In this paper, for solving the nonlinear semidefinite programming problem, a homotopy is constructed by using the parameterized matrix inequality constraint. Existence of a smooth path determined by the homotopy equation, which starts from almost everywhere and converges to a...

The mean-risk stochastic mixed-integer programs can better model complex decision problems under uncertainty than usual stochastic (integer) programming models. In order to derive theoretical results in a numerically tractable way, the contamination technique is adopted in this paper for the...

By the field experiment, we research the rice nutrient use efficiency. And the results show that the formulated fertilization can improve the fertilizer nutrient use rate, and N, P2O5, and K2O are improved by 121%, 38%, and 64%, respectively; soil nitrogen level and application rate of nitrogen...

The mean-risk stochastic mixed-integer programs can better model complex decision problems under uncertainty than usual stochastic (integer) programming models. In order to derive theoretical results in a numerically tractable way, the contamination technique is adopted in this paper for the...

Purpose–To help investors find an investment policy with strong competitiveness, the purpose of this paper is to construct a multi-period investment decision model with practicality and superior performance. Design/methodology/approach - The paper uses a suitable multi-period risk measure to...

Based on analysis of geographical and location advantages of Qiaocheng District, we discussed characteristics of land utilization and local industry. In accordance with these characteristics, it is proposed to explore potential of farming land, speed up transfer of farming land in Qiaocheng...

The present study uses firm survey data of 1033 manufacturing firms operating in Ethiopia in 2011 to examine the impact of Chinese outbound direct investment on the productivity of domestic firms. Particularly, we attempt to answer two questions. Firstly, are Chinese-owned (henceforth foreign)...

This paper evaluates different hedging strategies for aluminum and copper futures contracts traded at Shanghai Futures Exchange. In addition to usual candidates such as the traditional regression hedge ratio and the hedging strategy constructed from bivariate fractionally integrated generalized...