The study of switched reluctance motor for 4-DOF bearingless motor

Ye Yuan,Yukun Sun,Qianwen Xiang,Yuan Ren,Qiang Liu 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.1

High integration, low loss and high-reliability are the main development trends of flywheel battery. Thus this study presents the first prototype of a novel high-integration four degrees of freedom (4-DOF) bearingless motor with the advantages of weak coupling and low power consumption. The proposed bearingless motor can realize energy conversion and produce 4-DOF radial forces compared with the conventional bearingless motor for improving the integration of system. A biased flux for producing radial levitation forces is provided by the permanent magnets, which reduce the power consumption of the system. Moreover, a decoupling between the torque and the suspension systems is realized through a structural design, thereby improving the controllability. Structure and winding configurations are introduced and the operation principle of the 4-DOF bearingless motor is discussed. Magnetic circuits analysis and parameter design method are present and a three-dimensional finite element model is established. Electromagnetic characteristics that focus on the high integration, low loss and high reliability are discussed and validated comprehensively. Finally, a favorable controllability of radial suspension forces are verified using finite-element analysis and some experimental results.

Research on Evaluation System of Internet Venture Capital Project based on Matter - Element Method

Ye Yuan,Haigang Sheng,Haohao Shi 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.9

Drawing on experience of evaluation procedures on decision-making in the field of venture capital project, this paper establishes an evaluation procedures of telecommunications business innovation hatching project, combined with matter-element extension and other related theories. Firstly, by reviewing the evaluation index system related to innovation project and venture capital institutions, we construct the evaluation index system of Internet venture investment projects from four aspects, which are entrepreneurial team, technical/product, market and finance. Then, combining the characteristics of Internet business venture investment projects, with the project's classical field, segment field and matter element we establish the matter-element extension model of Internet venture investment project. An example is given to verify its feasibility and reasonability and the results provide a new way to assess the Internet venture capital project.

A Three-dimension Huge Data Extraction Algorithm for Visualization Based on Computational Meshes

Yuan Ye,Tian Zhongxu 보안공학연구지원센터 2015 International Journal of Database Theory and Appli Vol.8 No.3

In order to accelerate the visualization processes of huge engineering data based on computational meshes, the extraction of huge data are necessary. A data extraction algorithm of engineering visualization data based on meshes is presented. Based on ordinary four-node tetrahedron elements, ten -node tetrahedron elements, eight-node hexahedron elements, the algorithms are studied to extract and simplify data for huge engineering data visualization, which includes relationships judgment between objective points and elements and interpolation algorithm in elements. Experiments of huge data transportation are given here, which show that the algorithm is reliable, and the algorithm can be used to extract visualization data from huge data of engineering computational results.

Clinical Significance of BCR-ABL Fusion Gene Subtypes in Chronic Myelogenous and Acute Lymphoblastic Leukemias

Ye, Yuan-Xin,Zhou, Juan,Zhou, Yan-Hong,Zhou, Yi,Song, Xing-Bo,Wang, Jun,Lin, Li,Ying, Bin-Wu,Lu, Xiao-Jun Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.22

Background: Some reports have suggested that chronic myeloid leukemia (CML) patients have a higher prevalence of M-bcr than acute lymphoblastic leukemia (ALL) patients, which show a higher prevalence of m-bcr. However, the relationship between BCR-ABL subtypes and progression of CML and ALL remains unclear. Materials and Methods: 354 CML chronic phase (CML-CP) patients, 26 CML blastic phase (CML-BP) patients and 72 ALL patients before treatment with BCR-ABL positive were recruited for blood routine examination and bone marrow smear cytology. Some 80 CML-CP and 32 ALL patients after imatinib (IM) treatment were followed-up for BCR-ABL relative concentrations detected after treatment for 3, 6 and 9 months and 1 year. Results: Before treatment, CML-CP patients showed lower BCR-ABL relative concentrations with a higher proportion of M-bcr (42.7%) compared to CML-BP and ALL patients while ALL patients had a higher BCR-ABL relative concentration with high expression of m-bcr (51.4%). Patients with M-bcr demonstrated higher WBC counts than those with m-bcr and the mixed group and higher PLT counts were noted in the CML-CP and ALL groups. After imatinib (IM) treatment, patients with m-bcr showed higher BCR-ABL relative concentrations in both CML-CP and ALL groups. Conclusions: This study identified the BCR-ABL gene as an important factor in CML and ALL cases. The M-bcr subtype was associated more with CML while the m-bcr subtype was associated more with ALL. Patients with m-bcr seem to have a poorer response to IM in either CML or ALL patients compared to M-bcr patients.

