Product quality for plastic injection molding process is highly related with the settings for its process parameters. Additionally, the product quality is not simply based on a single quality index, but multiple interrelated quality indices. To find the settings for the process parameters such that the multiple quality indices can be simultaneously optimized is becoming a research issue and ...

walnut is one of the important products in kerman province and baft town is the main area of ‎walnut orchards. so the technical, allocative and economical efficiency of walnut farmers computed ‎assign the degree of farmer’s success in the optimum allocation of their resources. at first the ‎proper production function was estimated, and then stochastic frontier production and technical, ‎efficie...

Increasing energy efficiency and exploiting energy saving potential are two important practices that can help to ensure future energy security in China. This paper proposes a new total factor energy efficiency indicator, based on the directional meta-frontier data envelopment analysis (DEA) approach, to account for the heterogeneity of production technology among provinces in China. This indica...

Multi-objective optimization problems are often accompanied by complex black-box functions which not only increases the difficulty of solving, but also solving time. In order to reduce computational cost such multi-objective problems, this paper proposes an ARBF-MLPA (Adaptive Radial Basis Function neural network combined with Machine Learning Point Adding) method, uses ABRF Function) and OLHS ...

the world have experienced phenomenal expansion. The aggregated market capitalization of all national equity markets has grown from less than US$1 trillion in 1974 to over US$16 trillion by the end of 1997. Exhibit 1 presents evidence of the increase in market capitalization experienced by both developed and emerging markets. The process of growth in global equity markets is still imperfectly u...

When analyzing the productivity of rms one may want to compare how the rms transform a set of inputs x typically labor energy or capital into an output y typically a quantity of goods produced The economic e ciency of a rm is then de ned in terms of its ability of operating close to or on the production frontier which is the boundary of the production set The frontier function gives the maximal...