Vision china

　　Bitcoin’s myth of making money has ignited a brain-burning technology-blockchain. A virtual currency with the highest price soaring to 19,850 US dollars (December 2017) has formed a fiery currency circle by itself. There are even people who fish in troubled waters under the guise of blockchain, write a white paper, issue a set of tokens, and then let the media create momentum. After hanging in the exchange for a few days, they can raise 10 million yuan.

　　Since 2018, the financial systems of various countries have stopped or boycotted all kinds of token issuance financing activities, and blockchain technology has been cold. After a year, the blockchain is on fire again, not only in the currency circle, but also in the application of blockchain in various industries. Recently, some media reported that there is still chaos in the currency circle under the blockchain boom, and the operation of clamoring that "double 11" can be 100 times richer is actually illegal fund-raising.

　　The blockchain is on fire, and there are various rumors about it.

　　Blockchain equals Bitcoin?

　　Bitcoin and blockchain are more like the relationship between chicken and egg.

　　On November 1, 2008, a post appeared in a cryptographic mailing list: "I am developing a new electronic cash system, which is completely peer-to-peer and does not require any third party’s intervention." Signed Satoshi Nakamoto.

　　What followed was the first block in the blockchain, known as the creation block. Except the Chuangshi block has a unique ID number, each subsequent block contains two ID numbers, one is the ID number of the block itself, and the other is the ID number of the preceding block.

　　It can be said that Bitcoin is the first application of blockchain technology, and blockchain technology is also derived from Bitcoin, but the two are not equal. In other words, bitcoin and blockchain are more like the relationship between chicken and egg. It is hard to tell whether there is chicken or egg first. What is certain is that the blockchain technology bred from bitcoin has undergone many formal changes in the development process, and it has been innovated according to different application fields.

　　"Bitcoin is a representative application of the blockchain public chain. It is a blockchain that anyone in the world can enter the system at any time to read data, send confirmable transactions and compete for accounting." Chen Shanhua, technical director of Beijing Siyuan Zhengtong Technology Group, introduced that Ethereum and Super Account Book introduced smart contracts into the blockchain, and stipulated the trading behavior between me and you by contract. It can be said that smart contracts have opened a new field of blockchain world applications. And the platform provides a complete development description for the encapsulation of the underlying protocol, which lowers the application threshold of blockchain technology and promotes the application of blockchain technology in various industries.

　　Blockchain is a chain?

　　There are many forms of variation, and a cross-chain mechanism can be formed within the chain.

　　If the Internet is more than just a network, then the blockchain must be more than just a chain.

　　Cross-chain mechanism can be formed in blockchain, and it is gradually becoming mature and applicable. Cross-chain simply means that information goes from one chain to another, which is a bit like information going from one intranet to another.

　　Different modules of a distributed application may be deployed in different chains, so how can it call modules in other chains and how can different modules interact with each other? Chen Shanhua explained, for example, in the field of government affairs, data can be isolated by building account books such as directory chain, license chain and business necklace, and public data and private data can be isolated, thus ensuring data protection.

　　From bitcoin to Ethereum, to super ledger, from public chain to alliance chain to private chain, there are many forms of blockchain in different dimensions, and with the application in many fields, blockchain will increasingly become an important infrastructure used in the industry, far beyond the fields of cryptocurrency and financial services.

　　Blockchain will expose private data?

　　The use of combined encryption technology has not been cracked yet.

　　"The data that’ runs’ on the blockchain is encrypted before it is uploaded, so it will not cause the disclosure of private data." Chen Shanhua introduced that the combination of blockchain and asymmetric encryption algorithm, based on the anonymity of blockchain and other capabilities, further maintains the ownership and use rights of data in blockchain. Users can encrypt their private information with personal public key, and the private key is owned by the users themselves. Only the users can decrypt the encrypted information, and both users use each other’s public key for data sharing and transmission, so as to realize point-to-point data sharing security. In the choice of algorithm, the blockchain usually uses the international standard ECC and the Chinese standard SM2. Theoretically speaking, it is very difficult to decrypt this matter itself, and it is almost impossible to do it. Moreover, the blockchain adopts one person and one secret, and the risk of data leakage and cracking is smaller.

　　It is reported that since the birth of Bitcoin, the information carried by the blockchain itself has never been intercepted by hackers, and the problems arising are all foreign aid problems such as exchanges. In fact, the security problem of blockchain technology lies in the fact that there may be undiscovered loopholes in its open source code, which may be exploited by hackers.

　　Hackers’ attacks on blockchain technology can occur at six different levels: application layer, contract layer, incentive layer and data layer. The 360 security team conducted a security test on a public chain and exchange, and the team found 42 vulnerabilities, including 29 high-risk vulnerabilities that could affect the security of user accounts. Weibo Wang, Information Security Department of 360 Group, said, "By analyzing some security incidents and taking blockchain attacks as the starting point, we can deeply analyze the hacker’s attack methods and do a good job of security protection against different attacks."

　　Is the information in the blockchain correct?

　　To ensure the authenticity of the data in the chain, a supporting system is needed.

　　Blockchain cannot be tampered with. If someone moves the data in a certain node (for example, Zhang San originally transferred one bitcoin to Li Si, but Zhang San gave Li Si two), then the timestamp is wrong, and this node is no longer the original node, and it will be identified. There are still a large number of copies in the blockchain network. If false data is found, it will be repaired, so all information on the blockchain cannot be tampered with.

　　But does it mean that the information is correct if it can’t be tampered with? Blockchain can only restrict the information in the virtual world, but it can’t interfere with the authenticity of the actual data on the chain. Kai Wei, deputy director of the Institute of Cloud Computing and Big Data of China Information and Communication Research Institute, said that the connection between the data on the blockchain and the real data is a prominent problem. Every industry has its own pain points when using blockchain. For example, in the traceability industry, how to ensure that the data on the chain corresponds to the traced products one by one without being "replaced"?

　　Whether the information written on the chain is true or not can accurately reflect the reality, which cannot be solved by blockchain technology and must be guaranteed by means outside the chain. Kai Wei believes that the construction of supporting systems is needed to ensure the authenticity of data in the blockchain.