Research on Mobile Internet User Behavior Preference Based on Support Vector Machine

Ye Yuan,Haigang Sheng,Haohao Shi 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.6

With the rapid development of the mobile Internet, mobile Internet users grow rapidly and the preference is more diverse, and the user's behavior is also showing a new feature. In this study, we use qualitative research and quantitative research, combined with empirical data and simulation analysis and the combination of traditional statistical analysis and modern data mining methods, to study the behavior preference of mobile Internet. Besides, we use the discrete choice model to build the binaryLogit model using SAS tools, and analyze the selected variables through data processing. Based on the significant influence factors, the behavior preference of mobile Internet users is classified by using support vector machine. The C-SVM binary classification machine is used as kernel function, and the parameters of the model and kernel function are optimized by cross validation. In this research, we introduce the support vector machine theory into the research field of the mobile Internet user behavior effectively, solve the problem of small and medium-sized samples effectively, and provide new ideas and methods for the research of mobile Internet user behavior.

A New Keystone Correction Algorithm Based on Edge-directed Interpolation of The Projector

Yuan Ye 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.6

A trapezoid is generated in screen when the projector is not perpendicular to the screen body in most situations. It is called the keystone distortion. In order to solve the keystone distortion of images, a new algorithm transforming pixel spatial position using edge preserving interpolation is proposed to implement projector keystone correction. First, the scaling factors, the start point positions and the end point positions are calculated according to different rows, then the edge preserving interpolation algorithm are used according to the space positions. Experimental results demonstrate that the algorithm can not only implement keystone correction, but also preserves the edge effectively. This algorithm can be used in the chip of projector video processing to solve the keystone distortion.

Mathematical Modeling and Control for A Single Winding Bearingless Flywheel Motor in Electric/Suspension Mode

Yuan Ye,Huang Yonghong,Xiang Qianwen,Sun Yukun 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.5

With the increase of the production of energy from renewable, it becomes important to look at techniques to store this energy. Therefore, a single winding bearingless flywheel motor (SWBFM) specially for flywheel energy storage system is introduced. For the control system of SWBFM, coupling between the torque and the suspension subsystems exists inevitably. It is necessary to build a reasonable radial force mathematical model to precisely control SWBFM. However, SWBFM has twelve independently controlled windings which leads to high-order matrix transformation and complex differential calculation in the process of mathematical modeling based on virtual displacement method. In this frame, a Maxwell tensor modeling method which is no need the detailed derivation and complex theoretical computation is present. Moreover, it possesses advantages of universality, accuracy, and directness. The fringing magnetic path is improved from straight and circular lines to elliptical line and the rationality of elliptical line is verified by virtual displacement theory according to electromagnetic torque characteristics. A correction function is taken to increase the model accuracy based on finite element analysis. Simulation and experimental results show that the control system of SWBFM with radial force mathematical model based on Maxwell tensor method is feasible and has high precision.

Association Study of Polymorphisms in Neuronal Nicotinic Acetylcholine Receptor Subunit Genes With Schizophrenia in the Han Chinese Population

Yuan-yuan Li,Rui-jie Geng,Shun-ying Yu,Guan-jun Li,Zhou-ye Wang,Hua-fang Li 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.10

