作者： admin

One-week inventory ｜ Alibaba’s US stocks fell by 2.01% last week, and Hong Kong stocks rose by 0.23%

[trend of individual stocks]

24-28 March

Last week, the S&P 500 fell 1.53%, the Nasdaq Composite Index fell 2.59% and the Dow Jones Industrial Average fell 0.96%.

Alibaba’s US stocks fell 2.01% last week.Last week, the total turnover was $10.45 billion. As of last week’s close, the US stock price was $132.43. The cumulative monthly decline of US share capital is 0.06%, the cumulative increase this year is 56.19%, and the cumulative increase in the past 52 weeks is 83.02%.

Last week, the Hang Seng Index fell by 1.11% and the Hang Seng Technology Index fell by 2.36%.

Alibaba -W Hong Kong stocks rose 0.23% last week.Last week, the total turnover was 49.839 billion Hong Kong dollars. As of last week’s close, the stock price of Hong Kong stocks was 131.00 Hong Kong dollars, with a market value of 2.49 trillion Hong Kong dollars. Hong Kong stocks rose 2.75% this month, 58.98% this year and 86.48% in the last 52 weeks.

[Company comparison]

Securities code Securities abbreviation Latest price Last week’s ups and downs Up and down this month Up and down this year 52-week ups and downs EBAY eBay $67.16 2.1% 3.74% 8.41% 27.25% VIPS Vipshop $16.13 -0.98% 2.61% 19.75% -2.54% JD JD.com $41.58 -1.56% -0.76% 19.93% 51.81% AMZN Amazon $192.72 -1.78% -9.21% -12.16% 6.84% BABA Alibaba $132.43 -2.01% -0.06% 56.19% 83.02% PDD Pinduoduo $120.45 -4.89% 5.95% 24.19% 3.61% BZUN Bao Zun Dian Shang $2.80 -6.67% -11.95% 2.94% 21.74% 06808 Gaoxin retail 1.89 hong kong dollars 2.72% 6.18% -23.79% 21.15% 09618 JD.COM Group -SW HK$ 164.40 0.92% 2.37% 20.88% 52.36% 09988 Alibaba -W HK$ 131.00 0.23% 2.75% 58.98% 86.48% 00493 Gome retail 0.02 Hong Kong dollars -5.56% -10.53% -15% -5.56% 09991 Bao Zun Dian Shang -W HK$ 7.50 -7.18% -7.98% 1.49% 25.42%

[Related News]

Longhu Group and Ant Group reached a strategic cooperation to explore the new experience of "touch" service.

Longhu Group and Ant Group signed a strategic cooperation agreement, and the two parties will devote themselves to exploring the innovative application of Alipay’s "touch" technology in business scenarios. In the future, Longhu Group will gradually launch "touch" payment and digital services in Longhu Tianjie Shopping Center nationwide, and consumers can complete safe and convenient payment only by lightly touching the device without opening Alipay APP. (People’s Financial News)

Xingji Meizu will release Meizu Note 16 series and access the Alibaba Cloud model.

Liao Qinghong, chief operating officer of Xingji Meizu, announced that Meizu Note 16 series will be released in April and a national appointment will be opened. Meizu 22 series is scheduled to be released this summer. At the same time, the cooperation between Xingji Meizu and Alibaba Cloud has been upgraded, and it has become the first mobile phone manufacturer to deeply access the Qwen2.5-Omni model, so as to improve the AI emotion understanding and complex task processing ability. (Interface News)

Alibaba Cloud released the end-to-end multi-modal AI model Qwen2.5-Omni-7B.

Alibaba Cloud released Qwen2.5-Omni-7B, the first end-to-end full-modal large model of Tongyi family. The model is specially designed for full-modal perception, which can handle multimodal inputs such as text, images, audio and video, and generate text and natural language responses in real time, setting a new standard for deploying multimodal AI in terminal devices such as mobile phones and notebook computers. Although only 7B parameters are lightweight, Qwen2.5-Omni-7B still shows excellent performance and powerful multi-modal ability, and becomes an ideal base model for developing AI agents with high efficiency, high cost performance and valuable use, especially in the field of intelligent voice applications. For example, real-time voice navigation can help the visually impaired to identify the surrounding environment safely, analyze the ingredients in the video to provide cooking guidance step by step, and create an intelligent customer service dialogue experience that truly understands the needs of customers. The model is now open source on Hugging Face and GitHub, and can be obtained through Qwen Chat and Alibaba Cloud open source community ModelScope. At present, Alibaba Cloud has opened more than 200 generative AI models. (Alibaba Cloud)

Taobao: Severely crack down on illegal behaviors such as using AI fake pictures to deceive consumers.

Taotian Group issued a document saying that starting from today, Taobao launched the AI ? ? fake map governance on the whole platform, and severely cracked down on the violations of using AI fake maps to deceive consumers and infringe on original brand businesses. Taobao stipulates that the product pictures should be reflected by the actual pictures of the products as the core effect, and the modification behavior should be moderate to avoid distortion. It is strictly forbidden to use AI and other technical synthesis methods to present a significantly distorted product information renderings that are inconsistent with the actual situation.

Taobao: This year, the investment in user growth has doubled, and the first-time consumers have increased several times in March.

Chu Duan, vice president of Alibaba Group and president of Taobao Platform Division, said at the 2025 Tmall Super Brand Private Sharing Meeting held on March 26 that the average daily first-time consumers of Taobao Tmall platform increased several times compared with the same period of last year in the first three months of 2025. Under the high user growth rate, Taobao Tmall will strengthen its support for businesses with good creativity and good service. In order to bring more consumers, the investment of Taobao Tmall platform for user growth this year will double compared with last year. (People’s Financial News)

Star map Wei Tianxin and Gaode map reached in-depth cooperation

Recently, Zhongke Xingtu WeiTianxin Technology Co., Ltd. (referred to as "Xingtu WeiTianxin") officially reached an in-depth cooperation with Gaode Map. Xingtu WeiTianxin uses meteorological technology to empower smart travel in new scenes, and deeply integrates the self-developed eTAPES Super-Grider Tianxin high-precision intelligent weather grid system into the navigation scene of Gaode Map APP, providing users with a more accurate and practical navigation experience and opening a new era of high-precision weather forecast navigation. In the future, Xingtu Weixin will further expand the cooperation field with Gaode Map, and plans to carry out in-depth cooperation in AI model forecasting and social observation to further realize "local accurate" weather forecasting. (People’s Financial News)

Vice President of Xiaomi Group: The monthly sales of Xiaomi 15 Ultra in Tmall increased by 50% compared with the previous generation.

Wang Xiaoyan, vice president of Xiaomi Group and president of China District, revealed at the exclusive meeting of Tmall 2025 TopTalk Super Brand that this year, Tmall has increased its investment in new product resources, and the support programs such as homepage recommendation, search weighting and live broadcast subsidy have accelerated the growth cycle of new products. It is understood that under the double blessing of Tmall brand potential and national subsidy policy, in the first quarter of 2025, Xiaomi increased by 50% year-on-year in Tmall, hitting a record high. Xiaomi 15 Ultra’s first transaction in Tmall exceeded 100 million, winning the first new product transaction, and the monthly sales volume of Tmall’s first sales increased by 50% compared with the previous generation. (36Kr)

() Sign a strategic cooperation agreement with Alibaba.

