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تعداد نتایج: 16831124 فیلتر نتایج به سال:
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
هدف اصلی در این پایان نامه، مکان¬یابی بهینه ایستگاه¬های تزریق گندزدا و همچنین تعیین میزان تزریق در این ایستگاه¬ها می¬باشد. بنابراین انتخاب بهترین گره های شبکه آبرسانی از بین کلیه گره های با پتانسیل نصب ایستگاه تزریق گندزدا، به¬منظور تزریق کلر اضافه در شبکه توزیع برای تامین نیازهای کیفی آب آشامیدنی مدنظر می¬باشد. هدف کیفی اول در شبکه¬های آبرسانی، تامین مقدار کلر باقیمانده در محدوده استاندارد آب ...
Abstract Introduction & Purpose: Indoor air quality, particularly in health care facility, is important. One of the most important factors affect the air quality is aerosols due to carrying microorganisms and deposit in the respiratory tract. Therefore, the purpose of this study was to measure the concentration of suspended particles in outdoor and indoor of Dena hospital and determine the re...
A Raoult’s law-based screening-level assessment methodology was developed to calculate the carcinogenic and noncarcinogenic risks from ingestion of coal tar-contaminated water and it was applied to ten coal tars obtained from sites in the eastern United States. This approach provides a simple risk screening based on the conservative assumptions of Tier 1 in both the ASTM RBCA methodology and th...
when we return to the concept of poetry and the age-old discussion about the uselessness or the usefulness of the poets to the private and public state of human beings, originating from plato and aristotles views about poets respectively, there emerges the question of the role of poetry in human beings lives. in the same manner, with the advance of technology and the daily progress and improvem...
Pollution of surface water with harmful chemicals and eutrophication of rivers and lakes with excess nutrients are serious environmental concerns. The U.S. Environmental Protec‐ tion Agency (USEPA) estimated that 53% of the 27% assessed rivers and streams miles and 69% of the 45% assessed lakes, ponds, and reservoirs acreage in the nation are impaired (USEPA, 2010). In Mississippi, 57% of the 5...
Sections relevant to biotechnology applications in food safety: Coordination was done by Masami Takeuchi (Food Safety Officer, Nutrition and Consumer Protection Division). Significant contributions were made by Sridhar Dharmapuri, FAO consultant. Technical contributions from several FAO colleagues, including Maria de Lourdes Costarrica (Senior officer, Nutrition and Consumer Protection Division...
the following null hypothesis was proposed: h : there is no significant difference between the use of semantically or communicatively translates scientific texts. to test the null hypothesis, a number of procedures were taken first, two passages were selected form soyrcebooks of food and nutrition industry and gardening deciplines. each, in turn, was following by a number of comprehension quest...
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