نتایج جستجو برای: cost
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اگر بخواهیم مقادیر زیادی از سیالات را طی مسافت طولانی حمل کنیم، با توجه به موارد اقتصادی، ایمنی، زیست محیطی و قابلیت اعتماد، معمولاً خطوط لوله نخستین گزینه می باشد. یکی از مهم ترین وظایف مجموعه صنعت نفت، احداث خطوط لوله انتقال نفت است که با توجه به هزینه بر بودن آن و نیز گستردگی آن و عبور از مناطق مختلف با شرایط جغرافیایی متفاوت، اهمیت مطالعات اولیه در انتخاب مسیر عبور این خطوط را دو چندان نموده...
background determining and understanding of healthcare costs and its financing method is one of the most important subjects understatement of which can cause such major problems as excessive health costs for households due to the high rate of out-of-pocket expenses. objectives the current study aimed to analyze the healthcare costs and determine the share of isfahan province, iran, from the tot...
extensive research has been devoted to economic production quantity (epq) problem. however, little atten-tion has been paid to problems where depreciation cost and process quality cost must be considered, simulta-neously. in this paper, we consider the economic production quantity model of minimizing the annual total cost subject to depreciation cost and process quality cost, where depreciation...
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
the aim of this study is to assess cost-effectiveness of infliximab, compared with conventional treatments in patients with moderate to severe ulcerative colitis (uc) in iran. we developed an analytical decision model with a 5-year-time horizon to follow up 1000 hypothetical patients, in order to estimate treatment costs and outcomes. hypothetical patients, were individuals with moderate to sev...
background: helicobacter pylori may cause many gastrointestinal problems in developing countries such as iran. we aimed to analyze the cost- effectiveness and cost- utility of the test-and-treat and empirical treatment strategies in managing helicobacter pylori infection. methods: this was a markov based economic evaluation. effectiveness was defined as the symptoms free numbers and ...
i am going to assess shortcomings of transaction cost economics (tce) of oliver williamson. my argument is that this analysis suffers from misidentification of the relevant problem of the theory, analytical incoherence, inconsistent empirical support and methodological defects. in formulating coase's fundamental idea, williamson accepts an efficient equilibrium which occurs once forever, t...
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