检索结果-内蒙古大学图书馆

A tree-shaped motion strategy for robustly executing robotic assembly tasks

Journal of Zhejiang University-Science A(Applied Physics & engineering) 2010年第12期11卷 986-991页

作者： Yusuke BOTA Hajime MIZUYAMA Akio NOdA Tatsuya NAGATANI Ken-ichi TANAKA Department of Mechanical Engineering and Science Kyoto University Yoshida-Honmachi Advanced Technology R&D Center Mitsubishi Electric Corporation 8-1-1Tsukaguchi-Honmachi

An assembly robot needs to be capable of executing an assembly task robustly under various *** attain this goal,we use a task sequence tree model originally proposed for manual *** model regards an assembly task under uncertainties as a transformation of the contact state *** concept may contain several contact states with probabilities but these are transformed through a series of task elements into the contact state concept having only the goal state at the *** transformed contact state concept can be classified according to the terminal condition of each task ***,the whole assembly task can be designed as a tree-shaped contingent strategy called a task sequence *** paper proposes a systematic approach for reconfiguring a task sequence tree model for application to a robotic assembly *** addition,by taking a 2d peg-in-hole insertion task to be performed by a robot equipped with a force sensor as an example,we confirm that the proposed approach can provide a robust motion strategy for the task and that the robot can actually execute the task robustly under bounded uncertainty according to the strategy.

关键词： Active compliant motion Contact states Motion strategy robotic assembly Task sequence tree

来源：评论

学校读者我要写书评

暂无评论

Amyloid cross-seeding between Ab and hIAPP in relation to the pathogenesis of Alzheimer and type 2 diabetes

引用

Chinese Journal of Chemical engineering 2021年第2期34卷 225-235页

作者： Yanxian Zhang Yijing Tang dong Zhang Yonglan Liu Jian He Yung Chang Jie Zheng Department of Chemical Biomolecularand Corrosion EngineeringThe University of AkronOHUSA Department of Chemical Engineering R&D Center for Membrane TechnologyChung Yuan Christian UniversityTaoyuanTaiwanChina

Amyloid cross-seeding of different amyloid proteins is considered as a highly possible mechanism for exacerbating the transmissible pathogenesis of protein misfolding disease(PMds)and for explaining a molecular link between different PMds,including Alzheimer disease(Ad)and type 2 diabetes(T2d),Ad and Parkinson disease(Pd),and Ad and prion *** them,Ad and T2d are the most prevalent PMds,affecting millions of people globally,while Ab and hIAPP are the causative peptides responsible for Ad and T2d,*** clinical and epidemiological evidences lead to a hypothesis that the cross-seeding of Ab and hIAPP is more biologically responsible for a pathological link between Ad and *** this review,we particularly focus on(i)the most recent and important findings of amyloid cross-seeding between Ab and hIAPP from in vitro,in vivo,and in silico studies,(ii)a mechanistic role of structural compatibility and sequence similarity of amyloid proteins(beyond Ab and hIAPP)in amyloid cross-seeding,and(iii)several current challenges and future research directions in this lessstudied *** of amyloid cross-seeding hopefully provides some mechanistic understanding of amyloidogenesis and inspires more efforts for the better design of next-generation drugs/strategies to treat different PMds simultaneously.

关键词： Amyloid peptide Amyloid aggregation Amyloid cross-seeding Amyloid-b hIAPP Protein misfolding

来源：评论

学校读者我要写书评

暂无评论

Hot deformation and dynamic recrystallization Behavior of Austenite-Based Low-density Fe–Mn–Al–C Steel

引用

Acta Metallurgica Sinica(English Letters) 2016年第5期29卷 441-449页

作者： Ya-Ping Li ren-Bo Song Er-ding Wen Fu-Qiang Yang School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China R&D Center BAIC Motor Corporation LTDBeijing 101300China

