On 8 May, according to the United States Fox News Network, a growing number of women wanted to use firearms for self-protection, as a result of the upsurge in violent crime in the United States, and women’s groups became the fastest growing group of gun owners in the United States.

On the Washington University Square, the American woman, McAay, introduced a round- to 15 rifle, with a one-minute rebalancing of the target lenses, with a crane, giving a heavy gun. She is studying the women’s first scholar firearms safety course under the guidance of the trainers. McAay never wanted to have access to semi-automatic rifles, but as violent crime continues in the United States, she decided to learn to use firearms to protect her.

Data from the United States Civil Opinion Survey “Geloup” show that 15 per cent of women in the United States have firearms in 2016. In 2022, this figure rose to 22 per cent, reaching the highest level ever recorded in “Geloup”. Although men still have a higher probability of possessing firearms than women, this figure has changed little over the years. Ms. McAay said to Fox News Network that she had been strained by continuing shootings, that she was living in Washington, D.C., where violent crime had escalated, and that she wished to have the capacity to protect herself and her children, “You always heard the events and had a small child killed”.

A large number of women in the United States share the same considerations as McAay. They believed that criminals often viewed women as easy-to-hand hunting, and they had to consider self-protection. The United States study of the Centre for Research in Pingu showed that women were more likely than men to “protect themselves” as the reason for possession of firearms. (Overseas-Federal Reef)

As a senior designer for many years of entry, the soundness of the bedrock has allowed him to reap the trust of many owners and to bring many unanticipated happiness to the owner in the home design. In his design, there is both an appearance of superiority in the atmosphere and a cultural connotation in deep-rooted.

The essence of the design does not hinge on the real needs of the owner, who takes advantage of the mild spirit of communication with the client, filters deep-rooted demand and makes the most suitable space design for the owner.

Theme

Tension designer

Interviews presented below

Designers need to keep up with time, communicate in depth with the owners, analyse from the perspective of the owners and create exclusive home space for different owners.

In terms of overall layout, the design is designed to meet the needs of the four houses as much as possible, with the main renovation materials dressed in white paints to create a mild and healthy new classical family environment with warm coral grey.

In recent years, China has been designed not as a previous blind leader, and a group of highly qualified young designers have spoken in modern design languages of new Chinese contemporary human settlements, explaining the Chinese people’s existing beauty and character. China has designed youth forces and has completed a period of self-breaking change. Launched by the National Union of New Generations and Golden Tribes, the pioneering advocate for the transformation of the Chinese way of life and the design of the tide — “Young designers of 2022”, is the most transmitable annual pioneer of the design industry, with membership of the National Design Master of Youth and the New Generations and Golden Tribute. The event is devoted to the identification and recognition of outstanding young designers throughout the country who have demonstrated excellence in the field of indoor design, and to China’s design of new influence.

Subsequently, the police summoned the three suspect suspected of illegal fishing to the police station. After weighing and counting the catch, the three people illegally caught 83 crucian carp, carp and silver carp.

After arriving at the case, Luo, Xiang and Du, the three suspect, all confessed to their illegal and criminal acts of illegally fishing aquatic products by using prohibited fishing tools and methods in the closed fishing period and closed fishing areas.

According to the police handling the case, the river of the suspect Luo, Xiang and Du electric fish is the first-class tributary of the Guocun river of the Yangtze River system, and their time of committing the crime is the fishing ban. Later, the agricultural comprehensive administrative law enforcement detachment of Wanzhou District recognized that the fishing tools of the three people were electric fishing tools, which were prohibited fishing gear in key waters of the Yangtze River Basin.

At present, three suspect have violated the laws and regulations on the protection of aquatic resources by using prohibited tools and methods to catch aquatic products in prohibited fishing areas and closed seasons. Their acts have violated the provisions of article 340 of the criminal law of the people’s Republic of China. They are suspected of illegal fishing of aquatic products. They have been transferred by the police to the Wanzhou District People’s Procuratorate for examination and prosecution. They will be punished by law.

