1,860 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
Psychological aspects of inflammatory bowel disease: a biopsychosocial approach
No full textIn the Western world around 360 in every 100,000 individuals have inflammatory bowel disease (IBD), a relapsing-remitting autoimmune disease that affects the gastrointestinal tract. Its impact on individual functioning across physical and psychosocial domains is significant and psychological distress is a common feature, with research suggesting that active IBD is associated with one of the highest rates of depression and anxiety of all chronic illnesses. Despite the high prevalence of mental health co-morbidities in IBD, psychological illness remains largely undertreated, with studies showing that 60% of IBD patients experiencing mental health problems do not receive adequate help. In this book, Knowles and Mikocka-Walus bring together world experts who practice integrated and holistic approach in their care for IBD patients, to provide an overview of research across a range of topics associated with the biopsychosocial treatment of IBD. Each chapter provides an up-to-date comprehensive consolidation and evaluation of the current literature alongside recommendations for practice.Edited by Simon R. Knowles and Antonina A. Mikocka-Walu
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
Knowles, Mary E. (Death, 1891-05-17)
No full textAddress: 147 Baymiller St.Age at death: 19 Mos.350/Pg. 58/1891/F W S/Cinti, Ohio/Dr. S.R. Geiser/Estep & Meyer/Spring Grove Cem.Original record filed in drawer labeled 'Knipper-Koehn'
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
- …
