David Walker’s Appeal and Everyday Abolition

Titled “David Walker’s Appeal and Everyday Abolition” this thesis uses book history methodologies to reconstruct the pamphlet’s overlooked uses. Where many scholars highlight radical and revolutionary tendencies, I explore archival evidence that seems unassimilable to these critical positions. Instead, this thesis mobilizes marginalia, gift exchanges, archival acquisitions, and printing records to paint a different reception history of Walker’s Appeal. I suggest that this evidence points toward a non-sensational, ordinary side of Walker’s pamphlet. By considering the variegated “situatedness” of Walker’s Appeal, the thesis probes a larger idea of “everyday abolition.” This capacious term gathers ordinary, minor, and non-sensational abolitionist practices. “David Walker’s Appeal and Everyday Abolition” argues that ordinary practices—gifting, preservation, private reading—constitute an understudied, undertheorized, and politically significant elements of antebellum literary history

Automation of the G/T Characterization Measurements for DSS-17

Gain over System Noise Temperature (G/T) is a metric commonly used in radio frequency (RF) engineering to measure the performance of an antenna against the amount of noise contributing to the receiver\u27s signal caused by its internal hardware. While the gain of an antenna is typically inferred geometrically by comparing signal strength of a given antenna to that of an isotropic antenna, system noise temperature must be found experimentally by calibrating the antenna to a black body radiator (in this case, the moon), and comparing the measured power on the black body to that when the antenna is aimed at cold sky. This comparison is measured several times and followed by a sweep in elevation to generate a tip curve which yields a measurement of atmospheric contribution to the signal. From here, G/T can be calculated. The traditional process of measuring system noise temperature introduces room for user error. Writing software which automates the G/T measurement procedure ensures that more accurate data is obtained and reduces the possibility of user error in the procedure. Using Systems Tool Kit (STK) to model Morehead State University\u27s 21-meter deep space antenna, a privately-owned affiliated node on the Deep Space Network[1], as well as Python programming to generate pointing predicts[2], this automation will command DSS-17 to point on and off the moon without the need for users to input pointing commands during the test. This automation will function for both the X-band and S-band frequency feeds utilized on the antenna

Depression Care Management: Can Employers Purchase Improved Outcomes?

Fourteen vendors are currently selling depression care management products to US employers after randomized trials demonstrate improved work outcomes. The research team interviewed 10 (71.4%) of these vendors to compare their products to four key components of interventions demonstrated to improve work outcomes. Five of 10 depression products incorporate all four key components, three of which are sold by health maintenance organizations (HMOs); however, HMOs did not deliver these components at the recommended intensity and/or duration. Only one product delivered by a disease management company delivered all four components of care at the recommended intensity and duration. This “voltage drop,” which we anticipate will increase with product implementation, suggests that every delivery system should carefully evaluate the design of its depression product before implementation for its capacity to deliver evidence-based care, repeating these evaluations as new evidence emerges

Traveling Waves for Conservation Laws with Cubic Nonlinearity and BBM Type Dispersion

Scalar conservation laws with non-convex fluxes have shock wave solutions that violate the Lax entropy condition. In this paper, such solutions are selected by showing that some of them have corresponding traveling waves for the equation supplemented with dissipative and dispersive higher-order terms. For a cubic flux, traveling waves can be calculated explicitly for linear dissipative and dispersive terms. Information about their existence can be used to solve the Riemann problem, in which we find solutions for some data that are different from the classical Lax-Oleinik construction. We consider dispersive terms of a BBM type and show that the calculation of traveling waves is somewhat more intricate than for a KdV-type dispersion. The explicit calculation is based upon the calculation of parabolic invariant manifolds for the associated ODE describing traveling waves. The results extend to the p-system of one-dimensional elasticity with a cubic stress-strain law.Comment: 17 pages, 5 figure

Key challenges for the surveillance of respiratory viruses: transitioning out of the acute phase of the SARS-CoV-2 pandemic

To support the ongoing management of viral respiratory diseases, many countries are moving towards an integrated model of surveillance for SARS-CoV-2, influenza, and other respiratory pathogens. While many surveillance approaches catalysed by the COVID-19 pandemic provide novel epidemiological insight, continuing them as implemented during the pandemic is unlikely to be feasible for non-emergency surveillance, and many have already been scaled back. Furthermore, given anticipated co-circulation of SARS-CoV-2 and influenza, surveillance activities in place prior to the pandemic require review and adjustment to ensure their ongoing value for public health. In this perspective, we highlight key challenges for the development of integrated models of surveillance. We discuss the relative strengths and limitations of different surveillance practices and studies, their contribution to epidemiological assessment, forecasting, and public health decision making

Measuring the Density of States of the Inner and Outer Wall of Double-Walled Carbon Nanotubes

