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Assembly Information Model Based on Knowledge Graph

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Journal of Shanghai Jiaotong university(Science) 2020年第5期25卷 578-588页

作者： CHEN Zhiyu BAO Jinsong ZHENG Xiaohu liu tianyuan College of Mechanical Engineering Donghua UniversityShanghai 201600China

There are heterogeneous problems between the CAD model and the assembly process *** the planning stage of assembly process,these heterogeneous problems can decrease the efficiency of information *** on knowledge graph,this paper proposes an assembly information model(KGAM)to integrate geometric information from CAD model,non-geometric information and semantic information from assembly process *** describes the integrated assembly process information as a knowledge graph in the form of“entity-relationship-entity”and“entity-attribute-value”,which can improve the efficiency of information *** the trial assembly stage of a certain type of aeroengine compressor rotor component as an example,KGAM is used to get its assembly process knowledge *** trial data show the query and update rate of assembly attribute information is improved by more than *** the query and update rate of assembly semantic information is improved by more than *** conclusion,KGAM can solve the heterogeneous problems between the CAD model and the assembly process document and improve the information interaction efficiency.

关键词： knowledge graph assembly process information model integrating

Aberrant epithelial cell interaction promotes esophageal squamous-cell carcinoma development and progression

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Signal Transduction and Targeted Therapy 2024年第1期9卷 279-294页

作者： Liping Chen Shihao Zhu tianyuan liu Xuan Zhao Tao Xiang Xiao Hu Chen Wu Dongxin Lin Department of Etiology and Carcinogenesis National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Key Laboratory of Cancer Genomic Biology Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Collaborative Innovation Center for Cancer Personalized Medicine Nanjing Medical UniversityNanjing 211166China CAMS Oxford Institute Chinese Academy of Medical SciencesBeijing 100006China Sun Yat-sen University Cancer Center State Key Laboratory of Oncology in South ChinaGuangzhou 510060China

Epithelial-mesenchymal transition(EMT)and proliferation play important roles in epithelial cancer formation and progression,but what molecules and how they trigger EMT is largely *** we performed spatial transcriptomic and functional analyses on samples of multistage esophageal squamous-cell carcinoma(ESCC)from mice and humans to decipher these critical *** investigating spatiotemporal gene expression patterns and cell–cell interactions,we demonstrated that the aberrant epithelial cell interaction via EFNB1-EPHB4 triggers EMT and cell cycle mediated by downstream SRC/ERK/AKT *** aberrant epithelial cell interaction occurs within the basal layer at early precancerous lesions,which expands to the whole epithelial layer and strengthens along the cancer development and *** analysis revealed that the aberrant EFNB1-EPHB4 interaction is caused by overexpressedΔNP63 due to TP53 mutation,the culprit in human ESCC *** results shed new light on the role of TP53-TP63/ΔNP63-EFNB1-EPHB4 axis in EMT and cell proliferation in epithelial cancer formation.

关键词： esophageal TP53 squamous

Judging the Normativity of PAF Based on TFN and NAN

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Journal of Shanghai Jiaotong university(Science) 2020年第5期25卷 569-577页

作者： LI Zhiqiang BAO Jinsong liu tianyuan WANG Jiacheng College of Mechanical Engineering Donglma UniversityShanghai 201600China

The normativity of workers'actions during producing has a great impact on the quality of the products and the safety of the operation *** studies mainly focused on the normativity of each single producing action instead of considering the normativity of continuous producing actions,which is defined as producing action flow(PAF)in this paper,during operation *** this issue,a normativity judging method based on two-LSTM fusion network(TFN)and normativity-aware attention network(NAN)is ***,TFN is designed to detect and recognize the producing actions based on skeleton sequences of a worker during complete operation process,and PAF data in sequential form are *** is built to allocate difTerent levels of attention to each producing action within the sequence of *** by this means,an efficient normativity judging is *** combustor surface cleaning(CSC)process of rocket engine is taken as the experimental case,and the CSC-Action2D dataset is established for *** results show the high performance of TFN and *** the effectiveness of the proposed method for PAF normativity judging.

