نتایج جستجو برای: the quality indices
تعداد نتایج: 16187091 فیلتر نتایج به سال:
The present study was conducted for the first time to investigate and identify the ecological quality status (EcoQ) of Gorgan Bay and also to emphasize the degree of agreement between the results of different benthic macrofauna indices, introduction of appropriate index and utilization of basic results in environmental management programs in the region. To do, 22 sites were selected and macrobe...
Introduction: Scaling and corrosion is one the most important indices in water quality evaluation. Occurrence of scaling or corrosion may create disorder in economy of water and wastewater industry. In addition, corrosion produces by - products in water leading to health problem and reduction of water pipe life-time. In this study, the condition of scaling and corrosion in Bandar Abbas wa...
چکیده هدف از پژوهش حاضر بررسی رابطه کیفیت زندگی کاری و رفتار شهروندی سازمانی در مدارس مقطع متوسطه پسرانه شهر تهران از دیدگاه دبیران بود. روش پژوهش حاضر توصیفی و از نوع همبستگی بود. از بین دبیران مدارس شهر تهران تعداد 380 نفر به روش نمونه گیری خوشه ای چند مرحله ای به عنوان نمونه پژوهش انتخاب شدند و با تکمیل پرسشنامه ی کیفیت زندگی کاری والتون(1975) و پرسشنامه ی رفتار شهروندی سازمانی پودساکو...
Abstract— Self-Organizing Maps for Structures (SOM-SD) are neural networks models capable of processing structured data, such as sequences and trees. The evaluation of the encoding quality achieved by these maps can neither be measured exclusively by the quantization error as in the standard SOM, which fails to capture the structural aspects, nor by indices measuring topology preservation, beca...
This study attempts to empirically examine the relationship between the quality of the institutional environment and income inequality. In order to determine the causality and direction of this relationship, a Vector Autoregressive Model (VAR) has been used, and to overcome the limitations pertaining to the data, a panel composed of data from 121 countries has been used and tested; hence, a Pan...
Quality indices in clustering are used not only to assess the quality of the partitions but also to determine the number of clusters in the final result. When these indices are evaluated in a case study, real data conditions or different clustering algorithms are seldom taken into account. Here, some of the standard indices used in the literature are compared using more realistic databases that...
This paper presents the main results of a benchmarking survey for Northern Power System in Vietnam to measure the Power Quality and Reliability in regard to short and long-term interruption. The survey was conducted in 28 provinces and cities divided into four groups to compare: mountainous vs. delta areas and industrial vs. agricultural areas. The evaluation of power quality is based on reliab...
In the recent years, developments in the field of information and telecommunications are pursued by major changes in different areas of human life. Human has constantly employed the technology and track record of human life is abundant with innovation in information and communication technologies (ICT) which are called as new or high- technology. Therefore, ICT Development Indices (IDI) are rem...
The effect of Palangan fish farms on water quality of Sirvan River was investigated using physicochemical and biological indicators from January 2015 to June 2015. Five stations were determined including 1) before the fish farm 2) after the fish farm effluent 3) sub-branch 4) 100 meter after fish farm effluent and 5) 1000 meters after fish farm effluent. EC showed significant differences in dif...
abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...
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