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A Graded Speed Control Method for Cyborg Rats Based on Electrical Stimulation of the Cuneiform Nucleus

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Journal of Bionic Engineering 2024年第3期21卷 1334-1346页

作者： Hanyi Ling le Han Nenggan Zheng Qiushi Academy for Advanced Studies(QAAS) Zhejiang UniversityHangzhou310007China The State Key Lab of Brain-Machine Intelligence Zhejiang UniversityHangzhou310007China College of Biomedical Engineering&Instrument Science Zhejiang UniversityHangzhou310007China College of Computer Science and Technology Zhejiang UniversityHangzhou310007China CCAI by MOE and Zhejiang Provincial Government(ZJU) Hangzhou310007China

The precise movement speed regulation is a key factor to improve the control effect and efficiency of the cyborg ***,the current stimulation techniques cannot realize the graded control of the *** this study,we achieved the multi-level speed regulation of cyborg rats in the large open field and treadmill by specifically targeting the Cuneiform Nucleus(CnF)of the Mesencephalic Locomotor Region(MLR).Detailed,we measured the influence of each stimulation parameter on the speed control process which included the real-time speed,accelerated speed,response time,and acceleration *** concluded that the pulse period and the pulse width were the main determinants influencing the accelerated speed of cyborg *** the amplitude of stimulation was found to affect the response time exhibited by the cyborg *** study provides valuable insights into the regulation of rat locomotion speed and highlights the potential for utilizing this approach in various experimental settings.

关键词： Cyborg rats Cuneiform nucleus Graded control Speed regulation

A multivariate grey incidence model for different scale data based on spatial pyramid pooling

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Journal of Systems Engineering and Electronics 2020年第4期31卷 770-779页

作者： ZHANG Ke CUI le YIN Yao Business School Hohai UniversityNanjing 211100China

In order to solve the problem that existing multivariate grey incidence models cannot be applied to time series on different scales, a new model is proposed based on spatial pyramid ***, local features of multivariate time series on different scales are pooled and aggregated by spatial pyramid pooling to construct n levels feature pooling matrices on the same scale. Secondly,Deng's multivariate grey incidence model is introduced to measure the degree of incidence between feature pooling matrices at each level. Thirdly, grey incidence degrees at each level are integrated into a global incidence degree. Finally, the performance of the proposed model is verified on two data sets compared with a variety of algorithms. The results illustrate that the proposed model is more effective and efficient than other similarity measure algorithms.

关键词： grey system spatial pyramid pooling grey incidence multivariate time series

Anthelmintic activity of Saba senegalensis(***.) Pichon (Apocynaceae) extract against adult worms and eggs of Haemonchus contortus

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Asian Pacific Journal of Tropical Biomedicine 2016年第11期6卷 945-949页

作者： Mohamed Bonewendé Belemlilga aristide Traoré Sylvin Ouédraogo Adama Kaboré Hamidou Hamadou Tamboura Innocent Pierre Guissou Laboratoire de Développement du Médicament Centre de recherche sur le médicament Ecole Doctorale de la SantéUniversité de Ouagadougou Ecole Doctorale de Santé Département Médecine Pharmacopée Traditionnelles–Pharmacie (MEPHATRA-Ph) Institut de Recherche en Sciences de la Santé (IRSS/CNRST) Département Productions Animales Institut de l’Environnement et de Recherches Agricoles(INERA/CNRST)

Objective: To evaluate the anthelmintic property of Saba senegalensis(***) Pichon(Apocynaceae)(S. senegalensis) on Haemonchus contortus that is traditionally used in Burkina Faso for its gastrointestinal parasites ***: The lyophilized aqueous decoction of leaves of S. senegalensis at concentrations of 0.10, 1.00, 3.00, 10.00 and 15.00 mg/m L was used on eggs and adult worms of Haemonchus contortus collected from gastrointestinal tract of small ***: The LC_(50) on adult worms was 6.79 mg/m L and 3.25 mg/m L for the leaves of S. senegalensis and the levamisole(reference drug), respectively. Inhibition of hatching assay showed a concentration-dependent manner with an inhibition of 93.63% at the concentration of 15.00 mg/m L of S. ***: These results indicate that the aqueous extract of S. senegalensis possesses an anthelmintic property and may justify its use in traditional medicine for the treatment of gastrointestinal parasites.

