检索结果-内蒙古大学图书馆

IEEE Transactions on Intelligent Vehicles 2024年 1-11页

作者： Fan, Tianyuan Fu, Lijun Guo, Chuangxin Zhang, Yan Sun, Lin College of Electrical Engineering Zhejiang University Hangzhou China National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan China National Key Laboratory of Electromagnetic Energy Naval University of Engineering Wuhan China

Unmanned Aerial Vehicles (UAVs) have become a highly effective tool for inspecting Offshore Wind Farms (OWFs) due to their controllability, speed, and safety. A practical route planning program ensures timeliness of UAV OWFs inspection. The previous studies' models do not reflect real-world constraints of battery exchange operation-based UAV multistrip flights within UAV range and airport deployments. In this paper, an OWF inspection tasks allocation problem of UAVs (OWFI-TAP-of UAVs) is analyzed, which considers the UAV battery exchange process. Firstly, the UAV model to calculate the inspection time consumption is established, which considers the relation between UAV velocity and energy and the battery exchange process;then, a multi-UAV inspection task allocation model for minimizing the UAV inspection time by combining the Multiple Traveling Salesman Problem (MTSP) mathematical expressions and the battery exchange specificities is proposed. Secondly, an improved genetic algorithm (IGA) is proposed that includes a clustering initialization strategy and a task balance strategy to optimize the OWFI-TAP-of UAVs globally. Finally, taking Jiaxing OWF as the simulation case through numerical experiments validates the effectiveness of the proposed approach. IEEE

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Performance Evaluation and Transmitter Optimization for AN-Aided FH Communication Against Time Misalignment

引用

China Communications 2025年第3期22卷 86-103页

作者： Song Changqing Lin Lang Qin Lizhi Xiao Fei Zhao Hongzhi Shao Shihai National Key Laboratory of Wireless Communications University of Electronic Science and Technology of ChinaChengdu 611731China The Laboratory of Electromagnetic Space Cognition and Intelligent Control Beijing 100089China The Thirtieth Research Institude of China Electronic Science and Technology Group Corporation Chengdu 610093China

To guarantee secure communication against eavesdropping and malicious attack,an artificial noise(AN)-aided frequency-hopping(FH)architecture is adopted in this *** the inevitable time misalignment between the received signal and locally reconstructed AN will deteriorate the AN cancellation performance,yielding significant secrecy degradation at the FH *** view of this,first,the AN cancellation performance under time misalignment is evaluated via signal to AN-plus-noise ratio,and the system secrecy is analyzed via secrecy ***,to mitigate the performance degradation raised by time misalignment,the transmitting power allocation scheme for AN and confidential signal(CS)is optimized,and the optimal hopping period is ***,the obtained conclusions in both the performance evaluation and transmitter optimization sections hold no matter whether the eavesdropper can realize FH synchronization or *** verify that time misalignment will raise non-negligible performance ***,the power ratio of AN to CS should decrease as time misalignment increases,and for perfect time synchronization,the transmitting power of AN and CS should be *** addition,a longer hopping period is preferred for secrecy enhancement when time misalignment gets exacerbated.

关键词： artificial noise(AN)cancellation hopping period design power allocation time misalignment

来源：评论

学校读者我要写书评

暂无评论

Optical and molecular insights into dissolved organic matter release in soils induced by downward migration of biochar colloids

引用

Carbon Research 2024年第1期3卷 1-13页

作者： Zhao, Kang Shang, Jianying College of Land Science and Technology China Agricultural University Key Laboratory of Arable Land Conservation in North China Ministry of Agriculture and Rural Affairs Beijing100193 China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518055 China

The frequent wildfires and extensive biochar application accumulate biochar colloids in soils. The transport of biochar colloids may influence the release of soil dissolved organic matter (DOM) due to their high mobility and active surface, posing a detrimental impact on carbon cycle, pollutants behaviors, and water quality. Here, we examined the effect of pristine and aged biochar colloids on soil DOM release in three types of soils (black soil, fluvisol, and paddy soil) through adsorption and column experiments combined with fluorescence excitation/emission matrix spectroscopy (EEM) and fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). Adsorption experiment showed that biochar exhibited little effect on soil DOM release, while transport experiment indicated that the downward movement of both pristine and aged biochar colloids significantly enhanced the release of soil DOM, especially black soil and fluvisol. EEM spectra indicated that a humic acid-like substance with large molecular weights was the primary DOM that enhanced release from black soil (10.9–12.0% enhancement) and fluvisol (6–8% enhancement) during biochar colloid transport. Condensed aromatic-like (22.8% and 19.4%) and tannin-like (18.4% and 18.9%) compounds are the primary molecules correlated to the enhanced release of humic acid-like substances. Although chemical aging resulted in a more negative surface of aged biochar colloids and slightly enhanced biochar colloid transport (up to 7.0%), it showed no distinct effect on the release of soil DOM. This study indicates that biochar colloids may cause an increase in DOM release when irrigation and rainfall occur, and more attention should be paid to the environmental impacts of biochar colloids from intensive biochar application and wildfires. Graphical Abstract: (Figure presented.) © The Author(s) 2024.

