7,208 research outputs found
The processing of IMU data in ENTREE implementation and preliminary results
It is demonstrated that the shuttle entry trajectory can be accurately represented in ENTREE with IMU data available postflight. The IMU data consist of platform to body quaternions, and accumulated sensed velocities in mean of fifty (M50) coordinates approximately every second. The preprocessing software required to incorporate the IMU data in ENTREE is described as well as the relatively minor code changes to the ENTREE program itself required to process the IMU data. Code changes to the ENTREE program and input tape data format and content changes are described
Formulation of additional observables for ENTREE
The S-band X and Y angles, SAMS, and TACAN range and bearing were incorporated into the ENTREE software for use by experimenters at LaRC for entry trajectory reconstruction purposes. Background discussions present the need for this added capability. Formulations for the various observables are presented. Both north-south and east-west antenna mounts were provided for in the S-band angle computations. Sub-vehicle terrain height variations are included in the SAMS model. Local magnetic variations were incorporated for the TACAN bearing computations. Observable formulations are discussed in detail along with the partial computations
Substance Use Among Lesbian, Gay, and Bisexual Clients Entering Substance Abuse Treatment: Comparisons to Heterosexual Clients
Objective: This study evaluated whether sexual orientation-specific differences in substance use behaviors exist among adults entering substance abuse treatment. Method: Admissions records (July 2007âDecember 2009) were examined for treatment programs in San Francisco, California receiving government funding. Lesbian, gay, and bisexual (LGB) persons (n = 1,441) were compared to heterosexual persons (n = 11,770) separately by sex, examining primary problem substance of abuse, route of administration, age of first use, and frequency of use prior to treatment. Results: Regarding bisexual males, the only significant finding of note was greater prevalence of methamphetamine as the primary substance of abuse. When compared to heterosexual men, gay and bisexual men evidenced greater rates of primary problem methamphetamine use (44.5% and 21.8%, respectively, vs. 7.7%, adjusted odds ratios [ORs] 6.43 and 2.94), and there was lower primary heroin use among gay men (9.3% vs. 25.8%, OR 0.35). Among LGB individuals, race and ethnicity did not predict primary problem substance, except that among LGB men and women, a non-White race predicted cocaine use (OR 4.83 and 6.40, respectively), and among lesbian and bisexual women, Hispanic ethnicity predicted lower odds of primary cocaine use (OR 0.24). When compared to heterosexual men, gay men were more likely to smoke their primary problem substance (OR 1.61), first used this substance at an older age (M = 23.16 vs. M = 18.55, p \u3c .001), and used this substance fewer days prior to treatment (M = 8.75 vs. M = 11.41, p \u3c .001). There were no differences between heterosexual and lesbian or bisexual women. Conclusions: There were unique patterns of substance use for gay and bisexual men entering substance abuse treatment, but women did not evidence differences. Gay men evidenced unique factors that may reflect less severity of use when entering treatment including fewer days of use and a later age of initiation of their primary problem substances. The results underscore the importance of being sensitive to differences between gay, bisexual, and heterosexual males when considering substance use disorders
Power optimal single-axis articulating strategies
Power optimal single axis articulating PV array motion for Space Station Freedom is investigated. The motivation is to eliminate one of the articular joints to reduce Station costs. Optimal (maximum power) Beta tracking is addressed for local vertical local horizontal (LVLH) and non-LVLH attitudes. Effects of intra-array shadowing are also presented. Maximum power availability while Beta tracking is compared to full sun tracking and optimal alpha tracking. The results are quantified in orbital and yearly minimum, maximum, and average values of power availability
What Ever Happened to the Arts, and Is Education Next?
This essay challenges a paradigm which views the arts as education\u27s overlooked and unappreciated sibling, with the voices of both historical and contemporary arts advocates. It will propose ways in which educators might again embrace a more holistic educational paradigm which allows the unknown, unpredictable, messy, and challenging processes and products visual arts actualize. Finally, in-progress research will suggest that educator-preparation programs must model arts-infused curricula and pedagogical practices not only for the reasons addressed in this text, but also to empower systemic transformation in K-higher education
Informal Urban Displacement in Rio de Janeiro: Ecolimits and Disaster Biopolitics in the Favela Santa Marta
This dissertation examines the effect of environmental discourse and disaster risk reduction mapping in the favela Santa Marta, an urban informal settlement in the municipality of Rio de Janeiro, Brazil. With the worldâs largest urban forest within the metro area, Rio de Janeiro is unusual for a metropolis of more than ten million people in the rapidly urbanizing country of Brazil. The government of Rio de Janeiro has attempted to control favela settlements since the early 20th century, but beginning in the 1990s the prefecture began delimiting favela settlements with environmentally protected areas called ecolimits. According to the stateâs calculations, in the 2000s favelas began to rapidly expand into the urban forest, which is protected by the ecolimits and national parks. In 2009, the state built a wall around Santa Marta, justified by concerns about expansion into the adjacent forest. The state then labeled Santa Marta the model favela after infrastructure improvements there and the installation of the first Pacification Police Unit, a new form of community policing begun in 2008 for favelas.
The focus of my study is the particular ways that the government has framed its resettlement efforts in Santa Marta and how favela residents responded. I employ the concept of biopolitics assemblage to critically investigate the stateâs and international institutionsâ discursive and material practices of disaster risk management in Santa Marta. I collected data using a mixed methods approach during 15 months of fieldwork. Through archival research, I document the history of favela control tactics and trace the roots of disaster risk management in Rio de Janeiro to a World Bank financed disaster response project initiated in 1988. Using ethnographic methods, I documented residentsâ responses to and understandings of the governmentâs resettlement project for Santa Marta. My results indicate that the state has discursively shifted the problem of favelas from a social question to an environmental one, while residents continue to frame favela conditions as a social justice issue and challenge the stateâs assessment of environmental risk
Street Needs: Are Hawaiâi Homeless Teens Information Poor?
M.A. Thesis. University of HawaiÊ»i at MÄnoa 2017
Auctioning Bulk Mobile Messages
The search for enablers of continued growth of SMS traffic, as well asthe take-off of the more diversified MMS message contents, open up forenterprises the potential of bulk use of mobile messaging , instead ofessentially one-by-one use. In parallel, such enterprises or valueadded services needing mobile messaging in bulk - for spot use or foruse over a prescribed period of time - want to minimize totalacquisition costs, from a set of technically approved providers ofmessaging capacity.This leads naturally to the evaluation of auctioning for bulk SMS orMMS messaging capacity, with the intrinsic advantages therein such asreduction in acquisition costs, allocation efficiency, and optimality.The paper shows, with extensive results as evidence from simulationscarried out in the Rotterdam School of Management e-Auction room, howmulti-attribute reverse auctions perform for the enterprise-buyer, aswell as for the messaging capacity-sellers. We compare 1- and 5-roundauctions, to show the learning effect and the benefits thereof to thevarious parties. The sensitivity will be reported to changes in theenterprise's and the capacity providers utilities and prioritiesbetween message attributes (such as price, size, security, anddelivery delay). At the organizational level, the paper also considersalternate organizational deployment schemes and properties for anoff-line or spot bulk messaging capacity market, subject to technicaland regulatory constraints.MMS;EMS;Mobile commerce;SMS;multi-attribute auctions
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