We show that standard validation techniques have been unable to detect this important limitation of gravity models due to the different orders of magnitude of migration flows across spatial corridors, on the one hand, and over time, on the other hand. Our analysis suggests that gravity-model-...
百度试题 题目中国大学MOOC: The gravity model can explain why ___.相关知识点: 试题来源: 解析 trade between Sweden and Germany exceeds that between Sweden and Spain.
The gravity model can explain why ___.A. trade between Sweden and Germany exceeds that between Sweden and Spain. B. countries with oil reserves tend to export oil. C. capital rich countries export capital intensive products. D. intra-industry trade is relatively more important than other...
Which of the following does not explain the extent of trade between Ireland and the U.S.? A. historical ties B. cultural Linguistic ties C. Gravity Model D. multinational corporations E. large numbers of Irish-Americans 相关知识点:
do an increasing share of their trade with each other. Explain why, using the gravity model. 在过去的几十年中,东亚国家增加了它们在世界GDP中的份额。同样,不 仅东亚国家整体的贸易在世界贸易中的份额增加了,而且东亚国家内相互间的 贸易也增加了。应用引力模型解释这一现象。
Planets may look like tiny, twinkling stars to children, even though they're large objects that move through space under the influence of gravity. Enlighten children by showing them a scale model of the solar system or a picture of one that has the sun at its center. ...
A pendulum is a rod hanging vertically from its top end (or a weight called a bob hanging from a string) that swings from side to side due to the force of gravity. As Italian scientist Galileo Galilei (1564–1642) discovered, the clever thing about a pendulum is that it always takes ...
The crust along a divergent boundary is some of the newest crust on earth. Explain why. Plate Tectonics: The theory of plate tectonics deals with the dynamics of the earth's outermost layer (also known as the lithosphere). The theory gives a satisfying explanation for...
The team then found that the Ising model, which was developed to explain the behavior of ferromagnets and other physical systems, is mathematically equivalent to certain models of elections and accurately describes the onset of instability in electoral systems. ...
Already extensively studied by particle physicists looking to understand why gravity appears so much weaker than the other known forces, the mirror world would contain copies of all existing fundamental particles. These would interact with each other through “mirror” versions of the known force parti...