The hot deformation and dynamic recrystallization （drX） behavior of austenite-based Fe-27Mn-ll.5A1- 0.95C steel with a density of 6.55 g cm-3 were investigated by compressive deformation at the temperature range of 900-1150 ℃ and strain rate of 0.01-10 s-1. Typical drX behavior was observed under chosen deformation conditions and yield-point-elongation-like effect caused by drX of 6-ferrite. The flow stress characteristics were determined by drX of the 6-ferrite at early stage and the austenite at later stage, respectively. On the basis of hyperbolic sine function and linear fitting, the calculated thermal activation energy for the experimental steel was 294.204 kJ mo1-1. The occurrence of drX for both the austenite and the 6-ferrite was estimated and plotted by related Zener-Hollomon equations. A drX kinetic model of the steel was established by flow stress and peak strain without considering dynamic recovery and 6-ferrite drX. The effects of deformation temperature and strain rate on drX volume fraction were discussed in detail. Increasing deformation temperature or strain rate contributes to drX of both the austenite and the 6-ferrite, whereas a lower strain rate leads to the austenite grains growth and the 6-ferrite evolution, from banded to island-like structure.

关键词： Fe-Mn-AI-C steel Hot deformation dynamic recrystallization Yield-point-elongation-likeeffect

来源：评论

学校读者我要写书评

暂无评论

APPLICATION OF WAVELET TrANSFOrM ON dIAGNOSIS ANd PrEdICTION OF MILLING CHATTEr

引用

Chinese Journal of Mechanical engineering 2007年第3期20卷 67-70页

作者： LUO Ming-Je Department of Mechanical Engineering R&D Center for Membrane Technology Chung Yuan Christian University Chung-Li 32023 Taiwan China

In order to avoid the accuracy deterioration or tool damage caused by milling chatter, it is necessary to have an efficient and reliable diagnosis system that can on-line predict/detect the occur-rence of chatter. The diagnosis/predicting system proposed is to on-line process and analysis the vi-bration signals of the milling machine measured by accelerometers. According to the analysis results, the system will be able to detect/predict the occurrence of the chatter. The diagnosis algorithm is, first, collecting both the normal signals and chatter signals from milling processes, and then, converting the signals through wavelet transform and fast Fourier transform （FFT）. Since the converted chatter sig-nals exhibit different characteristics from the normal signals, through defining the characteristic val-ues, such as root-mean-square value, max value, and ratio of peak value to root-mean-square value, etc, a diagnosis reference library that contains the distribution of these characteristic values is built for diagnosis. When a diagnosis is executing, the characteristic value of the measured signals is con-trasted with the diagnosis reference. The approach index which shows the possibility of occurrence of milling chatter will, then, be calculated through the diagnosis system. Cutting experiments are con-ducted to verify the proposed diagnosis system. The results show the success of early chatter detecting for the system.

关键词： Chatter On-line diagnosis Prediction Wavelet transform

来源：评论

学校读者我要写书评

暂无评论

SO 3 Li-grafted ion-conducting agents for graphite-based lithium-ion batteries with extended cycle life

引用

Chinese Chemical Letters 2025年

作者： Shijie Liao dongming Cheng Xinyan Xu Qiyue Li Shengzhe Xu Jianchao Zhang Helei Wei Ying Wei Qi Li Kai Li Zihan Long Yuanyuan Luo Yunhui Huang Mingfeng Tan Bo Lin Henghui Xu School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Global R&D Center Guangxi Liugong Metathings Technology Co. Ltd. Liuzhou 545007China

