I Have a Research Support System

In a donut shop, the window is filled with donuts.

Each donut is not small in size, with an outer diameter of about 18 cm, an inner diameter of about 10 cm, and a thickness of about 5 cm. There are black or white chocolates on it, as well as various pattern embellishments.

There is a blackboard-style menu on the rear wall, with the names and prices of various products written on it. There are three columns in total. On the left is the donut item, in the middle is the coffee drink item, and on the right is the set menu.

The cheapest donut is only US$0.59 each, and the more expensive ones are US$0.99 and US$1.99; coffee starts at US$0.99; set meals are priced at US$1.39, US$1.59, and US$2.99, and some are more expensive, but the price Generally within $4.

After seeing the price, Xu Qiu was surprised and said, The donuts look quite big, so they're so cheap?

Han Jiaying nodded, and said in agreement, Yes, after Mr. Wei treated guests to the Mexican food yesterday, I thought that the prices in the beautiful country were so expensive.

Wu Feifei glanced at the two fat women: It's just that the donuts are a bit high in calories, so it's easy to become fat.

Xu Qiu tentatively said, Then shall we try?

Han Jiaying hesitated for a while, then said, Try it, it's already here.

Wu Feifei smelled the aroma of baking around, but she couldn't hold back the temptation: Well, it's all here...

In the end, the three ordered three set meals and a separate snack, and the total cost was US$10.44. The prices on the menu did not include tax, and they had to pay an additional 10% tax.

However, although this kind of small shop is also in the catering industry, because there is no service, there is no need to pay extra service tips.

A total of six donuts, three cups of coffee, and a small snack, add up to about $10.

From this point of view, the Shaxian Snacks-level food and beverages in the beautiful country are still cheaper than domestic ones.

Investigating the reason, Xu Qiu estimated that in addition to government subsidies, it should be mainly due to the gift of industrial production.

Pretty Country basically only produces a few food crops that are easy to grow in large quantities. From sowing, to harvesting, to subsequent processing, and making products, there is a set of mature industrialized processes, just like cooking bags in the food delivery industry. Same.

The high price of domestic food, on the one hand, is due to the variety of crops, which means that the cost of each food crop will increase accordingly; on the other hand, it is also because of the lack of mechanization .

In fact, purely from a technical point of view, it is definitely not a big problem if the country wants to promote mechanization.

Because these automated machines are not complicated in principle, even if the domestic technology lags behind that of Europe and the United States, it is possible to imitate a first-generation machine to achieve 70% or 80% of the functions, and then slowly improve it.

A big problem is that mechanization will take away jobs from farmers, who, because they are generally less educated, may not be able to do anything but physical work such as farming.

We must know that there are a lot of farmers who grow flowers. According to the sixth national census, the population living in rural areas accounts for 50.32% of the total population, and there are 674 million rural residents. According to the household registration system, there are about 900 million farmers.

The total number of flower farmers is even twice as large as the total population of the beautiful country. Once mechanization is implemented, there will be a large number of unemployed people, which will cause instability.

When people are busy, it is enough to have a bite to eat. If they are free, they will ask for more, but the total resources of society are limited, and it is impossible to satisfy everyone.

This is also the current situation of domestic fragmentation. Most talents have just escaped poverty, and a small number of people living in first- and second-tier cities have become the part of the get rich first. Their living standards have actually caught up with developed countries.

After waiting for a few minutes, Xu Qiu got the meal and found a table with Han Jiaying and Wu Feifei to eat and drink.

As for coffee, there is nothing to say, Xu Qiu can't quite taste the difference in the specific taste of different coffees.

Just like a computer program, when a cup of coffee is drunk into Xu Qiu's mouth, it will only output two answers, good or bad.

The coffee in the beautiful country, Xu Qiu has not tasted better for the time being, because it is too bitter, and he is not used to drinking it.

The taste of the donuts is still good, but it is a bit greasy, and the oil and sugar content should be very high.

It's okay to eat one or two a day, but if you eat more, it may be more unacceptable.

With two donuts and a cup of coffee, Xu Qiu was about sixty percent full.

