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Simulation is a well-known technique for using computers to imitate or simulate the operations of various kinds of real-world facilities or processes. The facility or process of interest is usually called a system, and to study it scientifically, we often have to make a set of assumptions about how it works. These assumptions, which usually take the form of mathematical or logical relationships, constitute a model that is used to gain some understanding of how the corresponding system behaves, and the quality of these understandings essentially depends on the credibility of given assumptions or models, known as VV&A (verification, validation and accreditation). The main purpose of this paper is to present an in-depth theoretical review and analysis for the application of VV&A in large-scale simulations.

After summarizing the VV&A of related research studies, the standards, frameworks, techniques, methods and tools have been discussed according to the characteristics of large-scale simulations (such as crowd network simulations).

The contributions of this paper will be useful for both academics and practitioners for formulating VV&A in large-scale simulations (such as crowd network simulations).

This paper will help researchers to provide support of a recommendation for formulating VV&A in large-scale simulations (such as crowd network simulations).

Weber's hypothesis about China is the hypothesis forwarded by Weber that why capitalist production did not appear in eastern countries such as China in the first place. Weber considered that the reason may be Chinese Confucianism and Taoism lack protestant ethic like Western countries.

The clarification has aroused wide discussion, meanwhile, East Asian capitalism belonging to the Chinese cultural circle has successfully refuted Weber's proposition. Chinese scholars have a broad debate around this topic while no agreement has been reached. This paper tries to explain Weber's hypothesis by Marx's theory of capital origin, which can be explained that the landlord economy caused by China's federal society under centralism leads to the result that the commodity of labor cannot exist in that environment.

The answer from Marxist economics has not only solved an enormous theoretical problem, but also it has vital practical significance. It easily clarifies the fact that the commodity of labor in full sense still cannot emerge in China nowadays, which is an important reason causing China to enter the New Normal and New Era.

Therefore, it leaves China the only way of the socialist road with Chinese characteristics and revitalizing China's rural economy, which means China can only promote rural industrialization and urbanization under the principle of adhering to rural collective ownership, while implementing various forms of integrated agricultural and industrial business models based on local conditions.

Some economic theories have influenced the reform of the socialist open economy with Chinese characteristics. As a new practice of socialism, an open economy is not only driven by China’s productivity level and people’s living standards but also regulated by the law of commodity production and value.

It was popular to participate in economic globalization for most countries in the second half of the 20th century, but not all of them could benefit from it.

The key to the success of the open-economy reform with Chinese characteristics lies in learning from and innovating the comparative advantage theory, thus forming an organic whole of the open economy, including the core of correctly handling the relationship between the government and the market, the method of gradual reform, the breakthrough point of transforming the mode of economic development, and serving people all the time.

Achieving internal and external coordination through the combination of opening-up and independence is a critical principle of China’s economic opening-up, which not only effectively safeguards national interests but also actively promotes the construction of a new global order.