Five blockchains of Yangtze River Delta integration in Anhui Pro

1.

DSL is the abbreviation of digital subscriber line, which is a technology to greatly improve the digital capacity of ordinary telephone line (local loop) entering the home or office. The speed of DSL is limited by the distance between the user and the telephone office

DSL is oriented to two kinds of applications. Asymmetric DSL (ADSL) is used for Internet access which needs higher downlink speed. Symmetric DSL (SDSL, HDSL, etc.) is designed for short-range connection which needs two-way high-speed communication

DSL provides high-speed data transmission on the "last mile" of the so-called telephone network "local loop" (that is, the twisted pair copper wire line connecting home and small office users to the telephone company Central Office (CO)). With the development of Internet access, e-commerce, IP phone and video conference, the demand for high-speed access methods is also growing

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working principle of DSL

at the beginning of the design of telephone system, it was mainly used to transmit voice calls. For economic considerations, the telephone system was designed to transmit signals in the frequency range of 300Hz to 3.4khz (although people's voice can reach 15KHz, it is still very easy to identify each other in this range)

However, the copper cable from the local telephone network to the end user can actually provide a higher bandwidth, at least from the lowest frequency to 200-800khz, which depends on the circuit quality and the complexity of the equipment (it is generally believed that the less the connection to the end user's splitter, the better the bandwidth, and the environment where the line is passing by, The smaller the electronic interference, the better the line bandwidth

By using the additional frequency band of telephone line, DSL successfully overcomes the problem of transmitting a large amount of data on the audio tape (see Shannon's theorem). DSL service usually reserves the frequency band of 0.3-4khz for voice service, that is, the frequency band used by the so-called ordinary old telephone service ({Lang | en | pots}), and uses the frequency outside this range to transmit data

The DSL connection is established between the DSL modem of the user equipment and the telephone switch, and then the switch establishes a connection with the (typical) ISP that the user really wants to connect to through some other protocol. This is different from the common public telephone network and the end-to-end telephone connection. If the distance between the subscriber and the switch is more than 5.5km, the quality of service will drop sharply e to interference

2.

The integration of the Yangtze River Delta includes three provinces and one city. In fact, the integration does not have to be planned from such a large space. The integration of several metropolitan areas is the integration of the Yangtze River Delta, so it is more necessary to promote the planning of metropolitan areas in the Yangtze River Delta

innovation ecology and instrial ecology are also important driving forces for the development of metropolitan areas. Most parts of China have not formed innovation ecology and instrial ecology, with the exception of the Yangtze River Delta. The innovation ecology, instrial system, instrial chain and business environment of a metropolitan area have reached a high level. The vast number of practitioners who work in the one hour commute circle are the effective forces to cultivate and develop the modern metropolitan area

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in the high-quality integrated development of the Yangtze River Delta, adhering to the guidance of the mainstream value, building a strong spiritual pillar, building a spiritual home, and enriching and enriching the spiritual world of the masses from a higher level and a wider range are essential humanistic foundation and spiritual support. The long-term historical accumulation and rich practical refining have formed the cultural genes of Jiangnan culture, such as diligence, agility, courtesy, tenacity, respect for culture, mercantilism, openness, enterprising, delicacy and elegance, and the regional spirit of openness, innovation, wisdom and progress

the excellent cultural gene and regional spirit of Jiangnan will illuminate the direction and path of Jiangnan with its humanistic brilliance, and play a role in stimulating the spiritual power and leading the development direction of Jiangnan in the new era of high-quality integrated development

3. Since its inauguration on November 1, 2019, the Yangtze River Delta demonstration zone has witnessed new changes every day. On November 2, 16 key projects were signed and 12 projects were inaugurated. Today (April 4), the Yangtze River Delta ecological and green integration development demonstration zone has opened five regional buses at one time, all of which are inter provincial buses, some of which are completely new lines, and some of which are optimized and extended from the original lines. It is reported that the five regional buses in the Yangtze River Delta demonstration area are uniformly named "no.1-no.5 buses in the demonstration area", namely Shanghai Dongfang Lvzhou station FenHu bus passenger station, Lili tourism distribution center Dongfang Lvzhou station, Xitang ancient town Shanghai Dongfang Lvzhou station, the Fifth People's Hospital Shanghai Grand View Garden, and Lili tourism distribution center Xitang ancient town parking lot.

4. Because Shanghai municipality directly under the central government has a high level and vice national level, it is led by Shanghai

5.

On June 1, marked by the completion of the three year action plan for the integrated development of the Yangtze River Delta (2018-2020) (hereinafter referred to as the three year action plan), the task book, timetable and roadmap for the integrated development of the Yangtze River Delta have been made clear

according to the plan, by 2020, the Yangtze River Delta will basically form a world-class urban agglomeration framework, build a hub type, functional and networked infrastructure system, basically form a regional instrial system and collaborative innovation system led by innovation, and make significant progress in the construction of a green and beautiful Yangtze River Delta, The degree of regional public service supply facilitation has been significantly improved

specifically, the three-year action plan covers 12 cooperation topics, focusing on seven key areas, including transportation interconnection, energy mutual aid and protection, instrial collaborative innovation, high-speed ubiquitous information network, joint prevention and control of environmental remediation, inclusive and convenient public services, and orderly market opening, We will launch a number of special actions, take the lead in formulating a number of implementation plans, promote the implementation of a number of major projects, actively build a number of cooperation platforms, and fully promote the construction of a number of livelihood projects

the Yangtze River Delta regional cooperation office established in January 2018 focuses on strategic research, overall planning, overall coordination, supervision and inspection of regional cooperation, and promotes specific cooperation through projects. Li Qiang, Secretary of the CPC Shanghai Municipal Committee, revealed that the next step of the cooperation office should focus on the implementation of the action plan and play an active role in comprehensive coordination and supervision of implementation; In accordance with the principle of government guidance, market orientation and multi-party participation, actively guide enterprises and all sectors of society to participate in cooperation; At the same time, we should innovate ways and methods, be good at using diversified policy means and tools, and promote the development of integration in depth

6. On November 5th

2018, general secretary Xi Jinping announced at the first China International Import fair that he supported the development of regional integration in Yangtze River Delta and became a national strategy. This region, with the most active economic development, the highest degree of openness and the strongest innovation ability in China, has taken on an extraordinary national mission ever since

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construction scheme

Ying Yong said that he should continue to promote the construction of cooperation projects in the Yangtze River Delta, such as infrastructure, scientific and technological innovation, instrial collaboration, ecological environment, market system, and improve the cooperation mechanism of regional public services such as pension services, health care, human resources, and social security

Ying Yong also pointed out that we should deeply participate in the construction of the Yangtze River economic belt, actively promote the green development demonstration of Chongming Yangtze River economic belt, and speed up the construction of world-class ecological island