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Copyright of Journal of Soil & Water Conservation (1009-2242) is the property of Institute of Soil & Water Conservation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Chinese Institute of Food Science & Technology / Zhongguo Shipin Xuebao is the property of Journal of Chinese Institute of Food Science & Technology Periodical Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Magnetic elastomer not only has remarkable adhesion characteristics but also is a controllable magnetofriction material, which can be used in many new fields such as bionic robot hand and foot and clutch pedal. In order to investigate the frictional properties of magnetorheological elastomers, isotropic and anisotropic magnetorheological elastomers with different volume fractions were prepared by mixing, solidifying and cooling. The friction factors were measured by the ball-disc friction machine and the particle arrangement and the damage degree of the matrix were observed by environmental scanning electron microscope. The experimental results show that with the increase of the content of magnetic particles, the gap between the isotropic and anisotropic elastomers decreased, and the friction factor also decreased. In addition, the destruction degree of anisotropic elastomer matrix was more severe and the basic energy group was formed between particles, so the friction factor was lower. The anisotropic elastomer would show serious ripples in the matrix after friction and wear, which also indicated that the intensity of wear ripples and wear marks was also the reason for the variation of friction factors. [ABSTRACT FROM AUTHOR]

To deal with the class imbalance in multi-label learning, the interaction between different label sets, the information redundancy of minority classes as well as the loss of majority classes that existed in traditional multi-label resampling, this paper put forward a multi-label random balanced resampling algorithm. The algorithm proposed the random balanced resampling method to make use of minority and majority information to balance the redundancy and the loss, improved replication and deletion strategy to ensure the independence of the resampling process of different labels, and maintained the original distribution of dataset with newly proposed mean instance size. Experiment results show that the proposed methcxl is especially suit for datasets with higher imbalance ratio and achieves the best performance, 0.2 and 0.25 are the best resampling ratios in it. [ABSTRACT FROM AUTHOR]