Browsing Doctoral Theses by Title
Now showing items 10841-10860 of 22187
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K-stability of Log Fano Cone Singularities
(Massachusetts Institute of Technology, 2022-05)In this thesis, we define the 𝛿-invariant for log Fano cone singularities, and show that the necessary and sufficient condition for K-semistability is 𝛿 ≥ 1. This generalizes the result of C. Li and K. Fujita. We also ... -
K-theoretic Hall algebras for quivers with potential
(Massachusetts Institute of Technology, 2020)Given a quiver with potential (Q, W), Kontsevich-Soibelman constructed a Hall algebra on the cohomology of the stack of representations of (Q, W). As shown by Davison-Meinhardt, this algebra comes with a filtration whose ... -
K-theory and index theory on manifolds with boundary
(Massachusetts Institute of Technology, 1991) -
Kac's random walk and coupon collector's process on posets
(Massachusetts Institute of Technology, 2008)In the first part of this work, we study a long standing open problem on the mixing time of Kac's random walk on SO(n, R) by random rotations. We obtain an upper bound mix = O (n2.5 log n) for the weak convergence which ... -
Kaon production in Au-Au collisions at 11.6 GEV/c per nucleon
(Massachusetts Institute of Technology, 1997) -
Kaon production in relativistic heavy ion collisions at 14.6 GeV/c per nucleon
(Massachusetts Institute of Technology, 1994) -
Kazhdan-Lusztig polynomials and cells for affine Weyl groups and unequal parameters
(Massachusetts Institute of Technology, 1996) -
Kähler structures on cotangent bundles of real analytic Riemannian manifolds
(Massachusetts Institute of Technology, 1990) -
Keep it secret, keep it safe : privacy, security, and robustness in an adversarial world
(Massachusetts Institute of Technology, 2019)The deployment of large-scale systems involving many individuals or devices necessitates the design of computational frameworks that are resilient to failures or malicious actors. This thesis introduces algorithms and ... -
Keep the ORCs at bay : how eukaryotic cells ensure one round of DNA replication per cell cycle
(Massachusetts Institute of Technology, 2020)During each cell cycle, eukaryotic cells must faithfully replicate their genome, ensuring exactly one full copy is made. Both under-replicating or over-replicating the genome can have deleterious consequences including ... -
Keeping secrets from those you work with : constructions and characterizations of encryption
(Massachusetts Institute of Technology, 2014)given to expanding the models in which encrypted messages are sent (leading to constructions such as identity-based encryption) and the additional functionalities supported by encryption schemes (such as homomorphic ... -
Keer electro-optic measurements in liquid dielectrics
(Massachusetts Institute of Technology, 2014)Kerr electro-optic technique has been used to measure the electric field distribution in high voltage stressed dielectric liquids, where the difference between refractive indices for light polarized parallel and perpendicular ... -
The kernel of doubt : agricultural biotechnology, braided temporalities, and agrarian environments in India
(Massachusetts Institute of Technology, 2019)Genetically modified (GM) cotton, Bt cotton was introduced in India in 2002 through a joint venture company, Mahyco-Monsanto Biotech (India) Private Limited (MMB). It is a collaboration between the Indian agricultural ... -
Kernel-based approximate dynamic programming using Bellman residual elimination
(Massachusetts Institute of Technology, 2010)Many sequential decision-making problems related to multi-agent robotic systems can be naturally posed as Markov Decision Processes (MDPs). An important advantage of the MDP framework is the ability to utilize stochastic ... -
Kernels of learning : tracking the emergence of visual recognition through multivariate approaches
(Massachusetts Institute of Technology, 2011)The visual system is a dynamic entity whose response properties depend on context and experience. In this thesis, I examine how the brain changes as we learn to see - what changes occur during the onset of recognition, in ... -
Kerr electro-optic measurements and nonuniform electric field reconstructions
(Massachusetts Institute of Technology, 1999) -
Kerr electro-optic tomography for determination of nonuniform electric field distributions in dielectrics
(Massachusetts Institute of Technology, 1999) -
Key receiver circuits for digital beamforming in millimeter-wave imaging
(Massachusetts Institute of Technology, 2011)Millimeter-wave (MMW) frequencies have wavelengths small enough to offer sufficient spatial resolution for certain imaging applications. Advances in silicon processes have developed devices that can operate at these ... -
The Keynesian revolution
(Massachusetts Institute of Technology, 1944) -
Kids 'n space : explorations into spatial cognition of children learning 3-D computer graphics
(Massachusetts Institute of Technology, 1990)