Browsing Faculty of Arts and Sciences by Title
Now showing items 6408-6427 of 24540
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Enabling Geographic Research Across Disciplines: Building an Institutional Infrastructure for Geographic Analysis at Harvard University
(Informa UK Limited, 2011)Founded in 1818, the Harvard Map Collection (HMC) is the oldest map collection in America, holding 400,000 maps, more than 6,000 atlases and thousands of reference books. HMC has a strong commitment to digital resources ... -
Enabling High Performance, Efficient, and Sustainable Deep Learning Systems At Scale
(2022-09-15)The world has witnessed an exponential rise in AI, particularly deep learning-based engines, over the last decade. These deep learning-based AI engines form the backbone of the modern Internet, determining how we interact ... -
Enabling Martian Habitability With Silica Aerogel via the Solid-State Greenhouse Effect
(Springer Science and Business Media LLC, 2019-07-15)The low temperatures and high ultraviolet radiation levels at the surface of Mars today currently preclude the survival of life anywhere except perhaps in limited subsurface niches4. Several ideas for making the Martian ... -
Enabling Sharing in Auctions for Short-Term Spectrum Licenses
(Cambridge University Press, 2013)Wireless spectrum is a valuable and scarce resource that currently suffers from under-use because of the dominant paradigm of exclusive-use licensing. We propose the SATYA auction (Sanskrit for truth), which allows short-term ... -
Enabling Spectrum Sharing in Secondary Market Auctions
(Institute of Electrical and Electronics Engineers, 2013)Wireless spectrum is a scare resource, but in practice much of it is under-used by current owners. To enable better use of this spectrum, we propose an auction approach to dynamically allocate the spectrum in a secondary ... -
Enamel thickness in Asian human canines and premolars
(Anthropological Society of Nippon, 2010)Dental enamel thickness continues to feature prominently in anthropological studies of ape and human evolution, as well as studies of preventative oral care and treatment. Traditional studies of enamel thickness require ... -
Enamel Thickness in Bornean and Sumatran Orangutan Dentitions
(Wiley, 2012)Dental enamel thickness has received considerable attention in ecological models of the adaptive significance of primate morphology. Several authors have theorized that the degree of enamel thickness may reflect selective ... -
Enantioselective Acylation of Silyl Ketene Acetals through Fluoride Anion-Binding Catalysis
(American Chemical Society, 2011)A highly-enantioselective acylation of silyl ketene acetals with acyl fluorides has been developed to generate useful \(\alpha\), \(\alpha\)-disubstituted butyrolactone products. This reaction is promoted by a new thiourea ... -
Enantioselective Alkali Metal Catalysis
(2023-12-19)In Chapter 1, we chronicle the discovery of enantioselective, catalytic 1,2-boronate rearrangements for the synthesis of α-chloro pinacol boronic esters from readily available boronic esters and dichloromethane. Chiral ... -
Enantioselective Intramolecular Openings of Oxetanes Catalyzed by (salen)Co(III) Complexes: Access to Enantioenriched Tetrahydrofurans
(American Chemical Society, 2009) -
Enantioselective Selenocyclization via Dynamic Kinetic Resolution of Seleniranium Ions by Hydrogen-Bond Donor Catalysts
(American Chemical Society, 2014)Highly enantioselective selenocyclization reactions are promoted by the combination of a new chiral squaramide catalyst, a mineral acid, and an achiral Lewis base. Mechanistic studies reveal that the enantioselectivity ... -
Enantioselective Synthesis of (+)-Cephalostatin 1
(American Chemical Society, 2010)This Article describes an enantioselective synthesis of cephalostatin 1. Key steps of this synthesis are a unique methyl group selective allylic oxidation, directed C−H hydroxylation of a sterol at C12, Au(I)-catalyzed ... -
Enantioselective Synthesis of Stereogenic-at-Phosphorus(V) Compounds via Hydrogen-Bond-Donor Catalysis
(2023-04-18)In Chapter 1, we review organocatalytic approaches for the enantioselective synthesis of stereogenic-at-P(V) compounds. General organocatalytic activation modes used for constructing P(V) stereocenters are discussed, ... -
Enantioselective Total Synthesis of Hyperforin
(American Chemical Society, 2013)A modular, 18-step total synthesis of hyperforin is described. The natural product was quickly accessed using latent symmetry elements, whereby a group-selective, Lewis acid-catalyzed epoxide-opening cascade cyclization ... -
Encapsulated liquid sorbents for carbon dioxide capture
(Nature Publishing Group, 2015)Drawbacks of current carbon dioxide capture methods include corrosivity, evaporative losses and fouling. Separating the capture solvent from infrastructure and effluent gases via microencapsulation provides possible ... -
Encoding and Decoding Mechanosensory Information on Multiple Timescales
(2015-05-13)Natural stimuli contain information on multiple timescales, ranging from milliseconds to seconds, or longer. Therefore, sensory circuits must be able to encode a wide range of frequencies. A general strategy is to dedicate ... -
Encoding Processes during Retrieval Tasks
(MIT Press - Journals, 2001)Episodic memory encoding is pervasive across many kinds of task and often arises as a secondary processing effect in tasks that do not require intentional memorization. To illustrate the pervasive nature of information ... -
Encoding-Specific Effects of Social Cognition on the Neural Correlates of Subsequent Memory
(Society for Neuroscience, 2004)To examine whether social cognition recruits distinct mental operations, we measured brain activity during social (“form an impression of this person”) and relatively nonsocial (“remember the order in which person information ... -
Encore!: Homecoming Recitals in Christian South Korea
(Muse - Johns Hopkins University Press, 2012)"Homecoming Recitals" (kwiguk tokch'anghoe) in South Korea are events in which singers of European-style classical music, after having studied and worked professionally abroad, return home and are integrated into the social ...