Most Popular Books by John Tierney

Autographs in ink, including: (on sheet 1) Matthew Baillie, Dr. [John] Aiken, John Dalton, and Sir Matthew Tierney; (on sheet 2) Winfield W. Riefler, Walter W. Stewart, Robert B. Warren, Edward M. Earle, James W. Alexander, Marston Morse, E.A. Lowe, Hetty Goldman, Erwin Panofsky, Oswald Veblen, and Ernst Herzfeld.

In order to extend the boundaries of helicopter performance and increase forward-ight speed, it is necessary to reduce the drag on the rotor hub, which can account for as much as 30% of the total parasite drag on the helicopter. Currently, there is limited experimental data available to predict the drag force on new hub congurations. The purpose of this testing is to create a database of lift and drag at various angles of attack to aid in hub design and hub drag prediction. Testing was conducted in the 12 inch-diameter water tunnel at ARL Penn State on four shapes - DBLN 526, 4:1 Ellipse, 3.25:1 Rectangle, and a new Optimized Cambered Shape (OCS) designed at UT Knoxville. Load cell data for lift and drag were obtained for angles of attack from approximately 5 to 5 at Reynolds numbers from 3.1 10^5 to 6.2 10^5. Drag data were also calculated using a control volume analysis and PIV velocity elds taken in the wake of the airfoils. The highest Cd were calculated for the 4:1 Ellipse and OCS in reverse ow. Drag coecients calculated for the OCS in forward ow were comparable to the DBLN 526. The highest magnitude CL were measured for the DBLN 526, OCS in reverse ow, and 4:1 Ellipse, while low-magnitude CL is observed over the tested range of angles of attack for the OCS in forward ow. CD Reynolds number sensitivity was similar between the DBLN 526 and the 4:1 Ellipse, while CD for the OCS is much more sensitive to Reynolds number in reverse ow than in forward ow. A low-order BEM drag prediction model used the drag coecient data from this testing to estimate the drag on a "Low-Drag Hub" designed at Penn State. The BEM prediction code produced 2/rev drag harmonics twice that observed in the experimental data for the low-drag hub but underpredicted the 4/rev drag harmonic by approximately 40%. The prediction code fails to capture higher-frequency content (6/rev, 8/rev, etc.). Results are plotted and tabulated for use in future hub drag prediction toolset.

Klondike Gold is an interactive CD-ROM, available both for Windows and Macintosh computer platforms. This is intended primarily to be a research tool for use in schools to enable students to become familiar with: fundamentals of multimedia, use of the computer as a research tool, the development impact on indigenous cultures and the environmental impact.

"Read together, non-fiction, fiction, and poetry of the Korean War, from American, British, and Korean perspectives, inform one another to create a complex and engaging look into "the forgotten war." Taking a look at National Security documents from the Truman administration as well as Bruce Cumings' War in Korea, the Korean War might be understood from a historical perspective. Now read the fiction and poetry inspired by the war, about the war, sometimes by artists who served in the war, and the cracks begin to show in the master narrative that dictated American and allied nations' policy and action in the Korean conflict. Themes addressed in this thesis are "military readiness", "demeanor and performance", "brutal methods", "politics and propaganda", "bigotry and racism", "counter-culture" and more. The critical approaches used include new historicism, ecocriticism, deconstructionism, and others."--Website of ETD.