Detecting and recognizing objects are crucial steps in interpreting remote sensing images. At present, deep learning methods predominantly employed for detecting images, necessitating a significant number of floating-point computations. However, low computing power small storage devices hard to afford the large model parameter quantity high complexity. To address these constraints, this paper presents lightweight detection called CSPPartial-YOLO. This introduces PHDC Block module that...

Introduction Cardioplegia during cardiopulmonary bypass is essential for ensuring a surgical field free of blood and cardiac movement. Numerous cardioplegia solutions are available, but consensus guidelines about the safest or most effective do not exist. The present trial will compare Huaxi-1 solution, which has been used since 2006 with good results at major Chinese centre involved in this trial, widely Custodiol histidine-tryptophan-ketoglutarate (HTK) solution terms safety efficacy...

Ships are important targets for marine surveillance in both military and civilian domains. Since the rise of deep learning, ship detection synthetic aperture radar (SAR) images has achieved significant progress. However, variability size resolution, especially widespread presence numerous small-sized ships, continues to pose challenges effective SAR images. To address posed by small targets, we propose an enhanced YOLO network improve accuracy targets. Firstly, a Shuffle Re-parameterization...

Endothelial cell senescence is regarded as a vital characteristic of cardiovascular diseases. Elevated palmitate (PA) an independent risk factor diseases, but its role in endothelial currently unknown. During the course studying prosenescent PA, we discovered key dsRNA-dependent protein kinase [protein R (PKR)] senescence. Exposure human umbilical vein cells (HUVECs) to PA-induced characterized by increased levels senescence-associated β-galactose glucosidase activity, excessive production...

Urban area extraction using polarimetric synthetic aperture radar (PolSAR) data is an important application for urban planning and disaster assessment. Due to the variability in structures, problem of mistaking built-up areas vegetation remains challenging. Then, a new method proposed eigenvalues optimal roll-invariant features. First, similar entropy/anisotropy plane, 2-D RVI/PA plane adopted construct extractor surface scattering areas. ratio correlation coefficient as depict...

Gefitinib has been widely used in the first‐line treatment of advanced EGFR ‐mutated non‐small‐cell lung cancer ( NSCLC ). However, many patients will acquire resistance to gefitinib after 9‐14 months treatment. This study revealed that Krüppel‐like factor 4 KLF ) contributes formation c‐Met‐overexpressing cells. We observed was overexpressed cells and tissues. Knockdown increased tumorigenic properties gefitinib‐resistant cell lines without c‐Met overexpression, but it reduced sensitivity...

Synthetic aperture radar (SAR) tomography (TomoSAR) has been widely used in the three-dimensional (3D) reconstruction of urban areas using multi-baseline (MB) SAR data. For scenarios, MB data are often acquired by repeat-pass spaceborne system. Such a stack generally long time baselines, which result different atmospheric disturbances tracks. These factors can lead to presence phase errors (PEs). PEs multiplicative noise for observation data, cause diffusion and defocus TomoSAR imaging...

Calibration by distributed targets is an important part of polarimetric calibration (PolCAL) without corner reflectors (CRs). Currently, both the correlation HH and VV ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$R_{\rm{hhvv}}$</tex-math></inline-formula> ) equivalent number looks (ENL) constitute common method for extraction Bragg-like points (BLPs) in order to calibrate co-polarization channel...

Nonnegative eigenvalue decomposition (NNED), which insists and guarantees that each decomposed scattering component corresponds to a physically realizable scatterer, is powerful for polarimetric synthetic aperture radar (SAR) images analysis. Previous NNED mainly illustrated under the reflection symmetric condition. In this paper, coherency matrix approach derived implement nonreflection symmetry case. We explicitly show diversifications of results between with without assumptions,...

A simple and effective approach for unsupervised classification of large-scale landslides caused by the Wenchuan earthquake is developed. The data sets used were obtained a high-resolution fully polarimetric airborne synthetic aperture radar system working at X-band. In proposed approach, Pauli decomposition false-color RGB imagery first transformed to hue-saturation-intensity (HSI) color space. Then, good combination k-means clustering HSI in different channels stage-by-stage automatic...

In this article, a modified four-component decomposition method with refined volume scattering models is proposed for polarimetric synthetic aperture radar (SAR) image processing. the new method, after orientation angle compensation, placed in probability density functions. General forms of and branch conditions can be obtained. Similar to power extended model (S4R) by Sato et al., used various land covers based on criteria. Since angles are contained models, oriented buildings discriminated...

