Now showing items 7244-7263 of 18276

    • Host Plant Specialization Driven by Sexual Selection 

      Quental, Tiago; Paten, Manus; Pierce, Naomi (University of Chicago Press, 2007)
      We propose a new mechanism based on sexual selection to explain the evolution of diet breadth in insects. More specifically, we show that mate choice in females for certain diet-derived male pheromones can be exploited ...
    • Host-Based Detection of Worms through Peer-to-Peer Cooperation 

      Malan, David J.; Smith, Michael (Association for Computing Machinery, 2005)
      We propose a host-based, runtime defense against worms that achieves negligible risk of false positives through peer-to-peer cooperation. We view correlation among otherwise independent peers’ behavior as anomalous behavior, ...
    • The host-galaxy response to the afterglow of GRB 100901A 

      Hartoog, O. E.; Wiersema, K.; Vreeswijk, P. M.; Kaper, L.; Tanvir, N. R.; Savaglio, S.; Berger, Edo; Chornock, R; Covino, S.; D, V.; Flores, H.; Fynbo, J. P. U.; Goldoni, P.; Gomboc, A.; Melandri, A.; Pozanenko, A.; Schaye, J.; Postigo, A. d. U.; Wijers, R. A. M. J. (Oxford University Press (OUP), 2013)
      For Gamma-Ray Burst 100901A, we have obtained Gemini-North and Very Large Telescope optical afterglow spectra at four epochs: one hour, one day, three days and one week after the burst, thanks to the afterglow remaining ...
    • Host-to-parasite Gene Transfer in Flowering Plants: Phylogenetic Evidence from Malpighiales 

      Davis, Charles Cavender; Wurdack, Kenneth J. (American Academy of Arts and Sciences, 2004)
      Horizontal gene transfer (HGT) between sexually unrelated species has recently been documented for higher plants, but mechanistic explanations for HGTs have remained speculative. We show that a parasitic relationship may ...
    • Hostile Takeovers in the 1980s: The Return to Corporate Specialization 

      Bhagat, Sanjai; Shleifer, Andrei; Vishny, Robert W. (Brooking Institution Press, 1990)
    • Hot Accretion Flows Around Black Holes 

      Yuan, Feng; Narayan, Ramesh (Annual Reviews, 2014)
      Black hole accretion flows can be divided into two broad classes: cold and hot. Cold accretion flows, which consist of cool optically thick gas, are found at relatively high mass accretion rates. Prominent examples are the ...
    • Hot Gaseous Coronae Around Spiral Galaxies: Probing the Illustris Simulation 

      Bogdán, Ákos; Vogelsberger, Mark; Kraft, Ralph P.; Hernquist, Lars; Gilfanov, Marat; Torrey, Paul; Churazov, Eugene; Genel, Shy; Forman, William R.; Murray, Stephen S.; Vikhlinin, Alexey; Jones, Christine; Böhringer, Hans (American Astronomical Society, 2015)
      The presence of hot gaseous coronae around present-day massive spiral galaxies is a fundamental prediction of galaxy formation models. However, our observational knowledge remains scarce, since to date only four gaseous ...
    • Hot Halos and Galactic Glasses (Carbonado) 

      Anninos, Dionysios; Anous, Tarek; Barandes, Jacob Aaron; Denef, Frederik; Gaasbeek, Bram (Springer Verlag, 2012)
      We initiate a systematic study of the state space of non-extremal, stationary black hole bound states in four-dimensional \(N\) = 2 supergravity. Specifically, we show that an exponential multitude of classically stable ...
    • Hot nights on extrasolar planets: mid-infrared phase variations of hot Jupiters 

      Cowan, N. B.; Agol, E.; Charbonneau, D. (Oxford University Press, 2007)
      We present results from Spitzer Space Telescope observations of the mid-infrared phase variations of three short-period extrasolar planetary systems: HD 209458, HD 179949 and 51 Peg. We gathered Infrared Array Camera (IRAC) ...
    • Hot Spot Emission from a Freely Precessing Neutron Star 

      Heyl, Jeremy S.; Hernquist, Lars (American Astronomical Society, 2002)
      Recent observations of 1E 161348-5055, the neutron star candidate at the center of the supernova remnant RCW 103, show that a component of its emission varies sinusoidally with a period of approximately 6 hours. We argue ...
    • Hotspot of Glyoxal Over the Pearl River Delta Seen from the OMI Satellite Instrument: Implications for Emissions of Aromatic Hydrocarbons 

      Chan Miller, Christopher; Jacob, Daniel J.; González Abad, Gonzalo; Chance, Kelly (European Geosciences Union, 2016)
      The Pearl River delta (PRD) is a densely populated hub of industrial activity located in southern China. OMI (Ozone Monitoring Instrument) satellite observations reveal a large hotspot of glyoxal (CHOCHO) over the PRD that ...
    • The House of Experiment in Seventeenth-Century England 

      Shapin, Steven (University of Chicago Press, 1988)
    • Household energy demand in Urban China: Accounting for regional prices and rapid income change 

      Cao, Jing; Liang, Huifang; Ho, Mun (International Association for Energy Economics (IAEE), 2016-09-01)
      Understanding the rapidly rising demand for energy in China is essential to efforts to reduce the country’s energy use and environmental damage. In response to rising incomes and changing prices and demographics, household ...
    • Household Finance 

      Campbell, John (Blackwell Publishing, 2006)
      The study of household finance is challenging because household behavior is difficult to measure, and households face constraints not captured by textbook models. Evidence on participation, diversification, and mortgage ...
    • Household Risk Management and Optimal Mortgage Choice 

      Campbell, John; Cocco, Joao (MIT Press, 2003)
      This paper asks how a household should choose between a fixed-rate (FRM) and an adjustable-rate (ARM) mortgage. In an environment with uncertain inflation a nominal FRM has a risky real capital value, whereas an ARM has a ...
    • Households and the Emergence of Cities in Ancient Mesopotamia 

      Ur, Jason Alik (Cambridge University Press (CUP), 2014)
      The world’s first cities emerged on the plains of Mesopotamia (modern Iraq and Syria) in the fourth millennium BC. Attempts to understand this settlement process have assumed revolutionary social change, the disappearance ...
    • Housing Supply and Housing Bubbles 

      Glaeser, Edward; Gyourko, Joseph; Saiz, Albert (Elsevier, 2008)
      Like many other assets, housing prices are quite volatile relative to observable changes in fundamentals. If we are going to understand boom-bust housing cycles, we must incorporate housing supply. In this paper, we present ...
    • How (not) to lose a decade 

      Frieden, Jeffry (Consortium Erudit, 2013)
      Recovery from the Great Recession has been fraught with problems. The recovery has not been behaving like the aftermath of a typical cyclical recession, and this is because we are instead in the midst of an ongoing debt ...
    • How a Scientific Discovery Is Made: A Case History 

      Holton, Gerald; Chang, Hasok; Jurkowitz, Edward (Sigma Xi, The Scientific Research Honor Society, 1996-07)
    • How Affirmative Action Became Diversity Management: Employer Response to Antidiscrimination Law, 1961 to 1996 

      Kelly, Erin; Dobbin, Frank (Sage Publications, 1998)
      How did corporate affirmative action programs become diversity programs? During the 1970s, active federal enforcement of equal employment opportunity (EEO) and affirmative action (AA) law, coupled with ambiguity about the ...