To have valid meaning, "statistical interaction" must be consistent with biological or physical interaction which is defined as mutual (dependent) action of factors contributing to the response effect. In mathematical and statistical response models the parameter representing interaction depends on the model concerned. Factorial experiments, discrete response, and regression models are discusse...

In this study, Bacillus licheniformis cells were immobilized by entrapment in calcium alginate beads and were used for production of alkaline protease by repeated batch process. In order to increase the stability of the beads, the immobilization procedure was optimized by statistical full factorial method, by which three factors including alginate type, calcium chloride concentration, and agita...

a rain gauge network should serve general as well as specific purposes such as water supply, hydropowergeneration, flood forecasting, irrigation, and flood control. the level of accuracy a network can achieve depends onthe number and locations of gauges in the network. in this study, a rain gauge network was designed for hormozganprovince in the south of iran. monthly rainfall totals from 124 r...

in this work, the influence of different edm parameters (pulse current, pulse voltage, pulse on-time , pulse off-time) in finishing stage on  the surface roughness (r a )  as a result of application copper electrode to a workpiece( cold work steel  din1.2379)  has been investigated. design of the experiment was chosen as full factorial. statistical analysis has been done and artificial neural n...

This paper attempts to introduce readers with the concept and methodology of bootstrap in Statist ics, which is placed under a larger umbrella of resampling. Major port ion of the discussions should be accessible to any one who has had a couple of college level applied stat istics courses. Towards the end, we attempt to provide glimpses of the vast l i terature published on the topic, which sho...

For a particular set of Boltzmann weights and a particular boundary condition for the six vertex model in statistical mechanics, we compute explicitly the partition function and show it to be equal to a factorial Schur function, giving a new proof of a theorem of Lascoux.