On March 26th, China Mobile and Alibaba held a signing ceremony of strategic cooperation agreement in Beijing. Yang Jie, Chairman of China Mobile, and Wu Yongming, CEO of Alibaba attended the signing ceremony. Chen Huaida, Deputy General Manager of China Mobile, and Wen Jia, President of Alibaba Public Affairs signed the agreement on behalf of both parties. According to the agreement, the two sides will carry out in-depth cooperation in digital infrastructure, application ecology, science and technology innovation capability and international business, jointly build and operate advanced AI data centers, help both sides improve the scale and efficiency of cloud computing and AI services, deepen the technical exchange and ecological co-construction of China Mobile’s "Nine Days" and Alibaba’s "Tongyi Qianwen" AI models, and promote the deep integration of AI with various industries to create greater industrial value. The signing of this contract marks a new stage of comprehensive strategic cooperation between the two sides. The two sides will build a new ecology of AI industry based on new potential energy such as cloud, computing power and large model. (People’s Financial News)

Last year, Tmall sold more than 4,100 brands, and in 2025, it will fully invest in big growth.

On March 26th, Tmall announced the latest business strategy in 2025: fully support high-quality brands and original brands, fully liberalize the incentive policies, and expand brand growth. Tmall also disclosed that the current number of active buyers in Amoy reached 1 billion. In addition, in 2024, more than 4,100 brands broke through the platform, an increase of 18% year-on-year; There are 34,000 super items with a turnover of over 10 million. Last year, the annual active buyers of Taobao Live increased by 38% year-on-year. (Interface News)

Alibaba and BMW reach AI cooperation.

It is reported today that BMW and Alibaba will deepen AI cooperation, and ali tong Yida model will be applied to BMW’s new generation series in China market. The two sides have no response to this. (Sina Technology)

Strategic adjustment of Ant Group: reducing traditional investment and increasing AI layout.

According to Sina science and technology news, Ant Group recently reduced its holdings of Obi Zhongguanghe (), and accumulated a return on investment of over 775 million yuan, which attracted market attention. This reduction is based on the adjustment of strategic direction, and ants turn their funds to cutting-edge scientific and technological fields such as artificial intelligence to support a new generation of scientific and technological innovation. Ant’s investment strategy is still oriented to the company’s strategy, focusing on AI big model, AI computing power, embodied intelligence and other directions, and has invested in a number of related enterprises. Ant emphasizes that it has a long holding period, pays attention to ecological synergy, promotes technological innovation through investment, and creates more value for society.

Zhejiang Provincial Government signed strategic cooperation agreements with Alibaba Group and Ant Group.

On the afternoon of 25th, Zhejiang Provincial Government signed a strategic cooperation agreement with Alibaba Group and Ant Group. Governor Liu Jie witnessed the signing of the contract with Cai Chongxin, Chairman of the Board of Directors of Alibaba Group, and Jing Xiandong, Chairman of Ant Group. According to the agreement, the provincial government, Alibaba Group and Ant Group will closely focus on "taking high-quality development as the primary task, narrowing the’ three major gaps’ as the main direction, taking reform and innovation as the fundamental driving force, and meeting people’s needs for a better life as the fundamental purpose", further integrate resources and work closely together to promote the healthy development of the platform economy, cooperate in artificial intelligence and other fields, better serve the Chinese-style modern provincial practice, and jointly promote the implementation of major national strategies. On behalf of the provincial government, Vice Governor lu shan successively signed agreements with Wu Yongming, CEO of Alibaba Group, and Han Xinyi, CEO of Ant Group. (Tide News)

Alibaba Cloud opened the largest campus recruitment of AI talents in recent years.

The reporter learned that Alibaba Cloud recently recruited AI technology reserve talents in the top universities in the world, and recruited the largest AI talent campus in recent years. It is understood that this recruitment is aimed at top universities in the world, such as Tsinghua University, Peking University, Zhejiang University, Massachusetts Institute of Technology and Stanford University, and recruits technical talents in the fields of large language model, multimodal understanding and generation, model application and AI Infra. At the same time, the project sets up the A Star project and the Al Clouder project, which are aimed at top talents with high-level papers and the influence of open source projects, and provide better salary and professional support for such graduates. This move is another AI talent strategy launched by Alibaba after the previous T project. (science and technology innovation board Daily)

Alibaba Cai Chongxin: I began to see a bubble in the construction of artificial intelligence data centers.

Cai Chongxin, chairman of Alibaba, said that he began to see the emergence of a bubble in the construction of artificial intelligence data centers, and many data center investment announcements in the United States were "repeated" or overlapped. He also said that the number of employees in Alibaba has bottomed out and will be "restarted and re-recruited", and the company will provide reasonable returns to shareholders through dividends. (Sina Finance)

Ant Group has introduced a new MoE language model, which uses domestic AI chips to train, and its performance is equivalent to that of completely using NVIDIA chips, dense models of the same scale and MoE models.

Recently, the Ling team of Ant Group published a technical achievement paper. The paper shows that Ant Group has launched two MoE large language models with different scales-Ling-Lite and Ling-Plus. The former has a parameter scale of 16.8 billion (activation parameter of 2.75 billion) and the Plus base model has a parameter scale of 290 billion (activation parameter of 28.8 billion), both of which have reached the leading level in the industry. In addition to the self-developed large model with leading performance, the biggest breakthrough of this technical paper is to propose a series of innovative methods to improve the efficiency and accessibility of AI development in a resource-limited environment. Experiments show that its 300-billion-parameter MoE (Hybrid Expert) model can complete efficient training on low-performance equipment using domestic GPU, and its performance is equivalent to that of NVIDIA chip, dense model of the same scale and MoE model. (science and technology innovation board Daily)

Ant Group launched two MoE language models with different scales, and the training cost was further reduced by using domestic AI chips.

Recently, the Ling team of Ant Group published a technical achievement paper. The paper shows that Ant Group has launched two MoE large language models with different scales-Ling-Lite and Ling-Plus. The former has a parameter scale of 16.8 billion (activation parameter of 2.75 billion) and the Plus base model has a parameter scale of 290 billion (activation parameter of 28.8 billion), both of which have reached the leading level in the industry. In addition to the self-developed large model with leading performance, the biggest breakthrough of this technical paper is to propose a series of innovative methods to improve the efficiency and accessibility of AI development in a resource-limited environment. Experiments show that its 300-billion-parameter MoE (Hybrid Expert) model can complete efficient training on low-performance equipment using domestic GPU, and its performance is equivalent to that of NVIDIA chip, dense model of the same scale and MoE model. (Securities Times)

[US stock rating]

On March 28th, Mizuho rated Alibaba as outperforming the market with a target price of $170.00.

This article comes from the theme of Hong Kong-US Datalink. Click to read more about Hong Kong-US companies > > >

Maoming, Guangdong issued the first flood red warning this year.

　　CCTV News:According to "Maoming released" WeChat WeChat official account news, affected by Typhoon Sanba and weak cold air, from October 19th to 20th, there was a large-scale rainstorm to a heavy rainstorm in Maoming. Maoming Hydrological Branch decided to upgrade the level IV emergency response of flood control hydrological forecasting to level III emergency response of flood control hydrological forecasting from 2: 00 on October 20th, further strengthen the duty on duty, and continuously do a good job in water and rain monitoring, forecasting and early warning.

　　Affected by continuous rainfall, the water level of rivers in Maoming area generally rose. According to the current water and rain situation and the future rainfall trend, Maoming Hydrological Branch has successively issued flood warnings for many rivers. Among them, Maoming Station of Xiaodongjiang is expected to reach the flood level of 12.5 meters, with the warning level exceeding 3.5 meters. Changshanyuan Station, Chejiaoshan Station and Baishacun Station along the river all exceed the warning level by more than 1 meter. The water level of Shatian Station of Shatian River in Gaozhou City has risen sharply, and it is expected that the warning level will exceed 3 meters, which may lead to dike overflow and dike break. Maoming Hydrological Branch issued the first red flood warning this year at 3: 00 on October 20th. In addition, Shatian River and Rudong River issued red flood warnings, Meihuajiang and Jianjiang issued orange flood warnings, Luojiang and Pingdingshui issued yellow flood warnings, and Caojiang, Xindong River, Huanghua River and Qianpai River issued blue flood warnings.

