نتایج جستجو برای: searching efficiency
تعداد نتایج: 436659 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...
the aim of this study is investigating the effect of teaching “metacognitive strategies” on the way which scientific information retrieval workes by the using of google scholar searching machine on the students of ms in the psycology & education faculty of allameh tabatabayi university in 2007-2008 academic year. the statistical community was the students of ms in psychology & education facult...
functional response in natural enemies is affected not only by host and natural enemy characteristics but also, the application of pesticide to pest population can affected the parameters of functional response as well as efficiency of natural enemy. in this research, the side effects of two pesticides, hexaflumuron and pymetrozin and also acaricide spirodiclofen and plant extracts, caiotropis ...
In recent years, a number of machine learning approaches to literature-based gene function annotation have been proposed. However, due to issues such as lack of labeled data, class imbalance and computational cost, they have usually been unable to surpass simpler approaches based on string-matching. In this paper, we investigate the use of semantic kernels as a way to address the task’s inheren...
the foraging behavior of a natural enemy is greatly affected by temperature. the influence ofdifferent constant temperatures on the functional response and prey consumption of the mated female ofneoseiulus barkeri hughes on nymphal stages of tetranychus urticae koch was evaluated. four ambienttemperatures (20, 25, 30 and 35 â± 1â°c) and six prey densities (2, 4, 8, 16, 32 and 64 individuals) we...
قدرت جستجو، یکی از پارامترهای کلیدی واکنش تابعی است که از اجزای مهم در انتخاب شکارگرها و پارازیتوئیدها در کنترل بیولوژیک است. قدرت جستجوی کفشدوزک Scymnus syriacus Mulsant با تغذیه از شتهی اقاقیا،Koch Aphis craccivora، در پنج سطح (صحنه) متفاوت آزمایشگاهی (195، 247، 304، 385 و 650 سانتیمتر مربع) روی گیاه لوبیا، Vicia fabae L.، تعیین شد. برای تعیین این پارامتر، واکنش تابعی شکارگر در تراکمهای مختلف...
This paper proposes a novel method to improve the efficiency of a swarm of robots searching in an unknown environment. The approach focuses on the process of feeding and individual coordination characteristics inspired by the foraging behavior in nature. A predatory strategy was used for searching; hence, this hybrid approach integrated a random search technique with a dynamic particle swarm op...
the green peach aphid,myzuspersicae (hem:aphididae) is a polyphagus aphid species that infects over 400 plants species belonging to 40 different families. the oenopia conglobata contaminata (col.: coccinellidae) is one of the most important predator of orchard pests in iran. in this study, efficiency and predatory of this predatoron green peach aphid m.persicaewas evaluated under laboratory c...
The codeword searching sequence is sometimes very vital to the efficiency of a vector quantization (VQ) encoding algorithm. In this paper, we evaluate some necessary criteria for the derivation of an optimal searching sequence and derive the optimal searching sequence based on such criteria.
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