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Cooperative Optimization of Reconfigurable Machine Tool Configurations and Production Process Plan

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Chinese Journal of Mechanical Engineering 2012年第5期25卷 982-989页

作者： XIE Nan li aiping XUE Wei Sino-German College of Applied Science Tongji University Shanghai 201804 China Institute of AdvancedManufacturing Technology Tong/i University Shanghai 201804 China College of Mechanical & Electrical Engineering Wenzhou University Wenzhou 325000 China

The production process plan design and configurations of reconfigurable machine tool （RMT） interact with each other. Reasonable process plans with suitable configurations of RMT help to improve product quality and reduce production cost. Therefore, a cooperative strategy is needed to concurrently solve the above issue. In this paper, the cooperative optimization model for RMT configurations and production process plan is presented. Its objectives take into account both impacts of process and configuration. Moreover, a novel genetic algorithm is also developed to provide optimal or near-optimal solutions： firstly, its chromosome is redesigned which is composed of three parts, operations, process plan and configurations of RMTs, respectively; secondly, its new selection, crossover and mutation operators are also developed to deal with the process constraints from operation processes （OP） graph, otherwise these operators could generate illegal solutions violating the limits; eventually the optimal configurations for RMT under optimal process plan design can be obtained. At last, a manufacturing line case is applied which is composed of three RMTs. It is shown from the case that the optimal process plan and configurations of RMT are concurrently obtained, and the production cost decreases 6.28% and nonmonetary performance increases 22%. The proposed method can figure out both RMT configurations and production process, improve production capacity, functions and equipment utilization for RMT.

关键词： reconfigurable manufacturing system reconfigurable machine tool configuration process plan cooperative optimization model

Optimization of line Configuration and Balancing for Flexible Machining lines

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Chinese Journal of Mechanical Engineering 2016年第3期29卷 579-587页

作者： liU Xuemei li aiping CHEN Zurui College of Mechanical Engineering Tongji University

line configuration and balancing is to select the type of line and allot a given set of operations as well as machines to a sequence of workstations to realize high-efficiency production. Most of the current researches for machining line configuration and balancing problems are related to dedicated transfer lines with dedicated machine workstations. With growing trends towards great product variety and fluctuations in market demand, dedicated transfer lines are being replaced with flexible machining line composed of identical CNC machines. This paper deals with the line configuration and balancing problem for flexible machining lines. The objective is to assign operations to workstations and find the sequence of execution, specify the number of machines in each workstation while minimizing the line cycle time and total number of machines. This problem is subject to precedence, clustering, accessibility and capacity constraints among the features, operations, setups and workstations. The mathematical model and heuristic algorithm based on feature group strategy and polychromatic sets theory are presented to find an optimal solution. The feature group strategy and polychromatic sets theory are used to establish constraint model. A heuristic operations sequencing and assignment algorithm is given. An industrial case study is carried out, and multiple optimal solutions in different line configurations are obtained. The case studying results show that the solutions with shorter cycle time and higher line balancing rate demonstrate the feasibility and effectiveness of the proposed algorithm. This research proposes a heuristic line configuration and balancing algorithm based on feature group strategy and polychromatic sets theory which is able to provide better solutions while achieving an improvement in computing time.

关键词： flexible machining line line balancing line configuration constraints model optimization

Effect of rolling deformation on microstructure and texture of spray-deposited magnesium alloy containing Mg-Nd-Zn typed LPSO

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Journal of Materials Science & Technology 2017年第7期33卷 630-636页

作者： Zhenliang li Fei liu aiping Yuan Baoyu Duan Yiming li Xiaowei li School of Materials and Metallurgy Inner Mongolia University of Science & Technology Baotou 014010 China Analysis and Test Center Inner Mongolia University of Science & Technology Baotou 014010 China

