In this paper, we investigate the capacitated two-parallel machines scheduling problem, where one machine is only available for a special period of time after which it can no longer process any job while the other machine is continuously available. Our objective is to minimize the completion...

This paper considers coordinated scheduling on parallel identical machines with batch delivery. Jobs are first processed on m parallel and identical machines in the manufacturing facility and then delivered to the customer in batches. There are v identical transporters that can carry up to c...

This paper considers a parallel-machine scheduling problem with machine maintenance. There are unavailable periods on each of the first k machines, and the remaining m - k machines are always available, where 1 [less-than-or-equals, slant] k [less-than-or-equals, slant] m is an...

This paper considers the scheduling problems with the objective of minimizing the total completion time on two parallel identical machines with given unavailable periods. The jobs are assumed to be nonresumable. If there is one unavailable period on one of the two machines, we prove that SPT has...

Interaction effects have been consistently found important in explaining the variation in outcomes in many scientific research fields. Yet, in practice, variable selection including interactions is complicated due to the limited sample size, conflicting philosophies regarding model...

According to the connotation of ecological civilization, construction principle of ecological civilization index system is expatiated, including integrity principle, applicability and feasibility principle, quantification principle and purposefulness principle. Based on this, a total of 23...

A model examines how the international and China’s market prices impact China’s soybean imports from the U.S. and South America. Based on soybean crushing ratios and a market clearing presumption, an equation of China’s soybean oil import prices is designed to achieve the goal.

The intraday pattern, long memory, and multifractal nature of the intertrade durations, which are defined as the waiting times between two consecutive transactions, are investigated based upon the limit order book data and order flows of 23 liquid Chinese stocks listed on the Shenzhen Stock...

We investigate the temporal correlations and multifractal nature of trading volume of 22 liquid stocks traded on the Shenzhen Stock Exchange in 2003. We find that the trading volume exhibit size-dependent non-universal long memory and multifractal nature. No crossover in the power-law dependence...