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Topic Area: Math

Displaying records 71 to 80 of 226 records.
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71. Bicubic B-Spline Surface Approximation of Invariant Tori
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7731
Topic: Math
Published: 10/20/2010
Authors: Sita Ramamurti, David E. Gilsinn
Abstract: The invariant torus of a coupled system of Van der Pol oscillators is approximated using bicubic B-splines. The paper considers the case of strong nonlinear coupling. In particular, the shapes of invariant torii for the Van der Pol coupling parameter ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906906

72. A New Analysis of the False-Positive Rate of a Bloom Filter
Topic: Math
Published: 10/15/2010
Authors: Ken Christensen, Allen L Roginsky, Miguel Jimeno
Abstract: A Bloom filter is a space-efficient data structure used for probabilistic set membership testing. When testing an object for set membership, a Bloom filter may give a false positive. The analysis of the false positive rate is key to understanding the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903775

73. Modelling Type Ia Supernova Light Curves
Topic: Math
Published: 9/15/2010
Authors: Bert W Rust, Dianne M O'Leary, Katharine M Mullen
Abstract: Type Ia supernova light curves are characterized by a rapid rise from zero luminosity to a peak value, followed by a slower quasi-exponential decline. The rise and peak last for a few days, while the decline persists for many months. It is widely b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903019

74. Metrological Compatibility and Statistical Consistency
Topic: Math
Published: 9/5/2010
Authors: Raghu N Kacker, Ruediger Kessel, Klaus-Dieter Sommer, Xin Bian
Abstract: The traditional concept of consistency in multiple evaluations of the same measurand is statistical. The statistical view of consistency does not match the modern view of uncertainty in measurement; in particular, it does not apply to the results of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902441

75. Practical Near-Collisions for Reduced Round Blake, Fugue, Hamsi and JH
Topic: Math
Published: 8/23/2010
Authors: Meltem Sonmez Turan, Erdener Uyan
Abstract: A hash function is near-collision resistant, if it is hard to find two messages with hash values that differ in only small number of bits. In this study, we used hill climbing methods to find near-collisions for some of the second round SHA-3 candida ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905988

76. On Feedback Functions of Maximum Length Nonlinear Feedback Shift Registers
Topic: Math
Published: 8/2/2010
Authors: Cagdas Calik, Meltem Sonmez Turan, Ferruh Ozbudak
Abstract: Feedback shift registers are basic building blocks for many cryptographic primitives. Due to the insecurities of Linear Feedback Shift Register (LFSR) based systems, the use of Nonlinear Feedback Shift Registers (NFSRs) became more popular. In this w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905987

77. Performance Measurements for Evaluating Static and Dynamic Multiple Human Detection and Tracking Systems in Unstructured Environments
Topic: Math
Published: 6/30/2010
Authors: Bodt Bodt, Richard Camden, Harry A. Scott, Adam S Jacoff, Tsai Hong Hong, Tommy Chang, Richard J Norcross, Anthony J Downs, Ann M Virts
Abstract: The Army Research Laboratory (ARL) Robotics Collaborative Technology Alliance (CTA) conducted an assessment and evaluation of multiple algorithms for real-time detection of pedestrians in Laser Detection and Ranging (LADAR) and video sensor data take ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904192

78. Remembering Paul Garabedian
Topic: Math
Published: 6/15/2010
Author: Geoffrey B McFadden
Abstract: Paul R. Garabedian, a leader in the field of computational science, passed away on May 13th, 2010, at his home in Manhattan at the age of 82 after a long battle with cancer. During the course of sixty years of research on the faculties at Stanford an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905935

79. The NIST Handbook of Mathematical Functions
Topic: Math
Published: 5/12/2010
Authors: Frank William John Olver, Daniel W Lozier, Ronald F Boisvert, Charles W Clark
Abstract: The NIST Handbook of Mathematical Functions supplies validated reference information in 36 chapters on a wide selection of important mathematical functions, covering the properties necessary for their use in scientific applications, together with gen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903838

80. Estimating Volumes of Near-spherical Molded Artifacts
Series: Journal of Research (NIST JRES)
Topic: Math
Published: 5/3/2010
Authors: David E. Gilsinn, Bruce R. Borchardt, Amelia Tebbe
Abstract: The Food and Drug Administration (FDA) is conducting research on developing reference lung cancer cancer lesions, called phantoms, to test computed tomography (CT) scanners and their software. FDA loaned two semi-spherical phantoms to the National In ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904645



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