Shandong New Beiyang Information Technology Co., Ltd.

Shandong Computer Science Center (national Supercomputer Center in Jinan)

Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.

Jingjin Equipment Inc.

Qilu Antibiotics Pharmaceutical Co. Ltd.

Shandong New Beijang Information Technology Co., Ltd.

Xin Wang

Xiaoming Wu

Jinfeng Ding

Ming Yang

Guokai Wang

Shouzhe Li

Chuntao Wang

Kai Wang

Jian Li

Haiping Xing

Ming Gao

Shuxun Dong

Feng Gao

Xiaojie Tang

Tao Gao

Xinping Wang

Guangdong Hu

Botao Wang

Xunpeng Wang

Guozhi Liu

Mingxing Li

Yan Liang

Shaohua Deng

Chao Mu

Fazong Wu

Jinglong Fu

Yanhan Wang

Zhenya Chen

Haiyun Deng

Fei Tang

Michao Shi

Bo Qu

Fuqiang Wang

Xi Lei

Haojie Lin

Chuanshan Hou

Meiju Fan

Hongmei Xu

Hongbing Wang

Disclosed is a method for detecting a data stealthy attack on a networked system with differential privacy protection, which falls within the technical field of information security. The method includes: firstly, modeling a networked system and designing an attack detection scheme based on system noise parameters; then, designing an optimal data stealthy attack scheme for an attacker according to known system information; and then, determining a moment of adding a privacy noise through a privacy noise scheduling scheme while ensuring privacy of sensitive data on the networked system, and achieving an optimal system control performance. Based on the above design, a possible data stealthy attack may be effectively detected on the basis of protecting the system data privacy and ensuring the optimal system performance.

Method for detecting data stealthy attack on networked system with differential privacy protection

A new mutant of D-amino acid transaminase, based on supercomputing-assisted technology, belongs to the fields of computational biology, computer-aided design, and enzyme engineering technology, and specifically relates to mutants of D-amino acid transaminase obtained based on supercomputing-assisted technology and applications thereof. Compared to the wild-type enzyme, the aforementioned mutant of D-amino acid transaminase exhibits a half-life (t) of over 12 hours at 40° C., while it is only 8.8 minutes for the wild-type D-amino acid transaminase. The half-inactivation temperature (T) of the mutant is 45.3° C., approximately 5.4° C. higher than that of the wild-type D-amino acid transaminase. This substantially enhances its thermal stability, enzymatic activity, etc., effectively broadening its application fields and scope. The mutant has a wide range of industrial applications and thus holds substantial practical value.

Mutants of D-amino acid transaminase obtained based on supercomputing-assisted technology and application thereof

A back-blowing unblocking device for the dustproof screen of the dryer, a dustproof equipment, and a dryer are provided. The back-blowing unblocking device for the dustproof screen of the dryer utilizes a closed compartment space of the dryer. The back-blowing unblocking device for the dustproof screen of the dryer includes a high-pressure air main pipe, a high-pressure air horizontal pipe, high-pressure air branch pipes, a shunt connecting pipe, and back-blowing fan-shaped nozzles. A length of each high-pressure air branch pipe is equal to a length of an A-shaped dustproof screen. Both ends of the each high-pressure air branch pipe are closed and an upper center opening is welded to the shunt connecting pipe. Both sides of the each high-pressure air branch pipe are densely arranged with the back-blowing fan-shaped nozzles.

Back-blowing unblocking device for dustproof screen of dryer, dustproof equipment, and dryer

Embodiments of the present disclosure provide a ferromagnetic object detection device and a method for detecting a tubing coupling. The ferromagnetic object detection device includes a support tube, a magnetic field generating device and a magnetic detection device. The support tube includes a space penetrating in a first direction; the magnetic field generating device is located on an outer sidewall of the support tube and configured to generate a magnetic field; the magnetic field detection device includes a first magnetic field detection element, a second magnetic field detection element and a third magnetic field detection element.

