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Search Results: 1 - 10 of 85830 matches for " Zhu Jian-Jun "
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Novel Weight Approach for Interval Numbers Comparison Matrix in the Analytic Hierarchy Process

ZHU Jian-jun~,

系统工程理论与实践 , 2005,
Abstract: New consistency definitions and weight approach deriving from the interval numbers comparison matrix in the analytic hierarchy process are studied. First, define the local consistency and the local satisfactory consistency based on the idea of weight feasible region. Second, put forward a model to check whether the interval numbers comparison matrix has the local satisfactory consistency or not. Third, define the consistency degree to check the whole consistency and suggest a modification approach to adjust the interval numbers matrix with the bad consistency degree. Finally, a new approach for deriving weight from the interval numbers matrix is proposed. The objective is to seek a crisp matrix from the interval numbers matrix with the minimum consistency ratio. Then, the weight deriving from the crisp matrix can be regarded as the weight for the interval numbers matrix, which is solved by the particle swarm optimization. An example is given to illustrate the approach.
Predictors and clinical outcomes for spontaneous rupture of hepatocellular carcinoma
Qian Zhu,Jing Li,Jian-Jun Yan,Liang Huang
World Journal of Gastroenterology , 2012, DOI: 10.3748/wjg.v18.i48.7302
Abstract: AIM: To determine the risk factors for hepatocellular carcinoma (HCC) rupture, and report the management and long-term survival results of patients with spontaneous rupture of HCC. METHODS: Among 4209 patients with HCC who were diagnosed at Eastern Hepatobiliary Surgery Hospital from April 2002 to November 2006, 200 (4.8%) patients with ruptured HCC (case group) were studied retrospectively in term of their clinical characteristics and prognostic factors. The one-stage therapeutic approach to manage ruptured HCC consisted of initial management by conservative treatment, transarterial embolization (TACE) or hepatic resection. Results of various treatments in the case group were evaluated and compared with the control group (202 patients) without ruptured HCC during the same study period. Continuous data were expressed as mean ± SD or median (range) where appropriate and compared using the unpaired t test. Categorical variables were compared using the Chi-square test with Yates correction or the Fisher exact test where appropriate. The overall survival rate in each group was determined using the Kaplan-Meier method and a log-rank test. RESULTS: Compared with the control group, more patients in the case group had underlying diseases of hypertension (7.5% vs 3.0%, P =0.041) and liver cirrhosis (87.5% vs 56.4%, P < 0.001), tumor size >5 cm (83.0% vs 57.4%, P < 0.001), tumor protrusion from the liver surface (66.0% vs 44.6%, P < 0.001), vascular thrombus (30.5% vs 8.9%, P < 0.001) and extrahepatic invasion (36.5% vs 12.4%, P < 0.001). On multivariate logistic regression analysis, underlying diseases of hypertension (P = 0.002) and liver cirrhosis (P < 0.001), tumor size > 5 cm (P < 0.001), vascular thrombus (P = 0.002) and extrahepatic invasion (P < 0.001) were predictive for spontaneous rupture of HCC. Among the 200 patients with spontaneous rupture of HCC, 105 patients underwent hepatic resection, 33 received TACE, and 62 were managed with conservative treatment. The median survival time (MST) of all patients with spontaneous rupture of HCC was 6 mo (range, 1-72 mo), and the overall survival at 1, 3 and 5 years were 32.5%, 10% and 4%, respectively. The MST was 12 mo (range, 1-72 mo) in the surgical group, 4 mo (range, 1-30 mo) in the TACE group and 1 mo (range, 1-19 mo) in the conservative group. Ninety-eight patients in the control group underwent hepatic resection, and the MST and median disease-free survival time were 46 mo (range, 6-93 mo) and 23 mo (range, 3-39 mo) respectively, which were much longer than that of patients with spontaneous rupture of H
Research on the Mobile Electronic Delivery Platform for Iron and Steel Sales Logistics Based on 3G Netbook  [PDF]
Wei-Feng Zhu, Jian-Hua Gu, Li Ye, Zhi-Xin Shi, Shu-Rong Mei, Qiao Chen, Jian-Jun Hu
iBusiness (IB) , 2012, DOI: 10.4236/ib.2012.43035
Abstract: According to the situation of sales logistics transportation management in an iron and steel enterprise and the possible logistics risks, the architecture of mobile electronic delivery platform for iron and steel sales logistics based on 3G netbook is proposed. The delivery process based on 3G netbook is analyzed. The three-tier C/S-based platform framework is also proposed, including database server, application server and clients. The function design of the platform is given. Finally, the key technologies of the platform are discussed.
Fluorescence Quenching of Alpha-Fetoprotein by Gold Nanoparticles: Effect of Dielectric Shell on Non-Radiative Decay
