in the states of Madhya Pradesh and Uttar Pradesh, suggesting teachers themselves may not be effective. Ineffective teaching may result from lack of accountability as well as poor professional development of teachers. Further research is needed to examine not only issues of accountability but also professional development of teachers.Academic Achievement; annual grants; average class size; basic competencies; basic education; basic services; blackboards; call; civil service; civil service teachers; class size; class sizes
Community Participation in Public Schools: The Impact of Information Campaigns in Three Indian States
This study evaluates the impact of a community-based information campaign on school performance from a cluster randomized control trial. The campaign consisted of eight to nine public meetings in each of 340 treatment villages across three Indian states to disseminate information to the community about its state mandated roles and responsibilities in school management. The findings from the first follow-up 2-4 months after the campaign show that providing information through a structured campaign to communities had a positive impact in all three states. In two states there was a significant and positive impact on reading (14-27 percent) in one of the three grades tested; in the third state there was a significant impact on writing in one grade (15 percent) and on mathematics in the other grade tested (27 percent). The intervention is associated with improvement in teacher effort in two states. Some improvements occurred in the delivery of certain benefits entitled to students (stipend, uniform, and mid day meal) and in process variables such as community participation in each of the three states. Follow-up research needs to examine whether there is a systematic increase in learning when the impact is measured over a longer time period and whether a campaign sustained over a longer time is able to generate greater impact on school outcomes.annual grants; attendance requirements; average treatment effect; basic education; blackboards; call; civil service; civil service teachers; classroom; Community Participation; competencies
New interaction potentials for borate glasses with mixed network formers.
We adapt and apply a recently developed optimization scheme used to obtain effective potentials for aluminosilicate glasses to include the network former boron into the interaction parameter set. As input data for the optimization, we used the radial distribution functions of the liquid at high temperature generated by ab initio molecular dynamics simulations, and density, coordination, and elastic modulus of glass at room temperature from experiments. The new interaction potentials are shown to reliably reproduce the structure, coordination, and mechanical properties over a wide range of compositions for binary alkali borates. Furthermore, the transferability of these new interaction parameters allows mixing to reliably reproduce the properties of various boroaluminate and borosilicate glasses
Partial oxidation of Step-Bound Water Leads to Anomalous pH Effects on Metal Electrode Step-Edges
The design of better heterogeneous catalysts for applications such as fuel
cells and electrolyzers requires a mechanistic understanding of
electrocatalytic reactions and the dependence of their activity on operating
conditions such as pH. A satisfactory explanation for the unexpected pH
dependence of electrochemical properties of platinum surfaces has so far
remained elusive, with previous explanations resorting to complex co-adsorption
of multiple species and resulting in limited predictive power. This knowledge
gap suggests that the fundamental properties of these catalysts are not yet
understood, limiting systematic improvement. Here, we analyze the change in
charge and free energies upon adsorption using density-functional theory (DFT)
to establish that water adsorbs on platinum step edges across a wide voltage
range, including the double-layer region, with a loss of approximately 0.2
electrons upon adsorption. We show how this as-yet unreported change in net
surface charge due to this water explains the anomalous pH variations of the
hydrogen underpotential deposition (Hupd) and the potentials of zero total
charge (PZTC) observed in published experimental data. This partial oxidation
of water is not limited to platinum metal step edges, and we report the charge
of the water on metal step edges of commonly used catalytic metals, including
copper, silver, iridium, and palladium, illustrating that this partial
oxidation of water broadly influences the reactivity of metal electrodes.Comment: 9 pages, 8 figures and 3 table
Cell-Taught Gene Therapy for the Preservation and Regeneration of Cardiac Tissue Following Chronic Heart Failure
Heart failure is the primary cause of mortality and morbidity in the Western world. Although cell therapy has demonstrated improvement in cardiac function, these benefits are being attributed to the activation of paracrine factors, rather than the differentiation and integration of the transplanted cells into the host tissue. Based on this knowledge the focus of this thesis work was to deliver paracrine factors, and evaluate its effect on cardiac function. Gene therapy has evolved as a promising option to deliver pro-angiogenic proteins to infarct zones, thus providing cardiac benefit. This study has identified a gene design without the use of viral vectors, to deliver transient, yet therapeutic levels of an angiogenic chemokine, Stromal-Derived-Cell-Factor-1 (SDF-1) in rodents with chronic heart failure, and has reported significant improvement in cardiac function. The use of Kozak sequences and translational enhancers helped boost gene expressions which could be accurately measured using bio-fluorescence imaging techniques. This improvement in gene expression was directly proportional to the improvement in cardiac function in rodents with chronic heart failure. However effective plasmid delivery, via the systemic route, requires the encapsulation and targeting of the plasmid to infarct zones. An infarct-specific peptide was identified with the help of phage panning techniques and nanoparticles, formulated with poly lactide-co-glycolide (PLGA), were employed to encapsulate a fluorescent dye, 6-Coumarin (6C). Targeted and efficient delivery was achieved by tagging the surface of the nanoparticles with the targeting peptide. Another aspect of this study was to identify novel paracrine factors responsible for reverse ventricular remodeling, following the treatment of chronic heart failure with mesenchymal stem cell (MSC) therapy, using microarray analysis. Overall, this study has identified the design and delivery technique for a therapeutic, cardiac-benefiting gene to the infarct zone, in rodents with heart fail
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