　　Maoming Hydrological Branch will closely monitor the water and rain conditions, provide accurate hydrological information forecast to relevant departments in time, provide scientific basis for flood control and disaster relief decision-making, and send information to remind relevant units along the river and the public to pay attention to dike safety and do a good job in defense, risk avoidance and disaster reduction.

Jiangling Fushun picked up the car for one month and the brakes failed, and the engine oil leaked for half a year. How did the quality checkpoint pass？

In today’s increasingly prosperous automobile market, consumers have high expectations for the quality and safety of automobiles. Recently, however, the quality problem of Jiangling Fushun has been greatly questioned by the owner.

In the complaint case of the automobile complaint network, we can see the worrying quality hidden trouble of Jiangling Fushun. Mr. Lu, the owner of the car, bought Jiangling Fushun on April 27, 2024, but within a short month of picking up the car, the brakes actually failed twice. As a key component of automobile safety, the importance of brake system is self-evident. Brake failure may lead to serious traffic accidents, endangering the safety of passengers in the car and other pedestrians and vehicles on the road. This is an unacceptable quality defect for a new car that has just been bought for a long time.

IMG_256

Not only that, but in less than half a year after picking up the car, the vehicle also leaked oil. As the heart of an automobile, the normal use and sealing of engine oil are very important. Oil leakage will not only affect the performance and life of the engine, but also cause fire and other safety hazards. These problems faced by Mr. Lu, the owner of the vehicle, are by no means accidental faults, but involve serious quality problems of the core components of the vehicle.

IMG_256

For such quality problems, the owner’s appeal is to ask the 4S shop or manufacturer to make a way to return the car. As a commodity, car owners have invested a lot of money and trust in the purchase. When the vehicle has such serious quality problems, the owner has the right to ask the manufacturers and dealers to give reasonable solutions. However, as of the date of publication, the problem of car owners’ demands has not been properly solved.

As a well-known automobile brand, Jiangling should have a higher standard and guarantee for its product quality. These problems in Jiangling Fushun make people question the production technology and quality control system of Jiangling. In the process of automobile production, the design, manufacture and testing of brake system and engine should be strictly checked. Why do these serious problems appear on a new car? Is the quality of the parts not up to standard, or is there a mistake in the production and assembly process? Or is there a loophole in the inspection link before the vehicle leaves the factory?

Nowadays, there are many automobile brands, and car owners often consider many factors such as brand reputation, vehicle performance, quality and after-sales service when choosing. Jiangling Fushun’s brake failure and oil leakage will undoubtedly have a negative impact on its brand image. Car owners may have doubts about other models of Jiangling brand because they are worried about quality problems, and then turn to other competitive brands. This is a problem that needs to be paid attention to and solved for Jiangling.

Click to view the image source.

For the owner, Mr. Lu, buying a car with quality problems not only brings economic losses, but also may cause a lot of inconvenience to life and work. In the factory where Mr. Lu is located, drivers are afraid to continue driving because of vehicle quality problems, which will inevitably affect the normal operation of the factory. For other potential car owners, such a case has also played a warning role, and it is necessary to choose brands and models more carefully when buying a car.

Car complaint network:

The quality problem of Jiangling Fushun should be highly valued by manufacturers. Manufacturers need to actively communicate with car owners, thoroughly investigate the causes of the problems and take effective measures to solve the problems. Only in this way can we regain the trust of car owners and maintain the reputation of the brand.

In the 1990s, children in Northeast China were eating ice cream all year round.

Original Li chi shou chi huo institute

Some time ago, the price of local ice cream in Northeast China rushed to the topic because it was too cheap. In fact, the price of local ice cream has not increased much in recent years. Except for some very famous online celebrity products, the price of most ice cream can meet the ideal of buying a big bag for 10 yuan.

As a child in Northeast China, I really miss the days when I wholesale popsicles in boxes and chew popsicles all year round!

The snowman is full of candied haws and popsicles.

01

Ice cream and popsicles

/Accompany the Northeast people all the year round/

More than 20 years ago in winter, a child in Northeast China bought a few cents roasted sweet potatoes at the school gate after school, covered his hands while eating, and his breath formed a white fog in front of his face. Then, less than an hour after I turned home, I dug out a popsicle from the ice cream box in the yard and began to chew …

In the past, my southern roommate asked me curiously, why are Northeasters afraid of cold and heat? I said, "Imagine that it is MINUS 30℃ outside the house and 20℃ above zero in the house in winter. When the temperature difference between indoor and outdoor reaches 50, are you afraid?"

Frozen food is usually required to be stored below MINUS 18℃. The outdoor temperature in winter in the three northeastern provinces is much lower than this. Eating ice cream in winter can also save electricity at home, and the balcony or yard of every household is a natural refrigerator. Ice cream, frozen meat and frozen fruit are neatly arranged, and it is not unusual to sell ice cream on the street.

Popsicles and ice cream are all on the table, freezer? No need! Tuchong creativity

It is precisely because of the particularity of the weather that ice cream is bought all year round, and ice cream brands are not worried about selling.

Around the 1990s, the "new three items" of China families replaced the "old three items", and refrigerators became more and more popular as common household appliances. There are fewer and fewer aunts walking around with ice cream boxes on their backs, and there are all kinds of ice cream packed independently in small shops.

Creative ideas of sorbet boxes in 1980s and 1990s.

In summer, the old railway in Northeast China is even more presumptuous. With a refrigerator at home, ice cream is bought by the box, and several neighbors can enjoy the discount price and wholesale directly from the ice cream factory. There is no middleman to earn the difference. If you want to buy it in bulk, you can also buy it at any time at the designated window in the ice cream factory.

When I was a child, I especially liked to go to the ice cream factory, which is different from the small shop. There is a thick wall outside the ice cream factory, and there are several small windows on the wall. The windows are well sealed. Every time a salesperson opens the small windows, he will take out air conditioning from the inside. In the era when there is no air conditioning, the ice cream factory is a luxury for me in summer.

Ice-cold ice cream factory (the picture and text don’t match) What a creative idea

02

Childhood Memories of Children in Northeast China

/Popsicle, ice cream, ice cream, everything/

There are popsicles, milk bricks and milk cakes in Northeast China, among which popsicles are the most. If you ask others to help you buy a popsicle, you can buy 7 or 8 brands. The early popsicles were almost the same, and they were basically original milk flavor. At that time, the inner roll of popsicles was not as powerful as it is now.

The freezer in the canteen shoots Li eating hands.

Milk bricks and milk cakes have higher milk content and can be eaten quickly in summer. Now the glutinous rice paste in Zhongjie, which sells for 50 cents, still tastes the same as before. When I first ate glutinous rice paste, it felt like a sticky bean bag frozen outside in winter at home. However, the glutinous rice skin is not sticky at all, and it is soft, thin and a little strong. The ice cream milk inside is sweet and not greasy, and it melts in the mouth. Later, I ate other glutinous rice cakes, the price was several times higher, and it was not very delicious.

Glutinous rice cake zjbd

There is also the ice cream with waffles and milk cakes, which children especially like. There is no ice cream stick, so you have to drag it with a packaging bag when you eat it, and you will accidentally melt it. For example, the milk tofu of Hongqi is wrapped in wafer cakes on all sides, with milk cakes in the middle; There are many sandwiches in the square cake on Sunday, some of which can resist hunger like eight-treasure porridge; There are also hundreds of Wafer Ice Cream from Sofia, which is also a very popular classic …

Red flag milk tofu, shoot Li Chishou.

