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Research on Construction of Enterprise Informatization based on Model of Multi-agent RigidFormation
Li Sun,Ying Liu,Qiang Qu,Lilin Ma,Guang Yang,Hu Cao 보안공학연구지원센터 2014 International Journal of Grid and Distributed Comp Vol.7 No.6
Enterprise informatization is a large system including: input, output, feedback, operation inside, executive action and incentive measures. Inner-enterprise can be seemed as an artificially social organization unit composing of various agents in a rigid formation. This paper mainly proposes an enterprise informatization associated with rigid formation theory of multi-agent. The connection between agents and enterprise factors is represented. The relationship between enterprise factors is described by potential function theory: the attractive force presents that all factors have the same opinion, and the repulsive force presents that all factors have the different opinion needed to be solved. Finally, the simulation proves that the model mentioned in this paper is effective.
Adaptive CVT-Based Reduced-Order Modeling of Burgers Equation
Guang Ri Piao,Qiang Du,Hyung Chun Lee 한국산업응용수학회(구 한국산업정보응용수학회) 2009 한국산업정보응용수학회 Vol.13 No.2
In this article, we consider a weighted CVT-based reduced-order modelling for Burgers equation. Brief review of the CVT (centroidal Voronoi tessellation) approaches to reduced-order bases are provided. In CVT-reduced order modelling, we start with a snapshot set just as is done in a POD (Proper Orthogonal Decomposition)-based setting. So far, the CVT was researched with uniform density (p(y)=1) to determine the basis elements for the approximating subspaces. Here, we shall investigate the technique of CVT with nonuniform density as a procedure to determine the basis elements for the approximating subspaces. Some numerical experiments including comparison of two CVT (CVT-uniform and CVT-nonuniform)-based algorithm with numerical results obtained from FEM(finite element method) and POD-based algorithm are reported.
Life extension analysis of high speed ball bearing based on multi-parameter coupling
Guang Zeng,Chunjiang Zhao,Xiaokai Yu,Qiang Bian,Zhigang Xiao,Bingyang Liu 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.4
The internal contact nonlinear characteristics caused by the quasi-static properties of high-speed ball bearing is taken as a breakthrough point. Based on the L-P fatigue life theory, the bearing parameters and the preload load are used as the constraint variables to establish an overall bearing life extension model. Then, combined with the influence of geometric parameters on the osculation, the influence mechanism between spin-to-roll ratio and the life of the bearing are studied under the individual variation of the geometric parameters. Finally, the variation law of the bearing life, frictional heat generation and spin-to-roll ratio under the coupling changes of various parameters, and the priority of each parameter on the bearing life sensitivity, are investigated. The results show that the bearing life could be prolonged when the initial contact angle and the number of rolling elements increase but the inner and outer raceway curvature radius coefficients of the bearing and the preload force reduce. And the priority order of each parameter to bearing life sensitivity is as follows: the inner and outer raceway curvature radius coefficients shows the strongest influence on the bearing life, followed by the number of balls, and then the initial contact angle. This research provides a reliable theoretical basis for the design of high-speed ball bearings and life extension technology.
ADAPTIVE CVT-BASED REDUCED-ORDER MODELING OF BURGERS EQUATION
GUANG-RI PIAO,QIANG DU,HYUNG-CHUN LEE 한국산업응용수학회 2009 Journal of the Korean Society for Industrial and A Vol.13 No.2
In this article, we consider a weighted CVT-based reduced-order modelling for Burgers equation. Brief review of the CVT (centroidal Voronoi tessellation) approaches to reduced-order bases are provided. In CVT-reduced order modelling, we start with a snapshot set just as is done in a POD (Proper Orthogonal Decomposition)-based setting. So far, the CVT was researched with uniform density (p(y) = 1) to determine the basis elements for the approximating subspaces. Here, we shall investigate the technique of CVT with nonuniform density as a procedure to determine the basis elements for the approximating subspaces. Some numerical experiments including comparison of two CVT (CVT-uniform and CVT-nonuniform)-based algorithm with numerical results obtained from FEM(finite element method) and POD-based algorithm are reported.
