Monocular depth estimation plays a crucial role in many downstream visual tasks. Although research on monocular depth estimation is relatively mature, it commonly involves strategies that entail increasing both the computational complexity and the number of parameters to achieve superior performance. Particularly in practical applications, enhancing the accuracy of depth prediction while ensuring computational efficiency remains a challenging issue. To tackle this challenge, we propose a novel and simple depth estimation model called SimMDE, which treats monocular depth estimation as an ordinal regression problem. Beginning with a baseline encoder, our model is equipped with a Deformable Cross-Attention Feature Fusion (DCF) decoder with sparse attention. This decoder efficiently integrates multi-scale feature maps, markedly reducing the quadratic complexity of the Transformer model. For the extraction of finer local features, we propose a Local Multi-dimensional Convolutional Attention (LMC) module. Meanwhile, we propose a Wavelet Attention Transformer (WAT) module to achieve pixel-level precise classification of images. Furthermore, we also conduct extensive experiments on two widely recognized depth estimation benchmark datasets: NYU and KITTI. The experimental findings unequivocally demonstrate that our model attains exceptional accuracy in depth estimation while upholding high computational efficiency. Remarkably, our framework SimMDE, extending from AdaBins, demonstrates enhancements, resulting in substantial improvements of 11.7% and 10.3% in the absolute relative error (AbsRel) on the NYU and KITTI datasets, respectively, with fewer parameters.

As a novel tyrosine kinase inhibitor (TKI), pyrotinib can irreversibly block dual pan-ErbB receptors and has been used in the treatment of advanced or metastatic human epidermal growth factor receptor 2 (HER2)-positive breast cancer. However, there are limited data on the use of pyrotinib in early breast cancer. Therefore, the present meta-analysis was conducted to evaluate the safety and efficacy of pyrotinib in the neoadjuvant setting for patients with early-stage or locally advanced HER2-positive breast cancer. Online databases (Pubmed, Web of Science, Embase and Cochrane Library) were comprehensively searched for eligible prospective clinical trials on August 17, 2023. The primary endpoint was the treatment-related adverse events (TRAEs), and the secondary endpoint was pathological complete response (pCR) rate. In total, seven trials with a total enrolment of 407 patients were included. A total of seven studies evaluated pyrotinib in combination with trastuzumab and chemotherapy in the neoadjuvant setting. The median age ranged from 47-50 years. The most common TRAEs were diarrhea [98% of patients; 95% confidence interval (CI): 92-100%], followed by anemia (71%; 95% CI: 55-89%), vomiting (69%; 95% CI: 55-82%), and leucopenia (66%; 95% CI: 35-91%). No treatment-related deaths occurred. The pooled pCR rate was 57% (95% CI: 47-68%). It was concluded that pyrotinib-containing neoadjuvant therapy could be an effective treatment strategy in patients with early-stage or locally advanced HER2-positive breast cancer; however, the management of adverse events should be a key consideration. The management of adverse events should be paid great attention to, during pyrotinib therapy, although pyrotinib-contained neoadjuvant therapy could be an effective treatment for patients with early-stage or locally advanced HER2-positive breast cancer. Head-to-head randomized clinical trials are warranted to further confirm the benefits and risks associated with pyrotinib therapy in patients with breast cancer.

Atmospheric corrosion significantly affects the reliability of metallized film capacitors (MFCs). Oxygen and moisture will induce oxidation reactions that lead to electrode corrosion, elevating the equivalent series resistance (ESR). In this work, an ESR elevation model is proposed to study the mechanism and regularity of the corrosion, and the influence of metal composition is analyzed with the accelerated aging test. It is found that the anti-corrosion ability results from the oxide structure on electrodes, with a transition from oxide plates to a compact oxide film as Al content ascends. The end contact degradation of MFCs has a notable impact on the ESR elevation, which can be inhibited by increasing the Al content to over 50 wt.%.

As the key components, metallized film capacitors (MFCs) are widely used in power system. Working at high temperature and humidity conditions, oxygen and moisture in atmosphere will permeate into MFCs and initiate electrode corrosion, which contributes to capacitance loss, and thus the reliability is reduced. In this work, a capacitance loss model for atmospheric corrosion is proposed to study the aging pattern of MFCs. Accordingly, an accelerated aging test with different temperature-humidity combinations is carried out to investigate the corrosion behavior at various temperature and humidity conditions. The results indicate the corrosion sites tend to distribute around the fibers on polymer films. The capacitance loss rate declines along time because of formation of oxide layers. It is also found temperature has a predominant effect on corrosion process in contrast of humidity.

