Circuit Breaker Fault Diagnosis Method Based on Improved One-Dimensional Convolutional Neural Network

Aiming at the problems of manual feature extraction and poor generalization ability of model in traditional circuit breaker fault diagnosis technology, a circuit breaker fault diagnosis method based on improved one-dimensional convolutional neural network is proposed. Firstly, the input feature sequence is adaptively weighted by self-attention mechanism to highlight the weight of important information; Secondly, 1 1 convolution layer and global average pooling layer are used to replace the full connection layer, which reduces the model training parameters, improves the training efficiency and prevents the phenomenon of over-fitting. Aiming at the problem of small number of data samples, the data is enhanced by Generative Adversarial Network. After adding the generated data to the original data, the accuracy of fault identification is further improved. The experimental results show that this method can effectively and accurately identify different fault types of circuit breaker, and verify the feasibility of its engineering application

The Analysis and Calculation Method of Urban Rail Transit Carrying Capacity Based on Express-Slow Mode

Urban railway transport that connects suburbs and city areas is characterized by uneven temporal and spatial distribution in terms of passenger flow and underutilized carrying capacity. This paper aims to develop methodologies to measure the carrying capacity of the urban railway by introducing a concept of the express-slow mode. We first explore factors influencing the carrying capacity under the express-slow mode and the interactive relationships among these factors. Then we establish seven different scenarios to measure the carrying capacity by considering the ratio of the number of the express trains and the slow trains, the station where overtaking takes place, and the number of overtaking maneuvers. Taking Shanghai Metro Line 16 as an empirical study, the proposed methods to measure the carrying capacity under different express-slow mode are proved to be valid. This paper contributes to the literature by remodifying the traditional methods to measure the carrying capacity when different express-slow modes are applied to improve the carrying capacity of the suburban railway

LW-DETR: A Transformer Replacement to YOLO for Real-Time Detection

In this paper, we present a light-weight detection transformer, LW-DETR, which outperforms YOLOs for real-time object detection. The architecture is a simple stack of a ViT encoder, a projector, and a shallow DETR decoder. Our approach leverages recent advanced techniques, such as training-effective techniques, e.g., improved loss and pretraining, and interleaved window and global attentions for reducing the ViT encoder complexity. We improve the ViT encoder by aggregating multi-level feature maps, and the intermediate and final feature maps in the ViT encoder, forming richer feature maps, and introduce window-major feature map organization for improving the efficiency of interleaved attention computation. Experimental results demonstrate that the proposed approach is superior over existing real-time detectors, e.g., YOLO and its variants, on COCO and other benchmark datasets. Code and models are available at (https://github.com/Atten4Vis/LW-DETR)

Simultaneously enhancing adsorbed hydrogen and dinitrogen to enable efficient electrochemical NH3 synthesis on Sm(OH)3

The electrochemical N2 reduction reaction (ENRR), driven by renewable electricity and run under ambient conditions, offers a promising sustainable avenue for carbon-neutral NH3 production. Yet, to efficiently bind and activate the inert N2 remains challenge. Herein, effective and stable electrochemical NH3 synthesis on Sm(OH)3 via enhanced adsorption of hydrogen and dinitrogen by dual integration of sulfur dopants and oxygen vacancies (VO) is reported. The resulting S-doped lanthanide electrocatalyst attains both a good NH3 yield rate, exceeding 21 μgNH3 h−1 mgcat.−1, and an NH3 faradaic efficiency of over 29% at −0.3 V (vs reversible hydrogen electrode) in an H-type cell using a neutral electrolyte, figures of merit that are largely maintained after 2 days of consecutive polarization. Density functional theory calculations show that the adsorption energy barrier of N2 on S-Sm(OH)3(VO) is greatly lowered by the introduction of VO. In addition, the S sites improve the adsorption of hydrogen produced via the Volmer reaction, which is conducive to the formation of the *N–NH intermediate (i.e., the potential determining step, PDS) on adjacent Sm sites, and thereby significantly promotes the reaction kinetics of ENRR. The PDS free energy for the catalyst is comparable with the values at the peak of the ENRR volcano plots of leading transition metal catalyst surfaces

Taking on Proper Appearance and Putting It into Practice: Two Different Systems of Effort in Song and Ming Neo-Confucianism