However, he doesn't plan to forage for food anymore. He doesn't need to do any physical work to attend the meeting, and the energy consumption is relatively slow.

After finishing lunch, the three of them returned to the hotel and took a short rest.

At 12:50 noon, Xu Qiu and the others went to the venue together.

The venue of the MRS Convention and Exhibition Center is very large, mainly divided into two areas, A and B. There are more than 50 lecture halls in total, and reports will be held at the same time.

At this time, the venue was already crowded with people.

It seemed that there were not many people in the morning, probably because they came to register close to lunch time, and there was no valuable report, so most of them left directly after completing the registration.

Xu Qiu roughly estimated the number of participants. There are more than 50 lecture halls, and each lecture hall has an average of 20 reports per day. The meeting lasts for 5 days, and the total number of reports is 5,000. There must be tens of thousands of people.

After all, the MRS conference is considered the most influential conference in the field of materials science in the world, and it is not an exaggeration to have tens of thousands of people attending the conference.

In fact, the number of participants in this year's MRS spring meeting may be less than in previous years.

Because the MRS spring conference was held in San Francisco in the past few years, it is more convenient for Asian scholars to come to the conference. Whether it is a flower grower, a neon country or a kimchi country, there are usually direct flights to San Francisco.

And thinking of Phoenix is ​​a little troublesome, major Asian countries generally do not have direct flights to Phoenix

Xu Qiu and the others went to Los Angeles first, and then to Phoenix. Some Asian scholars might not come because they were afraid of trouble.

In addition, the MRS fall meeting is usually held in Boston, and I heard that the lobster there is quite famous.

It seems that there are no special dishes that can be sold in Phoenix.

But having said that, the mainstream meals in the beautiful country are also fast food, basically burgers, fried chicken, pizza, noodles with sauce, wraps, sandwiches, hot dogs, French fries, etc. There is not much choice, and they are still domestic. There are more choices of dishes.

It's no wonder Tian Qing asked them to bring some eight-treasure porridge and instant noodles. It's good to eat high-calorie fast food like Meiguo once or twice, but if you eat it all at once, it may be difficult to get used to it for a while.

After the three arrived at the venue, Wu Feifei acted alone to listen to reports related to perovskite photovoltaics.

Xu Qiu and Han Jiaying acted together, because there is no report related to organic photovoltaics today, so they plan to dig for gold from the reports weakly related to organic photovoltaics.

The main reason is to get a feel for the atmosphere. After all, Xu Qiu will also report on the 6th, so he still needs to familiarize himself with the reporting process in advance.

At noon, Xu Qiu studied the MRS conference report in advance, and finally selected today's goal as a series of reports on the theme of Thin Film Compound Semiconductor Photovoltaic, which will be held in the lecture hall A206.

There are a lot of signs on the walls of the venue, similar to A101-108→, ←A109-A117, and many signs and slogans saying no photography, video recording are posted.

Xu Qiu had learned from Wei Xingsi before that it was forbidden to take pictures during the MRS meeting, so they all prepared experiment notebooks and pens for recording in advance.

Although if you are caught taking pictures at the venue, there is a high probability that you will not be expelled directly, but basically people who can participate in the meeting are people with a reputation. It is still quite embarrassing to be caught when this kind of thing happens.

The two followed the signs on the wall and walked into lecture hall A206.

The lecture hall here is two rooms combined into one, the area is quite large, there are about a hundred chairs, and the scene is almost 80% full. Xu Qiu and Han Jiaying found a seat at the back sit down.

After waiting for a while, at one o'clock, the meeting officially started.

A pretty Caucasian woman, as the chairman of the meeting, began to introduce the general content of the next report, the background of the reporter and other information, a bit similar to the host.

However, those who can become the chairman of the conference will not be vases. They are often scholars who are well-known in a certain field, at least with a name and surname, and they will not mix too badly.

There are relatively few girls who stay in the academic circle after graduating from a Ph. One, after all, almost 80% of the participants are men.

Like other lecture halls that passed by halfway, some of them had less than 20% occupancy.

