هدف مقاله حاضر بررسی تأثیر افشای سرمایه اجتماعی بر هزینه سرمایه در شرکت‌های با عدم تقارن اطلاعاتی می‌باشد. در این راستا تعداد 110 شرکت پذیرفته شده در بورس اوراق بهادار تهران با استفاده از روش نمونه‌گیری حذفی انتخاب گردید. برای اندازه‌گیری افشای سرمایه اجتماعی از سه شاخص سرمایه شناختی، سرمایه ساختاری و سرمایه رابطه‌ای و برای سنجش عدم تقارن اطلاعاتی از شاخص هزینه تبلیغات استفاده شده است. از روش د...

Identifying spatial patterns in vulnerability involves a comprehensive look at vulnerable points. And provides analytical power to the authorities. Therefore, it is necessary to recognize patterns of vulnerability so as to minimize the amount of damage to them in the event of a crisis. The city of Tehran, as the political and administrative center of the country, is faced with a variety of risk...

 This study aimed to investigation effects of parental divorce on psychological empowerment in boys. The nature of present research is  qualitative. The study population consisted of boys with divorced parents who are located in  Shahryar. Purposive sampling was performed.  Depth interviews were conducted with a total of 13 boys from families who live with their mother and had experienced divor...

Energy consumption efficiency is one of the most important concerns in urban communities allotted more than 70 percent of Iran’s population to itself. Since energy efficiency index that is one of the targeted components in resistance economy policies has been reduces, it is necessary to design and adopt comprehensive, efficient, and integrated policies in order to improve efficiency and product...

Energy consumption efficiency is one of the most important concerns in urban communities allotted more than 70 percent of Iran’s population to itself. Since energy efficiency index that is one of the targeted components in resistance economy policies has been reduces, it is necessary to design and adopt comprehensive, efficient, and integrated policies in order to improve efficiency and product...

in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...

abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...