Now showing items 5058-5077 of 5118

    • W+W− boson pair production in proton-proton collisions at √s=13  TeV 

      CMS Collaboration (2020)
      A measurement of the W+W− boson pair production cross section in proton-proton collisions at √s=13  TeV is presented. The data used in this study are collected with the CMS detector at the CERN LHC and correspond to an integrated luminosity of 35.9  fb−1. The W+W− candidate events are selected by requiring two oppositely charged leptons (electrons ...
    • Wafer-scale monodomain films of spontaneously aligned single-walled carbon nanotubes 

      He, Xiaowei; Gao, Weilu; Xie, Lijuan; Li, Bo; Zhang, Qi; (2016)
      The one-dimensional character of electrons, phonons and excitons in individual single-walled carbon nanotubes leads to extremely anisotropic electronic, thermal and optical properties. However, despite significant efforts to develop ways to produce large-scale architectures of aligned nanotubes, macroscopic manifestations of such properties remain ...
    • Walking along chromosomes with super-resolution imaging, contact maps, and integrative modeling 

      Nir, Guy; Farabella, Irene; Estrada, Cynthia Pérez; Ebeling, Carl G.; Beliveau, Brian J.; (2018)
      Chromosome organization is crucial for genome function. Here, we present a method for visualizing chromosomal DNA at super-resolution and then integrating Hi-C data to produce three-dimensional models of chromosome organization. Using the super-resolution microscopy methods of OligoSTORM and OligoDNA-PAINT, we trace 8 megabases of human chromosome ...
    • War President : The Approval Ratings of George W. Bush 

      Eichenberg, Richard C.; Stoll, Richard J.; Lebo, Matthew (2006-12)
      The authors estimate a model of the job approval ratings of President George W. Bush that includes five sets of variables: a “honeymoon” effect, an autoregressive function that tracks a decline in approval, measures of economic performance, measures of important “rally events,” and a measure of the costs of war—in this case, the U.S. death toll in ...
    • WATCH: WiFi in Active TV Channels 

      (2015)
      Today's "white space" model of spectrum sharing applied in the UHF TV band allows channels that are not being used regionally by a TV broadcaster to be re-purposed for unlicensed-style secondary access in 24 hour increments. Unfortunately, populated areas have few unused channels for white space usage. Nonetheless, from the UHF TV viewer's perspective, ...
    • Watching the Cryosphere Thaw: Seismic Monitoring of Permafrost Degradation Using Distributed Acoustic Sensing During a Controlled Heating Experiment 

      Cheng, Feng; Lindsey, Nathaniel J.; Sobolevskaia, Valeriia; Dou, Shan; Freifeld, Barry; (2022)
      Permafrost degradation is rapidly increasing in response to a warming Arctic climate, altering landscapes and damaging critical infrastructure. Solutions for monitoring permafrost thaw dynamics are essential to understand biogeochemical feedbacks as well as to issue warnings for hazardous geotechnical conditions. We investigate the feasibility of ...
    • Water and Social Space: Using georeferenced maps and geocoded images to enrich the history of Rio de Janeiro's fountains 

      Metcalf, Alida C. (2014)
      Water infrastructure is essential to any city, but especially so in the history of Rio de Janeiro. Historically, Rio de Janeiro lacked easy access to fresh water. Not only was it not situated along a river but it was impractical to dig wells over much of the original city because of marshes and a high water table. A single aqueduct completed in the ...
    • Water cost savings from soil biochar amendment: A spatial analysis 

      Kroeger, Jennifer E.; Pourhashem, Ghasideh; Medlock, Kenneth B.; Masiello, Caroline A.; Baker Institute for Public Policy (2021)
      While a large body of literature exists on the ability of biochar to retain water and nutrients, little research exists connecting these benefits to biochar qualities, water retention mechanisms, and optimal locations for agricultural use. More information is needed for biochar stakeholders to make informed decisions about where deployment should ...
    • Water-structuring molecules and nanomaterials enhance radiofrequency heating in biologically relevant solutions 

      Lara, Nadia C.; Haider, Asad A.; Ho, Jason C.; Wilson, Lon J.; Barron, Andrew R.; (2016)
      For potential applications in nano-mediated radiofrequency cancer hyperthermia, the nanomaterial under investigation must increase the heating of any aqueous solution in which it is suspended when exposed to radiofrequency electric fields. This should also be true for a broad range of solution conductivities, especially those that artificially mimic ...
    • Wave function methods for canonical ensemble thermal averages in correlated many-fermion systems 

