For vibration mitigation in an uncertain, standalone tall building-like structure (STABLS), this paper proposes an adaptive fault-tolerant control (AFTC) approach, grounded in a fixed-time sliding mode. The method estimates model uncertainty with adaptive improved radial basis function neural networks (RBFNNs) incorporated into a broad learning system (BLS). Furthermore, an adaptive fixed-time sliding mode approach minimizes the impact of actuator effectiveness failures. This article highlights the fixed-time performance of the flexible structure, guaranteed both theoretically and practically, with regards to uncertainty and actuator effectiveness. In addition, the method ascertains the smallest amount of actuator health when its status is unclear. Empirical and computational results unequivocally support the efficiency of the proposed vibration suppression method.
Remote monitoring of respiratory support therapies, such as those used in COVID-19 patients, is provided by the open and budget-friendly Becalm project. The Becalm system, incorporating a case-based reasoning approach to decision-making, features a low-cost, non-invasive mask for remote monitoring, detection, and explanation of respiratory patient risk. Concerning remote monitoring, this paper first introduces the mask and its associated sensors. Later in the discourse, the system is explained, which is adept at identifying unusual events and providing timely warnings. The detection process hinges on the comparison of patient cases that incorporate a set of static variables plus a dynamic vector generated from the patient time series data captured by sensors. Finally, bespoke visual reports are created to elaborate on the triggers of the warning, data patterns, and the patient's situation for the medical practitioner. We utilize a synthetic data generator that simulates the clinical evolution of patients based on physiological characteristics and factors found in healthcare literature in order to evaluate the case-based early-warning system. This generation method, verified by a practical dataset, demonstrates the reasoning system's ability to handle noisy, incomplete data, fluctuating thresholds, and potentially life-threatening circumstances. For the proposed low-cost solution to monitor respiratory patients, the evaluation showed encouraging results with an accuracy of 0.91.
A critical area of research focusing on automatically detecting eating actions with wearable devices aims at furthering our understanding and improving our intervention abilities in how people eat. Various algorithms, following their creation, have been evaluated for their accuracy. For practical use, the system's accuracy in generating predictions must be complemented by its operational efficiency. Despite the increase in research into precisely identifying ingestion actions with wearable technology, a considerable number of these algorithms are unfortunately energy-inefficient, thus hindering their practical application for continuous, real-time diet monitoring directly on devices. Accurate intake gesture detection using a wrist-worn accelerometer and gyroscope is achieved by this paper's presentation of an optimized, multicenter classifier, structured around templates. This design minimizes inference time and energy consumption. An intake gesture counting smartphone application, CountING, was created and its practicality was validated by comparing our algorithm to seven existing top-tier methods using three public datasets (In-lab FIC, Clemson, and OREBA). On the Clemson dataset, our method exhibited the highest accuracy (81.60% F1-score) and exceptionally swift inference (1.597 milliseconds per 220-second data sample), outperforming other approaches. In trials involving a commercial smartwatch for continuous real-time detection, the average battery life of our approach was 25 hours, marking an improvement of 44% to 52% over contemporary approaches. TVB-3664 Our approach, using wrist-worn devices in longitudinal studies, demonstrates an effective and efficient methodology for real-time intake gesture detection.
Pinpointing abnormal cervical cells is a formidable assignment, as the morphological variations between abnormal and healthy cells are typically subtle. In diagnosing the status of a cervical cell—normal or abnormal—cytopathologists employ adjacent cells as a standard for determining deviations. In order to reproduce these actions, we propose analyzing contextual links to augment the performance of cervical abnormal cell identification. Exploiting both intercellular relationships and cell-to-global image connections is crucial for boosting the characteristics of each region of interest (RoI) suggestion. Two modules, the RoI-relationship attention module (RRAM) and the global RoI attention module (GRAM), were developed and a study into their combination approaches was carried out. Employing Double-Head Faster R-CNN with a feature pyramid network (FPN) as our foundation, we integrate our RRAM and GRAM modules to empirically demonstrate the efficacy of these proposed components. Evaluations on a sizable cervical cell detection dataset indicated that the inclusion of RRAM and GRAM technologies yielded a significant improvement in average precision (AP) relative to the baseline methods. Our cascading strategy for RRAM and GRAM achieves superior results when contrasted with the prevailing cutting-edge methods. Beside this, the suggested methodology for enhancing features facilitates image and smear-level classification. The code, along with the trained models, is freely available on GitHub at https://github.com/CVIU-CSU/CR4CACD.
