标签： 上海耍耍网

A number of chemical industrial zones in Jiangsu were exposed to pollution, dug 30 meters underground and buried underground pipes to discharge pollutants.

　　The picture shows a pond photographed in the chemical park of Yanweigang Town, Lianyungang, Jiangsu Province on March 30, 2018. The pond water and beach separated from the sea by a dike are "colorful". Reporter Li Xiangshe

　　Recently, chemical parks in Yancheng, Lianyungang and other places in Jiangsu Province have exposed environmental pollution problems one after another, which has aroused widespread concern in society. A reporter from the Economic Information Daily recently visited a number of Lingang Chemical Industry Zones in Jiangsu Province and found that although the ecological environment has improved, the surrounding ecological environment is still fragile due to too many ecological debts. The leading group of joint investigation in Jiangsu province and city found that some enterprises even dug 30 meters to secretly bury underground pipes to discharge pollutants, causing ecological and environmental problems such as water source and soil. Experts called for an iron fist for future governance, and it is urgent to jump out of the cycle of "remediation as soon as a problem occurs, and remediation after another problem".

　　Scene: disturbing smell

　　Recently, reporters from the Economic Information Daily have visited Binhai, Funing Aoyang, Xiangshui Chemical Industry Park in Yancheng City, Jiangsu Province and Duigou Chemical Industry Park in guannan county City, Lianyungang City. They can smell the smell of chemicals several kilometers away, and the smell of apples and rotten eggs comes into their noses from time to time.

　　"Especially in rainy days and at night, the smell of chemical plants is so strong that sometimes doors and windows can be smelled when they are closed." Some people around Funing Aoyang Chemical Industry Park reflected. "Even if most chemical enterprises are shut down, the smell of overhaul is still unbearable, which shows that the whole process control level was not in place when the chemical enterprises were built." A staff member in charge of environmental protection of Funing High-tech Zone Management Committee said.

　　Besides air, the problem of water is also worrying. The reporter found that around the Lingang Industrial Zone in Guanyun County, Jiangsu Province, the pond water and beach separated from the sea by a dike are colorful; In Funing Aoyang Industrial Park, a sewage ditch in front of pesticide plant, the smell of chemicals is pungent and disgusting.

　　The reporter of Economic Information Daily went deep into Jiangsu Shengshi Chemical Co., Ltd. in Lingang Industrial Zone of Guanyun County, Jiangsu Province, and found that although the company had stopped production and there was no one in the factory, it still smelled pungent. The iron big warehouse in the factory area is rusty. The reporter saw through the crack that there are still bags of things in it. The soil near the iron warehouse is slightly green, and there are many sewage with unknown composition and black color in the pool behind the factory area.

　　The reporter then went to Sanbaigong Village, which is just across the river from the Lingang Industrial Zone in Guanyun County.

　　Jiang Shunyou, a 56-year-old villager, told the reporter that in the past, as long as it was windy, the smell of the surrounding chemical plants would float to the village, which was more pungent. At that time, as soon as they entered the city, others could smell their peculiar smell. Villager Zhuang Guimei reported that the air in the village was very poor in the past, especially at night, and he was afraid to open the window. Moreover, the wind direction is different, and the smell of chemicals blown is also different. However, "in recent years, many chemical plants around have been closed, and the smell is much smaller."

　　Jiang Yufeng and other villagers told reporters that from 2011 to 2016, chemical plants started to discharge more pollutants, and the smell was more serious. In foggy days and rainy days, some chemicals would land on farmland, crops would not grow, and grain output was relatively low. In the past two years, the air quality has improved a lot and the crops are growing well.

　　At the dock of Yanwei Port adjacent to the port industrial zone, the reporter saw that there were similar oily suspended substances flowing on the sea surface, and some construction waste and waste steel were scattered near the port, which was rather messy. Shan Lianye, a 54-year-old fisherman, told reporters that the pollution in the port was serious more than two years ago, and sometimes a blood-red pollution zone could be seen on the water surface. The fish and shrimp caught in those years also had an odor and dared not eat it. In the last two years, the surrounding chemical plants have been shut down a lot, and the environment has improved a little.

　　Investigation: thrilling stealing

　　In order to thoroughly investigate the environmental pollution problems of three chemical industrial parks in Guanhekou, Jiangsu established a provincial and municipal joint investigation leading group, which consists of a comprehensive coordination group and three special investigation teams, including environmental violations, planning and layout, elimination of backward production capacity, and performance supervision, to carry out special investigations. Since the end of April, all special investigation teams have been stationed in Guanyun, Guannan and Xiangshui chemical parks to formulate investigation plans.

　　With regard to the problem of gas odor, the environmental protection departments of cities and counties in Jiangsu Province jointly inspected 41 chemical enterprises in the "Liangguan" Chemical Park one by one, and promptly put on record and investigated the suspected environmental violations of 12 enterprises including Tengyu Chemical in Guanyun County and Vigris Chemical in guannan county. Lianyungang Environmental Protection Department deployed the city’s environmental law enforcement forces, and divided them into six groups to carry out a "carpet" environmental inspection of enterprises in Guanyun County and guannan county Chemical Industry Park. At present, 8 enterprises have been inspected, and 6 suspected environmental violations of 5 enterprises are being investigated and handled. After preliminary investigation, the following problems are mainly found:

　　First, the problem of stealing buried pipes still exists. For the problem of concealed pipes, the governments of Guanyun County and guannan county called more than 20 excavators and pipe jacking detection devices to investigate around the clock. After investigation, a concealed pipe was found 3 kilometers near the estuary of Yihe River in Guanyun County. After the reverse tracking of the pipe and the sampling analysis of water samples and nearby soil, Lianyungang Yongrun Chemical Co., Ltd. was locked up. At present, the public security department has taken control measures against three responsible persons of the enterprise, and the county government has also ordered the enterprise to close down.

　　"After we found the concealed pipe, we tracked it all the way to the sewage pool of Yongrun Chemical Co., Ltd., which is 3 kilometers away. The whole concealed pipe was U-shaped, with the deepest point of 30 meters and the caliber of 110 mm." A staff member of Lingang Branch of Guanyun County Environmental Supervision Bureau introduced.

　　Second, there are still multiple problems in drinking well water, farmland water and pond water. Xu Yong, an accountant in Sanbaigong Village, told the reporter that before the tap water was connected to the village in November 2017, the villagers relied on two deep wells for drinking water. The water quality analysis results of Lianyungang Environmental Monitoring Center Station on April 19th showed that the ammonia nitrogen index of one of the wells in the village was slightly higher than the standard. Zhuang Guimei, who runs a supermarket in the village, told reporters that although the well water in the village can be drunk, some villagers did not dare to drink it because they were worried about the pollution of the well water.

　　The reporter’s investigation also found that in the cement sewer of Sanbaigong Village, the sewage was mixed with garbage, with a black color and a foul smell, which needed to be rectified urgently. Some ditches in farmland are mostly stagnant water, which is not connected with each other. The water surface is yellow and black, and some pesticide packages and bottle caps are scattered along the ditches. Lianyungang environmental protection department also sampled and tested two farmland ditches in Sanbaigong Village, and the permanganate index was high. The permanganate index of the water sample in the north-south junction ditch between Sanbaigong Village and Yannan Farm is as high as 19.6, which far exceeds the environmental quality standard of Class V surface water.

