نتایج جستجو برای: evaluation of diversity
تعداد نتایج: 21212557 فیلتر نتایج به سال:
introduction: nowadays and with the increasing role of the worldwide web as one of the most important sources of information on the one hand, and the enhancement of its usability on the other, it is necessary for the web designers and developers to be familiar with the criteria that make a web portal usable. therefore, the present study aimed to provide knowledge about the criteria of usability...
background and aim: hearing loss is one of the most prevalent disabilities. children with severe-to-profound sensorineural hearing loss (snhl) normally experience numerous problems. however, the extents of educational and communicational problems are not usually diagnosed in these children. therefore, the aim of the current study was to compare children with hearing loss using hearing aids with...
PERFORMANCE EVALUATION OF COMMUNICATION SYSTEMS WITH TRANSMIT DIVERSITY
This paper describes a study on diversity in image search results. One of the first test collections explicitly built to study diversity – the ImageCLEFPhoto 2008 collection – was used in an evaluation exercise in the summer of 2008. Analyzing 200 of the runs submitted by 24 research groups enabled the relationship between precision and result diversity to be studied. In addition, the level of ...
مطالعه حاضر با هدف شناسایی فونستیک پرندگان و مقایسه تنوع گونه ای جامعه پرندگان بین زیستگاه های مختلف شهرستان نقده انجام گرفت. برای این منظور پرندگان منطقه مورد مطالعه از تیرماه 1389 تا خرداد 1391 در چهار زیستگاه استپ های نیمه خشک، تالابی، کشاورزی و کوه های مرتفع پایش گردید. برای بررسی اهمیت هریک از زیستگاه ها برای پرندگان، شاخص های تنوع گونه ای زیستگاه ها مورد مقایسه قرار گرفت. در مجمو...
PERFORMANCE EVALUATION FOR COMMUNICATION SYSTEMS WITH RECEIVE DIVERSITY AND INTERFERENCE
Evaluation of range conditions and plant diversity circumstances can help to rangeland managers who establish their managerial approaches on the basis of ecological capabilities of rangeland ecosystems. Hence, surveying of rangelands was done in four sites of northern Alborz Mt. including western Alborz (Masooleh site), west to middle Alborz (Javaherdeh site), central area (Polour site), and ea...
Choosing management strategies are influencing the vegetation characteristics and plant diversity in rangelands. We have studied the effects of three management treatments including overgrazing, exclusure, and exclusure with restoration operations on vegetation characteristics of plant cover, composition, and diversity in Kiasar Chardange summer rangelands. In each management treatment, three r...
Biodiversity is one of the important aspects of natursal systems which supports ecosystem functions. Therefore, the preservation of biodiversity is necessary for human well-being. The curreny study aimed to investigate changes of alpha and beta diversity and its components along the elevation gradient of five classes and to evaluate the effects of physical and chemical characteristics of soil o...
The community structure of hard and soft corals, with an emphasis on hard corals, was determined by means of line-transects on 9 onand off-shore reefs of different type and different wave exposure in the Northern Red Sea near Hurghada in Egypt. Coral communities were found to differentiate along a horizontal windand wave-exposure gradient. Exposed communities were dominated by Acropora species,...
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