Police reminder:

Electricity, poison and fish bombing are fishing methods expressly prohibited by the state. Electric fish is an extinct fishing behavior, which destroys fish resources. Electric fish, regardless of species and size, will have varying degrees of impact on the surrounding aquatic organisms, thus seriously threatening the balance of human living environment. Illegal electric fish not only destroys the ecological environment, but also causes great damage to social and public interests.

In fact, nucleic acid queuing is also a science. If there are too many people in line and there are too few nucleic acid detection points, people will wait too long in line. If a large number of nucleic acid detection points are added in order to avoid queuing, medical resources will be wasted.

So how to reduce queuing time and optimize service resource investment? Mathematicians have studied it for a long time, and thus developed a branch of operational research - queuing theory.

Queuing theory originated in 1909. Erlang, a Danish mathematician and electrical engineer, first studied the telephone busy problem of Copenhagen Telephone Bureau with the method of probability theory. At that time, there was an urgent need to solve an important problem: how many switches should telephone companies set up and how many operators should they hire? Erlang uses mathematical language to describe random callers and random call time, and can answer any number of operator and operator problems. He published his paper “probability theory and telephone conversation” in 1909, which is recognized as the pioneer of queuing theory.

In addition to nucleic acid, the phenomena we often encounter in our daily life, such as shopping in stores, seeing a doctor in hospitals and traffic jams at intersections, are all queuing problems. Similar to telephone busy, machine failure maintenance, and even milk supply and distribution, it is an invisible queue.

So what have mathematicians learned about queuing?

Basic concepts

The first is the basic model of queuing theory.

It’s very simple, that is, when customers arrive at the service desk to receive service, they will queue up, receive service when they arrive, and leave when they receive good service. This is the most basic model description of queuing theory. The basic model of nucleic acid queuing is that residents queue up at nucleic acid detection points, conduct nucleic acid detection when they are in line, and leave when they are finished.

The general queuing process consists of input process, queuing rules and service process

Input process refers to the regularity of customer arrival time. For nucleic acid detection, residents can be regarded as infinite, independent, uniform and random. The so-called “infinity” here means that the nucleic acid detection capacity is infinite, that is, in principle, it can queue up indefinitely, not that the number of people itself is infinite. In contrast, the concept of “limited” can be seen as that the parking space in the parking lot is limited. If you queue up to park, you can stop when you can, and if you can’t, you have to drive away. “Infinite” and “limited” are two different models.

Queuing rules refer to the rules by which customers who arrive at the queuing system queue. It can be divided into loss system, waiting system and mixed system. Nucleic acid detection is obviously a waiting system.

The service process mainly includes two parts: service organization and service rules.

In terms of nucleic acid detection, the service organization can have one or more groups of white blood detected at the same time, and multiple groups of detection can be in the form of parallel or series. I believe there will be different service modes for different communities.

The service rules of waiting system include first come first service, first come first served, priority service and random service. Generally, queuing theory studies the first come first service mode, and nucleic acid detection is obviously the first come first service mode.

Finally, we assume that the service is random and uniform. Such analysis is meaningful. For example, when Dabai goes to dinner at noon, it’s meaningless to study how to queue at this time.

What factors will affect the classification of queuing models?

D. G. Kendall (1953) proposed that there are three features that have the greatest impact on the classification method of queuing model:

10: Time distribution of successive customer arrival intervals

Y: Distribution of service time

Z: Number of service desks

According to these three characteristics, the Kendall mark of the queuing model is: X / Y / Z. Later, Kendall classification mark was extended to six items at the 1971 International Conference on queuing symbols, which was recorded as X / Y / Z / A / B / C, indicating: input distribution / output distribution / number of service units in parallel / system capacity (team length) / system status (limited or unlimited customers) / service rules.

Solution of nucleic acid queuing problem

The purpose of solving the queuing problem is to study the operation efficiency of the queuing system, estimate the quality of service, determine the optimal value of system parameters, determine whether the system structure is reasonable, and study and design improvement measures. Therefore, it is necessary to determine the basic quantitative indicators used to judge the advantages and disadvantages of system operation, also known as system operation indicators.

