We augment Naive Bayes models by using divide and conquer strategy to address shortcomings of the standard Naive Bayes text classifier. The result is a generalized Bayes classifier which allows for local dependence am...
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We augment Naive Bayes models by using divide and conquer strategy to address shortcomings of the standard Naive Bayes text classifier. The result is a generalized Bayes classifier which allows for local dependence among feature subset;a model we refer to as the Augmented Naive Bayes (ANB) classifier. ANB relaxes the independence assumptions of Naive Bayes while still permitting efficient inference and learning. Experimental studies on a set of natural domains show that ANB has clear advantages with respect to the generalization ability.
The present work studied the influence of glucose feeding on the ligninolytic enzyme production of Phanerochaete chrysosporium in a nitrogen-limited(C/N ratio is 56/8.8 mmol/L)*** sets of shaking flask experiments wer...
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The present work studied the influence of glucose feeding on the ligninolytic enzyme production of Phanerochaete chrysosporium in a nitrogen-limited(C/N ratio is 56/8.8 mmol/L)*** sets of shaking flask experiments were *** results showed that 2 g/L glucose feeding on the first day of the culture(24 h after the inoculation)stimulated both fungal biomass growth and enzyme *** manganese peroxidase(MnP)activ-ity was 2.5 times greater than that produced in cultures with-out glucose ***,the glucose feeding mode in fed-batch culture was also *** to cul-tures with glucose feeding every 48 h,cultures with glucose feeding of 1.5 g/L(final concentration)every 24 h produced more *** peak and total yield of MnP activity were 2.7 and 3 times greater compared to the contrast culture,respectively,and the enzyme was kept stable for 4 days with an activity of over 200 U/L.
The evolution of activated sludge settleability and its relationship to membrane fouling in a submerged mem-brane bioreactor were studied at a lab-scale equipment fed with synthetic *** was found that sludge volume in...
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The evolution of activated sludge settleability and its relationship to membrane fouling in a submerged mem-brane bioreactor were studied at a lab-scale equipment fed with synthetic *** was found that sludge volume index(SVI)gradually increased and the sludge settleability was reduced,which was caused by the propagation of filamentous *** increasing SVI,the average increasing rate of trans-membrane pressure increased,the stable filtration period was shortened,and the two stages(smooth stage and accelerating stage)of the trans-membrane pressure were more *** the same time,the increasing rate of trans-membrane pressure at the smooth stage decreased and the rate at the accelerating stage increased with SVI,*** observation by using scanning electronic microscopes showed the cake layer with loose structure and large thickness formed on the membrane surface due to the appearance of filamentous bacteria and high SVI in *** of the sludge settleability on the trans-membrane pressure was related to the structure and thickness of the cake layer on the membrane.
Mechanical alloying and preparation of Fe-substituted CoSb3-based skutterudite Co4-xFexSb12 (x≤1) were studied. All the compositions showed similar kinetics in mechanical alloying, where the skutterudite phase was ki...
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Mechanical alloying and preparation of Fe-substituted CoSb3-based skutterudite Co4-xFexSb12 (x≤1) were studied. All the compositions showed similar kinetics in mechanical alloying, where the skutterudite phase was kinetically more favorable than CoSb2 phase initially. Then the latter became the strongest phase when milling time was increased. A single phase skutterudite structure could not be obtained via mechanical alloying. Hot pressing on powders milled for 10 hours yielded mostly skutterudite phase as well as minor residual Sb impurity, and single phase skutterudite compounds were finally obtained for Co4-xFexSb12 (x≤0.65) after annealing at 650℃ for 48 hours. The maximal solubility for Fe substitution seemed to be reached at x = 0.65.
This research describes a fast detection method on the basis of enzyme-linked immunosorbent assay(ELISA)for Escherichia coli in drainage of wastewater treatment *** conditions such as the reaction format(sandwich or d...
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This research describes a fast detection method on the basis of enzyme-linked immunosorbent assay(ELISA)for Escherichia coli in drainage of wastewater treatment *** conditions such as the reaction format(sandwich or direct),the concentrations of diluted horse radish peroxidase(HRP)-*** conjugate,and anti-HPR antibody and pretreatment of *** were *** results showed that the linear range of detection for *** was 10 cfu/mL-6×10^(4) cfu/*** with conventional methods,it is a convenient and sensitive detection method with low cost.
In order to explore ways for the application of white rot fungus in dye effluent treatment under non-sterile conditions, experiment on decolorization of reactive brilliant red was carried out, employing nitrogen-limit...