Ferromagnetic object detection device and method for detecting tubing coupling

Provided are a banknote temporary storage mechanism () and a banknote processing device. The banknote temporary storage mechanism () is configured to enable the banknote to smoothly fall without getting jammed. The banknote temporary storage mechanism () includes a frame (), a first door () pivotally connected to the frame (), and a banknote pushing mechanism (). The first door () has an open position and a closed position. The banknote pushing mechanism () includes a banknote pushing member (). The banknote pushing member () is movably connected to the first door (), and protrudes from a banknote support surface of the first door (). The banknote pushing member () is configured to, as the first door () rotates towards the open position from the closed position, to move relative to the first door () along a direction in which a banknote is disengaged from the first door (), to push the banknote to be disengaged from the first door ().

Banknote temporary storage mechanism and banknote processing device

The present invention relates to a crystal of cephalosporin intermediate 7&#x3b1;-methoxy cephalothin (I) and a method for preparing same. The crystal of 7&#x3b1;-methoxy cephalothin (I) undergoes Cu-Ka radiation and X-ray powder diffraction expressed in terms of angle 2&#x3b8;; the crystal of 7&#x3b1;-methoxy cephalothin (I) has characteristic absorption peaks at positions of 7.34&#xb0;&#xb1;0.20&#xb0;, 12.71&#xb0;&#xb1;0.20&#xb0;, 14.25&#xb0;&#xb1;0.20&#xb0;, 14.68&#xb0;&#xb1;0.20&#xb0;, 16.52&#xb0;&#xb1;0.20&#xb0;, 17.99&#xb0;&#xb1;0.20&#xb0;, 19.98&#xb0;&#xb1;0.20&#xb0;, and 22.69&#xb0;&#xb1;0.20&#xb0;. The crystal of 7&#x3b1;-methoxy cephalothin provided by the present invention is easy to prepare. Related test data shows that the crystal of 7&#x3b1;-methoxy cephalothin has high purity, low impurity content, and good stability. The preparation cost is low, the preparation method is simple to operate, conditions are mild and easy to control, and crystals of 7&#x3b1;-methoxy cephalothin can be obtained stably. The invention is applicable to industrial production.

Crystal of cephalosporin intermediate 7&#x3b1;-methoxy cephalothin and method for preparing same

Disclosed are a printer and a control method thereof. The control method of the printer includes: a first positioning mark and a first printing content are printed on printing paper when printing is executed using a ribbon of a reference color; and a starting position of the first page is transmitted to a printing position of a printing head according to the first positioning mark and a printing position deviation compensation value to print the printing content of the first page in an ith printing content when printing is executed using a ribbon of an ith color. The method solves a problem of inaccurate positioning in a printer when one page on printing paper is positioned repeatedly.

Printer and control method therefor

A control method for printer, the control method includes: controlling a first group of heating units of a printing head to output first printing energy to form printing dots with a first density on a printing medium; and controlling a second group of heating units of the printing head to continue outputting second printing energy to form printing dots with a second density on the printing medium, wherein the second group of heating units consists of heating units need to implement printing energy compensation in the first group of heating units. By means of the control method, the printing densities of the printing dots corresponding to the heating units need to implement printing energy compensation are improved, and the problem of non-uniform printing density of each printing dot caused by non-uniform pressure exerted on the printing platen by the printing head can be effectively solved.

Printer and control method for printer

Disclosed are a ribbon cartridge, a thermal transfer printer, and a method for installing the ribbon cartridge. The ribbon cartridge () comprises a bracket (), a supply cylinder () arranged on the bracket and used for accommodating an unused ribbon, and a winding cylinder () arranged on the bracket and used for accommodating a used ribbon, where the supply cylinder and the winding cylinder are placed in parallel, and have an initial state in which the supply cylinder and the winding cylinder are close to each other and an open state in which the supply cylinder and the winding cylinder are away from each other under the action of an external force. Compared with a ribbon cartridge whose supply cylinder and winding cylinder are arranged at a fixed interval in the prior art, the ribbon cartridge as disclosed is more compact and needs less installation space.

Ribbon cartridge, thermal transfer printer, and method for installing ribbon cartridge

The disclosure discloses a printer and a method and device for controlling the same. The method for controlling the printer comprises: detecting the number of heating units of a currently mounted printing head; acquiring a resolution, corresponding to the detected number of the heating units, of the printing head; and setting a printer parameter according to the acquired resolution of the printing head. The problem of high error rate after the resolution of the printing head of the printer is changed is solved.

Printer and method and device for controlling same

Growing community of inventors

Shandong, China

Xin Wang