　　Third, soil pollution in some areas is worrying. In a farmland in Sanbaigong Village, the reporter found that the surrounding crops are growing well, and only one inch of grass is barren in the middle, which is very strange. The local village cadres explained that crops could not grow because of the low-lying saline-alkali land, but the reporter found that the surrounding areas where crops grew were almost the same terrain, which was difficult to establish. At present, the local environmental protection department has sampled and analyzed the soil there.

　　Action: Strict law enforcement.

　　In view of the serious damage to the ecological environment in Binhai County, Dafeng District, Xiangshui County of Yancheng City, Guanyun County of Lianyungang City, guannan county City and Dainan Town of xinghua city, in late April, Jiangsu Provincial Environmental Protection Department successively implemented a six-month regional approval restriction for the above six areas. During the period, the examination and approval of environmental impact assessment documents of all construction projects except environmental protection infrastructure projects and people’s livelihood projects will be suspended.

　　Aiming at the areas along the Yangtze River where chemical enterprises are also highly concentrated, Jiangsu Province has launched a special campaign of joint enforcement of environmental protection in eight cities along the Yangtze River, which combines cross-checking with provincial supervision.

　　The one-month joint law enforcement campaign mainly targeted at stationary pollution sources in Nanjing, Wuxi, Changzhou, Suzhou, Nantong, Yangzhou, Zhenjiang, Taizhou and counties (cities, districts) under its jurisdiction, focusing on key parks and enterprises in eight cities along the Yangtze River with strong public reaction, prominent media attention, serious pollution discharge and lagging progress in remediation. The inspection team is composed of the environmental protection departments and public security organs of eight cities along the Yangtze River who are responsible for selecting the business backbones in their respective jurisdictions.

　　Chen Zhipeng, member of the party group and deputy director of Jiangsu Provincial Environmental Protection Department, bluntly said that the areas along the Yangtze River in Jiangsu are densely populated and densely populated, and the resources and environment have been in a tight state. "About two-thirds of the province’s heavy chemical production capacity is concentrated along the banks of the Yangtze River, and the total wastewater discharge of the eight cities along the Yangtze River accounts for 74% of the province. Although law enforcement has been continuously strengthened in recent years and environmental crimes have been severely cracked down, illegal cases are still high. "

　　"Since last year, the province’s public security organs have investigated and dealt with 534 criminal cases of environmental pollution, including more than 400 cases in 8 cities along the Yangtze River, accounting for more than 70%, showing new characteristics such as more concealed crime methods, more complicated crime chains and more prominent cross-regional crimes." Shang Jianrong, deputy secretary and deputy director of the Party Committee of Jiangsu Provincial Public Security Department, said that this joint law enforcement special action will combine end-to-end attack with front-end governance, macro-judgment with case analysis, and crack down on pollution crimes in the whole chain and all links, so as to clear the source, break the chain and remove the roots.

　　According to the information released by Jiangsu Provincial Environmental Protection Department recently, all inspection teams have been put in place and a number of environmental pollution problems have been discovered one after another. Among them, the sixth inspection team composed of Nantong environmental monitoring and public security personnel found that a stainless steel production enterprise in Zhangjiagang City had a concealed pipe leading directly to the river, and the end of the concealed pipe was connected with the storage tank of blackening process washing wastewater (hazardous solid waste). At the same time, similar waste liquid was dumped in the farmland behind the factory. Subsequently, the local police intervened in advance, and after locking the evidence, they will quickly file a case for investigation according to the law.

　　During the on-site inspection of a hot dip galvanizing plant in Yangzhou, Nanjing Group found that the farmland soil on the west side of the plant was strongly acidic, which was consistent with the acidity of the waste liquid in the waste liquid barrel in the plant, and it was suspected of stealing waste liquid. The monitoring personnel further compared and analyzed the soil and waste liquid samples. The inspectors also found that the company’s acid mist tower was strongly acidic and did not add lye for absorption, which was suspected that the facility was not operating normally.

　　"The purpose of the special action is very clear, that is, to attack the environmental problems that have been strongly reflected by the masses and have not been solved for a long time, to break down regional protection, to prevent human law enforcement and pollution, to crack down on environmental violations, to safeguard the interests of the masses, and to protect the ecological security of the Yangtze River." Ding Nianlong, head of Nantong Group, said. (Reporter Lu Huadong and Qin Huajiang)

Statistical bulletin on the development of education in 2022： the total number of students studying in higher education is 46.55 million.

Cctv news: On July 5th, the website of the Ministry of Education released the statistical bulletin on the development of national education in 2022.

2022 is an extremely important year in the history of the party and the country. It is of great strategic significance and far-reaching influence to systematically plan the education of the 20th National Congress of the Communist Party of China as the basic and strategic support for building a socialist modern country in an all-round way. In the face of profound changes in the internal and external environment, under the strong leadership of the CPC Central Committee and the State Council, the education system adheres to the guidance of the Supreme Leader’s Socialism with Chinese characteristics Thought in the new era, thoroughly studies and implements the spirit of the 20th Party Congress, actively promotes new progress in education, new achievements in all work, and new changes in the outlook of education, strives to make a good historical journey of building a strong educational country, and makes new educational contributions to building a socialist modern country and promoting the great rejuvenation of the Chinese nation in an all-round way.

I. Synthesis

There are 518,500 schools at all levels in China, with 293 million students and 18,803,600 full-time teachers.

Second, preschool education

There are 289,200 kindergartens in China, a decrease of 5,610 or 1.90% over the previous year. Among them, there are 245,700 inclusive kindergartens, an increase of 1,033 or 0.42% over the previous year, accounting for 84.96% of the national kindergartens.

There were 46,275,500 preschool children, a decrease of 1,776,600 or 3.70% over the previous year. Among them, there are 41,440,500 children in inclusive kindergartens, a decrease of 741,600 or 1.76% over the previous year, accounting for 89.55% of the children in kindergartens nationwide, an increase of 1.77 percentage points over the previous year.

The gross enrollment rate of preschool education was 89.7%, an increase of 1.6 percentage points over the previous year.

There are 3,244,200 full-time teachers in preschool education, and the proportion of full-time teachers with college education or above is 90.30%.

Third, compulsory education

There are 201,600 schools in compulsory education in China. Compulsory education enrolled 34.3277 million students, 159 million students and 10.6546 million full-time teachers, and the consolidation rate of nine-year compulsory education was 95.5%.

1. Primary education

There are 149,100 ordinary primary schools in China, a decrease of 5,162 or 3.35% over the previous year. There are also 76,900 primary school teaching points, a decrease of 6,690 from the previous year.

The primary school enrolled 17,013,900 students, a decrease of 811,900 students or 4.55% over the previous year; There were 107 million students, a decrease of 478,800 or 0.44% over the previous year. There were 17,406,100 graduates, an increase of 225,800 or 1.31% over the previous year.

There are 6,629,400 full-time teachers in primary education; The ratio of students to teachers is 16.19: 1; The qualification rate of full-time teachers is 99.99%; The proportion of full-time teachers with bachelor degree or above is 74.53%.

Primary schools have a total school building area of 889.618 million square meters, an increase of 18.3282 million square meters over the previous year. The proportions of schools with up-to-standard facilities and equipment are as follows: 93.52% schools with up-to-standard sports venues (gymnasiums), 97.07% schools with up-to-standard sports equipment, 96.81% schools with up-to-standard music equipment, 96.79% schools with up-to-standard art equipment and 96.62% schools with up-to-standard mathematical and natural experimental equipment, all of which are higher than the previous year.