　　Can blockchain completely eliminate fraudulent activities?

　　"Air coin" has always existed, and technical means are difficult to break the human nature problem.

　　Recently, a report entitled "Investigation on Currency Circle Chaos under the Blockchain Boom of Claiming" double 11 to Get Rich 100 Times "investigated the resurgent" air currency ":Take Biki Virtual Currency Exchange as an example, relying on a model similar to Pinduoduo, it launched" air currency "and" attracting people "crazily, focused on sinking the market, and launched more than 150 kinds of virtual currency. Biki’s coin projects are basically "air coins" with no underlying technical team and no practical value, and the so-called white paper is full of loopholes. But there are too many people who want to get rich overnight-"We also know that we may be cheated, but we may make a wave just by holding the psychology of who runs fast."

　　It is difficult to solve the problem of human nature by technology, and whether fraudulent activities disappear depends on whether people’s greed is reasonably controlled. On the contrary, the emergence of virtual currency has made criminal activities have new channels and turned into areas that are more difficult to detect and control.

　　In April 2018, there was a coin circle incident in which a line of code evaporated by 6.4 billion yuan. Just because the hacker found a code loophole, all the market value of the blockchain products related to it was instantly transferred out, approaching zero.

　　In addition to the theft of economic benefits, the channels and methods of using bitcoin to pay and money laundering are also varied. "The participation of Bitcoin (most of the encrypted digital currency recognized by the black market is Bitcoin) may make the police’s method of solving crimes by pursuing the capital chain invalid." Natalie of Shandong Police College once said that in his work, he felt that the case was not easy to investigate, and it was much more difficult to trace the criminals. (Reporter Zhang Jiaxing)

　　With regard to cultural heritage, we often pay attention to how to balance the relationship between protection, inheritance and utilization.

　　At present, the contradiction between the protection, inheritance and utilization of cultural heritage that we generally encounter is not the contradiction between the development and change of things themselves, but the contradiction between external forces, such as the cultural relics protection department and the tourism development department. Fundamentally speaking, it is caused by each side looking at things from its own perspective, amplifying its own value and simply denying the other’s value.

　　In fact, the protection, inheritance and utilization of cultural resources are mutually embedded, mutually achieved and mutually balanced. Without good protection, let alone inheritance, there is no good inheritance, and there is no rational use. At the same time, inheritance is the goal of protection, and utilization is the embodiment of contemporary value. Ignoring the blind development of protection and inheritance will inevitably lead to the disaster of cultural fault. If thinking is solidified for protection and protection, it will only fall into the quagmire of complacency. On the basis of protection, cultural research and context arrangement can not directly bring cultural commercial value, but it is a stage and process that must be experienced.

　　In the process of protection, inheritance and utilization of traditional cultural resources, it is the key to solve the problem that we can’t turn a deaf ear to what is going on outside the window, and each family should sweep the snow in front of the door to achieve win-win and symbiosis. There is a building method called tenon-mortise structure in the field of ancient buildings and furniture in China. The two wooden structures are connected by a combination of concave and convex parts, without nails, but they can be tightly fastened to achieve a "seamless" degree. When dealing with the relationship between the protection, inheritance and utilization of cultural heritage, we may learn from the wisdom of tenon-mortise structure.

　　One is to embed each other without losing the ontology. Each side has its own main body, and the concave and convex parts are used to embed and connect with the other side, instead of simply catering to the other side. The second is mutual achievement. Each party is a basic unit, but together they have created beautiful ancient buildings and classical furniture, realizing the overall value amplification. The third is mutual checks and balances. In the tenon-mortise structure, the other party is not allowed to be offside, lose principle, check and balance each other and supervise each other. If we can achieve this "seamless", it will greatly benefit the protection, inheritance and utilization of cultural heritage.

Welcome to the Autohome Tianjin Promotion Channel, bringing you the latest and exciting news. Currently, high-profile cars are running an attractive promotion in the Tianjin area. According to official information, car buyers can enjoy a cash discount of up to 30,000 yuan, which brings the minimum starting price of this luxury model down to only 199,800 yuan. This offer is an excellent opportunity not to be missed. If you are interested in Hongqi EH7, be sure to click "Check Car Price" in the quotation form to lock in this rare car purchase benefit and strive for higher discounts.

As a high-end Hongqi EH7, its side line design is elegant and smooth, highlighting the perfect combination of luxury and power. The body size of this sedan has reached 4980mm*1915mm*1490mm, and the wheelbase has reached 3000mm, ensuring a spacious and comfortable interior space. The front and rear wheelbases are 1645mm and 1655mm respectively, providing good driving stability. The tire size is 245/50 R18, whether it is city driving or long-distance driving, it can provide excellent grip and quiet experience. The combination of tires and rims undoubtedly enhances the appearance of the vehicle and adds more confidence and dignity to the driver.

As a luxury business vehicle, the interior design of the Hongqi EH7 is exquisite and attention to detail. The elegant leather steering wheel is handcrafted to provide a good grip and a sense of modern technology. It supports manual up and down + front and rear adjustment, which is convenient for the driver to operate. The 15.5-inch large central control screen is suspended in the center, showing the luxury of technology. It not only has multimedia system, navigation and phone functions, but also is equipped with automatic speech recognition control to make operation more convenient.

In terms of seats, imitation leather and leather/fur materials are mixed and matched for a comfortable sitting and high texture. The main driver’s seat has 4-way adjustment of 4 forward and rear, backrest adjustment and waist support, providing an excellent riding experience. The passenger seat also supports front and rear adjustment and height adjustment to meet the needs of different passengers. The front seat is also equipped with heating and ventilation functions and headrest speakers to enhance the comfort of drivers and passengers. In addition, the driver’s seat is also equipped with a power seat memory function, which is convenient for daily drivers to personalize.

The interior design of the Hongqi EH7 fully reflects the luxury DNA of the Hongqi brand, emphasizing functionality and comfort, and aims to create a noble and practical driving environment.

