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You searched on: Topic Area: Environment/Climate Date range: to 12/01/2007

Displaying records 1 to 10 of 306 records.
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1. Monitoring Contaminants in Seabirds: The Importance of Specimen Banking
Topic: Environment/Climate
Published: 11/13/2007
Authors: Stacy S Vander Pol, Paul R Becker
Abstract: Historically, contaminants in seabird tissues were monitored by considering physically visible effects; however, subtle, sub-lethal effects are also important. Several long-term monitoring and specimen banking programs are in place for seabirds, and ...

2. Repeatability Analysis on the Tool Point Dynamics for Investigations on Uncertainty in Milling Stability
Report Number: 823028
Topic: Environment/Climate
Published: 11/11/2007
Authors: Kang-Jae Lee, M Alkan Donmez
Abstract: Stability analysis is needed to maximize milling performance while avoiding chatter. However, such an analysis is time-consuming, requiring the use of sophisticated instrumentation, and has significant level of uncertainty, which impedes the widespre ...

3. A Novel Peak Detection Algorithm for Use in the Study of Machining Chip Segmentation
Report Number: 823018
Topic: Environment/Climate
Published: 11/7/2007
Authors: Eric Paul Whitenton, Robert W Ivester, Jarred C. Heigel
Abstract: The study of how metal deforms and flows as parts are machined yields important insights into the metal cutting process. Improvements in high-speed digital imaging and image processing software promise to improve our understanding of the tool-workpie ...

4. Certification of SRM 1589a PCBs, Pesticides, PBDEs, and Dioxins/Furans in Human Serum
Topic: Environment/Climate
Published: 10/1/2007
Authors: Michele M Schantz, Jennifer M Lynch, Stefan D Leigh, D. G. Patterson, Katherine E Sharpless, Andreas Sjodin, H M. Stapleton, R. Swarthout, Wayman E Turner, Stephen A Wise

5. Measuring Chip Segmentation by High-Speed Microvideography and Comparison to Finite-Element Modeling Simulations
Report Number: 823027
Topic: Environment/Climate
Published: 8/27/2007
Authors: Robert W Ivester, Eric Paul Whitenton, Jarred C. Heigel, T Marusich, C Arthur
Abstract: This paper presents comparisons between finite element modeling and experimental measurement of chip segmentation in American Iron and Steel Institute 1045 Steel. Direct measurements of chip segmentation through post-process microscopic analysis or i ...

6. Multifunctional ferrimagnetic-ferroelectric thin films for microwave applications
Topic: Environment/Climate
Published: 6/20/2007
Authors: Ranko Heindl, S. Witanachchi, P. Mukherjee, A. Heim, G. Matthews, S. Balachandran, S. Natarajan, T. Weller
Abstract: Ferrimagnetic and ferroelectric structures based on barium strontium titanate and barium hexaferrite are investigated for potential applications in tunable microwave devices. Thin film bilayers were grown on MgO and sapphire, and their underlying c ...

7. A Novel Cooling System to Reduce Thermally-Induced Errors of Machine Tools
Topic: Environment/Climate
Published: 6/14/2007
Authors: M Alkan Donmez, Mahn-Hee Hahn, Johannes A Soons
Abstract: This study explores a method to reduce thermally-induced errors of machine tools through temperature stabilization with compressed air. The method uses inexpensive, specialy-shaped, silicon tubing wth small silts. Compressed air forced through such ...

8. Aging Effects on the Dynamic Tensile Response of Zylon Fibers
Report Number: 823037
Topic: Environment/Climate
Published: 6/4/2007
Authors: Richard L. Rhorer, Joannie W Chin, Amanda Lattam Forster, Weinong Wayne Chen, Bo Song, Xu Nie
Abstract: This paper reports on dynamic tests of fibers used in soft body armor. The type of fiber tested is poly(p-phenylene-2,6- benzobisoxaxole) (PBO), or brand name Zylon. Aged fibers were tested using a modified split Hopkinson pressure bar that loads the ...

9. Smart Machining Systems: Robust Optimization and Adaptive Control Optimization for Turning Operations
Topic: Environment/Climate
Published: 5/22/2007
Authors: Robert W Ivester, Jarred C. Heigel
Abstract: A critical aspect of smart machining systems is the appropriate management of knowledge and information to support effective decision-making. Uncertainty associated with model-based predictions of machining performance plays an important role in deci ...

10. Face Recognition Algorithms surpass humans matching faces across changes in illumination
Topic: Environment/Climate
Published: 5/15/2007
Authors: P Jonathon Phillips, Alice J. O'Toole, Fang Jian, Julianne Ayadd, Nils Penard, Herve Abdi
Abstract: We compared the accuracy of eight state-of-the-art face recognition algorithms with human performance on the same task. Humans and algorithms determined whether two face images, taken under different illumination conditions, were pictures of the same ...

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