Earlier, Nash triggered the health and safety agreement on March 1 and missed three games. During this period, the basketball network suffered three consecutive defeats. Durant made a comeback in the last game.

In addition, in tomorrow’s game, the good news for the basketball network is not only Nash’s comeback, but also Owen and Durant will fit in the game.

Today, the basketball network ranks eighth in the East with 32 wins and 32 losses. At 2 a.m. tomorrow, the team will play Celtic away. （Emily）

In recent years, with the rise of data industrial parks in Inner Mongolia, the performance development of the three major local operators has made great progress, especially in the field of government and enterprises. This time, the operator caijing.com tried to select a number of local branches with high performance scale for introduction, and sort out the on-the-job background of the general managers of these companies. Specifically, it involves Feng Deqiang, general manager of Ordos mobile, Meng Junfeng, general manager of Hulun hot, and Pan Sheng, general manager of Baotou Telecom.

Feng Deqiang, general manager of Ordos mobile, was the head of Ulanqab mobile more than three years ago

As an economically strong city in Inner Mongolia, Ordos has ranked first in the total economic volume of Inner Mongolia for many consecutive years, and its economic growth rate has ranked first in the local area for more than ten consecutive years. In recent years, the performance of the three local operators has also improved greatly. This time, the operator caijing.com tried to introduce the on-the-job background of Feng Deqiang, general manager of Ordos mobile.

According to the industrial and commercial registration information of enterprise investigation, Feng Deqiang began to take over in 2018. Before that, he was the general manager of Ulanqab mobile for four years and had a lot of work experience. At that time, it was also important to arrange him to take over.

It is understood that the adjustment at that time was because Ma Dongmei, the former general manager of Ordos mobile, was promoted to the deputy general manager of Inner Mongolia Mobile. As a female general, she led Ordos mobile to complete various tasks assigned by the head office for several consecutive years under difficult conditions, and her user development and business income also reached a record high for six years, During this period, she also won the title of local model worker for her excellent performance, so it’s reasonable for her to be promoted.

Feng Deqiang’s natural business ability can not be underestimated. At that time, when he was the general manager of Ulanqab mobile, he published the article “Research on marketing strategy of Ulanqab Mobile’s high-value customers”, subdivided the local user market, determined the high-value medium and high-end customer market, gave the difference between high-value customers and ordinary customers, and analyzed the classification and characteristics of medium and high-end customer groups, It can be seen that it has keen market insight and strong execution.

It is worth mentioning that Cui Yunfeng took over the vacant general manager of Ulanqab mobile at that time, and now Cui Yunfeng has been transferred to the general manager of Chifeng mobile, which is also a local branch with great development potential.

At present, led by Feng Deqiang, Erdos mobile is launching the “service into 10000 homes 2.0” activity, focusing on building 1000 high-quality broadband communities and continuously improving the network experience of the general public.

Meng Junfeng, general manager of Hulun hot Telecom, has served as general manager of Ordos Telecom for two years

In Inner Mongolia, the local Huhhot Baotou Hubei economic circle is quite famous, that is, the urban agglomeration composed of Hohhot, Baotou and Ordos. With the development and rise of the three major operators in Inner Mongolia, many of their Prefecture and city branches have also received attention. This time, the operator caijing.com tried to introduce the development status of Hohhot Telecom.

In recent years, through rapid development, the three cities of Hubao and Hubei have become the most dynamic urban economic circle in Inner Mongolia, known as the “Golden Triangle” area of Inner Mongolia. Hohhot, which means “green city” in Mongolian, is named because the central urban area is adjacent to Daqingshan in the north. It has also become the most livable city in the region, with a permanent resident population of more than 3 million.

At present, the economic development of the region is also good. In 2021, the GDP exceeded 300 billion yuan for the first time, ranking the third in the 12 League cities of Inner Mongolia in terms of total amount and increment.

Such economic development is also conducive to the development of Hohhot Telecom. At present, Meng Junfeng, the general manager of the company, has been in office for two years. At that time, he was transferred from the general manager of Ordos Telecom. Earlier, he also served as the deputy general manager of Ulanqab Telecom. In recent years, through experience in many branches in many cities, we have accumulated a lot of rich working experience.

A few months ago, Meng Junfeng also presided over the signing ceremony of the “digital life” strategic cooperation between the company and Inner Mongolia interior decoration association and the launching meeting of the first “Digital Life Festival”. As the “vanguard” of information construction, Hohhot Telecom actively embraced the opportunity of digital transformation and gathered rich categories of Pan intelligent terminals based on “5g + broadband + WiFi”, Provide customized solutions, give users diversified choices, provide high resource investment through platform construction and channel empowerment, and accelerate the popularization of digital information consumption.

Pan Sheng, general manager of Baotou Telecom, was at this level at least seven years ago and once served as the head of Tongliao Telecom

Baotou, as the manufacturing industry, industrial center and the largest city in Inner Mongolia, its development has a great impact on the development of Inner Mongolia. In recent years, the three major operators in the region have also made considerable performance progress. This time, the operator caijing.com tries to introduce the on-the-job background of Pan Sheng, general manager of Baotou Telecom.

Statistics show that in the first three quarters of 2021, Baotou’s GDP was 250.1 billion yuan, ranking among the best, while the region’s population was more than 2.7 million, and the per capita GDP ranking was not low.

Pan Sheng started in Baotou Telecom in his early years and published the article “design and implementation of IP MAN optimization of Baotou Telecom” very early. At that time, as a network technician of Baotou Telecom, he designed and implemented the IP MAN optimization project in the region.

Since then, Pan Sheng was promoted to the general manager of Tongliao Telecom, and later transferred to the general manager of Baotou Telecom in 2019, realizing a great leap forward.

