It is well-known that the classical proportional-integral-derivative (PID) controller plays a fundamental role in various engineering systems. However, up to now theory can explain rationale why linear PID effectively deal with nonlinear uncertain dynamical systems and method provide explicit design formula for parameters are still lacking. This motivates our recent study on theoretical foundation of control. The main purpose this letter extend 1-D results higher dimensional improve...

Objectives:The objective of this study was to demonstrate the feasibility using noninvasive photoacoustic imaging technology along with novel semiconducting polymer nanoparticles for in vivo identifying inflammatory components carotid atherosclerosis and assessing severity inflammation mouse models.Methods Results: Healthy arteries atherosclerotic were imaged by system.Molecular probes PBD-CD36 used label cells show information imaging.In experiments, we observed maximum signal enhancement...

The hydrogen evolution reaction (HER), as an efficient process of converting various energies into high-purity hydrogen, has attracted much attention from both scientific research studies and industrial productions. However, its wide applications still confront considerable difficulties, for example, bubble coverage on the electrode dispersion in electrolyte, which will disturb current distribution isolate active sites ions resulting a high overpotential large Ohmic voltage drop....

Bessel ultrasound fields theoretically offer a highly focused spot with infinite depth of focus, but practical aperture constraints limit their focal depth. Laser-induced utilizes optical methods to extend and achieve points, offering promising strategy for generating modulating fields. Here, we propose tunable ring-shaped beam create adjust fields, enabling adaptability across varied applications. We integrate lenses, absorbing materials, single-element transducer into compact probe...

The core idea of prediction-based anomaly detection is to identify anomalies by constructing a prediction model and comparing predicted observed values. However, most existing traffic flow models primarily focus on spatio-temporal features, neglecting comprehensive frequency-domain feature learning. Additionally, accuracy often limited insufficient error analysis. To address this limitation, paper proposes method for data with multi-domain extraction. built as follows: first, Bidirectional...

Myocardial infarctions are most often caused by the so-called vulnerable plaques, usually featured as non-obstructive lesions with a lipid-rich necrotic core, thin-cap fibroatheroma, and large plaque size. The identification quantification of these characteristics keys to evaluate vulnerability. However, single modality intravascular methods, such ultrasound, optical coherence tomography photoacoustic, can hardly achieve all comprehensive information satisfy clinical needs. In this paper,...

The endometrium microvessel system, responsible for supplying oxygen and nutrients to the embryo, holds significant importance in evaluating endometrial receptivity (ER). Visualizing this system directly can significantly enhance ER evaluation. Currently, clinical methods like Narrow-band hysteroscopy Color Doppler ultrasound are commonly used uterine blood vessel examination, but they have limitations depth or resolution. Endoscopic Photoacoustic Imaging (PAE) has proven effective...

We have demonstrated for the first time, to our knowledge, use of optical coherence tomography (OCT) as an analytical tool nondestructively characterizing individual paint layer thickness multiple layered automotive paints. A graph-based segmentation method was used automatic analysis distribution top layers solid color The thicknesses measured with OCT were in good agreement microscope and ultrasonic techniques that are current standard automobile industry. Because its high axial resolution...

Intravascular photoacoustic (IVPA) imaging technology enables the visualization of pathological characteristics (such as inflammation activities, lipid deposition) artery wall. Blood flushing is a necessary step in improving quality vivo IVPA imaging. But limited speed systems stretches their time, which an important obstacle clinical translations. In this paper, we report improvement IVPA/IVUS to 100 frames per second. The high-speed demonstrated rabbit , visualizing nanoparticles...

Automotive coating systems are designed to protect vehicle bodies from corrosion and enhance their aesthetic value. The number, size orientation of small metallic flakes in the base coat paint has a significant effect on appearance automotive bodies. It is important for quality assurance (QA) be able measure properties these flakes, which approximately 10μm radius, yet current QA techniques limited measuring layer thickness. We design develop time-domain (TD) full-field (FF) optical...

