930 research outputs found
John P. MacLean portrait
No full textPhotograph of Ohio author John P. MacLean (1848-1939). MacLean was born in Franklin, Ohio, and is remembered as a Universalist minister, historian and archaeologist. In addition to writings on Scottish history and the Shakers, his work included the books "A Manual of the Antiquity of Man" (1877), "The Mound Builders" (1879) and "Mastodon, Mammoth and Man" (1880)
John P. MacLean portrait
No full textPhotograph of Ohio author John P. MacLean (1848-1939). MacLean was born in Franklin, Ohio, and is remembered as a Universalist minister, historian and archaeologist. In addition to writings on Scottish history and the Shakers, his work included the books "A Manual of the Antiquity of Man" (1877), "The Mound Builders" (1879) and "Mastodon, Mammoth and Man" (1880)
Season 1, Episode 10: Maclean
Get PDFMaclean. The name is synonymous with many things: great writing, fishing, and fire to name just a few. On this, the tenth and final episode of season one, author John Maclean joins the podcast, along with University of Montana researcher Brent Ruby and host Charlie Palmer to discuss South Canyon, the history of hotshots, and John’s current book project on the Yarnell Hill fire that killed nineteen Granite Mountain Hotshots.https://scholarworks.umt.edu/ontheline_podcasts/1009/thumbnail.jp
A recognition theorem for polynomial growth outer automorphisms of the free group
No full textFeighn and Handel’s recognition theorem for Out(F_n) provides invariants that canonically determine any forward rotationless outer automorphism of the free group. We ask to what extent those invariants can be extended to outer automorphisms with some periodic behavior. Many of the same constructions do not have natural analogs, in particular because of the possible lack of principal representatives in this setting. However, by restricting our attention to polynomial growth outer automorphisms and using train track technology, we are able to find a special set of lines in the free group that encode all the dynamical information of these non-forward rotationless maps.Ph. D.Includes bibliographical referencesIncludes vitaby By Gregory MacLean Schinke Fei
The Effect of Electrostatic Screening on a Nanometer Scale Electrometer
No full textWe investigate the effect of electrostatic screening on a nanoscale silicon MOSFET electrometer. We find that screening by the lightly doped p-type substrate, on which the MOSFET is fabricated, significantly affects the sensitivity of the device. We are able to tune the rate and magnitude of the screening effect by varying the temperature and the voltages applied to the device, respectively. We show that despite this screening effect, the electrometer is still very sensitive to its electrostatic environment, even at room temperature.United States. Dept. of Energy (award DE-FG02-08ER46515)United States. Army Research Office (contract W911NF-07-D-0004
Contact-independent measurement of electrical Conductance of a Thin Film with a Nanoscale Sensor
No full textContact effects are a common impediment to electrical measurements throughout the fields of nanoelectronics, organic electronics, and the emerging field of graphene electronics. We demonstrate a novel method of measuring electrical conductance in a thin film of amorphous germanium that is insensitive to contact effects. The measurement is based on the capacitive coupling of a nanoscale metal-oxide-semiconductor field-effect transistor (MOSFET) to the thin film so that the MOSFET senses charge diffusion in the film. We tune the contact resistance between the film and contact electrodes and show that our measurement is unaffected. With the MOSFET, we measure the temperature and field dependence of the conductance of the amorphous germanium, which are fit to a model of variable-range hopping. The device structure enables both a contact-independent and a conventional, contact-dependent measurement, which makes it possible to discern the effect of the contacts in the latter measurement. This measurement method can be used for reliable electrical characterization of new materials and to determine the effect of contacts on conventional electron transport measurements, thus guiding the choice of optimal contact materials.United States. Army Research Office (contract W911 NF-07-D-0004)United States. Dept. of Energy (grant DE-FG02-08ER46515
Measuring Charge Transport in a Thin Solid Film Using Charge Sensing
No full textWe measure charge transport in a hydrogenated amorphous silicon (a-Si:H) thin film using a nanometer scale silicon MOSFET as a charge sensor. This charge detection technique makes possible the measurement of extremely large resistances even in the presence of blocking contacts. At high temperatures, where the resistance of the a-Si:H is not too large, the charge detection measurement agrees with a direct measurement of current. The device geometry allows us to probe both the field effect and dispersive transport in the a-Si:H using charge sensing and to extract the density of states near the Fermi energy.United States. Army Research Office (contract W911NF-07-D-0004)United States. Dept. of Energy (award DE-FG02-08ER46515
A Modified Linear Integral Resonant Controller for suppressing jump-phenomenon and hysteresis in micro-cantilever beam structures
Get PDFCredit author statement James MacLean: developed the theory and performed the simulations. Sumeet S. Aphale: supervised the overall research, helped with theoretical development, presentation of results and document formatting.Peer reviewe
Reactionary Populism and the Historical Erosion of Democracy in America. An Interview with Nancy MacLean, Duke University
Get PDFNancy MacLean is the William H. Chafe Professor of History and Public Policy at Duke University, and the award-winning author of several books, including Behind the Mask of Chivalry: The Making of the Second Ku Klux Klan; Freedom is Not Enough: The Opening of the American Workplace; The American Women’s Movement, 1945-2000: A Brief History with Documents; and Debating the American Conservative Movement: 1945 to the Present. She also served the editor of Scalawag: A White Southerner’s Journey through Segregation to Human Rights Activism.
Her scholarship has received more than a dozen major prizes and awards, and has been supported by fellowships from the American Council of Learned Societies, the National Endowment for the Humanities, the National Humanities Center, the Russell Sage Foundation, and the Woodrow Wilson National Fellowships Foundation.
Her most recent book is Democracy in Chains: The Deep History of the Radical Right’s Stealth Plan for America. Democracy in Chains was a finalist for the National Book Award, and the winner of the Los Angeles Times Book Award in Current Affairs, the Lannan Foundation Cultural Freedom Award, and the Lillian Smith Book Award. The Nation magazine named it the “Most Valuable Book” of the year
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