Buoyant Venus station feasibility study. Volume IV - Communications and power Final report

Telecommunication and power supply requirements for inflatable buoyant Venus statio

Development and flight tests of a Kalman filter for navigation during terminal area and landing operations

A Kalman filter for aircraft terminal area and landing navigation was implemented and flight tested in the NASA Ames STOLAND avionics computer onboard a Twin Otter aircraft. This system combines navaid measurements from TACAN, MODILS, air data, radar altimeter sensors along with measurements from strap-down accelerometer and attitude angle sensors. The flight test results demonstrate that the Kalman filter provides improved estimates of the aircraft position and velocity as compared with estimates from the more standard complementary filter. The onboard computer implementation requirements to achieve this improved performance are discussed

The Impact of Situational Constraints, Role Stressors, and Commitment on Employee Altruism

This study investigated relations between 3 work-related stressors (role ambiguity, role conflict, and organizational constraints) and altruistic behavior in the workplace. It was predicted that each stressor would be negatively related to altruism and that these relations would be moderated by affective commitment (AC). Data from 144 incumbent-supervisor dyads revealed that all 3 stressors; were weakly and negatively related to altruism. Two of these relationships were moderated by AC, although not as predicted. Organizational constraints were positively related to altruism among those reporting high levels of AC but negatively related among those reporting low levels of AC. The pattern was exactly opposite for role conflict. Implications of these findings are discussed

Internal and external axial corner flows

The inviscid, internal, and external axial corner flows generated by two intersecting wedges traveling supersonically are obtained by use of a second-order shock-capturing, finite-difference approach. The governing equations are solved iteratively in conical coordinates to yield the complicated wave structure of the internal corner and the simple peripheral shock of the external corner. The numerical results for the internal flows compare favorably with existing experimental data

Community-based Norms about Intimate Partner Violence: Putting Attributions of Fault and Responsibility into Context

Fault and responsibility are key concepts in understanding how victims and assailants are, or are not, held accountable by society. We used a fractional factorial vignette design with a community-residing sample of 3,679 adults to examine judgments about intimate partner violence (IPV). Although fault, or causal responsibility, was assigned most often to assailants (69%), respondents assigned solution responsibility most often to both persons (52%) or to the victim alone (31%): interpersonal communication for couples (38%) and self-protective actions for victims (i.e., engaging formal authorities [12%] and/or leaving the assailant [11%]) were the most frequent suggestions. Potential injury to the victim and gender/relationship-based norms had the greatest impact on judgments. Findings may inform strategies to alter social norms regarding IPV

Recreational Gun Use by California Adolescents

Most research on adolescents and firearms focus on urban populations, handguns, and homicide. The present investigation examines the prevalence and correlates of recreational gun use (RGU) - for hunting or target shooting - among 5801 community-residing 12- to 17-year old Californians. Data are from the first statewide California Health Interview Survey (CHIS), and person, design, and population weights were applied to the data. About one-fifth (22.4%) of California adolescents report that they have gone hunting or target shooting. Nearly two thirds (62.8%) have hunted with a family member, typically (67.3%) their father. Recreational gun use among adolescents appears to be linked to a few basic demographic characteristics; most notably, males had an AOR of RGU nearly five times that of females. Some of the variables associated with RGU are consistent with those for violent gun use; differences, however, suggest that separate approaches to preventing firearm-related injury may be warranted

Views of Intimate Partner Violence in Same- and Opposite-Sex Relationships

Attitudes toward same-sex intimate relationships and toward intimate partner violence (IPV) are changing. Little research, however, has examined norms about IPV in same-sex relationships. Using a fractional factorial (experimental vignette) design, we conducted random-digit-dialed interviews in four languages with 3,679 community-residing adults. Multivariate analyses of responses to 14,734 vignettes suggest that IPV against gay male, lesbian, and heterosexual women is more likely than that against heterosexual men to be considered illegal, that it should be illegal, police called, and a stay-away order issued. Regardless of gender and sexual orientation, the type of abuse and whether a weapon was displayed are the strongest predictors of respondents\u27 judgments about whether a behavior is illegal and merits a range of societal interventions

Non-Fatal Gun Use in Intimate Partner Violence: A Systematic Review of the Literature

Guns figure prominently in the homicide of women by an intimate partner. Less is known, however, about their non-fatal use against an intimate partner. Following PRISMA guidelines, we searched eight electronic databases and identified 10 original research articles that reported the prevalence of the non-fatal use of firearms against an intimate partner. Results indicate that: 1) There is relatively little research on the subject of intimate partners’ non-fatal gun use against women. 2) The number of U.S. women alive today who have had an intimate partner use a gun against them is substantial: About 4.5 million have had an intimate partner threaten them with a gun and nearly one million have been shot or shot at by an intimate partner. Whether non-fatal gun use is limited to the extreme form of abuse (battering) or whether it occurs in the context of situational violence remains to be seen. Regardless, when it comes to the likely psychological impact, it may be a distinction without a difference; because guns can be lethal quickly and with relatively little effort, displaying or threatening with a gun can create a context known as coercive control, which facilitates chronic and escalating abuse. Implications for policy, practice, and research are discussed, all of which include expanding an implicit focus on homicide to include an intimate partner’s non-fatal use of a gun