Browsing Faculty of Arts and Sciences by Title
Now showing items 9676-9695 of 24540
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Hierarchical Bayesian Inference in the Visual Cortex
(Optical Society of America, 2003)Traditional views of visual processing suggest that early visual neurons in areas V1 and V2 are static spatiotemporal filters that extract local features from a visual scene. The extracted information is then channeled ... -
Hierarchical Encoding in Visual Working Memory
(SAGE Publications, 2011-02-04)Influential models of visual working memory treat each item to be stored as an independent unit and assume that there are no interactions between items. However, real-world displays have structure that provides higher-order ... -
Hierarchical File Systems Are Dead
(USENIX Association, 2009)For over forty years, we have assumed hierarchical file system namespaces. These namespaces were a rudimentary attempt at simple organization. As users have begun to interact with increasing amounts of data and are ... -
A hierarchical finite mixture model that accommodates zero-inflated counts, non-independence, and heterogeneity
(Wiley-Blackwell, 2014)A number of mixture modeling approaches assume both normality and independent observations. However, these two assumptions are at odds with the reality of many data sets, which are often characterized by an abundance of ... -
Hierarchical Game-Theoretic Models of Transparency in the Administrative State
(2013-09-30)This dissertation develops three game-theoretic models in each of its three chapters to explore the strategic implications of transparency in the administrative state. Each model contains a similar set of three players: a ... -
Hierarchical honeycomb auxetic metamaterials
(Nature Publishing Group, 2015)Most conventional materials expand in transverse directions when they are compressed uniaxially resulting in the familiar positive Poisson’s ratio. Here we develop a new class of two dimensional (2D) metamaterials with ... -
Hierarchical phases of filamentary active matter
(2021-11-16)Studies of active matter seek to identify the properties of materials made from dense collections of animate objects. Within this effort, one promising direction aims to reconstruct the remarkable properties of living ... -
Hierarchical recruitment of Plk4 and regulation of centriole biogenesis by two centrosomal scaffolds, Cep192 and Cep152
(National Academy of Sciences, 2013)Centrosomes play an important role in various cellular processes, including spindle formation and chromosome segregation. They are composed of two orthogonally arranged centrioles, whose duplication occurs only once per ... -
Hierarchical spacetime control
(Association for Computing Machinery, 1994)Specifying the motion of an animated linked figure such that it achieves given tasks (e.g., throwing a ball into a basket) and performs the tasks in a realistic fashion (e.g., gracefully, and following physical laws such ... -
Hierarchical Sparse Coding for Wireless Link Prediction in an Airborne Scenario
(IEEE, 2013)We build a data-driven hierarchical inference model to predict wireless link quality between a mobile unmanned aerial vehicle (UAV) and ground nodes. Clustering, sparse feature extraction, and non-linear pooling are combined ... -
Hierarchical Structure of Magnetohydrodynamic Turbulence in Position-Position-Velocity Space
(American Astronomical Society, 2013)Magnetohydrodynamic turbulence is able to create hierarchical structures in the interstellar medium (ISM) that are correlated on a wide range of scales via the energy cascade. We use hierarchical tree diagrams known as ... -
Higgs criticality in a two-dimensional metal
(American Physical Society (APS), 2015)We analyze a candidate theory for the strange metal near optimal hole doping in the cuprate superconductors. The theory contains a quantum phase transition between metals with large and small Fermi surfaces of spinless ... -
Higgs production at the large hadron collider: Phenomenological model and theoretical predictions
(Elsevier BV, 2011)Using the results from relativistic gauge field theory, a phenomenological model is developed for the production of an isolated Higgs particle H. The specific process is p+p → A+H +B, where the group of particles A (B) ... -
High concentrations of manganese and sulfur in deposits on Murray Ridge, Endeavour Crater, Mars
(Mineralogical Society of America, 2016)Mars Reconnaissance Orbiter HiRISE images and Opportunity rover observations of the ~22 km wide Noachian age Endeavour Crater on Mars show that the rim and surrounding terrains were densely fractured during the impact ... -
High density genetic mapping identifies new susceptibility loci for rheumatoid arthritis
(2012)Summary Using the Immunochip custom single nucleotide polymorphism (SNP) array, designed for dense genotyping of 186 genome wide association study (GWAS) confirmed loci we analysed 11,475 rheumatoid arthritis cases of ... -
High Depth, Whole-Genome Sequencing of Cholera Isolates from Haiti and the Dominican Republic
(BioMed Central, 2012)Background: Whole-genome sequencing is an important tool for understanding microbial evolution and identifying the emergence of functionally important variants over the course of epidemics. In October 2010, a severe cholera ... -
High Efficiency Near Diffraction-Limited Mid-Infrared Flat Lenses Based on Metasurface Reflectarrays
(The Optical Society, 2016)A limiting factor in the development of mid-infrared optics is the lack of abundant materials that are transparent, low cost, lightweight, and easy to machine. In this paper, we demonstrate a metasurface device that ... -
High Efficiency Power Delivery for Chip Multiprocessors Using Voltage Stacking
(2016-09-08)Efficient power delivery is a critical design target for modern computing systems. Inefficiencies in the power delivery network, coupled with increases in current draw and worsening current transients, significantly hinder ... -
High Electrical Conductivity in Ni 3 (2,3,6,7,10,11-hexaiminotriphenylene) 2 , a Semiconducting Metal–Organic Graphene Analogue
(American Chemical Society (ACS), 2014)Reaction of 2,3,6,7,10,11-hexaaminotriphenylene with Ni2+ in aqueous NH3 solution under aerobic conditions produces Ni3(HITP)2 (HITP = 2,3,6,7,10,11-hexaiminotriphenylene), a new two-dimensional metalorganic framework ... -
High Electrical Conductivity in Ni\(_3\)(2,3,6,7,10,11-hexaiminotriphenylene)\(_2\), a Semiconducting Metal–Organic Graphene Analogue
(American Chemical Society (ACS), 2014)Reaction of 2,3,6,7,10,11-hexaaminotriphenylene with Ni2+ in aqueous NH3 solution under aerobic conditions produces Ni_3(HITP)_2(HITP = 2,3,6,7,10,11-hexaiminotriphenylene), a new two-dimensional metal−organic framework ...