Atmospheric corrosion is an important factor affecting the long-term reliability of metallized film capacitors (MFCs). Oxygen and moisture permeate into the MFC and initiate oxidation among layers, leading to the corrosion of electrodes, and thus contributing to the capacitance loss (CL). In this work, a CL- ${t}$ model is derived to study the capacitance characteristics of MFCs under atmospheric corrosion. Also, an accelerated aging test is carried out to provide data support for the model and investigate the effect of electrode composition on the anticorrosion ability. The results indicate that the CL is due to the surface roughness of polymer films, and for MFCs with certain aluminum content, the end corrosion is especially serious because of moisture permeation. The improvement in the resistance to atmospheric corrosion is found to be restricted as the aluminum level is high enough, which indicates that the aluminum content should be controlled within 10 wt%.

Owing to the advantage of high reliability, metallized film capacitors are widely used in DC-link applications withstanding DC/AC superimposed voltage. An experimental platform for studying the breakdown characteristics of metallized film under AC/DC superimposed voltage was established. The breakdown characteristics of metallized films under different AC/DC voltage ratios were studied. The results show that the distribution of breakdown field strength and breakdown phase angle of metallized film are significantly related to the AC/DC voltage ratio. The breakdown field strength of the metallized film decreases significantly with the increase of $k$ . The breakdown mainly occurs on the rising edge before the peak of AC voltage and keeps approaching the peak as $k$ increases.

Selective laser sintering (SLS) has broad application prospects in making complex insulation structures. The printing process may lead to an anisotropic structure. In addition, different printed parameters such as laser energy density can affect the electrical properties of the samples. The optimal printed parameters may be obtained by studying the electrical properties of the printed samples. In this paper, with respect to different laser energy density and printing angles, volume resistivity, relative permittivity and breakdown strength are studied. The results show that there are three breakdown paths for the sample due to the anisotropy of the layer-layer interface, which will affect the electrical properties. It is worth pointing out that the sample has the best electrical performance when the printing angle is 90°. In terms of printing parameters, when laser energy density is 0.03 J/mm2, the sample has the best electrical properties, with the volume resistivity is 22 GΩ • m, the relative permittivity is 3.6 (1 MHz), the ac breakdown strength is 43 kV/mm and the dc breakdown strength is 82 kV/mm. In this paper, the influence of laser energy density and printing angle on the electrical properties of samples is studied, which provides a basis for improving the quality of 3D printed insulation samples.

The ambient moisture would diffuse into the film capacitor under the humid environment. The corrosion of electrodes would occur under ac voltage stress with the participation of the moisture, which results in a decrease of the capacitance. Thus, the moisture ingress is harmful to long-term reliable operation of film capacitors. In this paper, the process of moisture ingress is analyzed based on the Fick’s second law. An accelerated aging is carried out for two types of film capacitors to obtain the capacitance change and the weight gain. A staged fitting analysis is used to describe the capacitance change curves of capacitor samples. The effect of the moisture ingress on the lifetime of film capacitors is studied. The results indicate that the encapsulating material which provides better moisture resistance can slow down the electrode corrosion and significantly improve the lifetime of the film capacitors.

With the continuous development of intelligent assembly industry, the research on robotic assembly systems has became a hot and cutting-edge issue concerned by powers. During the development of the system, robot vision is mainly used for tracking and positioning. In the establishment of robot vision system, image preprocessing technology is one of the key steps. This paper is aiming at the robot system assembled on the ground of the satellite, which involves machine vision part, the median filtering method and mean filtering method are analyzed through PSNR of peak noise ratio and fuzzy coefficient based on Matlab platform. The noise reduction ability of the five filtering algorithms, including gaussian filtering, guided filtering and bilateral filtering. Then, comparing the best algorithm with the operation time, bilateral filtering has the best effect on image noise reduction and the longest time.

Pulmonary vein isolation (PVI) is the cornerstone of atrial fibrillation (AF) ablation. However, this procedure remains complex and time-consuming, and the recurrence of AF after PVI is still unsatisfactory. Current technologies have improved our knowledge of the association between radiofrequency lesion creation and ablation parameters (power and duration), which triggered the development of high-power short-duration (HPSD). During the past decade, several preclinical and clinical studies have been conducted to confirm the feasibility, safety, and outcome of PVI ablation with HPSD or very high-power short-duration (vHPSD) settings, which increased electrophysiologists' interests in the utility of HPSD strategies. This paper describes the theoretical basis and recent research findings of HPSD or vHPSD ablation and summarizes the state-of-the-art evidence behind the role of this strategy in PVI.

