Now showing items 3460-3479 of 18256

    • Democratic Inefficiency? Regime Type and Suboptimal Choices in International Politics 

      Bas, Muhammet Ali (SAGE Publications, 2012)
      This article examines the relationship between regime type and decision makers’ tendency to make suboptimal choices in international crises. To test hypotheses on the optimality of democratic foreign policy, the author ...
    • Democratic Representation and Partisan Bias in Congressional Elections 

      King, Gary; Browning, Robert X. (Cambridge University Press, 1987)
      T h e translation of citizen votes into legislative seats is of central importance in democratic electoral systems. It has been a longstanding concern among scholars in political science and in numerous other disciplines. ...
    • Democratic Transitions 

      Epstein, David; Bates, Robert; Goldstone, Jack; Kristensen, Ida; O'Halloran, Sharyn (Blackwell Publishing, 2006)
      Przeworski et al. (2000) challenge the key hypothesis in modernization theory: political regimes do not transition to democracy as per capita incomes rise, they argue. Rather, democratic transitions occur randomly, but ...
    • Democratization, Women's Movements, and Gender-Equitable States: A Framework for Comparison 

      Viterna, Jocelyn; Fallon, Kathleen (SAGE Publications, 2008)
      There is a rich collection of case studies examining the relationship between democratization, women's movements, and gendered state outcomes, but the variation across cases is still poorly understood. In response, this ...
    • A Demographic estimate of the population of the Qing eight banners 

      Elliott, Mark Christopher; Campbell, Cameron; Lee, James (2016)
      The Eight Banners (Chinese baqi 八旗/Manchu jakūn gūsa) is well known as the omnibus military, social, political, and economic institution that played a crucial role in enabling the Manchu conquest of China in the middle ...
    • Demographics of the Galaxies Hosting Short-Duration Gamma-Ray Bursts 

      Fong, W; Berger, Edo; Chornock, R; Margutti, R; Levan, A. J.; Tanvir, N. R.; Tunnicliffe, R. L.; Czekala, I.; Fox, D. B.; Perley, D. A.; Cenko, S. B.; Zauderer, B. A.; Laskar, T.; Persson, S. E.; Monson, A. J.; Kelson, D. D.; Birk, C.; Murphy, D.; Servillat, M.; Anglada, G. (IOP Publishing, 2013)
      We present observations of the afterglows and host galaxies of three short-duration gamma-ray bursts (GRBs): 100625A, 101219A and 110112A. We find that GRB 100625A occurred in a z = 0.452 early-type galaxy with a stellar ...
    • Demon-like Algorithmic Quantum Cooling and Its Realization with Quantum Optics 

      Xu, Jin-Shi; Yung, Man-Hong; Xu, Xiao-Ye; Boixo, Sergio; Zhou, Zheng-Wei; Li, Chuan-Feng; Aspuru-Guzik, Alan; Guo, Guang-Can (Nature Publishing Group, 2014)
      Simulation of the low-temperature properties of many-body systems remains one of the major challenges in theoretical and experimental quantum information science. We present, and demonstrate experimentally, a universal ...
    • Demonstration of a 1 / 4 -Cycle Phase Shift in the Radiation-Induced Oscillatory Magnetoresistance in GaAs / AlGaAs Devices 

      Mani, R. G.; Smet, J. H.; von Klitzing, K.; Narayanamurti, V.; Johnson, W. B.; Umansky, V. (American Physical Society, 2004)
    • Demonstration of a Multipulse Interferometer for Quantum Kicked-Rotor Studies 

      Tonyushkin, Alexey A; Wu, Saijun; Prentiss, Mara (American Physical Society, 2009)
      We implemented a multipulse interferometer scheme that allows us to study a quantum kicked rotor by observing dephasing of momentum coherence. Our study shows that momentum coherence can be nearly perfectly preserved under ...
    • Demonstration of a quick process to achieve buried heterostructure quantum cascade laser leading to high power and wall plug efficiency 

