Benefiting from its effectiveness in subspace segmentation, low-rank representation (LRR) and variations have many applications computer vision pattern recognition, such as motion image saliency detection, semisupervised learning. It is known that the standard LRR can only work well under assumption all subspaces are independent. However, this cannot be guaranteed real-world problems. This paper addresses problem provides an extension of LRR, named structure-constrained (SC-LRR), to analyze...

The locus coeruleus (LC)-prefrontal cortex (PFC) circuitry is crucial for cognition, planning, posture and mobility. This study examines the role of norepinephrine (NE) in elucidating neurobiological basis age-related cognitive motor declines. Aged mice exhibited reduced spatial learning, impaired memory, decreased physical endurance, notable changes locomotor behavior. neurochemical foundations these deficits were investigated through fast-scan cyclic voltammetry to measure NE release PFC...

Abstract Aim The locus coeruleus (LC) is one of the earliest brain regions affected by phosphorylated tau (p‐tau) in Alzheimer's disease (AD). Using P301S mouse model, we investigated temporal progression pathology and its functional consequences. Methods Immunohistochemistry was used to assess p‐tau deposition LC noradrenergic neurons at 2–3 5–6 months. Electrophysiological recordings evaluated neuronal hyperexcitability, measuring membrane potential, rheobase, spontaneous action potential...

Here, we report on a composite nanomechanical resonant magnetometer with magnetoelastic thin film integrated the surface of bulk acoustic resonator (FBAR). By exploiting delta-E effect and resonance characteristic in piezoelectric film, theoretically experimentally demonstrate capability to realize ultrahigh frequency excellent magnetic field sensitivity such configuration, thereby greatly improving limit detection weak field. The proposed FBAR-based achieves maximum 137 kHz/Oe...

Blood viscosity measurements are crucial for the diagnosis of cardiovascular and hematological diseases. Traditional blood have obvious limitations because their expensive equipment usage large sample consumption. In this study, was measured by oscillating circuit method impedance analysis based on single QCM. addition, effectiveness two methods with high precision less is proved experiments. Moreover, compared to result from a standard rotational viscometer, maximum relative errors proposed...

Deep space exploration has significant meaning both in science and economy; however, it is very hard to obtain the relevant information due its complexity. In this study, autonomous celestial navigation method utilised. To achieve high accuracy of a deep environment, improved filtering algorithm–spherical simplex unscented particle filter (SSUPF) implemented, which adopts spherical Kalman (SSUKF) algorithm generate important sampling density (PF). According simulation results, authors derive...

Co-located multiple input output (MIMO) radar is one kind of new style radar, whose transmitting waveforms each sub-array are orthogonal to other. Compared with phased array its beam width wider. Therefore, different targets may be illuminated simultaneously in co-located MIMO radar. An adaptive resource management tracking for proposed, where the number, set and waveform system can controlled. The optimal parameters chosen according a cost function that takes both desired precision consumed...

Eddy current pulsed thermography (ECPT) is widely used in the nondestructive testing (NDT) of metal surface defects. Because defect information sometimes affected by edge effect, it necessary to segment ECPT image sequence, that is, separate defected part from background, improve detection effect. Tensor robust principal component analysis has been many segmentation fields, such as medical imaging, face recognition, and so on, which also includes NDT, but faces problems high time cost,...

Abstract Aims Recent evidence indicated the biological basis of complement 1q (C1q)/tumor necrosis factor (TNF)‐related protein (CTRP) 3, 4, and 14 for affecting brain structure cognitive function. Thus, we aimed to investigate association between plasma CTRPs with Alzheimer's disease (AD). Methods A multicenter, cross‐sectional study recruited patients AD ( n = 137) cognitively normal (CN) controls 140). After data collection demographic characteristics, lifestyle risk factors, medical...

Insulated gate bipolar transistor (IGBT) chips are crucial core components in power electronic modules. It is of great significance to investigate the deformation characteristics IGBT induced by electro-thermal-mechanical coupling. In this article, a field reconstruction technique based on scanning laser displacement measurement developed accurately capture dynamic distribution surface chips. Based method, comprehensive investigation impacts switching conditions fluctuation implemented. The...

Current distribution measurement methods are widely used in medical examinations, predicting faults semiconductor devices and assessing structural integrity. Several for measuring current available, such as electrode arrays, coils, magnetic sensors. However, these unable to obtain images of with high spatial resolution. Therefore, there is a need develop non-contact method measure that capable capturing In this study, based on infrared thermography proposed. The uses thermal variations...

Nonferromagnetic metal materials are widely used in industry. Defects generated during manufacture and use may lead to serious accidents. The defect reconstruction is important for nondestructive evaluation. Eddy current pulsed thermography (ECPT) a well-known testing evaluation method, but hardly reconstruct fully profile. Electrical impedance tomography (EIT) shows promising potential profile reconstruction, suffers from electrode number limitation. In this article, EIT introduced ECPT...

A current-efficient and fast-transient n-type low-dropout regulator (LDO) for high-frequency load transient in mobile phone applications is presented this article. By using transconductance magnified MOS (TM-MOS), it reduces LDO's output impedance with fast response speed keeps high current efficiency. Moreover, based on load-current sensing of TM-MOS, active clamp strategy implemented to optimize the driving dead zone (DDZ) NMOS LDO achieve good performance. Robust loop stability a wide...

An effective presymptomatic diagnosis and treatment of Alzheimer's disease (AD) would have enormous public health benefits. Sparse coding (SC) has shown strong potential for longitudinal brain image analysis in preclinical AD research. However, the traditional SC computation is time-consuming does not explore feature correlations that are consistent over time. In addition, cohorts usually contain incomplete data clinical labels. To address these challenges, we propose a novel two-stage...

Outlier detection in vibration signals can play an important role addressing the issue of structural or environmental changes during testing. In this study, a transformer-based model for outlier is proposed. Unlike previous statistical and regression methods, proposed identify location high dimensional observation space using self-attention mechanism. The outliers within marked by combination spatial label temporal label. performance verified numerical study plane wave experimental vibrating...

Background SARS-CoV-2 nucleic acid testing (NAT) has been routinely used for COVID-19 diagnosis during this pandemic; however, there have concerns about its high false negative rate. We dissected detection efficiency with a large cohort study. Methods analyzed NAT positive rates of 4,275 specimens from 532 patients in Sichuan Province different disease severities, statuses, and stages, as well types numbers specimens. Results The total rate the was 37.5%. Among seven specimen types, BALF...

Measurement of electric current distribution is important for medicine, semiconductor, and structure integrity evaluation in nondestructive testing (NDT). Several measurement methods are developed, such as electrode array, coil magnetic sensor. In this paper, the infrared (IR)-imaging-based method proposed to capture 2D distribution. method, magnitude matrix obtained by utilizing relationship between thermal field field. Furthermore, an iteration algorithm reconstruct direction depending on...