Linking Distributive and Procedural Justice to Employee Engagement Through Social Exchange: A Field Study in India

Research linking justice perceptions to employee outcomes has referred to social exchange as its central theoretical premise. We tested a conceptual model linking distributive and procedural justice to employee engagement through social exchange mediators, namely, perceived organizational support and psychological contract, among 238 managers and executives from manufacturing and service sector firms in India. Findings suggest that perceived organizational support mediated the relationship between distributive justice and employee engagement, and both perceived organizational support and psychological contract mediated the relationship between procedural justice and employee engagement. Theoretical and practical implications with respect to organizational functions are discussed

A generic travelling wave solution in dissipative laser cavity

A large family of cosh-Gaussian travelling wave solution of a complex Ginzburg–Landau equation (CGLE), that describes dissipative semiconductor laser cavity is derived. Using perturbation method, the stability region is identified. Bifurcation analysis is done by smoothly varying the cavity loss coefficient to provide insight of the system dynamics. He’s variational method is adopted to obtain the standard sech-type and the notso-explored but promising cosh-Gaussian type, travelling wave solutions. For a given set of system parameters, only one sech solution is obtained, whereas several distinct solution points are derived for cosh-Gaussian case. These solutions yield a wide variety of travelling wave profiles, namely Gaussian, near-sech, flat-top and a cosh-Gaussianwith variable central dip. A split-step Fourier method and pseudospectral method have been used for direct numerical solution of the CGLE and travelling wave profiles identical to the analytical profiles have been obtained. We also identified the parametric zone that promises an extremely large family of cosh-Gaussian travelling wave solutions with tunable shape. This suggests that the cosh-Gaussian profile is quite generic and would be helpful for further theoretical as well as experimental investigation on pattern formation, pulse dynamics andlocalization in semiconductor laser cavity

Band-gap variation in Mg- and Cd-doped ZnO nanostructures and molecular clusters

We study the effect of doping on band gap in Mg- and Cd-doped zinc oxide nanostructures and molecular clusters. The fabrication of doped nanostructures was carried out via solution route. The lower doping efficiency of Cd than that of Mg has been explained in terms of binding energy. The band gap varied from 3.04 eV in Cd-doped (9.1 at. % of Cd) nanostructure to 3.99 eV in Mg-doped (16.8 at. % of Mg) nanostructure. Theoretical analysis using first-principles molecular dynamics techniques on pristine and doped ZnO clusters shows that the energy gap between the highest occupied molecular orbital and the lowest unoccupied molecular orbital exhibits a similar variation as does the band gap in nanostructures with the varying concentration of Mg and Cd