In nucleic acid queuing, we mainly focus on these indicators:

Poisson distribution

How can we accurately describe the queue state of nucleic acid detection? The commonly used distributions to describe the queuing state include Poisson distribution, deterministic distribution, exponential distribution and Erlang distribution. The distribution of nucleic acid detection residents and the distribution of service personnel at detection points can be regarded as Poisson distribution.

Poisson distribution

The most common description of random and uniform occurrence probability in life is Poisson distribution, which was published by French mathematician Simone Denis Poisson in 1838. It is used to describe the probability distribution of the number of random events in unit time.

Source: blog csdn. net

The state probability function of Poisson distribution is as follows:

As mentioned in the previous introduction, the distribution of nucleic acid detection residents and the distribution of service personnel at the detection point can be regarded as Poisson distribution, so this parameter in the formula λ Can express the average number of residents arriving per unit time, in μ Indicates the number of residents completing nucleic acid detection per unit time, then 1/ λ Indicates the average time interval of residents’ arrival, 1/ μ Indicates the average nucleic acid detection time of a resident.

add up

Considering that our cell is a multi queue and multi detection point mode mentioned earlier, for team 1, it is a single queue and single detection point. We record this queuing mode as M / M / 1 (remember the X / Y / Z?): M refers to the negative exponential distribution (Poisson distribution is a negative exponential distribution). The first m refers to the negative exponential distribution of residents’ successive arrival time with parameter. The second m refers to the negative exponential distribution of service time with parameter. The number of service desks is 1 and unlimited queuing is allowed. This is the simplest kind of queuing system.

So there are:

In the above formula, the service intensity reflects the busy degree of the system. only ρ< 1. Only the system has

On April 24, the launch conference of oppo K10 series ultra dimensional new products was officially held, and four new products were launched, including oppo K10 and oppo K10 pro, as well as oppo smart TV k9x 65 inch and oppo enco air2 pro. What are the characteristics of these oppo new products?

Let’s take a look at the current situation of oppo. According to the global smartphone shipment data report in the first quarter of 2022 released by the well-known research organization counterpoint. According to the report, oppo ranked fourth in the global mobile phone shipment ranking in the first quarter of 2022, with a market share of 10%.

Oppo is also amazing in terms of patented technology. According to relevant data, as of March 31, 2022, oppo has more than 77000 global patent applications and more than 38000 global authorizations. Among them, the number of invention patent applications exceeds 69000, and invention patent applications account for 90% of all patent applications. According to the ranking list of international patent Treaty (PCT) applications in 2021 released by the World Intellectual Property Organization (WIPO), oppo ranks sixth in the world.

Let’s take another look at the mobile phone released by oppo this time. The model is oppo K10 series mobile phone, which is divided into standard version and pro version. Among them, oppo K10 is first equipped with MediaTek Tianji 8000-max chip. This mobile phone has a high cost performance, and the price starts from 1999 yuan.

Oppo also released a smart TV k9x 65 inch, which uses 4K ultra clear hard screen and supports 1.07 billion colors. This screen is also the main selling point of this series. Oppo smart TV also promises to start without advertising.

Previously, GuoXuan high tech announced that it had reached cooperation with a large listed company in the United States on the supply of lithium iron phosphate batteries. From 2023 to 2028, the above-mentioned American enterprises are expected to purchase lithium iron phosphate batteries with a total amount of no less than 200gwh; In addition, vision power also announced that it will build a new power battery super factory in Kentucky, with a planned annual capacity of 30gwh and the potential to expand to 40gwh, so as to provide power battery products for the world’s leading car enterprises.

In the current complex trade situation, the U.S. market is a great challenge for Chinese new energy vehicles and power battery enterprises. Why do Chinese battery enterprises go to the United States to build factories? Is it time for Chinese battery enterprises to go to the United States to “dig gold”?

It is inevitable to expand the global layout

“In the American market, Ningde era must go in.” Zeng Yuqun, chairman of Ningde times, personally took the platform for the power battery to the sea and made bold remarks to resolutely enter the American market.

