Ursinus College Alumni Journal, Spring 1945

In memoriam • President\u27s page • Commencement • Spring term opens • Forum speakers • Dramatics • Christmas festivities • Sports revue • Visitors date • Dances • Debating • Y.M. and Y.W. events • Operetta • Messages to the alumni • College presidents sponsor legislation • Ursinus is family tradition • News about ourselves • Necrology • Our war correspondents • Program for veterans • Ursinus honor roll • Men and women in the service • Alumni Association nomineeshttps://digitalcommons.ursinus.edu/alumnijournal/1024/thumbnail.jp

Ursinus College Alumni Journal, Winter 1945

Dedication • What kind of memorial? • Alumni Day, 1946 • President\u27s page • Ursinus celebrates 75th anniversary: Special convocation held • Commencement exercises • Opening exercises, 76th academic year • Ursinus College Woman\u27s Club plans many activities • Sports revue • Gold star men of Ursinus • Salutation • Our foreign correspondents • Letter to the alumni • College entertains Navy unit • Returned to civilian status • News about ourselves • Necrology • Alumni Association executive committee creates reserve fund • Specialist in weather forecasting • Honored men of Ursinushttps://digitalcommons.ursinus.edu/alumnijournal/1023/thumbnail.jp

Ursinus College Alumni Journal, Summer 1945

In memoriam • A word of appreciation • President\u27s page • Commencement activities • Report on the Loyalty Fund • Sports program • Faculty resignations and appointments • Students participate in full extra-curricular program • Summer term • Our war correspondents • Your officers\u27 letters • Honors to Ursinus alumni • Dr. Livingood: Consultant and author • Missing men reported safe • News about ourselves • Ursinus honor roll • Battle veterans wounded • In the service • Necrologyhttps://digitalcommons.ursinus.edu/alumnijournal/1025/thumbnail.jp

Ursinus College Alumni Journal, Summer 1946

Board of Directors encourage alumni participation • Alumni committees active • Dr. Johnson commencement speaker • President\u27s page • Directors plan for future • Alumni give $31,000 • Retirement plan • Five earn degrees • Missions secretary • Modern pioneer • Operations Africa • A Dean\u27s mailbox • That others may live • Dr. Miller retires • Seminary gets new head • Faculty and staff additions • Penfield winner • Dr. Garrett studies in France • News about ourselves • Commencement prizes • Challenge of Picalqui • Highlights in fall sports • Local Alumni Association meetings • News around town • Necrology • Summer conferences • College solves housing problem • Fall enrollment 700 • Alumni Association officershttps://digitalcommons.ursinus.edu/alumnijournal/1028/thumbnail.jp

Ursinus College Alumni Journal, Spring 1946

Farewells to Ursinus • Education for veterans • Alumni Day • President\u27s page • Faculty and staff changes announced • Exhibits to be shown Commencement week • College pastor retires after 18 years\u27 service • Loyalty Fund grows • Professor and Mrs. Sheeder to leave Ursinus • Enrollments remain at high peak • Warren K. Hess \u2731, elected Berks judge • Wounded veterans attend courses • Ursinus and World War II • Store displays mural of college • News from the campus • Athletic policy defined • Sports revue • Secretary\u27s letter • Ensminger \u2714, receives Legion of Merit medal • Former professor invents electronic computer • Control of nuclear energy • News about ourselves • Necrology • Dr. DeWire aided in atom bomb experiments • Alumni Association nomineeshttps://digitalcommons.ursinus.edu/alumnijournal/1027/thumbnail.jp

High-pressure transport properties of CeRu_2Ge_2

The pressure-induced changes in the temperature-dependent thermopower S(T) and electrical resistivity \rho(T) of CeRu_2Ge_2 are described within the single-site Anderson model. The Ce-ions are treated as impurities and the coherent scattering on different Ce-sites is neglected. Changing the hybridisation \Gamma between the 4f-states and the conduction band accounts for the pressure effect. The transport coefficients are calculated in the non-crossing approximation above the phase boundary line. The theoretical S(T) and \rho(T) curves show many features of the experimental data. The seemingly complicated temperature dependence of S(T) and \rho(T), and their evolution as a function of pressure, is related to the crossovers between various fixed points of the model.Comment: 9 pages, 10 figure

Sensitivity of solar off-limb line profiles to electron density stratification and the velocity distribution anisotropy

