Now showing items 17577-17596 of 24540

    • Quantitative Methods for Stratified Medicine 

      Yong, Florence Hiu-Ling (2015-05-15)
      Stratified medicine has tremendous potential to deliver more effective therapeutic intervention to improve public health. For practical implementation, reliable prediction models and clinically meaningful categorization ...
    • Quantitative population dynamics of microbial communities in plankton-fed microbial fuel cells 

      White, Helen K; Reimers, Clare E; Cordes, Erik E; Dilly, Geoffrey F; Girguis, Peter R. (Springer Nature, 2009)
      This study examines changes in diversity and abundance of bacteria recovered from the anodes of microbial fuel cells (MFCs) in relation to anode potential, power production and geochemistry. MFCs were batch-fed with plankton, ...
    • A Quantitative Study of the Paratexts in Erasmus-Froben Imprints 

      Blair, Ann; Patton, Maryam (Brill, 2021-10-08)
      We study the paratexts in Erasmus’ imprints with Johann then Hieronymus Froben of Basel between 1514 and 1536. From Valentina Sebastiani’s bibliography of Johann Froben we observe that Erasmus was a more abundant paratexter ...
    • Quantitative study of the transmission of axially channeled protons in thin silicon crystals 

      Rosner, J. S.; Gibson, W. M.; Golovchenko, Jene Andrew; Goland, A. N.; Wegner, H. E. (American Physical Society (APS), 1978)
      The azimuthal distributions of protons transmitted through thin silicon single crystals near the ⟨110⟩ axis were measured using a two-dimensional position-sensitive detector. The data are composed of ringlike distributions ...
    • A Quantitative Test of Population Genetics Using Spatio-Genetic Patterns in Bacterial Colonies 

      Korolev, Kirill; Xavier, Joao; Nelson, David R.; Foster, Kevin (University of Chicago Press, 2011)
      It is widely accepted that population genetics theory is the cornerstone of evolutionary analyses. Empirical tests of the theory, however, are challenging because of the complex relationships between space, dispersal, and ...
    • Quantitative-Proteomic Comparison of Alpha and Beta Cells to Uncover Novel Targets for Lineage Reprogramming 

      Choudhary, Amit; Hu He, Kaihui; Mertins, Philipp; Udeshi, Namrata D.; Dančík, Vlado; Fomina-Yadlin, Dina; Kubicek, Stefan; Clemons, Paul A.; Schreiber, Stuart L.; Carr, Steven A.; Wagner, Bridget K. (Public Library of Science, 2014)
      Type-1 diabetes (T1D) is an autoimmune disease in which insulin-secreting pancreatic beta cells are destroyed by the immune system. An emerging strategy to regenerate beta-cell mass is through transdifferentiation of ...
    • Quantized biopolymer translocation through nanopores: Departure from simple scaling 

      Melchionna, Simone; Bernaschi, Massimo; Fyta, Maria; Kaxiras, Efthimios; Succi, Sauro (American Physical Society, 2009)
      We discuss multiscale simulations of long biopolymer translocation through wide nanopores that can accommodate multiple polymer strands. The simulations provide clear evidence of folding quantization, namely the translocation ...
    • Quantized Current Blockade and Hydrodynamic Correlations in Biopolymer Translocation through Nanopores: Evidence from Multiscale Simulations 

      Bernaschi, Massimo; Melchionna, Simone; Succi, Sauro; Fyta, Maria; Kaxiras, Efthimios (American Chemical Society, 2008-02-27)
    • Quantized Layer Growth at Liquid-Crystal Surfaces 

      Ocko, B. M.; Braslau, A.; Pershan, Peter S.; Als-Nielsen, J.; Deutsch, M. (American Physical Society, 1986)
      We report x-ray reflectivity measurements on the free surface of dodecylcyanobiphenyl (12CB) at the isotropic to smectic-A phase transition. At about \(10^{\circ}C\) above \(T_{IA}\), smectic-A-like ordering develops at ...
    • quantro: a data-driven approach to guide the choice of an appropriate normalization method 

