Optical study of sonic and supersonic jet penetration from a flat plate into a Mach 2 airstream

Optical study of sonic and supersonic jet penetration from flat plate into Mach 2 airstrea

Gender Pay Equity: An Analysis of the United States Women’s National Team Soccer Settlement

Even though the United States Women’s National Team (“WNT”) has been far more successful than the United States Men’s National Team (“MNT”), the team members have experienced unequal treatment from the United States Soccer Federation (“USSF”) since its inception. In March 2019, members of the WNT filed suit against USSF, alleging that it had violated the Equal Pay Act (“EPA”) and Title VII of the Civil Rights Act of 1964. The complaint alleged that USSF had a policy of discriminating against the WNT due to their players’ gender by paying them less than the MNT and providing them with lesser employment conditions than those provided to the MNT. A final judgment on both the EPA and Title VII claims was never given, as both eventually settled outside of court. We analyze the substantive legal and economic arguments made by both parties. We show that USSF’s arguments in support of gender pay disparities were misguided and calculate what proper compensation to the two teams should have looked like from the 2015–2019 period of dispute. Although we frame our analysis in the context of the WNT lawsuit, our analysis has far broader implications for pay equity. We illustrate how the outside market force argument in justification of lower pay for women may often be incorrect. We illustrate how the traditional EPA requirement that an individual must work in the same physical location as their comparator to be considered similarly situated is faulty. This investigation is particularly timely and relevant in light of the substantial rise in remote work arising from the COVID-19 pandemic

Feasibility of Using Telehealth to Deliver the “Powerful Tools for Caregivers” Program

Caregivers report poorer health and wellness than the general population and identify numerous barriers to their attending programs to improve health and wellness.  The purpose of this study was to explore the feasibility of employing a telehealth delivery method to enhance access to caregiver wellness programs. This article presents the quantitative results of a mixed methods feasibility study of translating the Powerful Tools for Caregivers (PTC) program to a telehealth delivery format. Four unpaid family caregivers of older adults participated in a telehealth delivered PTC program, a wellness program with established outcomes in the in-person environment.  The program was delivered using synchronous videoconferencing methods. High class attendance and a high median total average Telehealth Usability Questionnaire score of 5.7 indicated the telehealth delivery method was feasible. This research suggests that telehealth is a feasible delivery format for a caregiver program traditionally delivered in an in-person format

Influence of diffraction on the spectrum and wavefunctions of an open system

In this paper, we demonstrate the existence and significance of diffractive orbits in an open microwave billiard, both experimentally and theoretically. Orbits that diffract off of a sharp edge of the system are found to have a strong influence on the transmission spectrum of the system, especially in the regime where there are no stable classical orbits. On resonance, the wavefunctions are influenced by both classical and diffractive orbits. Off resonance, the wavefunctions are determined by the constructive interference of multiple transient, nonperiodic orbits. Experimental, numerical, and semiclassical results are presented.Comment: 27 pages, 29 figures, and 3 tables. Submitted to Physical Review E. A copy with higher resolution figures is available at http://monsoon.harvard.edu/~hersch/papers.htm

Light intensity modulates the regulatory network of the shade avoidance response in Arabidopsis.

Plants such as Arabidopsis thaliana respond to foliar shade and neighbors who may become competitors for light resources by elongation growth to secure access to unfiltered sunlight. Challenges faced during this shade avoidance response (SAR) are different under a light-absorbing canopy and during neighbor detection where light remains abundant. In both situations, elongation growth depends on auxin and transcription factors of the phytochrome interacting factor (PIF) class. Using a computational modeling approach to study the SAR regulatory network, we identify and experimentally validate a previously unidentified role for long hypocotyl in far red 1, a negative regulator of the PIFs. Moreover, we find that during neighbor detection, growth is promoted primarily by the production of auxin. In contrast, in true shade, the system operates with less auxin but with an increased sensitivity to the hormonal signal. Our data suggest that this latter signal is less robust, which may reflect a cost-to-robustness tradeoff, a system trait long recognized by engineers and forming the basis of information theory