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Chinese Chemical Letters 2022年第2期33卷 855-858页

作者： yanhui guo Yunyun Liu Jie-Ping Wan College of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang 330022China

The selective synthesis of N^(2)-sulfonyl and N^(2)-H 1,2,3-triazoles via organocatalytic annulation of enaminone/enaminoester with sulfonyl azide has been realized. The unconventional selectivity providing N^(2)-sulfoyl 1,2,3-triazoles takes place in pure water, wherein the hydrogen bond effect between water and the intermediate resulting from enamine-azide corporation accounts for the novel reaction selectivity. On the other hand, the reactions conducted in DMSO specifically afford N^(2)-H 1,2,3-triazoles in the absence of such hydrogen bond effect.

关键词： Enaminone Annulation N^(2)-sulfonyl 1,2,3-triazole Selectivity Green synthesis Sulfonyl azide

Using Object Detection Network for Malware Detection and Identification in Network Traffic Packets

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Computers, Materials & Continua 2020年第9期64卷 1785-1796页

作者： Chunlai Du Shenghui Liu Lei Si yanhui guo Tong Jin School of Information Science and Technology North China University of TechnologyBeijing100144China Department of Computer Science University of Illinois SpringfieldSpringfieldUSA

In recent years,the number of exposed vulnerabilities has grown rapidly and more and more attacks occurred to intrude on the target computers using these vulnerabilities such as different *** detection has attracted more attention and still faces severe *** malware detection based traditional machine learning relies on exports’experience to design efficient features to distinguish different malware,it causes bottleneck on feature engineer and is also time-consuming to find efficient *** to its promising ability in automatically proposing and selecting significant features,deep learning has gradually become a research *** this paper,aiming to detect the malicious payload and identify their categories with high accuracy,we proposed a packet-based malicious payload detection and identification algorithm based on object detection deep learning network.A dataset of malicious payload on code execution vulnerability has been constructed under the Metasploit framework and used to evaluate the performance of the proposed malware detection and identification *** experimental results demonstrated that the proposed object detection network can efficiently find and identify malicious payloads with high accuracy.

关键词： Intrusion detection malicious payload deep learning object detection network

FastAFLGo:Toward a Directed Greybox Fuzzing

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Computers, Materials & Continua 2021年第12期69卷 3845-3855页

作者： Chunlai Du Tong Jin yanhui guo Binghao Jia Bin Li School of Information Science and Technology North China University of TechnologyBeijing100144China Department of Computer Science University of Illinois SpringfieldSpringfield62703ILUSA Civil Aviation Management Institute of China Beijing100102China

While the size and complexity of software are rapidly increasing,not only is the number of vulnerabilities increasing,but their forms are *** has become an important factor in network attack and ***,automatic vulnerability discovery has become critical to ensure software *** is one of the most important methods of vulnerability *** is based on the initial input,i.e.,a seed,to generate mutated test cases as new inputs of a tested program in the next execution *** monitoring the path coverage,fuzzing can choose high-value test cases for inclusion in the new seed set and capture crashes used for triggering *** there have been remarkable achievements in terms of the number of discovered vulnerabilities,the reduction of time cost is still *** paper proposes a fast directed greybox fuzzing model,FastAFLGo.A fast convergence formula of temperature is designed,and the energy scheduling scheme can quickly determine the best seed to make the program execute toward the target basic *** results show that FastAFLGo can discover more vulnerabilities than the traditional fuzzing method in the same execution time.

关键词： Directed greybox fuzzing power schedule

Introduction to the Special Issue on Blockchain Security

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Computer Modeling in Engineering & Sciences 2023年第1期134卷 5-7页

作者： Zhihong Tian yanhui guo Shen Su Hui Lu Cyberspace Institute of Advanced Technology Guangzhou UniversityGuangzhou510006China Worcester Polytechnic Institute Worcester01609-2280USA

Motivated by the fast evolvement of blockchain technology,cloud-edge platforms,intelligent transportation systems,smart grid,vehicular networks,location based services,and other IoT applications have achieved significant breakthrough during recent ***,blockchain based researches and projects are super-hot topics and focuses for both research and industrial ***,most of the current blockchain projects still suffer from insufficient security *** defects of the underlying protocol make the node communication vulnerable to be hijacked,and further exacerbate the fork problem;smart contracts can hardly be fully tested before deployment because of the evolving blockchain platforms,while the smart contracts updating is impossible(or very complicated);current data privacy protection techniques are either inefficient or inaccurate;sharing and cross-chain schemes brought new security problems together with its TPS *** intrinsic security vulnerabilities make the current blockchain based systems and architectures prone to be assaulted,and further do harm to the confidence of the investment on the blockchain *** still,blockchain turns out to play a critical role in a lot of existing security solutions,which would be useless if the blockchain is insecure.