There were 2,847,500 classes in primary school, a decrease of 23,200 over the previous year. There were 13,800 large and super-large classes with more than 56 students, a decrease of 0.72 million over the previous year, accounting for 0.48% of the total number of classes, a decrease of 0.25 percentage points over the previous year. Among them, there were 373 super-large classes with more than 66 students, a decrease of 109 over the previous year, accounting for 0.01% of the total number of classes, a decrease of 0.01 percentage points over the previous year.

2. Junior high school education

There are 52,500 junior high schools (including 8 vocational junior high schools) in China, a decrease of 391 or 0.74% over the previous year.

The number of students enrolled in junior high school was 17,313,800, an increase of 259,400 or 1.52% over the previous year. There were 51,206,000 students, an increase of 1,021,600 or 2.04% over the previous year; There were 16,239,200 graduates, an increase of 367,800 or 2.32% over the previous year.

There are 4,025,200 full-time teachers in junior high school education; The ratio of students to teachers is 12.72: 1; The qualification rate of full-time teachers is 99.94%; The proportion of full-time teachers with bachelor degree or above is 91.71%.

The junior high school has a total school building area of 786.4835 million square meters, an increase of 30.5465 million square meters over the previous year. The proportions of schools with up-to-standard facilities and equipment are as follows: 95.68% schools with up-to-standard sports venues (gymnasiums), 98.08% schools with up-to-standard sports equipment, 97.88% schools with up-to-standard music equipment, 97.88% schools with up-to-standard art equipment and 97.75% schools with up-to-standard scientific experimental equipment, all of which are higher than last year.

There are 1,118,500 classes in junior high school, an increase of 19,600 over the previous year. There were 4,522 large and super-large classes with more than 56 students, a decrease of 2,703 over the previous year, accounting for 0.40% of the total number of classes, a decrease of 0.25 percentage points over the previous year. Among them, there were 174 super-large classes with more than 66 students, an increase of 68 over the previous year, accounting for 0.02% of the total number of classes, an increase of 0.01 percentage points over the previous year.

3. Children of migrant workers

There are 13,646,800 children of migrant workers in the compulsory education stage. Among them, 9,698,600 students attended primary schools and 3,948,300 students attended junior high schools.

Fourth, special education

There are 2314 special education schools in China, an increase of 26 or 1.14% over the previous year.

Recruited 146,300 students with various forms of special education, a decrease of 2,805 over the previous year; There were 918,500 students in school, a decrease of 1,265 or 0.14% over the previous year. Among them, there are 335,700 students in special education schools, accounting for 36.54% of the students in special education.

There are 72,700 full-time teachers in special education.

Fifth, high school education

The gross enrollment rate in senior high school was 91.6%, an increase of 0.2 percentage points over the previous year.

1. General high school education

There are 15,000 ordinary high schools in China, an increase of 441 or 3.02% over the previous year.

Ordinary high schools enrolled 9,475,400 students, an increase of 425,900 students or 4.71% over the previous year; There were 27,138,700 students, an increase of 1,088,500 or 4.18% over the previous year; There were 8,241,000 graduates, an increase of 438,800 or 5.62% over the previous year.

There are 2,133,200 full-time teachers in ordinary high school education; The ratio of students to teachers is 12.72: 1; The qualification rate of full-time teachers is 99.03%.

Ordinary high schools have a total building area of 680.349 million square meters, an increase of 36.728 million square meters over the previous year. The proportion of schools with up-to-standard facilities and equipment in ordinary senior high schools is as follows: 94.46% schools with up-to-standard sports venues (gymnasiums), 96.50% schools with up-to-standard sports equipment, 95.85% schools with up-to-standard music equipment, 96.05% schools with up-to-standard art equipment and 96.18% schools with up-to-standard scientific experimental equipment, all of which are higher than the previous year.

2. Secondary vocational education

There are 7201 secondary vocational schools in China, with the same diameter decreasing by 93 compared with the previous year.

Secondary vocational education enrolled 4,847,800 students, with the same diameter decreasing by 42,100 students or 0.86% compared with the previous year. There were 13,392,900 students, with the same diameter increasing by 274,800, or 2.09%. There were 3,992,700 graduates, with the same diameter increasing by 239,000, or 6.37%.

There are 718,300 full-time teachers in secondary vocational education; The ratio of students to teachers is 18.65: 1; The proportion of full-time teachers with bachelor degree or above is 94.86%; "Double-qualified" full-time teachers account for 56.18% of full-time teachers in professional (technical) courses.

VI. Higher education

There are 3013 institutions of higher learning in China. Among them, there are 1239 ordinary undergraduate schools (including 164 independent colleges), an increase of 1 over the previous year; 32 vocational schools at the undergraduate level; 1489 higher vocational (junior college) schools, an increase of 3 over the previous year; There are 253 adult institutions of higher learning, 3 fewer than the previous year. There are also 234 scientific research institutions that train graduate students.

The total number of students in various forms of higher education is 46.55 million, an increase of 2.25 million over the previous year. The gross enrollment rate of higher education was 59.6%, an increase of 1.8 percentage points over the previous year. The average size of an ordinary undergraduate school is 16,793, the average size of an undergraduate vocational school is 19,487, and the average size of a higher vocational school is 10,168.

The number of graduate students enrolled was 1,242,500, an increase of 66,000 or 5.61% over the previous year; Among them, there are 139,000 doctoral students and 1,103,500 master students. There were 3,653,600 graduate students, an increase of 321,200 over the previous year, an increase of 9.64%; Among them, there are 556,100 doctoral students and 3,097,500 master students. There are 862,200 graduate students, including 82,300 doctoral students and 779,800 master students.

The number of undergraduate students enrolled was 4,679,400, an increase of 233,400 over the previous year, with an increase of 5.25%. In addition, there were 866,200 undergraduate students enrolled in junior colleges. There were 19,656,400 students in school, an increase of 725,400 over the previous year, an increase of 3.83%; There were 4,715,700 graduates, an increase of 434,700 or 10.15% over the previous year.

There are 76,300 vocational undergraduate students enrolled, an increase of 34,900 over the previous year, with an increase of 84.39%, and there are 33,100 undergraduate students enrolled from junior colleges. There were 228,700 students, an increase of 99,400 over the previous year, an increase of 76.91%.

The enrollment of higher vocational colleges (specialties) was 5,389,800 (excluding the enrollment of 542,900 people transferred from five-year higher vocational colleges to specialties), and the same diameter increased by 315,900 people, an increase of 6.23%; There were 16,709,000 students, an increase of 808,000 or 5.08% over the previous year; There were 4,947,700 graduates, an increase of 963,600 or 24.19% over the previous year.

Adult undergraduate enrollment was 4,400,200, an increase of 614,900 or 16.24% over the previous year; There were 9,336,500 students in school, an increase of 1,010,000 over the previous year, an increase of 12.13%; There were 3,300,700 graduates, an increase of 521,200 or 18.75% over the previous year.

The number of students enrolled in online colleges was 2,808,900, a decrease of 30,300 or 1.07% over the previous year. The number of students in school was 8,446,500, a decrease of 292,500 or 3.35% over the previous year; There were 2,618,900 graduates, an increase of 28,300 or 1.09% over the previous year.

