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Archive of Advanced Engineering Science — Volume 52 (2020), Issue 4

Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : 409
Title : Experimental Research on the Characteristics of Water Jets at the Proximal End of the Dovetail-shaped Flip Bucket
WANG Zheng, , DENG Yongting, , YANG ZhengLi, , DENG Jun,
Abstract : The experimental study investigates the takeoff characteristics of lower jet trajectory from the dovetail-shaped flip bucket under different inlet conditions. The experiment analyzes the influences of velocity and water depth on lower takeoff characteristics, especially the variation of takeoff angle of lower jet trajectory. The following items are addressed 1) relationship between takeoff angle of lower jet trajectory and inlet velocity as well as inlet water depth 2) characteristics of the tak
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : 410
Title : Research on Improvement of Collaborative Filtering Recommendation Algorithm Based on Data Sparseness
Yue X, , Tang D, , Shu H, , An Y,
Abstract : With the advent of the era of big data, the problem of information overload has become particularly serious. The recommendation system can provide personalized recommendation services for users by analyzing users' basic information and users' behavior information. How to push information accurately and efficiently has become an urgent issue in the era of big data. Based on the Alternating Least Squares (ALS) collaborative filtering recommendation algorithm, this paper reduces the loss of the inv
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : 411
Title : Study on Thermal Decomposition Mechanisms and Recovery of Sodium Sulfate from Manganese Dithionate After Carbonization
QU Bing, , KANG Luhua, , LI Yiwen, , YAN Yan, , SUN Weiyi, , SU Shijun,
Abstract : Nowadays, there is an interest in fully applying on the reaction solution, such as desulfurization by pyrolusite or leaching pyrolusite with sulfur dioxide, for the purpose of controlling air pollution and the recovery of manganese salt. However, some researchers aimed at studying on the technological problem that there was a byproduct of S2O6 2- ,which debase the main product of MnSO4 from the desulfurization solution. In the present work, a large amount of Na2SO4 was prepared by the low temper
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