关键词： services smart breakthrough

Influence of Alternative Magnetic Field on the Diffusion of Al and Mg

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Journal of Materials Science & Technology 2004年第4期20卷 457-459页

作者： Xiaotao LIU, Jianzhong CUI, yanhui guo, Xiaoming WU and Jun ZHANGThe Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China Mat. Electromagnetic Proc. Lab. Northeastern Univ. Shenyang 110004 China

The influence of an alternative magnetic field on the diffusion of Al and Mg in AI-Mg diffusion couple is studied. The diffusion zone is composed of two intermediate phases, namelyβ and γ phase. Thickness of each intermediate phase is examined. The results show that the alternative magnetic field increases the thicknesses of βand γ phase zone and the layer growth ofβ and γphase obeys the parabolic rate law. The growth rate of the β and γ phase are increased with the application of the alternative magnetic field. This change is manifested through a change in the frequency factor k0 and not through a change in the activation energy Q. The frequency factor k0 for intermediate phase growth with an alternative magnetic field is 39.95 cm2/s for 7 phase and 2.84×10-4 cm2/s for β phase compared with those without the magnetic field is 22.4 cm2/s for 7 phase and 1.53×10-4 cm2/s for β phase.

关键词： Alternative magnetic field Al-Mg Couple Intermediate phase Thickness Diffusion

深埋炭质千枚岩巷道松动圈测试及主被动联合支护研究

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地下空间与工程学报 2021年第1期17卷 214-221页

作者：郭延辉侯克鹏昆明理工大学公共安全与应急管理学院昆明650093 昆明理工大学国土资源工程学院昆明650093

某铅锌矿550中段南部炭质千枚岩巷道围岩应力高,变形大,开挖后易塌方,极难支护,严重影响着矿山的安全生产和开采进度。室内试验结果表明,550中段炭质千枚岩属于中膨胀性软岩,具有较强的吸水性、易软化和崩解破坏。在现场巷道典型断面开... 详细信息

某铅锌矿550中段南部炭质千枚岩巷道围岩应力高,变形大,开挖后易塌方,极难支护,严重影响着矿山的安全生产和开采进度。室内试验结果表明,550中段炭质千枚岩属于中膨胀性软岩,具有较强的吸水性、易软化和崩解破坏。在现场巷道典型断面开展了松动圈声波测试,结果表明,巷道松动圈范围为2.0 m,属于大松动圈Ⅳ-Ⅴ类软岩。根据大松动圈组合拱支护理论,提出超前注浆+喷锚网+钢拱架的主被动联合支护技术,并确定了相关支护参数。运用大型岩土工程分析软件FLAC3D对比分析6种支护方案下巷道的稳定性,最终确定方案5为最优支护方案,即超前注浆+喷锚网+钢拱架支护(钢拱架间距1 m)能够较好地控制炭质千枚岩巷道的变形和稳定。研究成果为矿区炭质千枚岩巷道的支护提供了理论依据,同时也为类似软岩巷道的支护方法提供参考。

关键词：炭质千枚岩软岩巷道松动圈测试 FLAC3D 联合支护

Practise of humanistic management, explore service innovation-We take the office work of Nanjing forestry university south academy as an example

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International English Education Research 2016年第2期 30-32页

作者： WANG Siyu ZHOU Lin guo yanhui ZHOU Xiaojuan Nanjing forestry university south academy

Humanistic management means taking humanity as the center. To mobilize workers＇ positivity and creativity through establishing the dominant position of people in the management process and take human beings as the main line. humanistic management emphasizes to go on integrated management by taking people as the main resources in office. So the office work in our institution of higher education should even insist on the principle of people oriented. In this thesis, according to the working characteristics of the third category colleges and we also combined our practical working experience, we have carried on beneficial attempt towards humanistic management through Talents cultivation, staff management, image construction, system specification ect ways, we have also achieved good effects in improving the education environment, improving the office service qualitv ect asnects.

