Development and validation of a piloted simulation of a helicopter and external sling load

A generalized, real time, piloted, visual simulation of a single rotor helicopter, suspension system, and external load is described and validated for the full flight envelope of the U.S. Army CH-54 helicopter and cargo container as an example. The mathematical model described uses modified nonlinear classical rotor theory for both the main rotor and tail rotor, nonlinear fuselage aerodynamics, an elastic suspension system, nonlinear load aerodynamics, and a loadground contact model. The implementation of the mathematical model on a large digital computing system is described, and validation of the simulation is discussed. The mathematical model is validated by comparing measured flight data with simulated data, by comparing linearized system matrices, eigenvalues, and eigenvectors with manufacturers' data, and by the subjective comparison of handling characteristics by experienced pilots. A visual landing display system for use in simulation which generates the pilot's forward looking real world display was examined and a special head up, down looking load/landing zone display is described

Penis size: Survey of female perceptions of sexual satisfaction

BACKGROUND: Does the size of the male penis, in terms of length or width, make a difference in female sexual satisfaction? METHOD: To study the effect of penis width vs. length on female sexual satisfaction, 50 sexually active female undergraduate students were asked which felt better, i. e., was penis width or length more important for their sexual satisfaction. RESULTS: None reported they did not know, or that width and length were equally satisfying. A large majority, 45 of 50, reported width was more important (p < .001). CONCLUSION: Implications are discussed, including the fact that the data seem to contradict Masters and Johnson about penis size having no physiological effect on female sexual satisfaction

Ethnic dissimilarity predicts belonging motive frustration and reduced organizational attachment

Some empirical studies show negative consequences of being demographically different from one’s group, but the underlying psychological mechanisms are not well understood. To address this gap, we investigated the role of the belonging and distinctiveness motives in individuals’ experiences of being ethnically dissimilar from their group. We propose that ethnic dissimilarity satisfies group members’ need for distinctiveness whereas it frustrates members’ need for belonging, and this frustration reduces their organizational attachment. An experimental study showed that ethnic dissimilarity led to heightened arousal of the belonging motive, indicating that this motive was frustrated. In a naturalistic study of real-life student groups, ethnic dissimilarity was associated with frustrated belonging, which in turn was associated with reduced organizational attachment. This paper contributes to the literature on demographic dissimilarity in groups by closely examining the effect of demographic dissimilarity on group members’ fundamental motives and reactions to group membership

Delineating ethnic and religious identities in research with British South Asians

The present essay presents a rationale for delineating ethnic and religious identities in empirical research into self-identification among British South Asians. It is argued that the delineation of these identities is important in order to (i) predict and explain the identificatory possibilities available to these individuals; (ii) explore the differential values attributed to these identities; (iii) the level of psychological 'connectedness' between the identities; and (iv) the inter-relations between these identities, particularly in relation to psychological coherence. It is argued that a systematic delineation of these identities may have favourable theoretical, empirical and practical outcomes

Power struggles in the remembering of historical intergroup conflict: hegemonic and counter-narratives about the Argentine “Conquest of the Desert”

This work has been supported by funding from the research projects PICT-2012–1594 and PICT-2014–1003 (FONCyT-Argentina), and a grant from the Latin American Studies, University of Uta

Avoiding the uncanny valley : robot appearance, personality and consistency of behavior in an attention-seeking home scenario for a robot companion

“The original publication is available at www.springerlink.com”. Copyright Springer. DOI: 10.1007/s10514-007-9058-3This article presents the results of video-based Human Robot Interaction (HRI) trials which investigated people’s perceptions of different robot appearances and associated attention-seeking features and behaviors displayed by robots with different appearance and behaviors. The HRI trials studied the participants’ preferences for various features of robot appearance and behavior, as well as their personality attributions towards the robots compared to their own personalities. Overall, participants tended to prefer robots with more human-like appearance and attributes. However, systematic individual differences in the dynamic appearance ratings are not consistent with a universal effect. Introverts and participants with lower emotional stability tended to prefer the mechanical looking appearance to a greater degree than other participants. It is also shown that it is possible to rate individual elements of a particular robot’s behavior and then assess the contribution, or otherwise, of that element to the overall perception of the robot by people. Relating participants’ dynamic appearance ratings of individual robots to independent static appearance ratings provided evidence that could be taken to support a portion of the left hand side of Mori’s theoretically proposed ‘uncanny valley’ diagram. Suggestions for future work are outlined.Peer reviewe

Evolutionary biology: a basic science for psychiatry?

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/65529/1/j.1600-0447.1992.tb03234.x.pd