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Science China(Information Sciences) 2024年第7期67卷 224-239页

作者： Zhijia ZHAO Jiale WU Zhijie LIU we HE C.L.Philip CHEN School of Mechanical and Electrical Engineering Guangzhou University School of Intelligence Science and Technology and Key Laboratory of Intelligent Bionic Unmanned Systems of Ministry of Education University of Science and Technology Beijing School of Computer Science and Engineering South China University of Technology Pazhou Lab

In this study, an adaptive neural network(NN) control is proposed for nonlinear two-degree-offreedom(2-DOF) helicopter systems considering the input constraints and global prescribed ***, radial basis function NN(RBFNN) is employed to estimate the unknown dynamics of the helicopter system. Second, a smooth nonaffine function is exploited to approximate and address nonlinear constraint functions. Subsequently, a new prescribed function is proposed, and an original constrained error is transformed into an equivalent unconstrained error using the error transformation and barrier function transformation methods. The analysis of the established Lyapunov function proves that the controlled system is globally uniformly bounded. Finally, the simulation and experimental results on a constructed Quanser's test platform verify the rationality and feasibility of the proposed control.

关键词： adaptive NN control 2-DOF helicopter global prescribed performance input constraints

Identification and virulence test of a new pathogen that causes verticillium striping on rapeseed in northwestern China

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Oil Crop Science 2024年第1期9卷 8-19页

作者： we Si Ruisheng Wang Mingde Wu Long Yang Guoqing Li Jing Zhang State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province Huazhong Agricultural UniversityWuhan 430070China Qinghai Academy of Agriculture and Forestry Sciences Qinghai UniversityXiningQinghai Province810016China

Five stems of rapeseed with abundant black microsclerotia were collected from Huangyuan County of Qinghai Province,China,and fungal isolates were obtained from the *** were identified based on morphology,molecular features and specific PCR *** results showed that the 10 fungal isolates belonged to Verticillium longisporum lineage A1/*** of the 10 isolates(HW7-1)was tested for virulence on three species of rapeseed,including *** Zhongshuang 9,*** Qingyou 9 and *** Tayou 2 by conidia inoculation of HW7-1 on roots of young *** seedlings were inoculated with *** conidia or water *** seedlings of these treatments were transplanted in culture mix and incubated in a growth chamber(20℃).Results suggested that the control seedlings of three cultivars appeared quite healthy,while the seedlings inoculated with HW7-1 turned yellowing leaves,seedling stunting or even death after 22 days *** was re-isolated from he yellow leaves,thus fulfilling Koch's ***,compared to the control treatments,inoculation with HW7-1 caused flowering delay and seed yield reduction on Tayou 2 with production of microsclerotia on the *** our knowledge,this is the first report of *** lineage A1/D3 on rapeseed in northwestern China.

关键词： Verticillium longisporum lineage A1/D3 Virulence Rapeseed China

Precursor engineering enables high-performance all-inorganic CsPbIBr_(2) perovskite solar cells with a record efficiency approaching 13%

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Journal of Energy Chemistry 2024年第3期90卷 16-22,I0003页

作者： Qingyan Chang Yidan An Huaiman Cao Yuzhen Pan Liangyu Zhao Yulong Chen Yi we Sai-Wing Tsang Hin-Lap Yip Licheng Sun Ze Yu State Key Laboratory of Fine Chemicals Dalian University of Technology(DUT)Dalian 116024LiaoningChina Department of Materials Science and Engineering City University of Hong KongKowloon 999077Hong KongChina School of Chemistry Dalian University of Technology(DUT)Dalian 116024LiaoningChina Key Laboratory of Materials Modification by Laser Ionand Electron Beams(Ministry of Education)Dalian University of Technology(DUT)Dalian 116024LiaoningChina School of Energy and Environment City University of Hong KongKowloon 999077Hong KongChina Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry School of ScienceWestlake UniversityHangzhou 310024ZhejiangChina Department of Chemistry School of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of Technology10044 StockholmSweden

All-inorganic CsPbIBr_(2) perovskite has attracted widespread attention in photovoltaic and other optoelectronic devices because of its superior thermal ***,the deposition of high-quality solutionprocessed CsPbIBr_(2) perovskite films with large thicknesses remains ***,we develop a triple-component precursor(TCP) by employing lead bromide,lead iodide,and cesium bromide,to replace the most commonly used double-component precursor(DCP) consisting of lead bromide and cesium ***,the TCP system significantly increases the solution concentration to 1.3 M,leading to a larger film thickness(~390 nm) and enhanced light *** resultant CsPbIBr_(2) films were evaluated in planar n-i-p structured solar cells,which exhibit a considerably higher optimal photocurrent density of 11.50 mA cm^(-2) in comparison to that of DCP-based devices(10.69 mA cm^(-2)).By adopting an organic surface passivator,the maximum device efficiency using TCP is further boosted to a record efficiency of 12.8% for CsPbIBr_(2) perovskite solar cells.