Billets of Mg-9Al-3Zn-1Mn-6Ca-2Nd alloy were produced by spray-deposition（the Osprey process）.Effect of rolling deformation（T = 350？C, ε = 5%, 10%, and 15%, respectively） on microstructure and texture evolution of the Mg-9Al-3Zn-1Mn-6Ca-2Nd alloy was investigated by scanning electron microscopy（SEM）, transmission electron microscopy（TEM） and X-ray diffraction（XRD）. Results show that at pass reduction of ε = 5%, 10% and 15% at 350？C respectively, Mg-Nd-Zn typed 24R-LPSO structure was formed in（Ca, Nd）Al2phase（C15 Laves phase）. With the increase in pass reduction（i.e. 5%, 10% and 15%）, the texture pole density level of basal texture（0002） changed little and pyramidal texture（10 1ˉ3） were *** contrast, those of prismatic texture {101ˉ0} 〈11 2ˉ0〉 were increased initially and followed by a reduction, indicating texture randomization in the grain-refined Mg alloy. The combined contribution of LPSO phase and C15 phase was key to randomize the texture of the grain-refined Mg alloy. It was noted that the microcosmic plastic deformation of LPSO phase and nanometer-sized dispersed C15 phase impeded dislocation movement, led to dislocation tangles, and facilitated recrystallization.

关键词： Mg alloy Sub-cells Texture randomization LPSO phase Microcosmic plastic deformation

An inertial stability and tracking control method for the nonlinear driving missile launcher 36

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An inertial stability and tracking control method for the no...

A Practical Approach to Constructing a Knowledge Graph for Cybersecurity

第36届中国控制会议

作者： Xiaoming Jiang aiping li Chang Zhang Shanghai Electro-Mechanical Engineering Institute

ISBN: (纸本)9781538629185

An inertial stability and tracking control method based on parameter identification is presented for the nonlinear driving missile *** driving structure of the missile launcher is analyzed,and the kinematic relationships and dynamical equations are *** driving part will be identified by the polynomials fitting *** with the traditional inertial stability tracking control,the polynomials fitting function is applied to the inertial decoupling control,which will make the inertial stability control loop *** inverse of polynomials fitting function is added to the tracking feedback and feedforward controllers,which can satisfy the requirements of system stability and tracking *** the proposed method is applied to the mobile launch *** and experimental results validate the effectiveness of the method.

关键词： missile launcher nonlinear driving inertial stability control tracking control parameter identification

来源： cnki会议评论

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Engineering 2018年第1期4卷 53-60页

作者： Yan Jia Yulu Qi Huaijun Shang Rong Jiang aiping li School of Computer Science National University of Defense Technology Changsha 410073 China

Cyberattack forms are complex and varied, and the detection and prediction of dynamic types of attack are always challenging tasks. Research on knowledge graphs is becoming increasingly mature in many fields. At present, it is very significant that certain scholars have combined the concept of the knowledge graph with cybersecurity in order to construct a cybersecurity knowledge base. This paper presents a cybersecurity knowledge base and deduction rules based on a quintuple model. Using machine learning, we extract entities and build ontology to obtain a cybersecurity knowledge base. New rules are then deduced by calculating formulas and using the path-ranking algorithm. The Stanford named entity rec- ognizer （NER） is also used to train an extractor to extract useful information. Experimental results show that the Stanford NER provides many features and the useGazettes parameter may be used to train a rec- ognizer in the cybersecurity domain in preparation for future work.

关键词： Cybersecurity Knowledge graph Knowledge deduction

A Credit Card Fraud Detection Model Based on Multi-Feature Fusion and Generative Adversarial Network

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Computers, Materials & Continua 2023年第9期76卷 2707-2726页

作者： Yalong Xie aiping li Biyin Hu liqun Gao Hongkui Tu College of Computer National University of Defense TechnologyChangsha410003China Credit Card Department Bank of ChangshaChangsha410016China

Credit Card Fraud Detection(CCFD)is an essential technology for banking institutions to control fraud risks and safeguard their *** imbalance and insufficient representation of feature data relating to credit card transactions are two prevalent issues in the current study field of CCFD,which significantly impact classification models’*** address these issues,this research proposes a novel CCFD model based on Multifeature Fusion and Generative Adversarial Networks(MFGAN).The MFGAN model consists of two modules:a multi-feature fusion module for integrating static and dynamic behavior data of cardholders into a unified highdimensional feature space,and a balance module based on the generative adversarial network to decrease the class imbalance *** effectiveness of theMFGAN model is validated on two actual credit card *** impacts of different class balance ratios on the performance of the four resamplingmodels are analyzed,and the contribution of the two different modules to the performance of the MFGAN model is investigated via ablation *** results demonstrate that the proposed model does better than state-of-the-art models in terms of recall,F1,and Area Under the Curve(AUC)metrics,which means that the MFGAN model can help banks find more fraudulent transactions and reduce fraud losses.

