The inspirational drama "Love Jewelry", starring Wang Lin, Loura and Nikita, will be launched on the 24th of this month. Three actresses who have created classic screen roles gather for the first time, bringing you a drama in which family love and dreams are intertwined. Song Qi, played by Nikita, can be described as a realistic version of Cinderella. In the play, Lacrimosa’s "little daughter-in-law" realizes a gorgeous counterattack every day and turns into a "big woman" with a happy career and family.

　　In this play, Song Qi, played by Nikita, comes from a poor family, but in order to realize her dream, she fought back all the way and became a jewelry designer through unremitting efforts. While realizing self-worth, I also gained sweet love.

　　However, life will not always be smooth sailing. Married life is the biggest challenge that Nikita plays "Song Qi". For the harmony of love and family, she indulges her husband everywhere, and at the same time, she has to endure the cynicism of her mother-in-law, Wang Lin, the "Snow Aunt". It can be said that she is trying to survive in the cracks. Nikita said frankly that he was either crying or preparing to cry when filming the play, and he was "Lacrimosa" every day. For crying, Nikita joked: My eyes have turned into faucets, and tears will come.

　　At present, "Love Jewelry" is scheduled to be broadcast on Jiangxi Satellite TV in prime time on November 24th, expecting Nikita to recreate the image of "a different kind woman" after "Niu Shurong" in "The War of Two Women".　　　　　　　　　　　　

Not long ago, Tesla crashed into the tank 300. Although it was finally characterized as "misoperation", it still caused many people to vomit about Tesla’s single pedal mode. But in fact, Tesla’s models still have brake pedals, and the "single pedal mode" that many people on the Internet spit out is actually a spit on Tesla’s "kinetic energy recovery technology", or more specifically, a spit on Tesla’s cancellation of the "kinetic energy recovery mode strength adjustment function".

What is the single pedal mode?

From the clutch, brake and throttle of manual transmission to the brake and throttle of automatic transmission, and then to the new energy vehicle, the car can be controlled only by the switch. In the propaganda of some new energy vehicle manufacturers, we can see such things: the single pedal mode not only changes the driving mode of the owners, but also changes the sense of anxiety and leg fatigue when driving in urban congestion.

The single pedal mode was originally a technology used in racing cars. As the name implies, the acceleration and braking operations of vehicles were completed by one accelerator pedal. Of course, the single pedal mode of a normal private car actually has two pedals, one accelerator and one brake. Step on the accelerator to accelerate, release the accelerator to slow down, and use a pedal to realize the functions of acceleration and deceleration. In the new energy vehicle, the single pedal mode represents the kinetic energy recovery technology, which recovers energy by loosening the throttle and then carries out a reverse charging.

Advantages and disadvantages of kinetic energy recovery

Kinetic energy recovery technology can effectively extend the battery life and increase the cruising range of new energy vehicles, at the same time, it can also reduce the fatigue of the owner’s leg and relax the other foot. But from another point of view, the change of driving habits brought about by the simplification of driving mode also has great security risks.

Different from the three-pedal driving mode of manual transmission to the two-pedal driving mode of automatic transmission, although the clutch pedal operation is missing, the acceleration and braking operations are still independently operated, while the single-pedal mode, although the brake pedal is still effective, gives priority to encouraging the owner to rely on the accelerator pedal to complete the acceleration and braking operation. In the single pedal mode, only sudden braking requires stepping on the accelerator, while the rest of the deceleration is completed by loosening the accelerator, and the strength depends on "habit". In case of an emergency, it is easy for some car owners to make mistakes. Should we use a loose pedal or a brake to slow down?

Fortunately, the single pedal mode of most private cars can decide whether to use the kinetic energy recovery function by adjusting the deceleration of the throttle. At one time, many Tesla owners adjusted the deceleration of the single pedal mode to the minimum to get the experience equivalent to the double pedal. Similarly, the kinetic energy recovery function in this mode is basically equal to nothing.

What is Tesla’s problem?

Tesla’s problem is that it cancels the "adjustment of kinetic energy recovery", which is equivalent to directly depriving users of their right to choose, so that all Tesla owners can only use "high kinetic energy recovery", that is, mandatory single pedal mode. Although the brakes are still there, not all Tesla owners like the driving experience of single pedal mode.

summary

Tesla’s cancellation of the dynamic adjustment function of "kinetic energy recovery" is obviously not good for the owner. It not only cancels the option of new owners, but also makes new owners get used to the single pedal mode, which increases the learning cost and the risk of misoperation, and also reduces the driving experience. The so-called relieving leg fatigue in single pedal mode has no practical significance, because as long as there is a brake pedal, your left foot can’t leave the brake pedal. Since the posture will not change, how can you relieve leg fatigue?

But for Tesla, there are many benefits to canceling this function. That is, it cultivates users’ habits and increases the learning cost for users to choose other brands; It can also reduce the CRBS function. After the compulsory kinetic energy recovery, the battery life of Tesla models will also be enhanced, which can be said to be harmless. Many people think that this is a reason for Tesla to cancel the dashboard, which is entirely based on cost saving, not on consumer experience, just like Apple’s mobile phone cancels the charger for environmental protection. What do you think?

