Thermal-structural test facilities at NASA Dryden

The National Aero-Space Plane (NASP) has renewed interest in hypersonic flight and hot-structures technology development for both the airframe and engine. The NASA Dryden Thermostructures Research Facility is a unique national facility that was designed to conduct thermal-mechanical tests on aircraft and aircraft components by simulating the flight thermal environment in the laboratory. The layout of the facility is presented, which includes descriptions of the high-bay test area, the instrumentation laboratories, the mechanical loading systems, and the state-of-the-art closed-loop thermal control system. The hot-structures test capability of the facility is emphasized by the Mach-3 thermal simulation conducted on the YF-12 airplane. The Liquid-Hydrogen Structural Test Facility, which is presently in the design phase, will provide the capability of thermally testing structures containing hydrogen

Charter School Funding: Inequity in the City

Public charter schools are a growing part of K-12 education. Charter schools are public schools that are granted operational autonomy by their authorizing agency in return for a commitment to achieve specific performance goals. Like traditional public schools, charter schools are free to students and overseen by the state. Unlike traditional public schools, however, most charters are open to all students who wish to apply, regardless of where they live. If a charter school is over-subscribed, usually random lotteries determine which students will be admitted. Most charter schools are independent of the traditional public school district in which they operate

Awareness and Use of Electronic Health Records in Entry-Level Occupational Therapy and Occupational Therapy Assistant Curricula

The Accreditation Council for Occupational Therapy Education (ACOTE) requires programs to instruct entry-level occupational therapy (OT) and occupational therapy assistant (OTA) students in technology that may include electronic documentation systems, distance communication, virtual environments, and telehealth (standard B1.8). At this time, there are no publications describing if and how electronic health record (EHR) instruction is implemented in entry-level OT and OTA programs. The purpose of this study is to investigate awareness and use of EHRs in entry-level OT and OTA curricula. Respondents from 76 nationally accredited entry-level programs (two OT doctoral, 24 OT masters, two OT combined bachelors/masters, and 48 OTA) completed a survey. The findings showed inconsistent and incomplete EHR instruction in entry-level OT and OTA education. This study provides a baseline for investigating best practices in EHR education for entry-level OT and OTA students

Charter School Funding: Inequity Surges in the Cities

Public charter schools increasingly are part of both the national conversation about education policy and the local urban scene in America. Previous studies of public charter schools have examined their achievement effects focused on both the state and metropolitan levels, and funding disparities focused on the state levels. This report is the latest update to a series of studies of funding inequities concentrating on revenue disparities between charters and traditional public schools where charters are most common: metropolitan areas across the country. The 18 urban areas that primarily inform our study include Atlanta, Boston, Camden, Chicago, Denver, Detroit, Houston, Indianapolis, Little Rock, Los Angeles, Memphis, New Orleans, New York City, Oakland, Phoenix, San Antonio, Tulsa, and Washington, D.C. Because these locations include fourteen for which we have at least some prior data, we are able to examine funding inequities over time

A Good Investment: The Updated Productivity of Public Charter Schools in Eight U.S. Cities

In 2015-16, the United States spent over $660 billion on its public education system in hopes of providing children with greater opportunities to excel academically and to improve their life trajectories. While public education dollars have risen at a relatively fast pace historically, future challenges, including underfunded pension liabilities, suggest policymakers should economize wherever possible. Meanwhile, the number of public charter schools has increased exponentially. From 1991 to 2018, charter school legislation passed in 44 states and the nation’s capital, and student enrollment in charters increased to around 3.2 million

Charter School Funding: (More) Inequity in the City

Public charter schools are a growing part of K-12 education. Charter schools are public schools that are granted operational autonomy by their authorizing agency in return for a commitment to achieve performance levels specified in a contract. Like traditional public schools, charter schools are prohibited from charging tuition, must not discriminate in admissions or be religious in their operation or affiliation, and are overseen by a public entity. Unlike traditional public schools, however, most charters are open to all students who wish to apply, regardless of where they live. If a charter school is over-subscribed, random lotteries usually determine which students are admitted. Most charter schools are independent of the traditional public school district in which they operate