Zhu Jian,Li Jian-jun,Wang A-qing,Chen Yu
Nanoscale Research Letters , 2010,
Abstract: Fluorescence quenching spectrometry was applied to study the interactions between gold colloidal nanoparticles and alpha-fetoprotein (AFP). Experimental results show that the gold nanoparticles can quench the fluorescence emission of adsorbed AFP effectively. Furthermore, the intensity of fluorescence emission peak decreases monotonously with the increasing gold nanoparticles content. A mechanism based on surface plasmon resonance–induced non-radiative decay was investigated to illuminate the effect of a dielectric shell on the fluorescence quenching ability of gold nanoparticles. The calculation results show that the increasing dielectric shell thickness may improve the monochromaticity of fluorescence quenching. However, high energy transfer efficiency can be obtained within a wide wavelength band by coating a thinner dielectric shell.
Electrical Resistivity-Based Study of Self-Sensing Properties for Shape Memory Alloy-Actuated Artificial Muscle
Jian-Jun Zhang,Yue-Hong Yin,Jian-Ying Zhu
Sensors , 2013, DOI: 10.3390/s131012958
Abstract: Shape memory alloy (SMA) has great potential to develop light and compact artificial muscle (AM) due to its muscle-like high power-to-weight ratio, flexibility and silent operation properties. In this paper, SMA self-sensing properties are explored and modeled in depth to imitate the integrated muscle-like functions of actuating and self-sensing for SMA-AM based on the investigation of SMA electrical resistivity (ER). Firstly, an ER transformation kinetics model is proposed based on the simulation of SMA differential scanning calorimetry (DSC) curves. Then a series of thermal-electrical-mechanical experiments are carried out to verify the validity of the ER model, whereby the SMA-AM self-sensing function is well established under different stress conditions. Finally the self-sensing capability is further demonstrated by its application to a novel SMA-AM-actuated active ankle-foot orthosis (AAFO).
Two-dimensional Co-Seismic Surface Displacements Field of the Chi-Chi Earthquake Inferred from SAR Image Matching
Jun Hu,Zhi-wei Li,Xiao-Li Ding,Jian-Jun Zhu
Sensors , 2008, DOI: 10.3390/s8106484
Abstract: The Mw=7.6 Chi-Chi earthquake in Taiwan occurred in 1999 over the Chelungpu fault and caused a great surface rupture and severe damage. Differential Synthetic Aperture Radar Interferometry (DInSAR) has been applied previously to study the co-seismic ground displacements. There have however been significant limitations in the studies. First, only one-dimensional displacements along the Line-of-Sight (LOS) direction have been measured. The large horizontal displacements along the Chelungpu fault are largely missing from the measurements as the fault is nearly perpendicular to the LOS direction. Second, due to severe signal decorrelation on the hangling wall of the fault, the displacements in that area are un-measurable by differential InSAR method. We estimate the co-seismic displacements in both the azimuth and range directions with the method of SAR amplitude image matching. GPS observations at the 10 GPS stations are used to correct for the orbital ramp in the amplitude matching and to create the two-dimensional (2D) co-seismic surface displacements field using the descending ERS-2 SAR image pair. The results show that the co-seismic displacements range from about -2.0 m to 0.7 m in the azimuth direction (with the positive direction pointing to the flight direction), with the footwall side of the fault moving mainly southwards and the hanging wall side northwards. The displacements in the LOS direction range from about -0.5 m to 1.0 m, with the largest displacement occuring in the northeastern part of the hanging wall (the positive direction points to the satellite from ground). Comparing the results from amplitude matching with those from DInSAR, we can see that while only a very small fraction of the LOS displacement has been recovered by the DInSAR mehtod, the azimuth displacements cannot be well detected with the DInSAR measurements as they are almost perpendicular to the LOS. Therefore, the amplitude matching method is obviously more advantageous than the DInSAR in studying the Chi-Chi earthquake. Another advantage of the method is that the displacement in the hanging wall of the fault that is un-measurable with DInSAR due to severe signal decorrelation can almost completely retrieved in this research. This makes the whole co-seismic displacements field clearly visible and the location of the rupture identifiable. Using displacements measured at 15 independent GPS stations for validation, we found that the RMS values of the differences between the two types of results were 6.9 cm and 5.7 cm respectively in the azimuth and the range directions.
Cloning and expression of F18 fimbrial operon gene clusters from enterotoxigenic Escherichia coli and their bioactivity

