Ca, Inc.

Research Institute of Highway Ministry of Transport

Emc IP Holding Company LLC

Guangxi Communications Investment Group Co., Ltd.

Zhonglu High-tech Highway Technology (beijing) Co., Ltd.

Zhe He

Lei Li

Bo Tian

Jinde Xie

Austin Fang

Taiwen Zhang

Ying Liu

Lei Gao

Zhiqiang Li

Huan Chen

Hao Fang

Dapeng Wang

Panpan Zhang

Lihui Li

Jiliang Wang

Zhi Wen Fu

Qin Fu

Zhijie Chen

Peng Peng

Zuguang Yuan

Zhu Luo

Rongguo Hou

Hongfeng Sun

Xiuxiong Mo

Sili Li

Lei Quan

A method for rapid demolishing of a cement concrete pavement slab and a device there for. The device includes a demolishing vehicle, and the demolishing vehicle includes a base disposed at a bottom of the demolishing vehicle. The first shallow cutting allows first saws to make a minimal cut into the cement concrete pavement, increasing the cutting speed. A second deeper cutting is made on the basis of the grooves cut by the first saws, and although second saws have a larger feed, a cutting thickness of the cement concrete pavement is reduced by the first saws. A third cutting follows the same principle as the previous cuttings.

Method for rapid demolishing of cement concrete pavement slab and device thereof

Techniques manage a hash table, and a computer program product. The techniques involve: in response to receiving a write request, determining whether a first hash value associated with the write request is stored in a Haidian District set of hash tables, the set of hash tables including at least a first hash table and a second hash table, the first hash table being a currently valid hash table for the first storage device, the second hash table being stored in a second storage device, an access speed of the first storage device being faster than that of the second storage device; in response to determining that the first hash value is not stored in the set of hash tables and the first hash table is full, setting a pre-allocated third hash table in the first storage device as the currently valid hash table in the first storage device; writing a first entry into the third hash table, the first entry including the first hash value; and merging entries in the first hash table with entries in the second hash table for storage into the second storage device. With such techniques, a two-level hash table structure is built, and the hash table management efficiency is improved.

Method and device for managing hash table, and computer program product

A system divides a source computer storage device into a plurality of logical volumes, and creates a first recovery point data file and a first recovery point index file. In response to an incremental backup of a first logical volume, the system creates a second recovery point index file comprising a plurality of indices. In response to no data changing in a particular block in the first logical volume, the system points an index in the second recovery point index file to the particular block in the first logical volume. In response to data changing in the particular block in the first logical volume, the system creates a corresponding new block in a second recovery point data file. The system points the index in the second recovery point index file to the corresponding new block in the first logical volume.

System and method for merging continuous volume snapshots

An auxiliary member for pavement construction, including: a cylinder, a base plate and a leveling bolt; the cylinder includes a first cylinder part and a second cylinder part which are connected and communicated with each other, the first cylinder part is provided with a sling installing member and a slurry inlet, bottom of the second cylinder part is connected with the base plate, the base plate is provided with a bolt extending hole and multiple slurry discharging holes which are communicated with the inner cavity of the second cylinder part, the leveling bolt includes a bolt head and a screw, the screw extends through the bolt extending hole, the bolt head is arranged in the second cylinder part and the bolt head is smaller than the inner diameter of the second cylinder part. The present invention further provides a concrete slab and a method for pavement construction.

Auxiliary member for pavement construction, concrete slab and method for pavement construction

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Beijing, China

Zhe He