Tsinghua University

Other

Timecho Ai Technology Co. Ltd

Canon Kabushiki Kaisha

Beijing University of Technology

Zhengzhou University

Guizhou Expressway Group Co., Ltd (cn)

Suntech UK Ltd

Crsc Research & Design Institute Group Co., Ltd.

Wang, Sumi

Wang, Jianmin

Jianmin Wang

Zhiqiang Chen

Chen Wang

Xiangdong Huang

Jiaguang Sun

Mingsheng Long

Jialin Qiao

Feng Liu

Xiaoyu Li

Pengfei Xu

Yuanfeng Zhang

Xiaojuan Gao

Xin Ji

Xiaoqin Zhang

Yu Xia

Linxi Gao

Jiangbi Hu

Ronghua Wang

Zhenxing Zhang

Guiping Guan

Tian Jiang

Jianlong Cheng

Jiechao Cheng

Sumi Wang

Lexun Xue

Weidong Pan

Guozhong Jiang

Jinrui Zhang

Jiamei Liu

Fanyong Meng

Youbing Zhang

Guozhen Zhang

Huaijiang Wang

Shanhe Zhao

Xiaona Yu

Liwei Qi

Ming Jiang

Zhicheng Zhu

Disclosed is a draw-bar box-type quickly folding micro electric vehicle, comprising of a seat frame assembly () that is horizontally arranged, the top surface of which is provided with a foldable backrest. A pair of symmetrically arranged rear wheel assemblies () are arranged at a position, close to a rear of the vehicle, on the bottom surface of the seat frame assembly (), and two vertically downward first connecting posts (), which are provided near the front of the lower end of the seat frame assembly (). A footrest assembly () is hinged to the lower ends of the two first connecting posts () through the first connecting assemblies (). The footrest assembly () is arranged parallel to the seat frame assembly (), and the plane of the footrest assembly () is lower than the plane of the seat frame assembly (). A steering column assembly () is hinged at the end of the footrest assembly () away from the seat frame assembly (), and a front wheel assembly (), with a power device, is attached at the lower end of the steering column assembly (). A very low footrest assembly () is hinged to the seta frame assembly () by means of the first connecting assembly (), so that the user does not need to raise their legs to use the vehicle. Thus, use of the vehicle is convenient and safety risks are reduced.

Draw-bar box-type quickly folding micro electric vehicle

A columnar storage method and a query method and system for time series data. The storage method includes: dividing a column of time series data into a plurality of pages, wherein each page stores a part of data points of the column of time series data and the sum of the data points stored in all the pages is all the data points in the column of time series data (S); and setting two parts, i.e., a page header and a page body, for each page, storing summary index information of all the data points in the page in the page header of the page and storing data value information of all the data points in the page in the page body of the page (S).

Columnar storage and query method and system for time series data

Provided are a capacity expansion method and a capacity expansion system based on a dual-level list structure; a first level list of the dual-level list structure is a first-level array in which at least one array identifier is stored; a second level list of the dual-level list structure includes at least one second-level array, each second-level array stores data to be stored and corresponds to only one array identifier; the method includes: creating a new first-level array when an amount of data stored in the second-level array corresponding to each array identifier reaches a maximum value, a size of a new first-level array being greater than that of a current first-level array, and increasing a number of the second-level arrays; and copying the array identifier stored in the current first-level array to the new first-level array, and replacing the current first-level array with the new first-level array.

Capacity expansion method and capacity expansion system based on dual-level list structure

Provided are a method and device for storing time series data with adaptive length encoding, including: acquiring data values corresponding to timestamps according to a sequential order of timestamps; using a ratio of storage space values required to pre-store the previous n data values to storage space values required to pre-store rule information of a preset encoding rule and encoding data according to the previous n data values as a storage gain corresponding to the time at which the n-th data value is acquired; storing the rule information of the preset encoding rule and the encoding data corresponding to a previous n&#x2212;1 data values when the storage gain corresponding to the time at which the n-th data value is acquired is less than that corresponding to the time at which the (n&#x2212;1)-th data value is acquired.

Method and device for storing time series data with adaptive length encoding

The present invention relates to a visual efficacy measuring method for objects in different light environments, which comprises: (a) setting a light environment; (b) measuring a relationship between color temperature and time; (c) a driver visually recognizing a target object; (d) resetting the light environment, and repeating the step (c); (e) processing the visual recognition information data collected by the experiments so as to establish a relationship of the visual recognition time in relation with the light environmental parameters of color temperature, color rendering index and brightness; (f) performing visual efficacy analysis according to the processing results of the visual recognition information data. The present invention also provides a color temperature standard determining method for a tunnel middle section in day time, which comprises: (a) setting a light environment; (b) measuring a relationship between color temperature and time; (c) selecting a stably distributed color temperature segment; (d) determining the color temperature standard. The method of the present invention performs visual efficacy analysis of the influence that light environment settings of illumination on a night road or in a tunnel middle section have on drivers' visual recognition activity, thereby providing a good guiding standard for reasonable and efficient setting of color temperature, color rendering index and average brightness of an illumination device.

Visual efficacy measuring method for objects in different light environments

A portable foldable electric tricycle that can be folded to form a trolley suitcase shape and a chair includes a folding frame connecting a front wheel assembly and handlebar assembly to a seat. The front wheel assembly includes an electric motor to drive the front wheel. A backrest and rear wheel assembly are hinge connected with the seat by oppositely disposed four bar linkages. A stand is hinge connected to the seat. The folding frame, front wheel assembly and handlebar assembly can be folded to a position within the seat and the stand folded to a position in which it supports the seat to define the chair configuration of the electric tricycle. The backrest and rear wheel assembly can be folded to non-extended positions in which they are disposed adjacent the seat to define the trolley suitcase configuration of the case.

Draw-bar box type portable folding electro-tricycle with folding chair function

In an image classification method, dividing an input image into blocks; obtaining block features of each block of the image; performing an evaluation of each block based on the block features thereof; obtaining image features based on the evaluations of the blocks of the image; and classifying the image based on the image features into pre-defined categories.

Method, apparatus and storage medium for image classification

Disclosed is a method for making a bioreactor comprising a foreign target gene, special selectable markers and Dunaliella Salina as host. It is prepared by the genetic transformation techniques that include introducing a foreign target gene into the cells of Dunaliella Salina and screening the transformed cells of Dunaliella Salina. The bioreactor of the present invention can be used as a safe and cheap production system for proteins of pharmaceutical interest including vaccines, especially oral products, in a large scale, because the cells of Dunaliella Salina are easy of genetic manipulation in preparation of the bioreactor, nontoxic and edible for humans and animals, and harmless to the environment.

Transgenic dunaliella salina as a bioreactor

Growing community of inventors

Beijing, China

Jianmin Wang