What are the advantages and disadvantages of Shanghai and Shenzhen? What are their characteristics? I want to analyze Shanghai's position in the urban system of China from the perspective of urban geography. (1) Shanghai's urban centrality ranks first in the country. Centrality refers to the relative importance of a city serving other places, and it is an important indicator to measure the level of urban functions. Domestic literature often confuses the centrality of a city (the relative importance of external services) and the nodal nature of a city (the absolute scale of each factor). We use three categories of *** 14 elements, namely, labor force index, mobility index and openness index, to show the centrality of urban occupational composition, spatial interaction and opening up respectively. Using principal component analysis to synthesize three groups of centrality indexes, the comprehensive centrality index of the city is obtained. The lengthy analysis process is omitted here, and the conclusion is that Shanghai's centrality index (5.34) is higher than Beijing's (4.82), ranking first and second in the country, far higher than all other cities, and it is the highest ranked central city in Chinese mainland. Guangzhou (3.20) and Shenzhen (3.00) ranked third and fourth with close centrality index, and * * * together constituted the central city of South China (Figure 1)4. The centrality of 223 cities above prefecture level in China is divided into five levels. Figure 2 shows the distribution of the top four central cities. As can be seen from Figure 2, in the Yangtze River Delta, high-level central cities with Shanghai as the core are very dense, with Nanjing as Grade 2, Suzhou, Wuxi, Hangzhou and Ningbo as Grade 3, and Changzhou, Zhenjiang and Nantong as Grade 4. The Pearl River Delta is also a place where high-grade central cities gather. Academics believe that the Yangtze River Delta and the Pearl River Delta have formed the spatial framework of urban sprawl. A similar situation happened in Beijing, Tianjin and Hebei. (2) The degree of participation in world economic ties is comparable to that of Beijing, and each has its own characteristics. At present, we can't find a completely consistent index with international "world city" and "global city" to measure the distance between Shanghai and international cities. In fact, there is no authoritative international organization to define "world city" and "global city" with quantitative indicators. Which cities belong to "world cities" and "global cities" are still in the stage of experience, characterization and recognition by public opinion. I have chosen nine indicators to answer Friedman's question "How are the major cities in China connected with the world capitalist economy", so as to judge which cities in China will enter the ranks of international cities first. These nine indicators are: ① the distribution of the top 500 foreign-invested industrial enterprises in China; ② Distribution of China Top 500 Enterprises in Cities; ③ Distribution of offices of foreign telecom enterprises in China; ④ Distribution of offices of foreign computer enterprises in China; ⑤ Distribution of foreign financial institutions in China; ⑥ Cities that actually use the most foreign capital; ⑦ Cities with the most international flights; The city that receives the most foreign tourists; Pet-name ruby China's largest goods import and export customs. I also want to omit a lot of data here and look directly at the conclusion (table 1). Obviously, Beijing and Shanghai are at the first level, and the degree of internationalization is much higher than other cities in China. They are the first central cities to enter the ranks of international cities except Hong Kong. Guangzhou, Shenzhen, Tianjin, Qingdao, Dalian and Nanjing are also big cities with high degree of internationalization. The contrast between Beijing and Shanghai should be said to have its own characteristics and emphasis. The advantage of Beijing is that as the political and cultural center of China, it has good international functions such as politics and business in the Asia-Pacific region and has become the largest international tourism center in China. The main potential of its development into an international city lies in that Beijing is the place with the most developed education, science and technology and the most concentrated talents in China. Of course, there are many constraints for Beijing to become an international city. Shanghai used to be a famous international metropolis, which is an important historical wealth for Shanghai to become a world city. At present, it still maintains the status of the largest manufacturing center and the largest economic center in Chinese mainland; Open concept and system, flexible market economy tradition; China's vast hinterland, convenient gateway to the world economic system, and air and sea transportation are all different from but superior to Beijing. (3) Where does the competition in Shanghai mainly come from? The development of Beijing and Shanghai into international cities is facing fierce challenges from Tokyo, Seoul, Singapore, Hong Kong, Taipei and other existing international cities in the Far East. I think the competition in Shanghai is not from abroad, but from home. Domestic competition mainly comes not from Beijing, but from Hong Kong first. I say this for two reasons. First, the functional orientation of Shanghai is very similar to that of Hong Kong. Second, both