Oral History Interview: Clarence Donnely

This interview is one of several in the Oral History of Appalachia collection in which the primary focus of conversation is national and world history. This interview contains little autobiographical information. However, it is apparent that Reverend Donnely has acquired an extensive and reputable knowledge of West Virginia culture and history. He mentions having published a history of Fayette County, West Virginia and discusses the numerous West Virginia artifacts he has collected. Other topics discussed include the career of Morris Harvey, the burning of the state capitol building in 1921, slavery and Blackes in the early coal mines.https://mds.marshall.edu/oral_history/1129/thumbnail.jp

Harnack Inequalities on Manifolds with Boundary and Applications

On a large class of Riemannian manifolds with boundary, some dimension-free Harnack inequalities for the Neumann semigroup is proved to be equivalent to the convexity of the boundary and a curvature condition. In particular, for $p_t(x,y)$ the Neumann heat kernel w.r.t. a volume type measure $\mu$ and for $K$ a constant, the curvature condition \Ric-\nn Z\ge K together with the convexity of the boundary is equivalent to the heat kernel entropy inequality \int_M p_t(x,z)\log \ff{p_t(x,z)}{p_t(y,z)} \mu(\d z)\le \ff{K\rr(x,y)^2}{2(\e^{2Kt}-1)}, t>0, x,y\in M, where \rr is the Riemannian distance. The main result is partly extended to manifolds with non-convex boundary and applied to derive the HWI inequality.Comment: 24 page

Enabling Modular Autonomous Feedback-Loops in Materials Science through Hierarchical Experimental Laboratory Automation and Orchestration

Materials acceleration platforms (MAPs) operate on the paradigm of integrating combinatorial synthesis, high-throughput characterization, automatic analysis, and machine learning. Within a MAP, one or multiple autonomous feedback loops may aim to optimize materials for certain functional properties or to generate new insights. The scope of a given experiment campaign is defined by the range of experiment and analysis actions that are integrated into the experiment framework. Herein, the authors present a method for integrating many actions within a hierarchical experimental laboratory automation and orchestration (HELAO) framework. They demonstrate the capability of orchestrating distributed research instruments that can incorporate data from experiments, simulations, and databases. HELAO interfaces laboratory hardware and software distributed across several computers and operating systems for executing experiments, data analysis, provenance tracking, and autonomous planning. Parallelization is an effective approach for accelerating knowledge generation provided that multiple instruments can be effectively coordinated, which the authors demonstrate with parallel electrochemistry experiments orchestrated by HELAO. Efficient implementation of autonomous research strategies requires device sharing, asynchronous multithreading, and full integration of data management in experimental orchestration, which to the best of the authors’ knowledge, is demonstrated for the first time herein

μ\mu-ee conversion in nuclei and Z′^\prime physics

Together with the existence of new neutral gauge bosons, models based on extended gauge groups (rank $> 4$) often predict also new charged fermions. A mixing of the known fermions with new states with {\it exotic} weak-isospin assignments (left-handed singlets and right-handed doublets) will induce tree level flavour changing neutral interactions mediated by $Z$ exchange, while if the mixing is only with new states with {\it ordinary} weak-isospin assignments, the flavour changing neutral currents are mainly due to the exchange of the lightest new neutral gauge boson $Z^\prime$. We show that the present experimental limits on $\mu-e$ conversion in nuclei give a nuclear-model-independent bound on the $Z$-$e$-$\mu$ vertex which is twice as strong as that obtained from $\mu\to e e e$. In the case of E$_6$ models these limits provide quite stringent constraints on the $Z^\prime$ mass and on the $Z-Z^\prime$ mixing angle. We point out that the proposed experiments to search for $\mu-e$ conversion in nuclei have good chances to find evidence of lepton flavour violation, either in the case that new exotic fermions are present at the electroweak scale, or if a new neutral gauge boson $Z^\prime$ of E$_6$ origin lighter than a few TeV exists.Comment: Plain Tex, 24 pages, + 2 PostScript figure appended after \bye (and available upon request), UM-TH 93--08, FTUV 93-1

