College of Science
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Coupled model biases breed spurious lowfrequency variability in the tropical Pacific Ocean
(2018)Coupled general circulation model (GCM) biases in the tropical Pacific are substantial, including a westward extended cold sea surface temperature (SST) bias linked to El Niño–Southern Oscillation (ENSO). Investigation of ... 
Interferenceless polarization splitting through nanoscale van der Waals heterostructures
(2018)The ability to control the polarization of light at the extreme nanoscale has long been a major scientific and technological goal for photonics. Here we predict the phenomenon of polarization splitting through van der Waals ... 
Khoisan huntergatherers have been the largest population throughout most of modernhuman demographic history
(2014)The Khoisan people from Southern Africa maintained ancient lifestyles as huntergatherers or pastoralists up to modern times, though little else is known about their early history. Here we infer early demographic histories ... 
Molecular mechanism of the Escherichia coli AhpC in the function of a chaperone under heatshock conditions
(2018)Peroxiredoxins (Prxs) are ubiquitous antioxidants utilizing a reactive cysteine for peroxide reduction and acting as a molecular chaperone under various stress conditions. Besides other stimulating factors, oxidative and ... 
Structures of Mycobacterium smegmatis 70S ribosomes in complex with HPF, tmRNA, and PtRNA
(2018)Ribosomes are the dynamic protein synthesis machineries of the cell. They may exist in different functional states in the cell. Therefore, it is essential to have structural information on these different functional states ... 
Phase locking and quantum statistics in a parametrically driven nonlinear resonator
(2016)We discuss phaselocking phenomenon at lowlevel of quanta and quantum statistics for parametrically driven nonlinear Kerr resonator (PDNR). Oscillatory mode of PDNR is created in the process of a degenerate downconversion ... 
Timeconsistent meanvariance portfolio selection with only risky assets
(2018)Time consistency and optimal diversification criteria are popular in the dynamic portfolio construction in practice. This paper is devoted to the exact analytical solution of the timeconsistent meanvariance portfolio ... 
Isolation of a cyclic (alkyl)(amino)germylene
(2016)A 1,4addition of a dichlorogermylene dioxane complex with α,βunsaturated imine 1 gave a dichlorogermane derivative 2 bearing a GeC3N fivemembered ring skeleton. By reducing 2 with KC8, cyclic (alkyl)(amino)germylene 3 ... 
Characterization of the regulation of CD46 RNA alternative splicing
(2016)Here we present a detailed analysis of the alternative splicing regulation of human CD46, which generates different isoforms with distinct functions. CD46 is a ubiquitous membrane protein that protects host cells from ... 
A cyclic diGMPbinding adaptor protein interacts with histidine kinase to regulate twocomponent signaling
(2016)The bacterial messenger cyclic diGMP (cdiGMP) binds to a diverse range of effectors to exert its biological effect. Despite the fact that freestanding PilZ proteins are by far the most prevalent cdiGMP effectors known ... 
Divergent ringopening coupling between cyclopropanols and alkynes under cobalt catalysis
(2018)Cobalt–diphosphine catalysts promote ringopening coupling reactions between cyclopropanols and unactivated internal alkynes, affording either βalkenyl ketones or multisubstituted cyclopentenol derivatives in good yields ... 
On lowrisk heavy hitters and sparse recovery schemes
(2018)We study the heavy hitters and related sparse recovery problems in the low failure probability regime. This regime is not wellunderstood, and the main previous work on this is by Gilbert et al. (ICALP'13). We recognize ... 
Lossless dimension expanders via linearized polynomials and subspace designs
(2018)For a vector space F^n over a field F, an (eta,beta)dimension expander of degree d is a collection of d linear maps Gamma_j : F^n > F^n such that for every subspace U of F^n of dimension at most eta n, the image of U ... 
Linear sketching over F2
(2018)We initiate a systematic study of linear sketching over F_2. For a given Boolean function treated as f : F_2^n > F_2 a randomized F_2sketch is a distribution M over d x n matrices with elements over F_2 such that Mx ... 
The complexity of quantum disjointness
(2017)We introduce the communication problem QNDISJ, short for Quantum (Unique) NonDisjointness, and study its complexity under different modes of communication complexity. The main motivation for the problem is that it is a ... 
How long can optimal locally repairable codes be?
(2018)A locally repairable code (LRC) with locality r allows for the recovery of any erased codeword symbol using only r other codeword symbols. A Singletontype bound dictates the best possible tradeoff between the dimension ... 
Fidelity of quantum strategies with applications to cryptography
(2018)We introduce a definition of the fidelity function for multiround quantum strategies, which we call the strategy fidelity, that is a generalization of the fidelity function for quantum states. We provide many interesting ... 
A composition theorem for randomized query complexity
(2018)Let the randomized query complexity of a relation for error probability epsilon be denoted by R_epsilon(). We prove that for any relation f contained in {0,1}^n times R and Boolean function g:{0,1}^m > {0,1}, R_{1/3}(f o ... 
Silanecatalysed fast growth of large singlecrystalline graphene on hexagonal boron nitride
(2015)The direct growth of highquality, large singlecrystalline domains of graphene on a dielectric substrate is of vital importance for applications in electronics and optoelectronics. Traditionally, graphene domains grown ... 
Quantum recommendation systems
(2017)A recommendation system uses the past purchases or ratings of n products by a group of m users, in order to provide personalized recommendations to individual users. The information is modeled as an m \times n preference ...