In recent years, convolutional neural networks (CNNs) have been introduced for pixel-wise hyperspectral image (HSI) classification tasks. However, some problems of the CNNs are still insufficiently addressed, such as receptive field problem, small sample and feature fusion problem. To tackle above problems, we proposed a two-branch network with polarized full attention mechanism HSI classification. network, implemented to efficiently extract spectral spatial features, respectively. The...

In recent years, pixel-wise hyperspectral image (HSI) classification has received growing attention in the field of remote sensing.Plenty spectral-spatial convolutional neural network (CNN) methods with diverse mechanisms have been proposed for HSI due to being able provide more flexibility over standard blocks.However, it remains a challenge effectively extract multi-scale features high-resolution real-world complex environment.In this paper, we propose pyramidal polarized self-attention...

We consider stochastic different equations on $\mathbb R^d$ with coefficients depending the path and distribution for whole history. Under a local integrability condition time-spatial singular drift, well-posedness Lipschitz continuity in initial values are proved, which is new even independent case. Moreover, under monotone condition, asymptotic log-Harnack inequality established, extends corresponding result of [5] derived

Renal cell carcinoma (RCC) is responsible for most cases of the kidney cancer. Previous research showed that low serum levels cholesterol level positively correlate with poorer RCC-specific survival outcomes. However, underlying mechanisms and functional significance role in development RCC remain obscure. 3-Hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR) plays a pivotal as it key rate-limiting enzyme biosynthetic pathway. In this study, we demonstrated inhibition HMGCR could...

Hyperspectral image (HSI) classification is one of the most crucial tasks in remote sensing processing. The attention mechanism preferable to a convolutional neural network (CNN), due its superior ability express information during HSI Recently, numerous methods combining CNNs and mechanisms have been applied classification. However, it remains challenge achieve high-accuracy by fully extracting effective features from HSIs under conditions limited labeled samples. In this paper, we design...

In hyperspectral remote sensing, the clustering technique is an important issue of concern. Affinity propagation a widely used algorithm. However, complex structure image (HSI) dataset presents challenge for application affinity propagation. this paper, improved version based on wavelet structural similarity index and local outlier factor proposed specifically HSI dataset. algorithm, to calculate spatial pixels. Meanwhile, calculation strategy simplified reduce computational complexity. The...

This paper discusses about ergodic matrices and related application scrambling encryption of digital images. First, we use to realize the position permutation algorithms. In particular several novel methods are proposed. Subsequently analyze isomorphism relationship between group. By defining symbol operation system matrices, construct a union form express all existed Finally images encrypted using them. Preliminary results satisfactory.

SUMMARY During visual servoing space activities, the attitude of free-floating robot may be disturbed due to dynamics coupling between satellite base and manipulator. And disturbance cause communication interruption control center on earth. However, it often happens that redundancy manipulator is not enough fully eliminate this disturbance. In paper, a method named off-line optimizing algorithm innovatively proposed minimize during process where degrees-of-freedom for zero-reaction control....

Purpose – The purpose of this paper is to develop a set ground experiment system verify the basic functions space effector and capturing reliability end-effector for free-floating target payload in three-dimensional space. development essential significant, because it costs too much launch robot or other spacecraft carry out operation tasks Owing negligible gravity space, which different from that environment, should have capability verifying Design/methodology/approach mainly adopts hybrid...

The vascular structure of the tumor microenvironment (TME) plays an essential role in process metastasis. In vitro microvascular structures that can be maintained for a long time will greatly promote metastasis research. this study, we constructed mimicking breast cancer invasion model based on microfluidic chip platform, and maintenance self-assembled networks significantly improved by culturing with fibroblasts (up to 13 days). Using model, quantified ability cells angiogenesis sprouts...

Designing thermal conductivity efficiently is one of the most important study fields for taking advantages woven composites. This paper presents an inverse method design composite materials. Based on multi-scale structure characteristics composites, a model inversing heat conduction coefficient fibers established, including macroscale model, mesoscale fiber yarn microscale and matrix model. In order to improve computational efficiency, particle swarm optimization (PSO) algorithm locally...

Belowground root systems under pasture intercropping exhibit complex interactions, and the interactions of different combinations are still poorly understood. Therefore, in this work, two perennial annual herbages were intercropped pairs evaluated at a ratio 1:1. The morphology topological structure differed significantly with combinations. (1) Compared other cropping patterns, mean diameter (RD) alfalfa (Medicago sativa L.) common vetch (Vicia increased notably. surface area (RSA), volume...

Nb, V, and Ti were added to free-cutting steel improve its mechanical properties by means of precipitation strengthening fine grain strengthening. The process parameters during the hot deformation Nb-V-Ti studied at strain rates 0.01–10 s−1 temperatures 850–1250 °C. isothermal compression test results showed that temperature rise low high rate has a great influence on softening steel. processing maps strains 0.3–0.6 established based dynamic material model (DMM). When was 0.6, optimum...

Automatic crack segmentation in infrastructure is an important and challenging topic the field of computer vision. Cracks on surface some such as nuclear reactor containment are usually thin, most methods lose a lot features due to use downsamplings. Inspired by small object methods, we propose network named UCAN based effective application dilated convolution. can extract more contextual thin cracks while preserving resolution convolutional layers with exponentially continuously changing...

This paper presents a motion planning scheme for free-flying space robot capturing the tumbling target. And tracking method of manipulator based vision servo is proposed. The target in nutational motion. pose target's docking ring can be measured by manipulator's hand-eye cameras. Cartesian Space on Euler Angle and Homogeneous matrix. It plans arbitrarily smoothly six-axis. Compared with classical position-based visual (PBVS) method, it's relatively simpler accomplish capture within...

Ground micro-gravity verification and test for the on-orbit docking operation of non-cooperative target satellites in 3-dimensional space based on two 6-DOF industrial robots is essential significant owing to high risk cost influence earth gravity. The development ground system mainly adopts hybrid simulation method, which includes real contact hardware experiment virtual software simulation. To realize emulation environment, gravity compensation algorithm necessary system. admittance...

Abstract With the rapid development of its unique advantages, nonwoven fabric has become leading material automotive textiles. Nonwoven an ideal for automobiles and replaced traditional textiles plastic products. This paper takes a car as research model. A DRL‐2B thermal conductivity tester was used to test based on plate method. Material systems structures new types heat insulation composite materials were determined according results theory transfer. Then, final type by calculating...