Up to now, foreign media reported that Ningde times is selecting a site for its North American factory. In addition, according to people familiar with the matter, in early March this year, the senior management team of Ningde era has flown to Mexico for feasibility study. In addition, the North American plant of Ningde era will produce nickel cobalt manganese ternary lithium battery and lithium iron phosphate battery at the same time, and supply them directly to Tesla and other automobile manufacturers.

It can be seen that the determination of Ningde era to enter the American power battery market has been determined and has begun to be put into action.

At present, although the soaring prices of upstream raw materials and other issues have had a certain impact on the domestic power battery market, the top battery manufacturers such as Ningde times and GuoXuan high tech have become giants in the domestic power battery field and have a very large market share.

It is understood that in 2021, Ningde era accounted for 52.1% of China’s total power battery loading, ranking first in the world for five consecutive years. However, in recent years, battery manufacturers such as BYD and China Innovation airlines have long focused on the “fat meat” of domestic power batteries, and their market share is also increasing day by day. At the same time, affected by the fluctuation of the supply chain, domestic main engine manufacturers have begun to introduce new suppliers to ensure the stability of the supply side.

At the 2022 forum of China electric vehicle hundred people’s Association, Ouyang Minggao, academician of the Chinese Academy of Sciences and vice president of China electric vehicle hundred people’s Association, said: China’s power battery capacity will reach 3000gwh in 2025, while the battery shipment is expected to be about 1200gwh in 2025, resulting in a large overcapacity.

In other words, at present, domestic power battery plants have begun to expand production capacity, but it also brings the problem of overcapacity. In order to digest the excess production capacity well, it is inevitable for power battery enterprises to expand their global layout.

Therefore, power battery head enterprises such as Ningde times and GuoXuan high tech not only play a connecting role in the industrial chain, but also shoulder the important task of how to break through the shackles of the market and explore more market increments.

So, how to solve the problem of power battery overcapacity? At present, the most direct way is to further increase the market penetration of new energy vehicles and increase the demand for power batteries. In addition, it can also enter the foreign new energy market through the battery “going to sea” to provide power batteries for foreign car enterprises.

Relatively speaking, enterprises are full of confidence in the road of “going to sea” of batteries, and they are more worthy of expectation. As a result, Chinese power battery enterprises such as Ningde times, GuoXuan high tech and vision power set up battery factories in the United States.

In this regard, industry insiders said that the global layout of power battery giants has a variety of driving factors. On the one hand, the current global automotive electrification has become a general trend, and the lack of nearby battery capacity also means greater market potential.

Therefore, domestic power battery enterprises have “gone out” one after another. The global layout of power battery giants is beneficial to adapt to the new pattern of global automobile electrification. Moreover, in recent years, especially the technological progress of domestic power battery giants has accelerated, with more confidence, it is inevitable to expand overseas markets.

On the other hand, Europe and the United States are vigorously promoting the process of electrification. Even the United States, which has been slow in action a few years ago, has issued a number of supporting policies since last year, boosting the penetration rate of American electric vehicle market from less than 5% in 2021 to 50% in 2030, accelerating local electrification.

At the same time, it has also promoted the electrification layout of new forces such as Tesla and rivian, as well as traditional car giants such as general motors, Ford, stellantis, Volkswagen, Mercedes Benz, Nissan, Hyundai and Toyota in North America, resulting in a significant increase in the demand for power batteries. Therefore, it has also attracted domestic power battery giants to build factories in the United States.

Chinese enterprises usher in a good opportunity to go global

At present, the American electric vehicle market has great potential. International power battery giants such as LG new energy, Panasonic, ski and Samsung SDI have also announced to build factories in the United States. According to rough statistics, the cumulative total investment of the above-mentioned enterprises in building factories in the United States exceeds US $20 billion (about 127.2 billion yuan).

In addition to these battery giants, start-up battery companies from Europe and the United States have also joined the competition of power battery capacity expansion in the United States.

However, at present, Korean battery companies such as LG new energy, Samsung SDI and SK on occupy most of the market share of power battery supply in the United States. However, the power battery market in the United States will not allow Korean battery companies to dominate, and will not want to rely too much on Korean batteries.