Both “jianxing” 践形 (taking on proper appearance) and “jianxing” 践行 (putting into practice) were concepts coined by Confucians before the Qin Dynasty. They largely referred to similar things. But because the “Daxue” 大学 (“Great Learning”) was listed as one of the Sishu 四书 (The Four Books) during the Song Dynasty, different explanations and trends in terms of the “Great Learning” resulted in “taking on proper appearance” and “putting into practice” becoming two different systems of efforts. The former formed a vertical kind of representation and a complete system of practice by “developing the sincerity of intentions inside and taking on proper appearance and looks outside” in “shendu” 慎独 (self-discipline when alone) and “chengyi” 诚意 (developing the sincerity of intentions), and the latter developed into a horizontal system of practice through the interdependency of zhi 知 (knowing or knowledge) and xing 行 (doing or practice). The “interdependence between knowledge and practice” promoted by the Cheng brothers and Zhu Xi represented the vertical practice of moral understanding, while the “integration of knowing and doing” advocated by Wang Yangming represented using the way in “developing the sincerity of intentions” to adjust and transform the representation of the relationship between knowledge and practice. The ideas that were frequently stressed, such as “the same effort” and “naturally being so,” were all from “developing the sincerity of intentions” and “taking on proper appearance,” and they were all the representation of “really making intentions sincere.” In fact, the confusion over “the integration of knowing and doing” reflected the tension between two different systems and inconsistency in their thoughts.</jats:p

Abstract 3902: MSS HNPCC frequently contain CNVs in chromatin regulators

Abstract BACKGROUND &amp; AIMS: Approximately half of hereditary non-polyposis colorectal cancers (HNPCCs) don't display evidence of mismatch repair defects. The pathogenesis of microsatellite-stable (MSS) HNPCCs, and their effects on patients’ prognoses and responses to treatment, differ from those of other colorectal cancers (CRCs). We sought to identify genetic somatic alterations associated with MSS HNPCCs. METHODS: We examined genomic DNA samples from 95 primary HNPCCs and adjacent normal appearing mucosae from patients undergoing surgery. We performed the copy number variation (CNV) of the entire genome using the Cytoscan HD Array in 20 MSS and 4 MSI HNPCC tumors and their adjacent normal tissues. Extensive comparison with somatic alterations in MSI HNPCCs allowed segregation of MSS HNPCC-exclusive alterations. RESULTS: We found that copy number of genes that regulate chromatin was altered in MSS HNPCCs; the most frequent CNV were observed in CHD6, CHD7 and CHD8, which encode members of the chromodomain helicase/adenosine triphosphate dependent chromatin remodeling family. Somatic genetic alterations in these 3 genes were detected in 13/10/5 of 20 MSS HNPCCs. Genes altered in patients with CHARGE syndrome (congenital malformations involving the central nervous system, eye, ear, nose, and mediastinal organs) who had CHD7 mutations were also altered in CRCs with copy number amplification in CHD7. CONCLUSIONS: Genetic aberrations in chromatin remodeling could contribute to the development of MSS HNPCCs. Note: This abstract was not presented at the meeting. Citation Format: WeiXiang Chen, Xia sheng, Jun Ding. MSS HNPCC frequently contain CNVs in chromatin regulators. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 3902. doi:10.1158/1538-7445.AM2015-3902</jats:p

Multiobjective Particle Swarm Optimization for Microgrids Pareto Optimization Dispatch

Multiobjective optimization (MOO) dispatch for microgrids (MGs) can achieve many benefits, such as minimized operation cost, greenhouse gas emission reduction, and enhanced reliability of service. In this paper, a MG with the PV-battery-diesel system is introduced to establish its characteristic and economic models. Based on the models and three objectives, the constrained MOO problem is formulated. Then, an advanced multiobjective particle swarm optimization (MOPSO) algorithm is proposed to obtain Pareto optimization dispatch for MGs. The combination of archive maintenance and Pareto selection enables the MOPSO algorithm to maintain enough nondominated solutions and seek Pareto frontiers. The final trade-off solutions are decided based on the fuzzy set. The benchmark function tests and simulation results demonstrate that the proposed MOPSO algorithm has better searching ability than nondominated sorting genetic algorithm-II (NSGA-II), which is widely used in generation dispatch for MGs. The proposed method can efficiently offer more Pareto solutions and find a trade-off one to simultaneously achieve three benefits: minimized operation cost, reduced environmental cost, and maximized reliability of service.</jats:p

C(sp³)–H functionalization with isocyanides

This review highlights the state-of-the-art advances in C(sp3)–H functionalization involving isocyanides through the synergistic combination of isocyanide insertion and C(sp3)–H bond activation.</p