      Hicks, Stephanie C.; Irizarry, Rafael A. (BioMed Central, 2015)
      Normalization is an essential step in the analysis of high-throughput data. Multi-sample global normalization methods, such as quantile normalization, have been successfully used to remove technical variation. However, ...
    • Quantum affine symmetry as generalized supersymmetry 

      LeClair, André; Vafa, Cumrun (Elsevier, 1993)
    • Quantum Algorithm for Molecular Properties and Geometry Optimization 

      Kassal, Ivan; Aspuru-Guzik, Alan (American Institute of Physics, 2009)
      Quantum computers, if available, could substantially accelerate quantum simulations. We extend this result to show that the computation of molecular properties (energy derivatives) could also be sped up using quantum ...
    • Quantum algorithm for obtaining the energy spectrum of molecular systems 

      Wang, Hefeng; Kais, Sabre; Aspuru-Guzik, Alan; Hoffmann, Mark R. (Royal Society of Chemistry (RSC), 2008)
      Simulating a quantum system is more efficient on a quantum computer than on a classical computer. The time required for solving the Schro¨ dinger equation to obtain molecular energies has been demonstrated to scale ...
    • Quantum and photonic information processing with non-von Neumann architectures 

      Chalupnik, Michelle Van Bogaert (2022-11-23)
      Computing and information processing are currently undergoing evolution and change. The development of alternative and non-traditional computing architectures has become increasingly necessary to keep pace with ...
    • Quantum approximate optimization of non-planar graph problems on a planar superconducting processor 

      Zhou, Leo (Springer Science and Business Media LLC, 2021-02-04)
      Faster algorithms for combinatorial optimization could prove transformative for diverse areas such as logistics, finance, and machine learning. Accordingly, the possibility of quantum enhanced optimization has driven much ...
    • Quantum autoencoders for efficient compression of quantum data 

      Romero, Jonathan; Olson, Jonathan P; Aspuru-Guzik, Alan (IOP Publishing, 2017-08-18)
      Classical autoencoders are neural networks that can learn efficient low dimensional representations of data in higher dimensional space. The task of an autoencoder is, given an input x, is to map x to a lower dimensional ...
    • Quantum Bousso bound 

      Strominger, Andrew; Thompson, David (American Physical Society, 2004)
      The Bousso bound requires that one-quarter of the area of a closed codimension-2 spacelike surface exceeds the entropy flux across a certain lightsheet terminating on the surface. The bound can be violated by quantum effects ...
    • Quantum Butterfly Effect in Weakly Interacting Diffusive Metals 

      Patel, Aavishkar; Chowdhury, Debanjan; Sachdev, Subir; Swingle, Brian (American Physical Society (APS), 2017-09-14)
      We study scrambling, an avatar of chaos, in a weakly interacting metal in the presence of random potential disorder. It is well known that charge and heat spread via diffusion in such an interacting disordered metal. In ...
    • Quantum cascade lasers in chemical physics 

      Curl, Robert F.; Capasso, Federico; Gmachl, Claire; Kosterev, Anatoliy A.; McManus, Barry; Lewicki, Rafał; Pusharsky, Michael; Wysocki, Gerard; Tittel, Frank K. (Elsevier BV, 2010)
      In the short space of 15 years since their first demonstration, quantum cascade lasers have become the most useful sources of tunable mid-infrared laser radiation. This Letter describes these developments in laser ...
    • Quantum Cascade Surface-Emitting Photonic Crystal Laser 

      Colombelli, Raffaele; Srinivasan, Kartik; Troccoli, Mariano; Painter, Oskar; Gmachl, Claire F.; Tennant, Donald M.; Sergent, A. Michael; Sivco, Deborah L.; Cho, Alfred Y.; Capasso, Federico (American Association for the Advancement of Science, 2003)
      We combine photonic and electronic band structure engineering to create a surface-emitting quantum cascade microcavity laser. A high-index contrast two-dimensional photonic crystal is used to form a micro-resonator that ...