At this time, the U.S. power battery market urgently wants more foreign-funded enterprises to enter the market and break the dominance of Korean battery enterprises. Just like domestic car enterprises actively looking for the second and third supply of batteries, checks and balances and competition are the main melody of the market.

Therefore, after more players enter the market, there will be competition and enterprises will make profits from it. And for American car companies

Li Weifeng wrote: “China’s football environment is not good and how to maintain it is the common thinking of our football people. What perspective do we need to look at the problems of young players in the game, and how do we teach players to use reasonable football technology to treat the game in the game? This is the most basic knowledge for each club to assess the ability level of coaches.

It is not easy for parents of players to train their children, and it is not easy for coaches to explore players. Give children a chance to understand that he still has a lot to improve and learn in future training. Growth needs to pay a lot of costs. Cherish and maintain the cause we love! “

Is it the ardent expectation of parents or the reluctant eyes of children? Is it a new year’s Eve dinner with a table of dishes or a packed trunk? I believe that for every dream chaser who tries to run, leaving home is more to better embark on the road home. Every time I go home for the new year, I draw the strength of starting again and let people continue to work hard in the direction of their dreams.

At this time last year, the sudden epidemic completely disrupted people’s pace of life. Due to regional isolation, extended holidays, blocked rework and limited logistics, small and micro enterprises and self-employed households cannot start work normally under the action of many factors. The most ordinary people are also under the heaviest pressure of life. Today, many small and micro enterprises and self-employed households are still facing great survival pressure.

Compared with the more solid accumulation of capital resources of large and medium-sized enterprises, small and micro enterprises and self-employed households have low anti risk ability. They are more affected by work stoppage and capital pressure has soared. Some small and micro enterprises can’t afford to close down for a few months and slide to the edge of bankruptcy. Under the hard COVID-19, there is a beautiful landscape in the financial world that is warm and heartwarming.

Private banks jointly established by private enterprises show their responsibility in times of crisis, keep watch with private small and micro enterprises, take a series of assistance measures to help prevent and control the epidemic, support small and micro enterprises to resume work and production, devote themselves to building in terms of product innovation and service efficiency, and Practice the Inclusive Finance Strategy for the financing pain points of small and micro enterprises, Bring “timely rain” to the operation of small and micro enterprises and self-employed households, so that the dreams of entrepreneurs are not satisfied.

On February 28, 2021, a dream flash broadcast was staged on the air apron of Yumin bank. As a dream booster officer, the host of Jiangxi traffic radio listened to the voice of dreams over Nanchang, called for dreams and helped dreams.

How difficult is it for small and micro enterprises and self-employed households to finance and borrow?

In a sense, the business conditions of small and micro enterprises and self-employed households represent the fireworks of a city. However, small and micro businesses and covid-19 businesses are more affected by the new crown pneumonia epidemic: rent, idle, dismissal, discontinued loans, broken capital chains, lack of confidence, or even “bankruptcy and bankruptcy”.

According to the survey of small and micro finance research center of Renmin University of China in 2019, more than half of small and micro enterprises belong to catering and accommodation, cultural tourism and wholesale and retail industries. Influenced by COVID-19, most of the consumer industries such as catering, wholesale, retail and tourism have been closed almost all the last Spring Festival holiday. However, the expenses of rent, stock and wages are unavoidable, which will directly lead to the increase of the amount of liquid capital occupied by small and micro businesses. Many times, only hundreds of thousands or millions of working capital often become the “deadly straw” that kills many small and micro enterprises.

This is undoubtedly the shackle of their dreams for enthusiastic entrepreneurs. However, small and micro enterprises are in urgent need of capital recovery, but there are natural defects in applying for loans compared with large and medium-sized enterprises such as state-owned enterprises:

From a financial point of view, many small and micro enterprises have opaque financial information, do not prepare financial statements, and lack good management of cash, accounts receivable and inventory, resulting in the phenomenon of idle funds and tight funds. It is difficult for banks to grasp the real operation status of small and micro enterprises, resulting in banks’ reluctance to lend to small and micro enterprises.

