Oral History, Mobile Curation, and African American Memory in Cleveland\u27s Fairfax and Glenville Neighborhoods

Fairfax and Glenville are historic neighborhoods with signal importance in the African American community. Too often these neighborhoods are subjected to a simplistic declension narrative that pins their heyday in the 1920s-50s and traces their decline to the convulsive riots of the late 1960s and the subsequent loss of population to the suburbs as middle-class African Americans mirrored “white flight.” Our team conducted over 40 interviews, created story clips, and curated several new sites for the Cleveland Historical website and mobile application. Our research, rooted in oral history, exposed an important post-1968 counternarrative of resilience. Our oral histories demonstrate a continuing thread of black/white/Jewish collaborative approaches to community issues, particularly in Glenville, as well as the continuing relevance of the “old neighborhoods” for work, play, and worship long after middle-class suburban flight. They also reveal a selective memory that privileges personal connections to the neighborhood through kinship, friendship, faith, and social activism, yielding a “sense of place” that is not always tied to prevailing assumptions about the neighborhoods.https://engagedscholarship.csuohio.edu/u_poster_2014/1007/thumbnail.jp

Enhanced Raman sideband cooling of caesium atoms in a vapour-loaded magneto-optical trap

We report enhanced three-dimensional degenerated Raman sideband cooling (3D DRSC) of caesium (Cs) atoms in a standard single-cell vapour-loaded magneto-optical trap. Our improved scheme involves using a separate repumping laser and optimized lattice detuning. We load 1.5 × 107 atoms into the Raman lattice with a detuning of −15.5 GHz (to the ground F = 3 state). Enhanced 3D DRSC is used to cool them from 60 µK to 1.7 µK within 12 ms and the number of obtained atoms is about 1.2 × 107. A theoretical model is proposed to simulate the measured number of trapped atoms. The result shows good agreement with the experimental data. The technique paves the way for loading a large number of ultracold Cs atoms into a crossed dipole trap and efficient evaporative cooling in a single-cell system

PACS: 32.30.-r, 32.60.+i, 32.70

Abstract: We have measured light shifts, also known as AC Stark shifts, as a function of laser intensity in cold Rubidium atoms by observing sub-natural linewidth gain and loss features in the transmission spectrum of a weak probe beam passing through the atomic sample. The observed energy-level shifts for atoms in a magneto-optical trap (MOT) are found to be consistently higher than that obtained in optical molasses (i.e., when the magnetic field gradient in the MOT is turned off). Using a simple model of a multilevel Rubidium atom interacting with pump and probe beams, we have calculated the theoretical light shift as a function of intensity. A comparison of these calculated values with the light shift data obtained for molasses reveals good agreement between experiment and theory. Further, our model elucidates the role of the Zeeman shifts arising from the magnetic field gradient in the observed probe transmission spectrum for the MOT. A qualitative plot of the transmission spectrum of a probe beam through a fictitious sample of cold J = 1 → J = 2 atoms showing probe absorption at the sum of the pump frequency ω pump and δ , where δ is the difference of the light shifts between the |J = 1,mJ = 0 and the |J = 1,mJ = ± 1 ground state Zeeman sublevels. Probe gain is depicted at ω pump -δ . Se

A List of The Species of Catocala Taken at Groton and Winchendon, Massachusetts

Volume: 12Start Page: 96End Page: 9

Oral History, Mobile Curation, and African American Memory in Cleveland\u27s Fairfax and Glenville Neighborhoods

Fairfax and Glenville are historic neighborhoods with signal importance in the African American community. Too often these neighborhoods are subjected to a simplistic declension narrative that pins their heyday in the 1920s-50s and traces their decline to the convulsive riots of the late 1960s and the subsequent loss of population to the suburbs as middle-class African Americans mirrored “white flight.” Our team conducted over 40 interviews, created story clips, and curated several new sites for the Cleveland Historical website and mobile application. Our research, rooted in oral history, exposed an important post-1968 counternarrative of resilience. Our oral histories demonstrate a continuing thread of black/white/Jewish collaborative approaches to community issues, particularly in Glenville, as well as the continuing relevance of the “old neighborhoods” for work, play, and worship long after middle-class suburban flight. They also reveal a selective memory that privileges personal connections to the neighborhood through kinship, friendship, faith, and social activism, yielding a “sense of place” that is not always tied to prevailing assumptions about the neighborhoods.https://engagedscholarship.csuohio.edu/u_poster_2014/1007/thumbnail.jp