关键词： producing action normativity sequential model attention mechanism deep learning

Body color plasticity of Diaphorina citri reflects a response to environmental stress

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Insect Science 2024年第3期31卷 937-952页

作者： Jiayao Fan Feng Shang Huimin Pan Chenyang Yuan tianyuan liu Long Yi Jinjun Wang Wei Dou Key Laboratory of Entomology and Pest Control Engineering College of Plant ProtectionSouthwest UniversityChongqingChina Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River(Ministry of Education) Southwest UniversityChongqingChina Academy of Agricultural Sciences Southwest UniversityChongqingChina National Navel Orange Engineering Research Center Gannan Normal UniversityGanzhouJiangxi ProvinceChina

Body color polyphenism is common in Diaphorina *** studies compared physiological characteristics in ***,but the ecological and biological significance of its body color polyphenism remains poorly *** studied the ecological and molecular effects of stressors related to body color in *** or low temperature induced a high proportion of gray morphs,which had smaller bodies,lower body weight,and greater susceptibility to the insecticide *** performed transcriptomic and metabolomics analysis of 2 color morphs in *** expression dynamics revealed that the differentially expressed genes were predominantly involved in energy metabolism,including fatty acid metabolism,amino acid metabolism,and carbohydrate *** these genes,plexin,glycosidase,phospholipase,take out,trypsin,and triacylglycerol lipase were differentially expressed in 2 color morphs,and 6 hsps(3 hsp70,hsp83,hsp90,hsp68)were upregulated in gray *** metabolome data showed that blue morphs exhibited a higher abundance of fatty acid and amino acid,whereas the content of carbohydrates was elevated in gray *** study partly explains the body color polyphenism of *** and provides insights into the molecular changes of stress response of ***.

关键词： body color energy metabolism environmental stress phenotypic plasticity polyphenism trade-off

Data-Driven Predictive Maintenance Approach for Spinning Cyber-Physical Production System

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Journal of Shanghai Jiaotong university(Science) 2020年第4期25卷 453-462页

作者： FAROOQ Basit BAO Jinsong LI Jie liu tianyuan YIN Shiyong College of Mechanical Engineering Donghua UniversityShanghai 201600China

The fundamental process of predictive maintenance is prognostics and health management,and it is the tool resulting in the development of many algorithms to predict the remaining useful life of industrial equipment.A new data-driven predictive maintenance and an architectural impulse,based on a regularized deep neural network using predictive analytics,are proposed successfully for ring spinning *** paradigm shift in computational infrastructures enormously puts pressure on large-scale linear and non-linear automated assembly systems to eliminate and cut down unscheduled downtime and unexpected *** sensor network designed for the scheduling process comprises different critical components of the same spinning machine frames containing more than thousands of spindles attached to *** established a genetic algorithm based on multi-sensor performance assessment and prediction procedure for the spinning *** show that it operates with a relatively less amount of training data sets but takes advantage of larger volumes of *** integrated system aims to prognosticate abnormalities,disturbances,and failures by providing condition-based monitoring for each component,which makes it more accurate to locate the defined component failures in the current spinning spindles by using smart agents during the operations through the neural sensing network.A case study has provided to demonstrate the feasibility of the proposed predictive model for highly dynamic,high-speed textile spinning system through real-time data sensing and signal processing via the industrial Internet of Things.

关键词： predictive maintenance prognostics and health management smart spinning manufacturing cyberphysical production system

An Empirical Study on the Relationship between Urbanization and Changes in Resources and Environment

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Asian Agricultural Research 2014年第9期6卷 72-77页

作者： tianyuan liu Yu JIA College of Economics and Management Southwest University

The expansion of urban scale is the inevitable outcome during urbanization,and it has exacerbated the contradiction between urbanization,and resources and environment. Based on the environmental indicator data related to the urbanization of Chongqing Municipality during the period 2000- 2012,this article uses regression analysis and ARIMA forecasting model to study the impact of rapid urbanization on the resources and environment. It is found that urbanization is significantly and positively correlated with the built-up area,the annual electricity consumption,domestic waste water discharge amount,and industrial waste gas emission,but significantly and negatively correlated with the industrial solid waste discharge amount; before 2020,along with the improvement of the level of urbanization in Chongqing,the degree of deterioration of the environment and resources will be further increased; after 2020,urbanization and ecological environment will be in a new round of balance,and the resources and environment will be improved.

