Laser footprint size and beam divergence angle tuning was found to affect LiDAR data accuracy and measurement precision because of beam axis shifting. The laser beam divergence angle is generally tunable in modern LiDAR systems in order to adapt to different application scenarios. Beam divergence angle can either be switched from one position to the other (i.e. 0.3mRad / 0.8 mRad), or be tuned ...

The problem of structural deformation monitoring has always been a research hotspot in engineering architecture. Research on is the main way to solve risk construction. Based using close-range photogrammetry technology monitor deformation, combining with image recognition collect and process data, conditions direct linear transformation collinear equation calculate based extracted coordinates m...

In layered samples which exhibit a bulk quantum Hall effect (QHE), a two-dimensional (2D) surface “sheath” of gapless excitations is expected. These excitations comprise a novel 2D chiral quantum liquid which should dominate the low temperature transport along the field (z axis). For the integer QHE, we show that localization effects are completely absent in the “sheath,” giving a metallic z-ax...

Based on a theoretical framework that derives information flows associated to economic and social transactions, intersectoral, point-to-point telecommunication flow functions are specified and estimated, using a very large data base on intra-LATA toll calls and a simultaneous equation estimation procedure that accounts for the endogeneity of reverse call flows. The effects of prices, distances,...

We present a study on utilizing eye movements for acoustic source localization tests. Test subjects had to indicate the presumed location of a hidden sound source with their head unconstrained by either fixating or additionally pointing with a laser pointer. Stimuli varied only in the horizontal plane from +45° (left) to -45° (right). Fixation error was always smaller than error in pointing and...

We propose a key-frame-based depth propagation method considering movement on the z-axis. First, a homography matrix is obtained through the feature points between points. Through this homography matrix information, a movement of objects or cameras is inferred in the direction of the z axis, thereby creating a depth map that compensates the movement. Then, bilateral filtering is executed to cre...

In this paper, we demonstrate a miniature magnetic-force-based, three-axis, AC magnetic sensor with piezoelectric/vibrational energy-harvesting functions. For magnetic sensing, the sensor employs a magnetic-mechanical-piezoelectric configuration (which uses magnetic force and torque, a compact, single, mechanical mechanism, and the piezoelectric effect) to convert x-axis and y-axis in-plane and...

Four experiments investigated spatial updating in a familiar environment. Participants learned locations of objects in a rectangular or a round room from a single stationary viewing position, walked to the center of the layout, and turned to appropriate facing directions before making pointing judgments. Locomotion was visually guided. Participants made judgments of relative direction (e.g., "I...