      Metaferia, Wondwosen; Simozrag, Bouzid; Junesand, Carl; Sun, Yan-Ting; Carras, Mathieu; Blanchard, Romain; Capasso, Federico; Lourdudoss, Sebastian (Society of Photo-optical Instrumentation Engineers, 2014)
      Together with the optimal basic design, buried heterostructure quantum cascade laser (BH-QCL) with semi-insulating regrowth offers a unique possibility to achieve an effective thermal dissipation and lateral single mode. ...
    • Demonstration of an Area-Enclosing Guided-Atom Interferometer for Rotation Sensing 

      Wu, Saijun; Su, Edward; Prentiss, Mara (American Physical Society, 2007)
      We demonstrate area-enclosing atom interferometry based on a moving guide. Light pulses along the free-propagation direction of a magnetic guide are applied to split and recombine the confined atomic matter-wave, while the ...
    • Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits 

      Shulman, Michael Dean; Dial, O; Harvey, Shannon Pasca; Bluhm, H.; Umansky, V.; Yacoby, Amir (American Association for the Advancement of Science (AAAS), 2012)
      Quantum computers have the potential to solve certain problems faster than classical computers. To exploit their power, it is necessary to perform interqubit operations and generate entangled states. Spin qubits are a ...
    • Denaturation of Proteins by SDS and Tetraalkylammonium Dodecyl Sulfates 

      Lee, Andrew; Tang, Sindy K. Y.; Mace, Charles R.; Whitesides, George McClelland (American Chemical Society (ACS), 2011)
      This article describes the use of capillary electrophoresis (CE) to examine the influence of different cations (C(+); C(+) = Na(+) and tetra-n-alkylammonium, NR(4)(+), where R = Me, Et, Pr, and Bu) on the rates of denaturation ...
    • Dendritic Growth Velocity and Diffusive Speed in Solidification of Undercooled Dilute Ni-Zr Melts 

      Schwarz, Mikael; Arnold, Craig B.; Aziz, Michael; Herlach, Dieter M. (Elsevier, 1997)
      During rapid solidification of undercooled melts deviations from local equilibrium occur at the solid-liquid interface. With increasing interface velocity <i>v</i>, the interfacial undercooling Delta<i>T-i</i> increases ...
    • Denial and Punishment in the North Caucasus: Evaluating the Effectiveness of Coercive Counter-Insurgency 

      Toft, Monica Duffy; Zhukov, Yuri Maximovich (Sage Publications, 2012)
      A growing literature on the subnational diffusion of armed conflict rests on the proposition that political violence triggers more violence, in the same locality and elsewhere. Yet state efforts to contain such uprisings ...
    • Dense Cores in Perseus: The Influence of Stellar Content and Cluster Environment 

      Foster, Jonathan B.; Rosolowsky, Erik W.; Kauffmann, Jens; Pineda, Jaime Eduardo; Borkin, Michelle Anne; Caselli, Paola; Myers, Philip C.; Goodman, Alyssa (American Astronomical Society, 2009)
      We present the chemistry, temperature, and dynamical state of a sample of 193 dense cores or core candidates in the Perseus Molecular cloud and compare the properties of cores associated with young stars and clusters with ...
    • Dense sampling of bird diversity increases power of comparative genomics 

      Edwards, Scott (Springer Science and Business Media LLC, 2020-11-11)
      Whole-genome sequencing projects are increasingly populating the tree of life and characterising biodiversity1–4. Sparse taxon sampling has been proposed to confound phylogenetic inference5 and captures only a fraction of ...
    • Density and Temperature Structure of TMC‐1C from 450 and 850 Micron Maps 

      Schnee, S.; Goodman, A. (American Astronomical Society, 2005)
    • Density Jumps Near the Virial Radius of Galaxy Clusters 

      Patej, Anna; Loeb, Abraham (American Astronomical Society, 2016)
      Recent simulations have indicated that the dark matter halos of galaxy clusters should feature steep density jumps near the virial radius. Since the member galaxies are expected to follow similar collisionless dynamics as ...
    • Density Operators and Quasiprobability Distributions 

      Cahill, K. E.; Glauber, Roy J. (American Physical Society (APS), 1969)
      The problem of expanding a density operator ρ in forms that simplify the evaluation of important classes of quantum-mechanical expectation values is studied. The weight function P ( α ) of the P representation, the Wigner ...