To sum up, the comments of Autohome owners have injected a unique charm into the Hongqi EH7. He said that although the logo is slightly lacking in design, the overall appearance of the EH7 and the identity of new energy have undoubtedly attracted many eyes. In actual driving, the excellent appearance and unique temperament of the car have won the admiration of the people around it and become a hot topic in the streets. It can be said that the Hongqi EH7 is not only a car, but also a perfect interpretation of the fusion of new luxury and technology, which deserves the exploration and expectation of more owners.

　　The picture shows the first poster of "Net Mark" and "Leaves on Jinshan". Information picture

　　On the occasion of the centenary of the establishment of the Communist Youth League in China, the "Webmark Film" No.003 "In the Name of Youth" was launched. Information picture

　　 　With a folk music playing, the seal engraved with the words "network audio-visual" is now on the vermilion background. This 5-second "logo" will become the same opening scenery when online dramas, online mini-dramas, online movies, online cartoons and other domestic key online dramas are broadcast online. Since June 1st this year, the State Administration of Radio and Television has implemented a licensing system for the distribution of domestic online dramas, which means that the "licensing era" of more standardized and stricter online audiovisual has arrived.

　　 　In recent years, the influence of the online audio-visual industry has been increasingly prominent. While online dramas have brought colorful content, rich and diverse aesthetic pursuits and positive value guidance to the audience, industry chaos such as nonstandard program production and broadcasting, vulgar and vulgar content, piracy and plagiarism still occur from time to time, and the call for "the same standard online and offline" and "the development of online dramas to quality products" has always existed. With the development of the online audiovisual industry, the relevant state departments are constantly formulating, adjusting and optimizing the management system and auditing standards for online audiovisual works, so as to promote the benign development of the industry and the fine creation of online dramas from top to bottom. The online issuance license for online dramas is a new milestone in this process. The establishment of the "Webmark" system will promote the producers of online platform programs to have a stronger sense of quality production, a stronger sense of social responsibility and a stronger sense of cultural mission, and make cyberspace have a better ecology and a stronger cultural atmosphere.

　　The New Deal took effect, and the works of "net signs" were born everywhere.

　　 　In May, after the State Administration of Radio, Film and Television (SARFT) issued the "Webmark" trial operation and obtained good social feedback, the "Network Drama Distribution License" began to be issued in various provinces one after another on June 1.

　　 　Looking back at the initial stage of the development of the network audio-visual industry, the management mode of self-examination and self-broadcasting system exposed many problems. Many online dramas earn gimmicks and traffic by playing "edge ball". Shanzhai, rubbing heat, rubbing IP, and even shoddy work are endless, and some works with empty content and mental calcium deficiency have brought adverse effects to society. However, judging from the works that have recently obtained the "Network Drama Distribution License", both the policy supervision and the industry creation trend are encouraging the production of fine content, and the trend of fine creation is becoming more and more obvious.

　　 　The work that won the "Net Mark No.1" in Shandong Province is the key online movie "Broken Card Storm" with public security theme directed by Shandong Radio and Television Bureau. Li Guangchang, director of the Network Audio-visual Program Management Office of Shandong Radio and Television Bureau, said: "This online movie combines the current situation of the country’s anti-network telecom fraud. At the same time, the online movie is a work that spreads positive energy and promotes the main theme, so it obtained the license number 001." Shaanxi Radio and Television Bureau issued licenses to the online movies Moon is Full, Secretary online celebrity and the online drama Sticky Club. Among them, "Moon Circle" is the first online movie in Shaanxi Province that won the "net mark". By telling the story of the old artist Qin Baogen and his little grandson, it promoted the unyielding non-genetic inheritance spirit of the shadow puppeteer. On the same day, the online drama "Xing Han Brilliant" obtained the license issued by Shanghai Radio and Television Bureau, numbered "(Shanghai) Online Drama Shenzi (2022) No.001".

　　 　You Haiyang, director of the Radio, Television and Internet Audio-visual Program Management Office of Shanghai Radio and Television Bureau, said: "We actively support the inclusion of online film and television works in administrative examination and approval, and earnestly do a good job in unifying online and offline standards. ‘ Logo ’ The introduction of the policy is in line with the development of online film and television content. Whether it is to improve quality or strengthen management, this policy is needed. "

　　 　With the change of content supervision mode, the strengthening of supervision, and the transformation, adjustment and exploration and upgrading of the industry itself, the network audio-visual field has gradually achieved a leap from "barbaric growth" to "virtuous circle". Different from the previous enthusiasm and advocacy of "data-only theory" and "market-only theory", today’s online audio-visual works have embarked on a rational stage of discussing "heroes" with quality, taste and taste: innovative perspective incision, refined production level, internal social value and ideological connotation have become important evaluation criteria. Under this change, a number of outstanding works have appeared one after another, such as Action to Break the Ice, The Longest Day In Chang’an’s Blood Without a Name, Agreement, On the Field of Hope, Sailing: When the Wind Rises, Our New Life, Flash China and Climbing the Tree with Donkeys. These works strive to present the changes of the times, reflect the real life, describe the human world, express the taste of life, and convey the human nature.

　　A stone stirs up a thousand waves, and the industry has more confidence in quality creation.

　　 　From long video to short video, from drama to micro-short drama, online audio-visual content is making great efforts, trying to achieve high-quality development of content and industrial innovation and upgrading with new content narration and new expression patterns. The launch of "Network Drama Distribution License" not only expresses the recognition and affirmation of the ingenuity of the vast number of network audio-visual practitioners for many years, but also puts forward higher requirements for the self-regulation awareness and quality creation awareness of network culture practitioners.

　　 　After experiencing the "painful period" of the development of online dramas, many creators have now jumped out of the suspension of "little joys and sorrows around them", abandoned the impetuous creation of following the trend, took root at the grassroots level, sought the source from the fiery real life and advanced culture, and strived to write the classics of the new era. The first online drama Duet, which won the License for the Distribution of Online Drama, focuses on reality and tells the story of young policemen working together to explore cases, fighting against evil forces and restoring people’s purity and peace. Its ideological height, artistic quality and production level are high. As the first "Webmark", "Leaves on Jinshan" focuses on Huangdu Village, Xilong Township, Anji County, Zhejiang Province, and donates "Baiye No.1" tea seedlings to three provinces and five counties across the country, realizing the true story of common prosperity, releasing a distinctive flavor of the times, with lively narrative rhythm and remarkable comedy effect. On the occasion of the centenary of the establishment of the Communist Youth League in China, the "Webmark Film" No.003 "In the Name of Youth" was launched, telling five youth stories spanning a hundred years, leading the audience to look back on the lush years that were burning with passion, and setting off a wave of praise for "Chinese youth" on the whole network.

