1. According to Hou Jietai: the so-called centralization refers to subtracting the mean value of a variable from its expected value. For sample data, each observation value of a variable is subtracted from the sample average value of the variable, and the transformed variable is centralized
for your question, subtract the mean from each measurement.
2. De flow means that all social resources can be aggregated and distributed with one click
in a system with many nodes, each node has a high degree of autonomy. Nodes can connect with each other freely to form a new connection unit. Any node may become the stage center, but it does not have the mandatory central control function. The influence between nodes will form a nonlinear causal relationship through the network
This kind of open, flat and equal system phenomenon or structure is called decentralization
extended materials:
compared with the previous Internet (WEB 1.0) era, today's Internet (Web 2.0) content is no longer proced by professional websites or specific groups, but by the participation of the whole Internet users and the creation of equal power levels. Anyone can express their views on the Internet or create original content to proce information together
with the diversification of network service shape, the decentralized network model becomes more and more clear and possible. After the rise of Web2.0, the services provided by Wikipedia, Flickr, blogger and other network service providers are decentralized. Any participant can submit content, and Internet users can create or contribute content together
3. bitcoin is valuable under certain circumstances, but it is worthless under certain circumstances. Because it's not legal tender. It is impossible for any country to get the right to issue legal tender to use any
mining machine. Bitcoin is just a virtual number. While it's still possible to change money, change it quickly! It's too late to wait until it's worthless at the end.
4. Users of gotc decentralized OTC trading platform can create accounts on the platform, and users can carry out the whole process of transaction transfer on this account. Users can completely control the actual funds, so they can avoid the internal operation risk and asset embezzlement caused by human factors in the centralized trading mode.
5. Q: What is
blockchain technology? A: Blockchain technology can be understood as a public accounting mechanism. It is a technical solution rather than a specific proct. The basic idea is to establish a set of public account books on the Internet, in which all users in the network keep accounts and check accounts together, so as to ensure the authenticity and non tamperability of information. The reason why it is called "blockchain" is that the structure of blockchain storage data is composed of a chain of "storage blocks" on the network. Each block contains all the information exchange data in the network within a certain period of time, and the chain continues to grow over time. Q: What is the relationship between blockchain and bitcoin? A: Bitcoin used to be one of the most successful applications of blockchain technology. Specifically, the blockchain is a series of data blocks generated by the use of cryptography Association, and each data block contains the information of effective confirmation of multiple bitcoin network transactions. It can be said that bitcoin is a "killer application" of blockchain idea. Blockchain is the underlying technology of bitcoin, but its role is not limited to bitcoin. Q: What are the technical features of blockchain? A: Based on open source software and peer-to-peer network, blockchain can bring more advantages than traditional network in currency related fields such as transaction payment. These advantages include: decentralization, no need to trust the system, disintermediation, tamper proof, encryption security. Q: How does blockchain technology improve the authenticity and non tamperability of data? A: The newly added data blocks are linearly added to the end of the original block in chronological order, which constitutes the blockchain. In this process, the data is distributed in each computer. This decentralized storage method improves the authenticity and non tamperability of the data. When a transaction occurs, users all over the world can act as regulators. If we do not recognize the legitimacy of the transaction, the transaction cannot be concluded, and the data on the blockchain is maintained by us collectively. Q: Is there any potential defect in such a brain burning "blockchain"? A: Blockchain also has some defects to be solved, such as security risks, work efficiency and resource consumption. Since the supervision of blockchain depends on all nodes in the network, theoretically speaking, if you master more than 50% of the
computing power of the whole network, you will be able to successfully tamper with and forge blockchain data. Secondly, e to the distributed storage, each node in the blockchain needs to keep a database, and any transaction in the network needs to be authenticated and recorded by other nodes, so the efficiency of the system is low. Finally, because the operation of the blockchain relies on the computing power contributed by the network nodes, these computing power do not proce actual social value, so it is generally considered that these computing power resources are "wasted". Application of blockchain in various fields when blockchain technology is published, many people think it is possible to realize DAC. DAC (full name) can be translated into distributed autonomous system, which refers to an organization system that runs autonomously without intervention and management through a series of open and fair rules. DAC has many forms. It may be a
