Comment on "Electromagnetic dissociation of ^8B and the astrophysical S-factor for ^7Be(p,gamma)^8B"

Recently, Davids and Typel recommended a "low" value of S_{17}(0) based on fits to published direct and Coulomb dissociation data, in which they excluded the precise result of Junghans et al. We show that their statistical analysis is incorrect, due to a substantial underestimate of the experimental uncertainties, and leads to conclusions that are not supported by a proper analysis.Comment: submitted to Phys. Rev.

Quantum Transport and Shot Noise in Graphene-Boron Nitride Heterostructures

This thesis presents experiments on the electronic transport properties of mesoscopic graphene samples at low temperature. Due to the residue free encapsulation in hexagonal boron nitride, the mean free path of charge carriers is in the order of the geometric sample dimensions. High frequency shot noise was measured in parallel to the conductance under various experimental conditions, including proximity induced superconductivity and high magnetic fields

Semantic collisions at the intertextual crossroads:: a diachronic and synchronic study of Romans 9:30-10:13

This thesis examines Romans 9:30-10:13 with a concentration on Paul's citations of the Old Testament. A critical review of the theory of intertextuality, including a critique of its application by Richard Hays, begins an adaptation of the theory for a methodology which is labelled herein as Intertextual Semantics. Intertextual Semantics describes the meaning of the text through its points of continuity between itself and its source, but also its discontinuity and the processes which have contributed to their lexical, syntactical, discursive, rhetorical, and cultural differences. Transformative factors may be evident from a synchronic perspective, but when considering Paul’s historical position in relation to Judaism and Israelite religion, a diachronic perspective is also valuable. The thesis devotes considerable space to the history of the texts which Paul quotes in Romans 9:30-10:13. It contributes new readings of Isaiah 28:16, Leviticus 18:5, and Deuteronomy 30:12-14 in their respective literary and historical contexts. From such 'original' contexts to other allusions or quotations in the Old Testament or in non-canonical Second Temple Jewish literature or in other New Testament writings, these intertexts are followed and described as part of this diachronic analysis. Disrupting or colliding with the continuity of meaning across changes of time, languages, and cultures are the exigencies facing each new generation. In the synchronic analysis, and in response to the relative neglect that Romans 10 suffers in relation to chs. 9 and 11, this study demonstrates that concerted attention to Romans 10 pays dividends for inquiries into the coherence, purpose, and function of chs.9-11 as well as for important topics such as Paul's conception of his own ministry, comparisons of Pauline religion with historical Israelite religion, and rhetoric in this letter

Administrative Law

This article is a report of certain developments during the last two years relating to the Virginia Administrative Process Act ( the VAPA\u27\u27), which governs rulemaking and adjudication of cases by state agencies as well as judicial review of both

CONTROLS ON THERMAL DISCHARGE IN YELLOWSTONE NATIONAL PARK, WYOMING

Controls on Thermal Discharge in Yellowstone National Park, Wyoming Director: Nancy W. Hinman Significant fluctuations in discharge occur in hot springs in Yellowstone National Park on a seasonal to decadal scale (Ingebritsen et al., 2001) and an hourly scale (Vitale, 2002). The purpose of this study was to determine the interval of the fluctuations in discharge and to explain what causes those discharge patterns in three thermally influenced streams in Yellowstone National Park. By monitoring flow in these streams, whose primary source of input is thermal discharge, we were able to find several significant patterns of discharge fluctuations. Patterns were found by using two techniques of spectral analysis. The spectral analyses completed involved using the program “R” as well as Microsoft Excel, both of which use Fourier transforms. The Fourier transform is a linear operator that identifies frequencies in the original function. Stream flow data were collected using a FloDar open channel flow monitor. The flow meter collected data at15-minute intervals at White Creek and Rabbit Creek for a period of approximately two weeks each during the Fall. Flow data were also used from 15-minute data interval from a USGS gaging station at Tantalus Creek. Patterns of discharge fluctuation were found in each stream. By comparing spectral analysis results of flow data with spectral analysis of published tide data and barometric pressure data, connections were drawn between fluctuations in tidal and barometric-pressure patterns and flow patterns. Also, visual comparisons used to identify potential correspondence with earthquakes and precipitation events. At Tantalus Creek, patterns were affected only by barometric pressure changes. At White Creek, one pattern was attributed to barometric pressure fluctuations, and another pattern was found that could be associated with earth-tide forces. At Rabbit Creek, these patterns were absent. A pattern at 8.55 hours, which could not be attributed to barometric pressure or earth tide forces, was found at Rabbit and White Creeks. The 8.55 hour pattern in discharge found at both Rabbit and White Creeks may suggest a physical link between the sites, which are close (2.5 km). The time pattern could be a result of a shared hydrothermal aquifer, convectively heating and discharging at both streams. However, the common time pattern could also be the result of independent factors, which coincidentally caused a similar time pattern

Analysis Methods for Gamma-ray Astronomy

The launch of the Fermi satellite in 2008, with its Large Area Telescope (LAT) on board, has opened a new era for the study of gamma-ray sources at GeV ($10^9$ eV) energies. Similarly, the commissioning of the third generation of imaging atmospheric Cherenkov telescopes (IACTs) - H.E.S.S., MAGIC, and VERITAS - in the mid-2000's has firmly established the field of TeV ($10^{12}$ eV) gamma-ray astronomy. Together, these instruments have revolutionised our understanding of the high-energy gamma-ray sky, and they continue to provide access to it over more than six decades in energy. In recent years, the ground-level particle detector arrays HAWC, Tibet, and LHAASO have opened a new window to gamma rays of the highest energies, beyond 100 TeV. Soon, next-generation facilities such as CTA and SWGO will provide even better sensitivity, thus promising a bright future for the field. In this chapter, we provide a brief overview of methods commonly employed for the analysis of gamma-ray data, focusing on those used for Fermi-LAT and IACT observations. We describe the standard data formats, explain event reconstruction and selection algorithms, and cover in detail high-level analysis approaches for imaging and extraction of spectra, including aperture photometry as well as advanced likelihood techniques.Comment: 56 pages, 12 figures. Invited chapter for "Handbook of X-ray and Gamma-ray Astrophysics" (Eds. C. Bambi and A. Santangelo, Springer Singapore, expected in 2023