　　 　“‘ Logo ’ It is the industrialization standard and value standard of online audio-visual products, which can make the quality of online film and television works more secure and avoid some shoddy products. " Tian Yu, one of the producers of the online movie "In the Name of Youth", said, "‘ Logo ’ Does not mean stress, in ‘ Logo ’ Before it appeared, the creative market was originally a situation of survival of the fittest. Only excellent and high-quality products can survive in the market. The quality of the audience can be seen at a glance, and the pressure has always existed. "

　　 　Shi Xuexian, the producer of Leaves on the Jinshan Mountain and the general manager of Hangzhou Jingcai Culture Media Co., Ltd., shared his views. "The implementation of the online drama distribution license system is a milestone. The online movie Leaves on the Jinshan Mountain can be a witness and participant in this historical moment, with a glorious mission and great responsibility. We will continue to go deep into life, take root in the people and create more outstanding works worthy of the times and the people. "

　　 　With the rapid development of mobile Internet, the rapid popularization of smart terminals and the wide application of mobile 5G technology, online audio-visual works have become an indispensable part of people’s spiritual and cultural life, and also become an important way to spread the story of China and show the national spirit and the spirit of the times in the new era. From the perspective of the whole network audio-visual industry, under the impetus of "holding a certificate", online dramas will better play the role of inheriting culture and spreading to the outside world. More network audio-visual products will go overseas, so that China’s story will be "out of the circle", showing the world a credible, lovely and respectable image of China and highlighting the cultural soft power of the Chinese nation.

　　The curtain has been opened, and online dramas are moving towards the future with high-quality development.

　　 　Standing in the new historical development stage and facing the greater expectations of the people, the network audio-visual industry needs to open up a new situation of creation in a higher standard. From this point of view, the new regulation of replacing the "record number" with "license" not only further promotes the iterative upgrade of network audio-visual from the management level, but also reflects the progress of the industry from the side and responds to the call of the people.

　　 　In fact, regardless of webcasting or TV broadcasting, the communication platforms are indeed different, but the requirement for content quality is a permanent law. From "the same standard and the same scale" of online audio-visual programs and radio and television programs to the introduction of the "license" system, the online audio-visual field is gradually establishing higher industry standards, constantly improving its specialization and standardization level, and promoting the creation of fine products.

　　 　"In recent years, the breadth, intensity and accuracy of supervision in the field of online audiovisual have been continuously strengthened, and the same orientation, standard and scale have been continuously emphasized online and offline, which has played a powerful role in regulating and supporting all aspects of the production, production and dissemination of online audiovisual content." Zhu Chuanxin, a researcher at the Institute of Network Audiovisual Research of Communication University of China, said, "The issuance of the License for the Distribution of Network Drama is another solid measure to secure the network audiovisual industry. The licensing system is conducive to catalyzing more online audio-visual content to upgrade along the track of standardization, scale and industrialization, and is of great significance to optimizing the industrial structure of online dramas, improving the level of online audio-visual production, and building a comprehensive network management system. "

　　 　The launch of "Network Drama Distribution License" has clarified the direction of the next stage of network audio-visual content. Lv Fan, deputy director of Peking University Television Research Center, said: "The new policy environment has put forward higher requirements for online literary and artistic creation, and it is even more necessary for creators to adhere to the people-centered value orientation, focus on the epic great practice of the new era, establish a biography for the times, and be famous for the times. With more masterpieces that profoundly reflect the changes of the times and depict the people’s spiritual map, the online film and television garden will be more colorful and full of business." At present, network audio-visual has become an indispensable part of people’s spiritual and cultural life and an important part of the strategy of strengthening the country through culture. The creation of online audio-visual content should continue to give full play to the advantages of online dramas and achieve high-quality development while boosting confidence. With the full implementation of the Network Drama Distribution License, the production of high-quality network audio-visual content has been more institutionalized. We look forward to more high-quality network dramas and traditional film and television dramas going hand in hand in the future, jointly promoting the upgrading of the film and television industry and further promoting the prosperity and development of socialist literature and art.　　(Niu Mengdi)

　　The evaluation of scientific and technological talents once again ushered in heavy news! On November 9, the Ministry of Science and Technology, together with the Ministry of Education and other seven departments, jointly held a kick-off meeting for the pilot reform of scientific and technological personnel evaluation, and deployed and promoted the Work Plan on Carrying out the Pilot Reform of Scientific and Technological Personnel Evaluation (hereinafter referred to as the Plan). Focusing on making good use of living talents in national scientific and technological tasks, the Plan focuses on "what to evaluate, who will evaluate, how to evaluate and how to use", breaks through "breaking the four standards" and "setting new standards", ensures deepening reform and policy coordination, and builds an evaluation system of scientific and technological talents oriented to innovative value, ability and contribution according to the types of innovative activities, so as to provide strong talent support for realizing high-level scientific and technological self-reliance and building a world-class scientific and technological power.

　　The "Proposal" is clear, insisting on problem orientation, classified promotion, use of traction and coordinated implementation. "Promote the reform of talent evaluation in major national innovation activities such as major scientific and technological tasks and major innovation base construction, and strive to overcome ‘ Only papers, titles, academic qualifications and awards ’ Tendency. " The relevant person in charge of the Department of Science and Technology Talents and Science Popularization of the Ministry of Science and Technology said that the reform highlights the national goal and mission orientation, and insists on who uses who to evaluate, so as to use the evaluation and evaluation appropriately and use the evaluation results scientifically.

