Designing Scholarships To Improve College Success: Final Report On the Performance-Based Scholarship Demonstration

Performance-based scholarships have two main goals: to give students more money for college and to provide incentives for academic progress. They are designed to reduce the financial burden on low-income students and help them progress academically by offering financial aid contingent upon meeting pre-specified academic benchmarks. The scholarships are intended to cover a modest amount of students' educational costs during the semesters they are offered -- generally between 15 and 25 percent of students' unmet financial need, the difference between students' calculated financial need to attend college and the financial aid they are awarded. The money is paid directly to students, on top of their existing federal and state need-based financial aid, and the students themselves decide how best to use the funds. MDRC launched the Performance-Based Scholarship Demonstration in 2008 to evaluate the effectiveness of these scholarships for as broad a range of low-income students as possible, in a variety of settings, and with varying incentive structures. As such, the evaluation includes more than 12,000 students in institutions across six states to test different performance-based scholarship designs. These results show that even relatively moderate investments in low-income students' education can have modest but long-lasting impacts on their academic outcomes. These findings may be especially relevant to states, institutions, and private scholarship providers seeking purposeful and efficient ways to give low-income students additional financial aid that can also help them succeed academically

Expertise and Bias in Political Communication

Citizens minimize information costs by obtaining political information and guidance from other individuals who have assumed the costs of acquiring and processing political information. A problem occurs because ideal informants, characterized by the joint presence of political expertise and shared viewpoints, are often unavailable or rare within the groups where individuals are located. Hence, individuals must often look beyond their own group boundaries to find such individuals, but obtaining information from individuals located beyond their own groups produces additional information costs. Moreover, the availability of ideal informants varies across groups and settings, with the potential to produce (1) biases in favor of some groups at the expense of others, (2) varying levels of polarization among groups, and (3) context dependent patterns of informant centrality. The paper’s analysis is based on a series of small group experiments, each of which involves two groups of seven subjects who communicate with one another via networked computers in order to obtain information on candidates. The aggregate implications of the experimental results are analyzed using an agent-based model

Integrating Technology and Advising: Studying Enhancements to Colleges’ iPASS Practices

Integrated Planning and Advising for Student Success (iPASS) is an initiative funded by the Bill & Melinda Gates Foundation to support colleges seeking to incorporate technology into their advising and student services. In iPASS, such technology is intended to increase advising’s emphasis on a student’s entire college experience, enabling advisors to more easily: intervene when students show early warning signs of academic and nonacademic challenges, regularly follow up as students progress through college, refer students to tutoring and other support services when needed, and provide personalized guidance that reflects students’ unique needs. MDRC and CCRC partnered with three institutions already implementing iPASS—California State University, Fresno; Montgomery County Community College; and the University of North Carolina at Charlotte—to study how technology can support advising redesign, employing a randomized controlled trial research design. The three institutions increased their emphasis on providing timely support, boosted their use of advising technologies, and used administrative and communication strategies to increase student contact with advisors. The enhancements generally produced only a modestly different experience for students in the program group compared with students in the control group, although at one college, the enhancements did substantially increase the number of students who had contact with an advisor. Consequently, it is not surprising that the enhancements have so far had no discernible positive effects on students’ academic performance. Nonetheless, some staff members indicated in interviews that implementing and enhancing iPASS has enabled their institution to take steps toward a stronger system to support students and help them succeed

Flavopiridol Protects Against Inflammation by Attenuating Leukocyte-Endothelial Interaction via Inhibition of Cyclin-Dependent Kinase 9

Objective: The cyclin-dependent kinase (CDK) inhibitor flavopiridol is currently being tested in clinical trials as anticancer drug. Beyond its cell death–inducing action, we hypothesized that flavopiridol affects inflammatory processes. Therefore, we elucidated the action of flavopiridol on leukocyte–endothelial cell interaction and endothelial activation in vivo and in vitro and studied the underlying molecular mechanisms. Methods and Results: Flavopiridol suppressed concanavalin A–induced hepatitis and neutrophil infiltration into liver tissue. Flavopiridol also inhibited tumor necrosis factor-α–induced leukocyte– endothelial cell interaction in the mouse cremaster muscle. Endothelial cells were found to be the major target of flavopiridol, which blocked the expression of endothelial cell adhesion molecules (intercellular adhesion molecule-1, vascular cell adhesion molecule-1, and E-selectin), as well as NF-κB-dependent transcription. Flavopiridol did not affect inhibitor of κB (IκB) kinase, the degradation and phosphorylation of IκBα, nuclear translocation of p65, or nuclear factor-κB (NF-κB) DNA-binding activity. By performing a cellular kinome array and a kinase activity panel, we found LIM domain kinase-1 (LIMK1), casein kinase 2, c-Jun N-terminal kinase (JNK), protein kinase Cθ (PKCθ), CDK4, CDK6, CDK8, and CDK9 to be influenced by flavopiridol. Using specific inhibitors, as well as RNA interference (RNAi), we revealed that only CDK9 is responsible for the action of flavopiridol. Conclusion: Our study highlights flavopiridol as a promising antiinflammatory compound and inhibition of CDK9 as a novel approach for the treatment of inflammation-associated diseases

Increased Moisture Uptake of NCM622 Cathodes after Calendering due to Particle Breakage

