this research was conducted to investigate genotyp×environment interaction for grain yield of ten wheat cultivars in 8 environments (combinations of two nitrogen fertilizer treatment and four irrigation regimes). analysis of additive main effects (analysis of variance) and multiplicative interaction effects (principal component analysis) revealed that the effects of genotype, environment and ge...

This paper describes the interactive tactile luminous floor that was constructed and used as the skin of the playful interactive space Ada, which ran as a public exhibit for five months in 2002 and had over 550,000 visitors. Ada’s floor was custom-built to provide a means for individual and collective user interaction. It consists of 360 hexagonal 66 cm tiles covering a total area of 136 m2, ea...

The cross-correlations between price fluctuations of 201 frequently traded stocks in the National Stock Exchange (NSE) of India are analyzed in this paper. We use daily closing prices for the period 1996-2006, which coincides with the period of rapid transformation of the market following liberalization. The eigenvalue distribution of the cross-correlation matrix, C, of NSE is found to be simil...

Goal To investigate the evolution and stability of mutualistic interactions based on changing interaction topologies, spatially heterogeneous habitats, asymmetries in partner numbers, and processes of partner fidelity and partner choice. Numerous effects sustaining cooperation have been identified since the very first models of cooperation and mutualistic interactions were published. In particu...

influence of maternal and sire-generation interaction effects on day-old chick' weight was investigated in two commercial broiler sire and dam lines, and in mazandaran native fowls. the data were analysed through restricted maximum likelihood (reml) procedures, using asreml software. ten different animal models were implemented and compared with likelihood ratio test. all models consisted ...

T his article challenges Fixed Effects (FE) modeling as the ‘default’ for time-series-crosssectional and panel data. Understanding different within and between effects is crucial when choosing modeling strategies. The downside of Random Effects (RE) modeling— correlated lower-level covariates and higher-level residuals—is omitted-variable bias, solvable with Mundlak’s (1978a) formulation. Conse...

PEER EFFECTS IN SEXUAL INITIATION: SEPARATING SOCIAL NORMS AND PARTNER SUPPLY Seth O. Richards Kenneth I. Wolpin Sexual activity among adolescents is associated with risks such as pregnancy and STDs, and there is substantial policy interest in how peers influence the timing of sexual initiation. This paper measures separate effects for two social mechanisms— peer-group norms and partner availab...

The goal of the FMECA (Failure Mode, Effects and Criticality Analysis) process is to determine the consequences that failures may have on the function of a complex system. In aeronautic industries, this process is very important and must comply with international standards. Today, most of the process is performed manually. This can be problematic, since, although the basic process is not diffic...