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...

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...

The paper describes and details a design science approach for how to explore the impact of emergent technologies on the performance frontier in operations management. The process is illustrated through an in-depth case where the performance frontier was affected through finding RFID and agent applications that enable a move to simpler integrating mechanisms. The discovered solution designs simp...

In this paper an attempt is made to explain the basic concept of efficiency, frontier production function, technical efficiency, deterministic frontier, and stochastic frontier. Efficiency of a firm/industry refers to its performance in the utilization of resources at its disposal and is a relative concept. Technical efficiency of a production function is defined as the maximum quantity of outp...

Data envelopment analysis (DEA) is an axiomatic, mathematical programming approach to productive efficiency analysis and performance measurement. This paper shows that DEA can be interpreted as a nonparametric least squares regression subject to shape constraints on production frontier and sign constraints on residuals. Thus, DEA can be seen as a nonparametric counter-part of the corrected ordi...

This paper studies an infinite-horizon adverse selection model with an underlying Markov information process and a risk-neutral agent. It introduces a graphic representation of continuation contracts and continuation-payoff frontiers, namely finite policy graphs, and provides an algorithm that generates a sequence of such graphs to approximate the optimal policy graph. The algorithm performs an...

This paper extends the existing research on real estate investment trust (REIT) operating efficiencies. We estimate stochastic-frontier, panel-data models specifying a translog cost function. The specified model updates the cost frontier with new information as it becomes available over time. The model can identify frontier cost improvements, returns to scale, and cost inefficiencies over time....

This paper introduces a new way to measure divergence of output across countries. It measures how productivity, technology or output per worker in each country follow the global frontier. We find that during the years 1970-2008 most countries followed the global frontier only partially, so they diverged from it. We use the tools of ‘development accounting’ to measure by how much countries follo...