1,714 research outputs found
S.R. Lewis letter to Z. Eastman, March 5, 1874
No full textBrief letter from S.R. Lewis to Z. Eastman, marking the announcement of an abolitionists' reunion to be held in Chicago in June of 1875. Lewis requests that Eastman, given his close acquaintance with Benjamin Lundy, prepare a public statement of remembrance on Lundy and his contributions to the anti-slavery movement. Benjamin Lundy (1789-1839) was a prominent Quaker abolitionist best known for his development of abolitionist periodicals. His Genius of Universal Emancipation was first published in 1821 from his home in Mt. Pleasant, Ohio, and enjoyed a wide circulation across the antebellum United States. In the 1820s, the young William Lloyd Garrison came to work for The Genius. Benjamin Lundy traveled widely seeking subscriptions to The Genius, giving talks about the anti-slavery movement, and observing and documenting the conditions of enslaved people across the Americas. He was also involved in the establishment of freed slave colonies in Mexico
Modelling and optimization of a permanent-magnet machine in a flywheel
No full textThis thesis describes the derivation of an analytical model for the design and optimization of a permanent-magnet machine for use in an energy storage flywheel. A prototype of this flywheel is to be used as the peak-power unit in a hybrid electric city bus. The thesis starts by showing the feasibility of using a flywheel energy storage system for this application, as opposed to other energy storage technologies. It then continues by describing a prototype flywheel system and the required electrical machine: a radial-flux external-rotor permanent-magnet synchronous machine without slots in the stator iron and with a shielding cylinder. An analytical model for the machine is derived, based on 2D electromagnetic field calculations, including the reaction field of the eddy currents in the shielding cylinder. Torque and losses are calculated by means of the Theorem of Poynting and the Lorentz force. Such a machine was built and the analytical model has been validated by experimental measurements. Lastly, the thesis suggests and implements a machine optimization algorithm.Information Technology and System
Design metrics for evaluating the propulsive efficiency of future ships
No full textThere is an increasing need for the ship design process to take account of environmental issues such as the emission of greenhouse gases and the likely extension of a carbon dioxide charging mechanism to international shipping. These issues, together with the need for economic viability, provide further incentives to improve the efficiency of propulsion of ships. The main components of powering are firstly reviewed. Individual components and other power saving devices are identified which should contribute to improvements in the overall efficiency of propulsion. Suitable design metrics and procedures, taking into account economic and environmental factors, are recommended for the design of future ships
Description of S.R. Krom's system and machinery for dry crushing and concentrating ores.
No full textCover title.Mode of access: Internet.MAIN; TN500.K7 1876: Introduction signed by author, S.R. Krom
Differential Effects of Continuous versus Discontinuous Aerobic Training on Blood Pressure and Hemodynamics
No full textThe purpose of this study was to compare the hemodynamic, arterial stiffness, and blood flow changes following four weeks of either continuous or discontinuous aerobic exercise in adults. Forty-seven subjects between the ages of 18 and 57 were recruited for one month of either continuous aerobic treadmill work for 30 minutes at 70% max heart rate or 3 bouts of 10 minutes of exercise at 70% of max heart rate with two 10 minute break periods in between, totaling 30 minutes of aerobic work. Following exercise, both CON and DIS groups demonstrated a significant improvement in VO2max (CON 35.39±1.99 to 38.19±2.03; DIS 36.18±1.82 to 39.33±1.75), heart rate max (CON 183.5±3.11 to 187.17±3.06; DIS 179.06±2.75 to 182±2.61), decreases in SBP(CON 119±1.82 to 115.11±1.50; DIS 117.44±1.90 to 112.67±1.66), DBP(CON 72.56±1.65 to 70.56±1.06; DIS 71.56±1.59 to 69.56±1.43), augmentation index (CON 17.17±2.17 to 14.9±1.92; DIS 19.71±2.66 to 13.91±2.46), central pulse wave velocity (CON 8.29±0.32 to 6.92±0.21; DIS 7.85±0.30 to 6.83±0.29), peripheral PWV (CON 9.49±0.35 to 7.72±0.38; DIS 9.11±0.37 to 7.58±0.47), and significant increases in average forearm blood flow (CON 4.06±0.12 to 4.34±0.136; DIS 4.26±0.18 to 4.53±0.15), peak FBF following reactive hyperemia (CON 28.45±0.094 to 29.96±0.45; DIS 29.29±0.46 to 30.6±0.38) area under the curve of FBF (CON 28.65±1.77 to 30.4±1.08; DIS 30.52±1.9 to 31.67±1.44) and AUC peak FBF following RH (CON 222.3±5.68 to 231.95±4.42; DIS 230.81±6.91 to 237.19±5.39. These data suggest that for healthy people either four weeks of continuous or discontinuous aerobic training is effective in improving measures of fitness and vascular health