To say that it is convenient to eat, the most powerful thing is this kind of sorbet. A hundred schools of thought won Sophia’s big bowl of sorbet. The sorbet is cut into small pieces, which can be used with a spoon, fork or chopsticks. It is convenient to eat without getting dirty hands. There are also ice cakes packed in bags by Lao Dingfeng, all of which give people a pleasure of swallowing ice cream.

Bagged sorbet laodingfeng

A bag of ice cubes with several flavors, such as Sprite and Coke, costs a few cents. When you buy it, open a bag and pour it into a big tea pot to soak in water. At that time, it was not popular to freeze your own ice, so it was convenient and convenient to eat it.

Frozen drinks shoot Li eating hands.

In summer, at the cold drink stand at the entrance of the railway station, you can also eat soft drinks to soak sorbet, dig out several spoonfuls of sorbet balls from the ice cream vat, put them in a plastic cup of about 500 ml, and then open a bottle of iced soft drinks and pour them in. Ice cakes in cold drink stalls generally have low milk content and few flavors to choose from, but they are enough to relieve summer heat.

In addition to these, there are many ice cream with age memory.

Shenyang Huanggu ice cream left in my memory has its own selling sound BGM. After Huanggu ice cream returned, it also submitted a "sound trademark" for applying for registration of selling sound.

Jin Zhiwen has a song called "Pingquan Road", and there are two lyrics singing "Ice cream, ice cream in Changchun Hotel". Ice cream, little cream ice cream. " What I’m talking about is the small cream ice cream in Changchun Hotel.

Compared with the grounding gas of local ice cream brands, foreign brands spend more time on the style of ice cream. And Lu Xue’s green tongue, let me know that ice cream can not only be eaten, but also "scare people", and I have to swing it around for a long time every time I eat it halfway.

Green tongue, shoot, shoot, shoot

At that time, Mengniu and Yili also enriched the ice cream patterns in the supermarket under various competitions, such as small pudding, milk raisins and green mood. What surprised me most at that time was that they updated their products quickly.

Xiao bu ding Shu tu chong creativity

03

Today’s Northeast Ice Cream Market

/Don’t mention it. Come and eat./

The Madiel Cold Drink Hall on Harbin Central Street is the punch-in point for tourists. Founded in 1906, Mattel is one of the earliest cold drink enterprises in China. There are many Russian-style buildings in Harbin. Mattel’s name is very exotic, but ice cream is a very simple strip. Different from other local brands that take the people-friendly route, the average price of Mattel today is more than 10 yuan, even in the high-end ice cream market.

The creative idea of Madiel cold drink hall in Central Street

In recent years, some brands of ice cream in Northeast China are very popular, such as Ruby (Northeast Big Board) and Baijiade, which are very popular with friends in the south. In 2019, when they were hungry, they released a map of China ice cream, and these ice creams were better in the province than in the local area.

Northeast Daban Tuchong Creativity

There are also some ice cream brands in online celebrity that have become popular recently because of their good product marketing, such as Aoxue (double egg yolk ice cream, Northeast pot-stewed), Zhongjie (1946 series), Madiel, De’s (Grando series), Humboldt (grass-burning ice cream), etc. Those who have no perseverance have all gone to chop their hands.

Online celebrity Xuegao Tuchong Creativity

In fact, it is easy to find ice cream decades ago in the freezer of the local supermarket. The owner of the small shop said that many old ice creams were upgraded and changed in packaging, but the inside remained unchanged.

.

The old-fashioned milk cake in the new package was shot by Li Chishou.

People in Northeast China love ice cream, which is not inferior to other cuisines. Many cities have unique ice cream memories. Northeast ice cream, like northeast old iron, is warm and practical, which can make you full and eat well.

What’s the smell of iron railings in the northeast?

Original title: "Northeast children in the 1990s are eating ice cream all year round."

Read the original text

How to excavate the era connotation of Yangming culture？ Experts describe Guiyang in their hearts

　　CCTV News:In 2008, Guiyang first put forward the Guiyang spirit of "unity of knowing and doing, striving for the first place through cooperation", and integrated Yangming culture into the urban spirit. The Guizhou Provincial Party Committee and the provincial government took Yangming culture as a key cultural business card during the 13th Five-Year Plan period, and regarded "the unity of heaven and man, knowledge and action" as the humanistic spirit of Guizhou, and the inheritance and development of Yangming culture gradually became a prairie fire.

　　How to understand the shaping of urban spirit by Yangming culture and explore the era connotation of Yangming culture? How to build a spiritual highland, boost the development of one side and benefit the people of one side? Let’s see how the experts describe it in the column "On Tao".

　　Describe Guiyang in your heart

　　Gu Jiu, former director of Guizhou Literature and History Research Institute:I want to talk about my feelings about Guiyang in the past, Guiyang today and Guiyang in the future from the perspective of a common people.

　　When we were young, there were basically no buildings in Guiyang. When we climbed to the East Mountain, we saw all the black tile houses, all of which were one floor, including the roof of our house, and the ceiling could be touched when we jumped up. As soon as the door is opened and closed, it is wooden, so there is a "ga". There is also a window. If you don’t hold it well, you will be scolded if the window paper punctures your family.

　　Guiyang at that time may not be too far away from Mr. Wang Yangming’s situation in Guiyang. If Mr. Wang Yangming crosses to today, it would be amazing to see Guiyang and the Dragon Field today. But at the same time, on the other hand, will he also have something that is not satisfied and not satisfied? I thought for a long time, and I said about three sentences:

　　The first sentence is that it should be an abundant but concise material life. In a place like Guizhou, if its products want to prosper endlessly, we may be sorry for nature and the surrounding provinces. If we want to develop the whole of China, maybe the earth can’t stand it, and maybe the resources of other countries can’t stand it. Therefore, I hope that we are "rich". This word is very important. It is very convenient for the elderly to see a doctor, and it is very convenient for children to study. I hope Guiyang is like this.

　　In the second sentence, I hope that the social life in Guiyang will be free and harmonious in the future, and the pluralistic existence of society can find its niche and form a common harmonious ecology. This is my dream for Guiyang’s future;

　　In the last sentence, I hope that my spiritual life is full and full. Enrichment means that every day the sun is a brand-new sun, and every day at sunset, we feel that this day has not been wasted. You are a person who creates beauty, you love nature and exercise, you like painting, you like music, and you can even play the piano.

　　Taken together, the above three sentences, I think it is actually the social ideal of China tradition from Confucius’ great harmony to Wang Yangming. If so, if Guiyang can go to the front, it can set an example for China. If China can do these things, the world will respect Chinese very much, and they will say that traditional culture has returned to China.

　　Open green wisdom

　　Wang Chun, Vice Mayor of Guiyang Municipal People’s Government:From the integration of city and nature, a model is the original old Guiyang; From the integration of cities and industries, we have a new Guiyang after the founding of the people’s Republic of China; Now we are all describing a big Guiyang, and its planning orientation and direction, I think there are three aspects: one is open Guiyang, the other is green Guiyang, and the third is smart Guiyang.

　　The first is openness. Historically, Guizhou has had two major opening-up processes. The first time was Zhu Yuanzhang’s transfer from the north to the south, and 300,000 troops went to Guizhou. This is a tunpu culture; The second big opening was the westward movement of the Anti-Japanese War before the founding of the People’s Republic of China, and many Guizhou people came there at that time after the founding of the People’s Republic of China. So now we are facing a new round of western development, a big opening. The state defines Guizhou as an inland open economic zone, and has issued a plan for land and sea passage, in which Guiyang has important opportunities. Because opening up has brought about entrepreneurship and suitable employment, I think Guiyang, which is open, is an entrepreneurial city.

