Search results

The impact of assimilation on a consumer’s susceptibility to interpersonal influence is assessed in samples of first‐generation Armenian and Chinese immigrants to the US. We find that: (a) Chinese immigrants are more susceptible to interpersonal influence than are Anglo‐Americans who in turn are more susceptible to this influence than are Armenian immigrants, (b) Chinese immigrants are especially susceptible to the normative type of interpersonal influence and (c) Chinese immigrants’ susceptibility to both types of interpersonal influence decreases significantly as they identificationally‐assimilate, whereas Armenian immigrants’ susceptibility to both types of interpersonal influence decreases significantly as they structurally‐assimilate into the Anglo‐American macro‐culture.

The purpose of this paper is to propose a novel self-adjusting proportional integral (SA-PI) controller, for controlling the active and reactive power of permanent magnet synchronous generator (PMSG) when subjected to variable wind speed and parameter variations.

The proportional and integral gains of the proposed SA-PI controller are based on tan-hyperbolic function and adjust themselves automatically within pre-fixed limits according to the error occurring during transient situations.

The proposed SA-PI controller is able to evade the problems usually encountered while using a constant gain PI controller, such as lack of robustness, adaptability and a wide range of operation. It also damps out system oscillations faster with reduced settling time and fewer overshoots.

Simulation results and comparative studies with conventional PI controller and the differential evolution–optimized PI (DE-PI) controller reveal the effectiveness of the proposed control scheme. MATLAB is used to perform the simulation studies.

As the population and purchasing power of ethnic minority consumers in the USA continue to grow, more marketers are using subcultural segmentation and targeted marketing to reach these consumers. Meanwhile, some marketers have grown increasingly concerned with the cost‐effectiveness of ethnic segmentation and differentiated marketing. This research reviews various methods for segmenting the ethnic markets and suggests the nested approach and cost‐benefit optimization for analyzing the cost‐effectiveness of ethnic segmentation and marketing. Furthermore, this research proposes four alternative strategies for marketing in a multicultural environment. Directions for future research and managerial implications are explored.

This study proposes a modified sliding mode control technique having a proportional plus integral (PI) sliding surface aided by auxiliary control applied to a wind turbine driven permanent magnet synchronous generator. This paper aims to realize real and reactive power control, keeping the voltage under the desired limit during transients.

First, a PI sliding surface type sliding mode control (PISMC) is formulated, which is capable of dragging the system to the desired state and stability. Then a saturation function-based auxiliary controller is incorporated with PISMC to enhance its performance during wind speed and system parameter variations.

The proposed controller can tackle the problems faced while using a PI controller and the conventional sliding mode controller (CSMC) such as lack of robustness and requirement of unnecessary large control signals to overcome the parametric uncertainties and problem of chattering.

To justify the superior performance of the proposed controller in terms of robustness, reliability and accuracy a comparative study is done with the CSMC and PI controllers. The simulations are performed using MATLAB.