Graphite, the most widely used anode material in lithium-ion batteries, faces significant limitations due to sluggish lithium-ion diffusion across the conventional organic solid electrolyte interphase (SEI) during cycling. In this work, we propose the incorporation of SO 3 Li-grafted graphene as an ion-conducting agent (ICA) to enhance lithium-ion transport kinetics within graphite anodes. The –SO 3 Li functional groups regulate the Li + solvation structure through anion-solvent dipole interactions, promoting the formation of a lithium fluoride (LiF)-rich SEI that ensures uniform lithium-ion flux and significantly extends battery cycle life. This SO 3 Li-grafted ICA also mitigates mechanical strain within the graphite anode during repeated cycling, improving structural integrity over long-term operation, evidenced by fiber optic sensing technology. As a result, a 3 Ah Gr||LiFePO 4 pouch cell incorporating this functionalized ion-conducting agent achieves excellent cycling performance, retaining 86.4% of its capacity after 1200 cycles at 1 C. These findings demonstrate the effectiveness of functionalized ICAs in addressing the intrinsic limitations of graphite, providing a promising strategy for developing long-life lithium-ion batteries for practical energy storage applications.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Multimodal misinformation detection based on the multi-granularity consistency

引用

Neurocomputing 2025年 644卷

作者： Zhang, Shibo Chen, Hongchang Liu, Shuxin Li, ran Jiang, HaoCong dong, Liang Institute of Information Technology PLA Information Engineering University Henan Zheng Zhou450002 China National Digital Switching System Engineering and Technological R&D Center Henan Zheng Zhou450002 China

In the current era of information proliferation, social media platforms frequently present multimodal data that may propagate misinformation. To address this challenge, computer vision techniques have been increasingly applied to online misinformation detection. Existing approaches often concentrate on learning deep semantic features from text and images without sufficiently exploring coherent alignments across multiple granular levels. This could hinder the construction of a comprehensive multimodal detection framework for misinformation detection. To overcome these issues, in this paper, we propose a three-level granularity consistency detection framework that explores image-text alignments at fine-grained, medium-grained, and coarse-grained levels. Meanwhile, we delve into the hierarchical structures of two modalities as well as the intricate semantic relationships between them. Specifically, our framework models token-level consistency through a multi-head cross-attention mechanism, phrase-level consistency via a graph neural network (GNN), and global-level consistency using a contrastive language-image pre-training model (CLIP), respectively. An adaptive fusion module then integrates these consistency features across all three granularities, enabling more nuanced and robust multimodal misinformation detection. Extensive experiments conducted on multiple benchmark datasets demonstrate that our approach substantially improves the performance of multimodal misinformation detection. © 2025

关键词： Tweets

来源：评论

学校读者我要写书评

暂无评论

Bend Test of Concrete Power Poles

引用

Materials Performance 2020年第9期59卷 50-53页

作者： Aghajani, Abbas Aghajani, Behnaz Subsea R&D Center Isfahan University of Technology Isfahan Iran Department of Civil Engineering Isfahan University of Technology Isfahan Iran

Concrete beams should be resistant against the influence of corrosive agents, environmental degradation, and mechanical forces. For this purpose, the arrangement of reinforcement, concrete mix design, and pole dimensions must be designed to have good durability in field operation. To ensure the quality of concrete poles, laboratory tests and bending tests of the final product are performed. The bend test can determine final quality of the poles. In this article, the effect of two different concrete mixing designs is investigated against the pole’s bend strength behavior. © 2020 NACE International. All rights reserved.

关键词： Concrete mixing

来源：评论

学校读者我要写书评

暂无评论

Structure-Activity relationship and Sensory Analysis of Butyryl-Amino Acids as Potent Umami Enhancers

SSRN

引用

SSrN 2025年

作者： Wu, Jing Li, Jun Hu, Xiao Lai, Shiqin Yang, Wenhua Huang, Sheng duan, dengle Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food Ministry of Agriculture and Rural College of Light Industry and Food Zhongkai University of Agriculture and Engineering Guangzhou510225 China Key Laboratory of Aquatic Product Processing Ministry of Agriculture and Rural Affairs National R&D Center for Aquatic Product Processing South China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Guangzhou510300 China School of Food Science and Technology South China University of Technology Guangzhou510640 China

