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Design, modeling, and evaluation of parallel continuum robots: A survey

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Science China(Technological Sciences) 2024年第3期67卷 673-695页

作者： CHEN GenLiang TANG ShuJie duan XuYang WANG Hao Meta Robotics Institute Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Mechanical Systems and Vibration Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Key Laboratory of Digital Manufacturing for Thin-Walled Structures Shanghai Jiao Tong UniversityShanghai 200240China

Parallel continuum robots(PCRs) have attracted increasing attention in the robotics community due to their simplicity in structure,inherence with compliance, and easiness of realization. Over the past decade, a variety of novel designs have been reported to enrich their diversity. However, there is a lack of systematic review of these emerging robots. To this end, this paper conducts a comprehensive survey on the mechanism design, kinetostatic modeling and analysis, and performance evaluation. For these robots, kinetostatic modeling plays a fundamental role throughout the design, analysis, and control stages. A systematic review of the existing approaches for kinetostatic modeling and analysis is provided, and a comparison is made to distinguish their differences. As well, a classification is made according to the characteristics of structure and actuation. In addition, performance evaluation on the workspace, stability, and singularity is also overviewed. Finally, the scenarios of potential applications are elaborated, and future research prospects are discussed. We believe that the information provided in this paper will be particularly useful for those who are interested in PCRs.

关键词： parallel continuum robots classification kinetostatic modeling performance evaluation

Study on site selection planning of urban electric vehicle charging station

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High Technology Letters 2024年第1期30卷 75-84页

作者：刘娜 CHENG Jiaxin duan Yukai School of Business Shanghai Dianji UniversityShanghai201306 P.R.China

The large-scale development of electric vehicles(EVs)requires numerous charging stations to serve them,and the charging stations should be reasonably laid out and planned according to the charging demand of electric *** the costs of both operators and users,a site selection model for optimal layout planning of charging stations is constructed,and a queuing theory approach is used to determine the charging pile configuration to meet the charging demand in the planning *** solve the difficulties of particle swarm global optimization search,the improved random drift particle swarm optimization(IRDPSO)and Voronoi diagram are used to jointly solve for the optimal layout of electric *** final arithmetic analysis verifies the feasibility and practicality of the model and algorithm,and the results show that the total social cost is minimized when the charging station is 9,the location of the charging station is close to the center of gravity and the layout is reasonable.

关键词： charging station electric vehicle(EV) improved random drift particle swarm optimization(IRDPSO) optimal planning

Few-shot image recognition based on multi-scale features prototypical network

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High Technology Letters 2024年第3期30卷 280-289页

作者： LIU Jiatong duan Yong School of Information Science Engineering Shenyang University of TechnologyShenyang 110870P.R.China Shenyang Key Laboratory of Advanced Computing and Application Innovation Shenyang 110870P.R.China

In order to improve the model􀆳s capability in expressing features during few-shot learning,a multi-scale features prototypical network(MS-PN)algorithm is *** metric learning algo-rithm is employed to extract image features and project them into a feature space,thus evaluating the similarity between samples based on their relative distances within the metric *** sufficiently extract feature information from limited sample data and mitigate the impact of constrained data vol-ume,a multi-scale feature extraction network is presented to capture data features at various scales during the process of image feature ***,the position of the prototype is fine-tuned by assigning weights to data points to mitigate the influence of outliers on the *** loss function integrates contrastive loss and label-smoothing to bring similar data points closer and separate dissimilar data points within the metric *** evaluations are conducted on small-sample datasets mini-ImageNet and *** method in this paper can achieve higher classification ***,in the 5-way 1-shot experiment,classification accuracy reaches 50.13%and 66.79%respectively on these two ***,in the 5-way 5-shot ex-periment,accuracy of 66.79%and 85.91%are observed,respectively.

关键词： few-shot learning multi-scale feature prototypical network channel attention label-smoothing

KeyEE:Enhancing Low-Resource Generative Event Extraction with Auxiliary Keyword Sub-Prompt

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Big Data Mining and Analytics 2024年第2期7卷 547-560页

作者： Junwen duan Xincheng Liao Ying An Jianxin Wang Hunan Key Laboratory of Bioinformatics School of Computer Science and EngineeringCentral South UniversityChangsha 410083China Big Data Institute Central South UniversityChangsha 410083China

Event Extraction(EE)is a key task in information extraction,which requires high-quality annotated data that are often costly to *** classification-based methods suffer from low-resource scenarios due to the lack of label semantics and fine-grained *** recent approaches have endeavored to address EE through a more data-efficient generative process,they often overlook event keywords,which are vital for *** tackle these challenges,we introduce KeyEE,a multi-prompt learning strategy that improves low-resource event extraction by Event Keywords Extraction(EKE).We suggest employing an auxiliary EKE sub-prompt and concurrently training both EE and EKE with a shared pre-trained language *** the auxiliary sub-prompt,KeyEE learns event keywords knowledge implicitly,thereby reducing the dependence on annotated ***,we investigate and analyze various EKE sub-prompt strategies to encourage further research in this *** experiments on benchmark datasets ACE2005 and ERE show that KeyEE achieves significant improvement in low-resource settings and sets new state-of-the-art results.

