نتایج جستجو برای: specific searching efficiency

تعداد نتایج: 1435137  

Journal: :نامه انجمن حشره شناسی ایران 0
r. hosseini a. a. sahragard kh. madahi

searching efficiency (a') (attack rate) and handling time are two major components of natural enemies’ functional response and are usually used to evaluate their effectiveness. the age-specific searching efficiency of aphidoletes aphidimyza (rondani) was studied during its larval stage. the experiment was conducted in terms of age-specific functional response to the varying density (5, 1...

Journal: :journal of crop protection 2014
reza jalalipour ahad sahragard azadeh karimi-malati

searching efficiency and handling time are two major components of functional response and are usually used to evaluate effectiveness of natural enemies. the effect of different foraging periods on the functional response of larval aphidoletes aphidimyza (rondani) (dip.: cecidomyiidae) feeding on third instar nymphs of aphis craccivora was studied. the experiment was conducted in terms of time-...

Journal: :journal of crop protection 2012
rahil asadi ali asghar talebi jafar khalghani yaghoub fathipour saeid moharramipour

this study was conducted to evaluate the age-specific functional response of psyllaephagus zdeneki noyes & fallahzadeh (hymenoptera: encyrtidae) at different nymph densities of olive psyllid, euphyllura pakistanica loginova (hemiptera: psyllidae). due to parasitoid behaviour of feeding and parasitizing the host, both traits were separately explored on a daily functional response. results of...

Journal: :journal of crop protection 2015
amaneh pasandideh ali asghar talebi hamidreza hajiqanbar zahra tazerouni

the pea aphid, acyrthosiphon pisum (harris) is one of the most important pests of pea throughout the world.host stage preference under choice and no-choice tests and age-specific functional response of praon volucre (haliday) parasitizing a. pisum were investigated. the experiments were carried out under laboratory conditions at 25 ± 1 °c, 60 ± 5% rh and a photoperiod of 14: 10 h (l: d). functi...

2013
Nathan Gilbert Ellen Riloff

Most coreference resolvers rely heavily on string matching, syntactic properties, and semantic attributes of words, but they lack the ability to make decisions based on individual words. In this paper, we explore the benefits of lexicalized features in the setting of domain-specific coreference resolution. We show that adding lexicalized features to off-the-shelf coreference resolvers yields si...

A. A. Sahragard Kh. Madahi R. Hosseini

قدرت جستجو (a') یا نرخ حمله و زمان دست‌یابی دو جزء مهم واکنش تابعی دشمنان طبیعی هستند و به‌طور معمول برای ارزیابی کارایی آن‌ها استفاده می‌شوند. قدرت جستجوی وابسته به عمر مگس Aphidoletes aphidimyza (Rondani) در دوره‌ی لاروی آن مورد مطالعه قرارگرفت. آزمایش براساس واکنش تابعی وابسته به عمر نسبت به تراکم‌های مختلف (5، 10، 20، 40، 60 و 80) پوره‌های سن سوم Aphis craccivora (Koch) در شرایط1 ± 23 درجه‌...

2008
Luc Brun Jean-Hugues Pruvot

A string matching approach is proposed to find a region correspondance between two images. Regions and their spatial relationships are represented by two combinatorial pyramids encoding two segmentation hierarchies. Our matching algorithm is decomposed in two steps: We first require that the features of the two matched regions be similar. This threshold on the similarity of the regions to be ma...

Journal: :نامه انجمن حشره شناسی ایران 0
r. hosseini a . sahragard r. sabaghi

searching efficiency is a key parameter of functional response which is in turn the major components in the selection of predators and parasitoids for biological control. searching efficiency of scymnus syriacus mulsant feeding on aphis craccivora koch was determined at five different experimental arenas (i.e. 195, 247, 304, 385 and 650 cm2) on broad bean (vicia fabae l.). to do this, functiona...

Journal: :journal of agricultural science and technology 2014
r. nikbin a. sahragard m. hosseini

the parasitoid trichogramma brassicae bezdenko is used for inundative releases in biological control programs against lepidopteran pests in agro-ecosystems. age-specific functional responses of t. brassicae to different egg densities (5, 10, 20, 30, 40, 60, and 80) of sterilized eggs of ephestia kuehniella at 23±1°c, 60±5% rh, and 16:8 h (l:d photoperiod ) were studied. e. kuehniella densities ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید