Conceptual development of a ground-based radio-beacon navigation system for use on the surface of the moon

A spread-spectrum radio-beacon navigation system for use on the lunar surface is described. The subjects discussed are principle of operation and specifications to include power requirements, operating frequencies, weight, size, and range

Infinite games and sigma-porosity

We show a new game characterizing various types of σ-porosity for Souslin sets in terms of winning strategies. We use the game to prove and reprove some new and older inscribing theorems for σ-ideals of σ-porous type in locally compact metric spaces

Cliques in dense in homogeneous random graphs

The theory of dense graph limits comes with a natural sampling process which yields an inhomogeneous variant math formula of the Erdős–Rényi random graph. Here we study the clique number of these random graphs. We establish the concentration of the clique number of math formula for each fixed n, and give examples of graphons for which math formula exhibits wild long-term behavior. Our main result is an asymptotic formula which gives the almost sure clique number of these random graphs. We obtain a similar result for the bipartite version of the problem. We also make an observation that might be of independent interest: Every graphon avoiding a fixed graph is countably-partite. © The Authors Random Structures & Algorithms Published byWiley Periodicals, Inc. Random Struct. Alg., 201

The Integration of Self-Descriptions and Descriptions by Outside References in the Evaluation of Job Applicants

A study was conducted to determine how different types of information are combined to arrive at evaluations of hypothetical job applicants. Sixty subjects were asked to evaluate nine applicants for the position of elementary school principal. The information describing each applicant included a letter of self-description and from one to three letters from outside references. Results can be summarized as follows: (1) evaluative ratings of job applicants were directly related to the value (level of favorability) of the information contained in the outside letters of reference and the value of the information contained in the self-description; (2) the greater the number of favorable outside letters, the higher was the evaluation; (3) the relative weight or importance of a given self-description or outside reference was dependent upon the other pieces of information with which it was combined. A mathematical model which assumes that subjects average the values of the various types of information provided a good description of the applicant evaluation process

The effects of eccentric, velocity-based training on strength and power in collegiate athletes

International Journal of Exercise Science 9(5): 657-666, 2016. The purpose of this study was to determine if combining velocity-based training with eccentric focus (VEB) and velocity-based training (VBT) results in power and strength gains. Nineteen men and women collegiate track and field athletes participated in this study. The subjects completed a 12-week intervention with either a VEB program or a VBT program. To determine the effectiveness of each program, the subjects completed four exercise tests before and after the training period: vertical jump, medicine ball put test, 1RM projected bench press and 1RM projected squat. There were no significant differences between the VBT results and the VEB results. However, there were significant improvements between the pre-test and post-test measures for each group. There were increases in 1RM projected squat for VEB men, VBT men, and VBT women. There were also significant improvements in the VEB male vertical jump and medicine ball put test pre- to post- intervention. For track and field athletes, both programs may result in strength and power gains, however, the results cannot be used to conclude that one resistance training program is superior

MDMA (‘ecstasy’) use, and its association with high risk behaviors, mental health, and other factors among gay/bisexual men in New York City

This study assesses patterns of use of methylenedioxymethamphetamine (MDMA or ‘ecstasy’), and the characteristics of users, in a sample of 733 men who have sex with men (MSM) in New York City. Among respondents, 13.7% reported using MDMA in the past 6 months, with mean frequency of use of 6.24 times in that period. MDMA users were found to be younger, less educated, to have had more male partners, more one night stands with men, more visits to bars or clubs and sex clubs or bathhouses, to have unprotected anal sex with a male, to be likely to have been the victim of physical domestic violence, to have more gay/bisexual friends, to have disclosed their sexual orientation to more friends, family members, and coworkers, and to have higher levels of gay community participation and affiliation. Among MDMA users, higher frequency of MDMA use was associated with being younger, having more visits to bars or clubs, more gay/bisexual friends, and having an HIV negative test result or never having been tested. MDMA users thus constitute a group at risk for sexually transmitted diseases, including HIV, and other problems. The data suggest that MDMA use is associated with being more ‘out’, which may be advantageous in helping gay men deal with harmful psychological effects of stigma, but may place individuals in settings that expose them to MDMA. These men have also presumably already been well exposed to safer sex messages within the gay community, thus raising challenges for interventions aimed at prevention, as well as opportunities (e.g. MSM and community specific interventions) that need to be further explored

Emotions of the pandemic: phenomenological perspectives

This is the final version. Available from Springer via the DOI in this record. This article provides an introduction to the special issue “Emotions of the Pandemic: Phenomenological Perspectives”. We begin by outlining how phenomenological research can illuminate various forms of emotional experience associated with the exceptional circumstances of the COVID-19 pandemic. In addition, we propose that a consideration of pandemic experience, in all its complexity and diversity, has the potential to yield wider-ranging phenomenological insights. We go on to discuss the thirteen contributions that follow, identifying common themes and points of complementarity.Wellcome TrustArts and Humanities Research CouncilArts and Humanities Research CouncilJapan Society for the Promotion of Scienc