The national self-study examination for higher education has registered for 3,984,100 person-times and obtained 361,700 graduation certificates.

There are 1,977,800 full-time teachers in higher education, including 1,315,800 in ordinary undergraduate schools; There are 27,800 vocational schools at the undergraduate level; There are 619,500 higher vocational (junior college) schools; There are 14,700 adult colleges and universities. The ratio of students to teachers is 17.65:1 in ordinary undergraduate schools, 18.31:1 in vocational schools at undergraduate level and 19.69:1 in higher vocational schools.

Ordinary and vocational colleges and universities have a total building area of 1,130,805,500 square meters, an increase of 43,132,600 square meters or 3.97% over the previous year. The per capita floor space is 51.63 square meters, the per capita school building area is 25.21 square meters, and the per capita teaching, research and practice equipment value is 17,527.82 yuan.

VII. Private education

There are 178,300 private schools at all levels in China, 7,451 fewer than the previous year, accounting for 34.37% of the total number of schools at all levels in China. There were 52,827,000 students, a decrease of 3,460,600 compared with the previous year, accounting for 18.05% of the total number of students at all levels in China. Among them:

There are 160,500 private kindergartens, a decrease of 6,213 compared with the previous year, accounting for 55.49% of the total number of kindergartens in China; There are 21,267,800 kindergarten children, a decrease of 1,852,500 compared with the previous year, accounting for 45.96% of the preschool children in China.

There were 10,500 private schools in compulsory education, 1,626 fewer than the previous year, accounting for 5.23% of the total number of schools in compulsory education in China. There were 13,568,500 students (including 7,363,700 government-purchased degrees), a decrease of 3,172,500 over the previous year.

4,300 private ordinary high schools, an increase of 292 over the previous year, accounting for 28.62% of the total number of ordinary high schools in China; There are 4,977,900 students, an increase of 474,500 over the previous year, accounting for 18.34% of the students in ordinary high schools in China.

There are 2073 private secondary vocational schools, an increase of 95 over the previous year, accounting for 28.79% of the total number of secondary vocational schools in China; There are 2,762,400 students, an increase of 86,100 over the previous year, accounting for 20.63% of the students in secondary vocational education in China.

There are 764 private colleges and universities, accounting for 25.36% of the total number of colleges and universities in China. Among them, there are 390 ordinary undergraduate schools; 22 vocational schools at the undergraduate level; 350 vocational (junior college) schools; 2 adult colleges and universities. There are 9,248,900 students in private general and vocational colleges, an increase of 791,500 over the previous year, accounting for 25.27% of the students in the national general and vocational colleges.

Is it shuffling or dying behind the closure of the first unmanned retail store in many places？

　　Unmanned retail, which was once popular with capital, kept coming out with news of closure. Some traditional stores have begun to use technology to enhance the consumer experience. The trend of the integration of new technology and retail is irreversible, but the digital transformation of retail should return to retail itself and pay attention to convenience and quality products.

　　At 11: 30 on December 27, 2019, a milk tea shop on the first floor of Zhonghai Plaza in Guanghua East, Chaoyang District, Beijing lined up, but an unmanned supermarket diagonally opposite was relatively deserted. At this time, it was originally the prime time for white-collar workers to eat and shop. In 20 minutes, only four people entered the supermarket to shop.

　　Unattended, "code" to go, big data to predict consumption habits, intelligent anti-theft identification system … … Many unmanned retailers blessed by new technologies debuted in 2017. Now, two years later, as the new favorite of the retail industry, the impression of unmanned retail to the outside world is still more at the technical level. Recently, news of the closure has been constantly coming out.

　　What is the current situation of this former tuyere industry, is it really unattended? Is it shuffling or dying behind the collapse? Where will the future go? The Workers’ Daily reporter investigated this.

　　The first unmanned retail store in many places closed down.

　　The unmanned supermarket located in Donghe Road, Xinqi, Ningbo, was the first unmanned supermarket in Beilun District. After seven months of operation, it closed at the end of November last year. Not only that, the first unmanned retail stores in Wuxi and Jinan also announced their closure.

　　The closure of the first unmanned retail store in many places has made the unmanned retail scenery with capital and technology in 2017 no longer.

　　In 2017, it was called "the first year of unmanned retail" by the industry. Unmanned shelves were placed on the streets of many cities overnight, and many unmanned supermarkets also opened their doors. However, the good times did not last long. In 2017, the first unmanned convenience store in Shanghai, Binguo Box, was closed. In February 2018, GOGO Xiaochao, an unmanned shelf project in Chengdu, was exposed and stopped. In April last year, Astor, an unmanned retail store in Xinhepu Road, Guangzhou, suddenly closed … … A large number of unmanned retailers have fallen.

　　According to media surveys, some unmanned supermarkets have even been directly changed into normal supermarkets, including many unmanned supermarkets under well-known e-commerce platforms.

　　No one is very fresh, convenience is more important.

　　With regard to the closure of unmanned retail stores, some insiders pointed out that consumers are more concerned about the comprehensive consumption experience than the automation of retail stores and the "sense of technology" in the shopping process. Compared with ordinary convenience stores, the current unmanned retail stores only have fewer clerks, and other aspects have not changed much. The core of unmanned retail should not be unmanned, but convenience and products.

　　On the evening of December 30, 2019, the reporter saw in an unmanned shelf outside a residential area in dingfuzhuang, Chaoyang District, Beijing that the yogurt sold on this shelf was more expensive than that of a nearby convenience store. "It’s hard to make people want to shop." A passerby said.

　　In addition, the technical problems of unmanned retail stores themselves sometimes bring consumers a bad consumption experience. The owner of the first unmanned retail store in Ningbo said that once the system delayed the update time, at 3 am, the machine didn’t respond, trapping consumers in the store.

　　In this regard, Xia Liu, an associate professor in the Marketing Department of Shandong University of Finance and Economics, said that unmanned retailing now has many problems and disadvantages. Although the labor cost is reduced, it will inevitably bring about an increase in operating costs. Moreover, in terms of loss of goods and technology, it has not been well solved.

　　In the eyes of some insiders, unmanned retail seems to have a certain cost advantage in terms of rent and labor, but from the actual situation, the overall operating cost is very high. The automatic identification equipment of goods in unmanned supermarkets and the operating system established by using artificial intelligence and big data require high investment in the early stage, and the maintenance cost in the later stage is not small.

　　The ebb tide of capital has dealt a fatal blow to unmanned retail. A venture capitalist said that investors gradually found that blind expansion of unmanned retail projects could not achieve a balance between scene fit, replenishment cost and user fit, and large-scale financing was difficult to sustain. Capital is gradually returning to rationality, and it is no longer foolish to invest money.

　　Many supermarkets and stores realize self-checkout

　　While the unmanned retail industry has closed down, some new unmanned retail stores are opening. New stores have opened in Hangzhou, Chuzhou and Lu ‘an.

　　In addition to completely unmanned retail stores, some traditional stores have also begun to use technology to enhance the consumer experience. Reporters visited stores such as CR Vanguard and Decathlon Sports Supermarket and found that self-checkout has gradually become the standard of these supermarkets. Cashiers in these supermarkets all said that they are happy to help consumers understand and try to use self-checkout

　　"If there is a long checkout line, self-checkout is still very convenient." A consumer shopping in a Decathlon sports supermarket in Chaoyang District, Beijing said. The reporter saw that consumers put the purchased goods into a shopping basket, and the product details and prices can be automatically displayed on the screen, and consumers can pay by scanning the code.

