检索结果-内蒙古大学图书馆

4th IEEE Global Conference for Advancement in technology, GCAT 2023

作者： Ye, Liuqing Zhang, Canhui Zhao, Dan Bu, Longmin Xu, Huiting Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha410004 China

ISBN: (纸本)9798350305258

Asset inventory is an important part of internal management in an organization, and it is of great significance for the smooth operation and normal development of the organization. The traditional manual inventory method has problems of low inventory efficiency and low accuracy. The asset inventory model based on intelligent algorithms can overcome the shortcomings of traditional methods and improve inventory efficiency and accuracy. This article introduces the implementation process of an asset inventory model based on deep learning algorithms. Firstly, the YOLOv4 algorithm is used for object detection to obtain the position and category information of the target object in the asset image. Then, the Faster R-CNN algorithm is used to locate the target, further improving accuracy. Finally, a neural network model trained on large-scale data is used to classify, recognize, and count assets. Using the actual data, this paper constructs the optimal portfolio model based on different risk measures and termination conditions: the maximization model of unit risk return, the VaR risk control model, and the risk return preference model. Genetic algorithm and Simulated annealing algorithm are used to optimize the model. Through experimental verification, the recognition rate of this model reaches over 90%, and the inventory efficiency and accuracy are greatly improved compared to traditional manual inventory methods. In summary, asset inventory models based on intelligent algorithms have unique advantages in inventory efficiency and accuracy, and have broad application prospects in the future. © 2023 IEEE.

关键词： genetic algorithm Mathematical finance optimal portfolio simulated annealing algorithm

来源：评论

学校读者我要写书评

暂无评论

Tuning surface reactivity towards high-performance hard carbon in Li/Na/K-ion batteries

引用

Journal of Energy Chemistry 2025年第4期103卷 27-36页

作者： Wang Zhou Dan Wang Ying Mo Rui Tang Peng Gao Miaomiao Han Shi Chen Keigo Wakabayashi Takeharu Yoshii Hirotomo Nishihara Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology of Clean EnergyHunan Province Key Laboratory for Advanced Carbon Materials and Applied TechnologyHunan UniversityChangsha 410082HunanChina The Key Laboratory of Micro-nano Energy Materials and Application Technologies University of Hunan Province&College of Physics and Electronic EngineeringHengyang Normal UniversityHengyang 421002HunanChina Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao 999078China Institute of Multidisciplinary Research for Advanced Materials Tohoku University2-1-1 KatahiraAoba-kuSendaiMiyagi 980-8577Japan Advanced Institute for Materials Research(WPI-AIMR) Tohoku University2-1-1 KatahiraAoba-kuSendaiMiyagi 980-8577Japan

Controlling surface chemistry is critically important for improving the initial Coulombic efficiency(ICE)and adsorption capacity of hard carbon anode used in Li/Na/K-ion ***,accurately identifying the types and concentrations of hydrogen/oxygen terminated functional groups(HTFG/OTFGs)and distinguishing their functionalities remain ***,we quantitatively investigated the surface chemistry on hard carbon via ultra-high temperature programed desorption measurements,and uncovered the role of HTFG/OTFGs in influencing ICE and adsorption capacity in Li/Na/K-ions *** C-H group is found to be dominant species on the surface of hard carbon,and presents a positive correlation with ICE values and adsorption *** low reactivity of C-H group with both electrolyte salt and solvent results in the formation of thinner and highly conducive solid electrolyte interphase(SEI)layer,which benefit for the enhanced ICE and improved Li/Na/K-ions diffusion across SEI ***,the pimping trapping effect of C-H groups allows the adsorbed Li/Na/K-ions to migrate into graphitic interlayer quickly,enhancing the slope *** fabricating a C-H group-rich surface chemistry on hard carbon,a high ICE value and satisfactory specific capacity have been *** findings enrich our understanding of the surface chemistry-induced interfacial reaction,which effectively guides the rational design of high-performance hard carbon.

关键词： Hard carbon Surface chemistry C–H bond Initial coulombic efficiency Adsorption capacity

来源：评论

学校读者我要写书评

暂无评论

Research on Docker Container Network Isolation and Security Management for Multi-Tenant Environments

Research on Docker Container Network Isolation and Security ...