Una mirada al carcinoma de próstata desde la Atención Primaria de Salud

Introducción: la neoplasia de próstata se mantiene de manera asintomática por varios años y su historia natural no está bien esclarecida. Objetivo: describir la situación clínica epidemiológica del cáncer de próstata en pacientes mayores de 40 años. Método: se realizó un estudio observacional, descriptivo, prospectivo en el consejo popular Parque, perteneciente al Policlínico Juana Naranjo León, en el período 2020- 2022. La población de estudio estuvo conformada por 143 pacientes mayores de 40 años y la muestra por 31 pacientes con criterios de inclusión, por muestreo no probabilístico intencional. utilizaron métodos deivel teórico, empírico y estadístico. Resultados: predominaron las edades entre 58 años a 67 años y los factores de riesgo como la raza mestiza, el tabaquismo y el sedentarismo. Predominaron los pacientes asintomáticos ya que es una enfermedad de curso solapado, en los exámenes complementarios el PSA en los pacientes que no se encontraban alterados, siendo el tacto rectal la piedra angular de sospecha esta enfermedad, fueron evaluados por urología el 70, 9 % el 29, 1 % continua su seguimiento en la atención primaria de salud. Conclusiones: en el estudio predominan las edades más avanzadas en convergencias con los factores de riesgo como la raza mestiza, el tabaquismo y el sedentarismo. Siendo el cuadro clínico asintomático el más notado, así como el tacto rectal el examen de excelencia, piedra angular de sospecha esta enfermedad, quedando evaluada y en seguimientos la totalidad de la población en estudio

Nodal domains of Maass forms I

This paper deals with some questions that have received a lot of attention since they were raised by Hejhal and Rackner in their 1992 numerical computations of Maass forms. We establish sharp upper and lower bounds for the $L^2$-restrictions of these forms to certain curves on the modular surface. These results, together with the Lindelof Hypothesis and known subconvex $L^\infty$-bounds are applied to prove that locally the number of nodal domains of such a form goes to infinity with its eigenvalue.Comment: To appear in GAF

Propagation of short lightpulses in microring resonators: ballistic transport versus interference in the frequency domain

The propagation of short lightpulses in waveguiding structures with optical feedback, in our case optical microresonators, has been studied theoretically and experimentally. It appears that, dependent on the measurement set-up, ballistic transport or interference in the time domain of fs and ps laser pulses can be observed. The experiments are analyzed in terms of characteristic time scales of the source, the waveguide device and the detector arrangement and are related to Heisenberg's uncertainty principle. Based on this analysis a criterion is given for the upper bitrate for error free data transmission through optical microresonators

Photo- and Electro-Disintegration of 3He at Threshold and pd Radiative Capture

The present work reports results for: pd radiative capture observables measured at center-of-mass (c.m.) energies in the range 0--100 keV and at 2 MeV by the TUNL and Wisconsin groups, respectively; contributions to the Gerasimov-Drell-Hearn (GDH) integral in 3He from the two- up to the three-body breakup thresholds, compared to experimental determinations by the TUNL group in this threshold region; longitudinal, transverse, and interference response functions measured in inclusive polarized electron scattering off polarized 3He at excitation energies below the threshold for breakup into ppn, compared to unpolarized longitudinal and transverse data from the Saskatoon group. The calculations are based on a realistic Hamiltonian with two- and three-nucleon interactions and a realistic current operator, including one- and two-body components. The theoretical predictions obtained by including only one-body currents are in violent disagreement with data. These differences between theory and experiment are, to a large extent, removed when two-body currents are taken into account, although some rather large discrepancies remain in the c.m. energy range 0--100 keV, particularly for the pd differential cross section and tensor analyzing power at small angles, and contributions to the GDH integral. A rather detailed analysis indicates that these discrepancies have, in large part, a common origin, and can be traced back to an excess strength obtained in the theoretical calculation of the E1 reduced matrix element associated with the pd channel having L,S,J=1,1/2,3/2. It is suggested that this lack of E1 strength observed experimentally might have implications for the nuclear interaction at very low energies. Finally, the validity of the long-wavelength approximation for electric dipole transitions is discussed.Comment: 47 pages RevTex file, 10 PostScript figures, submitted to Phys. Rev.