关键词： natural language processing Event Extraction(EE) Multi-Prompt Learning(MPL) low-resource

“Survival”and“death”in Céline’s novels

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Language and Semiotic Studies 2024年第2期10卷 153-166页

作者： huimin duan Soochow University SuzhouChina

Louis-Ferdinand Céline,a French writer of the twentieth century,was an important author during the two world wars in *** works,set against the backdrop of these wars,depict the various aspects of human nature during wartime.“Survival”and“Death”are important themes discussed in Céline’s *** the background of wars,“survival”becomes the instinct of characters in Céline’s works,but the threat of death is always *** the perspective of a doctor,Céline materializes“survival”and“death,”using metaphors such as“devouring,”“decomposition,”and“corrosion”to illustrate the viewpoint of“death on the installment plan,”vividly depicting the“imagination”and“fear”between“survival”and“death,”presenting the disasters and sufferings caused by wars,and expressing strong antiwar sentiments within a pessimistic view of life and *** using semiotic isotope as a tool,we study the thematic generation process of“survival and death,”analyzing the“surface-level image paths”of the text through the“discourse images,”and then delving into the deeper layers of the text to discover the inherent and shared nuclear seme features of these images and their repetition of information,namely semiotic isotope.

关键词： Céline semiotic isotope survival death imagination fear

基于非理想量子态制备的实际连续变量量子秘密共享方案

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物理学报 2024年第2期73卷 93-103页

作者：吴晓东黄端福建理工大学管理学院福州350118 中南大学电子信息学院长沙410083

连续变量量子秘密共享方案基于物理学基本定律,能够保证密钥信息的无条件安全.然而,在实际连续变量量子秘密共享方案中,量子态的制备往往并非是理想、完美的,会引入额外的过噪声,影响方案的安全性,因此有必要对其进行分析.本文提出基于... 详细信息

连续变量量子秘密共享方案基于物理学基本定律,能够保证密钥信息的无条件安全.然而,在实际连续变量量子秘密共享方案中,量子态的制备往往并非是理想、完美的,会引入额外的过噪声,影响方案的安全性,因此有必要对其进行分析.本文提出基于非理想量子态制备的实际连续变量量子秘密共享方案.具体而言,在所提出的方案中假定有多个用户,并且任意一个用户的非理想量子态制备,可以描述为相对应的不可信第三方采用相位非敏感放大器,对该用户的理想调制器与激光器进行放大操作.每个用户由于非理想量子态制备所引入的等效过噪声,可以通过相对应的相位非敏感放大器的增益参数进行全面与定量地计算.研究结果表明,连续变量量子秘密共享方案对非理想量子态制备所引入的过噪声非常敏感,因此不可避免地会降低其性能和安全性.幸运的是,本文利用相位非敏感放大器特定的增益公式,获得所提出方案对非理想量子态制备所引入的额外过噪声容忍度的上界限,有效解决由非理想量子态制备所带来的安全隐患.由于考虑了非理想量子态制备所引入的额外过噪声,因此相比于理想连续变量量子秘密共享方案,所提出的方案能够得到更紧的密钥率曲线.这些结果表明,本文所提出的方案能够对连续变量量子秘密共享方案的实际安全性进行改进与完善,为其实用化发展提供理论依据.

关键词：非理想量子态制备连续变量量子秘密共享

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Molecular Mechanism of Polysaccharides Extracted from Chinese Medicine Targeting Gut Microbiota for Promoting Health

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Chinese Journal of Integrative Medicine 2024年第2期30卷 171-180页

作者： ZHAO Wen-xiao WANG Tong ZHANG Ya-nan CHEN Qian WANG Yuan XING Yan-qing ZHENG Jun duan Chen-chen CHEN Lijun ZHAO Hai-jun WANG Shijun School of Nursing Shandong University of Traditional Chinese MedicineShandong University of Traditional Chinese MedicineJi'nan(250355)China Shandong Co-innovation Center of Classic Traditional Chinese Medicine Formula Shandong University of Traditional Chinese MedicineJi'nan(250355)China College of Traditional Chinese Medicine Shandong University of Traditional Chinese MedicineJinan(250355)China

The accumulating evidence revealed that gut microbiota plays an important role in pathological process of disease including obesity,type 2 diabetes mellitus,heart failure,and non-alcoholic fatty liver *** extracted from Chinese medicine(CM)can not only alleviate pathological status but also promote health by anti-inflammatory,regulating immunity,lowering blood glucose and lipids,anti-cancer,and *** alterations of gut microbiota composition and metabolism pathways are the potential mechanisms of CM polysaccharides *** addition,they exert functions through gut-organ axis or play an indirect role by synergistic actions with other drugs or components mediated by gut *** review summarizes the molecular mechanisms of CM polysaccharides interacted with intestinal microbial inhabitants as potential prebiotics forpromoting health.

