检索结果-内蒙古大学图书馆

International Conference on Internet of Things, Communication and Intelligent technology, IoTCIT 2022

作者： Jia, Qiang Zhang, Yiyi Guo, Peng Zhang, Kui Liu, Jiang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China Huazhong University of Science and Technology Wuhan430074 China Pentair Group Marssteden Netherlands Shenzhen Miaoyan Technology Co. Ltd. Shenzhen China

ISBN: (纸本)9789819904150

Energy-efficient data gathering in Wireless Sensor Networks (WSNs) has been widely studied, and compressive sensing (CS) is an effective solution. CS can guarantee the sink node to accurately obtain all sensor nodes’ raw data with low data gathering cost, which is unlike the data aggregation solutions that usually result in large information loss. The existing compressive sensing methods used in WSN, either all nodes participate in compressive sensing computation which means all nodes need to delivery cumulative projection results with a size several times of raw data, or assume that the communication capability of nodes is heterogeneous (some nodes have the communication capability of one hop to sink). This paper aims at general WSN consisting of sensor nodes with isomorphic communication capability, effectively designs a new hybrid routing algorithm for two categories of nodes (i.e., perform compressive sensing calculation or not). This algorithm reduces part of sensor nodes’ transmission cost when applying compressive sensing, while remaining the quality of reconstructed data. Extensive number of simulation experiments have been done, and the results verify the advantages of this method over the existing methods. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Compressed sensing

来源：评论

学校读者我要写书评

暂无评论

Improvement of octane number in FCC gasoline through the extraction with urea/thiourea complex based on property analysis

Industrial Chemistry & Materials

引用

Industrial Chemistry & Materials 2024年第4期2卷 613-621页

作者： Lin Gao Chunyu Geng Botao Teng Hongwei Xiang Xiaodong Wen Yong Yang Yongwang Li State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China National Energy R&D Center for Coal to Liquid Fuels Synfuels China Technology Co.Ltd.Beijing 101407P.R.China Tianjin Key Laboratory of Brine Chemical Engineering and Resource Ecoutilization College of Chemical Engineering and Materials ScienceTianjin University of Science and TechnologyTianjin 300457China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal UniversityJinhua321004China

In the research described in this paper,the uses of the urea/thiourea complexation approach were employed to enhance the octane number of FCC gasoline by extracting *** was observed that adding thiourea improved the removal of the n-alkanes from gasoline,and matching results were obtained from experiments using model *** dynamics simulation revealed that the stability of urea complexes increased as the carbon number of the n-alkanes was raised,whereas lighter n-alkane molecules exhibited a lower propensity for complex formation with *** finding is in agreement with the results of the DSC measurement at the decomposition ***,infrared spectrum analysis,XRD characterization,and reaction heat measurements indicated that although thiourea was introduced into the reaction system,it did not actively participate in the complexation *** summary,the introduction of thiourea resulted in an increased solubility of urea in an ethanol solution and enhanced the reaction heat,suggesting its beneficial role in promoting urea complex formation and facilitating n-alkane removal from FCC gasoline.

关键词： Urea Thiourea FCC gasoline Thermoanalysis Molecular dynamics

来源：评论

学校读者我要写书评

暂无评论

Performance analysis of Vibration Signals Detected by Coherent LiDAR 6

Performance Analysis of Vibration Signals Detected by Cohere...

引用

6th Conference on Frontiers in Optical Imaging and technology: Imaging Detection and Target Recognition

作者： Han, Dongzhe Li, Yutang Li, Min Jin, Kai National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of Sciences Sichuan Chengdu China Key Laboratory of Adaptive Optics Chinese Academy of Sciences Sichuan Chengdu China Institute of Optics and Electronics Chinese Academy of Sciences Sichuan Chengdu China University of Chinese Academy of Sciences Beijing China Zhejiang University Zhejiang Hangzhou China

ISBN: (数字)9781510679733

ISBN: (纸本)9781510679726

This research conducts a comprehensive study of a laser coherent detection system utilizing balanced detector. The investigation explores the effects of key factors on signal-to-noise ratio (SNR), such as the fiber optic coupler’s coupling ratio (CR), quantum efficiency matching ratio between the diodes of the balanced detector (QER), the local oscillator (LO) optical power. A self-built 1550nm vibration measurement laser system was built to detect the indoor acoustic vibration. Conduct time-frequency analysis of the vibration signal, and evaluate the results through the evaluation indicators, sliding window spectral estimation (SWSE) to calculate the SNR. The results show that when the LO optical power approximates 1.47mW, the SNR are in the optimal range. This research not only enhances the expansion of later target classification to fine recognition, but also provides reference value for various applications. © 2024 SPIE. All rights reserved.