MULTI-EPOCH MULTI-FREQUENCY VLBI STUDY OF THE PARSEC-SCALE JET IN THE BLAZAR 3C 66A
Zhao, Guang-Yao,Chen, Yong-Jun,Shen, Zhi-Qiang,Sudou, Hiroshi,Iguchi, Satoru American Institute of Physics 2015 The Astronomical journal Vol.149 No.2
<P>We present observational results of the &ggr;-ray blazar 3C 66A at 2.3, 8.4, and 22 GHz at four epochs during 2004–2005 with the VLBA. The resulting images show an overall core-jet structure extending roughly to the south, with two intermediate breaks occurring in the region near the core. By model-fitting to the visibility data, the northmost component, which is also the brightest, is identified as the core according to its relatively flat spectrum and its compactness. Combining our results with previous results to investigate the proper motions of the jet components, we found the kinematics of 3C 66A to be quite complicated, with components of inward and outward, subluminal and superluminal motions all detected in the radio structure. The superluminal motions indicate strong Doppler boosting exists in the jet. The apparent inward motions of the innermost components last for at least 10 years and could not be caused by newborn components. A possible reason could be non-stationarity of the core due to opacity change.</P>
A novel panel of serum miR-21/miR-155/miR-365 as a potential diagnostic biomarker for breast cancer
Ji-Guang Han,Yong-Dong Jiang,Chun-Hui Zhang,Yan-Mei Yang,Da Pang,Yan-Ni Song,Guo-Qiang Zhang 대한외과학회 2017 Annals of Surgical Treatment and Research(ASRT) Vol.92 No.2
Purpose: Insufficient sensitivity and specificity prevent the use of most existing biomarkers for early detection of breast cancer. Recently, it was reported that serum microRNAs (miRNAs) may be potential biomarkers in many cancer diseases. In this study, we investigated whether serum levels of 5 miRNAs including miR-21, miR-125b, miR-145, miR-155, and miR-365 could discriminate breast cancer patients and healthy controls. Methods: Serum levels of miRNAs were measured by using quantitative real-time polymerase chain reaction in 99 breast cancer patients and 21 healthy controls. The abundance change of serum miRNAs were also evaluated following surgical resection in 20 breast cancer patients. Receiver operating characteristic (ROC) curve analysis was performed to assess the sensitivity and specificity of miRNAs as diagnostic biomarkers. Results: Serum levels of miR-21 and miR-155 was significantly higher, while miR-365 was significantly lower in breast cancer as compared with healthy controls. The serum levels of miR-21 and miR-155 significantly decreased following surgical resection. Additionally, the serum level of miR-155 at stages I and II was significantly higher compared to stage III. The serum miR-145 level was remarkably higher in progesterone receptor (PR)-positive patients than PR-negative. The positivity of miR-21, miR-155, and miR-365 was high compared to CA 153 and CEA in breast cancer. ROC curve analyses of a combination of miR-21, miR-155, and miR-365 yielded much higher area under curve and enhanced sensitivity and specificity in comparison to each miRNA alone. Conclusion: The combination of serum miR-21/miR-155/miR-365 may potentially serve as a sensitive and specific biomarker that enables differentiation of breast cancer from healthy controls.
Tan, Zhi-Qiang,Liu, Jing-Fu,Guo, Xiao-Ru,Yin, Yong-Guang,Byeon, Seul Kee,Moon, Myeong Hee,Jiang, Gui-Bin American Chemical Society 2015 ANALYTICAL CHEMISTRY - Vol.87 No.16
<P>The intertransformation of silver nanoparticles (AgNPs) and ionic silver (Ag(I)) in the environment determines their transport, uptake, and toxicity, demanding methods to simultaneously separate and quantify AgNPs and Ag(I). For the first time, hollow fiber flow field-flow fractionation (HF5) and minicolumn concentration were on-line coupled together with multiple detectors (including UV–vis spectrometry, dynamic light scattering, and inductively coupled plasma mass spectrometry) for full spectrum separation, characterization, and quantification of various Ag(I) species (<I>i.e</I>., free Ag(I), weak and strong Ag(I) complexes) and differently sized AgNPs. While HF5 was employed for filtration and fractionation of AgNPs (>2 nm), the minicolumn packed with Amberlite IR120 resin functioned to trap free Ag(I) or weak Ag(I) complexes coming from the radial flow of HF5 together with the strong Ag(I) complexes and tiny AgNPs (<2 nm), which were further discriminated in a second run of focusing by oxidizing >90% of tiny AgNPs to free Ag(I) and trapped in the minicolumn. The excellent performance was verified by the good agreement of the characterization results of AgNPs determined by this method with that by transmission electron microscopy, and the satisfactory recoveries (70.7–108%) for seven Ag species, including Ag(I), the adduct of Ag(I) and cysteine, and five AgNPs with nominal diameters of 1.4 nm, 10 nm, 20 nm, 40 nm, and 60 nm in surface water samples.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancham/2015/ancham.2015.87.issue-16/acs.analchem.5b01827/production/images/medium/ac-2015-01827q_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ac5b01827'>ACS Electronic Supporting Info</A></P>
Aberrant Expression of CCAT1 Regulated by c-Myc Predicts the Prognosis of Hepatocellular Carcinoma
Zhu, Hua-Qiang,Zhou, Xu,Chang, Hong,Li, Hong-Guang,Liu, Fang-Feng,Ma, Chao-Qun,Lu, Jun Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.13
Background: CCAT1 has been reported to be linked with pathogenesis of malignancies including colon cancer and gastric cancer. However, the regulatory effect of CCAT1 in hepatocellular carcinoma (HCC) remains unclear. The purpose of this research was to identify any role of CCAT1 in the progression of HCC. Materials and Methods: Real time-PCR was performed to test the relative expression of CCAT1 in HCC tissues. A computation screen of CCAT1 promoter was conducted to search for transcription-factor-binding sites. The association of c-Myc with CCAT1 promoter in vivo was tested by Pearson correlation analysis and chromatin immunoprecipitation assay. Additionally, Kaplan-Meier analysis and Cox proportional hazards analyses were performed. Results: c-Myc directly binds to the E-box element in the promoter region of CCAT, and when ectopically expressed increases promoter activity and expression of CCAT1. Moreover, Kaplan-Meier analysis demonstrated that the patients with low expression of CCAT1 demonstrated better overall and relapse-free survival compared with the high expression group. Cox proportional hazards analyses showed that CCAT1 expression was an independent prognostic factor for HCC patients. Conclusions: The findings demonstrated CCAT1, acting as a potential biomarker in predicting the prognosis of HCC, is regulated by c-Myc.