The effect of the electron density stratification on the intensity profiles of the H I Ly-$\alpha$ line and the O VI and Mg X doublets formed in solar coronal holes is investigated. We employ an analytical 2-D model of the large scale coronal magnetic field that provides a good representation of the corona at the minimum of solar activity. We use the mass-flux conservation equation to determine the outflow speed of the solar wind at any location in the solar corona and take into account the integration along the line of sight (LOS). The main assumption we make is that no anisotropy in the kinetic temperature of the coronal species is considered. We find that at distances greater than 1 Rsun from the solar surface the widths of the emitted lines of O VI and Mg X are sensitive to the details of the adopted electron density stratification. However, Ly-$\alpha$, which is a pure radiative line, is hardly affected. The calculated total intensities of Ly-$\alpha$ and the O VI doublet depend to a lesser degree on the density stratification and are comparable to the observed ones for most of the considered density models. The widths of the observed profiles of Ly-$\alpha$ and Mg X are well reproduced by most of the considered electron density stratifications, while for the O VI doublet only few stratifications give satisfying results. The densities deduced from SOHO data result in O VI profiles whose widths and intensity ratio are relatively close to the values observed by UVCS although only isotropic velocity distributions are employed. These density profiles also reproduce the other considered observables with good accuracy. Thus the need for a strong anisotropy of the velocity distribution (i.e. a temperature anisotropy) is not so clear cut as previous investigations of UVCS data suggested. ...Comment: 11 pages; 11 figure

BESPRECHUNGEN COMPTES RENDUS - REVIEWS

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72613/1/j.1467-6435.1957.tb00243.x.pd

Signatures of the slow solar wind streams from active regions in the inner corona

Some of local sources of the slow solar wind can be associated with spectroscopically detected plasma outflows at edges of active regions accompanied with specific signatures in the inner corona. The EUV telescopes (e.g. SPIRIT/CORONAS-F, TESIS/CORONAS-Photon and SWAP/PROBA2) sometimes observed extended ray-like structures seen at the limb above active regions in 1MK iron emission lines and described as "coronal rays". To verify the relationship between coronal rays and plasma outflows, we analyze an isolated active region (AR) adjacent to small coronal hole (CH) observed by different EUV instruments in the end of July - beginning of August 2009. On August 1 EIS revealed in the AR two compact outflows with the Doppler velocities V =10-30 km/s accompanied with fan loops diverging from their regions. At the limb the ARCH interface region produced coronal rays observed by EUVI/STEREO-A on July 31 as well as by TESIS on August 7. The rays were co-aligned with open magnetic field lines expanded to the streamer stalks. Using the DEM analysis, it was found that the fan loops diverged from the outflow regions had the dominant temperature of ~1 MK, which is similar to that of the outgoing plasma streams. Parameters of the solar wind measured by STEREO-B, ACE, WIND, STEREO-A were conformed with identification of the ARCH as a source region at the Wang-Sheeley-Arge map of derived coronal holes for CR 2086. The results of the study support the suggestion that coronal rays can represent signatures of outflows from ARs propagating in the inner corona along open field lines into the heliosphere.Comment: Accepted for publication in Solar Physics; 31 Pages; 13 Figure

Local fluctuations in quantum critical metals

We show that spatially local, yet low-energy, fluctuations can play an essential role in the physics of strongly correlated electron systems tuned to a quantum critical point. A detailed microscopic analysis of the Kondo lattice model is carried out within an extended dynamical mean-field approach. The correlation functions for the lattice model are calculated through a self-consistent Bose-Fermi Kondo problem, in which a local moment is coupled both to a fermionic bath and to a bosonic bath (a fluctuating magnetic field). A renormalization-group treatment of this impurity problem--perturbative in $\epsilon=1-\gamma$, where $\gamma$ is an exponent characterizing the spectrum of the bosonic bath--shows that competition between the two couplings can drive the local-moment fluctuations critical. As a result, two distinct types of quantum critical point emerge in the Kondo lattice, one being of the usual spin-density-wave type, the other ``locally critical.'' Near the locally critical point, the dynamical spin susceptibility exhibits $\omega/T$ scaling with a fractional exponent. While the spin-density-wave critical point is Gaussian, the locally critical point is an interacting fixed point at which long-wavelength and spatially local critical modes coexist. A Ginzburg-Landau description for the locally critical point is discussed. It is argued that these results are robust, that local criticality provides a natural description of the quantum critical behavior seen in a number of heavy-fermion metals, and that this picture may also be relevant to other strongly correlated metals.Comment: 20 pages, 12 figures; typos in figure 3 and in the main text corrected, version as publishe