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Error exponent for concatenated codes in DNA data storage under substitution errors

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Science China(Information Sciences) 2022年第5期65卷 289-290页

作者： yuxuan shi Shuo SHAO Xiaohang ZHANG Yongjian WANG Yongpeng WU School of Cyber and Engineering Shanghai Jiao Tong University The National Computer Network Emergency Response Technical Team Coordination Center of China Department of Electronic Engineering Shanghai Jiao Tong University

Dear editor,The idea to store information on DNA has gained significant attention, due to the explosion of the demand for current data centers and storage techniques in recent years. DNA molecules are well known for t... 详细信息

关键词： DNA data storage substitution errors concatenated codes error exponent polar codes

Gait Recognition via Cross Walking Condition Constraint

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Computers, Materials & Continua 2021年第9期68卷 3045-3060页

作者： Runsheng Wang Hefei Ling Ping Li yuxuan shi Lei Wu Jialie Shen HuaZhong University of Science and Technology Wuhan430074China Queen’s University BelfastBT71NNUK

Gait recognition is a biometric technique that captures human walking pattern using gait silhouettes as input and can be used for long-term *** proposed video-based methods achieve high ***,gait covariates or walking conditions,i.e.,bag carrying and clothing,make the recognition of intra-class gait samples *** methods simply use triplet loss for metric learning,which does not take the gait covariates into *** alleviating the adverse influence of gait covariates,we propose cross walking condition constraint to explicitly consider the gait ***,this approach designs center-based and pair-wise loss functions to decrease discrepancy of intra-class gait samples under different walking conditions and enlarge the distance of inter-class gait samples under the same walking ***,we also propose a video-based strong baseline model of high performance by applying simple yet effective tricks,which have been validated in other individual recognition *** the proposed baseline model and loss functions,our method achieves the state-of-the-art performance.

关键词： Gait recognition metric learning cross walking condition constraint gait covariates

Formation of hierarchically 3D cactus-like architecture as efficient Mott-Schottky electrocatalyst for long-life Li-S batteries

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Nano Research 2023年第7期16卷 9318-9326页

作者： Biao Wang Yilun Ren Shaowei Chen Qingxi Zhai yuxuan shi Yujie Ma Shaochun Tang Xiangkang Meng National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210093China Haian Institute of High-Tech Research Nanjing UniversityNanjing 226600China

Searching for new promising electrocatalysts with favorable architectures allowing abundant active sites and remarkable structure stability is an urgent task for the practical application of lithium-sulfur(Li-S)***,inspired by the structure of natural cactus,a new efficient and robust electrocatalyst with three-dimensional(3D)hierarchical cactus-like architecture constructed by functional zero-dimensional(0D),one-dimensional(1D),and two-dimensional(2D)components is *** cactus-inspired catalyst(denoted as Co@NCNT/NCNS)consists of N-doped carbon nanosheets(NCNS)and standing Ndoped carbon nanotubes(NCNT)forest with embedded Co nanoparticles on the top of NCNT,which was achieved by an in situ catalytic growth *** unique structure design integrates the advantages of 0D Co accelerating catalytic redox reactions,1D NCNT providing a fast electron pathway,and 2D NCNS assuring strong structure ***,the rich Mott-Schottky heterointerfaces between metallic Co and semiconductive NCNT can further facilitate the electron transfer,thus improving the electrocatalyst ***,a Li-S battery with the Co@NCNT/NCNS modified separator achieves ultralong cycle life over 4000 cycles at 2 C with ultralow capacity decay of 0.016%per cycle,much superior over that of recently reported *** work provides a new strategy for developing ultra-stable catalysts towards long-life Li-S batteries.