关键词： Urbanization Resources and environment Sustainable

Vesicular transport-related genes in Diaphorina citri are involved in the process of Candidatus Liberibacter asiaticus infection

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Journal of Integrative Agriculture 2024年第12期23卷 4136-4146页

作者： Yingzhe Yuan Tao Peng Aijun Huang Jun He Chenyang Yuan tianyuan liu Long Yi Xuejin Cui Xuefeng Wang Changyong Zhou National Citrus Engineering and Technology Research Center Citrus Research InstituteSouthwest UniversityChongqing 400712China College of Life Sciences Yulin CollegeYulin 719000China National Navel Orange Engineering Research Center Gannan Normal UniversityGanzhou 341000China Key Laboratory of Entomology and Pest Control Engineering College of Plant ProtectionSouthwest UniversityChongqing 400715China

Asian citrus psyllid(ACP,Diaphorina citri)is the major vector of Candidatus Liberibacter asiaticus(CLas),which is a bacterial pathogen causing the devastating citrus Huanglongbing(HLB)*** citri is known to carry CLas in a persistent and propagative *** studies have suggested that CLas may use the vesicular structures of *** cells as its propagation ***,the mechanisms by which CLas enters the *** cells and how vesicle-mediated trafficking is involved remain *** this study,we monitored the titer change of CLas in *** nymphs during the process of CLas acquisition from feeding on infected citrus *** found that the titer of CLas increased with the acquisition access *** infection,there was a significant upregulation in the expression of several vesicular transport-related genes in *** titer of CLas was significantly reduced in the midgut and whole insect body when endocytosis and the endosome network in *** were ***,silencing the *** clathrin-heavy chain gene also led to a reduction in the CLas titer in *** results suggest that CLas infection upregulates the genes related to vesicular transport in ***,which facilitates the invasion of endocytosis-dependent pathogens.

关键词： Huanglongbing endocytosis vesicular trafficking CLas acquisition

Generation Approach of Human-Robot Cooperative Assembly Strategy Based on Transfer Learning

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Journal of Shanghai Jiaotong university(Science) 2022年第5期27卷 602-613页

作者： LÜQibing liu tianyuan ZHANG Rong JIANG Yanan XIAO Lei BAO Jingsong College of Mechanical Engineering Donghua UniversityShanghai201620China

In current small batch and customized production mode,the products change rapidly and the personal demand increases ***-robot cooperation combining the advantages of human and robot is an effective way to solve the complex ***,the poor reusability of historical assembly knowledge reduces the adaptability of assembly system to different *** cross-domain strategy transfer,we propose a human-robot cooperative assembly(HRCA)framework which consists of three main modules:expression of HRCA strategy,transferring of HRCA strategy,and adaptive planning of motion *** on the analysis of subject capability and component properties,the HRCA strategy suitable for specific tasks is *** the reinforcement learning is established to optimize the parameters of target encoder for feature *** classification and segmentation,the actor-critic model is built to realize the adaptive path planning with progressive neural ***,the proposed framework is verified to adapt to the multi-variety environment,for example,power lithium batteries.

关键词： human-robot cooperation strategy transfer reinforcement learning progressive neural network power lithium battery

Research on improving the system of account rate in occupational pension

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International English Education Research 2015年第9期 73-75页

作者： Hou lanlan liu tianyuan Shanghai University of Engineering Science Shanghai 201620 China

In the reform of government organizations and institutions of China, we put forward the establishment of personal account system in occupational pension, and the introduction of the ＂account＂ management model of the non real account accumulation. This paper analyzes the current situation of personal accounts in our country, and puts forward that the account rate of bank deposit can not resist inflation, and can not reflect the real return rate of China＇s pension funds, which is not conducive to the preservation and appreciation of personal account funds. On the basis of the above, the paper puts forward that the account rate should not only consider the level of economic development and inflation, but also to adapt to the financial payment ability, and establish the personal account risk reserve fund system and other improvement measures, and strive to achieve the sustainable development of the personal account system.

关键词： occupational pension personal accounts account rate