　　The reporter of Science and Technology Daily learned that the two-year pilot reform of evaluation of scientific and technological talents will be carried out in 12 research institutes including Shanghai Institute of Microsystems and Information Technology, Institute of Computing Technology of Chinese Academy of Sciences and China Academy of Water Resources and Hydropower Research, 9 universities including Tsinghua University, Peking University and Zhejiang University, and 6 places including Shanghai and Shandong Province.

　　Facing the difficulty of implementing talent evaluation reform

　　The CPC Central Committee and the State Council attached great importance to the evaluation of scientific and technological talents. In 2018, the Central Office and the State Council issued "Guiding Opinions on Promoting the Reform of Talent Evaluation Mechanism by Classification" and "Opinions on Deepening the Reform of Project Evaluation, Talent Evaluation and Institutional Evaluation", and made systematic arrangements for improving the evaluation standards by classification and promoting the reform of "three evaluations".

　　"All localities and relevant departments have conscientiously implemented the requirements of the central authorities and issued ‘ Break the four virtues ’ And a series of reform measures, the reform of scientific and technological talent evaluation has made positive progress. " However, the person in charge admits that compared with the demands of the majority of scientific researchers and the realization of high-level scientific and technological self-reliance, there are still problems in the implementation of the evaluation reform of scientific and technological talents, and the "sense of acquisition" of scientific and technological talents is not strong.

　　In view of the outstanding problems such as "setting a new standard" after the talent evaluation "breaking the four standards", the innovation of evaluation methods and the inadequate construction of the evaluation system of employers, the "Plan" clarified the road map for the pilot reform of scientific and technological talent evaluation, and systematically deployed it from both the internal and external environment of the unit.

　　Explore new evaluation indicators, methods, cycles and internal systems according to different types of scientific and technological innovation activities and design the system; The external environment mainly deploys tasks from the aspects of promoting the reform linkage of "Three Evaluations" by relevant departments and building a talent evaluation system with industry characteristics. Through internal and external collaborative linkage, it explores the formation of an evaluation system for scientific and technological talents that is conducive to concentrated research.

　　"Through the two-year pilot, we will explore the formation of classified evaluation indicators and evaluation methods for scientific and technological talents of different types of innovative activities, and the evaluation mechanism for the discovery, training, use and encouragement of scientific and technological talents will be more perfect, forming an operational, replicable and scalable experience." The person in charge said.

　　Focus on the classification of national missions and carry out pilot projects

　　It is worth noting that this pilot insists on having both ability and political integrity. On the basis of strengthening the evaluation of scientific spirit and academic ethics of scientific and technological talents, the pilot tasks are deployed according to four types of innovative activities: undertaking major national research tasks, basic research, applied research and technology development, and social welfare research.

　　Specifically, the evaluation of scientific and technological talents who undertake major national research tasks is guided by supporting and serving the country’s major strategic needs, and an evaluation index that reflects the actual contribution and innovation value of supporting national security, breaking through key core technologies and solving major problems in economic and social development is established; The evaluation of basic research talents is guided by academic contribution and innovative value, which breaks the quantitative tendency of "only papers" and explores the low-frequency and long-term assessment mechanism; The evaluation of applied research and technology development talents is guided by technological breakthroughs and industrial contributions, focusing on the evaluation of representative achievements such as technical standards, technical solutions, high-quality patents, industrialization of achievements transformation, and deep integration effects in Industry-University-Research; The evaluation of social welfare research talents focuses on the ability and effect of serving public management, responding to emergencies, safeguarding people’s livelihood and social security, and other common key technology development and services, and no hard economic benefit evaluation index may be established.

　　Moreover, the "Program" also puts forward clear requirements for local governments to carry out comprehensive pilot reform of scientific and technological talent evaluation, highlight the characteristics of regional scientific and technological innovation and talent development, strengthen institutional mechanism reform, policy innovation and resource integration, systematically design local talent evaluation reform, and promote comprehensive reform experiments.

　　"The evaluation reform of scientific and technological talents is a systematic project with high complexity and difficulty, which is related to the vital interests of scientific researchers. The smooth development and effectiveness of the pilot work cannot be separated from the guidance, supervision and service guarantee of relevant departments and localities, and it is also inseparable from the initiative and implementation of the pilot units." The relevant person in charge said.

　　To this end, the "Program" puts forward requirements for relevant departments, pilot places and units respectively. For example, six departments, including the Ministry of Education and the Ministry of Industry and Information Technology, as the competent departments of the pilot units, should improve the industry talent evaluation mechanism and give employers the right to evaluate independently.

　　As the main responsible department, the Ministry of Science and Technology will shoulder the responsibility of organizing and promoting and take the lead in reform, such as breaking the "four talents" in the evaluation of scientific and technological plan projects, performance evaluation of scientific research institutions and selection of scientific and technological talent plans, highlighting innovation value, ability and contribution orientation, and summarizing concise and solidified results in time.

　　(Science and Technology Daily, Beijing, November 9 th)

No matter what kind of social product it is, its ultimate goal is to help users build links. Since the development of social products, the form has matured. Among them, relationship chain, interaction and content are the core elements of social products. This paper analyzes these three key elements, hoping to bring you some inspiration.

After working in an outsourcing company for more than two years, I joined a startup company and started my own exploration in the social field as the head of its overseas social application. In the following time, I will summarize my exploration experience in writing regularly and share it with you.

I’m not very knowledgeable. I hope everyone can learn something from it.

If we want to make a good social product, there is no doubt that the first thing we need to know is: What is social?

According to the definition of Baidu Encyclopedia, socialization (that is, social communication) refers to the social activities in which individuals communicate with each other for material and spiritual exchanges under certain historical conditions.Because the essence of animal society is the sum of all social relations formed on the basis of material production and labor, social communication is the inherent requirement of animal nature to a certain extent.

In the past, people’s social activities included offline salons, blind dates and even chatting among friends, and the Internet brought new social ways, and social products such as WeChat, Soup and soul emerged one after another. People have met their needs for material, information and spiritual communication in various ways.

However, just as a successful person owns a house and a car, we cannot define that success equals a house and a car.Whether it is the exchange of materials or the exchange of information and spirit, it is only the appearance of social interaction to a certain extent. I think the essence of social interaction is linking.. Based on the link, one person, a group of people, established contact with each other, thus having the possibility of exchange.

