For a long time, the traditional pattern of urban-rural human settlements has been shaped in reference to the existence of the urban-rural dual structure. In this paper, we put forward the notion of triaxiality of human settlements, and used the standards conversion entropy weight method to...

Because air traffic control efficiency can be largely increased by means of group, the aircraft grouping problem was studied based on improved divisive hierarchical clustering algorithm (DHCA). The concepts of position similarity, velocity similarity and heading similarity were defined and the...

Replaced with revised version of paper 07/24/07.

This paper applies both parametric and non-parametric approaches to evaluate Economies of Size and Total Factor Productivity (TFP) in Alberta cow-calf production based on the unbalanced panel data from 196 farmers during the time period from 1995 to 2002. Under the parametric approach, a random...

This article empirically studies the pricing kernel implicit in option prices. Based on the cross-sectional fits alone, no significant difference can be detected between models with different factor dynamics. A cubic pricing kernel provides almost perfect fits in the sample. Nonlinearity in the...

Importance measures have been widely studied and applied in reliability and safety engineering. This paper presents a general formulation of moment-independent importance measures and several commonly discussed importance measures are unified based on Minkowski distance (MD). Moment-independent...

Many cities worldwide have considered vehicle restriction policies to curb proliferating problems related to traffic and pollution. At the beginning of 2011, Beijing became the first city to allocate vehicle license plates using a lottery. We provide a background on Beijing׳s lottery and...

China and the United States of America (US) are developing renewable energy concurrently. In this paper, we seek the opportunities for potential cooperation between these two countries based on the analysis of annual economic data. A mathematical model has been established to characterize...

Based on the result from the survey which carried out in Shijiazhuang University of Economics and the level of entrepreneurial qualities among the college students, this research analyses the level of college students’ entrepreneurial qualities in the area of knowledge, ability and psychology....