关键词： Fourier transform infrared spectroscopy

来源：评论

学校读者我要写书评

暂无评论

Binding interaction of typical emerging contaminants on Gobiocypris rarus transthyretin:an in vitro and in silico study

引用

Frontiers of Environmental science & Engineering 2024年第11期18卷 53-64页

作者： Xiangqiao Li Huihui Liu Songshan Zhao Peter Watson Xianhai Yang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China Los Alamos National Laboratory New Mexico Los AlamosNM 87545USA

Emerging contaminants(ECs)have drawn global concern,and the endocrine disrupting chemicals is one of the highly interested ECs ***,numerous ECs lacks the basic information about whether they can disturb the endocrine related biomacromolecules or elicit endocrine related detrimental effects on *** this study,the potential binding affinity and underlying binding mechanism between 29 ECs from 7 chemical groups and Gobiocypris rarus transthyretin(CrmTTR)are investigated and probed using in vitro and in silico *** experimental results demonstrate that 14 selected ECs(11 disinfection byproducts,1 pharmaceuticals and personal care product,1 alkylphenol,1 perfluoroalkyl and polyfluoroalkyl substance)are potential CrmTTR *** CrmTTR binding affinity of three ECs(i.e.,2,6-diiodo-4-nitrophenol(logRP(T_(4))=0.678±0.198),2-bromo-6-chloro-4-nitrophenol(logRP(T_(4))=0.399±0.0908),tetrachloro-1,4-benzoquinone(logRP(T_(4))=0.272±0.0655))were higher than that of 3,3′,5,5′-tetraiodo-L-thyronine,highlighting that more work should be performed to reveal their potential endocrine related harmful effects on Gobiocypris *** docking results imply that hydrogen bond and hydrophobic interactions are the dominated non-covalent interactions between the active disruptors and *** optimum mechanism-based(for CrmTTR),and high throughput screening(for CrmTTR,little skate-TTR,seabream-TTR,and human-TTR)binary classification models are developed using three machine learning algorithms,and all the models have good classification *** facilitate the use of developed high throughput screening models,a tool named“TTR Profiler”is derived,which could be employed to determine whether a given substance is a potential CrmTTR,little skate-TTR,seabreamTTR,or human-TTR disruptor or not.

关键词： Endocrine disrupting effects Hormone transporter Endocrine disrupting chemicals Disinfection byproducts Classification model

来源：评论

学校读者我要写书评

暂无评论

control of 2-D Semi-Markov Jump Systems:A View from Mode Generation Mechanism

引用

IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 258-260页

作者： Yunzhe Men Jian Sun Jie Chen the National Key Laboratory of Autonomous Intelligent Unmanned Systems the School of AutomationBeijing Institute of TechnologyBeijing 100081 the Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China the Department of Control Science and Engineering Tongji UniversityShanghai 201804 the National Key Laboratory of Autonomous Intelligent Unmanned Systems Beijing Institute of TechnologyBeijing 100081China

Dear Editor,Two-dimensional(2-D) systems have wide applications in image data processing,gas absorption and fluid dynamics analysis [1]-[3].When there exist abrupt changes in 2-D systems,they are usually modeled by 2-D Markov jump systems(MJSs) or 2-D semi-Markov jump systems(SMJSs).This letter investigates the control of 2-D SMJSs based on a novel mode generation mechanism,which could avoid mode ambiguousness phenomenon caused by the evolution of system mode in two different *** criterion that guarantees the almost surely exponential stability of the system is obtained.A thermal process is studied to demonstrate the availability of the proposed method.

