The United States Military Academy Preparatory School (USMAPS), sometimes referred to as West Point Prep, is a preparatory school for the United States Military Academy (USMA). Located in West Point, New York, its official mission is "to provide academic, military and physical instruction in a moral-ethical military environment to prepare and motivate candidates for success at the United States Military Academy.
Abstract We present new findings about the relationship between marriage and socioeconomic background in the United States in the late 19th and early 20th centuries. Imputing the socioeconomic status of family of origin from first names, we document a socioeconomic gradient for women in the probability of marriage and the socioeconomic status of husbands, which widens over this period. Regional divergence in occupational structure explains half of the divergence in the probability of marriage, and most of the increase in marital sorting. Urbanization and the associated improvement in women’s labor market opportunities drive most of these differences.
Unraveling the complex associations between human phenotypes and molecular pathways can pave the way to improved health and performance, but faces a fundamental challenge: the measurable genes, proteins, and metabolites vastly outnumber the participants in even the largest studies, yielding spurious correlations. To address this, we developed PhenoMol, a bioinformatic framework that integrates comprehensive phenotypic data predictive of outcomes and reduces multi-omic dimensionality using graph theory constrained by prior biological knowledge. This approach generates biologically informed "expression circuits" to identify causal patterns. Applied to a deeply characterized healthy cohort, PhenoMol successfully predicted elite physical performance and outperformed regression models lacking network-based dimensionality reduction. Designed to be versatile and generalizable, PhenoMol enables studies across small and large populations to predict wellness, performance, and disease outcomes. The software is openly available to support future research in health, disease, and performance optimization.
This study provides a comparative analysis of energy production and greenhouse gas emissions from five modeled biogas dispositions (uncontrolled release, flaring, boilers, combined heat and power (CHP), and market purification for pipeline injection) for a small-scale (8710 m3 wastewater/day) wastewater treatment plant with anaerobic co-digestion of wastewater sludge, food scraps, and fats, oils, and grease. Using biogas production rates, electricity grid mix data, and thermal energy from natural gas, this study evaluated 100-year Global Warming Potential for each disposition. Analysis revealed that uncontrolled release resulted in the highest emissions (13,600 kg CO2-eq.), while market utilization shows the lowest emissions (486 kg CO2-eq.). Results also indicate that boilers are the most favorable disposition for thermal energy production, generating 22,305 MJ/day (8428 MJ/day beyond digester requirements). CHP produces a surplus of 4300 MJ/day (1190 kWh/day), offsetting 46
Optically power beaming projects have potential for many applications in the defense market. A unique opportunity to apply this technology is to extend the flight-time of a sUAS. This application creates a proof-of-concept design to extend a drone's flight-time using a high-power laser.
The shape of a shock wave stemming from localized blast can be altered based on the material properties and geometry of buffer materials, leading to an immense number of unique loads that can produce various limit states in engineering materials. Conventional techniques for recording pressures resulting from far-field blast loads cannot be used to capture the extremely high and nonuniform pressures of near-field blast loads, which creates challenges for understanding loading conditions and their influence on the subsequent response of engineering materials subjected to these loads. The research presented in this manuscript uses the classical Hugoniot jump equations and high-resolution numerical simulations to derive an experimental technique for characterizing and shaping shock waves stemming from near-field blast loads. Results of this study show that interface effects, wave attenuation, dispersion, and edge effects contribute to the shape of transmitted shock waves in solid media and heavily influence the subsequent response of engineering materials subjected to localized blast. Theoretical and numerical developments are confirmed by physical experiments demonstrating vastly different responses in engineering materials subjected to the same explosive but with different buffers intentionally used to control the wave shape. This technique provides researchers with the ability to intentionally tailor shock waves to generate purposeful wave profiles for investigating the mechanics and limit states of complex engineering materials at the extremely high strain rates seen in near-field blasts.
