Voice interface responses based on prior user interactions

Voice interfaces, such as those provided by virtual assistant applications on smartphones, smart speakers, and other devices utilize natural language when providing responses to user queries. Per techniques of this disclosure, user interaction patterns are used to generate natural language responses to queries posed over a voice user interface. With user permission and express consent, data that pertain to prior user interaction, e.g., text entry such as search terms entered; other input operations such as clicks, taps, swipes, mouse hovers; viewports for the user, etc. are obtained. For ease of interaction, such permission is obtained, e.g., at initial setup, and is modifiable. Such data is analyzed to derive insight into context-based topics of interest to users. User preferences gathered across multiple contexts are utilized to generate natural language responses for voice-based user interaction

Improvement of thermal efficiency of a radial heat sink with a surrounding structure

This study proposed a radial heat sink with a surrounding structure as a cooling system for light-emitting diode (LED) lighting with a circular base. The radial heat sink with long and middle fins was considered. Heat flow and radiative heat transfer were simulated numerically and the numerical model was validated experimentally. Natural convection heat transfer at the heat sink can be improved by controlling the air flow pattern. In this study, the surrounding structure increased the velocity of the inlet air around the heat sink due to the narrow air inlet surface, allowing the cooling air to move to the center of the heat sink. The effects of the material used to make the surrounding structure and the surface treatment of the heat sink were also analyzed. The results showed that the thermal efficiency of the radial heat sink was improved by up to 40% following installation of the chimney-shaped surrounding structure. The material used to make the surrounding structure did not influence the ability of the heat sink to dissipate heat. This research is expected to be helpful in the development of high-power LED lighting with a natural cooling system.Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016

Thermal performance of a scaled-up louvered fin heat exchanger with unequal louver pitch

We analyzed the thermal performance of louvered fin heat exchanger with equal and unequal louver pitch which continuously increased by 20% from air inlet area to the redirection region and difference of thermal performance of the louvered fin heat exchanger with unequal louver pitch was compared with that of equal louver pitch. The frost blocking of the spaces between louvers at front side of the louvered fin heat exchanger with unequal louver pitch was delayed and the time, the heat transfer rate of louvered fin heat exchanger reached 50% of the maximum heat transfer rate, of the unequal louver pitch louvered fin heat exchanger was also delayed than that of the equal louver pitch louvered fin heat exchanger. The operating time of louvered fin heat exchanger with unequal louver pitch was longer than that of equal louver pitch and the total heat transfer until reaching 50% of the maximum heat transfer rate increased at 18% than that of equal louver pitch.Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016

Common-path three-dimensional diffraction optical tomography

Disclosed are a three-dimensional diffraction optical microscopy of a common optical path which can both measure three-dimensional refractivity distribution, and the film vibration of a sample. The three-dimensional diffraction optical microscopy of a common optical path comprises: a light source (101) for radiating a beam; a lens unit for changing an incident angle incident in the sample of the beam, and compensating an optical axis changed by changing the incident angle; a camera unit for measuring an interference fringe between beams transmitted the sample; and an analyzing unit for calculating three-dimensional refractivity distribution of the sample based on an interference pattern between the beams, and analyzing the film vibration of the sample.COPYRIGHT KIPO 201

Quantitative phase imaging and spectroscopy techniques for the study of sickle cell diseases

We report the characterization of all the relevant biomechanical properties of individual red blood cells with sickle cell disease using non-invasive quantitative phase imaging and spectroscopy techniques with a previously-validated RBC membrane model

Ex Situ and in Situ Surface Plasmon Monitoring of Temperature-Dependent Structural Evolution in Galvanic Replacement Reactions at a Single-Particle Level

The galvanic replacement reaction has recently been established as a standard protocol to create complex hollow structures with various compositions and morphologies. In the present study, the structural evolution of Ag nanocubes with Au precursors is monitored at the single-particle level by means of ex situ and in situ characterization tools. We explore two important features distinct from previous observations. First, the peak maximum of localized surface plasmon resonance (LSPR) spectra abruptly shifts at the initial stage and reaches a steady wavelength of ∼600 nm; however, the structure continuously evolves to yield a nanobox even during the late stages of the reaction. This steady wavelength results from a balance of the LSPR between the red-shift by the growth of the inner cavity and the blue-shift by the deposition of Au on the interior, as confirmed by theoretical simulations. Second, the change in morphology at different temperatures is first analyzed by both ex situ and in situ monitoring methods. The reaction at 25°C forms granules on the surface, whereas the reaction at 60°C provides flat and even surfaces of the hollow structures due to the large diffusion rate of Ag atoms in Au at a higher temperature. These plasmon-based monitoring techniques have great potentials to investigate various heterogeneous reaction mechanisms at the single-particle level. (Graph Presented). © 2015 American Chemical Society1561sciescopu