As moisture presents a critical contamination in lithium-ion batteries (LIBs), electrodes and separators need to be post-dried before cell assembly. The moisture adsorption, desorption and re-adsorption of electrodes during processing is strongly dependent on their material system, manufacturing route and microstructure. The microstructure, in turn, is significantly defined by the coating density, which is adjusted by calendering. As a consequence, the calendering step is expected to directly influence the moisture sorption behavior of electrodes. This is why the influence of different coating densities and structural properties on the moisture content of NCM622 cathodes was investigated in this study. For increasing density, an increasing moisture content was detected by Karl Fischer Titration and sorption measurements. SEM and BET analyses showed an increasing amount of NCM622 particle breakage, accompanied by a rising surface area. Hence, the increased moisture uptake of cathodes with higher density is mainly caused by a higher surface area, which results from particle cracking and breakage during calendering. Electrochemical analysis showed that the increased active surface area of cathodes with higher densities leads to a good performance during formation and at low C-rates. However, the reduced porosity impairs the ionic conductivity and causes capacity loss at higher C-rates

Progress in the First Five Years: An Evaluation of Achieving the Dream Colleges in Washington State

In 2004, Lumina Foundation for Education launched an innovative national reform initiative, Achieving the Dream (ATD), with the purpose of increasing the persistence and completion rates of community college students, especially low-income students and students of color, through evidence-based institutional change. Originally consisting of 26 partner colleges in five states, today more than 150 colleges in 30 states and the District of Columbia participate in ATD, which in 2010 became a national nonprofit organization.This report examines six community and technical colleges in Washington State that joined the initiative in 2006 (“Round 3”) and were provided with grant funding from College Spark Washington and the services of a leadership coach and data coach to facilitate their ATD efforts. The report (1) describes the progress each college made in implementing ATD’s “culture of evidence” principles for institutional improvement; (2) examines strategies implemented by the colleges to improve student outcomes, comparing them to interventions developed by the 26 “Round 1” colleges that joined ATD in 2004; and (3) charts trends in student outcomes in the period before and after the Washington colleges joined the initiative. The report also examines lessons from the experiences of the Washington ATD colleges for other colleges seeking to improve student outcomes. This study was conducted during a period of both rapid enrollment growth and sharp cuts in state funding. Making systemic changes in practice in ways that the Washington ATD colleges have begun to do and in the other ways recommended in this report requires resources — resources for new and strengthened information systems, for professional development and training, and for coordination. The Washington colleges have shown that even during a period of dramatic cuts in funding, they have been willing to make major changes in practice. The fact that they have reallocated scarce resources toward practices that have the potential to be more effective illustrates their commitment to greater student success

M-theory Compactifications on Manifolds with G2 Structure

In this paper we study M-theory compactifications on manifolds of G2 structure. By computing the gravitino mass term in four dimensions we derive the general form for the superpotential which appears in such compactifications and show that beside the normal flux term there is a term which appears only for non-minimal G2 structure. We further apply these results to compactifications on manifolds with weak G2 holonomy and make a couple of statements regarding the deformation space of such manifolds. Finally we show that the superpotential derived from fermionic terms leads to the potential that can be derived from the explicit compactification, thus strengthening the conjectures we make about the space of deformations of manifolds with weak G2 holonomy.Comment: 34 pages. Minor changes: typos corrected, references added. Version to appear in Class. Quantum Gra

Production of eta and 3pi mesons in the pd->3HeX reaction at 1360 and 1450 MeV

The cross sections of the pd -> 3He eta, pd -> 3He pi0 pi0 pi0 and pd -> 3He pi+ pi- pi0 reactions have been measured at beam kinetic energies T_p= 1360 MeV and T_p= 1450 MeV using the CELSIUS/WASA detector setup. At both energies, the differential cross section dsigma/dOmega of the eta meson in the pd -> 3He eta reaction shows a strong forward-backward asymmetry in the CMS. The ratio between the pd -> 3He pi+ pi- pi0 and the pd -> 3He pi0 pi0 pi0 cross sections has been analysed in terms of isospin amplitudes. The reconstructed invariant mass distributions of the pi-pi, 3He-pi and 3He-2pi systems provide hints on the role of nucleon resonances in the 3pi production process.Comment: Shorter version accepted to EPJA 10 pages 14 figure

Bridging the Gap: An Impact Study of Eight Developmental Summer Bridge Programs in Texas

Developmental summer bridge programs are a popular strategy for increasing college readiness among recent high school graduates. Aimed at providing an alternative to traditional developmental education, these programs provide accelerated and focused learning opportunities in order to help students acquire the knowledge and skills needed for college success. The current study uses an experimental design to evaluate the outcomes of eight developmental summer bridge programs offered in Texas during the summer of 2009. At each college, students who consented to participate in the study were randomly assigned to either a program group that was eligible to participate in a developmental summer bridge program or a control group that was eligible to use any other services that the college provided. Based on a program model developed by the Texas Higher Education Coordinating Board, the developmental summer bridge programs in this study included four common features: accelerated instruction in developmental math, reading, and/or writing; academic support; a “college knowledge” component; and the opportunity to earn a $400 stipend

At infinity of finite-dimensional CAT(0) spaces

We show that any filtering family of closed convex subsets of a finite-dimensional CAT(0) space $X$ has a non-empty intersection in the visual bordification $\bar{X} = X \cup \partial X$. Using this fact, several results known for proper CAT(0) spaces may be extended to finite-dimensional spaces, including the existence of canonical fixed points at infinity for parabolic isometries, algebraic and geometric restrictions on amenable group actions, and geometric superrigidity for non-elementary actions of irreducible uniform lattices in products of locally compact groups.Comment: An erratum filling in a gap in the proof of an application of the main result has been included to the original pape