引用

2023 International Conference on Communication Network and Machine Learning, CNML 2023

作者： Zeng, Weijie Fan, Rui Wang, Zhi Xiao, Yu Huang, Rui Liu, Mouhai Hunan Changsha410004 China Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Hunan Changsha410004 China

ISBN: (纸本)9798400716683

This paper establishes a portal middleware platform for multi-tenant environments that can support higher tenant density and reduce the cost of software management and maintenance. It analyzes the advantages of Docker containers compared with traditional virtual machines in running applications, and introduces the whole architecture of Docker containers. By virtue of the multi-level security container isolation mechanism to achieve effective isolation and management of resources, it can effectively protect the security and integrity of the shared data between containers, and establish a configuration file-based shared data volume security isolation scheme CMAC. realize the fine-grained access control and isolation of the shared data volume. Experimental results show that the defense posture assessment accuracy of the multilevel security container isolation method proposed in this paper reaches more than 92%, and the efficiency of network security defense posture assessment, is always above 87%. It shows that the proposed method can isolate the script virus in a timely and effective manner. © 2023 ACM.

关键词： Containers

来源：评论

学校读者我要写书评

暂无评论

用于钎焊C/C复合材料的稀土改性还原氧化石墨烯增强AgCuTi复合钎料

引用

Journal of Central South University 2024年第5期31卷 1398-1411页

作者：吴靓李月陈锦微张汭张乾坤肖逸锋 School of Mechanical Engineering and Mechanics Xiangtan UniversityXiangtan 411105China Key Laboratory of Welding Robot and Application Technology of Hunan Province Xiangtan 411105China Welding Automation Equipment Engineering Research Center of Hunan Province Xiangtan 411105China

为了解决钎焊接头中脆性化合物的形成问题,我们设计了一种创新性的稀土改性还原氧化石墨烯增强AgCuTi复合钎料,进而获得了以Ag-Cu共晶为主要组织且脆性化合物生成量合适的钎焊接头。对比分析了有无稀土Ce改性的复合钎料的成分和显微组织... 详细信息

为了解决钎焊接头中脆性化合物的形成问题,我们设计了一种创新性的稀土改性还原氧化石墨烯增强AgCuTi复合钎料,进而获得了以Ag-Cu共晶为主要组织且脆性化合物生成量合适的钎焊接头。对比分析了有无稀土Ce改性的复合钎料的成分和显微组织,结果表明,经Ce改性后的还原氧化石墨烯在钎料中更加均匀分散。比较了分别采用有无Ce改性的钎料钎焊C/C复合材料-C/C复合材料接头的界面微观结构,并研究了石墨烯含量对接头组织和性能的影响。结果表明,由于经Ce改性的钎料中的还原氧化石墨烯分散性更好,从而细化了焊缝组织,且物相分布更均匀,使得接头的剪切强度明显提高。当石墨烯含量为0.5 wt.%时,使用Ce改性的钎料所得钎焊接头的平均剪切强度最高,为31.82 MPa,提高了50%。

关键词：稀土改性还原氧化石墨烯复合钎料 C/C复合材料钎焊

来源：评论

学校读者我要写书评

暂无评论

Study on interface shear strength between polyurethane treated and original Pisha sandstone under dry-wet cycles

引用

Journal of Traffic and Transportation Engineering(English Edition) 2025年第1期12卷 108-122页

作者： Wenbo Ma Xuan Zhou Jiaping Li Yanli Chen Yuyang Li Caiqian Yang Minke Ma Jiale Long Shuaicheng Guo College of Civil Engineering and Mechanics Xiangtan UniversityXiangtan 411105China School of Civil Engineering Southeast UniversityNanjing 21189China Key Laboratory for Green&Advanced Civil Engineering Materials and Application Technology of Hunan Province College of Civil Engineering Hunan UniversityChangsha 410082China Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education College of Civil EngineeringHunan UniversityChangsha 410082China

Currently,utilization of hydrophilic polyurethane(W-OH)materials for slope protection in arid areas has proved to be a cost-effective *** treatment effect highly depends on the interfacial performance between the W-OH treated and the original *** study aims to investigate the corresponding shear strength and its long-term performance under dry-wet cycles under the arid *** results from the direct shear test indicate the interface shear strength increases with W-OH solution concentration and decreases with the increase of water content of the Pisha *** investigations under dry-wet cycles indicate the interface cohesion is obviously weakened by the dry-wet cycles,while the influence on the internal friction angle is not *** correlation between the degradation level and the dry-wet cycles can be well fitted with the inverted Scurve using two combined exponential ***,the ethylene-vinyl acetate(EVA)content is utilized to enhance the durability performance under dry-wet *** is found the EVA can obviously improve the bonding property and the resistance to dry-wet *** study's results can serve as a solid base for the application of W-OH materials to resolve the soil erosion in the arid region.