ZHANG Jian-jun,ZHU Guo-qiang,

微生物学报 , 2007,
Abstract: The fed operon gene clusters with each size of 5.6kb,encoding the F18ab or F18ac fimbriae,was amplified respectively by high fidelity PCR using the genomic DNA templates from F18 fimbriae E. coli strains 107/86 or 2134P. The PCR products with the restriction enzyme sites at each end were digested and then cloned into the vector pET-22b( ),the recombinant plamids with the inserts of both type of fed gene clusters were constructed and screened,further confirmed by the means of combination with restriction endonuclease analysis and sequencing. The both types of fimbriae F18ab and F18ac were expressed efficiently in the E. coli BL21(DE3) after proper concentration of IPTG induction. Expressed fimbriae were revealed and comfirmed by transmissible electromicroscope observation. The both fimbriae F18ab and F18ac were isolated and purified from the recombinant E. coli,and only a single major band of protein with size of approximately 15kDa was visualized in Coomassie blue-stained gels after SDS-PAGE. The rabbits sera with high titer of anti-F18 fimbriae were detected after being immunized with the purified F18ab or F18ac fimbriae. The results of combination of agglutination assay with Western blotting showed that the sera directed against both fimbriae F18ab and F18ac reacted positively with the F18 fimbriae from both wild E. coli 107/86 and 2134P.Small intestine epithelial cells with F18 fimbriae receptors,which were from post-weaning piglets with the genotypes of FUT1 gene both M307~ GG and M307~ AG ,were prepared and tested for the adherence of E. coli expressing F18 fimbriae under the microscopic examination. Adhesion and adhesion inhibition test showed both of the recombinant E. coli expressing F18ab or F18ac fimbriae respectively could adhere to the jejunal epithelial cells in vitro as E. coli 107/86 and 2134p did. The both of anti-sera directed against fimbriae F18ab or F18ac respectively can efficiently inhibit the fimbriae-mediated post-weaning piglet jejunal epithelial cells adherence to both the recombinant E. coli (expressing F18ab or F18ac fimbriae) and wild type E. coli (107/86 and 2134P).
Abnormal Wear Behavior of Bainite Steel under Multiple Impact Loads

ZHANG Jian-jun,ZHU Jin-hua,

摩擦学学报 , 2006,
Abstract: Using JD-125 reciprocating impact wear tester, the surface of Bainite steel is separately impacted for 40 h to observe evolution of microstructure in surface and changes of wear rate. When the impacting energy is 6 J, the wear rate kept invariability all the time, which shows an usual wear rule ; When the impacting energy is 8.0 J, the wear rate sharply decreased after impacted 10 h and was lower than that of 6.0 J, an abnormal wear phenomenon occurred. With the help of HRTEM, a lot of amorphous phase was found in surface and some nanocrystalline embed in the amorphous basis. Because of the appearance of amorphous layer, usual wear mechanism was restrained strongly and its wear rate decreased, its surface topography is more even and smooth than that of 6.0 J. Result indicates that the amorphous layer can form only when the impact energy exceeds a certain threshold.
Jian-jun LI
Management Science and Engineering , 2007,
Abstract: This paper looks at the scale of underground financing and analyzes its impact upon macroeconomic movements. After measuring the sizes of net underground financial investment, net flow of cross-border underground funds, underground money, underground loan, we judge the impact of these different underground financial indexes on economic equilibrium, growth and economic efficiency. Finally, we find a reasonable scale of underground financing and draw the conclusion that underground financing impacts and counteraction should be considered by government economic regulatory departments in setting macroeconomic policies. Key words: Underground Financing, Scale Measurement, Macroeconomic Movements
Research on Life Signals Detection Based on Higher Order Statistics
Jian-Jun Li
TELKOMNIKA : Indonesian Journal of Electrical Engineering , 2012, DOI: 10.11591/telkomnika.v10i6.1597
Abstract: The life signals are built on harmonic mode for their low frequency, quasi-periodicity, low SNR, and the easy submerged in strong clutter noise. The method for detecting life signal based on adaptive filter and high order statistics is presented, in which neither the Gaussian supposition of the observed signal, nor a prior information about the waveform and arrival time of the observed signal is necessary. The principle of method is to separate the spectrum of input signal into many narrow frequency bands, whose Sub-band signal is followed by a short-time estimation of higher-order statistics so as to suppress Gaussian noises. Simulated results show that the method can effectively detect life signals from noise with good convergence speed and stability, and greatly improve the signal quality with respect to LMS method.
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