　　In this regard, some commentators pointed out that nowadays, the trend of new technology and retail integration is irreversible, and the life with more and more sense of science and technology is destined to accelerate. Unmanned supermarkets and unmanned shelves still have broad room for development.

　　According to the data of a consulting company, the market size of unmanned convenience stores in China reached 1.1 billion yuan in 2018 and is expected to reach 3.3 billion yuan in 2020.

　　Tang Jun, co-executive president of Shenzhen Internet of Things Intelligent Technology Application Association, wrote that unmanned convenience stores only blew the horn of digital transformation of traditional convenience stores. Only those who return retail to retail, return to the essence of retail and provide earth-shaking changes for retail efficiency and benefit can become the king of retail in the future.

China Wushu’s bid for the Olympic Games

　　　　At the end of 2006, after several efforts, the International Olympic Committee finally agreed to hold martial arts competitions during the Beijing Olympic Games. This special care given by the International Olympic Committee has never been seen before.


　　　　It is an unwritten tradition for the host country to use the power of the host country to incorporate its traditional projects into the Olympic Games. In 1960, judo was selected for the Olympic Games in Tokyo. In 1988, Taekwondo appeared in Seoul as a performance event, and finally became a formal event in 2000.


　　　　The success of Beijing’s bid for the Olympic Games in 2001 made many people see the dawn of Wushu entering the Olympic Games. Soon, the International Wushu Federation formally put forward to the International Olympic Committee the idea that Wushu should be included in the Olympic Games. For this purpose, the State General Administration of Sport has set up a "Wushu Leading Group for Entering the Olympic Games".


　　　　However, in August 2002, the working meeting of the Olympic Committee in Lausanne, Switzerland, rejected the proposal to include Wushu in the official Olympic events. According to Wang Xiaolin, the chairman of China Wushu Association, since the rule that the host set up a major event was abolished in 1996, Rogge has implemented the "slimming plan" since he took office, all of which have made the road of Wushu difficult. After 1988, the Olympic Games has cancelled performance events, which closed another door to the Olympic Games.


　　　　This sudden blow stunned Chinese Olympic Committee officials. The General Administration immediately ordered the working group to start emergency public relations work immediately.


　　　　In order to let IOC members know more about Wushu, the leading group has adopted a series of strong public relations. For example, during the meeting of the IOC Executive Committee, China organized a "Wushu Olympic Bid Group" with 56 members to Kuala Lumpur and hosted a banquet for the IOC Executive Committee and related personnel in the name of BOCOG. During the banquet, a martial arts performance was performed for about 30 minutes.


　　　　On the other hand, China keeps inviting IOC members to China to watch Wushu competitions. On August 9th this year, Rogge also went to Shaolin Temple to watch the martial arts performance of China national team.


　　　　After a lot of hard work and "at all costs", the International Olympic Committee no longer insisted on abolishing Wushu, and transferred the right to decide whether Wushu could be shortlisted for the Olympic Games to the Council of the Asian Olympic Committee. Only in this way can Wushu regain its vitality when it enters the Olympic Games.

Editor: Tian Shijia

Bo Huang’s film revolution： embracing change and taking root in the combination of life and innovation.

Recently, in an exclusive interview, Bo Huang profoundly pointed out that in the face of the great changes in China’s film market, only by embracing the changes can we find a foothold in the new opportunities. His thinking is not only related to personal creative development, but also reflects the fundamental problem that the whole industry needs to pay attention to during the transformation: how to closely connect with the people and inspire new value.

Bo Huang’s road to performing arts is full of persistence and exploration. From a small role to an actor with box office appeal, Bo Huang has always insisted on taking root in people’s lives. He emphasized that the audience’s love for him comes from their true feelings about life, not just numbers and box office. In today’s era of more and more attention to data, he believes that numbers do not represent the authenticity of creation, but may mislead creation.

For example, the "HB+U" new director assistance plan initiated by him is precisely to convey a spirit of courage to explore to the market. The plan shares the experience and resources accumulated by Bo Huang for many years with young creators, and supports their innovations in scripts and announcements. This kind of support not only pays attention to the box office, but also pays attention to the depth of innovation and art. In his recent works, from Enthusiasm to Across the Furious Sea, he constantly explores more possibilities with different roles, showing a fearless pursuit of performance.

Regarding the background of China’s film development, Bo Huang said that in the past ten years, the technology and creative means of China’s films have developed by leaps and bounds. When he recalled the difficult shooting conditions when he participated in the film Bullfighting, he can feel the rapid progress of the industry by comparing advanced shooting equipment and more professional technical team. He mentioned that the training of young actors by the "Feng Shen" crew showed the importance of actors’ performance and the pursuit of artistic quality, which made him feel the confidence and hope of the industry.

Of course, there are also challenges behind the change. Bo Huang mentioned that with the progress of science and technology, the rise of new technologies and platforms, and the change of viewing habits, the film industry is facing great challenges. The introduction of artificial intelligence technology may change many traditional links in the future, which indicates the endless possibilities of the industry in the future. Facing such a future, Bo Huang firmly believes that the initial intention of creation should not be forgotten, and the lasting way is to take root in the people’s values. He deeply understands that the vitality of movies comes from life, and the audience’s resonance is based on real reflection.

To sum up, Bo Huang is undoubtedly an innovative actor. In the ever-changing era, he told us with practical actions that embracing change is not contradictory to adhering to the original heart, but the wings that push art forward. Whether it is the exploration of personal development or the deep reflection on the whole industry, his series of practices are worth studying by every practitioner. In the days to come, Bo Huang will continue on the road of creation and explore more possibilities of her own.

Bo Huang is not only an actor, but also a thinker and innovator. With his rich experience and persistent exploration spirit, he showed us how to seize the opportunity and grasp the future in the complicated market environment. Let’s look forward to how he will continue to open up a broader sky for the future of China films.

Editor in charge:

Imported Lincoln Navigator Extended Edition Luxury Business Car for Sale

　　Tianjin Hailufeng Automotive Trading Co., Ltd. promises: We do not make the lowest price in the market, there is no guarantee if it is low, we do not make the highest price, and there is no emotion if it is high. We only earn the money we should earn. We only pay for the situation, work hard, cooperate for a win-win situation, and we cannot guarantee that you will spend the least money. I can guarantee that you will save the greatest heart, get quality, efficiency, benefits, and win-win situation. Looking forward to the cooperation of every new and old customer! Serve with heart and pass on trust! I am willing to cooperate with you for a long time!

　　[Tianjin Hailufeng 24-hour VIP contact number: 185-2258-3647 (same as WeChat) Manager Meng]

　　For customers from other places, make an appointment by phone in advance, and the company arranges free pick-up and drop-off of work vehicles (airports, high-speed rail stations, railway stations, light rail stations, bus stations and other locations) and other services.

　　[Tianjin Hailufeng 24-hour VIP contact number: 185-2258-3647 (same as WeChat) Manager Meng]

　　The 23 models have relatively flat lines on the side, and the silver-plated packaging around the body is more refined. Equipped with electric pedals and 22-inch aluminum alloy wheels at the bottom, the proportions of the body look very harmonious.