Editor’s Note: 2022 is the year of the 20th National Congress of the Communist Party of China and the centenary of the founding of the Communist Youth League of China. A nation will prosper only when its young people thrive If the younger generation has ideals, skills and responsibilities, the country will have a future and the nation will have hope. Red Net Moment News will launch the column "Strugglers are Youth" from now on, telling how the contemporary youth passed the torch of a century of youth, and what kind of youthful blood and passion they used to meet the party’s 20 th victory.

Xin Yang, Professor and Doctoral Supervisor, School of Electrical and Information Engineering, Hunan University.

Red Net News Reporter Liu Zhixiong Zhu Liping Intern Hu Xinghai Changsha Report

If the integrated circuit field represented by CPU is the "brain" of modern equipment, then the power semiconductor chip is the "heart" that provides power. After returning from Cambridge University, Xin Yang, a professor at the School of Electrical and Information Engineering of Hunan University, devoted himself to the research of power semiconductors. He wanted to build "China Core".

"Our country was 30 years behind in this respect and was stuck in the neck for too long." Xin Yang said with emotion.

Xin Yang’s concern about power semiconductors stems from a teacher’s words during his undergraduate period. "Power semiconductors are the core of electric energy conversion, and a generation of power semiconductor chips determines the performance of a generation of equipment." It also originated from Xin Yang’s "China Heart". Since childhood, parents have taught Xin Yang to be an indispensable talent for the country.

Previously, the research results of the subject with Xin Yang as the first author were published in a top international academic journal of physics. This achievement provides a new idea for solving the serious oscillation problem of new power semiconductor.

"This achievement can give full play to the advantages of fast switching speed and low loss of the third generation semiconductor devices, which is of great significance for the development of high power and extremely high power density converter equipment." Xin Yang introduced.

Semiconductor components used in experiments in Xin Yang.

Power semiconductors are widely used, ranging from high-speed trains to mobile phone chargers.

"Almost everything involving electric energy conversion requires the participation of power semiconductors." Xin Yang said, "But our country once lagged far behind Europe in power semiconductor devices including IGBT (Insulated Gate Bipolar Transistor)."

IGBT has long been monopolized by developed countries. In 2009, in order to learn advanced semiconductor knowledge, Xin Yang studied for master’s degree and doctor’s degree in Imperial College London and Cambridge University.

During his stay at Cambridge University, Xin Yang firmly decided to return to China in contact with CRRC Zhuzhou Institute and related companies. "Many of our own technologies are not advanced, so we have to look at others’ faces. That feels terrible. " Xin Yang said, "At that time, I felt that the country urgently needed this technology, and it was time for me to realize my self-worth and serve the motherland."

Yang Xin takes students to work in the laboratory.

In 2015, Xin Yang returned to his native Hunan from Britain. In 2018, he was hired as a professor and doctoral supervisor at the School of Electrical and Information Engineering of Hunan University. Hunan University’s relatively complete incentive system for young teachers and the free and open academic environment at the foot of Yuelu Mountain have given Xin Yang great impetus.

In recent years, Xin Yang has presided over or participated in several national scientific research projects, published more than 40 high-level papers and applied for more than 20 invention patents.

"I went out with an initial intention to study for my country. After I came back, I felt that the country, especially Hunan, attached importance to talents. Only by redoubling efforts and making achievements can we live up to the expectations of the party and the people." During the conversation, Xin Yang said many times that he wanted to contribute to the country’s breakthrough in key technologies.

In Xin Yang’s view, his academic achievements can not be separated from the support of relevant national policies. He was selected into the relevant national talent plan, and his learning experience in the team of Luo An, an academician of China Academy of Engineering, also benefited from the Hunan Young Talents Support Program.

Xin Yang is with his students.

Nowadays, the importance of chips to modern industry is becoming more and more prominent, and talents are the key to technological leadership. Xin Yang pays special attention to the matter of taking students, and his latest research results include many master students. "Academician Luo An has given me a lot of help. As a teacher, I should also teach my students what I have learned without reservation. The happiest thing is that my students are better than me academically."

In the next six months to a year, Xin Yang will focus on building a new reliability evaluation method for power semiconductors. "At present, the evaluation of power semiconductors is still relatively extensive. We hope to reach the degree of calculation reliability and know the service life of IGBT components more accurately, and then deduce more advanced and reliable power semiconductor packaging technology."

In addition to constantly pursuing the optimization of chip performance indicators, looking to the future, Xin Yang wants to make some subversive achievements in originality theory. "Time is still tight." Xin Yang ridiculed his increasingly backward hairline. After devoting himself to scientific research, Xin Yang almost had no entertainment activities. "But doing research with students is very happy, and I don’t feel tired when I work overtime."

"I hope that when the country stands at the forefront of the world in the field of power semiconductors one day, I can be proud to have contributed a little to it." Xin Yang said.