关键词： Chinese medicine polysaccharides gut microbiota short-chain fatty acids lipopolysaccharides gut-organaxis synergistic actions

Chitosan-based thermosensitive hydrogel with long-term release of murine nerve growth factor for neurotrophic keratopathy

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Neural Regeneration Research 2024年第3期19卷 680-686页

作者： Jie Wu Yulei Huang Hanrui Yu Kaixiu Li Shifeng Zhang Guoqing Qiao xiao Liu Hongmei duan Yifei Huang Kwok-Fai So Zhaoyang Yang xiaoguang Li Liqiang Wang Department of Ophthalmology the Third Medical CenterChinese PLA General HospitalBeijingChina The PLA Medical College Department of NephrologyChinese PLA Institute of NephrologyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijingChina Department of Ophthalmology Hainan Hospital of Chinese PLA General HospitalSanyaHainan ProvinceChina Medical School of Chinese PLA BeijingChina Department of Neurobiology School of Basic Medical SciencesCapital Medical UniversityBeijingChina Guangdong-Hongkong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) GuangzhouGuangdong ProvinceChina Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences The University of Hong KongHong Kong Special Administrative RegionChina Center for Brain Science and Brain-Inspired Intelligence Guangdong-Hong Kong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina School of Engineering Medicine Beijing Key Laboratory for Biomaterials and Neural RegenerationBeihang UniversityBeijingChina Beijing International Cooperation Bases for Science and Technology on Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Big Data-Based Precision MedicineBeihang UniversityBeijingChina

Neurotrophic keratopathy is a persistent defect of the corneal epithelium,with or without stromal ulceration,due to corneal nerve deficiency caused by a variety of *** treatment options for neurotrophic keratopathy are *** this study,an ophthalmic solution was constructed from a chitosan-based thermosensitive hydrogel with long-term release of murine nerve growth factor(CTH-mNGF).Its effectiveness was evaluated in corneal denervation(CD)mice and patients with neurotrophic *** the preclinical setting,CTH-mNGF was assessed in a murine corneal denervation ***-mNGF was transparent,thermosensitive,and ensured sustained release of mNGF for over 20 hours on the ocular surface,maintaining the local mNGF concentration around 1300 pg/mL in *** denervation mice treated with CTH-mNGF for 10 days showed a significant increase in corneal nerve area and total corneal nerve length compared with non-treated and CTH treated mice.A subsequent clinical trial of CTH-mNGF was conducted in patients with stage 2 or 3 neurotrophic *** received topical CTH-mNGF twice daily for 8 *** sodium images,Schirmer’s test,intraocular pressure,Cochet-Bonnet corneal perception test,and best corrected visual acuity were *** total,six patients(total of seven eyes)diagnosed with neurotrophic keratopathy were *** 8 weeks of CTH-mNGF treatment,all participants showed a decreased area of corneal epithelial defect,as stained by ***,six out of seven eyes had fluorescence staining scores<***,best corrected visual acuity,intraocular pressure,Schirmer’s test and Cochet-Bonnet corneal perception test results showed no significant *** increase in corneal nerve density was observed by in vivo confocal microscopy after 8 weeks of CTH-mNGF treatment in three out of seven *** study demonstrates that CTH-mNGF is transparent,thermosensitive,and has sustained-release *** effecti

关键词： chitosan corneal reinnervation murine nerve growth factor neurotrophic keratopathy thermosensitive hydrogel

Injury and protection of spiral ganglion neurons

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Chinese Medical Journal 2024年第6期137卷 651-656页

作者： Beilei duan Kevin A.Peng Line Wang Department of Otorhinolaryngology Head and Neck SurgeryBeijing Friendship HospitalCapital Medical UniversityBeijing 100050China Department of Neurotology House ClinicLos AngelesCA 90017USA

Cochlear spiral ganglion neurons(SGNs)are bipolar ganglion cells and are the first neurons in the auditory transduction *** transmit complex acoustic information from hair cells to second-order sensory neurons in the cochlear nucleus for sound *** to SGNs causes largely irreversible hearing impairment because these neurons are highly differentiated cells and cannot regenerate,making treatment of sensorineural hearing loss(SNHL)arising from SGN injury *** exposed to ototoxic drugs or damaging levels of noise or when there is loss of neurotrophic factors(NTFs),aging,and presence of other factors,SGNs can be irreversibly damaged,resulting in *** has been found that NTFs and stem cells can induce regeneration among dead spiral ganglion *** this paper,we summarized the present knowledge regarding injury,protection,and regeneration of SGNs.

关键词： Spiral ganglion Injury Protection Auditory hair cell Ototoxic drugs Aminoglycosides Presbycusis