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).The combination of ultraviolet photoelectron spectroscopy and metastable helium induced electron spectroscopy is used to determine the density of states of the inner and outer coaxial carbon nanotubes. Ultraviolet photoelectron spectroscopy typically measures the density of states across the entire carbon nanotube, while metastable helium induced electron spectroscopy measures the density of states of the outermost layer alone. The use of double-walled carbon nanotubes in electronic devices allows for the outer wall to be functionalised whilst the inner wall remains defect free and the density of states is kept intact for electron transport. Separating the information of the inner and outer walls enables development of double-walled carbon nanotubes to be independent, such that the charge transport of the inner wall is maintained and confirmed whilst the outer wall is modified for functional purposes.This research received no external funding

Dietary pectic glycans are degraded by coordinated enzyme pathways in human colonic Bacteroides.

The major nutrients available to human colonic Bacteroides species are glycans, exemplified by pectins, a network of covalently linked plant cell wall polysaccharides containing galacturonic acid (GalA). Metabolism of complex carbohydrates by the Bacteroides genus is orchestrated by polysaccharide utilization loci (PULs). In Bacteroides thetaiotaomicron, a human colonic bacterium, the PULs activated by different pectin domains have been identified; however, the mechanism by which these loci contribute to the degradation of these GalA-containing polysaccharides is poorly understood. Here we show that each PUL orchestrates the metabolism of specific pectin molecules, recruiting enzymes from two previously unknown glycoside hydrolase families. The apparatus that depolymerizes the backbone of rhamnogalacturonan-I is particularly complex. This system contains several glycoside hydrolases that trim the remnants of other pectin domains attached to rhamnogalacturonan-I, and nine enzymes that contribute to the degradation of the backbone that makes up a rhamnose-GalA repeating unit. The catalytic properties of the pectin-degrading enzymes are optimized to protect the glycan cues that activate the specific PULs ensuring a continuous supply of inducing molecules throughout growth. The contribution of Bacteroides spp. to metabolism of the pectic network is illustrated by cross-feeding between organisms.This work was supported in part by an Advanced Grant from the European Research Council (Grant No. 322820) awarded to H.J.G. and B.H. supporting A.S.L., D.N., A.C. and N.T., a Wellcome Trust Senior Investigator Award to H.J.G. (grant No. WT097907MA) that supported J.B. and E.C.L. a European Union Seventh Framework Initial Training Network Programme entitled the “WallTraC project” (Grant Agreement number 263916) awarded to M-C.R. and H.J.G, which supported X.Z. and J.S. The Biotechnology and Biological Research Council project ‘Ricefuel’ (grant numbers BB/K020358/1) awarded to H.J.G. supported A.L

The great leap from earth to heaven: The evolution of ballet and costume in England and France in the eighteenth century

The evolution of classical ballet from its accepted origins as one method of displaying status and aristocratic power in Renaissance Italy to its Romantic form, featuring professional ballerinas in white costumes dancing en pointe, took place largely during the long eighteenth century. This article discusses this transformation from the dual perspectives of choreography and costume by using the premise that these two vital elements in the presentation of ballet were co-dependent, each prompting the other to develop and evolve. Concentrating on Paris and London, it examines the relationship between court dress, fashion and theatre costume, and how this affected both the choreography and the style of dance throughout the long eighteenth century. © The Costume Society 2016

How to sequence 10,000 bacterial genomes and retain your sanity: an accessible, efficient and global approach

Non-typhoidal Salmonella(NTS)are typically associated with enterocolitis and linked to the industrialisation of food production. In recent years, NTS has been associated with invasive disease (iNTS disease) causing an estimated 77,000 deaths each year worldwide; 80% of mortality occurs in sub-Saharan Africa. New clades of S. Typhimurium and S. Enteritidis have been identified, which are characterised by genomic degradation, altered prophage repertoires and novel multidrug resistant plasmids. To understand how these clades are contributing to the burden and severity of iNTS disease, it is crucial to expand genome-based surveillance to cover more countries, and incorporate historical isolates to generate an evolutionary timeline of the development of iNTS. We developedand validateda robust and inexpensive method for large-scale collection and sequencing of bacterial genomes. The “10,000 Salmonella genomes” project established a worldwide research collaboration to generate information relevant to the epidemiology, drug resistance and virulence factors of Salmonellae using a whole-genome sequencing approach. By streamlining collection of isolates and developing an efficient logistics pipeline, we gathered 10,419 clinical and environmental isolates from collections in low and middle-income countries within six months. Genome sequences are now available for isolates from 51 countries/territories dating from 1949 to 2017, with ~80 % representing African and Latin-American datasets. Our method can be applied to other large sample collections that require maximisation of resources within a limited timeframe. Detailed genome analyses are in progress and it is hoped that the resulting data will contribute to public health control strategies in low and middle-income countries