Vertical hydraulic transport of particles with wide particle size distributions is a crucial process for coal physical fluidized mining. In the present study, an improved semi-resolved computational fluid dynamics (CFD)-discrete element method was developed to simulate flows distributions. this model, CFD cells allocated volume and momentum source term were defined as dependent domain influential domain, respectively. On basis, two-way expansion one-way adopted liquid–solid simulation coarse...

Background and aim Long term high-dose erythropoietin (EPO) had been reported inducing the formation of abdominal aortic aneurysm (AAA) in mice. When using this model, we found that EPO treated mice showed significant splenomegaly. This is an interesting phenomenon, its mechanism has not reported. Therefore, study aims to explore mechanism. Methods C57BL/6 were given intraperitoneal injection recombinant human at 10000 IU/kg/day, control with normal saline (vehicle). After 3 weeks, spleens...

This study proposes a visual tracking system with 500-fps image processing that can detect and track fast-moving appearance-varying target in 360-degree-field of view (FOV) from high-spatial-resolution images. The consists high-speed camera, pan-tilt Galvano-mirror system, mirror-drive pan control 360-degree-rotational capacity. Omnidirectional remote object using complex features becomes possible due to the acquisition images via system. We introduce an intelligent high frame rate (HFR)...

We prepared triangular copper nanoplates and investigated its growth mechanism tribological characteristics as grease additive.

This paper presents a novel dual-camera system that can simultaneously capture zoomed-in images using an ultrafast pan-tilt camera and fixed wide-view deep learning methods. An function as multiple virtual cameras by synchronizing high-frame-rate zooming-view mirror device switch over 500 different views in second. A obtain view which targets to be tracked are captured low resolution then recognized processing the methods at rate of dozens frames per Based on positions all targets, camera,...

This study realizes the activity sensing of honeybees flying in a natural outdoor environment by inspecting pixel-level temporal frequency responses brightness high-frame-rate (HFR) video, computed executing shorttime Fourier transforms (STFTs) signals at all pixels. To localize multiple an HFR periodic changes pixels around wings that were flapping hundreds Hertz detected range below Nyquist frequency, which is defined as half frame rate video STFTs Vibration each honeybee identified...

This study developsan omnidirectional panoramic video system that can simultaneously observe zoom-in images at dozens of different viewpoints in a <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$360^{\circ }$</tex-math></inline-formula> field view by synchronizing hundreds frames per second shooting, with rotation tens-of-rotation-per-second mirror-rotator. When shooting scene certain exposure utilizing...

In this letter, we propose a fast mirror-drive pan-tilt target tracking system that can robustly track an object whose appearance varies in complex background at 500 fps. By assuming small image displacement between frames, which is property of high-frame rate vision, develop algorithm by hybridizing the convolutional-neural-network (CNN) based detection with template-matching (TM) operating hundreds frames per second (fps). For high-speed visual feedback, proposed remarkably reduce...

This paper describes a real-time vibration spectrum imaging system that uses pixel-level short-term Fourier transform (STFT). STFT function for high-frame-rate images at 1000 fps or greater is accelerated through its parallel-implementation on GPU-based high-speed vision system, and 512×512 peak-frequency in wide frequency band can be obtained real time more than 50 fps. The effectiveness of our method was demonstrated using the results fan, multicopter, guitar string, which had rotating...

In this paper, we develop a novel dual-camera system that can simultaneously capture zooming-in targets by combining an ultrafast pan-tilt camera and fixed wide-view camera. According to the positions of all recognized with deep learning in camera, pan tilt angles multiple cameras are controlled virtually on ultra-fast through multi-thread viewpoint control images targets. Our generate five hundred virtual different zooming views second, effectiveness our is demonstrated showing experimental...

In this study, we developed a monocular stereo tracking system to be used as marker-based, three-dimensional (3-D) motion capture system. This aims localize dozens of markers on multiple moving objects in real time by switching five hundred different views 1 s. The ultrafast mirror-drive active vision our catadioptric can accelerate series operations for multithread gaze control with video shooting, computation, and actuation within 2 ms. By between s, real-time processing marker extraction,...