Early-stage gastric cancer treatment decisions are effectively aided by gastric endoscopic screening, thereby minimizing mortality linked to gastric cancer. Artificial intelligence, while holding significant promise for assisting pathologists with the assessment of digital endoscopic biopsies, currently faces limitations in its application to the process of planning gastric cancer treatment. This practical AI-based decision support system facilitates the five sub-classifications of gastric cancer pathology, allowing direct application to standard gastric cancer treatment protocols. Mimicking the intricate histological understanding of human pathologists, the proposed framework leverages a multiscale self-attention mechanism within a two-stage hybrid vision transformer network to efficiently distinguish multiple types of gastric cancer. The multicentric cohort tests conducted on the proposed system yielded diagnostic performance exceeding 0.85 class average sensitivity, showcasing its reliability. Beyond that, the proposed system exhibits exceptional generalization capabilities in the domain of gastrointestinal tract organ cancers, achieving the highest average sensitivity among current architectures. The observational study highlights that AI-assisted pathologists, in terms of diagnostic sensitivity, surpass human pathologists, achieving this within the context of quicker screening processes. Our research demonstrates that the proposed artificial intelligence system demonstrates a high degree of potential for providing preliminary pathological opinions and aiding the selection of optimal gastric cancer treatment plans in actual clinical settings.
Intravascular optical coherence tomography (IVOCT) utilizes backscattered light for the creation of high-resolution, depth-resolved images showcasing the structural details of coronary arteries. Quantitative attenuation imaging is pivotal in providing an accurate picture of tissue components, enabling the identification of vulnerable plaques. A deep learning methodology for IVOCT attenuation imaging is presented herein, based on a multiple scattering model of light transport. A physics-guided deep network, QOCT-Net, was engineered to pinpoint pixel-level optical attenuation coefficients from standard IVOCT B-scan images. Simulation and in vivo data sets served as the foundation for the network's training and testing. hepatic antioxidant enzyme The attenuation coefficient estimations exhibited superior performance, as confirmed visually and quantitatively by image metrics. The state-of-the-art non-learning methods are surpassed by at least 7%, 5%, and 124% improvements, respectively, in structural similarity, energy error depth, and peak signal-to-noise ratio. Characterizing tissue and identifying vulnerable plaques is potentially enabled by this method, through high-precision quantitative imaging.
In 3D facial reconstruction, orthogonal projection has frequently been used in place of perspective projection, streamlining the fitting procedure. When the distance between the camera and the face is sufficiently extensive, this approximation yields satisfactory results. small bioactive molecules In contrast, for instances featuring a face positioned extremely near the camera or traversing along the camera's axis, these techniques are susceptible to errors in reconstruction and instability in temporal matching, which are triggered by the distortions due to perspective projection. Our objective in this paper is to tackle the issue of reconstructing 3D faces from a single image, considering the effects of perspective projection. To reconstruct a 3D facial shape in canonical space and to learn correspondences between 2D pixels and 3D points, a deep neural network, the Perspective Network (PerspNet), is proposed. The learned correspondences allow estimation of the 6 degrees of freedom (6DoF) face pose, a representation of perspective projection. Beyond that, a substantial ARKitFace dataset is presented, enabling the training and evaluation of 3D face reconstruction techniques under perspective projections. This dataset encompasses 902,724 2D facial images accompanied by ground truth 3D facial meshes and annotated 6 degrees of freedom pose parameters. Our experimental results unequivocally indicate that our approach achieves superior performance compared to current state-of-the-art methods. https://github.com/cbsropenproject/6dof-face provides access to the code and data for the 6DOF face.
Over the past few years, numerous computer vision neural network architectures, including visual transformers and multi-layer perceptrons (MLPs), have been developed. A transformer, leveraging its attention mechanism, can demonstrate superior performance compared to a conventional convolutional neural network.