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Copyright of Metal Working (1674-165X) is the property of Metal Working Editorial 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.)

Copyright of Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao is the property of Journal of Nanjing Agricultural University 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 Experimental Technology & Management is the property of Experimental Technology & Management Editorial 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.)

Copyright of Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao is the property of Journal of Nanjing Agricultural University 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.)

In view of the shortcomings of the existing image enhancement technology in detail processing and the situation that the histogram distribution of the transformed image is shifted.At the same time,it is not ideal for the basic antlion optimization algorithm (ALO),easy to fall into the local optimum and so on,This paper proposed an image enhancement method using improved antlion optimization algorithm (RBALO).It adjusted the boundary of the search space according to the distribution of the antlion location,guided the ants to search in more efficient areas.Finally,let parts of ants and the elite antlion position reorganization.It used the RBALO algorithm to determine the parameters of the Beta function,got the value of the parameter appropriate for the current image.It used two standard test functions for testing and it was proved that the improved antlion algorithm had very good precision.Finally,using couple grayscale image simulation experiments,the experimental results show that the RBALO algorithm has better fitness and more uniform histogram distribution. [ABSTRACT FROM AUTHOR]

In the application of Internet of things，the RFID tag in its life cycle w ill involve the issue of transfer of ownership，this paper put forward an improved Rabin encryption algorithm of RFID tag ownership transfer agreement. The improved protocol did not rely on the trusted third party,at the same time agreement instead of the traditional cryptographic hash function，it adopted Rabin algorithm to realize the information encryption. The challenge response mechanism，the use of the Status flags to signal the belonging of the ownership of a label the current implementation ownership transfer of security tag. The results show that the improved protocol not only meets the security requirements of tag ownership transfer，and overcomes the brute force attack safety defects existing in the original agreement，at the same time reduces the amount of calculation in the process of tag，in terms of safety and efficiency compared with the existing RFID tag ownership transfer agreement has large improvement. [ABSTRACT FROM AUTHOR]

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences 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.)

In order to solve the complicated and inconsistent problem of code obfuscation effective evaluation existed, this paper proposed a comprehensive evaluation model of code obfuscation effective based on principle component analysis ( PCA). This model improved basic PCA to dynamic self-adaptive PCA that applied to index system of code obfuscation effective. By implementing variables renaming, data encoding, control flow flatten algorithm and opaque predicates dead code inserted algorithm, meanwhile it defined comprehensive assessment value of code complexity and code obfuscated rate for model effective confirming. Experimental result shows that this model is an effective method for assessing code obfuscation. Finally, it also discussed the influence of different obfuscation algorithms and PCA weight methods on the result. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Guangdong University of Technology is the property of Journal of Guangdong University of Technology 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.)