Hong Kong and Shanghai regard the mainland as their hinterland, and more shares are attracted by Shanghai, while less shares flow to Hong Kong. On the contrary, the more shares Hong Kong attracts, the less shares will flow to Shanghai. There is only one piece of cake. However, there is still a big gap between Shanghai's current economic development level and Hong Kong's. At present, the economic scale of Hong Kong is equivalent to 16% of that of the Mainland, while Shanghai accounts for only 5% of the Mainland, and Hong Kong is more than three times that of Shanghai. The per capita GNP of Hong Kong is about seven times that of Shanghai. The amount of bank deposits and loans in Hong Kong is 10 times that in Shanghai; There is also a big gap between airport passenger and cargo transportation and seaport container transportation. It will take time to bridge such a big gap, but I believe that with the gap narrowing year by year, Shanghai will catch up with and surpass Hong Kong one day. Before 1950s, it was not an exaggeration to compare Shanghai to "new york of China". Today, it cannot be said that "new york of China" should be a second-class "world city". I estimate that one day Shanghai will become "China's new york" again, if new york does not decline? The reasons for my judgment are as follows: First, the rise of Hong Kong and the stagnation of Shanghai since the 1950s are two sides of the same question to some extent, and they are highly related. At the beginning, the influence space created by the development of Hong Kong, except for a part of Southeast Asia adjacent to Hong Kong, mainly replaced the original influence space of Shanghai. Since China's reform and opening up, the planned system has changed to a market system, and the internal institutional reasons for the stagnation of Shanghai's development have been eliminated. Shanghai's economic growth rate will certainly continue to surpass that of Hong Kong, and its influence will inevitably rise. Second, Shanghai's unique macro-location advantage is unmatched by Hong Kong. Shanghai is located at the midpoint of the north-south coastline in the east of China, at the exit of the East-West Yangtze River. It has a vast and rich Yangtze River basin, and even a larger area that can extend north and south as its hinterland. Externally, it is the closest city to Chinese mainland's main Pacific world trade channel, facing major trading partners such as Japan, South Korea, the United States and Canada. The hinterland of Hong Kong is actually the hinterland of the Pearl River Delta, which is relatively limited to the south of the Yangtze River. Shanghai is backed by the Yangtze River Delta and Hong Kong is backed by the Pearl River Delta. The Yangtze River Delta port group 1997 with Shanghai as the center, the domestic hinterland accounts for 28.2% of the national GDP and the population accounts for 23.2% of the national total, while the corresponding Pearl River Delta port group hinterland accounts for 17.4% of the national GDP and the population accounts for17. The hinterland of the Yangtze River Delta port group will show an obvious upward trend in the future. Once such a large-scale hinterland reaches the developed level, the prospect of its gateway city is very bright. Although the geographical advantage is not necessarily the decisive factor for the development of a place, it is a long-term, stable and independent person's will advantage. Other shortcomings are relatively easy to improve.
What shapes do fingerprints have? What are their characteristics? There are three basic types of fingerprints: bucket type, bow type and dustpan type. It is characterized by being shaped like a bucket, a bow and a dustpan.
Chemical method
Fingerprint is a line formed by the concave and convex skin on a person's fingertip. Fingerprint can increase the friction when the hand touches the object, so it is easier to exert force and grasp the object. It is naturally formed in the process of human evolution.
The first is obvious lines, which are visible to the naked eye. Such as paint, blood, ink and other items, are usually printed on fingerprint cards as basic information;
The second type is molded patterns, which refer to fingerprints found on soft substances, such as candles and clay.
The third category is latent fingerprints, which are fingerprints formed by the transfer of human natural secretions such as sweat, which are not easy to be found by naked eyes and are the most common fingerprints at the crime scene. Fingers first touch grease, sweat or dust, and then touch clean surfaces, often leaving potential fingerprints. Although these fingerprints are invisible to the naked eye, they can be revealed by special methods and special chemical reagents. The most common fingerprint that forensic doctors come into contact with is latent fingerprint. If fingerprints are left on the surface of non-absorbent objects such as metal, plastic, glass and ceramic tiles, the inspection method will be easier. Usually, powder method can be used to select powder with large color contrast and scatter it on the surface of the object to extract a complete fingerprint; Another method is magnetic powder method, which uses fine iron powder particles as brushes and brushes them back and forth to show fingerprints. If fingerprints are left on the surface of absorbent articles such as paper, cards, leather and wood, they must be chemically treated before they can appear in the laboratory.
