selective harmonic elimination (she) is a powerful modulation scheme aims to find the required switching angles in order to eliminate the number of undesired harmonics. she is a complicated problem which consists of several nonlinear equations which have multiple local minima. in order to eliminate the higher number of undesired harmonics and as a result reducing the total harmonic distortion (...

background over the past years, the malaria elimination program has considerably decreased the malaria indigenous cases and confined their incidence to the southeastern areas of iran encompassing 28 less developed counties with favorable transmission conditions. objectives the aim of the study was to investigate the effects of climatic and socioeconomic indicators on malaria transmission and to...

This paper proposes a single-phase five-level inverter with a modified pulse width-modulated (PWM)control scheme. The modified pulse width-modulation technique is developed to reduce switching loss.Also, the proposed multilevel inverter can reduce the requirement of power switches compared to aconventional cascaded multilevel inverter. The modes of operation, control signals, and operatingprinc...

First of all, in this paper, the topology and operation of the three-phase three-level Z-source inverter based on neutral-point-clamped (Z-NPC) are studied. Moreover, different combinations of permissible switching states and control signals are explained for this inverter. In this paper, the topology of the three-phase three-level Z-NPC inverter is extended for an n-level state. Also, a combin...

Drawing on the conceptual foundations of feedback and behavior modeling we investigate the effects of managers’ coaching intensity on the performance of those they supervise, at multiple levels of an organizational hierarchy. Data from 328 sales associates reporting to 114 middle managers, and 93 middle managers reporting to 32 executive managers are used to test the research hypotheses. Using ...

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...

An integrative multilevel model of empowerment and job performance behaviours is advanced, building on Social Cognitive Theory (SCT). Empowerment climate is hypothesized as influencing individual and team performance behaviours directly and partially through individual and team (psychological) empowerment. Using survey responses from 380 individuals, nested in 115 project management teams, we t...

In the study of examination results much interest centres on comparisons of curriculum subjects entered and the correlation between these at individual and institution level based on data where not every individual takes all subjects. Such `missing' data are not missing at random because individuals deliberately select subjects that they wish to study according to criteria that will be associat...

during recent decades, researchers have attempted to understand individual and group level behavior, at micro levels while macro level researchers studied organizational and institutional level behavior. yet few scholars have examined organizational effects on individual and group behavior and the effects of individual and group behavior on organization as a whole. such a research can lead to a...