Base on 3 m×3 m grid in sloping cornfield with soil auger in Yingwugou Small Watershed of the Dan River Basin, a total of 39 sampling points were collected, and soil water content and nutrient content were measured in different soil depths. Meanwhile, the soil properties of different depth have...

This paper uses Maguan city which is located at the border of China and Vietnam in Yunnan province as the case to do the research about the local people work oversea and Vietnam illegal labors entry to China. It will analyze the characters, reasons and effect of this situation, try to give some...

We present a model of timing of seasonal sales where stores choose several designs at the beginning of the season without knowing which one, if any, will be fashionable. Fashionable designs have a chance to fetch high prices in fashion markets while non-fashionable ones must be sold in a...

When employers cannot tell whether a school truly has many good students or whether it is just giving easy grades, schools have an incentive to inflate grades to help their mediocre students. However schools also care about preserving the value of good grades for their good students. We...

We present a two-period model of the assignment market with uncertainty in the first period regarding productive characteristics of participants. This model is used to understand incentives toward early contracts or unraveling in labor markets for entry-level professionals. We study two...

Costly delay in negotiations can induce the negotiating parties to be more forthcoming with their information and improve the quality of the collective decision. Imposing a deadline may result in stalling, in which players at some point stop making concessions but switch back to conceding at the...