      Harsha, Gaurav; Henderson, Thomas M.; Scuseria, Gustavo E. (2020)
      We present a wave function representation for the canonical ensemble thermal density matrix by projecting the thermofield double state against the desired number of particles. The resulting canonical thermal state obeys an imaginary-time evolution equation. Starting with the mean-field approximation, where the canonical thermal state becomes an ...
    • Weaker nematic phase connected to the first order antiferromagnetic phase transition inᅠSrFe2As2ᅠcompared toᅠBaFe2As2 

      Tam, David W.; Wang, Weiyi; Zhang, Li; Song, Yu; Zhang, Rui; (2019)
      Understanding the nature of the electronic nematic phase in iron pnictide superconductors is important for elucidating its impact on high-temperature superconductivity. Here we use transport and inelastic neutron scattering to study spin excitations and in-plane resistivity anisotropy in uniaxial pressure detwinned BaFe2As2 and SrFe2As2, the parent ...
    • Wearable wireless power systems for `ME-BIT' magnetoelectric-powered bio implants 

      Alrashdan, Fatima T.; Chen, Joshua C.; Singer, Amanda; Avants, Benjamin W.; Yang, Kaiyuan; (2021)
      Objective. Compared to biomedical devices with implanted batteries, wirelessly powered technologies can be longer-lasting, less invasive, safer, and can be miniaturized to access difficult-to-reach areas of the body. Magnetic fields are an attractive wireless power transfer modality for such bioelectronic applications because they suffer negligible ...
    • Wee-1 Kinase Inhibition Overcomes Cisplatin Resistance Associated with High-RiskTP53ᅠMutations in Head and Neck Cancer through Mitotic Arrest Followed by Senescence 

      Osman, Abdullah A.; Monroe, Marcus M.; Alves, Marcus V. Ortega; Patel, Ameeta A.; Katsonis, Panagiotis; (2015)
      Although cisplatin has played a role in "standard-of-care" multimodality therapy for patients with advanced squamous cell carcinoma of the head and neck (HNSCC), the rate of treatment failure remains particularly high for patients receiving cisplatin whose tumors have mutations in the TP53 gene. We found that cisplatin treatment of HNSCC cells with ...
    • Weight‐adjusted discontinuous Galerkin methods: Matrix‐valued weights and elastic wave propagation in heterogeneous media 

      Chan, Jesse (2018)
      Weight‐adjusted inner products are easily invertible approximations to weighted L2 inner products. These approximations can be paired with a discontinuous Galerkin (DG) discretization to produce a time‐domain method for wave propagation which is low storage, energy stable, and high‐order accurate for arbitrary heterogeneous media and curvilinear ...
    • The Weil-Peterson Hessian of Length on Teichmuller Space 

      Wolf, Michael (2012)
      We present a brief but nearly self-contained proof of a formula for the Weil-Petersson Hessian of the geodesic length of a closed curve (either simple or not simple) on a hyperbolic surface. The formula is the sum of the integrals of two naturally defined positive functions over the geodesic, proving convexity of this functional over Teichmuller space ...
    • Wertheim's association theory applied to one site patchy colloids: Beyond the single bonding condition 

      Marshall, Bennett D.; Ballal, Deepti; Chapman, Walter G. (2012)
      We apply Wertheim's theory to develop an equation of state for one site patchy colloids where the patch can bond multiple times. We allow for the possibility of ring formation without the introduction of empirical parameters and show that for moderate patch coverage the infinite series of chain graphs is well represented by the first two terms. The ...
    • Wettability alteration implications on pore-scale multiphase flow in porous media using the lattice Boltzmann method 

      Nemer, Mohamed N.; Rao, Parthib R.; Schaefer, Laura; Energy Systems Laboratory (2020)
      Multiphase flow in porous media is found in a variety of engineering problems, including in technologies focused on satisfying the energy needs of an expanding global population while minimizing the effects of human activity on climate change. The objective of this study is to provide a better understanding of the importance and interdependence of ...
    • Weyl–Kondo semimetal in heavy-fermion systems 

      Lai, Hsin-Hua; Grefe, Sarah E.; Paschen, Silke; Si, Qimiao; Rice Center for Quantum Materials (2018)
      While electronic states with nontrivial topology have traditionally been known in insulators, they have been evidenced in metals during the past 2 years. Such Weyl semimetals show topological protection while conducting electricity both in the bulk and on the surface. An outstanding question is whether topological protection can happen in metals with ...
    • What is Early Jewish and Christian Mysticism? 

      DeConick, April D.; DeConick, April D. (2006)
    • What is in a Percentage?: Calculation as the Poetic Translation of Human Rights 

      Ballestero, Andrea (2014)
      Increasingly, the efficacy of human rights, international norms, and commercial standards is deposited in numbers as measures of social and financial value. Taking the form of indicators, goals, and targets, these numbers are active participants in the everyday practices through which the law is constituted around the world. This paper examines the ...