digital currency, a system or an entity, or even a driverless car. This kind of organization system can provide valuable services for customers in the form of currency transfer (such as bitcoin), asset transaction, domain name service, or any other business model. Therefore, through the idea of information sharing, blockchain technology is likely to bring profound changes in cost rection and security improvement to various instries. Application scenarios that existing blockchain technology can achieve: proof of existence can be used to confirm rights in the field of Internet finance, that is, blockchain can really realize "proving your mother is your mother". The smart contract guarantees the validity of the contract, such as the generation required by the electronic signature law; Reliability of methods for storing or transmitting data messages; The reliability of the method of maintaining content integrity; The reliability of the method used to identify the sender. The blockchain of the Internet of things can solve the problem of the coding standard interaction interface of the Internet of things. When an e-signature is signed by identity verification, the signature data is only under the exclusive control of the signer. Any changes to the e-signature after signing can be found, and any changes to the content and form of the data message after signing can also be found. The market forecasting community, August, is an example. Anyone can access and use August anywhere in the world, which may bring unprecedented liquidity and trading volume to the market. Asset trading NASDAQ OMX Group Inc is testing blockchain technology, which NASDAQ believes has the opportunity to transform traditional financial trading methods into bitcoin like ones. The bitcoin mode of e-commerce can be applied directly. Is it possible for e-commerce to become a "harmonious" market without supervision? Social news magmavc has invested $400000 in getgems (formerly known as gems), a start-up project for decentralized social communications applications. File storage directly impacts and even subverts the traditional cloud computing architecture. Chain, a data API blockchain API service provider, has received a $9.5 million investment led by Khosla ventures. Wall Street's financial companies are investing in blockchain and seizing the beach. Visa, NASDAQ and Citigroup also invested in chain, an old Jinshan blockchain start-up, with a financing amount of US $30 million. In the financial field, what can blockchain do? Specifically, in the financial field, in addition to providing a trading platform for bitcoin, Jiuding investment believes that blockchain technology can also greatly improve various asset trading systems other than the existing digital currency. For example, it plays an important role in the post transaction market proceres such as the liquidation and settlement of financial derivatives, foreign exchange, private equity, energy credit linked investment procts and other assets. In terms of speed, the time required for settlement audit in the U.S. securities market is 2 to 3 days. The application of blockchain technology is expected to rece the settlement audit time from hour level to minute level or even second level, thus recing the settlement risk by 99%, and recing the capital cost and system risk. In the blockchain, transaction confirmation and settlement are carried out at the same time. After the node transaction is confirmed by the system, it is automatically written into the distributed ledger, and the corresponding distributed ledgers of all other nodes are updated at the same time. The automatic operation mechanism can greatly shorten the settlement cycle. In terms of expenses, under the current settlement mechanism, in order to achieve a shorter settlement cycle, it is necessary to increase the settlement cost and initial investment expenses significantly. The emergence of blockchain technology makes it possible to rece the settlement cycle more efficiently and quickly, and rece the transaction intermediate proceres, so as to save a lot of money, which is the market space of the related blockchain instry. In terms of security, the integration of blockchain technology into smart contract technology can process complex derivatives transactions programmatically, making clearing more standardized and automated. The time linear stacking feature of the block itself can help the regulators identify and discover illegal operations. At the same time, the smart contract can change the compliance inspection into automation and minimize the possibility of violation from the beginning of liquidation. The 24-hour uninterrupted operation of blockchain technology can also make the data exchange processing of Pan state exchange more stable and reliable. In addition to securities transaction settlement, blockchain can also be used to register and issue digital asset ownership. Blockchain technology can greatly enhance program automation, while smart contract can write many complex derivatives trading terms into the registration and issuance program supported by blockchain technology. When a transaction occurs, blockchain network can quickly and correctly execute. In November 2015, LINQ, a new blockchain technology project cooperated by Nasdaq and chain, has completed the first private equity transaction using the blockchain based issuance and trading platform. The application prospect of blockchain in the field of accounting has also attracted the attention of a large number of people in the instry. Accounting, auditing and compilation cost a lot for global enterprises and the four accounting firms. Automatic accounting based on blockchain technology can greatly rece the relevant costs. The company does not need to recruit special auditors to audit the account book, and all transactions can be stored in the internal blockchain. Due to the irreversibility and time stamp function of the blockchain, the external auditors and regulators of the four major accounting firms can monitor the company's account books in real time by tracking these blockchains. At the same time, the institutions can greatly rece the dependence on the auditors to audit financial transactions and make the audit business more efficient. With the increasing maturity and application expansion of blockchain technology, blockchain start-ups in developed countries have sprung up. At present, the world's leading blockchain companies generally focus on transaction, payment, clearing, Internet of things and other pain point businesses. Some companies have achieved a certain scale, and have developed a relatively clear business model. At the same time, many companies have extended their business in the blockchain instrial chain, covering payment, transaction, risk control, etc., making full use of the multi-point coordination effect. At present, Jiuding investment is also focusing on the projects and applications of various blockchain technologies.
