Parameter estimation and performance analysis issues are studied for multicomponent polynomial-phase signals (PPS’s) embedded in white Gaussian noise. Identifiability issues arising with existing approaches are described first when dealing with multicomponent PPS having the same highest order phase coefficients. This situation is encountered in applications such as synthetic aperture radar imag...

evaluating the impact of organizational factors andmanagement of deviant workplace behavior is an important issue. it helpsto explain the situation to senior managers in order to plan and makedecision to prevent or mitigate such a behavior. this study evaluates theimpact of organizational factors and management (unfair laws,organizational culture, compensation/ remuneration structure, negative ...

this research is a comparative study of entrepreneurial characteristics of founders of non-governmental high school in tehran. the research population was the female and male’s founders of non-governmental high school in tehran (totally 507 persons). the sample was 213 people (90 women and 123 men) were selected by cluster sampling. the data were collected through questionnaire that measured tw...

this research develops a two-level model based on hypotheses, which concern relationships among role ambiguity, role conflict, job involvement and salesperson performance at individual level and collective sale self efficacy, customer orientation and competitive climate at sale unit level in iranian food industry. data was drawn from 482 sales people in 30 companies , using a 51-item self-repor...

We introduce from first principles a synthetic aperture radar (SAR) imaging and target motion estimation method that is combined with compensation for radar platform trajectory perturbations. The main steps of the method are (a) segmentation of the data into properly calibrated small apertures, (b) preliminary motion estimation from the data using the Wigner transform and the ambiguity function...