In this paper, we propose a novel method for dynamics-based image-pattern recognition that can be used to inspect specified vibrating pattern by computing temporal frequency responses in time-varying brightness signals at all the pixels of high-frame-rate video sequence. The responses, which are histograms components signals, calculated using short-term Fourier transform, and they matched pixelwise with those reference determine whether specific is recognized. effectiveness our image...

This study realizes the tracking of honey bees flying in a natural scene by inspecting periodic changes brightness at pixels around their wings that were flapping hundreds Hertz high-frame-rate video. The are extracted executing short-time Fourier transforms all pixels, and detected as vibrational ones identified several labeled regions with connected component labeling, corresponding to multiple honeybees; trajectories honeybees monitored time-frequency responses flight activities. We...

This article presents a novel view and scanning-depth expansion photographic microscope using ultrafast switching mirrors high-speed vision that can simultaneously extend both the field of (FOV) range typical optical in real-time. Two switch at several hundred hertz are used for micro-gaze control via synchronization through system. The FOV be changed while maintaining constant length path by adjusting angles two mirrors, which ensures extended is within focal range. We evaluated designed...

This paper proposes an intelligent and fast tracking method for robust trackability against appearance changes. The hybridizes a correlation-based algorithm operating at hundreds of frames per second (fps) with deep learning-based recognition dozens fps. A prototype mechanical system was developed by implementing our hybridized on 500-fps vision platform. complex-shaped target can be robustly tracked the center camera view in real time controlling pan-tilt active 500 Hz visual feedback....

The clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 system is a widely used genome-editing tool with great clinical potential. However, its application limited because of low editing efficiency some target sequences and off-target effects. As this contains only the Cas9 protein single-guide RNA (sgRNA; engineered from crRNA tracrRNA), structure function these components should be studied in detail to address current needs. Consequently, we investigated structural...

In this study we propose a novel method for drone surveillance that can simultaneously analyze time-frequency responses in all pixels of high-frame-rate video. The propellers flying drones rotate at hundreds Hz and their principal vibration frequency components are much higher than those background objects. To separate the around drone's from its background, utilize these time-series features source localization with pixel-level short-time Fourier transform (STFT). We verify relationship...

In this paper, we propose a super-telephoto drone surveillance system that can search and track flying at 1 km distance or more within an area spanning hundreds of square meters. By constructing mirror-drive high-speed pan-tilt control with camera lens, remote becomes possible owing to the acquisition high spatial resolution images target objects. We adopted vibration-based localization algorithm simultaneously detect fast-rotating drone-propellers in high-frame-rate video using pixel-level...

In this study, the dynamic deflections and vibrations of a belt conveyor system operating in ironworks are observed using high-speed telephoto mirror-drive active vision that can simultaneously switch viewpoints capture magnified images at rate hundreds frames per second (fps). The captures 160 fps pan-and-tilt scan mechanism. captured as multiple high-frame-rate video images. small vibrations, belts pillars, which have peak frequencies 10 Hz or more estimated with precision dozens...

An algorithm namely the TDOA-Camberra is proposed for multi-target passive location in this paper. The uses Camberra distance to associate target data and do optimal search, then time difference of arrival (TDOA) locate multiple targets passively once from same determined. At time, as computing associating using long, improved sequential similarity detection (SSDA) added calculation order shorten association, thus increase speed location. theoretical analysis simulation experiment proves...

This study proposes a novel vision-based measurement method to capture small dynamic displacements at many points on large-scale structure. The are aligned in the depth direction so that all observable single field of view with high power zoom lens. To cope insufficient incident light and lens blur when capturing video limited large magnification, our used highly retroreflective cubes as markers, combined strong coaxial lighting device for measuring image tandem-layout images. We conducted...