Background: Low-dose computed tomography (LDCT) scans can effectively reduce the radiation damage to patients, but this is highly detrimental CT image quality. Deep convolutional neural networks (CNNs) have shown their potential in improving LDCT However, conventional CNN-based approaches rely fundamentally on convolution operations, which are ineffective for modeling correlations among nonlocal similar structures and regionally distinct statistical properties images. This deficiency hampers...

Optical coherence elastography (OCE) is a functional extension of optical tomography (OCT). It offers high-resolution elasticity assessment with nanoscale tissue displacement sensitivity and high quantification accuracy, promising to enhance diagnostic precision. However, in vivo endoscopic OCE imaging has not been demonstrated yet, which needs overcome key challenges related probe miniaturization, excitation efficiency speed. This study presents novel system, achieving the first . The...

The measurement of the thicknesses layers is important for quality assurance industrial coating systems. Current techniques only provide a limited amount information. Here, we show that spectral domain Line Field (LF) Optical Coherence Tomography (OCT) able to return user cross sectional B-Scan image in single shot with no mechanical moving parts. To reliably extract layer from such images automotive paint systems, present an automatic graph search segmentation algorithm. algorithm works...

Female infertilities are highly associated with poor endometrial receptivity. A receptive endometrium is generally characterized by the normal uterine cavity, intact surface, appropriate thickness, and echo pattern. Acquiring comprehensive structural information prerequisite of assessment, which beyond ability any single-modality imaging method. In this paper, we introduce a custom-made intrauterine dual-modality (OCT/ultrasound) endoscopic system achieve in vivo rabbit uteri, for first time...

Optical coherence tomography (OCT) image processing can provide information about the uterine cavity structure, such as endometrial surface roughness, which is important for diagnosis of lesions. The accurate segmentation OCT images a key step processing. We proposed an EA-UNet-based model that uses U-Net network structure with multi-scale attention mechanism to improve accuracy images. E(ECA-C) module introduces convolutional layer combined ECA instead max pool, reduces loss feature...

Timely forecasting of the kick risk after a well can reduce waiting time shut-in and provide more for killing operations. At present, multiphase flow model is used to simulate forecast pit gain casing pressure. Due complexity downhole conditions, calculation difficult. In this paper, series analysis method excavate information contained in time-varying data A based on pressure established kick. To divide level achieve before shut-in, plates are established. Three cases one case studied,...

The multiple layer paint systems on modern cars serve two end purposes, they firstly protect against corrosion and secondly give the desired visual appearance. To ensure consistent protection appearance, suitable Quality Assurance (QA) measures final product are required. Various (layer thickness consistency, composition, flake statistics, surface profile dryness) parameters of importance, each with specific techniques that can measure one or some them but no technique all most them. Optical...

Terahertz pulsed imaging (TPI) and Optical Coherence Tomography (OCT) are two powerful techniques that can be used to non-destructively acquire high quality three-dimensional images from within scattering media. In this paper, we report experimental results of using TPI infrared OCT for characterizing automobile car paints. We found the individual layer thickness all four layers real-world paint samples could determined measurements whilst only image top paints albeit with a better...

It is widely known that the classical PID (proportional-integral-derivative) controller still plays a dominating role in engineering control systems, and most of theoretical studies on focus linear deterministic systems. In this paper, we will extend authors recent investigation by considering additional uncertainties input channel, try to establish foundation for class high-dimensional nonlinear stochastic systems with structural consisting dynamics uncertainty, diffusion uncertainty...

The photoacoustic effect-based sO2 measurement is attracting more and attention due to its non-invasiveness accuracy. Compared with the linear dual-wavelength method, based on single-wavelength excitation can be potentially applied simplified system construction. However, methods proposed in previous studies decreases safety or lacks in-depth resolution. This paper proposes a novel method Grüneisen-relaxation (GR) nonlinear effects. It avoids high fluence maintaining resolution obtains...