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Blockchain is a database

Publish: 2021-05-24 03:32:58
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,

in essence, it is 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 a batch of information of bitcoin network transactions, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

extended data

most blockchain public chains are limited by scalability. The biggest feature of blockchain technology is decentralization, which requires that all accounts in the network need to deal with the accounting process. Distributed accounting has high security, low misoperation rate, political neutrality and correctness

however, blockchain technology embraces these features at the same time, sacrificing scalability, unable to meet the personalized supervision, and slightly insufficient in protecting data privacy. Moreover, with the increase of the number of ledger, the interaction delay will increase exponentially, that is to say, the more ledger in the blockchain network, the higher the delay

2. That's ten times the survival rate he set. If you lose one, you'll get ten. It's set in the game
3. No

bitcoin trading platform has many running platforms, such as mtgox in Japan, bitcoin in China and so on
therefore, investors need to choose a reliable bitcoin trading platform. The reference factors are: 1. The longer the running time, the better; 2. The bigger the instry reputation, the better; 3. The larger the team size, the better; 4. Being able to visit<

it is suggested that China choose "fire coin net", which is cooperated by Wukou School of finance of Tsinghua University. Sequoia Capital has invested 10 million US dollars; The choice of coinbase in foreign countries is an important choice for Silicon Valley banks to invest.
4.

College Students' innovation and entrepreneurship ideas include printing and ing services, leisure errands, school leisure food stores, college students' Tutoring instry, and online stores

1. Printing and ing service

in fact, many schools have printing and ing stores. It seems that the market is saturated, but in fact, there is still a lot of space. Especially in the graation season, students have to print various reports, resumes and other information. The key to starting a business is to find the right location

5. Setting up shop on the Internet

the sales volume of health care instry on the Internet is even more considerable than that of books and music. Buying daily necessities on the Internet is often favored by people because it can avoid the curious eyes of people on the street and face the situation of salesmen

extended materials

precautions

1, risk perception

the risk perception of entrepreneurs depends on the entrepreneur's self-confidence, independent of plan, desire for control and other factors. Only those who have the courage to take risks can meet the challenges, invest their time, energy and financial resources and bear the possible losses

2. Alertness

is also called entrepreneur early warning, which is used to reflect the ability of entrepreneurs to find out whether market opportunities exist or whether they have value. When one person has insight into the value of a resource while others don't, the warning has already appeared

5.

Internet plus is an outdated word. Who is still talking about this word? p>

  1. the half hanging teacher in Colleges and universities, who couldn't find a good job in those years, was reluctant to bear hardships and went to the school to be a teacher, and then gave all kinds of advice, which is called "mistaking the children". What kind of entrepreneurship competition is also a laughing matter. All kinds of old ideas are on the table. They have no experience in social work. How can they talk about entrepreneurship? Of course, colleges and universities also have strong teachers, or academic strong, they will not talk about entrepreneurship with you. Either I have worked outside for a long time, worked as a leader, and become a teacher; Another is to realize financial freedom early. What the three groups do not do is Internet plus, because the word is out of date. p>

  2. ZF officials declined to comment

  3. < / OL >

    Why do I say this word is out of date? Go and see what is the hot field of venture capital, that is, the so-called tuyere

    1, AI, has been fried for many years. This year,

    2 is specially

    2 and share the economy. Now it is in the red sea state. It can be regarded as the Internet Plus +

    3, block chain technology

    4, lithium battery and new energy vehicle, and is beginning to mature. p>

    5. Fintech, Alibaba has long said that it is not engaged in Internet finance, but copied a foreign word, called financial technology company

    the level of judges in the entrepreneurship competition is too low. Even if college students win the championship in the competition, they are in the wrong direction

    if you want to start a business competition, you have to invite angel investors, PE, VC, at least those who have been in these companies, or else you are going to have a family

6. The way to distinguish Chongqing jinwowo analysis is as follows:
distinguish blockchain from ordinary database;, The main point is that the specific rules for putting data into the database are different. In other words, it can not conflict with other data already in the database. It is only added, immutable, and the data itself is locked to an owner (which can be owned). It is replicable and available. Finally, everyone agrees that the state of data in a decentralized database is compliant.
7. Big data refers to the data set that can not be captured, managed and processed by conventional software tools within a certain period of time. It is a massive, high growth rate and diversified information asset that needs new processing mode to have stronger decision-making power, insight and process optimization ability. 5V features of big data (proposed by IBM): Volume (large amount), velocity (high speed), variety (diversity), value (low value density), veracity (authenticity)
8.

1 Stability: insulated conctors are more stable than uninsulated conctors. Sometimes the current of uninsulated wire will be interrupted, so the insulated wire will not have this problem

2 Transmission speed: the transmission speed of different materials is different, among which the glass fiber wire and EU detection / shunt wire are the fastest, and the tin wire is the slowest

3 Rarity: tin wire or copper wire is usually used in the early stage, because these two kinds of ore are relatively easy to find. Glass fiber wires are recommended for creation mode, and gold wires or better wires are recommended for long-term survival

extended data:

high voltage conctor is a kind of ultra-high voltage transport cable with large loss. It can withstand 2048eu / T voltage. One grid loss is 1 EU / T. Close to uninsulated high voltage will cause 4 damage per second. You can build a cheap defense system

The 2x insulated gold conctor is a medium voltage transport cable with large loss. It can withstand 128eu / T voltage. 25 grid loss 1 EU / T, average loss of 0. 4EU/t Mainly used for storage box and other medium voltage power equipment

mainly used for high voltage power equipment such as advanced storage box. Synthesis of high voltage wire: 12 high voltage wires can be synthesized by placing 3 refined iron ingots side by side. You know, red stone is a very important component in my world. It can connect all kinds of wires, torches, control rods and other things needed in the game, so it is an essential thing

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