The effect on the management of business of the Fair Labor Standards Act, as amended of 1949.

Thesis (M.B.A.)--Boston Universit

I\u27ve a Shooting - Box in Scotland

https://digitalcommons.library.umaine.edu/mmb-vp/4634/thumbnail.jp

Shaped Pupil Lyot Coronagraphs: High-Contrast Solutions for Restricted Focal Planes

Coronagraphs of the apodized pupil and shaped pupil varieties use the Fraunhofer diffraction properties of amplitude masks to create regions of high contrast in the vicinity of a target star. Here we present a hybrid coronagraph architecture in which a binary, hard-edged shaped pupil mask replaces the gray, smooth apodizer of the apodized pupil Lyot coronagraph (APLC). For any contrast and bandwidth goal in this configuration, as long as the prescribed region of contrast is restricted to a finite area in the image, a shaped pupil is the apodizer with the highest transmission. We relate the starlight cancellation mechanism to that of the conventional APLC. We introduce a new class of solutions in which the amplitude profile of the Lyot stop, instead of being fixed as a padded replica of the telescope aperture, is jointly optimized with the apodizer. Finally, we describe shaped pupil Lyot coronagraph (SPLC) designs for the baseline architecture of the Wide-Field Infrared Survey Telescope-Astrophysics Focused Telescope Assets (WFIRST-AFTA) coronagraph. These SPLCs help to enable two scientific objectives of the WFIRST-AFTA mission: (1) broadband spectroscopy to characterize exoplanet atmospheres in reflected starlight and (2) debris disk imaging.Comment: 41 pages, 15 figures; published in the JATIS special section on WFIRST-AFTA coronagraph

Interiors : works by Gregor Bell, Geoff Kleem, Ted Riggs, Derek Smith, Alex Wanders, Geoff Weary

Interiors : works by Gregor Bell, Geoff Kleem, Ted Riggs, Derek Smith, Alex Wanders, Geoff Wear

The Ethno- and Research History of the Lake Louise Field Station, Valdosta State University, Valdosta, GA

The history of the Lake Louise Field Station, from its 1951 purchase by George Leiby to its acquisition in 2009 by Valdosta State University, provides an interesting and varied look into the stewardship critical to teaching and research and the role played by the station in the development of the fields of paleoecology, paleotempestology and ethnohistory. During this 58-year period several individuals played critical roles in the development of this 76.9 hectare field station as a natural area for teaching and research. Notable among them were George and Louise Leiby who, working with Leo Lorenzo and Clyde Connell, set aside the station as a natural area for teaching and research. From the 1960s to the present, WA Watts, H Grissino-Mayer, J Tepper, D Hyatt, and J Pascarella and others have conducted research that has provided critical insight into the history and ecology of the area extending to 47,000 BP

Hall coefficient and Hc2 in underdoped LaFeAsO0.95F0.05

The electrical resistivity and Hall coefficient of LaFeAsO0.95F0.05 polycrystalline samples were measured in pulsed magnetic fields up to m0H = 60 T from room temperature to 1.5 K. The resistance of the normal state shows a negative temperature coefficient (dr/dT < 0) below 70 K for this composition, indicating insulating ground state in underdoped LaFeAsO system in contrast to heavily doped compound. The charge carrier density obtained from Hall effect can be described as constant plus a thermally activated term with an energy gap DE = 630 K. Upper critical field, Hc2, estimated from resistivity measurements, exceeds 75 T with zero-field Tc = 26.3 K, suggesting an unconventional nature for superconductivity.Comment: 12 pages and 4 figure