Introduction: Sarcomatoid carcinoma describes a biphasic malignancy with features of epithelial and mesenchymal differentiation. It rarely occurs at the urinary bladder but is usually aggressive and associated with poor prognosis. Case Presentation: We here report a case of sarcomatoid carcinoma of the urinary bladder of a 48 years old man with intermittent painless haematuria over an 18-month period. Imaging examination showed intraluminal protrusion of a tumour on the right posterior wall of the bladder. Diagnosis: The patient was initially diagnosed as a right bladder mass. Interventions: The patient underwent two rounds of transurethral resection of bladder tumour (TURBT) and pathological analysis suggested the tumours were invasive urothelial carcinomas. Radical cystectomy was later performed, and pathological analysis suggested a stage T4 sarcomatoid carcinoma. The patient received 5 cycles of gemcitabine and cisplatin. Outcome: The patient died of multiple organ dysfunction syndrome 8.5 months after the diagnosis of sarcomatoid carcinoma. Conclusion: Sarcomatoid carcinoma of the urinary bladder is a highly malignant disease, and the histopathological characteristics are distinct. The diagnosis, surgical management, and chemotherapy of this patient are discussed together with previous cases reported in the literature

In order to reduce the quality defects caused by product packaging and improve the production efficiency as much as possible, a kind of defect detection method of transparent paper for small box cigarette package was researched and designed. The unqualified products were effectively detected and eliminated by using the line scanning cigarette machine. Through the methods of transformation, reorganization, optimization and creation, the system realizes the operation control of software and hardware of industrial automation, solves the problems of various packaging defects in the actual production link, and greatly improves the product quality.

Objective To evaluate the diagnostic value of quantitative rest and stress 13N-NH3 PET myocardial perfusion imaging (MPI) on coronary microvascular disease (CMVD),and provide basis for accurate classification.Methods From July 2016 to September 2017,a total of 23 patients (16 males,7 females;27-70 years) who were suspected of CMVD were prospectively enrolled in this study.Rest and ATPstress MPI were acquired using 13N-NH3 PET and analyzed using Heartsee software.Rest and stress relative uptake,absolute myocardial blood flow (MBF) and coronary flow reserve (CFR) were obtained and present on sectional images and cup maps.Based on the information,CMVD was diagnosed or excluded.Combined with myocardial enzymes,echocardiography,cardiac MRI,coronary angiography,CT angiography (CTA),CMVD was further divided into CMVD without (type 1) or with obstructive coronary disease (type 2),and other CMVD (type 3).Two-sample t test and one-way analysis of variance were used to analyze the data.Results In 23 patients,17 cases were diagnosed as CMVD (including 10 cases with type 1,3 cases with type 2 and 4 cases with type 3),and 6 cases were excluded.There were no significant differences in the age,gender and risk factors between CMVD group and exclusion group (all P＞0.05).The relative uptake results,including average uptake of whole left ventricle in rest and stress states,rest minimum quadrant,and area of stress uptake less than 60％ of maximum were significantly different between the two groups (t values:from -3.249 to 2.469,all P＜0.05).All the absolute blood flow parameters,including rest and stress whole MBF and CFR,rest and stress minimum quadrant MBF and CFR,were significantly different between CMVD group and exclusion group (t values:from-8.278 to-3.258,all P＜0.05).There was no statistically significant difference for relative uptake data among three types of CMVD (F values:from 0.002 to 1.440,all P＞0.05).For absolute quantitative values of whole MBF and minimum quadrant MBF in both rest and stress states,difference was statistically significant among groups (F values:from 3.885 to 8.452,all P＜0.05).Conclusion Quantitative PET MPI could provide a noninvasive,safe and accurate method for the diagnosis and classification of CMVD.

Well-crystallized olivine-structure LiFePO4/C composite was synthesized by a wet milling-assisted spray drying using cheap Fe3O4 as iron source. The composite exhibited bowl-like secondary particles that are mainly constructed of numerous carbon coated nanoparticles. Such a composite possesses a porous structure with an average pore size of 8.14 nm and a high BET surface area of 50.57 m(2) g(-1). Electrochemical tests revealed that the cathode material exhibited a high rate capability (84 mA h g(-1) at 90 C) and good cycle stability (93% capacity retention over 500 cycles at 10 C). That is because the uniform carbon coating increased the electronic conductivity, while, large specific surface area, porous structure, and nano-sized particles greatly favored the electrolyte accessibility and rapid Li+ transport.

Aim at the current situation of control measurement technology and GNSS technology, combined with the actual teaching situation of surveying and mapping specialty in university, on the basis of extensive investigation, ‘Control Surveying’ and ‘GNSS Principle’ integrated teaching method is proposed in the paper, from three aspects of teaching theory, teaching practice and course examination to reform, so as to promote the teaching and improve the professional quality of students, practice has proved that integrated teaching is feasible and effective.