Recursos de colección

DSpace at MIT (83.339 recursos)

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Mathematics - Bachelor's degree

Mostrando recursos 1 - 17 de 17

  1. Testing models of ultra-fast India-Asia convergence : new paleomagnetic results from Ladakh, Western Himalaya

    Bailey, Elizabeth A
    Rapid India-Asia convergence has led to a major continental collision and formation of the Himalayas, the highest mountain range on Earth. Knowledge of the paleolatitude of the Kohistan-Ladakh Arc (KLA), an intermediate tectonic unit currently situated between the converging Indian and Eurasian continents in Western Himalaya, would constrain the tectonic history and dynamics of Himalayan orogenesis. We present new paleomagnetic data from the Khardung volcanic rocks of the Shyok-Nubra valley region of Ladakh, western Himalaya. Samples from all four sites (KP1-KP4) display high-temperature components indicating a roughly equatorial paleolatitude, with the average of site mean directions implying a paleolatitude of...

  2. Phoenix : an interactive hierarchical topological floorplanning placer

    Chow, Chee-Seng
    by Chee-Seng Chow.

  3. Accelerated clustering through locality-sensitive hashing

    Kishore, Shaunak
    We obtain improved running times for two algorithms for clustering data: the expectation-maximization (EM) algorithm and Lloyd's algorithm. The EM algorithm is a heuristic for finding a mixture of k normal distributions in Rd that maximizes the probability of drawing n given data points. Lloyd's algorithm is a special case of this algorithm in which the covariance matrix of each normally-distributed component is required to be the identity. We consider versions of these algorithms where the number of mixture components is inferred by assuming a Dirichlet process as a generative model. The separation probability of this process, [alpha], is typically...

  4. Experimental simulation of crevice corrosion of a functionally graded composite system of F91 and Fe-12Cr-2Si exposed to high-temperature lead-bismuth eutectic coolant

    Ferry, Sara Elizabeth
    In a system in which metal corrosion is of concern to its long-term structural integrity, crevice corrosion can be a significant cause of damage. Small crevices in a metal exposed to a working fluid (such as a reactor's coolant) may be prone to the development of a localized, aggressive reducing environment. If the metal relies on a passivating layer of oxides for corrosion protection, it may be vulnerable to corrosion attack within the crevice due to a drastically reduced oxygen potential and low pH. Furthermore, in a liquid metal environment, the reducing conditions combined with typically high solubilities of alloy...

  5. Computational neutronics analysis of TRIGA reactors during power pulsing

    Bean, Malcolm (Malcolm K.)
    Training, Research, Isotopes, General Atomics (TRIGA) reactors have the unique capability of generating high neutron flux environments with the removal of a transient control rod, creating conditions observed in fast fission reactors. Recently, several TRIGA reactors have had issues with the deformation of fuel rods nearest the transient control rod, where the neutron flux is highest. This is a difficult problem to analyze because the damage is not simply due to rods overheating, but rather the pressurization of hydrogen, from the Uranium Hydride fuel, that has diffused into the spacing between fuel and cladding. Previous neutronic analyses utilized point kinetics;...

  6. An economic history of five midwestern railroads.

    Kaitz, Gary Marshall
    Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning; and, (B.S.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1977.

  7. Rating systems and learning

    Smith, Warren Douglas
    by Warren Douglas Smith.

  8. Identifying boosted objects with N-subjettiness and linear k-means clustering

    Van Tilburg, Ken
    In this thesis, I explore aspects of a new jet shape - N-subjettiness - designed to identify boosted hadronically-decaying objects (with a particular focus on tagging top quarks) at particle accelerators such as the Large Hadron Collider. Combined with an invariant mass cut on jets, N-subjettiness is a powerful discriminating variable for tagging boosted objects such as top quarks and rejecting the fake background of QCD jets with large invariant mass. In a crossover analysis, the N-subjettiness method is found to outperform the common top tagging methods of the BOOST2010 conference, with top tagging efficiencies of 50% and 20% against...

  9. On determination of the reference state for computation of the available potential energy in a moist atmosphere

    Guivens, Norman Roy
    by Norman R. Guivens, Jr.

  10. Traffic allocation methods for use in impact fee assessment

    Rossi, Thomas Francis
    by Thomas Francis Rossi.

  11. Analysis of scanning in dual offset reflector antennas and the bifocal system

    Rappaport, Carey Milford
    by Carey Milford Rappaport.

  12. Definite integrals

    Mannos, Murray
    by Murray Mannos.

  13. The dynamics of enzymatic switch cascades

    Mukherji, Shankar, 1982-
    Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2004.

  14. Total-to-peak ratios of high purity germanium gamma ray detector

    Nelson, Justin Matthew, 1981-
    Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2004.

  15. Constraining the QSO luminosity function using gravitational lensing statistics

    Fakhouri, Onsi Joe, 1983-
    Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2004.

  16. Color image quantization for frame buffer display

    Heckbert, Paul S
    by Paul S. Heckbert.

  17. Development of a continuous non-invasive extracorporeal blood pressure monitoring device

    Tello, Richard J
    by Richard J. Tello.

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