Who is stronger in the NBA, paul george or Leonard? What are their characteristics? What are their advantages and disadvantages? What are their physical advantages? George's characteristics are all-round. His holding of the ball is not particularly stable, but his catching is very reliable. After passing through the cover of inside teammates, his shooting is particularly accurate, explosive and defensive.
Leonard's characteristic is super defense, which is based on his terrible wingspan (encyclopedia) and his outstanding defensive consciousness and good rebounding consciousness. His attack is reliable and has an upward trend.
George belongs to the publicity type, and Leonard is relatively low-key; Lai belongs to the diligent type, and George doesn't understand;
Leonard won the FMVPDBOY steal championship and was George's fastest growing player.
What are the advantages and characteristics of Canon 550D and 600D? What are the disadvantages? Accurately speaking, the 600D is not the follow-up model of the 550D, because Canon will not stop production of the 550D, but sell it at the same time. On the whole, 600D is undoubtedly the most competitive, and its shape and functional configuration are largely close to 60D. In addition to18 effective pixel APS-C CMOS, 9-point focusing, 63-zone autofocus module and 600D, it also keeps pace with the times, adding practical functions such as built-in flash, five creative filters, and multiple aspect ratio choices. The LCD can also be turned on. At the same time, its fuselage surface is covered with plastic skin in many places, which is helpful for users to hold.
What are the characteristics and advantages of ISR hose compared with AQ hose? ISR hose is produced by PARKERHANNIFIN of the United States and Shenyang No.4 Rubber Factory of China. The production technology of the former Soviet Union extended by china rubber Factory is more suitable for low temperature environment.
AQ seems to be a brand of Eaton in America, and there are many factories around the world. At present, China is mainly produced by factories in Southeast Asia, which is suitable for high temperature environment.
It seems that the joint venture of the United States in China is for China's coreless production technology and will not give us too much technical input. In the past, domestic rubber hoses were mainly made in Tianhe, Guangzhou in the north and south.
Now the import pipe and domestic private enterprises have also had a great impact on the market.
What selection tools are available in fireworks 8? Their respective characteristics are of little use. When picking colors, you can use the color picker for each tool.
I hardly need this tool. Besides, it is not necessary for every tool to be useful. This is the designer's problem.
As long as it is convenient to use.
This is a good one.
What are the advantages and disadvantages of Owen and Wall? Who has more potential? What are the technical features? Actually, I think Wall is great, but he is too low-key. Owen's advantages are gorgeous technique, good breakthrough rhythm and accurate shooting, but his defense and overall situation are not good. As for Wall, his defensive physical quality is first-class, and his organization and attack are also very good. This is a breakthrough, but I think shooting is average. Generally speaking, Owen's personal data around the emperor will inevitably shrink, and his development potential is still relatively good!
What are the advantages and disadvantages of forum and post bar? Forums and post bars are basically the same. The forum is a little more professional, more targeted, better managed and better subdivided. There are many people in the post bar, and there are also many people who tell lies. No one posted it, which is even more confusing.
What are the characteristics of poetry? It has been said that the classification of poetry is generally 1. According to the scale of length, words can be roughly divided into Xiao Ling (within 58 words), Middle Tone (59-90 words) and Long Tone (above 9 1 word, with the longest word reaching 240 words). A word, some with only one paragraph, is called monotony; Some are divided into two sections, called double tones; Some are divided into three or four sections, which are called three or four sections.
2. According to the nature of music, words can be divided into nine types: ling, yin, slow, three sets, preface, French music, Daqu, lingering and Zhu Gong tune.
3. According to the beat segment, there are four common types: Ling, also known as Xiaoling, whose beat segment is short; Lead, lead long in a small order; Near, the tone is similar, which leads to long; The slower, the longer the lead.
4. According to the creative style, it can be roughly divided into graceful school and unrestrained school.
5. Divided by epigraph. For example, Sauvignon Blanc, the name of the tablet. Also known as Sauvignon Blanc Order, Acacia Order and Wu.