نتایج جستجو برای: lack of technology
تعداد نتایج: 21201556 فیلتر نتایج به سال:
“philosophy of technology” is a new branch of the human knowledge which with this specific title has only 30 or 40 years old in the literature of the world thinkers. however, the “technology” is one of the modern world phenomena, which from 19th century drew the attention of the thinkers and was analyzed by romantists, marx and heidegger and in 20th century was considered more but the using of ...
Background and aim: Today with the progressing technology and the increasing use of machinery, due to the use of sophisticated and high risk technology, the hazards and potential accidents in machinery processes have increased and even they are feared. Therefore, the purpose of this study was to identify risk factors and influencing sub-factors on ranking of risk levels in the William-Fine mode...
land is one of the most important effective factors in production in agricultural sector. existence of small owners units due to the lack of effective use of technology, machinery and agricultural production tools are restricting factors for profiting and yielding in agricultural sector. the purpose of this study was prioritizing the preventive factors of extension of land consolidation plan in...
phytoremediation is an eco-friendly method for removal of pollutants, which can be relied upon as a sustainable technology, if implemented under optimum conditions of plant growth. the effectiveness of water hyacinth, a topical weed, for the removal of zinc (zn) and chromium (cr) ions from aqueous solutions has been presented in this article. the potential of this plant in removing metals by ph...
Access control has traditionally assumed a single, monolithic authorization policy, generally expressed as an access matrix. We argue that this assumption does not fit ecommerce applications, which are governed by a potentially large set of independently stated, evolving contracts. In order to support this growing class of applications we propose an enforcement mechanism which uses certified-co...
introduction: non-integrated health information has forced health sector to utilize information and communication technology (ict). national health information infrastructure (nhii) integrates clinical and health information, decreases medical errors as well as costs, and increases patient’s safety. thus, this article aimed to review the feasibility of nhii implementation in iran from perspecti...
lack of scientific and confirmed researches and expert knowledge about evaluation systems for clinical governance development in iran have made studies on different evaluation systems for clinical governance development a necessity. these studies must provide applied strategies to design criteria of implementing clinical governance for hospital's accreditation. this is a descriptive and compara...
Background and Aim: The World Health Organization considers the implementation of the referral system to be a key step in improving the quality of services in health care systems. The purpose of this study was to explain the executive challenges of the electronic referral system in Golestan Province, Iran. Materials and Methods: A qualitative study was conducted in Golestan Province, Iran in 2...
the prevalent communications networks suffer from lack of spectrum and spectrum inefficiency. this has motivated researchers to develop cognitive radio (cr) as a smart and dynamic radio access promised solution. a major challenge to this new technology is how to make fair assignment of available spectrum to unlicensed users, particularly for smart grids communication. this paper introduces an i...
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