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In order to explore ways for the application of white rot fungus in dye effluent treatment under non-sterile conditions, experiment on decolorization of reactive brilliant red was carried out, employing nitrogen-limited and carbon-limited medium with C/N ratio of 56/2.2 and 28/44 (in mmol/L), respectively. The results showed that the decolorization rate reached 92% while culturing white rot fungus with ni- trogen-limited medium; however, the decolorization process ended in carbon-limited medium (n(C)/n(N) = 28/44) because of bacterial contamination. In addition, pH rose up to 9.31 after 4 d of decolorization, which was caused by bacterial contamination in the carbon-limited system. Therefore, it is concluded that nitrogen-limited medium can inhibit bacterial growth to some extent while carbon-limited medium is more easily contaminated by bacteria. Nitrogen-limited medium is more suitable in culture of white rot fungus for decolorization of reactive dye. Medium with the ability of inhibiting yeast growth should be developed by adjusting other components of nitrogen-limited medium.
The microstructure and wear behaviour of the thermite reaction coating produced by the hybrid laser claddingremelting on AA7075 aluminum alloy for the systems of Al-CuO-SiO2, Al-Cr2O3-SiO2, Al-Fe2O3-SiO2, and Al-TiO2-...
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The microstructure and wear behaviour of the thermite reaction coating produced by the hybrid laser claddingremelting on AA7075 aluminum alloy for the systems of Al-CuO-SiO2, Al-Cr2O3-SiO2, Al-Fe2O3-SiO2, and Al-TiO2-SiO2 were studied. The results of the X-ray diffraction （XRD） analysis show that in all the four reaction coatings, α-Al2O3 and γ-Al2O3 phases were present at the top surface, together with various intermetallic phases, the corresponding reduced metal and Al phase in the fusion zone. Under the dry sliding condition, the wear resistance, in terms of weight loss, of the laser-clad specimens was considerably higher than that of the untreated specimen. The predominant wear mechanism of the former specimens was abrasive wear, while for the latter, it was the adhesive wear that prevailed.
Microcystins(MCs)are a group of closely related toxic cyclic heptapeptides produced by common cyanobacte-ria,which cause lots of accidents and threatens human *** this paper,an indirect competitive enzyme-linked immu-...
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Microcystins(MCs)are a group of closely related toxic cyclic heptapeptides produced by common cyanobacte-ria,which cause lots of accidents and threatens human *** this paper,an indirect competitive enzyme-linked immu-nosorbent assay(ic-ELISA)was established and used to detect microcystin-LR(MC-LR)in drinking and surface *** concentration of coating antigen was 5 mg/mL,the dilution of monoclonal antibody MC10E7 was 1:3000,the dilution of enzyme tracer(goat anti-mouse IgG-peroxidase)was 1:3000,the standard concentration of MC-LR ranged from 0.001 mg/L to 30 mg/L,and o-phenylenediamine was used as *** assay showed high relativity with high performance liquid chromatography(HPLC)with a correlation coefficient of more than 99%.The relative standard deviation was less than 10%,the detection limit was achieved down to 0.01 mg/L and up to 5.1 mg/*** quantitative detection range was from 0.03 mg/L to 3 mg/L,and the antibody had high specificity for[4-arginine]*** performed well in spite of the influence of the real samples.
Predicted particle swarm optimization is an enhanced version aiming to increase the utilization ratio of velocity information, and the performance heavily relies upon the parameters settings. According to control theo...
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Predicted particle swarm optimization is an enhanced version aiming to increase the utilization ratio of velocity information, and the performance heavily relies upon the parameters settings. According to control theory, the trajectories of position and velocity vectors of each particle can be both viewed as oscillatory links, and the relationship between inertia weight and accelerator coefficients is obtained. Thus, a self-adjusting parameter strategy is proposed. simulation results show the new proposed strategy is powerful and useful.
The necessary and sufficient condition for the existence of prewavelets with finite decomposition and finite reconstruction is presented. Especially when r = 1, we show that {φj(x-k) | 1 &le j &le r, k ∈ s} ...
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The necessary and sufficient condition for the existence of prewavelets with finite decomposition and finite reconstruction is presented. Especially when r = 1, we show that {φj(x-k) | 1 &le j &le r, k ∈ s} is shift-orthogonal if there exist prewavelets with finite decomposition and finite reconstruction, i.e., non-trivial prewavelets with finite decomposition and finite reconstruction does not exist. As an example, when r = 2 we construct a prewavelet with finite decomposition and finite reconstruction where the scale function is not shift-orthogonal, which demonstrate that there exist vector prewavelets with finite decomposition and finite reconstruction.
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