This paper designs a Neighborhood Security System based on the ZigBee technology. Composed of user nodes, routers and central nodes, the entire system constitutes a wireless network with safe reliability and stable pe...
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This thesis focuses on issues needing attentions during the migration process in the light of ThreadX and Cortex for their own characteristics, including different physical registers corresponding to seven models, the...
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A Culture Heuristic Evolutionary Programming (CHEP) method is proposed in this paper. Method CHEP evolves both on the culture space and the population space. When this method is used to slove constrained optimization ...
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Traditional classification rule mining based on genetic algorithm usually exists the problem of low quality of the mined rules, too many redundant rules in the population after optimization, and inaccuracy in classifi...
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A novel self-adaptive differential evolution (SADE) algorithm is proposed in this paper. SADE adjusts the mutation rate F and the crossover rate CR adaptively, taking account of the different distribution of populatio...
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Structural variation (SV) has been reported to be associated with numerous diseases such as cancer. With the advent of next generation sequencing (NGS) technologies, various types of SV can be potentially identified. ...
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Current majority voting mechanism usually used in intrusion tolerant system have some limits. To solve this problem, a novel adaptive probability voting mechanism based on double threshold values is proposed. The intr...
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Polybutadiene-graft-polystyrene (PB-g-PS) latex with a weight ratio of 50/50 was used to modify cement mortar. This study examines the effects of silicon fume content and the polymer-cement ratios (P/C) on the flow, c...
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ISBN:
(纸本)9781612844589
Polybutadiene-graft-polystyrene (PB-g-PS) latex with a weight ratio of 50/50 was used to modify cement mortar. This study examines the effects of silicon fume content and the polymer-cement ratios (P/C) on the flow, compressive and flexural strength and water absorption rate of PB-g-PS latex modified cement mortar. The experimental results show that the flow of modified mortar is increased with increasing polymer-cement ratios, and it is decreased with increasing silicon fume content, PB-g-PS latex and suitable silicon fume content can markedly reduce capillary water absorption rate. PB-g-PS latex can marked influences much on the mechanical properties of modified mortars. The compressive of the polymer modified mortar decreased, and the flexural strength of a portion of polymer modified mortar increased. The suitble silicon fume can improve mechanical properties of modified mortats. The effect of PB-g-PS latex and silicon fume content on cement hydration was explored by XRD, the analysis results showed that the cement hydration was influenced by silicon fume content and P/C.
The method which road traffic volume deduces OD matrix is simple and operable to forecast one-way road traffic volume. Taking the example of Hongqi Street commerce area where traffic is very congested, the traffic org...
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The PB-g-PS latex was used to modify cement mortar, and the weight ratios of polybutadiene to styrene ranged from 70/30, 50/50 to 30/70. In the constant water-cement ratio of 0.5, and curing 24h at 20°C, RH90% ai...
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ISBN:
(纸本)9781612844589
The PB-g-PS latex was used to modify cement mortar, and the weight ratios of polybutadiene to styrene ranged from 70/30, 50/50 to 30/70. In the constant water-cement ratio of 0.5, and curing 24h at 20°C, RH90% air followed by 27d at 20°Cwater. This study examines the effects of weight ratios polybutadiene to styrene and the polymer-cement ratios on the flow, compressive and flexural strength and water absorption rate of PB-g-PS latex modified cement mortar. The experimental results show that the flow of modified mortar is increased with increasing polymer-cement ratios and decreasing weight ratios of polybutadiene to styrene, PB-g-PS latex can markedly reduce capillary water absorption rate. The minimum is 1.33Kg/m 2 . PB-g-PS latex can marked influences much on the mechanical properties of modified mortars. The compressive of the polymer modified mortar decreased, and the flexural strength of polymer modified mortar decreased as well. Overview on, PB-g-PS latex can be incorporated into cement mortars as cement modifier.
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