　　The second aspect is green Guiyang. We all feel this deeply, especially from other places. When we arrive in Guiyang, it is really refreshing. Guiyang has a green environment, air and blue sky. Guiyang is an ecological city, a livable city and a healthy city. More and more people come to live in Guiyang, so living and working in Guiyang has good competitiveness.

　　The third aspect is wisdom Guiyang. If opening up may still lag behind other cities in the country, green may lead other cities in the country, and when it comes to big data, then we are on the same starting line as the whole country. Therefore, Guiyang in the future is also a digital city and a modern city.

　　Therefore, with the development goals, open Guiyang, green Guiyang and smart Guiyang also spur the municipal government to plan and build Guiyang better.

Guangzhou Automobile Chuanqi adds ＂new members＂, which is the first choice for urban white-collar commuters.

The appearance of the new car adopts Lingyun Wing 3.0 design language, its front grille is designed with multiple chrome-plated horizontal bars, which are connected with the headlight group as a whole, and its lower enclosure is designed through, and the C-shaped daytime running lights on both sides enhance the recognition of the front face. The side waistline extends from the front fender to the tail light group to create a dive visual effect, and the tail part adopts a through light group design, and the chrome-plated double exhaust enhances the sports atmosphere of the tail part.

In terms of interior, Chuanqi gm6 is mainly black, but it has been upgraded in details. The new car is equipped with 12.3-inch LCD central control panel, cool LCD instrument, panoramic image, front seat heating and other configurations. In addition, Chuanqi gm6 is also equipped with one-button start, electric seat adjustment and other configurations to provide drivers and passengers with a more comfortable travel environment.

The length of the car is 4793mm, the width of the car body reaches 1837mm, and the wheelbase is 2810mm, which is quite satisfactory. In the same class, the wheelbase of Chuanqi M6 ranks 15th. The design of skylight also increases the subjective space feeling of front and rear passengers. Among the models of the same price and class, the trunk volume of Chuanqi M6 ranks 6th. The shape is very regular, and the storage volume is absolutely no problem for daily use.

Chuanqi M6MAX 270T Premium Edition uses a 1.5 engine, with a maximum horsepower of 177 and a peak torque of 270, matching the wet dual clutch (DCT) gearbox. The whole power parameters are superior in power performance among engines of the same class, which can provide better power performance. Chuanqi M6′ s official measured zero acceleration score is 9.4S, ranking 21st among 120,000-180,000 MPV models.

Chuanqi M6 has complete active/passive safety configuration, includingAutomatic parking、Zero tire pressure endurance tire、Automatic parking、Steep slope descent、hill start assist control、knee airbag、HUD head-up display、Anti-lock braking (ABS)、Braking force distribution (EBD/CBC, etc.)、Brake assist (EBA/BAS, etc.)、Traction control (ASR/TCS, etc.)、Active noise reduction、Engine start and stop、Side safety air curtain、Wireless charging of mobile phone、night vision system、LED daytime running lights、Forward reversing radar、Tire pressure monitoring、Steering wheel heating、Body stability control (ESP/DSC, etc.)、Rear reversing radar、Fatigue reminder、Remote parking、Child seat interface、Lane keeping (LKAS)Equal configuration.

Among them,Automatic parkingYou can avoid stepping on the brakes for a long time or needing to pull frequently;Steep slope descentCan safely pass through steep slope road conditions at low speed;knee airbagReduce the injury of the car interior to the occupant’s knees in the secondary collision.

In addition to the above description, we can also go to the Easy Car Forum to browse more real car feedback from actual buyers, or use our experience.

Exposing Two Deep Problems： Follow-up Interpretation of Baojun 560 Incident

　　[car home Industry] (|), a model that stopped production for more than two years and was gradually forgotten by the market, has delivered over 610,000 vehicles in the past three years from its listing in July 2015 to its withdrawal from the historical stage in April 2018. However, 19,680 vehicles with 6-speed DCT gearboxes have been repeatedly complained by users due to quality defects, which has become a hard stone for SAIC-GM-Wuling. Today, this stone has been moved to CCTV’s "March 15th Party" in 2020. This endless complaint incident no longer reflects the problem of a certain car company, and there is a deeper "cause" behind it …

Home of the car

■ Special policies to protect users’ interests should be introduced as soon as possible.

　　"It’s quite unexpected to be exposed again." "Wuling used to be a cost-effective company and always wanted to seek a breakthrough." "They all follow the process, and maybe the technology is not good." When communicating with many industry experts, we got such a reply, including the relevant R&D personnel of SAIC-GM-Wuling.

　　Baojun is the first time to board the "3.15 party", but the 6DCT problem about Baojun 560 is not the first time to be exposed by the media. In more than a year after the production of this model was stopped, many local media and TV stations have reported on this matter. Baojun officials are also very concerned, and on June 5, 2019, 19,680 models of 2017 Baojun 560 DCT were recalled because of the calibration problem of engine control module (ECU) software. Baojun upgraded the ECU software for users free of charge and replaced the gearbox clutch damping module.

SAIC-GM-Wuling Baojun 560 2017 1.5T DCT flagship model with 7 seats.

"Baojun 560 2017 1.5T DCT flagship model"

　　The calibration matching of power and transmission system is the problem. It is reported that these cars use a 6-speed wet dual-clutch gearbox code-named DCT360, using pre-engagement technology and dual-clutch adaptive control technology from Borgwarner. Although Baojun engineers have made great efforts on the shifting logic of the transmission, the vehicle still has problems. There are also 20,406 2018 Baojun 530 DCT models and 12,252 2017 Baojun 730 DCT models with the same problem, all of which have been recalled.

　　Generally speaking, the vehicles that have been recalled have determined the solution to the problem. However, in this CCTV report, after the manufacturer recalled Baojun 560 for maintenance, some car owners reported that the problem had not been cured. According to the latest statement of SAIC-GM-Wuling, "a special investigation team has been set up to be responsible for the product quality problems encountered by users at all costs". According to the feedback from some users, at present, manufacturers still register and maintain according to the recall process, and there is no new unified solution.

　　Automatic gearbox and power matching work is not a simple matter, which is also the development difficulty of the whole domestic automobile industry. However, it is unexpected that many related problems appear after the new car goes on the market, and it can not be solved quickly in a short time. It is reported that a large-scale recall will cost hundreds of millions of yuan or even more than 1 billion yuan, and the recall processing will take several months or even longer.

Home of the car

　　During the exchange, some people in the industry suggested that SAIC-GM-Wuling should introduce an appropriate extended warranty policy according to users’ demands, and provide an excellent policy for Baojun 560 DCT owners to replace other Baojun models, in view of the huge operating pressure of the current automobile industry and the main factors such as the long-term suspension of production of Baojun 560 and the lack of 6DCT market position and its replacement by new products. At the same time, the problem of engine control module software calibration encountered by this car is discussed as a long-term research topic to avoid similar problems from happening again in new models.

■ Expose the deep problems of the two industries.

　　The 6DCT problem of Baojun 560 is exposed again, which also reflects two deeper problems, and this is not a matter of SAIC-GM-Wuling, but the deep "cause" of the whole China automobile industry.

　　First, the supervision of automobile recall needs to be tightened, and public supervision should be strengthened.

　　"No recall notice was received!" "How many old cars can be recalled smoothly?" "Will the recall definitely solve the hidden danger?" Similar user questions are common in previous car recalls. This time, the public is still not clear about the overall recall progress and maintenance effect evaluation of nearly 20,000 Baojun 560 vehicles, which has led to the continuous amplification of cases such as "adverse recall and maintenance".

