in the research we try to introduce “network matrix” in selecting optimizing portfolio for active management in investment companies, to evaluating obtained portfolio of this, with this aim that have high efficiency in relation to market portfolio efficiency. first matrix (portfolio) is value-growth stocks that are classified by standards p/e and p/b and second matrix (portfolio) are an aggress...

like other sciences, market segmentation, as a science, seeks to realize unique needs of human being. in health market, individual diagnostic and curative methods are practiced more than anytime. however, a foundation of this market, pharmaceutical market, is not as advanced as other products and services markets in terms of segmentation. regarding the complexity of pharmaceutical market, it is...

in highly competitive market of food industry maintaining and increasing market share are results of brand performance. hence detecting the effective factors on the brand performance is crucial in strategic marketing decisions. data gathered by a 36-items questionnaire. the sample was composed of 131 managers and marketing experts in 62 companies in food industry those are located in tehran cit...