　　The interior of the 2023 Navigator is very luxurious, and the shape of the center console of the multi-function steering wheel echoes the wide body. The interior of the new car’s leather-wrapped seats is designed with mahogany, which is noble and elegant. In addition to increasing the interior space, the heightened and enlarged body also creates a feeling of dignity and elegance. The 2023 Lincoln Navigator new car adopts a 2 + 2 + 3 seat layout, and the second row adopts two independent seats. The inside of the seat is equipped with armrests for super comfort.

　　The seat pattern in the 2023 Lincoln Navigator compartment is a full-size SUV with seven seats of 2 + 2 + 3. Of course, there is no problem in space. It is not the content of the American car discussion, but the real thing to look at is the improvement of the material, and this time the interior is really a complete combination of solid wood and leather. In terms of workmanship, it obviously feels Japanese delicacy.

　　Company Name: Tianjin Hailufeng Automotive Trading Co., Ltd.

　　Company address: Tianjin Senyang International Automobile City, 1st Floor, Main Center

　　Contact information: 18522583647 (with WeChat) Manager Meng

　　[Suggestion: When consulting or buying parallel imported cars, please go through the bonded area International Automobile City to operate a regular car dealer to avoid being deceived]

　　Disclaimer: The above car purchase discount information is provided by the comprehensive dealer on this website. Due to market factors, the price fluctuates greatly, and it is only for car purchase reference. Its authenticity, accuracy and legality are the responsibility of the dealer. This website does not provide any guarantee and does not assume any legal responsibility.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　Sina Auto News On January 20, 2022, FAW (COROLLA CROSS) was officially launched. The new car is positioned as a compact SUV, between C-HR and RAV4. The new car is built on the TNGA-C platform, and the power will be equipped with a power combination of 2.0L + CVT. The new car will launch 5 models according to the configuration, and the price range is 12.98-16 9,800 yuan.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

FAW Toyota Corolla sharp release, guide price

Model

Selling price (10,000 yuan)

2.0L Pioneer Edition 12.98 2.0L Elite Edition 13.98 2.0L Deluxe Edition 14.98 2.0L Exclusive Edition 15.68 2.0L flagship version 16.98
FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　In terms of appearance, the new car follows the shape of the US version of COROLLA CROSS. The front face uses Toyota’s iconic large-size front grille to form the visual center of the front of the car, and the embedded blackened honeycomb grille adds a lot of sporty atmosphere. The surrounding shape is simple, and the word-through grille style is simple. It is made of black matte material to look a little tough, and there are also LED fog lamps on both sides.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　The overall outline of the headlight group is slender but rounded. Below a thick LED daytime running light is a light bulb that integrates far and near light. The visual effect after lighting is good.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　The side of the car body uses a lot of tough lines, the style is more cross-border and not sharp, and the thick black eyebrows will enhance the sporty atmosphere. In terms of body size, the length, width and height of the new car are 4460/1825/1620mm respectively, and the wheelbase is 2640mm.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　The style of the tail is very similar to that of the FAW Toyota RAV4 Rongfang, but it looks more rounded. The use of simple lines and the large black bumper below echo the front and rear of the front face, which also effectively enhances the cross-border atmosphere of the rear. The taillight group is also similar to the lamp group of the RAV4 Rongfang, but the shape has been adjusted. It adopts the same slender taillight shape as the headlight, using a halogen light source.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan
FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　The interior part also basically follows the same interior design and layout of the current Corolla, and there are two color schemes to choose from. The iconic LCD instrument panel + floating vertical central control screen also adopts a new three-frame multi-function steering wheel. The details are due to the SUV model, so the center console is raised as a whole, so a larger storage space is added to the lower part of the central control, which improves the practicality and makes the whole interior look more in line with the style of the crossover SUV.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　In terms of intelligent configuration, in the 9-inch multimedia screen of the high-end model, the Fengyun Zhixing interconnection system is equipped to realize the remote control of the mobile phone to the vehicle. It also supports up to 14 intelligent remote services such as car home interconnection, remote air conditioning, Yuexiang parking, Yuexiang refueling, and theft tracking. At the same time, the system also has built-in HiCar/Carplay/Carlife various smartphone interconnection functions, which can realize many popular functions such as online navigation, online audio and video, and Bluetooth music.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　In terms of safety configuration, the new car is also equipped with a TSS intelligent safety system, including lane departure warning, lane keeping, active braking, ACC adaptive cruise, 360 ° panoramic image, and adaptive near and far light.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　In terms of power, the FAW Toyota Corolla is equipped with a 2.0L naturally aspirated engine code-named M20E, with a maximum power of 171 horsepower and a maximum torque of 209 Nm. In terms of transmission, the engine is matched with a CVT continuously variable transmission.

FAW Toyota Corolla sharp release listed, priced 12.98-16 9,800 yuan

　　With the addition of Corolla Ruifang, FAW Toyota’s SUV family segment has become even stronger. Not only has it realized the transformation from large SUV to small SUV, but also formed an all-engine power product lineup including GAS, HEV, and EV, thus further meeting the diverse needs of users in the new era.

　　Judging from the price released, the main competitors of the new car are the joint venture brands such as T-ROC Tangge and Nissan Qashqai. However, with the development of independent brands, there are already many products with excellent product strength at the same price, and they will have more advantages in space and configuration. Therefore, Corolla Rui Fang still has no small challenge. So how does it actually perform in the market? Let’s wait and see!

The 79th China Educational Equipment Exhibition opened, and Programming Cat released an open ecosystem for programming education

　　

　　On April 24th, at the 79th China Education Equipment Exhibition, the leading brand of programming cat in the children’s programming industry launched the open ecology of programming education, opening the two ecosystems of tools and content for the whole industry, empowering the industry in an all-round way, and promoting the popularization of domestic programming education.

　　So far, Programming Cat has served more than 21,000 schools across the country and has nearly 600 offline cooperation centers, covering 34 provincial-level administrative regions and 343 prefecture-level cities in China.

　　Li Tianchi, founder and CEO of Programming Cat, said that Programming Cat has accumulated profound technical and content strength in the field of programming education in the past. We hope that through open cooperation and co-creation, we can help more users, public schools, and social institutions better develop programming education based on these achievements of Programming Cat, work together to build a programming education ecosystem, and better improve the scientific and technological literacy of the next generation.

　　"Programming Tools + Content" Open ecological double helix, deeply empowering the industry in all directions

　　The open ecosystem of Programming Cat Education includes two major ecosystems of tools and content, helping users and partners to use Programming Cat’s tools and content more conveniently and efficiently; at the same time, it is necessary to join hands with multiple parties to create and build an open ecosystem.

　　　

　　

　　Newly released programming tool matrix, free to use forever

　　At present, Programming Cat has built a matrix of programming tools for teenagers aged 4-16, including Little Rocket Toddler Programming Roki, Source Code Editor Kitten, Mobile End Programming Tool Programming Cat Nemo, Turtle Editor Turtle, Code Island Box, etc. This time, Programming Cat will fully open the programming tool matrix, and launch two new hardware programming tools, Maker IDE, a graphical hardware programming tool, and Cat: Bit, a programmable main control board. So far, the tool matrix has fully opened up software and hardware applications, covering all stages of children, primary schools, and middle schools, and realizing multi-scene coverage on the PC side and mobile end.