From the perspective of management, China’s small and micro enterprises are generally family enterprises or individual industrial and commercial households, and generally have not established a standardized modern enterprise management system and perfect corporate governance structure. As a result, the decision-making in the operation of small and micro enterprises depends more on the actual controller, in terms of personnel, capital, technology and so on.

From the perspective of business strength, most small and micro enterprises have small scale, few personnel, limited assets, poor business stability and weak anti risk ability. According to statistics, China’s small and micro enterprises and group enterprises generally have a short life span of about 2 to 5 years and 7 to 8 years, while European and American enterprises have an average life span of 40 years. At the same time, due to limited assets, small and micro enterprises generally can not provide sufficient value collateral to commercial banks, so they can not meet the bank’s loan conditions.

Under this epidemic, in order to fight the battle of “resumption of work and production”, the state has successively issued relevant policies to gradually tilt the balance of preferential policies for loans towards small and micro enterprises. One of the important items is “solving the difficulty of loans and unblocking financing channels”. Various banking institutions have responded to the call and launched measures such as remote loans, revolving loans and extending the recovery time limit to increase credit support for small and micro enterprises.

The 2019-2020 report on the financing status of small and micro enterprises shows that private banks are an important financing channel for small and micro operators. According to the characteristics of small and micro enterprises, in the current special period of epidemic prevention and control, how should we carry out the credit business of small and micro enterprises, awaken the economic vitality of small and micro enterprises, cross the threshold of “epidemic” and earnestly implement various credit support policies for small and micro enterprises?

Credit products are featured, localized and accurate. Private banks open a door for small and micro enterprises and self-employed households

September 2020, Jiangxi, the old revolutionary base. In Wuyang Town, Ruijin City, the old capital of red, a pig farmer tasted fresh. Through the intelligent credit approval system, he successfully obtained the first 1 million yuan pig pen construction loan credit from Yumin bank online in real time. This fund is undoubtedly a timely help to the township farmers in the epidemic, which solves the urgent need for farmers to expand breeding.

Yumin bank is the first private bank in Jiangxi Province initiated by private capital. Facing the impact of covid-19 pneumonia, Yumin bank has implemented the contactless and real-time financial services in the light of the actual situation in Jiangxi. The four products of the business, including Yu Yu, Nong Yu, Jin Yudai and Yu Yu, all adopt online approval and unsecured credit loans.

Among them, “Shangyu loan” is for owners of small, medium and micro enterprises; “Agricultural surplus loan” serves agricultural enterprises and farmers in County township areas to support the turnover of agricultural production and operation; “Jinyu loan” is a consumer loan product launched for individual customers; “Tax surplus loan” serves small and micro business owners and individual industrial and commercial households with continuous tax payment records.

Several types of characteristic credit fully cover the three core areas of the real economy: small, medium-sized and micro enterprise operation, agriculture and consumption, and help open the capillaries of the regional economy

From January 21, 2020 to 24:00 on March 5, 2022, Henan Province has reported 2685 confirmed cases (2509 cases locally and 176 cases imported from abroad), 24 hospitalized cases (1 case locally and 23 cases imported from abroad), and 40 asymptomatic infections still under medical observation (40 cases imported from abroad). A total of 64110 close contacts were tracked and 267 close contacts were being observed.

Zhang Jie microblogging voice: you say yours, I break mine!

Sina entertainment news on May 24, Zhang Jie’s microblog said: “you say yours, I break mine!” Seems to respond to the recent group ridicule. Following Zhang Jie’s aggrieved statement on creation 101, Zhang Jie’s dance video was teased and ridiculed by the group.

On the 21st, Zhang Jie released a dance video, but it was teased by people and ridiculed by satirical groups. In this regard, the official microblog of Zhang Jie studio issued a solemn statement and wrote: “the network is not an illegal place outside, so please pay attention to the identification of the majority of network users and stop the dissemination of relevant infringing pictures and videos. We resolutely defend our legitimate rights and interests with legal weapons and will not tolerate it!”

Netizens left messages one after another: “are you going to start fighting back, little brother? We are all your backing”, “forget the gossip, the darker the sky is, the brighter the stars are”, “we speak with strength”.