ABSTRACT The dynamics of the acoustic streaming and the acoustic positioning performance in an ultrasound-actuated multiwell microplate are investigated by two different ultrasonic frequency actuation schemes: Frequency-modulation and single-frequency actuation. Our results show a significant decrease in size of the field of view when using frequencymodulation compared to single-frequency actua...

The frequency-tuning and -control properties of monolithic doubly resonant optical parametric oscillators are analyzed for stable single-mode pump radiation. Single-axial-mode operation is observed on the idler and the signal for both pulsed and continuous pumping. Projections are made for tuning-parameter tolerances that are required for maintenance of stable single-frequency oscillation. Cont...

Management of marine resources is supported by extensive use of acoustic data. Ecosystem management requires simultaneous observations of marine organisms and their interactions. The use of quantitative sonar combined with vertical oriented echo sounders is essential: the multi-frequency echosounder data is used to remotely identify acoustic scattering categories and the spatial distribution of...

this paper investigates the lateral vibration of single-layered graphene sheets based on a new theory called doublet mechanics with a length scale parameter. after a brief reviewing of doublet mechanics fundamentals, a sixth order partial differential equation that governs the lateral vibration of single-layered graphene sheets is derived. using doublet mechanics, the relation between natural f...

The International Conference on Localization and Global Navigation Satellite Systems (ICLGNSS) 2011 was held on June 29-30, 2011 in Tampere, Finland. This was the inaugural issue of an annual localization event. ICL-GNSS is devoted to all aspects of localization, positioning and navigation, whether using satellites, communication network signals, inertial sensors, or any signal of opportunity. ...

The Global Positioning System (GPS) can be utilised in a wide range of deformation monitoring applications. During the past few years a methodology has been developed for processing data collected by GPS networks consisting of a mixed set of single-frequency and dual-frequency receivers. The strategy is to deploy a few permanent GPS stations with dual-frequency, geodetic-grade receivers surroun...

The coming decade will bring a proliferation of Global Navigation Satellite Systems (GNSSs) that are likely to enable a much wider range of demanding applications compared to the current GPS-only situation. One such important area of application is single-frequency real-time kinematic (RTK) positioning. Presently, however, such systems lack real-time performance. In this contribution we analyze...