In the past, investors used their own or others’ experiences to achieve goals. With development of financial management, investors’ choices became more scientific. They could select optimal choice by using different models and combining results with experiences. portfolio optimization, main issue is selection assets securities that can be provided a certain amount capital. present study, proble...

abstract. today, there is no specific method or criterion for selecting contractors in the researches’ field. usually this selection is regarded as a matter of taste and as a result, there is no coordinated approach in the mentioned domain. sometimes, after signing the contract, the inappropriate selection became clear. the managers are in direct need of a pattern for selecting the contractors....

information accompanied with the technology supporting it is valuable asset in many organizations. as organizations are highly depended on it, implementing it effective governance is necessary for them. it governance areas affecting business are strategic alignment, risk management, performance management, resource management and providing value.  successful performances need a mix of structure...