关键词： Signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

DiffLight: a partial rewards conditioned diffusion model for traffic signal control with missing data 24

DiffLight: a partial rewards conditioned diffusion model for...

引用

Proceedings of the 38th International Conference on Neural Information Processing Systems

作者： Hanyang Chen Yang Jiang Shengnan Guo Xiaowei Mao Youfang Lin Huaiyu Wan School of Computer Science and Technology Beijing Jiaotong University China and Beijing Key Laboratory of Traffic Data Analysis and Mining Beijing China

ISBN: (纸本)9798331314385

The application of reinforcement learning in traffic signal control (TSC) has been extensively researched and yielded notable achievements. However, most existing works for TSC assume that traffic data from all surrounding intersections is fully and continuously available through sensors. In real-world applications, this assumption often fails due to sensor malfunctions or data loss, making TSC with missing data a critical challenge. To meet the needs of practical applications, we introduce DiffLight, a novel conditional diffusion model for TSC under data-missing scenarios in the offline setting. Specifically, we integrate two essential sub-tasks, i.e., traffic data imputation and decision-making, by leveraging a Partial Rewards Conditioned Diffusion (PRCD) model to prevent missing rewards from interfering with the learning process. Meanwhile, to effectively capture the spatial-temporal dependencies among intersections, we design a Spatial-Temporal transFormer (STFormer) architecture. In addition, we propose a Diffusion Communication Mechanism (DCM) to promote better communication and control performance under data-missing scenarios. Extensive experiments on five datasets with various data-missing scenarios demonstrate that DiffLight is an effective controller to address TSC with missing data. The code of DiffLight is released at https://***/lokol5579/DiffLight-release.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A homogenization-planning-tracking method to solve cooperative autonomous motion control for heterogeneous carrier dispatch systems

引用

Chinese Journal of Aeronautics 2022年第9期35卷 293-305页

作者： Jie LIU Xianzhou DONG Xinwei WANG Kaikai CUI Xiwang QIE Jun JIA War Research Institute Academy of Military SciencesBeijing 100850China Department of Engineering Mechanics State Key Laboratory of Structural Analysis for Industrial EquipmentDalian University of TechnologyDalian 116024China Naval Aeronautical University Yantai 264000China Baimtec Materials Co. LtdBeijing 100094China

Taxiing aircraft and towed aircraft with drawbar are two typical dispatch modes on the flight deck of aircraft carriers. In this paper, a novel hierarchical solution strategy, named as the Homogenization-Planning-Tracking(HPT) method, to solve cooperative autonomous motion control for heterogeneous carrier dispatch systems is developed. In the homogenization layer, any towed aircraft system involved in the sortie task is abstracted into a virtual taxiing aircraft. This layer transforms the heterogeneous systems into a homogeneous configuration. Then in the planning layer, a centralized optimal control problem is formulated for the homogeneous system. Compared with conducting the path planning directly with the original heterogeneous system, the homogenization layer contributes to reduce the dimension and nonlinearity of the formulated optimal control problem in the planning layer and consequently improves the robustness and efficiency of the solution process. Finally, in the tracking layer, a receding horizon controller is developed to track the reference trajectory obtained in the planning layer. To improve the tracking performance,multi-objective optimization techniques are implemented offline in advance to determine optimal weight parameters used in the tracking layer. Simulations demonstrate that smooth and collision-free cooperative trajectory can be generated efficiently in the planning phase. And robust trajectory tracking can be realized in the presence of external disturbances in the tracking *** developed HPT method provides a promising solution to the autonomous deck dispatch for unmanned carrier aircraft in the future.

