Browsing FAS Scholarly Articles by FAS Department "Engineering and Applied Sciences"
Now showing items 41-60 of 2626
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Acquisition and Rendering of Transparent and Refractive Objects
(Association for Computing Machinery, 2002)This paper introduces a new image-based approach to capturing and modeling highly specular, transparent, or translucent objects. We have built a system for automatically acquiring high quality graphical models of objects ... -
Action Potential Initiation in the Hodgkin-Huxley Model
(Public Library of Science, 2009)A recent paper of B. Naundorf et al. described an intriguing negative correlation between variability of the onset potential at which an action potential occurs (the onset span) and the rapidity of action potential initiation ... -
The Activation Strain Tensor: Nonhydrostatic Stress Effects on Crystal-Growth Kinetics
(American Physical Society, 1991)The solid-phase epitaxial-growth rate of crystalline Si from the amorphous Si on the tensile side is greater than on the compressive side of elastically bent wafers, in marked contrast to the behavior observed under ... -
Activation Volume for Arsenic Diffusion in Germanium
(American Institute of Physics, 1996)We have measured the effect of pressure on As diffusion in Ge. Diffusion anneals on ion-implanted samples were carried out in a high-temperature diamond anvil cell using fluid argon as a clean, hydrostatic pressure medium. ... -
Activation Volume for Phosphorus Diffusion in Silicon and Si0.93Ge0.07
(American Institute of Physics, 2005)The hydrostatic pressure dependence of the diffusivity of P in compressively strained Si<sub>0.93</sub>Ge<sub>0.07</sub> and unalloyed Si has been measured. In both cases the diffusivity is almost independent of pressure, ... -
Active Elastohydrodynamics of Vesicles in Narrow Blind Constrictions
(American Physical Society (APS), 2017-11-10)Fluid-resistance limited transport of vesicles through narrow constrictions is a recurring theme in many biological and engineering applications. Inspired by the motor-driven movement of soft membrane-bound vesicles into ... -
Active learning of intuitive control knobs for synthesizers using gaussian processes
(Association of Computing Machinery, 2014)Typical synthesizers only provide controls to the low-level parameters of sound-synthesis, such as wave-shapes or filter envelopes. In contrast, composers often want to adjust and express higher-level qualities, such as ... -
Active mixing of complex fluids at the microscale
(Proceedings of the National Academy of Sciences, 2015)Mixing of complex fluids at low Reynolds number is fundamental for a broad range of applications, including materials assembly, microfluidics, and biomedical devices. Of these materials, yield stress fluids (and gels) pose ... -
Adaptation and generalization in acceleration-dependent force fields
(Springer Science + Business Media, 2005)Any passive rigid inertial object that we hold in our hand, e.g., a tennis racquet, imposes a field of forces on the arm that depends on limb position, velocity, and acceleration. A fundamental characteristic of this field ... -
Adapting Sequence Models for Sentence Correction
(Association for Computational Linguistics, 2017)In a controlled experiment of sequence-to-sequence approaches for the task of sentence correction, we find that character-based models are generally more effective than word-based models and models that encode subword ... -
Adapting to Agents' Personalities in Negotiation
(2005)To establish cooperative relationships, agents must be willing to engage in helpful behavior and to keep their commitments with agents who reciprocate this behavior. However, in uncertain and dynamic environments, it is ... -
An Adaptive Agent for Negotiating with People in Different Cultures
(Association for Computing Machinery, 2011)The rapid dissemination of technology such as the Internet across geographical and ethnic lines is opening up opportunities for computer agents to negotiate with people of diverse cultural and organizational affiliations. ... -
Adaptive Algorithms for Sparse Nonlinear Channel Estimation
(2009)In this paper, we consider the estimation of sparse nonlinear communication channels. Transmission over the channels is represented by sparse Volterra models that incorporate the effect of Power Amplifiers. Channel estimation ... -
Adaptive click-and-cross
(Association of Computing Machinery, 2014)Computer users with impaired dexterity often have difficulty accessing small, densely packed user interface elements. Past research in software-based solutions has mainly employed two approaches: modifying the interface ... -
Adaptive fluid-infused porous films with tunable transparency and wettability
(Nature Publishing Group, 2013)Materials that adapt dynamically to environmental changes are currently limited to two-state switching of single properties, and only a small number of strategies that may lead to materials with continuously adjustable ... -
Adaptive Greedy Algorithm With Application to Nonlinear Communications
(Institute of Electrical and Electronics Engineers, 2010)Greedy algorithms form an essential tool for compressed sensing. However, their inherent batch mode discourages their use in time-varying environments due to significant complexity and storage requirements. In this paper ... -
Adaptive Limited-Supply Online Auctions
(Association for Computing Machinery, 2004)We study a limited-supply online auction problem, in which an auctioneer has k goods to sell and bidders arrive and depart dynamically. We suppose that agent valuations are drawn independently from some unknown distribution ... -
An adaptive reduction algorithm for efficient chemical calculations in global atmospheric chemistry models
(Elsevier BV, 2010)We present a computationally efficient adaptive method for calculating the time evolution of the concentrations of chemical species in global 3-D models of atmospheric chemistry. Our strategy consists of partitioning the ... -
Additionality of Wind Energy Investments in the U.S. Voluntary Green Power Market
(Elsevier, 2014)In the United States, electricity consumers are told that they can “buy” electricity from renewable energy projects, versus fossil fuel-fired facilities, through participation in voluntary green power markets. The marketing ... -
Addressing Underspecified Lineage Queries on Provenance
(2011)State-of-the-art provenance systems accumulate data over time, creating deep lineage trees. When queried for the lineage of an object, these systems can return excessive results due to the longevity and depth of their ...