Objective To investigate the relation between nicotinic acetylcholine receptor subunit (nAChR) genes and schizophrenia, and the relation between tag single nucleotide polymorphism (rs1317286, rs1044396, rs6494212, rs16969968, and rs684513) and schizophrenia in Han Chinese people. Methods The protein-protein interaction (PPI) network among nAChR protein and 350 proteins encoded by schizophrenia-related susceptibility genes was constructed through the String database to explore whether nAChR genes were associated with schizophrenia in these known databases. Then, five single nucleotide polymorphisms (SNPs) of CHRNA3 (rs1317286), CHRNA4 (rs1044396), CHRNA7 (rs6494212), and CHRNA5 (rs16969968, rs684513) were analyzed in a sample of 1,035 schizophrenic patients and 816 healthy controls. The interaction between the markers was analyzed using multifactor dimensionality reduction (MDR) software. Power analysis was performed using the Quanto program. Results There are no significant differences in genotype or allele distribution were identified between the patients and controls (p>0.05). The haplotypes constructed by four markers rs1317286, rs6494212, rs16969968, and rs684513 were not associated with schizophrenia either. However, a significant association between models made of rs1317286, rs1044396, rs6494212, and rs684513 and schizophrenia was revealed in interaction analysis (p<0.05). Conclusion The nAChR protein may have effects on the development of schizophrenia through the interaction with proteins encoded by schizophrenia-related susceptibility genes, but no relation was found between selected polymorphisms and schizophrenia in the collected Han Chinese people. However, interaction analysis suggested four-SNP model has an important effect on schizophrenia.

Prevalence and Subtypes of Blastocystis in Alpacas, Vicugna pacos in Shanxi Province, China

Ye-Ting Ma,Qing Liu,Shi-Chen Xie,Xiao-Dong Li,Yuan-Yuan Ma,Tao-Shan Li,Wen-Wei Gao,Xing-Quan Zhu 대한기생충학ㆍ열대의학회 2020 The Korean Journal of Parasitology Vol.58 No.2

Blastocystis, an enteric protist, has been reported to be an important cause of protozoal gastrointestinal manifestations in humans and animals worldwide. Animals harboring certain Blastocystis subtypes (STs) may serve as a potential source of human infection. However, information about the prevalence and genetic diversity of Blastocystis in alpacas is limited. In the present study, a total of 366 fecal samples from alpacas in Shanxi Province, northern China, were examined for Blastocystis by PCR amplification of the small subunit rRNA gene, followed by sequencing and phylogenetic analysis. The prevalence of Blastocystis in alpacas was 23.8%, and gender difference in the prevalence of Blastocystis was observed. The most predominant Blastocystis ST was ST10, followed by ST14 and ST5. The detection of ST5, a potentially zoonotic genotype, indicates that alpacas harboring ST5 could be a potential source of human infection with Blastocystis. These data provide new insight into the prevalence and genetic diversity of Blastocystis in alpacas.

Relationship between Risk Perception, Satisfaction and Behavioral Intention among Customers of Trampoline Theme Park

( Ye Yuan ),( Xiangbai Zhang ),( Zhaohui Han ),( Jingying Lin ),( Qiwei Yang ) 아시아스포츠융합과학회 2022 Asia Pacific Journal of Applied Sport Sciences Vol.3 No.2

PURPOSE The main objective of this study was to validate the structural equation model of customer risk perception, satisfaction, and behavioral intention at Shenyang trampoline theme park. METHOD Study subjects included participants at six trampoline subject parks in Shenyang City. In this study, 312 questionnaires were distributed, 31 invalid questionnaires were removed for reasons such as being incomplete or incorrect. A total of 281 questionnaires were collected and used for analyses performed using SPSS 2.4 and Amos for hypothesis testing. Collected data was analyzed by descriptive statistics, exploratory factor analysis, confirmatory factor analysis, and structural equation modeling methods. RESULT Study results found (1) risk prevention had a direct effect on revisit intention and recommendation intention, and (2) the relationship between risk prevention and behavioral intention was moderated by satisfaction. CONCLUSION These findings confirm the importance of risk prevention, satisfaction and behavioral intentions in the recreational sport industry, which relevant management organizers should focus on and make practical efforts from multiple foundational aspects such as facilities, management, funding, It is expected that this study will contribute to the development of sport leisure industry. At the same time, this study also has limitations. Firstly, the study sample was only from Shenyang City and may not be representative of the rest of China. Samples could be collected in more regions in the future to improve the validity of the model. Secondly, only satisfaction was used as a mediator, and it is suggested that other variables could be added as mediating variables through questionnaires and a SPSS analysis to better explore the relationship between risk prevention, satisfaction, and behavioral intentions.