It is reported that during his tenure as general manager of Tongliao Telecom, Pan Sheng paid special attention to user service and launched a series of policies, such as “broadband · reassurance” service commitment, “five ones” service commitment, unblocking user service channels, etc. it can be seen that he is well aware of the importance of service.

Thanks to this, he was transferred to Baotou Telecom, which has a larger scale of performance, as the general manager in 2019. In just a few years, he led his employees to actively explore the market, cultivate marketing ideas and carry forward the spirit of model workers.

At the same time, Inner Mongolia Telecom has made great progress in performance development in recent years, and its Baotou Telecom has naturally made no small performance contribution, which is closely related to the management of general manager Pan Sheng.

Guest speaker: Liu jianglai, Professor, School of physics and astronomy, Shanghai Jiaotong University, member of Youth Innovation Alliance of future forum

In 2019, the Nobel Prize in physics was awarded to two fields: one is the field of planetary dynamics, and the other is cosmology. The name of the winner of cosmology is James Peebles. Since the 1960s, he has made a series of pioneering work on cosmology, using a self consistent, complete and accurate description of the evolution history of the universe from the earliest Big Bang to today. He linked microscopic particle physics with macroscopic cosmology. According to this “physical cosmological model”, the invisible dark matter, which currently accounts for 27% of the cosmic component, is a necessary factor in the evolution of the universe, and even promotes the evolution process of the universe.

Why can the Milky Way rotate at high speed?

In order to explain why the silver disk of the Milky way can rotate at such a high speed, we need to cover the Milky way with a huge dark matter halo. The dark matter contained in the middle provides gravitational potential energy for the rapidly rotating galaxies in the Milky way. If we observe the rotation of each star (including the solar system) around the center of the Milky way, we can calculate the distribution of dark matter.

We know today that the density of dark matter near the sun’s orbit is about 1 / 3 of the mass of protons per milliliter! The mass of the proton is 10 to the minus 27th power kilogram. The density of dark matter is 21 orders of magnitude lower than that of air, followed by 21 zeros!

You may ask, why does such thin dark matter, so many orders of magnitude lower than air, affect the evolution of the Milky way? The answer is this. Such thin dark matter certainly has no effect on the small scale, but when it gathers to a large scale larger than the Milky way, it can stick the Milky way together like an adhesive, and the universe can form what it is today.

Today, what we really want to understand is not the appearance of dark matter in astronomy and the universe, but what is dark matter? Just like everything we know, people, animals, bacteria and viruses keep dividing down. In the end, they will be divided into so-called basic particles, such as electrons and protons. Each electron is as like as two peas, although the proton is not the most basic, and there are quarks under the proton, but the upper quarks are always the same, and the lower quarks are always the same, that is, there is the smallest and indivisible unit.

“Portrait” dark matter

Similarly, the research on the essence of dark matter is to draw a portrait of the most inseparable basic particle of dark matter, and understand its mass, charge (which should be zero), spin and interaction intensity. This is what we want to do.

If there is a micro interaction between dark matter and ordinary matter in addition to gravitational interaction, such as the theory of weakly interacting heavy particles (wimp), which has been popular since the 1970s, the particles of dark matter can be studied more carefully in the laboratory.

Generally speaking, there are three main means in experiments. One is called direct collision; The second is to measure the products after they are “destroyed”; The third is to produce dark matter on a very high-energy accelerator, which we usually call direct detection, indirect detection and collider detection.

The main part today is about direct detection. The principle of direct detection still goes back to our image of the Milky way above, that is, the whole Milky way is surrounded by a halo of dark matter.

You can imagine the dark matter halo as a big “haze” around the Milky way, and the solar system is like a person riding a motorcycle. The motorcycle advances at a high speed relative to the “haze”, which is about one thousandth of the speed of light. In this way, the “haze” particles have great momentum towards motorcyclists. Therefore, for detectors on earth, dark matter particles carry momentum and energy, which can be measured by the recoil of ordinary matter after impact.

This simple principle is the idea put forward by Witten and Goodman in 1985 to find the signal that the nuclei of dark matter and ordinary matter are kicked out after they collide with each other. But if you find this very weak collision, how can you say that the signal is caused by dark matter? That’s what experimenters have to do. They’re not just waiting. They need to understand what kind of signal really comes from the collision between dark matter and ordinary matter!

Is dark matter easy to collide with ordinary matter? It must be hard, or I would have found it today! But why it is so difficult is more difficult to understand. How much dark matter passes through us every second? An order of magnitude estimate can be made. Because we know the density and speed of dark matter, so we can calculate that one billion dark matter passes through the human body every second. There are about 10 to 29 atoms in each person’s body, and there are as many nuclei. When these two numbers are multiplied together, dark matter should easily hit ordinary matter. But today we know that the number of such dark matter collisions with each person is less than once a year. This is not a theoretical inference, but an experimental result!

We don’t see dark matter because their interaction with ordinary matter is very, very weak! It is very difficult to find such a weak interaction.

Today, cosmic rays and gamma rays in the surface environment, between the body and the environment, collide one billion times a day, so these collisions are much more than the annual dark matter collision events. Therefore, we should find a way to hide the detector in an environment with low interference factors.

There is no clever way to remove cosmic ray interference. At present, the experiments of measuring dark matter are hidden underground, blocking the high-energy charged particles from the middle of the universe through the rocks on the surface of the earth. For the gamma rays in the environment, these rays exist everywhere, even in the very deep underground. We need to wrap the detector layer by layer and block the gamma rays with well-known lead and copper materials.

In the past decade, China has made rapid development in dark matter detection. China’s Jinping underground laboratory provides an excellent opportunity for this field.

“Panda”