关键词： W-OH polyurethane Pisha sandstone slope Dry-wet cycles Direct sheartest Interface strength Ethylene-vinyl acetate

来源：评论

学校读者我要写书评

暂无评论

A novel cartridge for nucleic acid extraction,amplification and detection of infectious disease pathogens with the help of magnetic nanoparticles

引用

Chinese Chemical Letters 2023年第8期34卷 236-240页

作者： Yile Fang Yue Wang Liangxi Zhu Haoran Liu Xiangyi Su Yuan Liu Zhu Chen Hui Chen Nongyue He State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China Economical Forest Cultivation and Utilization of 2011 Collaborative Innovation Center in Hunan Province Hunan Key Laboratory of Green Chemistry and Application of Biological NanotechnologyHunan University of TechnologyZhuzhou 412007China

Nucleic acid detection(NAD)based on real-time polymerase chain reaction(real-time PCR)is gold standard for infectious disease *** nanoparticles(MNPs)are widely used for nucleic acid extraction(NAE)because of their excellent *** technology makes automated NAD ***,most of the NAD microfluidic chips are too complex to be applied to point-of-care(POC)*** this paper,a simple-structure cartridge was developed for POC detection of infectious *** self-contained cartridge can be divided into a magnetic-controlled NAE part,a valve-piston combined fluidic control part and a PCR chip,which is able to extract nucleic acid from up to 500μL of liquid samples by MNPs and finish the detection process from“sample in”to“answer out”*** tests of the cartridges show that it met the demands of automated *** of on-cartridge detection of hepatitis B virus(HBV)demonstrated that this system has good uniformity and no cross-contamination between different cartridges,and the limit of detection(LOD)of this system for HBV in serum is 50 IU/*** detections of severe acute respiratory syndrome coronaviruses 2(SARS-CoV-2)with a concentration of 500 copies/mL were carried out on the system and 100%positive detection rate was achieved.

关键词： Nucleic acid detection Cartridge Magnetic nanoparticles Fluidic control Point-of-care testing

来源：评论

学校读者我要写书评

暂无评论

Traceability technology of DC Electric Energy Metering for On-Site Inspection of Chargers

引用

Energy Engineering 2023年第3期120卷 715-727页

作者： Hua Li Dezhi Xiong Zhi Wang Hunan Institute of Metrology and Inspection Changsha410018China State Grid Hunan Electric Power Corporation Limited Changsha410001China Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha410001China

The on-site inspection of high-power DC chargers results in new DC high-current measurement and DC energy traceability system *** paper studies the traceability technology of electric energy value for automotive high-power DC chargers,including:(1)the traceability method of the built-in DC energy meter and shunt of the charger;(2)precision DC high current and small precision DC voltage output and measurement *** paper designs a 0.1 mA∼600 A DC high current measurement system and proposes a 0.005 level DC powermeasurement traceability *** uncertainty evaluation experiment of theDC powermeasurement calibration system and the high-power DC charger’s on-site calibration experiment results verify the method’s effectiveness and feasibility in this *** experimental results show that the combined standard uncertainty of the DC power metering verification system can be 0.0451%.

关键词： DC electric energy measurement charger traceability calibration

来源：评论

学校读者我要写书评

暂无评论

Organic stoichiometric cocrystals with a subtle balance of charge-transfer degree and molecular stacking towards high-efficiency NIR photothermal conversion

引用

Chinese Chemical Letters 2024年第10期35卷 180-186页

作者： Jieqiong Xu Wenbin Chen Shengkai Li Qian Chen Tao Wang Yadong Shi Shengyong Deng Mingde Li Peifa Wei Zhuo Chen Institutes of Physical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui Graphene Engineering LaboratoryAnhui UniversityHefei 230601China Molecular Science and Biomedicine Laboratory(MBL).State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha 410082China Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantou515063China

