Prolate spheroidal slosh model for fluid motion

Mathematical model, designed for zero gravity conditions, analyzes dynamic effects of large amplitude fluid motion interior to a rigid body. It has two advantages over other mathematical models: (1) constrains slosh motion to given region in natural manner, and (2) allows equilibrium position of slosh mass to be anywhere on slosh surface

Kinematic capability in the SVDS

The details of the Remote Manipulator System kinematic model implemented into the Space Vehicle Dynamics Simulation are given. Detailed engineering flow diagrams and definitions of terms are included

RMS massless arm dynamics capability in the SVDS

The equations of motion for the remote manipulator system, assuming that the masses and inertias of the arm can be neglected, are developed for implementation into the space vehicle dynamics simulation (SVDS) program for the Orbiter payload system. The arm flexibility is incorporated into the equations by the computation of flexibility terms for use in the joint servo model. The approach developed in this report is based on using the Jacobian transformation matrix to transform force and velocity terms between the configuration space and the task space to simplify the form of the equations

Natural Enemies of Alfalfa Weevil, \u3ci\u3eHypera Postica\u3c/i\u3e (Coleoptera: Curculionidae), in Minnesota

Alfalfa weevil, Hypera postica, is present throughout Minnesota. How- ever, economically damaging populations seldom occur, due to a combination of natural enemies and adverse climatic conditions. Five natural enemies of alfalfa weevil were found in Minnesota. Microctonus aethiopoides (Hymenoptera: Braconidae), a parasitoid of adults, was recovered from 43 of 65 counties surveyed during 1984 and 1985. Tetrastichus incertus (Hymenoptera: Eulophidae) and Bathyplectes curculionis (Hymenoptera: Ichneumonidae), para­sitoids of larvae, were each recovered from 13 of 15 counties surveyed during 1991-1993. Bathyplectes anurus, another parasitoid of larvae, was recovered from one county In 1991, four counties in 1992, and six counties in 1993. Zoophthora phytonomi (Entomophthora: Entomophthoraceae), a pathogen of larvae, was recovered from 14 of 15 counties surveyed in 1991-1993. Winters with low minimum temperatures and little snow cover were detrimental to the weevil. Usually, southeastern Minnesota has milder winters and higher alfalfa weevil populations than other areas of the State. However, even here, because of natural enemies, weevil populations seldom reach economically damaging levels

Self-regulated Strategy Development (SRSD) for Writing: A Tier 2 Intervention for Fifth Grade

The purpose of this study was to examine whether Self-Regulated Strategy Development (SRSD) for writing could be used as a Tier 2 intervention to improve the writing of fifth grade students identified as performing below the 50th percentile on AIMSweb curriculum-based measures of correct writing sequences (WE-CBM CWS). Results of RMANOVA indicated that students in the SRSD Group made significant improvements in their WE-CBM mean score compared to the Control Group from pre- to post-test. Additional analyses using a modified WE-CBM that added one minute for students to organize their writing thoughts (EWE-CBM) did not show significant improvements to mean CWS scores. Qualitative analyses indicated that the intervention teacher and SRSD students found the intervention method to be easy to follow, helped improve their writing, and that they will use it again in the future. Evidence from this study suggests that SRSD can be effectively used as a Tier 2 writing intervention within a multi-tiered system of supports model. The limitations and implications for practice are discussed

More Graduates, Less Criminals? The Economic Impacts of the Milwaukee Parental Choice Program

Although an abundance of research indicates that private schooling can benefit individual children through higher test scores, the effects on society are less clear. We monetize and forecast the social impacts of the Milwaukee Parental Choice Program (MPCP) in the United States. We use existing literature on the impacts of the MPCP on criminal activity and graduation rates. Between 2016 and 2035, students who use a voucher in the MPCP will generate additional economic benefits of $473 million associated with higher graduation rates, and$26 million associated with fewer felonies and misdemeanors, relative to their traditional public school peers

New frontiers in ocean exploration: the E/V Nautilus, NOAA Ship Okeanos Explorer, and R/V Falkor 2019 field season

© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Raineault, N.A., and J. Flanders, eds. (2020). New frontiers in ocean exploration: The E/V Nautilus, NOAA Ship Okeanos Explorer, and R/V Falkor 2019 field season. Oceanography 33(1), supplement, 122 pp., https://doi.org/10.5670/oceanog.2020.supplement.01.New Frontiers in Ocean Exploration: The E/V Nautilus, NOAA Ship Okeanos Explorer, and R/V Falkor 2019 Field Season is the tenth consecutive supplement on ocean exploration to accompany Oceanography. These booklets provide details about the innovative technologies deployed to investigate the seafloor and water column and explain how telepresence can both convey the excitement of ocean exploration to global audiences and allow scientists as well as the public on shore to participate in expeditions in real time. The supplements also describe the variety of educational programs the Ocean Exploration Trust, the NOAA Office of Ocean Exploration and Research, and the Schmidt Ocean Institute support in conjunction with schools, museums, visitors centers, and aquariums, as well as internships that bring high school students, undergraduates, graduate students, teachers, and artists on board ships. Through these supplements, we have explored the geology, chemistry, biology, and archaeology of parts of the global ocean and seas. We hope you enjoy this booklet and share it widely.Support for this publication is provided by the Ocean Exploration Trust, the NOAA Office of Ocean Exploration and Research, the National Marine Sanctuary Foundation, and the Schmidt Ocean Institute

Economic Impacts of Ethanol Production in Georgia

Capital costs to construct a conventional ethanol plant producing 100 million gallons per year are $170.593 million. Average annual net returns average$59.216 million with a 1% chance of annual net returns less than $0. Ethanol production stimulates total economic output of$314.221 million in the Georgia economy. Wages and benefits total $20.181 million for 408 jobs in Georgia. State and local governments derive a total of$4.572 million in tax revenues from ethanol production.Resource /Energy Economics and Policy,

Clostridium difficile infection in the United States: A national study assessing preventive practices used and perceptions of practice evidence

We surveyed 571 US hospitals about practices used to prevent Clostridium difficile infection (CDI). Most hospitals reported regularly using key CDI prevention practices, and perceived their strength of evidence as high. The largest discrepancy between regular use and perceived evidence strength occurred with antimicrobial stewardship programs.Infect. Control Hosp. Epidemiol. 2015;36(8):969–971</jats:p