关键词： humanistic management The third category (independent) Colleges office service

Mechanisms of hyponatremia and diabetes insipidus after acute spinal cord injury:a critical review

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Chinese Neurosurgical Journal 2024年第1期10卷 42-47页

作者： Lianhua Li yanhui guo Chen Chen Zhonghe Wang Zhi Liu Department of Orthopedics the Fourth Medical Center of PLA General HospitalBeijingChina

The incidence of hyponatremia after spinal cord injury was reported to be between 25 and 80%.Hyponatremia can lead to a variety of clinical symptoms,from mild to severe and even *** is often associated with diabetes insipidus,which refers to insufficient arginine vasopressin(AVP)secretion or defective renal response to AVP,with clinical manifestations of syndromes such as hypoosmolality,polydipsia,and *** mechanistic studies on hyponatremia and diabetes insipidus after acute spinal cord injury have been performed in isolation,without integrating the above two symptoms into different pathological manifestations that occur in the same injury state and without considering the acute spinal cord injury patient’s condition as a *** therapeutic principles of CSWS and SIADH are in opposition to one *** is not easy to identify the mechanism of hyponatremia in clinical practice,which makes selecting the treatment *** to the existing theories,treatments for hyponatremia and diabetes insipidus together are contraindicated,whether the mechanism of hyponatremia is thought to be CSWS or *** this paper,we review the mechanism of these two pathological manifestations and suggest that our current understanding of the mechanisms of hyponatremia and diabetes insipidus after high acute cervical SCI is insufficient,and it is likely that there are other undetected pathogenetic mechanisms.

关键词： Mechanism Hyponatremia Diabetes insipidus Spinal cord injury

A Generation Method of Letter-Level Adversarial Samples

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Journal on Artificial Intelligence 2021年第2期3卷 45-53页

作者： Huixuan Xu Chunlai Du yanhui guo Zhijian Cui Haibo Bai School of Information Science and Technology North China University of TechnologyBeijing100144China Department of Computer Science University of Illinois SpringfieldSpringfieldUSA

In recent years,with the rapid development of natural language processing,the security issues related to it have attracted more and more *** perturbation is a common security *** can try to completely modify the input classification judgment of the target program without people’s attention by adding,deleting,or replacing several characters,which can reduce the effectiveness of the *** the current research has provided various methods of perturbation attacks on characters,the success rate of some methods is still not *** paper mainly studies the sample generation of optimal perturbation characters and proposes a characterlevel text adversarial sample generation *** goal is to use this method to achieve the best effect on character *** sentiment classification experiments,this model has a higher perturbation success rate on the IMDB dataset,which proves the effectiveness and rationality of this method for text perturbation and provides a reference for future research work.

关键词： Perturbation attack sentiment analysis adversarial examples

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城轨列车车载健康管理系统设计与应用研究

铁道机车车辆 2022年第6期42卷 131-138页

作者：郭燕辉北京交通大学交通运输学院北京100044

随着城市轨道交通运营规模的不断扩大,车辆关键系统检修及运维成本带来的压力日益突出。通过PHM技术实现车辆关键部件的智能化运维,已成为各个城轨运营单位正在积极探索的重要方向。文中主要提出了城轨车辆健康管理系统的总体解决方案,... 详细信息

随着城市轨道交通运营规模的不断扩大,车辆关键系统检修及运维成本带来的压力日益突出。通过PHM技术实现车辆关键部件的智能化运维,已成为各个城轨运营单位正在积极探索的重要方向。文中主要提出了城轨车辆健康管理系统的总体解决方案,完整地阐述了解决方案的总体架构,并以车门系统为例,着重介绍详细系统方案设计,并进行了软件模型仿真以及实车测试验证,实现车门关键部件的状态监测、性能判断、故障预测等健康管理功能。文中通过列车级以及子系统相结合的车载健康管理系统设计、仿真及实车验证,为城轨车辆健康管理提供行之有效的参考方案。

关键词：故障预测与健康管理(PHM) 智能运维门控系统软件仿真 Simulink