关键词： All-inorganic perovskite solar cells CsPbIBr_(2) Precursor engineering Solubility High performance

The chemical characteristics of different sodium iron ethylenediaminetetraacetate sources and their relative bioavailabilities for broilers fed with a conventional corn‑soybean meal diet

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Journal of Animal Science and Biotechnology 2024年第2期15卷 826-843页

作者： Shengchen Wang Bingxin Wu Ling Zhu weiyun Zhang Liyang Zhang we Wu Jiaqi Wu Yun Hu Tingting Li Xiaoyan Cui Xugang Luo College of Animal Science and Technology Yangzhou UniversityYangzhou 225000People’s Republic of China Mineral Nutrition Research Division State Key Laboratory of Animal NutritionInstitute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193China

Background Our previous studies demonstrated that divalent organic iron(Fe)proteinate sources with higher complexation or chelation strengths as expressed by the greater quotient of formation(Qf)values displayed higher Fe bioavailabilities for *** iron ethylenediaminetetraacetate(NaFeEDTA)is a trivalent organic Fe source with the strongest chelating ligand ***,the bioavailability of Fe when administered as NaFeEDTA in broilers and other agricultural animals remains ***,the chemical characteristics of 12 NaFeEDTA products were *** these,one feed grade NaFeEDTA(Qf=2.07×10^(8)),one food grade NaFeEDTA(Qf=3.31×10^(8)),and one Fe proteinate with an extremely strong chelation strength(Fe-Prot ES,Qf value=8,590)were *** bioavailabilities relative to Fe sulfate(FeSO_(4)·7H_(2)O)for broilers fed with a conventional corn-soybean meal diet were evaluated during d 1 to 21 by investigating the effects of the above Fe sources and added Fe levels on the growth performance,hematological indices,Fe contents,activities and gene expressions of Fe-containing enzymes in various tissues of *** NaFeEDTA sources varied greatly in their chemical *** Fe concentration(PI),transferrin saturation(TS),liver Fe content,succinate dehydrogenase(SDH)activities in liver,heart,and kidney,catalase(CAT)activity in liver,and SDH mRNA expressions in liver and kidney increased linearly(Pwere detected(Pwere 139%,155%,and 166%,***

关键词： Broilers Chelation strengths Fe-containing enzymes NaFeEDTA Relative bioavailabilities

Inhibition of Heterogeneous Nucleation in Water by Hydrogel Coating

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Research 2024年第2期2023卷 139-147页

作者： Siyang Li Panpan Zhu Yaoting Xue Lei Wangg Tuck-Whye Wong Xuxu Yang Haoei Zhou Tiefeng Li we Yang Department of Engineering Mechanics Zhejiang UniversityHangzhou 310027China Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province Zhejiang UniversityHangzhou 310027China Center for X-Mechanics Department of Engineering MechanicsZhejiang UniversityHangzhou 310027China School of Biomedical Engineering and Health Sciences and Advanced Membrane Technology Research Centre Universiti Teknologi MalaysiaSkudai 81310Malaysia

Heterogeneous nucleation plays a critical role in the phase transition of water,which can cause damage in various ***,we report that heterogeneous nucleation can be inhibited by utilizing hydrogel coatings to isolate solid surfaces and ***,which contain over 90%water when fully swelled,exhibit a high degree of similarity to *** to this similarity,there is a great energy barrier for heterogeneous nucleation along the water-hydrogel ***,hydrogel coatings,which possess polymer networks,exhibit higher fracture energy and more robust adhesion to solid surfaces compared to *** high fracture and adhesion energy acts as a deterrent for fracture nucleation within the hydrogel or along the hydrogel-solid *** a hydrogel layer approximately 100μm thick,the boiling temperature of water under atmospheric pressure can be raised from 100 to 108℃.Notably,hydrogel coatings also result in remarkable reductions in cavitation pressure on multiple solid *** have demonstrated the efficacy of hydrogel coatings in preventing damages resulting from acceleration-induced *** coatings have the potential to alter the energy landscape of heterogeneous nucleation on the water-solid interface,making them an exciting avenue for innovation in heat transfer and fluidic systems.

