Chapter 493: The beautiful country

I have a scientific research assistance system. Volume 493 Beautiful Country Trip Eight Donuts shop, the window is full of donuts.
　　The size of each donut is not small, the outer diameter is about 18 cm, the inner diameter is about 10 cm, and the thickness is about 5 cm. There are black or white chocolates on it and various patterns.
There is a blackboard-style menu on the wall behind 　　 with the names and prices of various commodities written on it. There are three columns. The left side is a single product of donuts, the middle is a single product of coffee and beverages, and the right is a set menu.
The cheapest doughnut is only $0.59, and the more expensive ones start at $0.99 and $1.99; coffee starts at $0.99; the set menu is $1.39, 1.59, and 2.99 dollars, and some are more expensive, but the price is Generally within 4 dollars.
　　 After seeing the price, Xu Qiu said in surprise,
Doesn’t donuts look quite big, they are so cheap?

　　Han Jiaying nodded, and replied: "Yes, after Teacher Wei's dinner of Mexican food yesterday, I thought the prices in beautiful countries are so expensive."
　　 Wu Feifei's gaze swept over the two fat women: "It's just that the calories of donuts are a bit high, and it's easy to eat fat people."
　　 Xu Qiu tentatively asked: "Then we are going to try?"
　　 Han Jiaying hesitated for a while, and said, "Try it, it's all here."
　　 Wu Feifei smelled the aroma of baking around, and did not resist the temptation: "Well, it's all here..."
　　 In the end, the three ordered three set meals and a single snack. The total consumption was $10.44. The price on the menu was tax-free and an additional 10% tax was paid.
　　 However, although small shops like this are also in the catering industry, they do not need to pay extra service tips because there is no "service".
　　 There are six donuts, three cups of coffee, and a small snack, which adds up to almost $10.
　　 From this point of view, the
Shaxian Snacks
-level catering in the beautiful country is still cheaper than in China.
　　 The reason for this is that Xu Qiu estimated that apart from government subsidies, it should mainly be attributed to 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, they all have a mature industrialization process, just like the food package in the food delivery industry. same.
However, domestic food prices are high. On the one hand, the variety of crops is diversified, and all kinds of food crops can be eaten, which means that the cost of each food crop will increase accordingly; on the other hand, it is also because there is no large-scale mechanization in the country. .
　　 In fact, from a technical standpoint alone, it is certainly not a big problem if China wants to promote mechanization.
　　 Because these automated machines are not complicated in principle, even if the domestic technology lags behind Europe and the United States, you can first imitate a first-generation machine to achieve 70%, 80% of the functions, and then slowly improve it.
　　 A big problem is that mechanization will deprive farmers of their jobs, and because farmers are generally less educated, they may not be able to do anything except farming and other physical tasks.
　　 You 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. From the household registration system, there are approximately 900 million farmers.
　　 The total number of flower-planting farmers is even double the total population of a beautiful country. Once mechanization is implemented, a large number of unemployed people will appear, which will breed instability.
　　 When people are busy, they can have a bite of food. If they are free, they will ask for more. However, the total resources of society are limited and it is impossible for everyone to be satisfied.
　　 This is also the current situation of domestic division. Most talents have just gotten out of poverty. A small group of people living in first- and second-tier cities have become those who "get rich first". Their living standards have actually caught up with the pace of developed countries.
　　 After waiting for a few minutes, Xu Qiu got the food, and found a table with Han Jiaying and Wu Feifei to eat and drink.
　　Coffee, there is nothing to say, Xu Qiu can't taste the difference in specific taste between different coffees.
　　 Just like a computer program, a cup of coffee, when you drink Xu Qiu’s mouth, will only output two answers, good and bad.
　　Coffee from the beautiful country, Xu Qiu hasn't had a better coffee yet, because it's too bitter and he is not used to it.
The taste of 　　 doughnuts 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. If you eat a lot, it might be more difficult to accept.
try{mad1('gad2');}catch(ex){}　　 Two donuts, add a cup of coffee to his belly, Xu Qiu probably ate six minutes full.
