The economic and social significance of the Sales Tax

Thesis (M.B.A.)--Boston University, 194

The changing representational world of a young adolescent : father loss, developmental arrest and the therapeutic process.

Counseling PsychologyDoctor of Philosophy (PhD

Dijet resonance searches for dark matter mediators using the ATLAS detector

Dark matter is abundant in the universe, yet its composition and nature are unknown. If dark matter consists of new particles with nonzero interactions with Standard Model particles, it could be produced and detected or inferred by collider experiments. This thesis describes searches for dark matter models with new spin-1 force mediators coupling dark matter to quarks, using the ATLAS detector at the LHC. The studies target processes where a mediator is resonantly produced and decays back into two quarks, leaving two collimated jets of particles in the detector, and use \sqrt{s} = 13 \TeV data recorded by ATLAS between 2015 and 2017. No evidence for new physics was seen, and exclusion limits were set on benchmark models. Additionally, we describe how such limits can be reinterpreted in the contexts of other models to provide further constraints. In order to conduct these searches, well-calibrated jets are needed, as well as good understanding of detector performance. This thesis also describes several tools and studies aimed at improving the jet physics performance of ATLAS. In particular, methods for studying the jet energy calibration and resolution are presented

Seven Anion Comparison for the Center and West Hill Slope Systems in the Landscape Evolution Observatory (LEO) Project

The Landscape Evolution Observatory (LEO) consists of 3 theoretically identical, artificial hill slopes, the East, West, and Center slopes, aiming to investigate the movement of water, carbon, and energy. These slopes were designed to be identical in that they were all built to be the same size, and filled with the same amount of the same ‘soil’, which is actually granular basalt with loamy sand properties, with some small clay particle fractions to enhance its ability to hold water and for chemical weathering. With such a complex soil mixture, however, the geochemical differences between slopes at a given point can actually be quite significant. As the rain falls through these landscapes it is interacting with the different geochemistry, which naturally changes what is dissolved in the water. Through analyzing chemical differences from water samples collected from the different slopes, we can begin to develop a unique background for each hill slope, showing the ways in which they differ. To test this, a series of water collection syringes were distributed throughout the three different slopes at comparable collection points, where the water had already fallen through the landscape, so to be able to effectively compare the chemistries of those points on the slopes. This is critical to the project, as by better understanding the unique chemical characteristics of the individual slopes before further experimentation begins, effects that are coming from the experimental changes can be more effectively isolated from systematic differences. This project specifically focused on the comparison of 7 different anions, F-, Cl-, NO2-, Br-, NO3-, SO42-, PO43- , found in rainfall samples on the West and Center slopes. Concentrations of anions in water samples were found using Ion Chromatography. This study has shown that in terms of anion concentration, at comparable collection points, the slopes are far from identical

Sigma Models And The ADHM Construction Of Instantons

This paper is devoted to the construction of a family of linear sigma models with $(0,4)$ supersymmetry which should flow in the infrared to the stringy version of Yang-Mills instantons on ${\bf R}^4$. The family depends on the full set of expected parameters and is obtained by using the data that appear in the ADHM construction of instantons.Comment: 14 pp, harvma

Creating Jobs through Energy Efficiency Using Wisconsin's Successful Focus on Energy Program

The purpose of this project was to provide administrative and technical support for the completion of energy efficiency projects that reduce energy intensity and create or save Wisconsin industrial jobs. All projects have been completed. Details in the attached reports include project management, job development, and energy savings for each project

Peer navigators to promote engagement of homeless African Americans with serious mental illness in primary care

Homeless African Americans with serious mental illness experience higher rates of morbidity and mortality than adults with severe mental illness alone. Peer navigators, individuals with similar lived experiences, may help these individuals navigate the healthcare system to improve healthcare utilization. This study examined whether the Peer Navigator Program (PNP) improved scheduling and achieving healthcare appointments compared to treatment as usual (TAU) over the course of 12 months, including three periods within that timeframe: engagement (first three months), impact (middle six months), and maintenance (final six months). Results indicated no change during the first three months of the study, a significantly greater improvement in scheduled and achieved appointments for PNP compared to TAU during the middle six months, and maintenance of appointment change improvements over the final three months of the study. This research suggests peer navigators may offer a promising solution to barriers in utilizing the healthcare system for people with severe mental illness, especially those who may be homeless or from minority racial groups