　　The programming cat tool ecosystem has three major highlights: first, the tool is permanently free, and all programming tools released this time will be permanently open to users for free use; second, the access ability is open, and the programming building block definition ability and hardware access ability are fully open; third, multi-person collaborative editing, and the follow-up will continue to develop and support multi-person online collaborative editing functions, allowing multiple people to jointly create a work.

　　Therefore, the release of the programming cat tool ecosystem maximizes the synergy effect of the tool matrix, on the one hand, it makes the user’s programming learning path more convenient, and meets the needs of multiple ages and scenarios. On the other hand, it also allows the industry to develop programming education based on the existing complete infrastructure, providing acceleration for the popularization of domestic programming education.

　　Open and shared high-quality content to create and build a programming education content ecosystem

　　Poor course content and lack of system are common problems facing the development of domestic programming education. Programming Cat has formed a "textbook + book magazine + IP" content moat matrix with "academic leadership teaching and research", and has accumulated more than 1,600 copyrights. It has won the "Shenzhen royalty fee award" for three consecutive years.

　　This time, the Programming Cat content ecosystem will open up textbooks, teaching content, books and magazines, and the Programming Cat community to the industry to achieve high-quality content sharing. "Co-creation and co-construction" is a major highlight of this content ecosystem.

　　On the one hand, Programming Cat will cooperate with publishing houses, colleges and universities, teachers and individual authors to create high-quality content; and encourage content creation based on programming tools such as the source code editor Kitten; at the same time, information technology teachers across the country can co-create and share programming teaching and research content in the programming teaching platform to achieve the perfect integration of teachers’ first-line teaching experience and teaching and research, and build a content creation platform through multiple channels to achieve the co-creation and co-construction of programming education content.

　　Programming Cat Community is a free graphical programming platform designed for users. Children can create novels, comics, and develop Mini Programs, etc., teach and learn, and gain from each other. It has accumulated tens of millions of users. As part of the open content ecosystem, this community will further promote the creation of a new student-centered education model in the future.

　　Unite multiple parties to build an open ecosystem and escort the popularization of programming education

　　As an innovative educational technology enterprise, Programming Cat adheres to technology-driven educational innovation and independently develops free domestic programming tool matrices and content covering all age groups. The release of this programming education open ecosystem is based on its strong technological innovation advantages, top academic achievements and teaching and research achievements.

　　Li Haiming, an information technology teacher at Xiyuan Primary School in Qingzhou City, Shandong Province, said that the release of the open ecology of programming cat programming education will enrich and improve the ecology of programming education, which will greatly help public schools like Xiyuan Primary School to carry out programming education. It can also stimulate teachers’ creative enthusiasm, allowing more children to be exposed to cutting-edge technologies earlier, and contributing to educational equity.

　　In the future, Programming Cat will also build an open ecosystem with the participation of users, partners, and developers based on the open ecosystem of programming education, and ultimately achieve the goal of enabling the whole society to use a complete programming education infrastructure to achieve better education.

Interview with satellite positioning experts： centimeter-level positioning, how big a sky can the quasi-zenith top？

　　Chen Chao, correspondent of Science and Technology Daily in Japan

　　Not long ago, Japan launched the fourth Quasi-Zenith System (QZSS) "Pathfinder" 4 satellite that can be used for satellite navigation and positioning, and its announced centimeter-level positioning accuracy has attracted widespread attention. Regarding the latest progress of Quasi-Zenith satellites, a reporter from Science and Technology Daily interviewed satellite positioning expert Liu Zhixing, a visiting professor at York University in Canada.

　　Three characteristics of quasi-zenith system

　　Liu Zhixing first introduced that the quasi-zenith system has three satellites in tilt-synchronous orbit working over Japan, rotating alternately for 8 hours, so as to ensure that a satellite with a higher elevation angle is on duty in Japan’s "zenith" at any time, which makes it possible for this satellite, which will not be blocked, to "supplement" GPS’s positioning ability in harsh environments in urban centers and valleys. The successful launch of the No. 4 satellite will, together with the three satellites launched before, form a regional satellite navigation and positioning assistance enhancement system that can cover Japan and the surrounding area. Now Quasi-zenith is in the practice run stage. It will officially provide services to Japan and surrounding areas in 2018, and increase to seven satellites in 2023. It is possible to expand into a regional navigation system that does not rely on GPS and operates independently.

　　Secondly, the positioning accuracy is enhanced. Quasi-Zenith satellites provide two GPS enhancement signals: L1S and L1Sb (starting to provide SBAS satellite-based enhancement services in 2020) can provide sub-meter-level positioning accuracy enhancement services, enabling users in Japan to improve their positioning accuracy from 10 meters when relying only on GPS to about 1 meter; the other is centimeter-level enhancement signal L6, including L6D and L6E, which can perform precise single-point positioning.

　　Finally, the quasi-zenith system can also provide warning services, including disaster warnings such as earthquakes and tsunamis; when GPS satellites are abnormal, users can also be notified in time to avoid wrong positioning.

　　Positioning accuracy up to 6 cm

　　According to Japanese media reports, the positioning accuracy of the quasi-zenith system can reach 6 cm after the deployment of the first phase, including three tilt-synchronous orbit satellites and one geosynchronous orbit satellite. What technology is used to achieve this order of magnitude difference?

　　Liu Zhixing explained that the centimeter-level positioning accuracy that the quasi-zenith satellite navigation system can achieve is achieved by the enhancement of GPS by the L6 signal. The precision single-point positioning provided by it is a key technology for achieving global precision real-time dynamic positioning and navigation. It is also a cutting-edge research direction in global navigation satellite system (GNSS) positioning, but it is not unique to Japan. In application, the L6 signal is not compatible with GPS signals, and special receivers and antennas are required for reception. It can be used in high-precision measurement, high-precision construction of construction machinery, and IT precision agriculture. Due to the large size of the antenna and receiver, it cannot be compared with mobile end points such as mobile phones. At this stage, it can only be used for measuring instruments and vehicles.

　　Quasi-Zenith Technical Advantages and Controversies

　　By 2023, when the number of Quasi-Zenith satellites reaches 7, it will have the ability to work independently from the GPS system and become Japan’s regional satellite navigation system. This process provides an in-orbit platform for testing and demonstration, which will greatly promote Japan’s independent research and development capabilities in the field of satellite navigation. However, in terms of applications, some media have pointed out that because Quasi-Zenith is a regional system, it cannot be popularized and may fall into a vicious circle of evolution alone.

　　Liu Zhixing said that the quasi-zenith system is not globally oriented, and only receivers that can be used in and around Japan cannot guarantee the market scale. Although the field of autonomous driving is one of the application hotspots of high-precision positioning, due to the positioning time and the delay of satellite channel transmission, it can only be used as an auxiliary of other sensors at this stage, and the Japanese business community has not responded very enthusiastically. However, looking to the future, in the fourth stage of autonomous driving, that is, the driving stage dominated by artificial intelligence, the absolute position of centimeter-level accuracy is very necessary. Assuming that the mass production price of L6 corresponding to high-precision chips can reach less than 1,000 yen by then, which is better than the relative positioning sensors such as cameras and LIDAR that are currently relied on for autonomous driving, then the quasi-zenith system may have some competitiveness.