Charge-transfer(CT)stoichiometric cocrystals are promising choice of organic materials for unveiling the structure-property ***,due to the contradiction between large CT degree required for strong NIR absorption and flexible molecular stacking,construction of stoichiomorphism-based cocystals with near-infrared(NIR)photothermal property remains ***,the first example of stoichiomorphism-based photothermal cocrystals were accomplished through the adaptive assembly of 3,3,5,5-tetramethylbenzidine(TMB)donor and 1,2,4,5-tetracyanobenzene(TCNB)*** selective cocrystallization could be controlled by varying the donor-acceptor stoichiometries via a surfactantassisted method,resulting in two cocrystals with 1:1(T1C1)and 1:2(T2C1)*** absorbance intensity of T1C1 at 808 nm was nearly twice that of T2C1,while the photothermal conversion efficiency(PCE)of the former was 60.3%±0.6%,approximately 80%of that for the latter(75.5%±2.6%),which might be caused by the different intermolecular interactions in distinct molecular stacking ***,both excellent PCEs of stoichiometric cocrystals were attributed to the nonradiative transition process,including internal conversion and charge dissociation processes,as elucidated by femtosecond transient absorption spectroscopy ***,T1C1 was used as an NIR heater for preparing agarose-based photothermal hydrogel,showing great potential for light-controlled in-situ *** strategy of balancing the CT degree and molecular packing orientation not only uncovered the relationship between stoichiometric stacking and photothermal property,but also provided an opportunity to develop advanced organic optoelectronic materials.

关键词： Charge-transfer cocrystal Stoichiometric stacking Crystal growth Photothermal conversion In-situ gelation

来源：评论

学校读者我要写书评

暂无评论

Research on Waxiang Dialect Recognition Based on Wav2vec2.0 Pre-Training and Transfer Learning

Research on Waxiang Dialect Recognition Based on Wav2vec2.0 ...

引用

2024 International Conference on Computing, robotics and System Sciences, ICRSS 2024

作者： Deng, Mixuan Tang, Pengju Gao, Yanxia Li, Huixuan Zhen, Guodong Fu, Kaifeng Wu, Xiaotian Huaihua University Huaihua China Key Laboratory of Wuling-Mountain Health Big Data Intelligent Processing and Application in Hunan Province Universities China Key Laboratory of Intelligent Control Technology for Wuling-Mountain Ecological Agriculture in Hunan Province Huaihua China

ISBN: (纸本)9798331511296

As a unique local dialect, Waxiang dialect carries rich regional culture and historical information. However, with the acceleration of modernization and the increase of population mobility, the inheritance and protection of Waxiang dialect are facing severe challenges. By constructing the 'Xuewatong' APP- Waxiang dialect digital protection platform, based on cloud storage technology, digital resource display, multimedia integration and other technologies, and providing learning resources through big data analysis of user needs, it can effectively promote the digital recording and preservation of Waxiang dialect language resources, and significantly improve the dissemination and educational effect of Waxiang dialect culture, showing the great potential of digital technology in dialect protection. © 2024 IEEE.

关键词： Linguistics

来源：评论

学校读者我要写书评

暂无评论

Ultrathin organic polymer with p-πconjugated structure for simultaneous photocatalytic disulfide bond generation and CO_(2)reduction

引用

Journal of Energy Chemistry 2023年第1期76卷 639-647,I0016页

作者： Linquan Hou Zhunyun Tang Guojiang Mao Shiheng Yin Bei Long Tao Ouyang Guo-Jun Deng Atif Ali Ting Song Key Laboratory for Green Organic Synthesis and Application of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of EducationCollege of ChemistryXiangtan UniversityXiangtan 411105HunanChina Hunan Key Laboratory for Micro-Nano Energy Materials and Device School of Physics and OptoelectronicsXiangtan UniversityXiangtan 411105HunanChina School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007HenanChina Analytical and Testing Center South China University of TechnologyGuangzhou 510640GuangdongChina Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong KongPokfulam RoadHong Kong 999077China

Combining photocatalytic organic reactions with CO_(2)reduction is an efficient solar energy utilization mode,but it is still limited by the organic species that can be matched and the low ***,ultrathin organic polymer with p-πconjugated structure(TPP)was rationally designed and prepared,and showed a high yield of CO(15.2 mmol g^(-1))and conversion of SAS coupled products(100%),far exceeding the organic polymer with P=O *** enhanced photoredox activity of TPP is ascribed to the orbital interaction between the p-orbital on phosphorus and theπ-orbitals of aromatic,which can accelerate the photoinduced charge carrier separation and improve the CO_(2)adsorption *** can also be used for the dehydrocoupling of various benzyl mercaptans to the corresponding SAS bond *** work provides a new concept for the efficient synthesis of disulfide bonds combined with CO_(2)reduction in a photoreaction system.

关键词： Photocatalytic coupled reaction Disulfide bond CO_(2)reduction High activity Organic polymer

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：