Evaluating the Ecological Impacts of Cultivating Genetically Modified Herbicide Tolerant (GMHT) Oilseed Rape and Maize: (2007-B-DS-1-S1) STRIVE Report
No full textThis report is published as part of the Science, Technology, Research and Innovation for the
Environment (STRIVE) Programme 2007–2013.Author has checked copyrigh
Refinement of solutions to the linear complimentarity problem
No full textNash equilibrium;game theaory;matrices
Toward more efficient heuristic construction of Boolean functions
No full textBoolean functions have numerous applications in domains as diverse as coding theory, cryptography,and telecommunications. Heuristics play an important role in the construction of Boolean functions with the desired properties for a specific purpose. However, there are only sparse results trying to understand the problem’s difficulty. With this work, we aim to address this issue. We conduct a fitness landscape analysis based on Local Optima Networks (LONs) and investigate the influence of different optimization criteria and variation operators. We observe that the naive fitness formulation results in the largest networks of local optima with disconnected components. Also, the combination of variation operators can both increase or decrease the network size. Most importantly, we observe correlations of local optima’s fitness, their degrees of interconnection, and the sizes of the respective basins of attraction. This can be exploited to restart algorithms dynamically and influence the degree of perturbation of the current best solution when restarting.Domagoj Jakobovic, Stjepan Picek, Marcella S.R. Martins, Markus Wagne
Pioneers of Ashley Valley
No full textLeft to right; front row: Mrs. George A. Davis (in wheel-chair), Violet Hodgkinson, Roxanna Remington, Elmo Goodrich, Tora Starkie, Hannah Carter Davey, Lydia Merrell, Marie Lybbert, unidentified, Elias Williams, John Slaugh Sr., Joel Bascom, Alonzo Atwood, Delbert Hullinger, William Hodgkinson. Second row: Margaret Watkins, May Hodgkinson, Juliaette Perry, Mrs. Gurr, Sarah Robbins, Emma Roberts, Alice Jane Bascom, Antoinette Lybbert, Harriett Goodrich, John Nielson, Abner Haws, Joseph Gardiner, Philip McKowen, Ephraim Roberts, George A. Davis, George Albert Davis. Third row: Mary Rasmussen, Hepsebah Hodgkinson, Hattie Haws, Rose Scott, Harriet Merrell, Elthara Collett, Mrs. Dan Evans, Elizabeth Atwood, Mary Nielson, Annie Gardiner, William Franklin, Jacob Collier, Theo Collier, Mrs. S.R. Bennion, Edward Watkins. Back row: Zora Glenn, Mary Merrell, Emma Hullinger, Maud Hodgkinson, Marion Manwaring, Mrs. E.W. Evans, David Manwaring, Margaret Allred, Rose Perry, Bert Allred, Abbie Goodrich, Austin Glenn, Mr. Gurr, George A. Slaugh, George Allred, Louise Allred, Lewis Allred, Lydia Goodrich, William Merrell, Elizabeth Olsen, Rachel Bascom, Isabel Watkins (Mrs. Frank Watkins)
Correction to: Clinical Trials in High-Risk Medulloblastoma: Evolution of the SIOP-Europe HR-MB Trial (Cancers, (2022), 14, 2, (374), 10.3390/cancers14020374)
No full text\ua9 2024 by the authors.In the original publication [1], the funder Cancer Research UK, A2524 was not included. Keith Wheatley, Simon Gates, and Victoria Homer were not included as authors in the original publication. The reason we would like to add the authors is that the statistical element of the trial and the trial design were in a large part done by the statistical authors and the team were necessary for the running of the trial. The corrected Author Contributions Statement appears here. Author Contributions: Conceptualization, S.B., N.A., L.G., M.M., K.W., S.R. and S.C.C.; methodology, K.W., S.G. and V.H.; project administration, S.G. and V.H.; resources, S.B., N.A., L.G., M.M., S.R. and S.C.C.; writing—original draft preparation, S.B., N.A., L.G., M.M., S.R. and S.C.C.; writing—review and editing, S.B., N.A., L.G., M.M., S.R. and S.C.C. All authors have read and agreed to the published version of the manuscript. Author Contributions: Conceptualization, S.B., N.A., L.G., M.M., K.W., S.R. and S.C.C.; methodology, K.W., S.G. and V.H.; project administration, S.G. and V.H.; resources, S.B., N.A., L.G., M.M., S.R. and S.C.C.; writing—original draft preparation, S.B., N.A., L.G., M.M., S.R. and S.C.C.; writing—review and editing, S.B., N.A., L.G., M.M., S.R. and S.C.C. All authors have read and agreed to the published version of the manuscript. Cancer Research UK Clinical Trials Unit, University of Birimingham, Birmingham B15 2TT, UK; [email protected](K.W.); [email protected] (S.G.); [email protected] (V.H.) The authors apologize for any inconvenience caused and state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated
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