The overestimation of volume scattering is an essential shortcoming the model-based polarimetric synthetic aperture radar (PolSAR) target decomposition method. It likely to affect measurement accuracy and result in mixed ambiguity mechanism. In this article, extended adaptive four-component method with multiple thresholds proposed. First, orientation angle compensation applied coherency matrix, artificial areas are extracted as basis for selecting Second, areas, one two complex unitary...

For synthetic aperture radar (SAR), multipolarization and multifrequency modes greatly enrich the acquired earth resource information have been widely applied in remote-sensing fields. In this article, we compare classification capabilities of dual-frequency SAR. To meet objective selecting consistent complete polarimetric information, a unified framework is proposed. framework, covariance matrices are used directly as inputs instead indicators. Additionally, Wishart mixture model (WMM)...

Total anomalous pulmonary venous connection (TAPVC) is a rare, cyanotic and critical congenital heart disease where the entire left right veins fail to drain into atrium directly. Also, TAPVC-induced tissue hypoxia gradually worsens after birth. Thus, timely surgical repairs are recommended once diagnosed, particularly with drainage obstruction(s). Nonetheless, in sporadic cases, patients TAPVC survive adulthood no treatment. Herein, we report 46-year-old female TAPVC, four innominate vein...

In this letter, a hierarchical extended multicomponent decomposition method (ExMCSM) of polarimetric synthetic aperture radar interferometry (PolInSAR) is proposed. The target to overcome the overestimation volume scattering (OVS) and mitigate mixed ambiguity mechanism. proposed method, prior decomposition, orientation angle compensation (OAC), helix (HAC) are applied coherency matrix reduce complexity operation. interferometric similarity parameter (PISP) used refine models, optimal...

Polarimetric calibration intercalibrating the polarisation channels of radar system results in a better characterisation target and backscattering mechanisms. However, distortion because miscalibration may affect classification performance to some extent. The study described this article is an attempt at deriving polarimetric requirements on several algorithms for land features. In monostatic case, model representing effects residual calibrated data presented first, followed by analysing few...

An analytical bistatic point target reference spectrum (BPTRS) is proposed. The BPTRS derived from the one‐to‐one relationship between slow time and Doppler frequency with no Taylor series expansions. Based on BPTRS, a two‐dimensional frequency‐domain focusing algorithm for spaceborne/airborne synthetic aperture radar developed. exploits range‐dependent sub‐blocks processing method to perform range cell migration correction quadratic term compensation, then scaled inverse Fourier...

In this study, the authors propose an unsupervised terrain and land-use classification algorithm for polarimetric synthetic aperture radar (SAR) image analysis. Under non-reflection symmetry condition, non-negative eigenvalue decomposition (NNED) employing Arii volume scattering model is derived. They first apply NNED to divide pixels into three categories of surface, double bounce scatterings. Then in each category are further divided several classes based on characteristic parameter...

In this article, an extended seven-component decomposition method using refined volume scattering models and new configurations of mixed dipoles (M7SD) is proposed to interpret the mechanisms various terrain types. M7SD, are reasonably characterize land covers with different orientation angles, redefined dipoles, which have better explanations for mechanisms, introduced. Although diameter dipole used in experiment very small, superposition two same plane will cause one a distance from plane....

Extracorporeal membrane oxygenation (ECMO) is increasingly used in critically ill patients with respiratory and/or cardiac failure. This study aimed to investigate the epidemiology and risk factors of nosocomial infection (NI) pediatric who underwent ECMO for circulatory failure.Medical records that were administered support at Xiangya Second Hospital Central South University, The Sixth Medical Center PLA General Hospital, Children's Affiliation Zhengzhou from September 2012 December 2019...

The Wishart mixture model is an effective tool for characterizing the statistical distribution of polarimetric synthetic aperture radar (PolSAR) data. However, due to difficulty in determining equivalent number looks, has some problems terms practicality. In addition, flexibility needs be improved complicated scenes. To improve practicality and flexibility, a new named relaxed (RWMM) proposed. RWMM, looks no longer considered constant whole PolSAR image but variable that varies between...

Abstract Background Deep hypothermic circulatory arrest (DHCA) is commonly used in adult aortic surgery and pediatric complex congenital heart disease, associated with pathophysiological changes postoperative complications. Here, a temperature-controlled model rats was established to study the suitable temperature of by investigating damage body organs under different temperatures. Methods Thirty Sprague‒Dawley were randomly divided into 5 equal groups for DHCA experiments: I (15–20 °C), II...

Polarimetric calibration is aimed at intercalibrating the polarization channels of radar system. A better characterization target and backscattering mechanisms can be obtained by polarimetric calibration. The study described in this paper an attempt deriving requirements on for a commonly used classification method based scattering type alpha. model representing effects residual distortion data after present. This then applied to calculate alpha angle, through which identifying seven...