关键词： fracture cavitation similarity

Evaluation of Soil Quality under Cocoa Trees in the Marahoué Region (Central-western Côte d’Ivoire)

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Open Journal of Soil Science 2024年第9期14卷 537-553页

作者： Ferdinand Gohi Bi Zro Lacina Yeo Bessimory Toure Martinez Arnauth Guei Dogniméton Soro Sidiky Bakayoko Dpartement dAgropdologie Universit Jean Lorougnon Gud Daloa Cte dIvoire

This study, which assesses the quality of soils under cocoa trees in the Marahoué region of Côte d’Ivoire, is being carried out against a backdrop of declining crop yields due to a number of factors, including the loss of soil fertility. The aim was to identify homogeneous groups of soils in terms of fertility and propose sustainable management methods for each group. The study was carried out on twenty-four cocoa orchards belonging to the SCOOP KAPATCHIVA cooperative, spread over eight sectors. A morphological characterisation of the soils was carried out in the field, followed by physico-chemical laboratory analyses of soil samples taken in the field. Soil fertility was analyzed on the basis of these two groups of data. The results showed that soil depths were generally high, except in some high altitude areas, where soils were often enriched in ferromagnesian elements and compacted. The texture of the soils varied between loamy and sandy-loamy, influencing cocoa production. Indeed, the soils of the plots with high production were looser and without ferromagnesian concretions, while those of the plots with low production were more gravelly and compact. Biological activity in the upper soil layer (0 - 30 cm) was notable with an abundance of termites and earthworms. The organic matter and nitrogen content varies considerably between sectors, directly impacting soil fertility. The soils were slightly acidic and showed significant differences in the levels of exchangeable magnesium and potassium, and not at all for phosphorus which appeared at very low doses. Chemical analysis also revealed that nutrient balance was a key factor in orchard productivity, with varying ratios of calcium, magnesium and potassium. Knowledge of these results made it possible to make recommendations for soil management with a view to improving cocoa yields in the study area.

关键词： Soil Chemical Balances Fertility Cocoa Farming Marahoué Region

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建构文化人工智能的可能路径

学术前沿 2024年第14期 31-44页

作者：魏屹东山西大学哲学学院

生成式人工智能大模型的发展表明,新一代人工智能通达通用人工智能的目标正在接近。而通用人工智能要实现通用性、人性化和广泛应用,具有人类文化特征的属性是其必备的要件。将意识、情感、伦理等高级认知因素嵌入人工智能系统,也就是... 详细信息

生成式人工智能大模型的发展表明,新一代人工智能通达通用人工智能的目标正在接近。而通用人工智能要实现通用性、人性化和广泛应用,具有人类文化特征的属性是其必备的要件。将意识、情感、伦理等高级认知因素嵌入人工智能系统,也就是建构具有人性的文化人工智能,无疑是一种可能出路。如何让人工智能成为文化人工智能这种具身人工智能是一个重大挑战。从哲学方法论审视,建构文化人工智能的可能路径包括,智能体的范畴论与语境论的整合,感性与理性的整合,通过机制进行功能建模,通过结构功能实现适应性表征,以及通过语境觉知应对意外情况,最终通过严格的“图灵测试”。如果这些都做到了,就有望在人工智能系统中嵌入人类特有的文化特征,使其成为具有人性的文化人工智能。

关键词：大语言模型通用人工智能具身人工智能文化人工智能适应性表征

城市间环境协作治理网络密度、技术联盟对企业绿色创新影响的研究

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大连理工大学学报（社会科学版） 2024年第2期45卷 17-23页

作者：韦院英暨南大学博士后流动站广东广州523808

城市群作为我国绿色创新主体聚集区,是我国实现绿色经济高质量发展重要驱动力,企业作为重要的绿色创新主体,是城市群实现绿色发展的关键。以2009~2018年5个国家级和5个区域性城市群内676家重污染行业企业为样本,运用社会网络分析法,研... 详细信息

城市群作为我国绿色创新主体聚集区,是我国实现绿色经济高质量发展重要驱动力,企业作为重要的绿色创新主体,是城市群实现绿色发展的关键。以2009~2018年5个国家级和5个区域性城市群内676家重污染行业企业为样本,运用社会网络分析法,研究城市间环境协作治理网络密度对企业绿色创新的影响机制。研究发现:城市间环境协作治理密度对企业绿色创新起到显著的正向影响,技术联盟是城市间环境协作治理网络密度影响企业绿色创新的中介变量,且受到城市群经济水平调节影响。

关键词：城市群网络密度技术联盟企业绿色创新