　　 But he doesn't plan to go foraging anymore, he doesn't need to do any physical work to attend the meeting, and his energy consumption is slower.
　　 settled for lunch, the three returned to the hotel and briefly rested for a while.
　　 By 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 carried out at the same time.
　　 At this time, the venue was already crowded.
　　 It seems that there are not many people in the morning. It may be because they came to register closer to the lunch hour, and there is no valuable report, so most people left directly after completing the registration.
Xu Qiu roughly estimated the number of participants. There are more than 50 lecture halls, each with an average of 20 reports per day. The meeting lasts for 5 days, and the total number of reports is 5000. If you count the poster exhibition, you will always attend the meeting. There must be tens of thousands of personnel.
　　 After all, the MRS conference is regarded as the most influential conference in the field of materials science in the world, and it is not an exaggeration to attend the conference by 10,000 people.
　　 Actually, 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 planter, a neon country or a kimchi country, there are usually direct flights to San Francisco.
　　 Thinking of Phoenix, it’s a little troublesome. Major Asian countries generally don’t 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 here because they are afraid of trouble.
　　 In addition, for the MRS autumn meeting, the venue is usually in Boston. I heard that the lobster over there is quite famous.
　　 Phoenix doesn't seem to have any special dishes that can be sold.
But having said that, the mainstream meals in the beautiful country are also fast food, basically burgers, fried chicken, pizza, sauce noodles, burritos, sandwiches, hot dogs, French fries, etc. There is not much choice but domestic ones. There are many choices of dishes.
　　 It’s no wonder Tian Qing asked them to bring some eight-treasure porridge and instant noodles. The high-calorie fast food like Meiguo would be good if one or two meals occasionally be eaten. If you eat all meals, you may find it difficult to adapt for a while.
　　 After the three came to the venue, Wu Feifei acted alone and went to listen to the report on perovskite photovoltaics.
　　 Xu Qiu and Han Jiaying acted together. Because there is no strong report related to organic photovoltaics today, they plan to "pan for gold" from reports that are weakly related to organic photovoltaics.
　　 is mainly to feel the atmosphere, after all, after Xu Qiu, he will also report on the 6th, and he still needs to familiarize himself with the report process in advance.
　　 At noon, Xu Qiu studied the MRS meeting report in advance, and finally selected today’s goal as a series of reports on "Thin Film Composite Semiconductor Photovoltaics", located in the A206 lecture hall.
　　 There are a lot of signs on the walls of the venue, similar to "A101-108→", "←A109-A117", and many signs and slogans that "photograph or video are prohibited" are posted.
　　 Xu Qiu learned from Wei Xingsi before that photos are not allowed during the MRS meeting, so they have prepared experimental notebooks and pens for recording in advance.
　　Although there is a high probability that if you are caught taking pictures at the venue, you will not be directly expelled, but most of the people who can attend the meeting are people with heads and faces. It is always embarrassing to be caught in this kind of thing.
　　 The two followed the signs on the wall and walked into the A206 lecture hall.
The lecture hall here is a combination of two rooms. The area is quite large. There are about a hundred chairs. The scene is almost 80% full. Xu Qiu and Han Jiaying found a back position. sit down.
　　 waited a while, at one o'clock, the meeting officially began.
　　 A pretty white woman, as the chairperson 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 be the chairperson of the conference will not be a vase. They are often scholars with some reputation in a field, at least they also have a name and a surname, and they will not be too bad.
There are relatively few girls who stay in the academic circle after doctoral degree. It is rare to be the chairperson of the conference. If you add a high-profile appearance, it will be even more rare. Xu Qiu guessed that this is probably the reason why this session is full. One, after all, almost 80% of the participants are men.
　　 Like other lecture halls passing by, some of them have less than 20% attendance.
　　 After the conference chairperson finished the introduction and exited, people's attention shifted to the reporter.
try{mad1('gad2');}catch(ex){}　　 This is a white man from Colorado State University, his name is AlexandraBothwell, his age is about 50+, and his hair and sideburns are a little gray. The content of the report is "JV and QE—Measurement basis for photovoltaic applications and entry-level equipment modeling for advanced analysis".