关键词： Saba senegalensis Anthelmintic properties Haemonchus contortus In vitro Burkina Faso

Usage Scenarios for Byte-Addressable Persistent Memory inHigh-Performance and Data Intensive Computing

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Journal of Computer Science & Technology 2021年第1期36卷 110-122页

作者： Michèle Weiland Bernhard Homölle EPCC The University of EdinburghEdinburgh EH89BTU.K. System Vertrieb Alexander GmbH Paderborn 33106Germany

Byte-addressable persistent memory(B-APM)presents a new opportunity to bridge the performance gap between main memory and *** this paper,we present the usage scenarios for this new technology,based on the capabilities of Intel’s *** outline some of the basic performance characteristics of DCPMM,and explain how it can be configured and used to address the needs of memory and I/O intensive applications in the HPC(high-performance computing)and data intensive *** decision trees are presented to advise on the configuration options for BAPM;their use is illustrated with two *** show that the flexibility of the technology has the potential to be truly disruptive,not only because of the performance improvements it can deliver,but also because it allows systems to cater for wider range of applications on homogeneous hardware.

关键词： byte-addressable data intensive memory intensive persistent

Interfacial processes and mechanisms of synergistic degradation of dichlorobiphenyl by white rot fungi and magnetite nanoparticles

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Science China Earth Sciences 2023年第9期66卷 2057-2065页

作者： le CHANG Guanghui YU Congqiang LIU Institute of Surface-Earth System Science School of Earth System ScienceTianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai RimBohai Coastal Critical Zone National Observation and Research StationTianjin UniversityTianjin 300072China

The rapid increase in the artificial syntheses of organic pollutants has raised widespread ***,the mechanisms by which fungi degrade these new organic pollutants in the environment and adapt to environmental stressors remain *** this study,Phanerochaete chrysosporium,a model white rot fungus,was used to explore the interfacial processes and mechanisms for synergistic degradation of 4,4′-dichlorobiphenyl(PCB15)with magnetite *** results showed that after 3 and 5 days of cultivation with Phanerochaete chrysosporium alone,the rates for PCB15 degradation were 32%and 65%,respectively,indicating that the white rot fungus itself was able to degrade the organic ***,the addition of magnetite nanoparticles significantly enhanced the degradation of PCB15 by Phanerochaete *** cocultivation for 3 and 5 days,the rates for PCB15 degradation increased to 42%and 84%,*** radiation-based Fourier transform infrared spectromicroscopy(SR-FTIR)showed that the magnetite particles were tightly adhered to the fungal hyphae and were unevenly distributed on the hyphal ***,cocultivation of the fungus and magnetite nanoparticles significantly enhanced the nanozymatic activity of magnetite.A linear regression model provided a significantly negative correlation(r=−0.96,plectron spectroscopy(XPS)revealed that the nanozymatic activity of magnetite was mainly governed by oxygen vacancies on the mineral surfaces rather than the iron ***,these findings increase our understanding of the powerful capabilities of fungi in terms of stress resistance and adaptation to extreme environments and provide new insights into fungal-mediated degradation of organic po

关键词： Magnetite nanoparticles Nanozymes Oxygen vacancies White rot fungi X-ray photoelectron spectroscopy Synchrotron radiation based FTIR spectromicroscopy Dichlorobiphenyl

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Impact of acoustic wave propagation characteristics on aerodynamic damping of rotor blades in a transonic axial compressor

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Chinese Journal of Aeronautics 2024年第11期37卷 168-187页

作者： Yongbo YU Yanrong WANG le HAN School of Energy and Power Engineering Beihang UniversityBeijing 100191China Collaborative Innovation Center for Advanced Aero-Engine Beijing 100191China Research Institute of Aero-Engine Beihang UniversityBeijing 100191China

The aeroelastic stability associated with the acoustic wave propagation characteristics of transonic rotor blades was numerically investigated in this *** influence of the vibration frequency on the aerodynamic damping of the first bending mode was primarily considered at different speeds,including both work and stall *** found that the state of acoustic wave propagation associated with aeroelastic instability is closely related to rotational *** low speeds near stall points,the risk of aeroelastic instability is confined to the upstream cut-off ***,at high speeds near stall points,aeroelastic instability may occur in both the downstream cut-off state and the acoustic wave propagation state of the upstream cut-off frequency,further expanding the range of the acoustic wave propagation state in which aeroelastic instability can *** research findings show that for suction surfaces,aerodynamic work is affected not only by acoustic wave propagation characteristics,but also by shock waves,radial flow,and reflux in the flow ***,for pressure surfaces,the acoustic wave propagation characteristics play a significant *** aeroelastic instability occurs,negative damping predominantly arises from the pressure *** investigate why lower-order modes are more prone to aeroelastic instability,specific simulations were conducted for the first bending and twisting modes under different operating conditions in the downstream cut-on *** the vibration frequency significantly exceeds the downstream cutoff frequency,the blade phase is minimally influenced by acoustic wave propagation characteristics,and the rotor is aeroelastically stable in these ***,there is an approximately linear increase in the unsteady pressure amplitude with increasing vibration frequency,and the aerodynamic work is predominantly influenced by the unsteady pressure amplitude.