　　Beidou is a complete global satellite navigation system

　　Liu Zhixing concluded by saying that China’s Beidou satellite navigation system is starting global construction, and the construction of the enhancement system is also underway. In terms of space-based enhancement, recently, at the fourth meeting of the ICAO Navigation System Expert Group, the Beidou Satellite-based Augmentation System (BDSBAS) was officially awarded the SBAS system supplier ID and system time ID. BDSBAS became the sixth satellite-based augmentation satellite navigation system in the world, providing sub-meter-level services for aviation applications. In addition, Hezhong Sytron has been developing the centimeter-level Beidou satellite-based augmentation system since 2013. We can collectively expect "Chinese precision".

　　(Science and Technology Daily, Tokyo, November 9)

From dangerous goods to safe endurance, they have created a rechargeable world.

　　When going out, only one thing is allowed, and many people will choose mobile phones; To buy your first car, you may want to try a new energy electric car & HELIP; …

　　These common choices in our daily life all exist because of the same thing — — Lithium battery.

　　At 17: 45 Beijing time yesterday, the Royal Swedish Academy of Sciences announced that the 2019 Nobel Prize in Chemistry was awarded to Professor John B Goodenough, Professor Stanley Whittingham and Professor Yoshino in recognition of their contributions to the development of lithium batteries.

　　The Nobel Prize in Chemistry once again makes people feel that they have flown from the top of the academic pyramid to ordinary people. The distance is so close, even within reach.

　　With the lightest metal in the world

　　Win the heaviest prize in the world

　　When the power of your mobile phone is only 10%, I believe that many people’s anxiety and tension have reached the peak. At this time, if you suddenly find a charging treasure, it seems that life has been saved at that moment.

　　Modern people can’t imagine life without the assistance of lithium batteries.

　　Therefore, when the Royal Swedish Academy of Sciences awarded the 2019 Nobel Prize in Chemistry to three scientists from the United States, Britain and Japan who made outstanding contributions to the development of lithium batteries, people at the scene were extremely interested in it.

　　Lithium, the least dense and lightest metal in the world.

　　Although it is light and small, it has a big temper — — It is the most active metal among known elements (including radioactive elements).

　　Therefore, it has become a very good material for developing batteries, but it has both advantages and disadvantages. When lithium metal is used as the electrode, there are huge hidden dangers — — This kind of battery is easy to catch fire or even explode.

　　Therefore, if you want to use lithium in the battery, you must control it, and this year’s Nobel Prize winner in chemistry’s achievement actually lies in this.

　　In other words, if these three scientists didn’t make Li obedient, we would be carrying an explosive bag every day and risking being ignited at any time by calling the Internet.

　　So, how did they tame lithium?

　　Originally, Goodenough and others found that manganese spinel is an excellent cathode material with low price, stability and excellent electrical and lithium conductivity. Its decomposition temperature is high, and its oxidation is much lower than that of lithium metal. Even if there is short circuit and overcharge, the danger of combustion and explosion can be avoided.

　　Now, let’s imagine lithium cobaltate, and imagine it as a sandwich made of cobalt and oxygen. The lithium atom is the ham slice in the middle, which can be easily pulled out, so that the lithium atom can move quickly in the lithium cobaltate crystal — — Therefore, lithium cobaltate can replace metallic lithium as a lithium ion provider in the battery.

　　At the same time, this oxide can also increase the voltage of the battery and the amount of electricity stored in the battery. More importantly, it is like putting a spell on lithium, making it docile and controllable.

　　Liberal arts cross science and physics cross chemistry.

　　Hard core life of 97-year-old father

　　After briefly talking about the principle of lithium batteries, let’s talk about these three award-winning legends.

　　At the age of 97, Goodenough is the oldest Nobel Prize winner so far.

　　The old man’s life is quite hard — — After Goodenough was admitted to Yale University, he actually chose classical literature and philosophy as his first major. In order to get credit, he took two chemistry courses. When he graduated, his degree turned out to be a bachelor of mathematics. Because a math professor saw his talent, he was persuaded from a liberal arts student to a science student studying mathematics.

　　Then, World War II broke out, and Goodenough joined the US Air Force. After retiring, at the age of 30, he went to the University of Chicago to study physics, and studied solid-state physics. After graduation, he went to Lincoln Laboratory of MIT and made contributions to the development of random access memory. This technology is the later computer memory.

　　This wave of cross-border is not over yet — — In Lincoln Lab, Goodenough studied sodium-sulfur batteries. But it was not until 1976, at the age of 54, that he entered the Department of Chemistry of Oxford University in England, and his research field shifted to batteries, and he studied lithium cobaltate.

　　That is, when Goodenough went to Oxford University, England, Whitingham, the founder of rechargeable lithium-ion battery, and his team had made the world’s first rechargeable lithium-ion battery — — They creatively used titanium sulfide as the cathode material and lithium metal as the cathode material. When charging, lithium ions move from the positive electrode to the negative electrode, and the discharge returns to the positive electrode, and so on.

　　In 1977, the two high-energy scientists also co-published a book in the field of solid-state energy chemistry.

　　On the other side of the globe, some Japanese companies, especially Sony, had made great progress in the commercialization of lithium rechargeable batteries and held a large number of patents.

　　Akira Yoshino, after graduating from the Petrochemical Department of the Faculty of Engineering of Kyoto University with a master’s degree in engineering, directly entered Asahi Kasei Industrial Co., Ltd. In 1981, the research and development of lithium batteries began.

　　He plays the role of matchmaker — — After establishing the basic framework of lithium-ion batteries, Yoshino made use of graphite, which has been invented by Sony Corporation of Japan and is used as the negative electrode of lithium batteries, with stable structure and low price, to draw a red line for lithium cobaltate as the positive electrode.

　　In 1983, Yoshino made the world’s first rechargeable lithium-ion battery prototype by using lithium cobaltate cathode and polyacetylene anode. In 1985, many technical problems were overcome, metal lithium was completely eliminated, and the basic concept of rechargeable lithium-containing alkaline lithium-ion battery was established, and modern lithium-ion battery was born. In 1991, Sony released the first commercial lithium-ion battery in human history.

　　"I’m only in my 90 s and I still have time."

　　Three scientists are still working at an advanced age.

　　Although the principle of the battery looks simple, the design and manufacturing process of the battery is very complicated. Until now, some alkaline batteries invented in the 19th century are still in use. It can be seen how difficult it is to invent and improve a new battery.

　　This award is well deserved.

　　In the "Nobel Prize" field, Goodenough is somewhat known as "Haruki Murakami" in the chemical field — — The voice is very high, "running with you" for many years.

　　It is understood that 97-year-old Goodenough is still engaged in energy research.

　　"I want to solve this problem before I die. I am only in my 90 s and I still have time." Goodenough hopes to develop solid-state batteries with high energy density and high safety, so that electric vehicles can replace high-capacity batteries of gasoline vehicles. He likes his metaphor of "crawling tortoise". "This kind of crawling throughout your life may bring benefits, especially if you cross different fields and collect all kinds of clues all the way. You have to have a lot of experience to integrate different ideas. "

　　Whitingham, 78, is still thinking and working. He has also co-written books to observe and analyze the history, evolution and future state of energy storage, which describes the future development of lithium batteries.

　　Just after being told that he won the Nobel Prize in Chemistry, 71-year-old Akira Yoshino replied in an interview with the media: "Curiosity" is the biggest driving force. Prior to this, Akira Yoshino said that battery technology is a complex and difficult interdisciplinary field, and its development needs many experts. Lithium-ion batteries are the result of collective wisdom.