At the same time,The formation of links is limited and influenced by time and space. Based on different link subjects, media and forms, various types of social products that we are familiar with have emerged.

For example, distinguished by the main body of the link, it links the social application WeChat of acquaintances of relatives and friends, and links the social product soul； of strangers who have no contact with strangers; Differentiated by link media, there are interest-based social applications and LBS social products based on geographical location. In terms of form, there are audio social products Hertz, video social products HOLLA, cat call and so on.

butNo matter what kind of social product it is, its ultimate goal is to help users build links.

Relationship chain is one of the core elements of social products, which refers to the connection between people. The network formed by the combination of multiple relationship chains is what people often call relationship network.What is human nature? Marx concluded that "the essence of human beings is not an abstract thing inherent in a single person, but in reality, it is the sum of all social relations". In our daily life, no one can get rid of "relationships". Relatives, friends, classmates and partners have various relationships, strong and weak.

Different types of social products often have different entry points for the relationship chain.

Cut in with a strong relationshipWechat, which everyone is very familiar with, is a social product based on strong acquaintances, not only WeChat, but also most IM products such as WeChat and QQ. The key to acquaintances’ socialization lies in whether they can successfully transfer the offline relationship chain of users to online, thus making the communication between acquaintances more convenient. Once the relationship chain is successfully migrated online,The strong relationship between acquaintances is itself a very powerful moat for acquaintances’ social products.In my opinion, this is why it is difficult for new acquaintance social products such as Duoshan to shake the dominance of WeChat in the social field of acquaintances.

At present, there are still new social products coming into the market, such as soda and other products that I brushed recently when I brushed Tik Tok. Most of them areCut in from the perspective of weak relationshipSocial networking products for strangers. At present, the more successful social products for strangers in the market include Momo based on LBS, soul with three views matching as the selling point, Hertz with the main voice socialization, Douban with interest dimension, Post Bar and so on.Weak relationship is the starting point of strong relationship. Compared with strong relationship, the establishment cost and migration cost of weak relationship are much lower.This is why it is difficult for a monopoly giant like WeChat to appear in the field of strangers’ social interaction, and why there are always new products coming into the track of strangers’ social interaction.

butDue to the low credibility of weak relationships, most social products of strangers have to improve their credibility through various channels to realize the core value of the products.For example, social products with heavy value such as Momo and exploration will require users to authenticate with real people, while soul, which focuses on soul socialization, provides users with psychological test questions.

The strength of all relationship chains may fluctuate with time. For the same relationship, such as partnership, the feelings of couples who stay together every day may continue to heat up, and couples who have been separated from each other for a long time may become unfamiliar. The fluctuation of relationship strength is inseparable from the interaction between them.

Interaction is also the core element of social products.

Interaction refers to the process of interdependent behavior between individuals, groups and groups in society through language or other means to spread information.It takes two hands to clap, and one person can’t interact.

Users who establish relationships can interact, and the interaction between users in turn affects the stability and strength of the relationship chain. The key is thatInteractive mode, intensity, frequency and value..

Taking the common Internet social products as an example, in most products,Common interactive behaviors include chatting, liking, commenting and forwarding.And different interaction modes correspond to different interaction intensities. For example, the interactive intensity of comments is greater than that of likes. And the same is chat, the interactive intensity of video chat is generally greater than that of text chat.Under normal circumstances, the greater the intensity of interactive behavior, the easier it is to enhance the closeness of the relationship between users.

For the same kind of interaction, the higher the interaction frequency, the closer the general relationship. But this is not absolute, because whether user interaction is effective or not, there is also a very important key point, that is, the value of interaction.

There are a thousand cups of wine for every bosom friend, and more than half a sentence for lovers. In our daily life, we may encounter such a situation. For example, at work, some colleagues have worked with you for a long time, and you are still familiar strangers after work for a long time, while some people have become friends through a few supper after work, even though they have not known each other for a long time.The reason for this difference lies in the difference of interactive value.The communication with old colleagues may stop at work. These exchanges are conducive to the smooth development of work, but they can’t make you know each other better. However, chatting in different places during the string talks makes you have a basic understanding of each other’s hobbies and values, thus becoming friends.

Interaction is the key to the generation and change of the relationship chain between users, but a good interaction can’t happen out of thin air.When posting a comment, there must always be someone to comment on and chat with others. The key is to talk about what won’t lead to embarrassing chat.The key auxiliary information is the content.

Content is auxiliary information to help users interact, which refers to the information that users disclose to others.In the early days of the Internet, limited by the network technology and network speed, the content display among users was mainly in words, resulting in pure text social products such as BBS, blogs and IM tools. With the maturity of the processing technology of pictures and audio and video, various types of content such as pictures, audio and video began to participate in social activities in a richer form.

For any social product, the content supply chain is basically composed of three main links: content production, content distribution and content consumption, and how to optimize the content supply chain is particularly important for all social products.

To guide users to output valuable content, we can refer to the concept of value proposition in economics and encourage users to output content with internal or external value, which can be in the form of spatial dynamics, photo wall and so on.For products with sliding pairs such as tinder or Explore, they encourage users to upload more personal photos and update more real personal information, which belongs to the content produced by users. Of course, how to recommend suitable users to each other is what tinder and explorers need to consider in the content distribution. For products such as Tik Tok, Yikan and Weibo, which focus more on content socialization, besides personal data, they will try their best to let users publish more dynamic content, such as providing them with tools for editing pictures and videos, lowering the threshold for dynamic publishing, and providing material or spiritual incentives for high-quality content, thus encouraging users to produce content. With sufficient content sources, content distribution has become a top priority. For example, Tik Tok is famous in the Internet circle for its extremely powerful content recommendation algorithm.

Of course, we can’t be anticlimactic. On the consumption side of content, how to help users consume content better and encourage users to interact with content producers based on content is the key ending to complete the whole social closed loop.

In subsequent articles, I will further discuss the content supply chain, so I won’t expand it here for the time being.

This is the end of the article, hoping to play a role in attracting jade.

