نتایج جستجو برای: environmental units
تعداد نتایج: 535971 فیلتر نتایج به سال:
Genetic diversity provides insight into heterogeneous demographic and adaptive history across organisms' distribution ranges. For this reason, decomposing single species into genetic units may represent a powerful tool to better understand biogeographical patterns as well as improve predictions of the effects of GCC (global climate change) on biodiversity loss. Using 279 georeferenced Iberian a...
Background & Objectives: Bam is one of the old CL centers and this study aimed to determine and compare the period prevalence among its population and housing units in two periods of 1990-92 and 2010-2012. Methods: In this descriptive–analytical study, data were collected in the questionnaires through door-to-door visits environmental hygiene, and inquiring the history of the CL disease. A que...
Energy efficiency of power plants is less than 60% However, the efficiency of the CHP units can be up to 90 %.CHP units in addition to high efficiency, They reduce environmental pollutants by 13 to 18 percent. The purpose of this thesis is to use the simultaneous power and power generation plants to reach the optimal economic destination for Genco And to maximize economic profit And to minimize...
Prior research considers the IT governance decision to be a trade-off between the cost-efficiency of centralized information processing, and the responsiveness provided by local information processing. Environmental uncertainty plays a major role in this trade-off. In uncertain environments, the need for local information processing dominates the cost-efficiency available from centralization, l...
Childhood is a time of rapid growth and development, accompanied by changes in organ system functioning, metabolic capabilities, physical size, and behavior that can dramatically modify potential illness caused by a toxicant. Pediatricians and other child health care providers need to develop the expertise necessary to take an environmental history, deliver anticipatory guidance, and conduct ap...
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...
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