关键词： lithium-sulfur batteries multifunctional separator shuttle effect enhanced catalytic activity Mott-Schottky electrocatalyst

Multi-Head Attention Graph Network for Few Shot Learning

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Computers, Materials & Continua 2021年第8期68卷 1505-1517页

作者： Baiyan Zhang Hefei Ling Ping Li Qian Wang yuxuan shi Lei Wu Runsheng Wang Jialie Shen School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan430074China School of Electronics Electrical Engineering and Computer ScienceQueens UniversityBelfastBT71NNUK

The majority of existing graph-network-based few-shot models focus on a node-similarity update *** lack of adequate information intensies the risk of *** this paper,we propose a novel Multihead Attention Graph Network to excavate discriminative relation and fulll effective information *** edge update,the node-level attention is used to evaluate the similarities between the two nodes and the distributionlevel attention extracts more in-deep global *** cooperation between those two parts provides a discriminative and comprehensive expression for edge *** node update,we embrace the label-level attention to soften the noise of irrelevant nodes and optimize the update *** proposed model is veried through extensive experiments on two few-shot benchmark MiniImageNet and CIFAR-FS *** results suggest that our method has a strong capability of noise immunity and quick *** classication accuracy outperforms most state-of-the-art approaches.

关键词： Few shot learning attention graph network

Internet of Things Intrusion Detection System Based on Convolutional Neural Network

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Computers, Materials & Continua 2023年第4期75卷 2119-2135页

作者： Jie Yin yuxuan shi Wen Deng Chang Yin Tiannan Wang Yuchen Song Tianyao Li Yicheng Li Department of Computer Information and Cyber Security Jiangsu Police InstituteNanjingChina Engineering Research Center of Electronic Data Forensics Analysis NanjingChina Key Laboratory of Digital Forensics Department of Public Security of Jiangsu ProvinceNanjingChina

In recent years, the Internet of Things (IoT) technology has developedby leaps and bounds. However, the large and heterogeneous networkstructure of IoT brings high management costs. In particular, the low costof IoT devices exposes them to more serious security concerns. First, aconvolutional neural network intrusion detection system for IoT devices isproposed. After cleaning and preprocessing the NSL-KDD dataset, this paperuses feature engineering methods to select appropriate features. Then, basedon the combination of DCNN and machine learning, this paper designs acloud-based loss function, which adopts a regularization method to preventoverfitting. The model consists of one input layer, two convolutional layers,two pooling layers and three fully connected layers and one output ***, a framework that can fully consider the user’s privacy protection isproposed. The framework can only exchange model parameters or intermediateresults without exchanging local individuals or sample data. This paperfurther builds a global model based on virtual fusion data, so as to achievea balance between data privacy protection and data sharing computing. Theperformance indicators such as accuracy, precision, recall, F1 score, and AUCof the model are verified by simulation. The results show that the model ishelpful in solving the problem that the IoT intrusion detection system cannotachieve high precision and low cost at the same time.

关键词： Internet of things intrusion detection system convolutional neural network federated learning

Effect of pyrite content on chalcopyrite flotation under different regrinding conditions

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 49-57页

作者： Zejun Wang Qing shi Guofan Zhang yuxuan Zhu Binbin Li School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources Central South UniversityChangsha 410083China

This study aimed to investigate the effect of varying pyrite(Py)content on copper(Cu)in the presence of different regrinding conditions,which were altered using different types of grinding media:iron,ceramic balls,and their mixture,followed by flotation in the cleaner *** flotation performance of rough Cu concentrate can be improved by changing the regrinding conditions based on the Py *** electron microscopy,X-ray spectrometry,ethylenediaminetetraacetic acid disodium salt extraction,and X-ray photoelectron spectroscopy studies illustrated that when the Py content was high,the use of iron media in regrinding promoted the generation of hydrophilic Fe OOH on the surface of Py and improved the Cu *** ceramic medium with a low Py content prevented excessive Fe OOH from covering the surface of chalcopyrite(Cpy).Electrochemical studies further showed that the galvanic corrosion current of Cpy-Py increased with the addition of Py and became stronger with the participation of iron media.