Aaron, WeChat official account: In Aaron’s cabin, everyone is a product manager columnist. Head of social products at sea, an internet observer who is keen on sharing.

This article was originally published in everyone is a product manager. Reprinting is prohibited without permission.

The title map comes from Unsplash and is based on CC0 protocol.

BYD Yuan PLUS is an A-class SUV based on E-platform 3.0, which provides two cruising range options: 430 km and 510 km. It has a power output of 150 kW/310 N m, and the official acceleration of 100 kilometers takes only 7.3 seconds. In addition, the model is also equipped with intelligent configurations such as intelligent navigation system, LAC parallel auxiliary system and AEB automatic emergency braking system.

Metaplus provides two kinetic energy recovery modes, namelyStandard kinetic energy recovery modelAnd a large kinetic energy recovery mode. In the standard kinetic energy recovery mode, the driving experience is almost the same as that of a fuel car, while in the larger kinetic energy recovery mode, although the impact of kinetic energy recovery can be felt, it will not affect the driving experience like sudden braking.

The car has three driving modes, namelyEconomy, Comfort and Sports Mode. When switching between different modes, the change between other modes is not obvious except that the throttle response will be more sensitive in sports mode.

The interior design of Yuan PLUS is also very intimate. For example, the door handle in the car not only has the function of opening and closing the door, but also can control the sound and atmosphere lights. However, to open the door, you need to pull the switch twice to ensure safety. In addition, the sound effect in the car is excellent, and the whole car is equipped with 8 stereos.

In terms of ride comfort, Yuan PLUS performed well. The front seats provide good wrapping, and the rear seats are soft, and even the middle seats are comfortable. In addition, the panoramic skylight and the fully flat rear platform design provide passengers with sufficient head and leg space.

Yuan PLUS also has some detailed designs, such as the PM2.5 air purification system, which will remind passengers by changing the color of the ambient light when the air quality in the car is poor. For example, when the air quality in the car is poor, the ambient light will be displayed in red, and when the air quality is good, the ambient light will turn green.

In addition, Yuan PLUS’s interior design is inspired by sports, and five body colors, surfing blue, skiing white, climbing gray, adventure green and parkour red, are also related to sports. At the same time, it supports fast charging, and it can travel about 100 kilometers in ten minutes.

To sum up, Yuan PLUS is a car worthy of consideration, which combines sports elements, practical space and good comfort. Its starting price of 137,800 yuan is competitive in pure electric SUVs of the same level.

ifeng.com Auto News On September 22, Changan Qiyuan E07 officially started pre-sale. The new car is the world’s first mass-produced variable SUV based on Changan SDA architecture. The new car has variable shape, variable function and variable software. It integrates the functions of coupe, pickup truck and SUV, and one car tops multiple cars. It is a veritable "variable new car". In addition, Qiyuan E07 is also the only mass-produced model in the world equipped with a central ring network architecture, which can be called "China’s version of Cybertruck".

Qiyuan E07 provides both extended range and pure electric power. There are three models on pre-sale this time: the pre-sale price of the extended range Max smart driving version is 249,900 yuan, the pre-sale price of the pure electric Max smart driving version is 269,900 yuan, and the pre-sale price of the pure electric Ultra high-performance version is 319,900 yuan. It is reported that Qiyuan E07 will be put into mass production in October this year and will be officially listed at the end of the year.

With the opening of the new car pre-sale, Changan official also announced the predetermined rights and interests of Qiyuan E07: the first 10,000 subscribers can enjoy six gifts worth 66,000 yuan: including the first owner can enjoy the whole vehicle and three electricity lifetime quality assurance, Changan high-end intelligent driving for life free, 20,000 yuan worth of intelligent magic carpet set (empty hanging + CDC) limited gift, 21-inch wheels worth 20,000 yuan + Michelin tires limited 10,000 yuan purchase, 5,000 yuan worth of technology enjoyment set limited gift, and 2,000 yuan to 5,000 yuan cash purchase model.

The body size of Qiyuan E07 is 5045mm long/1996mm wide/1695mm high, with a wheelbase length of 3120mm. It adopts a 5-seat layout and is positioned as a medium and large SUV for families.

In terms of appearance, the Qiyuan E07 features a unique slippery back shape, with the upper body displaying the dynamic feel of a four-door coupe. After the glass and tailgate glass in the back half of the roof are fully opened, it can be changed from an SUV to a pickup in seconds. The freedom to switch between various body shapes greatly enhances the use of this new car.

Qiyuan E07 pioneered the interstellar opening and closing dome. After the tail sunroof is opened, the upper limit of the height of the load can be greatly increased, and large items such as moving and camping can be done in one car. The rear tailgate is opened by electric flat flip, and the height of the body is adjusted with the air suspension, which is very convenient for handling large and heavy objects.

Between the passenger compartment and the trunk is an intelligent folding partition and a liftable electric partition glass. When the glass is raised, the passenger compartment is completely isolated from the trunk, and noise and odor will not be strung into the passenger compartment. Bringing pets or odorous items can ensure that the occupants in the car still have a comfortable environment.

Lowering the glass and flattening the second row of seats allows for a "queen room" in the car; while the "one-click pickup" function can directly connect the trunk and cabin to the external environment, presenting a completely open pickup carrying space.

The rear cabin of the Qiyuan E07 can bear 300kg and can withstand 2-3 people sitting in the rear cabin. Whether it is parent-child camping or fishing with friends, the changeable space of the Qiyuan E07 can bring users a very practical expansion of the car scene.

All Changan Qiyuan E07 series come standard with front double zero-gravity seats with leg rests. The front and rear seats are equipped with electric adjustment, heating, ventilation and 12-point massage functions, which are comfortably configured to fill up. In addition, the new car is also equipped with 256-color breathing effect ambient lights, 18 theater sound field speakers, perfumer masters, etc.

The new car is also equipped with a five-screen linkage interaction system: the front row has a 28.86-inch HUD head-up display, the "Sunflower" central control screen that can be deflected left and right, and the "Queen’s co-pilot screen" integrated on the co-driver’s visor to achieve navigation and drama tracking without interfering with each other; rear passengers also have 2D/naked eye 3D-Pad dual screens to enjoy audio and video entertainment at any time.

