Chinese Academy of Sciences

Beihang University

Beijing Gridsum Technology Co., Ltd.

Fei Dai

Suojiang Zhang

Ruirui Zhang

Ruixia Liu

Guosheng Qi

Yongjian Huang

Junping Zhang

Guofa Yu

Xuanhong Ren

Yiqi Yan

Yuntao Jin

Shengxin Chen

An electromagnetic leakage red and black signal identification method based on information entropy characteristics includes: acquiring electromagnetic information leakage signals of an information device in an idle state and an information processing state respectively, and calculating information entropy of the electromagnetic leakage signals in the idle state and the information processing state; and calculating an information entropy change of the electromagnetic leakage signals caused by information processing, and determining whether an electromagnetic leak contains red signals when the device processes information according to the information entropy change, so as to give an electromagnetic leakage red and black signal identification result. The electromagnetic leakage red and black signal identification method is suitable for identifying electromagnetic leakage red and black signals of various types of information technology devices without the prior knowledge of specific device leakage signal characteristics or red signal templates, exhibiting great universality.

Electromagnetic leakage red and black signal identification method based on information entropy characteristics

The present invention relates to the technical field of chemical engineering and catalysis. Provided are an application of an ionic liquid in propylene glycol ether synthesis and a method for synthesizing a propylene glycol ether. The ionic liquid is a methyl carbonate ionic liquid, and is used as a catalyst for catalyzing propylene glycol ether synthesis. The method for synthesizing the propylene glycol ether comprises the following steps: placing propylene oxide and an alcohol within a reactor to contact a catalyst, and heating the mixture in an enclosed environment to 50-200&#xb0; C. to obtain the propylene glycol ether, wherein the catalyst is a methyl carbonate ionic liquid. The method for synthesizing propylene glycol ether provided in the present invention is a green synthesis technique, and does not require special production equipment. The method has simple and easily controllable processes, and can be used in industrial production and applications.

Application of ionic liquid in propylene glycol ether synthesis and method for synthesizing propylene glycol ether

The disclosure discloses a monitoring method and device for pushing effect of pushing information. The monitoring method for the pushing effect of the pushing information includes: monitoring user Identifiers (ID) accessing a target website, wherein the target website is a website which displays the pushing information; monitoring user ID accessing a preset website; and determining the pushing effect of the pushing information according to first ID and second ID, wherein the first ID are the monitored user ID accessing the target website, and the second ID are the monitored user ID accessing the preset website. By the disclosure, the problem of incapability in making a statistic about the pushing effect of the pushing information in the conventional art is solved, and the effect of quantitatively monitoring the pushing effect of the pushing information is further achieved.

Method and device for monitoring push effect of push information

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Beijing, China

Fei Dai