关键词： chalcopyrite regrinding media pyrite galvanic corrosion flotation

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代际创业心理资本对城乡创业类型的影响

浙江大学学报（理学版） 2024年第4期51卷 501-510,520页

作者：石钰璇王琛浙江大学地球科学学院浙江杭州310058 浙江大学地理与空间信息研究所浙江杭州310058

已有的创业研究主要关注外部创业资本对创业类型的影响,忽视了创业者内部基于代际传递的创业心理资本的作用及其城乡差异。基于中国综合社会调查(CGSS)2017年度数据,运用多元Logit模型探究了代际传递的创业心理资本对创业类型的影响,着... 详细信息

已有的创业研究主要关注外部创业资本对创业类型的影响,忽视了创业者内部基于代际传递的创业心理资本的作用及其城乡差异。基于中国综合社会调查(CGSS)2017年度数据,运用多元Logit模型探究了代际传递的创业心理资本对创业类型的影响,着重观察了城乡差异。研究发现:(1)代际创业心理资本对机会型创业具有显著促进作用,但创业榜样效应的性质特点与生存型创业对创业心理资本的需求存在互斥作用,因此代际创业心理资本对生存型创业存在抑制作用;(2)代际创业心理资本对城镇机会型创业的促进作用大于农村机会型创业,其与农村创业榜样效应微弱、农村家庭的教养方式相对落后有关;(3)代际创业心理资本对农村生存型创业的促进作用大于城镇生存型创业,其与城乡居民依赖不同类型的代际创业心理资本有关,城镇居民依赖代际创业榜样效应,而农村居民依赖创业自我效能感。从代际传递创业心理资本的角度讨论了城乡创业类型的影响因素,不仅是对当前创业理论研究的补充,也为今后促进城乡创业提供了参考。未来政府应当从持续树立创业示范效应方面促进城镇机会型创业,同时注重采取改善金融环境、健全创业保障体系等措施,致力于提高农村居民的群体自我效能感,实现农村地区创业类型的跃迁。

关键词：代际创业心理资本创业类型城乡差异创业榜样效应自我效能感

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大江健三郎的“新形式”小说实践——《优美的安娜贝尔·李》中的晚年样式

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东北大学学报（社会科学版） 2022年第5期24卷 144-150页

作者：时渝轩西安交通大学外国语学院陕西西安710049

《优美的安娜贝尔·李》是大江健三郎以“新形式”小说实践探索晚年样式的重要之作。小说的“新形式”由缩减的方法、向女性叙事的转向、元次元结构的连锁等元素构成。“新形式”建立在大江对以往自我文学诸多问题的重写与解构之上,呈... 详细信息

《优美的安娜贝尔·李》是大江健三郎以“新形式”小说实践探索晚年样式的重要之作。小说的“新形式”由缩减的方法、向女性叙事的转向、元次元结构的连锁等元素构成。“新形式”建立在大江对以往自我文学诸多问题的重写与解构之上,呈现出一个永处过程与运动之中、拒斥成熟与完成的“大江健三郎文学”。“新形式”所展现的晚年样式既是对过去大江文学的告别,又是对新大江文学到来的呼唤。

关键词：大江健三郎新形式晚年样式电影小说

日本震灾后文学中的“3·11”书写:川上弘美《神明2011》中的新“日常”

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外国文学 2020年第5期 151-160页

作者：时渝轩西安交通大学外国语学院陕西西安710049

2011年的东日本大地震(即"3·11"大地震)和福岛核泄漏事故催生了以书写核泄漏危机为主的震灾后文学,深刻影响了当代日本文学。作为其开端,川上弘美的作品《神明2011》在并置震灾前后两种"日常"的基础上,以对核泄漏的可视化呈现,实现了... 详细信息

2011年的东日本大地震(即"3·11"大地震)和福岛核泄漏事故催生了以书写核泄漏危机为主的震灾后文学,深刻影响了当代日本文学。作为其开端,川上弘美的作品《神明2011》在并置震灾前后两种"日常"的基础上,以对核泄漏的可视化呈现,实现了对震灾记忆的保存以及对近代以来"人类=神明"这一思维模式的批判。同时,小说关注在新"日常"下,被虚构的日本共同体所遮蔽的灾区留守群体于绝望中探寻自救的现实。《神明2011》不仅是日本文学界抵制官方"3·11"叙事、保存震灾记忆的起点,更是日本文学探寻近代文学功能回归、重返现实主义的尝试。

关键词：震灾后文学 “3·11” 川上弘美新“日常”