Autonomous navigation accuracy using simulated horizon sensor and sun sensor observations

A relatively simple autonomous system which would use horizon crossing indicators, a sun sensor, a quartz oscillator, and a microprogrammed computer is discussed. The sensor combination is required only to effectively measure the angle between the centers of the Earth and the Sun. Simulations for a particular orbit indicate that 2 km r.m.s. orbit determination uncertainties may be expected from a system with 0.06 deg measurement uncertainty. A key finding is that knowledge of the satellite orbit plane orientation can be maintained to this level because of the annual motion of the Sun and the predictable effects of Earth oblateness. The basic system described can be updated periodically by transits of the Moon through the IR horizon crossing indicator fields of view

Documentation Related to a 1991 Observation of Sturgeon in the Rio Grande – Río Bravo, USA (Texas) and Mexico (Coahuila)

This digital archive provides a compilation of previously unpublished information regarding a 1991 observation of a live sturgeon (Family Acipenseridae) in the Rio Grande-Río Bravo of the USA and Mexico. Though a few specimens collected in the 19th century support occurrence of sturgeon in this river basin, lack of credible, recent records has often led to this species not being recognized as part of the basin’s native fish fauna, and certainly not part of its modern fish community. The second and third authors of this document manage the Fishes of Texas Project (Hendrickson, Dean A., & Cohen, Adam E. (2015). Fishes of Texas Project Database (version 2.0). Texas Advanced Computing Center, University of Texas at Austin. http://doi.org/10.17603/C3WC70) and knew of the unpublished 1991 observation of sturgeon reported here. They requested the content provided here from first author (Platania) who provided what follows below (verbatim as received in April 2018) and permission to archive it for public access.Integrative Biolog

Assessing the Impact of Practice Transition on Advance Practice Registered Nurse’s Job Stress and Job Satisfaction

Problem The impact of the transition to full practice authority (FPA) on job satisfaction and job stress has not been previously described in the literature. Method Job satisfaction, job stress, and practice transition stress data was collected from a sample of 33 Advance Practice Registered Nurses (APRN) working at the VA St Louis Health Care System using Misener Nurse Practitioner Job Satisfaction Survey (MNPJSS), National Institute of Occupational Safety and Health Generic Job Stress Questionnaire (NIOSH-GJSQ), and student-developed practice transition stress questionnaire during the initial phase of FPA transition. Results APRNs were minimally satisfied to satisfied. Job stress from work conflict, role ambiguity, intragroup conflict, and intergroup conflict has a significant negative effect on job satisfaction (p \u3c .001) and perceived control, and task control has a positive effect (p \u3c 001). Practice transition stress had a negative effect on overall satisfaction (p \u3c .01). Misaligned APRNs were different from aligned APRN in the level of role conflict (p \u3c .01) and percentage of positive emotions toward full practice authority (p \u3c .05). Conclusion FPA transition does generate stress and emotions. Practice transition stress experienced was in a positive response pattern. Job stress from work conflict, role ambiguity, intragroup conflict, and intergroup conflicts have a more significant impact on job satisfaction than the transition to FPA. Individual and organization interventions were developed. Implication for Practice Strategies for supporting APRNs when transitioning to FPA, reducing job stress by decreasing conflict at work, increase task and decision control, and ensuring APRNs are in alignment with the Consensus Model is needed. These actions may improve APRN job satisfaction

Incorporating Clients\u27 Underlying Religious and Spiritual Beliefs in Therapy May Improve Substance Abuse Treatment Practices, Especially for Persons of Color

ABSTRACT INCORPORATING CLIENTS\u27 UNDERLYING RELIGIOUS AND SPIRITUAL BELIEFS IN THERAPY MAY IMPROVE SUBSTANCE ABUSE TREATMENT PRACTICES, ESPECIALLY FOR PERSONS OF COLOR Author: Marguerite E. Hendrickson Dissertation Chair: Ram Cnaan, Ph.D. Although pharmacological breakthroughs have improved treatment outcomes for alcohol and opioid dependence through decreased cravings and blocked reward effects, there are no FDA approved medications for the treatment of cocaine dependence. In addition, many routinely practiced psychotherapy models for addiction remain limited in their effects. As composite case studies will reveal, cravings and urges to use cocaine prevent clients from obtaining and sustaining abstinence. Multiple case studies will examine how clients use their underlying religious and spiritual beliefs to cope with cravings and urges. The first paper in this dissertation investigates how clients’ religious problem-solving styles can both positively and negatively affect the recovery process when viewed through the lens of a scientifically validated instrument, Religious Problem-Solving Scale. The second paper examines how addressing religious/spiritual issues in therapy may strengthen the therapeutic alliance with African Americans in outpatient treatment for cocaine dependence. Given the research evidence that African Americans and Hispanics actively engage their religious/spiritual beliefs during recovery, this multi- paper dissertation suggests that clinicians adapt evidence-based therapies by incorporating religious/spiritual content to meet the needs of the growing population of color in the United States

Origin of the fast magnetization tunneling in the single-molecule magnet [Ni(hmp)(tBuEtOH)Cl]4

We present high-frequency angle-dependent EPR data for crystals of [NixZn1-x(hmp)(t-BuEtOH)Cl]4 (x = 1 and 0.02). The x = 1 complex behaves as a single-molecule magnet at low temperatures, displaying hysteresis and exceptionally fast magnetization tunneling. We show that this behavior is related to a 4th-order transverse crystal-field interaction, which produces a significant tunnel-splitting (~10 MHz) of the ground state of this S = 4 system. The magnitude of the 4th-order anisotropy, and the dominant axial term (D), can be related to the single-ion interactions (Di and Ei) at the individual NiII sites, as determined for the x = 0.02 crystals.Comment: 11 pages including 2 figure