some researches made in the field of agency problem issue, deal with the role of control systems regarding owners and managers. in this research the relationship between the two control mechanisms, namely the voluntary disclosure (external control mechanism) and outside directors (internal control mechanism), which are reductive of agency problems, has been studied. for this reason, a sample ...

abstract following innovations in the field of elt, a new topic which has recently attracted a lot of attention is metaphor analysis. although this area of research is still in its infancy in elt, it seems that the idea can shed more light on the puzzle of english language learning and teaching. therefore, the major aim of this study is to analyze language learning and teaching in formal a...

The surrogacy is one of the artificial reproductive technologies through third party interference, which has raised many legal debates. Studying the law of various countries around the world shows a variety of different legislative approaches in this regard. In this paper, I first categorize legal systems around the world in the field of surrogacy. I then review the laws and regulations of four...

Right on voice is one of the rights which protect of person’s voice and sound and prohibit of imitation (sound effects) and sound forgery. Today on the light of increasing developments of communications this right includes some forms and instances which protected by legal systems in different ways. In some of the legal systems, this right has recognized on the basis of personality rights and ri...

many mobile and off-grid devices include electronics and other electrical consumers like servo drives, which need a quite low supply power. since the price for photovoltaic modules drops continuously, photovoltaic power supply is interesting in more and more applications. in solar powered systems, a battery is needed to store energy for the night and cloudy periods. the power electronics of suc...

Competion laws follow varions goals including economic targets such as increase of economic efficiency and consumers' welfare. This branch of law has resisted against agreements and contracts which endanger the consumers' or public welfare and has tried to prevent such contracts and processes. European Union is among the greatest consumers and importer of energy in the world. The most part of t...

in order to examine the ecological conditions and characteristics of fraxinus excelsior l. in the northern forests of iran 6 main areas as well as some miscellaneous ones , have been selected in the region respectively in : lomir2, shafaroud , park - e-noor , ahlam , alandan and noor.