In terms of power, Qiyuan E07 is equipped with an 800V silicon carbide platform as standard, providing both pure electric and range-extending power, and is equipped with Changan’s self-developed "Golden Bell Battery", which has the characteristics of super safety, super long battery life and ultra-fast charging. The comprehensive battery life of CLTC working conditions reaches 651km, and the fast charge can replenish 365km in 15 minutes.

The pure electric version has single-motor two-wheel drive and dual-motor four-wheel drive. Among them, the single-motor two-wheel drive model has two power versions with a maximum power of 165kW and 252kW, and the maximum speed is 201km/h. The four-wheel drive version adopts the front 188kW + rear 252kW dual-motor timely four-wheel drive, and the comprehensive maximum power reaches 440kW, the comprehensive peak torque is 645N · m, and the measured acceleration score of 0-100km/h is 3.96 seconds, and the maximum speed reaches 210km/h.

The extended range version of the model is equipped with the latest generation of extended range platform developed by Changan – Changan Tianyu Smart Range Extension, which for the first time in the world adopts ENC engine active noise reduction technology and multi-damping shock absorption system, so that the extended range engine has less noise and vibration when running, closer to the driving experience of a pure electric car.

The extended range power system of Qiyuan E07 includes a 1.5T range extender with a maximum power of 105kW and a 39.05kWh battery. It also has single motor two-drive and dual motor four-drive options: the extended range single motor two-drive version is equipped with a rear axle motor with a maximum power of 231kW, with a pure electric battery life of 200km; the extended range dual motor four-drive adopts the front 131kW + rear 231kW dual motor, with a pure electric battery life of 185km.

Qiyuan E07 is equipped with air spring + CDC intelligent magic carpet suspension, which supports static self-seeking and dynamic adaptive adjustment. Suspension height and hardness are adjustable, and the body height adjustment range reaches 90mm, the ground clearance is up to 217mm, and the maximum wading depth is 600mm.

In terms of smart driving, Qiyuan E07 is equipped with the leading Changan smart driving system, and the hardware is equipped with a total of 30 smart driving sensors including 2 lidars and the NVIDIA Orin-X smart driving chip with 254Tops of computing power. It adopts three core technologies of "BEV perception", road large model technology and air suspension control system, which can realize L2 + smart driving assistance and provide functions such as high-speed NOA, urban commuting assistance, and remote car moving.

In terms of safety, the Changan Qiyuan E07 adopts a new generation of safety body design, equipped with industry-leading front and rear body integrated die-casting technology, the proportion of high-strength steel and aluminum alloy is more than 90%, and the key parts such as the front cover plate and the car body are made of aluminum alloy, which greatly improves the durability and safety of the vehicle. After the Qiyuan E07 has undergone a 150km/h offset crash test, the door can still be opened normally.

Qiyuan E07 has the control and comfort of a coupe, the large space and passability of an SUV, the loading capacity and scalability of a pickup truck. At the same time, as an SUV model, it is not affected by policies such as 15-year mandatory scrapping and restriction of pickups. Its strong all-scene applicability makes it have unique product value. The forward-looking intelligent technology also makes its future use experience have a very broad imagination space. Compared with the new energy SUV at the same price, the pre-sale price from 249,900 yuan undoubtedly has a very prominent advantage in terms of functional attributes. From the rich power configuration of this car, it is speculated that the official launch of the new car will also bring models with lower price thresholds, which is very worth looking forward to.

　　Xinhua News Agency, Guangzhou, January 17th Topic: Interview Notes: In the special Spring Festival travel rush, peace is the background color of going home.

　　Xinhua News Agency reporter Wu Tao

　　At 5: 36 on the 17th, the passenger train D4545, which is the first Spring Festival travel rush train in Guangdong this year, left Guangzhou Station with more than 1,000 passengers.

　　In 2022, the first train D445 in Spring Festival travel rush, Guangdong Province departed from Guangzhou Railway Station. (Photo courtesy of Guangzhou Railway Station)

　　It is another year in Spring Festival travel rush. Under the requirements of epidemic prevention and control, it is necessary to satisfy the wishes of hundreds of millions of people to go home and ensure the safety of their way home, so that Spring Festival travel rush in 2022 has special significance.

　　Under the epidemic, peace and health are the background of going home. One by one "Spring Festival people" are taking actions to protect the peace of their way home.

　　The car should be safe. Trains that have been running for a day must enter the maintenance yard for maintenance according to regulations. The workload of vehicle maintenance is huge, and every screw should be checked clearly to ensure the good operation of the train. On average, each train needs to detect about 17,000 parts, and it takes about 2.5 hours for four people to work at the same time. During the period of Spring Festival travel rush, Guangzhou EMU will overhaul 108 sets of EMUs every day. Because most trains have to be stopped at night before they are put into storage for maintenance, the train mechanics who can only move at night and become "night owls" guard safety in the dark.

　　The mechanic of Guangzhou EMU is overhauling the EMU. (Photo courtesy of Guangzhou EMU)

　　Stand safely. In order to ensure that passengers have a safe environment in the station, the railway department strengthens the ventilation of the station and carries out disinfection work in the waiting room, toilet and other public places such as waiting seats and ticket vending machines. Guangzhou South Railway Station will disinfect customer service facilities such as elevators every four hours, and fully disinfect the station every night.

　　People should be safe. At Guangzhou South Railway Station, the first high-speed rail hub in South China, which is expected to send more than 15 million passengers this year, 33 infrared thermometers are waiting at the entrance and exit gates to detect the temperature of every passenger entering and leaving the station. Guangzhou Station, which witnessed the history of Spring Festival travel rush, Guangdong Province, is expected to send 2.2 million passengers this year. tianhao, secretary of the General Party Branch of Guangzhou Station Passenger Transport Workshop, said that in order to do a good job in epidemic prevention, the station strictly implements the "three 100%" of entering and leaving the station, that is, 100% temperature detection, 100% health code bright code access and 100% wearing masks.

　　"We do our best to let everyone go home safely." Tianhao said.