关键词： Autonomous motion control Carrier dispatch system Heterogeneous system Cooperative trajectory planning Receding horizon control Weight optimization

来源：评论

学校读者我要写书评

暂无评论

Causes of a Typical Southern Flood and Northern Drought Event in 2015 over Eastern China

引用

Advances in Atmospheric sciences 2023年第11期40卷 2092-2107,I0014,I0015页

作者： Zhuoyuan LI Qing YANG Dian YUAN Er LU Zhuguo MA Key Laboratory of Meteorological Disaster Ministry of Education(KLME)Joint International Research Laboratory of Climate and Environment Change(ILCEC)Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Regional Climate-Environment Research for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China Xiongan Institute of Innovation Chinese Academy of SciencesXiongan New Area 071800China

The spatial distribution of summer precipitation anomalies over eastern China often shows a dipole pattern,with anti-phased precipitation anomalies between southern China and northern China,known as the“southern flooding and northern drought”(SF-ND)*** 2015,China experienced heavy rainfall in the south and the worst drought since 1979 in the north,which caused huge social and economic *** reanalysis data,the atmospheric circulation anomalies and possible mechanisms related to the summer precipitation anomalies in 2015 were *** results showed that both El Niño and certain atmospheric teleconnections,including the Pacific Japan/East Asia Pacific(PJ/EAP),Eurasia pattern(EU),British–Baikal Corridor pattern(BBC),and Silk Road mode(SR),contributed to the dipole pattern of precipitation *** combination of these factors caused a southwards shift of the western Pacific subtropical high(WPSH)and a weakening of the East Asian summer ***,it was difficult for the monsoon front and associated rain band to migrate northwards,which meant that less precipitation occurred in northern China while more precipitation occurred in southern *** resulted in the SF-ND ***,further analysis revealed that global sea surface temperature anomalies(SSTAs)or sea-ice anomalies were key to stimulating these atmospheric teleconnections.

关键词： drought flood El Niño atmospheric teleconnection sea surface temperature anomaly

来源：评论

学校读者我要写书评

暂无评论

Telomere-to-telomere carrot (Daucus carota) genome assembly reveals carotenoid characteristics

引用

Horticulture Research 2023年第7期10卷 112-124页

作者： Ya-Hui Wang Pei-Zhuo Liu Hui Liu Rong-Rong Zhang Yi Liang Zhi-Sheng Xu Xiao-Jie Li Qing Luo Guo-Fei Tan Guang-Long Wang Ai-Sheng Xiong State Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural UniversityNanjingJiangsu 210095China Institute of Horticulture Guizhou Academy of Agricultural SciencesGuiyangGuizhou 550025China School of Life Science and Food Engineering Huaiyin Institute of TechnologyHuaianJiangsu 223003China Beijing Vegetable Research Center Beijing Academy of Agriculture and Forestry SciencesKey Laboratory of Biology and Genetic Improvement of Horticultural Crops in North ChinaBeijing 100097China

Carrot(Daucus carota)is an Apiaceae plant with multi-colored fleshy roots that provides a model system for carotenoid *** this study,we assembled a 430.40 Mb high-quality gapless genome to the telomere-to-telomere(T2T)level of“Kurodagosun”*** total,36268 genes were identified and 34961 of them were functionally *** proportion of repeat sequences in the genome was 55.3%,mainly long terminal *** on the coverage of the repeats,14 telomeres and 9 centromeric regions on the chromosomes were predicted.A phylogenetic analysis showed that carrots evolved early in the family *** on the T2T genome,we reconstructed the carotenoid metabolic pathway and identified the structural genes that regulate carotenoid *** the 65 genes that were screened,9 were newly ***,some gene sequences overlapped with transposons,suggesting replication and functional differentiation of carotenoid-related genes during carrot *** that some gene copies were barely expressed during development,they might be functionally *** of 24 cytochrome P450 genes associated with carotenoid biosynthesis revealed the tandem or proximal duplication resulting in expansion of CYP gene *** results provided molecular information for carrot carotenoid accumulation and contributed to a new genetic resource.

关键词： carrot sequences characteristics

来源：评论

学校读者我要写书评

暂无评论

High Efficiency Cell-Bead Pairing Via Dielectrophoresis-Controlled Queuing Process for Single-Cell analysis 22

High Efficiency Cell-Bead Pairing Via Dielectrophoresis-Cont...

引用

22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023

作者： Cai, Yao Liu, Zhuzhu Yang, Shijia Su, Fei Yu, Duli Xing, Xiaoxing Luo, Yuan Beijing University Of Chemical Technology China China-Japan Friendship Hospital China Shanghai Institute Of Microsystem And Information Technology Chinese Academy Of Sciences State Key Laboratory Of Transducer Technology China University Of Chinese Academy Of Sciences Center Of Materials Science And Optoelectronics Engineering China

ISBN: (纸本)9784886864352

This work presents a novel microfluidic single-cell analysis platform, capable of active cell-bead pairing for downstream investigation. The presented device leverages dielectrophoresis (DEP) to control particle trajectories, and interfaced with special dumbbell-shaped microwell arrays to achieve high-efficiency single cell-bead pairing. At present, the capture rates for single particles are 99.21% and 92.26% respectively for beads and cells, and the pairing rate of precisely one-cell-one-bead reached 77.75±2.5%, successfully overcoming the double Poisson limit in the commercialized droplets/microwell platforms. © 2023 IEEJ.