关键词： Credit card fraud detection imbalanced classification feature fusion generative adversarial networks anti-fraud systems

Effects of hemin and thermal stress exposure on JWA expression

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Frontiers of Medicine 2007年第1期1卷 104-108页

作者： ZHAO Ming CHEN Rui li aiping ZHOU Jianwei Department of Molecular Cell Biology and Toxicology School of Public HealthNanjing Medical UniversityNanjing 210029China

To investigate the expression of JWA after hemin and(or)thermal stress exposure,we treated K562(chronic myelogenous leukemia cells)cells with different doses of hemin and thermal stress using different exposure *** expression of JWA protein was determined by Western blot *** transcription-polymerase chain reaction was carried out to determine JWA mRNA *** promoter transcription activity analysis was performed by chloramphenicol acetyl transferase-enzyme linked immunosorbent assay(CAT-EliSA).The expression of JWA protein was significantly increased by up to(3.23±0.57)folds compared to the control in K562 cells after hemin treatment(50μM for one week),and a similar pattern was observed in the cells after treatment with thermal stress(42℃)for 2 hours[increased by(8.00±1.73)folds].The expression of JWA mRNA was also significantly elevated by up to(1.37±0.06)folds in K562 cells treated with hemin(30μM for 48 hours),and a similar regulatory pattern[increased by(1.87±0.13)folds]was observed with thermal stress exposure(42℃)for 30 ***,a combined antagonistic effect was observed in the treatment of K562 cells with hemin(30μM,48 h)followed by thermal stress(42℃,30 min).CAT-EliSA further confirmed that either hemin or thermal stress treatment could up-regulate JWA transcription activity,however,the effects could be counteracted partly by treatment with a combination of *** and thermal stress might regulate JWA expression via distinct intracellular signal transduction pathways.

关键词： JWA protein,human hemin thermal stress gene expression regulation

Calcium deficiency： where does the diagnostic criterion come from and by what is bone health influenced？

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Chinese Medical Journal 2014年第24期127卷 4161-4163页

作者： Fang aiping li Keji Department of Nutrition and Food Hygiene Peking University Health Science Center Beijing 100191 China

Dietary surveys suggest that a considerable proportion of the population fail to consume recommended amounts of calcium m both developing and developed countries. Recommended allowance for dietary calcium has attracted many controversies and there are discrepant opinions on how to meet the recommendations in the global scientific community.

关键词： calcium deficiency diagnostic criterion calcium supplementation bone health recommended dietary allowances

Role of JWA in acute promye-locytic leukemia cell differentiation and apoptosis triggered by retinoic acid,12-tetradecanoylphorbol-13- acetate and arsenic trioxide

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Chinese Science Bulletin 2002年第10期47卷 834-838页

作者： CAO Haixia XIA Wei SHEN Qun LU Hua YE Jian li aiping ZOU Changping ZHOU Jianwei School of Public Health Nanjing Medical UniversityNanjing 210029China Department of Hematology and Oncology the Second Affiliate Hospital of Nanjing Medical University Deparcment of Hematology and Oncology the First Affiliate Hospital of Nanjing Medical UniversityNanjing 210029China Department of OB/GYN Gynecologic OncologyUT-Houston Medical SchoolHoustonTX 77030-4095USA

JWA, a cytoskeleton associated gene, was primarily found to be regulated by all trans-retinoic acid (ATRA), 13 cis-retinoic acid (13 cis-RA) and 12-tetradecano-ylphorbol-13-acetate (TPA). Our previous data showed that JWA might be involved in both cellular differentiation and apoptosis induced by several chemicals. In this study, we addressed the possible mechanism of JWA in the regulation of cell differentiation and apoptosis in NB4, a human acute promyelocytic leukemia cell line. CD11b/CD33 expression and cell cycle were analyzed for detecting of cell differentiation and apoptosis. Both reverse-transcription polymerase chain reaction (RT-PCR) and Western blot assays were used for understanding the expressions of JWA. The results showed that under the indicated concentrations ATRA (10-6 mol/L) and As2O3 (10-6 mol/L) induced cell differentiation and apoptosis separately; while both 4HPR (10-6mol/L) and TPA (10-7 mol/L) showed dual-directional effects on NB4 cells, they not only trigger cells’

关键词： JWA cell differentiation apoptosis NB4 signal trans-duction.