　　According to the implementation measures of the regulations on the recall management of defective automobile products, "producers shall submit a recall periodic report to the General Administration of Quality Supervision, Inspection and Quarantine every three months from the date of implementation of the recall. If AQSIQ has special requirements, the producer shall submit them as required. The producer shall submit a recall summary report to the General Administration of Quality Supervision, Inspection and Quarantine within 15 working days after completing the recall plan. " However, reports like this are almost never made public, and the media rarely follow them up.

Home of the car

　　An anonymous senior supplier of automobile gearbox parts believes that "the recall will make car companies and suppliers pay a huge price. Some serious recalls can lead to huge losses of enterprises. The state has supervision over the recall progress, but it still cannot completely rule out the possibility of the recall subject exploiting legal loopholes." Whether the state needs to further introduce stricter policies on recall supervision and strengthen public supervision is worth exploring in the industry.

　　Ye Shengji, chief engineer and deputy secretary-general of China Automobile Industry Association, told car home that some car companies voluntarily recalled, but if the companies failed to fulfill this responsibility and evade the recall, the regulatory authorities would intervene, and if the recall measures could not effectively eliminate the product defects, the producers would be required to carry out the recall again or take other corresponding remedial measures.

　　Second, the research and development, production and assembly adjustment of automatic gearbox are still industrial problems.

　　In recent ten years, the domestic automobile industry has been in a weak position in the field of automatic transmission for a long time. Not only local enterprises, but also joint ventures have many problems in cost control and matching research and development of automatic transmission products for low-end models. Obviously, the problem of Baojun 560 is not a case in the field of automatic transmission. SAIC-GM-Wuling, as a joint venture with SAIC and GM as the main shareholders, has perfect upstream industry supply capacity. The key components of Baojun 560 are from well-known suppliers at home and abroad, including Nexter’s EPS, Autoliv’s ESC, Aisin’s manual gearbox, Baosteel’s vehicle steel, one-button start and keyless entry in mainland China, and United Electronics’ body control module assembly.

SAIC-GM-Wuling Baojun 560 2017 1.5T DCT flagship model

　　On July 18th, 2015, Baojun 560, the first "big household SUV" of SAIC-GM-Wuling, was officially launched. The configuration of all manual gears and the top price of less than 90,000 made this SUV quickly open to the market, and once rushed to the second place in the sales list of compact SUVs, but Baojun needed to break through to the high end. In 2016, Baojun first tried the 5-speed AMT gearbox from Aisin. Unfortunately, 12,485 2016 Baojun 560 AMT models were recalled due to poor contact of the terminal of the gearbox sensor harness connector. On the other hand, DCT360 developed by SAIC Transmission and Borg Warner began to be matched with Baojun 560, but in the end it could not escape the fate of recall.

　　Nowadays, Baojun brand has taken the CVT gearbox which can simulate 8 gears as the main automatic transmission configuration. In fact, the DCT360 and DCT250 of SAIC Transmission are products developed and promoted in the early stage. This year, SAIC Transmission has launched a new generation of wet medium-torque dual-clutch gearbox DCT280, which matches many new cars of Roewe and MG.

Home of the car

　　Looking back at the whole automobile industry, the local automatic transmission enterprises have been in the process of following and exploring. Although domestic enterprises such as SAIC Transmission, Sheng Rui Transmission, Honeycomb Yichuang, Wan Liyang and Dongan Automobile Development have made breakthroughs in DCT, CVT and AT automatic transmission, the local supply capacity of the upstream components of the industry is only 21%, mostly housings and synchronizers, while key components such as CVT steel belt, dual clutch module and ECU control module are still occupied by foreign companies. There is also a big gap in the experience and accumulation of domestic enterprises in vehicle powertrain integration.

　　Xu Xiangyang, executive deputy director of the National Passenger Car Automatic Transmission Engineering Technology Research Center, said in an interview with the media that many domestic vehicle companies do not have automatic gearbox matching and calibration technology, and the matching and calibration of automatic gearboxes are mostly dominated by suppliers, so the level of transmission companies largely determines the quality level of automatic gearboxes on the whole vehicle. Vehicle companies may not have their own independent automatic transmission suppliers, but they must have corresponding matching and calibration technologies, core control strategies and quality control capabilities for suppliers, so as to avoid similar problems from happening again.

Editor’s comments:

　　When Baojun 560 officially stopped production, there were a lot of doubts in the industry, and of course there were regrets, but the rapidly changing market forced Baojun to make this decision as soon as possible. In 2017, compared with competing products Chuanqi GS4 and Haval H6, Baojun 560 was difficult to make new breakthroughs in terms of sales volume and technical advantages, so Baojun 530 became an alternative model.

　　This incident is a huge product crisis that Baojun brand has to deal with, and it is a brand crisis that needs the management of the enterprise to actively respond to the whole line of sales and after-sales. Regardless of whether the car has been discontinued, car companies should raise the interests of consumers to a new height. What is the core of brand power? The recognition of consumers is the basis for the sustainable development of enterprises. If a solid user base is not established, how can we save users only by upgrading products? If you are the owner of Baojun 560 DCT, how do you want to communicate with the enterprise? What kind of compensation do you want? Let’s leave a message! (Text/car home Liu Honglong)

Experts introduce the prevention and treatment of respiratory diseases in winter： it is not advisable for parents to give azithromycin to their children by themselves.

CCTV News:On November 13th, the National Health and Wellness Commission held a press conference on the prevention and treatment of respiratory diseases in winter. Recently, some parents of children listened to the advice of the internet and gave their children azithromycin and other drugs by themselves. Wang Quan, chief physician of Beijing Children’s Hospital, said that it is not advisable for parents to give their children azithromycin by themselves.

Wang Quan said that the current season is the high incidence of respiratory diseases in children, and mycoplasma pneumoniae infection accounts for a certain proportion, but on the whole, virus is still the most common pathogen of respiratory infections in children, including influenza virus, rhinovirus, adenovirus, respiratory syncytial virus, etc. Azithromycin is ineffective for viral infections, and it is unreasonable to use azithromycin to treat viral infections.

In addition, the child’s organ function development is not perfect, and drug abuse may cause some adverse reactions, especially organ damage. At present, azithromycin is a prescription drug, which is an antibacterial agent of macrolides. It should be standardized under the guidance of a doctor or pharmacist. This standardized medication includes giving children the right dose, the right course of treatment and the right route of administration. Remind parents that children are not a miniature version of adults, and it is not advisable to abuse drugs or use drugs at will. We must consider the safety and effectiveness of drugs.

Depth Holography： The Encounter of Holography and Depth Neural Network

Written by | Zheng Shanshan and Zhang Xiangyu

Description | This article is submitted by the author (research group).

With the rapid development of mathematical optimization and computing hardware, deep neural network（Deep Neural Networks, DNN）(noun explanation >) has become a powerful tool to solve many challenging problems in various fields, including decision-making, computational imaging, holographic technology and so on.

Since its development in 1947, holography（holography）(noun explanation >) has become an important and extensive technology, and has applications in various fields of optical engineering, including optical imaging, microscopy, metrology, three-dimensional (3D) display and so on. Holography means containing all information of light waves, which is physically divided into two processes: recording and reconstruction of wavefront, both of which can be realized by optical or digital methods.

At present, the two different fields of holography and deep learning have merged with each other, forming a new interdisciplinary field-depth holography.

Recently, from Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of SciencesSitu guohaiResearcher with　Deep holography　For the topic of　Light: Advanced Manufacturing　In this paper, a review article was published, and the progress of depth holography was comprehensively reviewed.holographic(holography)andDeep neural network(DNN)The mutual promotion relationship between them.