Bigger Bang, Fewer Bucks? The Productivity of Public Charter Schools in Eight U.S. Cities

School choice skeptics frequently claim that public charter schools perform no better than traditional public schools (TPS) on standardized test scores. Although a few individual studies of public charter schools have supported that claim, the most comprehensive research reports conclude that, though results vary across states and charter school networks, on average public charter schools have a positive effect on student achievement. Charter school performance appears to be especially strong in cities. Moreover, none of the studies of the relative effectiveness of public charter schools have explicitly considered the funding differences that exist across the two public school sectors. All of our research team’s prior reports have found that students in public charter schools receive substantially fewer annual educational resources than their TPS peers. Private philanthropy does not compensate charters for the lack of equity in public funding because TPS receive it, too, and philanthropic dollars compose only 2.5 percent of total charter revenues nationally

Making it Count: The Productivity of Public Charter Schools in Seven U.S. Cities

Historically, public education spending in the United States has risen at a steady rate. In 2017-2018 alone, policymakers spent over $780 billion on the public education system. The intent behind education spending is to create more and better opportunities for students to excel academically, thereby improving their life trajectories. However, looming future challenges such as underfunded teacher pension liabilities suggest that policymakers should “economize” their spending wherever possible. The number of public charter schools, concomitantly, has experienced near exponential growth. From 1991 to 2019, charter school legislation passed in 45 states and the District of Columbia. Student enrollments in public charter schools have increased to over 3.3 million. Scarcity, inherent among all resources, makes attention to cost-effectiveness and return-on-investment (ROI) considerations critical to long-term policy success. Therefore, we examine which types of public schooling stand to give each student the greatest “bang for their buck.” Our analysis compares the productivity of different organizations providing a similar service — in this case, public education

The transcriptional response of soil bacteria to long-term warming and short-term seasonal fluctuations in a terrestrial forest

© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Chowdhury, P. R., Golas, S. M., Alteio, L., Stevens, J. T. E., Billings, A. F., Blanchard, J. L., Melillo, J. M., & DeAngelis, K. M. The transcriptional response of soil bacteria to long-term warming and short-term seasonal fluctuations in a terrestrial forest. Frontiers in Microbiology, 12, (2021): 666558, https://doi.org/10.3389/fmicb.2021.666558.Terrestrial ecosystems are an important carbon store, and this carbon is vulnerable to microbial degradation with climate warming. After 30 years of experimental warming, carbon stocks in a temperate mixed deciduous forest were observed to be reduced by 30% in the heated plots relative to the controls. In addition, soil respiration was seasonal, as was the warming treatment effect. We therefore hypothesized that long-term warming will have higher expressions of genes related to carbohydrate and lipid metabolism due to increased utilization of recalcitrant carbon pools compared to controls. Because of the seasonal effect of soil respiration and the warming treatment, we further hypothesized that these patterns will be seasonal. We used RNA sequencing to show how the microbial community responds to long-term warming (~30 years) in Harvard Forest, MA. Total RNA was extracted from mineral and organic soil types from two treatment plots (+5°C heated and ambient control), at two time points (June and October) and sequenced using Illumina NextSeq technology. Treatment had a larger effect size on KEGG annotated transcripts than on CAZymes, while soil types more strongly affected CAZymes than KEGG annotated transcripts, though effect sizes overall were small. Although, warming showed a small effect on overall CAZymes expression, several carbohydrate-associated enzymes showed increased expression in heated soils (~68% of all differentially expressed transcripts). Further, exploratory analysis using an unconstrained method showed increased abundances of enzymes related to polysaccharide and lipid metabolism and decomposition in heated soils. Compared to long-term warming, we detected a relatively small effect of seasonal variation on community gene expression. Together, these results indicate that the higher carbohydrate degrading potential of bacteria in heated plots can possibly accelerate a self-reinforcing carbon cycle-temperature feedback in a warming climate.Funding for this study was provided by the Department of Energy Terrestrial Ecosystem Sciences program under contract number DE-SC0010740. Sites for sample collection were maintained with funding in part from the National Science Foundation (NSF) Long-Term Ecological Research (DEB 1237491) and the NSF Long-Term Research in Environmental Biology (DEB 1456528) programs