Umami taste enhancers play a crucial role in improving the palatability and flavor profile of food products. This study investigated the umami-enhancing properties and structure-activity relationships of butyryl-amino acids using molecular docking, sensory evaluation, and multivariate analysis. Molecular docking revealed that butyryl-Gln, butyryl-Arg, butyryl-Tyr, butyryl-Phe, and butyryl-Trp exhibited the highest binding affinities for umami taste receptors (T1r3). Sensory evaluation confirmed their potent umami-enhancing effects, with butyryl-Gln and butyryl-Phe showing the lowest thresholds and the most pronounced effects on umami taste. Multivariate analysis identified key structural features, such as lower molecular weight, shorter side chain length, optimal hydrophobicity, and fewer hydrogen bonding moieties, as important contributors to enhanced umami taste perception. Interaction analysis of the butyryl-amino acids with specific amino acid residues in the umami taste receptor highlighted the crucial roles of Ala302, Gly168, Val187, Ser148, Ser170, Ser276, and Glu148 in modulating various aspects of umami taste. © 2025, The Authors. All rights reserved.

关键词： Hydrogen bonds

来源：评论

学校读者我要写书评

暂无评论

High-temperature performance prediction of iron ore fines and the ore-blending programming problem in sintering

引用

International Journal of Minerals,Metallurgy and Materials 2014年第8期21卷 741-747页

作者： Bing-ji Yan Jian-liang Zhang Hong-wei Guo Ling-kun Chen Wei Li School of Metallurgical and Ecological Engineering University of Science and Technology Beijing State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing R&D Center of Wuhan Iron and Steel (Group) Corporation

The high-temperature performance of iron ore fmes is an important factor in optimizing ore blending in sintering. However, the application of linear regression analysis and the linear combination method in most other studies always leads to a large deviation from the desired results. In this study, the fuzzy membership functions of the assimilation ability temperature and the liquid fluidity were proposed based on the fuzzy mathematics theory to construct a model for predicting the high-temperature performance of mixed iron ore. Comparisons of the prediction model and experimental results were presented. The results illustrate that the prediction model is more accurate and effective than previously developed models. In addition, fuzzy constraints for the high-temperature performance of iron ore in this research make the results of ore blending more comparable. A solution for the quantitative calculation as well as the programming of fuzzy constraints is also introduced.

关键词： iron ores blending sintering high temperature properties prediction programming

来源：评论

学校读者我要写书评

暂无评论

Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

引用

Frontiers of Chemical Science and engineering 2022年第11期16卷 1536-1559页

作者： Lixin Xing Jiaming Wang Xuehua ruan Gaohong He State Key Laboratory of Fine Chemicals R&D Center of Membrane Science and TechnologySchool of Chemical EngineeringDalian University of TechnologyDalian 116023China School of Chemical Engineering at Panjin Campus Dalian University of TechnologyPanjin 124221China

Poly(ether−ether ketone)(PEEK)is a linear aromatic macromolecule,which can form semi-crystalline aggregative status,allowing PEEK materials to have strong environment tolerance and excellent physicochemical *** materials have become a promising alternative to fabricate particular membranes used in extreme *** the past few decades,many researches and evolutions have emerged in membrane fabrication with PEEK materials and its applications for treating organic solvents and their mixtures;however,there are little systematic and comprehensive literature to summarize fabrication approaches,compile applications,and elaborate PEEK property-structure *** this review,the main approaches to fabricate PEEK-based membranes are illustrated concretely,including conventional thermal-induced and non-solvent-induced phase separation,and novel chemical-induced crystallization;the representative applications in ultrafiltration,nanofiltration and membrane contactor containing organic solvents are demonstrated ***,the mechanism to tune PEEK solubility in solvents,which can be achieved by altering monomers in synthesis processes or changing membrane preparation routes,is deeply ***,the existing problems and the future prospects are also *** review provides positive guidance for designing and fabricating membranes using PEEK and its derivative materials for task-specific applications in harsh conditions.

关键词： PEEK phase inversion solvent-resistant membrane nanofiltration membrane contactor

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：