Dnn has been proved in holographic reconstruction and computer generated holography.（computer-generated Holography, CGH）Almost all aspects of the application;

● Holography has the ability of interconnection and parallel processing of light speed, which is an optical realization of DNN, that is, optical neural network.（optical neural networks, ONN）(noun explanation >).

In this paper, the basic theory and architecture of DNN are briefly introduced, then some important progress and research trends of depth holography are discussed, and finally its future prospect is prospected. I hope this review can promote the further development of this field.

Deep Neural Networks: A Concise Introduction

The conceptual framework of DNN is shown in Figure 1. Feedforward neural network, or multilayer perceptron.（MLP）There is an input layer, an output layer, and one or more hidden layers. Each layer can have a different number of neurons, called perceptron; And each unit receives the weighted sum of its inputs from the upper layer.(Except for the first layer, its input is the original image to be processed by NN). The goal of feedforward neural network is to optimize an NN model to approximate a continuous function.trainAft learning that network parameter,The mapping from the input space x to the output space y can be realized.

Figure 1. Conceptual architecture of DNN (Source: Light: Advanced Manufacturing)

Compared with the traditional holographic technology based on physics, DNN method has been proved to have unique advantages. As long as there is enough data, DNN can learn features from the higher-level structure composed of lower-level features, but it can’t clearly express the exact physics of the system, which leads to great challenges to the generalization and interpretability of the method.

Therefore, we very much hope that we canGive full play to the advantages of DNN and physical model at the same time, develop DNN based on physical information.（Physics-informed DNN）.

● Physical integration（physical fusion）, or a single physical DNN.

It directly inputs the solution of physical model as DNN model.(part).

● Residual physics（residual 　physics）, or recursive physical information DNN

Add physical solutions to the output of DNN, so that DNN model only needs to learn the mismatch between model-based solutions and the real situation.

● Regularized physics（physical 　regularization）, or concatenated physical information DNN.

The regularization term in a set of physical constraints is used to punish the network solution. The regularization term can be used as part of the loss function or through the physical reconstruction process.　　

● Embedded physics（embedded　physics）DNN

As shown in Figure 2, the central idea is to bring the physical model into the network optimization cycle.

Figure 2. Typical architecture of DNN embedded in physics (Source: Light: Advanced Manufacturing)

● Network approximate physics

As the name implies, the physical model is approximated by using DNN.

Holographic reconstruction

Hologram can be regarded as the superposition of object light and reference beam. The intuitive method of holographic reconstruction is based on the physical model of diffraction, that is, the numerical calculation of wave diffraction process. Off-axis holography can be solved by spatial filtering, but spatial filtering will bring the loss of high-frequency components, which greatly hinders the quality of reconstructed images. For coaxial holography, the removal of zero order is relatively simple, so most of the research on coaxial holography reconstruction is to deal with twins.

Physically, twin images are actually out-of-focus copies of reconstructed object images, which can be eliminated by subtracting out-of-focus images. At present, the most widely used strategy is to adjust some physical parameters of the optical system and obtain the corresponding holograms, so as to establish a small linear equation set, and to link the recorded holograms with the tuning parameters, and then solve the object wavefront.

Mathematically, the twin image artifact is caused by the lack of phase when the hologram is recorded. This shows that if the missing phase of the hologram can be solved, the twin image artifacts can be solved.

Holography inspired by DNN

1) The most direct method: "end to end" DNN

EHoloNet developed by ResNet and U-Net: receiving the original digital hologram as input, and generating the phase object wavefront without artifacts;

Y-network architecture: simultaneously reconstruct intensity and phase from a single digital hologram;

It is also possible to generate a countermeasure network（GAN）Implementation, training data does not need to be paired.

2) Physical fusion, or DNN of single physics.

The traditional numerical free space is used to propagate back to the target plane, and then the amplitude and phase of the reconstructed wavefront are sent to DNN respectively, and all these artifacts are removed by training.

3) physically embedded DNN

As shown in Figure 3, this strategy has two obvious advantages by incorporating the physical imaging model into the traditional DNN:First of all, it does not need any data for pre-training; Secondly, the reconstructed image satisfies the constraints imposed by the physical model, which is interpretable.

DNN model in PhysenNet can be replaced by other neural networks, depending on the task at hand. For example, researchers have successfully incorporated the phase imaging model into the GAN network.

Figure 3. Schematic diagram of DNN incorporating physical model: phase imaging (Source: Light: Science & Applications, 9: 77 (2020).)

In addition, DNN method can also be used to solve various problems related to holography.Such as phase unwrapping, autofocus, phase distortion compensation, speckle suppression, computer generated holography (CGH).

DNN inspired by holographic technology

Holographic technology is to realize optical neural network.（ONN）One of the important ways.

The early research includes the optical realization of fully connected neural network and Hopfield model, which is a cyclic neural network.（RNN）The foundation of. Holographic neural network does not use logical neurons like digital neural network, but relies on the interconnection of hologram itself. In a fully connected holographic neural network, the weights are stored in the pixels of the hologram.(neuron)Medium. a layer or deck(hologram)Each neuron simply modulates the light shining on it from the upstream layer and then illuminates the downstream layer. Holographic neural network can be realized by photorefractive crystal, which is a three-dimensional device in itself and may store billions of weight data. Therefore, it is hopeful to solve large-scale reverse problems in principle.

Figure 4. Schematic diagram of diffraction depth neural network

(a) DNN contains a plurality of transmission (or reflection) layers, in which each point on the layers acts as a neuron with a complex transmission (or reflection) coefficient, and the transmission or reflection coefficient of each layer can be trained using deep learning, thereby performing a function between the input and output planes of the network. After the learning stage, the design of D2NN is fixed; Once it is manufactured or printed in 3D, it can perform the learned functions at the speed of light. Different types of diffraction depth neural networks: (b) classification and (c) imaging. (Source: Science,361(2018))

The modern realization of holographic neural network takes advantage of diffraction, so it is named diffraction depth neural network.（D2NN）, as shown in Figure 4. In hardware implementation, the hologram in D2NN is actually a diffractive optical element.（DOE）It can be realized by 3D printing, nanotechnology, or electrically addressable digital micromirror devices.（DMD）Get. Like many other optical neural networks, the original D2NN was trained offline. In order to implement better training strategies, researchers have made a lot of efforts, such as back propagation technology to update unit weights through gradient transformation from Euclidean space to Riemannian space, and methods to realize optical grouping. People have also studied the applications of D2NN in logic operation, optical information processing, holographic reconstruction, pulse shaping, single pixel machine vision of spectral coding and so on.

Summary and prospect

The integration of holography and neurocomputing has greatly promoted each other’s development, and also provided us with a wonderful field to explore.

For holography inspired by DNN, this paper discusses five different ways to incorporate physical information, and shows their applications in solving various problems related to holography.

● In addition to trying different DNN architectures,An important trend is to incorporate physical models into DNN models.. This idea has been paid close attention by researchers in different fields.

● PhysenNet embedded in physical model has obvious advantages, but its optimization speed is slow.For lightweight network structure and more effective training algorithmMade a request.

●　Comprehensive utilization of the advantages of physical prior and traditional data-driven methodsIt can make the training more effective, improve generalization and increase interpretability.

For DNN inspired by holographic technology, most of the research published so far focuses on optical reasoning. The parallel processing ability of the holographic neural network at the speed of light does guarantee powerful reasoning ability, even surpassing the performance of Tesla V100 tensor core GPU, the top product of Nvidia, in some tasks.

In order to give full play to the advantages of optics, it is necessary toOn-line training of network by optical means.There are many possibilities to effectively implement most basic functions in DNN.　

●　Relying on the development of new optical materials and equipmentThe wave can be modulated at high speed at sub-wavelength scale to improve the performance of D2NN.

