What is the height of blockchain

1.

blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies

blockchain is an important concept of bitcoin. It is essentially a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains the information of a bitcoin network transaction, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

some areas where blockchain can be used can be as follows:

& ᦇ 9642; Smart contract; Securities trading; E-commerce; Internet of things; Social communication; File storage; Proof of existence; Authentication

&9642; Equity crowdfunding

we can compare the development of blockchain with the development of the Internet itself. In the future, something called finance Internet will be formed on the Internet. This thing is based on blockchain, and its precursor is bitcoin, that is, traditional finance starts from private chain and instry chain (LAN), bitcoin series starts from public chain (WAN), They all express the same concept - digital asset, and finally converge to an intermediate equilibrium point

The evolution mode of

blockchain is as follows:

& 9642; Blockchain 1.0 digital currency; Blockchain 2.0 digital assets and smart contracts; Blockchain 3.0: implementation of distributed applications in various instries

2. Blockchain has the following characteristics:
decentralization. Blockchain technology does not rely on additional third-party management institutions or hardware facilities, and there is no central control. In addition to the self-contained blockchain itself, each node realizes information self verification, transmission and management through distributed accounting and storage. Decentralization is the most prominent and essential feature of blockchain

openness. Blockchain technology is based on open source. In addition to the private information of all parties involved in the transaction is encrypted, the data of blockchain is open to everyone. Anyone can query blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent

independence. Based on consensus specifications and Protocols (similar to various mathematical algorithms such as hash algorithm used by bitcoin), the whole blockchain system does not rely on other third parties, and all nodes can automatically and safely verify and exchange data in the system without any human intervention

3.

A: the basic characteristics of blockchain

I. decentralization
blockchain technology does not rely on additional third-party management institutions or hardware facilities, and there is no central control. In addition to the self-contained blockchain itself, each node realizes information self verification, transmission and management through distributed accounting and storage

Second, openness

the foundation of blockchain technology is open source. In addition to the private information of all parties involved in the transaction is encrypted, the data of blockchain is open to everyone. Anyone can query blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent

Third, independence

based on consensus specifications and Protocols (similar to various mathematical algorithms such as hash algorithm used by bitcoin), the whole blockchain system does not rely on other third parties, and all nodes can automatically and safely verify and exchange data in the system without any human intervention

Four, safety

as long as 51% of all data nodes cannot be controlled, the network data cannot be arbitrarily controlled and modified, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes

5. Anonymity

unless there are legal requirements, technically speaking, the identity information of each block node does not need to be disclosed or verified, and the information transmission can be anonymous

4.

Deflection refers to the linear displacement of the axis of the member perpendicular to the axis or the central plane of the shell perpendicular to the central plane when the force or non-uniform temperature changes

the deflection of slender body (such as beam or column) refers to the displacement of each point on its axis in the normal plane of the axis at that point. The deflection of thin plate or shell refers to the displacement of each point on the middle plane normal at this point. The rule that the deflection of each point on the object changes with position and time is called deflection function or displacement function

the deflection observation of building includes the deflection observation of building foundation, building main body and independent structure (such as independent wall and column). For high-rise buildings, when there is a large concentrated load on a small area, it may lead to the settlement of the foundation and buildings. The uneven settlement will lead to the inclination of the building, the bending of local components and the generation of cracks

extended data

1. Deflection calculation formula: ymax = 5ql ^ 4 / (384ei) (EI is the bending stiffness of beam under uniform load q)

deflection is related to load size, member section size and material physical properties of member

Deflection the linear displacement of the centroid of the cross section along the direction perpendicular to the axis ring bending deformation is called deflection γ Expression

rotation angle the angle at which the cross section turns relative to its original position ring bending deformation is called rotation angle θ Expression

The traditional bridge deflection measurement mostly uses dial indicator or displacement meter to measure directly, which is still widely used in bridge maintenance, old bridge safety assessment or new bridge acceptance