in this research, effect of vermicompost and plant growth promoting rhizobacteria (pgpr) on physiological traits of lemon balm under drought stress condition was investigated in year 2012 at karaj research institute of forest and rangelands. experiment was conducted as split-split plot in a randomized complete block design with three replications. irrigation (normal: irrigated to field capacity...

This paper assesses the adequacy of model fit of the split-plot design models that is the whole plot (WP) sub design model with WP error and the split-plot (SP) sub design model with SP error using the four measures of adequacy of fit for the WP and SP sub designs proposed by Almimi et al. [3] which are the R 2 , R 2 -Adjusted, Prediction Error Sum of Square (PRESS) and R 2 -Prediction statisti...

Randomized block and split plot designs are among the most commonly used experimental designs in forest research. Measurements for plots in a block (or subplots in a whole plot) are correlated with each other, and these correlations must be taken into account when analyzing repeated measures data from blocked designs. The analysis is similar to repeated measures analysis for a completely random...

I NDUSTRIAL experiments often involve two types of factors: those that are hard to change and those that are easy to change. The experiments are performed by fixing the levels of the hard-to-change factors and then running all or some of the combinations of the easy-to-change factor levels. Then, a new setting in the hard-to-change factors is selected and the process is repeated. With replicati...

Human appraisals are becoming increasingly important in the design of engineering systems to link engineering design attributes to customer preferences. Human appraisals are used to assess consumers’ opinions of a given product design, and are unique in that the experiment response is a function of both the product attributes and the respondents’ human attributes. The design of a human appraisa...

A novel method, BBD-SSPD is proposed by the combination of Box-Behnken Design (BBD) and Split-Split Plot Design (SSPD) which would ensure minimum number of experimental runs, leading to economical utilization in multi- factorial experiments. The brine shrimp Artemia was tested to study the combined effects of photoperiod, temperature and salinity, each with three levels, on the hatching percent...

Two-level factorial and fractional factorial designs have played a prominent role in the theory and practice of experimental design. Though commonly used in industrial experiments to identify the significant effects, it is often undesirable to perform the trials of a factorial design (or, fractional factorial design) in a completely random order. Instead, restrictions are imposed on the randomi...