6. Each node of the crowd node system has a high degree of autonomy, and the nodes are free to connect with each other. Any node can have a mandatory control function in stages. The nonlinear relationship between nodes can be expanded, flattened, and equal. The phenomenon or structure of the system is called by me The cognitive structure is broken and the physical self state is relieved
7. The application progress of blockchain technology in the financial field is the fastest, especially in the field of foreign exchange. At present, foreign exchange regulatory agencies, banks, foreign exchange trading platforms and other market entities are trying to apply blockchain
taking tigerwit as an example, based on the in-depth insight into the pain points of the instry, tigerwit is currently comprehensively exploring and promoting the in-depth application of blockchain technology in the field of foreign exchange trading services, hoping that with the help of the characteristics of blockchain such as "decentralization", "information distributed storage", "whole network accounting" and "difficult to be tampered with", users can get through an "open and flexible" platform In order to solve the problem of unlocking the instry pain point effectively, the "visible" data system library is used to clarify all transaction records, historical data and other relevant information.
8. 1. Shaanxi Branch of China Construction Bank Co., Ltd.
under the leadership of the head office of China Construction Bank, China Construction Bank has experienced a historic transformation from a professional bank to a commercial bank, from small to large, from large to strong, and always adheres to the concept of "China Construction bank, building modern life"
in order to meet the needs of customers, take science and technology as the guide, actively carry out financial innovation, and earnestly fulfill the sincere commitment of serving the country, society and customers. From construction, accompanied by construction
adhere to sound management, take development as the theme, take the market as the guidance, take the customer as the center, take the structural adjustment as the main line, and constantly strengthen the market planning and expansion ability. Innovate on the basis of tradition
China Merchants Bank Xi'an Branch was established on September 9, 1996. As the Shaanxi Branch of China Merchants Bank, Xi'an Branch adheres to the business philosophy of "guiding according to the situation" and promotes the spirit of "challenge, self-examination and dedication" in China Merchants Bank
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3. Bank of China Limited Xi'an Chang'an District branch was established on September 17, 2002. Legal representative: Hu Qiang. The business scope of the company includes: Handling RMB deposit, loan and settlement business; RMB credit card business; Handle bill discount; Acting as an agent to issue financial bonds; Acting as an agent to issue, cash and sell government bonds; Collect and sell on behalf of others. Should act as an agent for insurance business
foreign exchange deposits; Foreign exchange loans; Foreign exchange remittance; Foreign exchange exchange; International settlement; Foreign exchange settlement and sale business; Handling foreign exchange transactions through superior banks; Acting for foreign credit card payment; Credit reference, consultation and witness business; Acting for open-end fund business; Accept UnionPay ID card; China Banking Regulatory Commission
Since the resumption of business in March 1979, the company has been constantly updating its business philosophy, focusing on technological service innovation, business expansion and rapid business development. There are 670 foreign-funded business outlets, accounting for 37.24% of the total number of business outlets of the four major state-owned commercial banks in the province. There are only 415 24-hour self-service banks and 345 atM1 banks in the province, covering urban and rural areas
innovate the rural withdrawal service mode of Huinong card. It has taken the lead in launching such characteristic procts as "instrial and commercial capital verification line" and "inventory pledge loan", and basically formed a financial proct and service system with complete varieties, complete functions and distinctive characteristics. A unit of relative length
Instrial and Commercial Bank of China Shaanxi Branch has steadily strengthened financial services, actively adjusted the pattern of financial services, and achieved remarkable results. First, take the lead in development and give full play to the overall advantages of ICBC
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handle RMB deposit and loan and settlement; Handle bill discount; Acting as an agent to issue financial bonds; Acting as an agent to issue, pay and sell government bonds; Agent collection and payment and insurance business; Collection and payment of funds. E fund trust scheme
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reference source:
Network -- Shaanxi Branch of China Construction Bank Co., Ltd.
Network -- Xi'an Branch of China Merchants Bank
Network -- Xi'an Chang'an Branch of Bank of China Ltd.
Network -- Agricultural Bank of China Shaanxi Branch
Network
9. Today, I will spend three minutes to teach you where to exchange foreign currency to save money
first choice: domestic banks
if the above two items are too late, they can only choose to exchange money overseas. However, at this time, we can't care where it's cost-effective, and it's not easy to compare, so let's talk about the precautions
foreign banks or ATMs
the service charge for foreign exchange at the counter or ATM of foreign banks is OK, not too high, because banks will be controlled in a reasonable range. The only thing we need to pay attention to is that foreign banks generally leave work early, so we must go early
foreign currency exchange points
these foreign currency exchange points can be found in downtown shopping malls or prosperous business districts, and the business hours are relatively long, so it is very convenient to exchange. However, the exchange rate of each store is not the same. If you have time, you can compare three stores
Hotels
some hotels can also provide exchange service, but the handling charge is generally high
Finally, let's talk about tips for changing foreign currency:
(1) just change it a week or two in advance
(2) if you go to the bank, you need to make an appointment in advance. At present, the exchange control is relatively strict. Almost all banks have no rich foreign currency, so we must make an appointment in advance
(3) it is better to pay by credit card for large amount of overseas consumption
(4) don't change too much foreign currency. According to Chinese customs regulations, each person carrying more than 20000 yuan or the equivalent of 5000 US dollars has to declare to the customs