关键词： Aeroelastic stability Nodal diameter Aerodynamic damping Acoustic wave propagation characteristic Vibration frequency

Binding Affinity of Novel Cyclodextrin Dimers to Ethyl Orange

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Chinese Chemical letters 2002年第10期13卷 1005-1006页

作者： le Xin SONG Department of Chemistry University of Science and Technology of ChinaHefei 230026

The interaction between ethyl orange (Eto, guest) and beta-cyclodextrin dimers (1asimilar tod, host) bridged with 2-t-butoxycarbonyl(Boc)-amino diacid was investigated. A remarkable synergic complexation of two caviti... 详细信息

关键词： beta-cyclodextrin inclusion compound amino acid

Hyperspectral Image Classification Based on A Multi-Scale Weighted Kernel Network

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Chinese Journal of Electronics 2022年第5期31卷 832-843页

作者： SUN le XU Bin LU Zhenyu School of Computer Science Nanjing University of Information Science and Technology Engineering Research Center of Digital Forensics Ministry of Education Nanjing University of Information Science and Technology School of Artificial Intelligence Nanjing University of Information Science and Technology

Recently, many deep learning models have shown excellent performance in hyperspectral image(HSI) classification. Among them, networks with multiple convolution kernels of different sizes have been proved to achieve richer receptive fields and extract more representative features than those with a single convolution kernel. However, in most networks, different-sized convolution kernels are usually used directly on multibranch structures, and the image features extracted from them are fused directly and simply. In this paper, to fully and adaptively explore the multiscale information in both spectral and spatial domains of HSI, a novel multi-scale weighted kernel network(MSWKNet) based on an adaptive receptive field is proposed. First, the original HSI cubic patches are transformed to the input features by combining the principal component analysis and one-dimensional spectral convolution. Then, a three-branch network with different convolution kernels is designed to convolve the input features, and adaptively adjust the size of the receptive field through the attention mechanism of each branch. Finally, the features extracted from each branch are fused together for the task of *** on three well-known hyperspectral data sets show that MSWKNet outperforms many deep learning networks in HSI classification.

关键词： multibranch structures image features convolution kernels multiple convolution kernels adaptive receptive field image classification feature extraction HSI classification single convolution kernel convolutional neural nets hyperspectral image classification representative features hyperspectral imaging geophysical image processing deep learning (artificial intelligence) multiscale weighted kernel network deep learning networks hyperspectral data sets three-branch network HSI cubic patches principal component analysis 1D spectral convolution different-sized convolution kernels

Finite element analysis of functionally graded sandwich plates with porosity via a new hyperbolic shear deformation theory

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Defence Technology（防务技术） 2022年第3期18卷 490-508页

作者： Pham Van Vinh le Quang Huy Department of Solid Mechanics Le Quy Don Technical University236 Hoang Quoc VietHanoiViet Nam Institute of Techniques for Special Engineering Le Quy Don Technical University236 Hoang Quoc VietHanoiViet Nam

This study focusses on establishing the finite element model based on a new hyperbolic sheareformation theory to investigate the static bending,free vibration,and buckling of the functionally graded sandwich plates with *** novel sandwich plate consists of one homogenous ceramic core and two different functionally graded face sheets which can be widely applied in many fields of engineering and defence *** discrete governing equations of motion are carried out via Hamilton’s principle and finite element *** computation program is coded in MATLAB software and used to study the mechanical behavior of the functionally graded sandwich plate with *** present finite element algorithm can be employed to study the plates with arbitrary shape and boundary *** obtained results are compared with available results in the literature to confirm the reliability of the present ***,a comprehensive investigation of the effects of several parameters on the bending,free vibration,and buckling response of functionally graded sandwich plates is *** numerical results shows that the distribution of porosity plays significant role on the mechanical behavior of the functionally graded sandwich plates。

关键词： Functionally graded sandwich plates Porous plates Hyperbolic shear deformation theory Bending analysis Free vibration analysis Buckling analysis