Solar radiation force modeling for TDRS orbit determination

The relative orbit determination accuracies resulting from several TDRS models are evaluated. These models include spherical, single-plate, and restricted two-plate models. The plate models can be adjusted in both area and reflectivity through differential correction. The restricted two-plate model has an Earth-pointing plate and a solar plate; the orientation of the solar plate is restricted to rotation about an axis perpendicular to the satellite's orbital plane

Student Development During the Occupy SLU Movement Through the Lens of Perry

Perry’s theory of intellectual and ethical development serves as a seminal theory on student development. The civil unrest in Ferguson, Missouri during the 2014-2015 school year resulted in demonstrations on college campuses throughout the country, including the Occupy SLU movement at Saint Louis University. In this mixed-methods phenomenological study, 19 students were interviewed about their experiences during the movement. The research questions underlying this study include: How were SLU students impacted by the events in Ferguson, Missouri during the 2014-2015 school year? How can Perry’s theory be applied to student development during this historic time? How can these findings be utilized to better understand and support student development during periods of civil unrest? The participants’ stories are analyzed through the lens of Perry’s theory using the constant comparative method. Evidence of Perry’s four stages of development emerged from the data, including dualism, multiplicity, relativism, and commitment to relativism, as well as evidence of his three deflections from growth, including temporizing, escape, and retreat. The findings of this research serve to capture the student experiences on campus during Occupy SLU, inform higher education professionals on the impact of this social movement, and provide further validation for Perry’s theory

EC64-210 Swine Ration Suggestions

Extension 64-210 is about rationing for swine. The publication includes information about sources of protein, supplements, and parakeratosis

The Impact of Flag Desecration on Social Justice Movements: The Case of Occupy SLU

The unrest in Ferguson, Missouri brought about many points of contention that evolved into a collective, dualistic mindset: an “us-versus-them mentality” that set community members at odds with each other. A notable instance of divisiveness was the desecration of the American flag by some demonstrators, the merit of which is hotly debated. Some see the desecration of the flag as a powerful means of protest, a literal destruction of a perceived symbol of institutional oppression. Others see it as the ultimate insult to our nation and our nation’s service members who volunteer to uphold the very foundations that protect demonstrators. In the months following the unrest, the demonstrations made their way onto the campus of Saint Louis University, a Jesuit institution in St. Louis, Missouri, organizing the Occupy SLU movement. In the aftermath of this movement, researchers asked students to share their experiences. This research has its origins in that study, focused upon the student experiences on and near campus. This paper provides a brief overview of the historical foundations of flag desecration and evaluates the perceptions of students concerning the use of flag desecration as a tactic during the Occupy SLU movement

Factors affecting the recruitment and retention of linguists in the U.S. Army

This study examined influences on the enlistment and reenlistment decisions for linguists in the US Army. Some of the potential factors considered were: previous language experience, ethnicity, age, gender, and education level of the respondent. Data were obtained from enlisted Army students enrolled in training at the Defense Language Institute (DLI) in Monterey, California during the period April-May 1987. The analysis attempted to determine the differences, if any, that existed between the linguists surveyed and appropriate control groups. Results indicate that the three most prominent reasons given for enlisting were: a chance to better one's self, to earn money for college, and to receive training in a skill. Results further indicate that monetary benefits such as the Army's new linguist specialty pay and increased reenlistment bonuses strongly influence the soldier's reenlistment decision. Significant differences were noted for many of the demographic and background variables when comparisons were made with the 1985 ARI New Recruit Survey and USAREC's 1986 report, The Measurement of Student Attitudes Toward Enlistment Incentives and Career Opportunities.http://archive.org/details/factorsaffecting00lucaMajor, United States ArmyApproved for public release; distribution is unlimited

UFPR-Periocular: A Periocular Dataset Collected by Mobile Devices in Unconstrained Scenarios

Recently, ocular biometrics in unconstrained environments using images obtained at visible wavelength have gained the researchers' attention, especially with images captured by mobile devices. Periocular recognition has been demonstrated to be an alternative when the iris trait is not available due to occlusions or low image resolution. However, the periocular trait does not have the high uniqueness presented in the iris trait. Thus, the use of datasets containing many subjects is essential to assess biometric systems' capacity to extract discriminating information from the periocular region. Also, to address the within-class variability caused by lighting and attributes in the periocular region, it is of paramount importance to use datasets with images of the same subject captured in distinct sessions. As the datasets available in the literature do not present all these factors, in this work, we present a new periocular dataset containing samples from 1,122 subjects, acquired in 3 sessions by 196 different mobile devices. The images were captured under unconstrained environments with just a single instruction to the participants: to place their eyes on a region of interest. We also performed an extensive benchmark with several Convolutional Neural Network (CNN) architectures and models that have been employed in state-of-the-art approaches based on Multi-class Classification, Multitask Learning, Pairwise Filters Network, and Siamese Network. The results achieved in the closed- and open-world protocol, considering the identification and verification tasks, show that this area still needs research and development

HD 145263: Spectral Observations of Silica Debris Disk Formation via Extreme Space Weathering?

We report here time domain infrared spectroscopy and optical photometry of the HD145263 silica-rich circumstellar disk system taken from 2003 through 2014. We find an F4V host star surrounded by a stable, massive 1e22 - 1e23 kg (M_Moon to M_Mars) dust disk. No disk gas was detected, and the primary star was seen rotating with a rapid ~1.75 day period. After resolving a problem with previously reported observations, we find the silica, Mg-olivine, and Fe-pyroxene mineralogy of the dust disk to be stable throughout, and very unusual compared to the ferromagnesian silicates typically found in primordial and debris disks. By comparison with mid-infrared spectral features of primitive solar system dust, we explore the possibility that HD 145263's circumstellar dust mineralogy occurred with preferential destruction of Fe-bearing olivines, metal sulfides, and water ice in an initially comet-like mineral mix and their replacement by Fe-bearing pyroxenes, amorphous pyroxene, and silica. We reject models based on vaporizing optical stellar megaflares, aqueous alteration, or giant hypervelocity impacts as unable to produce the observed mineralogy. Scenarios involving unusually high Si abundances are at odds with the normal stellar absorption near-infrared feature strengths for Mg, Fe, and Si. Models involving intense space weathering of a thin surface patina via moderate (T < 1300 K) heating and energetic ion sputtering due to a stellar superflare from the F4V primary are consistent with the observations. The space weathered patina should be reddened, contain copious amounts of nanophase Fe, and should be transient on timescales of decades unless replenished.Comment: 41 Pages, 5 Figures, 5 Tables, Accepted for publication in the Astrophysical Journa