关键词： dielectrophoresis particle pairing Single-cell analysis

来源：评论

学校读者我要写书评

暂无评论

Block-gram: Mining Knowledgeable Features for Smart Contract Vulnerability Detection 7th

Block-gram: Mining Knowledgeable Features for Smart Contrac...

引用

7th International Conference on Smart Computing and Communication, SmartCom 2022

作者： Li, Tao Wang, Haolong Fang, Yaozheng Jian, Zhaolong Wang, Zichun Xie, Xueshuo Tianjin Key Laboratory of Network and Data Security Technology Tianjin China College of Computer Science Nankai University Tianjin China Key Laboratory of Blockchain and Cyberspace Governance of Zhejiang Province Hangzhou China State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing China

ISBN: (纸本)9783031281235

Effective vulnerability detection of large-scale smart contracts is critical because smart contract attacks frequently bring about tremendous economic loss. However, code analysis requiring traversal paths and learning methods requiring many features training is too time-consuming to detect large-scale on-chain contracts. This paper focuses on improving detection efficiency by reducing the dimension of the features, combined with expert knowledge. We propose a feature extraction method Block-gram to form low-dimensional knowledgeable features from the bytecode. We first separate the metadata and convert the runtime code to opcode sequence, dividing the opcode sequence into segments according to some instructions (jump, etc.). Then, we mine extensible Block-gram features for learning-based model training, consisting of 4-dimensional block features and 8-dimensional attribute features. We evaluate these knowledge-based features using seven state-of-the-art learning algorithms to show that the average detection latency speeds up 25 to 650 times, compared with the features extracted by N-gram. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Smart contract

来源：评论

学校读者我要写书评

暂无评论

Ecological health assessment of Tibetan alpine grasslands in Gannan using remote sensed ecological indicators

引用

地球空间信息科学学报（英文版） 2025年第1期28卷中插14,246-264页

作者： Zeyu Du Xibin Ji Jane Liu Wenyue Zhao Zhibin He Jiachang Jiang Qiyue Yang Liwen Zhao Jinlong Gao Linze Inland River Basin Research Station Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsNorthwest Institute of Eco-Environment and ResourceChinese Academy of SciencesLanzhouChina University of Chinese Academy of Sciences BeijingChina Linze Inland River Basin Research Station Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsNorthwest Institute of Eco-Environment and ResourceChinese Academy of SciencesLanzhouChina Academy of Carbon Neutrality Fujian Normal UniversityFuzhouChina Department of Geography and Planning University of TorontoTorontoCanada Gansu Grassland Technical Extension Station LanzhouChina College of Pastoral Agriculture Science and Technology Lanzhou UniversityLanzhouChina

Ecosystem health assessments are crucial to protect the ecological environment and ensure the sustainable ecological functions of alpine *** present,few studies evaluating the ecosystem health of the Gannan alpine grassland,China,an ecologically fragile area,based on a remote sensing theoretical framework *** such,this study assessed the ecosystem health of the Gannan alpine grassland based on the Remote Sensing-based Ecological Index(RSEI)and provided a comparative analysis of the RSEI and Gross Primary Productivity(GPP),extending the study of their spatiotemporal patterns and influencing *** results suggested that RSEI and GPP showed strong comparability in an ecological sense,with the RSEI better reflecting changes in ecosystem health of the Gannan alpine grassland than the ***,the health of the Gannan alpine grassland ecosystem was good(RSEI of 0.61-0.76)and a slow,fluctuating upward trend was seen from 2000(RSEI=0.66)to 2020(RSEI=0.72).Notably,the RSEI was high in the south and low in the north of the *** the past 21 years,43.92%of the ecologically healthy grassland in the southwest of Gannan has been degrading,while the poor ecological health of 39.04%of the grasslands in the southeast and northeast *** model test results show that RSEI could reasonably evaluate the ecosystem health of Gannan alpine *** assessment results provide important scientific data and information on health monitoring and targeted ecological restoration efforts in the Gannan region.

关键词： Ecological health Remote Sensing-based Ecological Index(RSEI) gross primary production remote sensing alpine grassland

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：