●　The rapid development of neural computing provides us with more powerful algorithms., such as spike neural synaptic network (SNN), can simulate the behavior and learning potential of the brain. The applicability and potential of these new algorithms in holographic technology need to be tapped.

Thesis information

Situ. Light: Advanced Manufacturing (2022)3:13　

http://doi.org/10.37188/lam.2022.013

Welcome the submission of the research group-press release

Reprinted/cooperated/contributed by the research group, WeChat:447882024

Take you to read 1 document every day!Join >Light reading club

Cancer death is related to diet. Four cooking habits or carcinogenicity should be corrected as soon as possible.

"I heard that cooking with gas stoves can cause cancer, and I’ve been thinking about whether to change the induction cooker recently," Aunt Wang said worriedly.

"Really? You won’t be fooled by those marketing numbers again … "Aunt Wang’s daughter questioned, after all, Aunt Wang had been cheated many times before.

"This time, it is said by serious research that it is useless to open a range hood. What can I do!"

……

Does frequent use of gas stoves really cause cancer? Is there any way to reduce the risk?

01

Is the gas stove carcinogenic?

Or increase the risk of leukemia.

According to statistics, at present, the gas penetration rate in China is as high as 98.0%, which is a high level in the world, but recently it has been said that gas stoves can cause cancer. Is it true?

A research team from Stanford University published a paper in Environmental Science & Technology, saying that gas stoves and ovens will release carcinogen benzene during combustion, which may pose a threat to human health.

Benzene is defined as a known human carcinogen by the International Agency for Research on Cancer and labeled as a "carcinogen" by the US Environmental Protection Agency. There is no lower threshold for benzene exposure, and any degree of benzene exposure may increase the risk of leukemia and lymphoma.

The research shows that gas stoves and ovens will release a lot of benzene when using gas or liquefied petroleum gas (propane), especially when used at high power. On the contrary, the benzene released by induction cooker during combustion is much smaller, so it may be a healthier choice to use induction cooker.

It is worth noting that the use of range hoods can not effectively improve the health risks caused by benzene produced by gas stoves. Even with the help of the range hood, benzene will spread outside the kitchen, and it will stay in the air for a long time, so that people outside the kitchen will be exposed to high levels of benzene for a long time.

In fact, this is not the first time that the health hazards of gas stoves have been discovered. A study by Stanford University shows that the benzene concentration formed by gas stove flame in the room may be higher than the average concentration of second-hand smoke, and it will spread to other rooms far away from the kitchen, so that the benzene concentration in the living space may exceed the national and international health standards and affect health.

After reading the above research introduction, many friends will definitely wonder, can we still use gas stoves in the future? In this regard, nutritionist Gu Zhongyi gave two suggestions:

First, open more windows for ventilation, which is the most effective way to reduce indoor benzene concentration. When cooking, be sure to open the kitchen window for ventilation, and close the doors of the kitchen and bedroom at the same time, and then open the door after cooking. Even if there is a range hood, ventilation cannot be ignored.

Second, consider using induction cookers more, because induction cookers hardly produce benzene. For long-term cooking, you can choose an induction cooker, while cooking such as quick frying can still use a gas stove.

02

Is it normal for gas stoves to emit green light?

Beware of two kinds of anomalies

Are you using a gas stove at home? Have you ever noticed the flame color when natural gas burns? In fact, there are hidden health risks. I hope you can understand them in time.

Under normal circumstances, the flame color of gas stoves and ovens is usually blue. The blue flame indicates that the combustion is sufficient and the fuel is completely burned in oxygen, which is the safest and most efficient state.

If there is a green flame in a gas stove, it usually means that it contains a lot of copper compounds when burning, which may be caused by problems with copper materials in combustion devices or pipes, so it is necessary to clean the stove in time.

It should be noted that if the gas stove has red flame or yellow flame for a long time, it is best to stop using it and check whether its function is normal.

1. Poor smoke exhaust

Long-term use of gas stoves may cause the gas outlet to be blocked by oil pollution, resulting in incomplete combustion and red or yellow flames. At this time, it is necessary to clean up the oil stain on the air outlet, and you can use iron wire or old toothbrush to dredge it regularly.

2. The air outlet is blocked

Flue gas needs to be discharged quickly so that the gas stove can continue to burn completely. If there is poor ventilation, the smoke will stay around the flame, resulting in insufficient oxygen, thus resulting in incomplete combustion. The solution is to open the kitchen window or increase the strength of the range hood to ensure the smoke is discharged quickly.

03

Four cooking habits may give birth to cancer cells.

Everyone’s cooking habits are different, but if it is wrong, it may attract the "attention" of cancer cells.

In 2019, The Lancet published a large-scale global study, which focused on the impact of diet on health. This study evaluates the consumption of major foods and nutrients in 195 countries, and quantifies the impact of sub-health dietary intake in 195 countries on the mortality and incidence of chronic non-communicable diseases.

The results show that in 2017, 11 million people worldwide died of dietary risks. It is particularly noteworthy that in China, diet-related cardiovascular diseases and cancer deaths rank first in the world.

The study also pointed out that since 1990, the number of deaths caused by global dietary risks has increased from about 8 million to 11 million in 2017. This shows that improving diet is urgent and necessary to reduce diet-related chronic diseases and deaths.

In this regard, Xiao Jiu reminded that the following four cooking habits should be corrected as soon as possible:

1. Do not turn on the range hood when cooking

Cooking oil at high temperature will produce harmful fumes, which contain irritating substances, which may lead to chronic diseases such as lung cancer. Especially women who have been exposed to kitchen fumes for a long time have a higher risk of lung cancer.

It is suggested that the range hood should continue to work for 3-5 minutes after frying, to ensure the discharge of harmful gases, and to open the window for ventilation to reduce the harm.

2. Put too much salt

High-salt diet may lead to water and sodium retention, increase blood pressure, and then increase the risk of cardiovascular and cerebrovascular diseases. In addition, excessive intake of salt can also damage the gastric mucosa, causing stomach problems such as gastritis and gastric ulcer. Long-term high salt intake is also related to the risk of gastric cancer.

Therefore, attention should be paid to controlling the amount of salt in daily diet, and other condiments such as onion, ginger and garlic can be selected to increase the flavor of food.

3. Reuse frying oil

In the process of frying food, oil will produce many harmful substances, such as oxidation products and benzopyrene, a carcinogen. These harmful substances will remain in the oil and accumulate with the repeated use of the oil, which may increase the risk of cancer after being ingested by the human body.

On the other hand, repeated use of frying oil will also increase the intake of unhealthy fat and cholesterol, leading to an increase in the risk of cardiovascular diseases.

4. Eat fried food frequently.

Frying food may lead to the formation of carcinogens such as acrylamide. In daily life, we should try to reduce the intake of high-temperature cooking food and choose healthier cooking methods such as steaming and stewing.

Conclusion: Healthy eating habits and proper cooking methods are essential to reduce the risk of diet-related chronic diseases. A small change in life may help us stay away from diseases and stay healthy better.

References:

[1] "Benzene concentration exceeds second-hand smoke! The latest research: Cooking with gas stove at high temperature can not only increase the risk of lung cancer, but also cause leukemia … ".Frontier of Life Science. 2023-07-03.

[2] "Natural gas is carcinogenic? How to use the gas stove? Dietitian Gu Zhongyi. 2023-06-28.

[3] "Watch out! Be careful when these two colors appear in natural gas combustion at home. Popular Science China .2021-08-21.

[4] The Lancet: Cancer in China is closely related to diet! OBCD pan-cancer early screening.2021-11-03

Reprinting is prohibited without the permission and authorization of the author.

Read the original text