Our research group is currently working to develop the first cross-culturally validated household water insecurity scale. In order to do this, we have partnered with numerous collaborators to implement the survey in diverse ecological settings. As part of the survey, participants are asked to recall how long it takes to...
Psychometric analyses can help illuminate how people approach clinical tests. To understand how health literacy (i.e., literacy for health information) might lead to biased assessment of emotional distress, we examined the psychometric properties of anxiety and depression questionnaires, using differential item functioning (DIF) analysis. Items were flagged for DIF if...
Using ab initio calculations, we discovered a quasi two-dimensional copper–bismuth nano sheet, which we call cubine. According to our predictions, single layers of cubine can be isolated from the recently reported high-pressure CuBi bulk material at an extremely low energetic cost, comparable to values to separate single layers of graphene...
The ideology scores of US Congress members over time, quantified from how similarly they voted on bills. I present an interactive visualization for the US Congress members’ ideology. The data used are ideology scores of US Congress members 1789-2015. The ideology scores are quantified from the Congress members’ voting records...
Objectives: Poor infant health is associated with lower wellbeing later in life. Food insecurity has been associated with higher rates of some morbidities in young children. However, this relationship has not been well studied in infants younger than six months or in Kenya. Thus, we sought to determine the relationship...
Numerical simulations have shown that black holes (BHs) have significant influence on the evolution of globular clusters (GCs), and therefore shape their observational features. Recently, a BH-main sequence star (MS) binary system has been observed in the Milky Way GC NGC 3201. Our group uses Cluster Monte Carlo (CMC) code...
A number of new satiric forms -- or emergent genres -- have exploded in popularity almost simultaneously in recent years, all markedly political, all incorporating the real into the mimetic in striking ways, and all straddling the line between satire and serious political dialogue. This dissertation focuses on three of...
New telecommunication techniques utilizing distinctive quantum properties, e.g., measurement uncertainties and entanglement, extend the capabilities of existing systems. Quantum cryptography, as an example, provides physical layer security enforced by fundamental physical laws, while modern cryptographic techniques rely on assumptions of intractability of certain mathematical problems with limited computational power.
Rapid...
A catalytic, multi-component coupling reaction for the synthesis of nitrogen-containing heterocycles has been developed, via the reaction of an imine, α-diazoester and unsaturated coupling partner in the presence of a copper(I) or rhodium(II) transition metal catalyst with excellent diastereo-selectivities and high yields. The transition metal-catalyzed decomposition of a diazo compound...
The use of processes based on microorganisms to produce fuels, monomers, and pharmaceuticals from renewable feedstocks is increasing today due to their environmental and economic advantages over petrochemical-based processes. In order to unlock the full potential of microorganisms to produce a sustainable industry centered on biosynthesis, an improved understanding of...