Browsing FAS Scholarly Articles by Title
Now showing items 6910-6929 of 18292
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Harnessing Geometric Frustration to Form Band Gaps in Acoustic Channel Lattices
(American Physical Society, 2017) -
HARPS-N Observes the Sun as a Star
(IOP Publishing, 2015)Radial velocity (RV) perturbations induced by stellar surface inhomogeneities including spots, plages and granules currently limit the detection of Earth-twins using Doppler spectroscopy. Such stellar noise is poorly ... -
The HARPS-N Rocky Planet Search
(EDP Sciences, 2015)We know now from radial velocity surveys and transit space missions that planets only a few times more massive than our Earth are frequent around solar-type stars. Fundamental questions about their formation history, ... -
Harry Potter and the Master of Death
For decades, the Harry Potter series has provided its global readers with essential life-lessons some may use throughout their lifetime, showing the series is more than just a handful of books, it’s a way of life. Across ... -
HarTAC– The Harvard TAC SCM'03 Agent
(2004)The Trading Agent Competition (TAC) is an annual event in which teams from around the world compete in a given scenario concerning the trading agent problem. This paper describes some of the key features and strategies ... -
Hartle-Hawking Vacuum for c=1 Tachyon Condensation
(Springer Verlag, 2004)Quantum vacua are constructed for a time-symmetric cosmology describing closed string tachyon condensation in two-dimensional string theory. Due to the euclidean periodicity of the solution, and despite its time dependence, ... -
Hartle–Hawking Wave-Function for Flux Compactifications: the Entropic Principle
(Springer (part of Springer Nature), 2005)We argue that the topological string partition function, which has been known to correspond to a wave-function, can be interpreted as an exact "wave-function of the universe" in the mini-superspace sector of physical ... -
Hartree-Fock calculations of a finite inhomogeneous quantum wire
(The American Physical Society, 2008)We use the Hartree-Fock method to study an interacting one-dimensional electron system on a finite wire, partially depleted at the center by a smooth potential barrier. A uniform 1 T Zeeman field is applied throughout the ... -
The Harvard Clean Energy Project: Large-Scale Computational Screening and Design of Organic Photovoltaics on the World Community Grid
(American Chemical Society, 2011)This Perspective introduces the Harvard Clean Energy Project (CEP), a theory-driven search for the next generation of organic solar cell materials. We give a broad overview of its setup and infrastructure, present first ... -
Harvard Forest regional-scale air mass composition by Patterns in Atmospheric Transport History (PATH)
(Wiley-Blackwell, 1998)We calculated 4 years (1990–1993) of back trajectories arriving at Harvard Forest and used them to define patterns in atmospheric transport history. This information was used to assess the degree to which regional-scale ... -
The Harvard organic photovoltaic dataset
(Nature Publishing Group, 2016)The Harvard Organic Photovoltaic Dataset (HOPV15) presented in this work is a collation of experimental photovoltaic data from the literature, and corresponding quantum-chemical calculations performed over a range of ... -
Harvard Revisited: Geography's Return as GIS
(Taylor & Francis, 2009) -
Harvesting renewable energy from Earth’s mid-infrared emissions
(National Academy of Sciences, 2014)It is possible to harvest energy from Earth's thermal infrared emission into outer space. We calculate the thermodynamic limit for the amount of power available, and as a case study, we plot how this limit varies daily and ... -
Hate crime towards minoritized groups increases as they increase in sized-based rank
(Springer Science and Business Media LLC, 2022-08-08)People are on the move in unprecedented numbers within and between countries. How does demographic change affect local intergroup dynamics? In complement to accounts that emphasize stereotypical features of groups as ... -
Hausdorff Dimension and Conformal Dynamics I: Strong Convergence of Kleinian Groups
(International Press, 1999)This paper investigates the behavior of the Hausdorff dimensions of the limit sets \(\Lambda_n\) and \(\Lambda\) of a sequence of Kleinian groups \(\Gamma_n \rightarrow \Gamma\), where \(M = \mathbb{H}^3/\Gamma\) is ... -
Hausdorff Dimension and Conformal Dynamics II: Geometrically Finite Rational Maps
(Birkhäuser Basel, 2000)This paper investigates several dynamically defined dimensions for rational maps \(f\) on the Riemann sphere, providing a systematic treatment modeled on the theory for Kleinian groups. We begin by defining the radial Julia ... -
Hausdorff Dimension and Conformal Dynamics III: Computation of Dimension
(Johns Hopkins University Press, 1998)This paper presents an eigenvalue algorithm for accurately computing the Hausdorff dimension of limit sets of Kleinian groups and Julia sets of rational maps. The algorithm is applied to Schottky groups, quadratic polynomials ... -
Hausdorff Dimension of General Sierpinski Carpets
(Nagoya University Department of Mathematics, 1984) -
Have Individual Stocks Become More Volatile? An Empirical Exploration of Idiosyncratic Risk
(Blackwell Publishing, 2001)This paper uses a disaggregated approach to study the volatility of common stocks at the market, industry, and firm levels. Over the period from 1962 to 1997 there has been a noticeable increase in firm-level volatility ... -
The Hazards of Expert Control: Chief Risk Officers and Risky Derivatives
(SAGE Publications, 2017-05-31)At the turn of the century, regulators introduced policies to control bank risk-taking. Many banks appointed chief risk officers (CROs), yet bank holdings of new, complex, and untested financial derivatives subsequently ...