关键词： Markov mode system

来源：评论

学校读者我要写书评

暂无评论

Metallo-supramolecular complexes enantioselectively target monkeypox virus RNA G-quadruplex and bolster immune responses against MPXV

引用

national science Review 2025年第1期12卷 167-176页

作者： Jie Yang Geng Qin Baoying Huang Hualong Song Jiewei Sun Miles Postings Peter Scott Chuanqi Zhao Chunyu Wang Wenjie Tan Jinsong Ren Xiaogang Qu Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences School of Applied Chemistry and Engineering University of Science and Technology of China NHC Key Laboratory of Biosafety National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID) Department of Chemistry University of Warwick School of Pharmacy Xinxiang Medical University State Key Laboratory of Supramolecular Structure and Materials Jilin University

The Mpox virus(MPXV) has emerged as a formidable orthopoxvirus, posing an immense challenge to global public health. An understanding of the regulatory mechanisms of MPXV infection, replication and immune evasion will benefit the development of novel antiviral strategies. Despite the involvement of G-quadruplexes(G4s) in modulating the infection and replication processes of multiple viruses, their roles in the MPXV life cycle remain largely unknown. Here, we found a highly conservative and stable G4 in MPXV that acts as a positive regulatory element for viral immunodominant protein ***, by screening 42 optically pure chiral metal complexes, we identified the Λ enantiomer of a pair of chiral helical compounds that can selectively target m RNA G4 and enhance expression of the 39-k Da core protein encoded by the MPXV A5L gene. Mechanistically, RNA G4-specific helicase DHX36 inhibits A5L protein expression by unwinding G4s. In contrast, MH3 Λ enhanced m RNA stability by specifically targeting G4 structures and subsequently increased protein expression. Furthermore, given the pivotal role of the 39-k Da core protein in activating immune responses and facilitating virion maturation, modulation of MPXV G4 folding by MH3 Λ exhibited inhibitory effects on MPXV replication through enhancing the immune response. Our findings underscore the critical involvement of G4 in the MPXV life cycle and offer potential avenues for developing antiviral drugs that target G4.

关键词： G-quadruplex ligand binding Mpox virus chirality supramolecular chemistry

来源：评论

学校读者我要写书评

暂无评论

Real-world emission characteristics of carbonyl compounds from agricultural machines based on a portable emission measurement system

引用

Journal of Environmental sciences 2023年第2期124卷 846-859页

作者： Wenhan Yu Xianbao Shen BoboWu Lei Kong Kaijie Xuan Cheng Zhao Xinyue Cao Xuewei Hao Xin Li Hanyu Zhang Zhiliang Yao School of Ecology and Environment Beijing Technology and Business UniversityBeijing 100048China State Environmental Protection Key Laboratory of Food Chain Pollution Control Beijing Technology and Business UniversityBeijing 100048China Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry Beijing Technology and Business UniversityBeijing 100048China

Emissions of carbonyl compounds from agricultural machines cannot be *** compounds can cause the formation of ozone(O3)and secondary organic aerosols,which can cause photochemical smog to *** this study,20 agricultural machines were tested using portable emission measurement system(PEMS)under real-world tillage *** exhaust gases were sampled using 2,4-dinitrophenylhydrazine cartridges,and 15 carbonyl compounds were analyzed by high-performance liquid *** compound emission factors for agricultural machines were 51.14–3315.62 mg/(kg-fuel),and were 2.58±2.05,0.86±1.07 and 0.29±0.20 g/(kg-fuel)for China 0,China II and China III emission standards,*** compound emission factor for sowing seeds of China 0 agricultural machines was 3.32±1.73 g/(kg-fuel).Formaldehyde,acetaldehyde and acrolein were the dominant carbonyl compounds *** in emission standards and tillage processes impact ozone formation potential(OFP).The mean OFP was 20.15±16.15 g O3/(kg-fuel)for the China 0 emission *** OFP values decreased by 66.9% from China 0 to China II,and 67.4%from China II to China *** mean OFP for sowing seeds of China 0 agricultural machines was 25.92±13.84 g O3/(kg-fuel).Between 1.75 and 24.22 times more ozone was found to be formed during sowing seeds than during other processes for China 0 and China II agricultural *** carbonyl compound emissions from agricultural machines in China was 19.23 Gg in *** results improve our understanding of carbonyl compound emissions from agricultural machines in China.

关键词： Agricultural machines Carbonyl compounds Emission characteristics Tillage process PEMS

来源：评论

学校读者我要写书评

暂无评论

Cubature Kalman Fusion Filtering Under Amplify-and-Forward Relays With Randomly Varying Channel Parameters

引用

IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 356-368页

作者： Jiaxing Li Zidong Wang Jun Hu Hongli Dong Hongjian Liu the Department of Applied Mathematics Harbin University of Science and Technology IEEE the Department of Computer Science Brunel University London the School of Automation Harbin University of Science and Technology the Artificial Intelligence Energy Research Institute Northeast Petroleum University the Heilongjiang Provincial Key Laboratory of Networking and Intelligent Control Northeast Petroleum University the National Key Laboratory of Continental Shale Oil of China Northeast Petroleum University the Key Laboratory of Advanced Perception and Intelligent Control of High-End Equipment Ministry of Education Anhui Polytechnic University the School of Mathematics and Physics Anhui Polytechnic University