After the chairman of the meeting finished his introduction and left, people's eyes turned to the reporter.

This is a Caucasian man from Colorado State University, named Alexandra Bothwell, about 50+ years old, with some gray hair on the sideburns. The content of the report is JV and QE—Basics of Measurement for Photovoltaic Applications and Introductory Equipment Modeling for Advanced Analysis .

His pronunciation is slightly accented, and he speaks very fast: I will introduce the test principles, measurement settings, and key points of data analysis of the J-V curve and QE curve...

There are extended applications of JV curve and QE curve data in the quantification of photovoltaic performance losses, including a combination of measurements and fundamental photovoltaic concepts, such as the Shockley-Queisser limit and the non-ideal diode equation, to understand the main loss mechanisms of solar cells...

A basic overview of SCAPS 1D modeling that can be used as an auxiliary analytical tool to complement the explanation of device operation...

Xu Qiu listened attentively to the lecture the whole time, and after the 15-minute report was over, he drew a map in the experiment notebook.

This kind of map can only be understood by oneself in a short period of time, and other people or myself after a few days may not be able to understand its meaning.

There is no way, the venue cannot take pictures, and the other party speaks too fast, so we can only quickly record the main points of others' narration, and then translate them into coherent text.

It has to be said that the first person to report is still of a certain standard, adding some basic knowledge to Xu Qiu.

In the past, such as the J-V curve and QE curve, Xu Qiu only used instruments and data analysis, but he had only a half-knowledge of some basic and conceptual things.

It's a bit like knowing a theorem and using it often, but not knowing the complete derivation of the theorem.

Now, after listening to this report, it can be regarded as a shortcoming.

After that, there was a 10-minute Q\u0026A session.

Because the people listening to the report span a wide range of fields, the questions they ask also span a wide range. They usually ask whatever comes to mind, which is a bit like chatting among friends.

If the reporter on the stage can answer these questions, he will respond positively; if he encounters a question that cannot be answered, the reporter is also very frank and bluntly expresses that he does not understand it.

Generally speaking, the atmosphere of the venue was quite harmonious, and there was no situation where the favorite bosses fought each other.

Xu Qiu heard that YANG YANG, a leader in the field of organic photovoltaics, quarreled with another leader at the MRS venue because of disagreements in ideas.

But the reason why this kind of thing is talked about by people is mainly because the probability of it happening is not high.

Most of the time, academic exchanges are relatively friendly.

In the second session, the reporter was a Qingjiao scholar from Zhejiang University, male, and the topic was Raman Spectroscopy Characterization from Device Structure to Defect Engineering. A lot of gains, because the difference between the fields of the two is really big.

In the third session, the reporter was a white man from the Netherlands Organization for Applied Scientific Research. The theme was Serial Equipment and Advanced Measurement.

After the third session, there was a half-hour break. Xu Qiu and Han Jiaying did not leave the venue. Instead, they sat down and shared what they had learned from the report just now, and transformed and sorted out the previously recorded content.

In the fourth session, the reporter was a man from Neon Country, from Hokkaido University. The theme was Photoluminescence Characterization of Photovoltaic Materials and Devices——From Material Properties to Loss Analysis. This man also had a special accent. It sounds like a lot of effort, Xu Qiu can only infer the specific content of the other party's talk based on the PPT.

Although domestic English is sometimes referred to as Chinglish, in fact, the English level of scholars who have gone out from flower growers is generally quite good, far better than other countries in Asia, such as the neon country, kimchi country and curry country. .

In the fifth session, the reporter was a black man, a professor from Stanford University. The topic was High-throughput single-source scribing mechanism for optimal interconnection in thin-film photovoltaic modules. The report was good, although The field of research is different from Xu Qiu's, but Xu Qiu can still learn something from it.

Due to racial discrimination, most of the black people who are able to stand out are very powerful, and their moisture is relatively small.

In the sixth scene, the reporter was a student from Curry Country. As soon as he spoke, half of the people in the venue left in an instant. Xu Qiu and Han Jiaying also looked at each other and broke away decisively.