　　 His pronunciation is slightly accented, and his speaking speed is extremely fast: "I will next introduce the test principles, measurement settings, and data analysis points of the J-V curve and QE curve..."
　　 "JV curve and QE curve data have extended applications in the quantification of photovoltaic performance loss, including the use of measurement results and basic photovoltaic concepts, such as the combination of Shockley-Queisser limit and non-ideal diode equation, to understand the main loss mechanism of solar cells..."
　　 "The basic overview of SCAPS1D modeling can be used as an auxiliary analysis tool to supplement the explanation of equipment operation..."
　　 Xu Qiu focused on listening carefully throughout the whole process. After the 15-minute report was over, he drew a "map" on the experimental notebook.
　　 This kind of "map" can only be understood in a short period of time, and other people or myself in a few days may not know its meaning.
　　 There is no way. You can’t take pictures in the venue, and the other party speaks too fast. They can only quickly record the main points of others' narration, and then translate them into coherent text.
　　 I have to say that the first person to report is still of a certain level, and he has added some basic knowledge to Xu Qiu.
　　 It used to be like J-V curve and QE curve. Xu Qiu only uses instruments and data analysis, but he has a little understanding of some basic and conceptual things.
　　 is a bit similar to knowing a theorem and often using it, but not knowing the complete derivation process of the theorem.
　　 Now, after listening to this report, it can be regarded as a shortcoming.
After 　　, there is a 10-minute questioning session.
　　Because the people who listen to the report have a relatively large range of fields, they also ask a relatively large range of questions. They usually ask what they think of, which is a bit like a small chat between friends.
　　If the reporter on the stage can answer these questions, they will respond positively; if they encounter a question that cannot be answered, the reporter is also very open and bluntly expresses that they don't understand it.
　　 Generally speaking, the atmosphere of the venue is relatively harmonious, and there is no situation where the big brothers who like to hear and hear each other are forced to each other.
　　 Xu Qiu heard that in previous years, YANG YANG, a big man in the field of organic photovoltaics, quarreled with another big man at the MRS venue because of a discord in his 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 presenter was a green pepper scholar from Zhejiang University, a male, and the topic was "Raman Spectroscopic Characterization from Device Structure to Defect Engineering". This person spoke well in English, but Xu Qiu didn't feel too much after listening. A lot of gains, because the difference between the two fields is quite big.
　　 In the third session, the presenter was a white man from the Netherlands Applied Scientific Research Organization. The theme was "Tandem Equipment and Advanced Measurement". This person had a heavy accent, which sounded a bit difficult. Xu Qiu thought of Finnish Ronald.
　　 After the end of the third scene, there was a half-hour break. Xu Qiu and Han Jiaying did not leave the venue. They sat in the same place and exchanged what they learned from the report, and converted and sorted out the previously recorded content.
In the fourth session, the reporter is a neon man from Hokkaido University. The topic is "Photoluminescence Characterization of Photovoltaic Materials and Devices-From Material Performance to Loss Analysis". This person also has a special accent when he speaks. Listen As the thief struggled, Xu Qiu could only use the PPT to infer the specific content of the other party's narration.
Although domestic English is sometimes referred to as Chinglish, in fact, scholars who go out from flower growers are generally able to speak their English skills, far better than other Asian countries, such as the neon country, the kimchi country, and the curry country. .
In the fifth session, the presenter was a black man, a professor from Stanford University. The topic was "High-throughput single-source scribing mechanism for the best interconnection in thin-film photovoltaic modules". The report is still good, although The research field is different from Xu Qiu, but Xu Qiu can still learn something from it.
　　 Because of racial discrimination, most of the blacks who are able to get ahead are very powerful and relatively low in water.
　　 In the sixth scene, the reporter was a student from Curry Country. As soon as he spoke, half of the meeting was gone. Xu Qiu and Han Jiaying also looked at each other, and they didn't.