In this paper, the problem of cubature Kalman fusion filtering(CKFF) is addressed for multi-sensor systems under amplify-and-forward(AaF) relays. For the purpose of facilitating data transmission, AaF relays are utilized to regulate signal communication between sensors and filters. Here, the randomly varying channel parameters are represented by a set of stochastic variables whose occurring probabilities are permitted to exhibit bounded uncertainty. Employing the spherical-radial cubature principle, a local filter under AaF relays is initially constructed. This construction ensures and minimizes an upper bound of the filtering error covariance by designing an appropriate filter gain. Subsequently, the local filters are fused through the application of the covariance intersection fusion rule. Furthermore, the uniform boundedness of the filtering error covariance's upper bound is investigated through establishing certain sufficient conditions. The effectiveness of the proposed CKFF scheme is ultimately validated via a simulation experiment concentrating on a three-phase induction machine.

关键词： Amplify-and-forward (AaF) relays covariance intersection fusion cubature Kalman filtering multi-sensor systems uniform boundedness

来源：评论

学校读者我要写书评

暂无评论

Thermal management by manipulating electromagnetic parameters

引用

Chinese Physics B 2024年第5期33卷 21-27页

作者：王云梁迪飞韩天成邓龙江 National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu 611731China Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 611731China

Electromagnetic absorbing materials may convert electromagnetic energy into heat energy and dissipate ***,in a high-power electromagnetic radiation environment,the temperature of the absorbing material rises significantly and even *** becomes critical to ensure electromagnetic absorption performance while minimizing temperature ***,we systematically study the coupling mechanism between the electromagnetic field and the temperature field when the absorbing material is irradiated by electromagnetic *** find out the influence of the constitutive parameters of the absorbing materials(including uniform and non-uniform)on the temperature ***,through a smart design,we achieve better absorption and lower temperature *** accuracy of the model is affirmed as simulation results aligned with theoretical *** work provides a new avenue to control the temperature distribution of absorbing materials.

关键词： multi-physics field electromagnetic-thermal coupling microwave absorption high power application

来源：评论

学校读者我要写书评

暂无评论

Effect of Water Soaking on the Microstructure and Spontaneous Combustion Characteristics of Bituminous Coal During Low−Temperature Oxidation

引用

Combustion science and technology 2024年第11期196卷 1743-1767页

作者： Yi, Xin Zhang, Shaohang Bai, Zujin Deng, Jun Shu, Chimin Qu, Gaoyang Ge, Long School of Safety Science and Engineering Xi’an University of Science and Technology Shaanxi Xi’an China Shaanxi Key Laboratory of Prevention and Control of Coal Fire Xi’an University of Science and Technology Shaanxi Xi’an China Center for Process Safety and Disaster Prevention National Yunlin University of Science and Technology Yunlin Taiwan

The effects of water soaking on the microstructure and spontaneous combustion characteristics of coal samples were investigated by scanning electronic microscopy (SEM), Fourier transform infrared (FTIR) spectrometer, and temperature programmed testing system (TPTS). The SEM results showed that the pore structures on the surface of water−soaked coal were more developed than raw coal, the pores increased and enlarged, and the phenomenon of water absorption swelling occurred. At the same time, water soaking had a certain influence on the functional groups in coal. The results of FTIR clearly illustrated that the surface functional groups of water−soaked coal were more active, and the contents of functional groups such as hydroxyl, methylene, aliphatic ether and aromatic ether all increased to varying degrees. During the low−temperature oxidation process, the analysis results of TPTS indicated that the oxygen consumption rate and the production of CO, C2H4, and other gases of water−soaked coal were higher. Based on the analysis method of CO, CO/CO2 and C2H4 gas growth rate, the three peaks of the curve obtained correspond to the characteristic temperatures of each oxidation stage of the coal samples. The critical temperature, dry cracking temperature and fission temperature of water−soaked coal were 60 ± 10 ℃, 90 ± 10 ℃ and 120 ± 10 ℃, respectively, which was 10 ℃ lower than raw coal. The apparent activation energy (Ea) of coal was calculated by the CO model and fitted in sections. It can be seen that the Ea of water−soaked coal at different stages of low−temperature oxidation was lower, and the maximum difference was 2.1 kJ/mol. Therefore, from the above results, it inferred that the activity of bituminous coal became stronger after soaking in water, which may be due to the effect of soaking on the surface structure and active groups of coal, thus showing a higher risk of spontaneous combustion. © 2022 Taylor & Francis Group, LLC.

关键词： Temperature

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：