نتایج جستجو برای: predator ratios affect mutual interference of c montrouzieri

تعداد نتایج: 21293166  

Journal: :IEEE Trans. Consumer Electronics 2003
Arun Kumar Arumugam Angela Doufexi Andrew R. Nix Paul N. Fletcher

The anticipated proliferation of various wireless local area network (WLAN) enabled devices in the near future is likely to result in increased mutual interference in the 2.45GHz Industrial, Scientific and Medical (ISM) band. This work investigates the impact of standard Bluetooth and enhanced Bluetooth interference on 802.11g enabled consumer electronic devices and vice versa. Technical design...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1370

the subjects of the study are only the tefl teachers and students at gilan university. to obtain the desired data, a questionnaire which was based on the theories and disecussions gathered, was used as the main data gathering instrument. to determine the degree of relationship between variables, covariance and pearson product moment correlation coefficient were the formulas applied. the data we...

Journal: :Discrete and Continuous Dynamical Systems-series B 2023

This paper studies the existence and multiplicity of periodic orbits a stage-structured predator-prey model with Beddington-DeAngelis functional response. We derive an criterion orbit in terms inequalities system's nine parameters prove that system admits at least two limit cycles or three via subcritical Hopf bifurcation generalized theory hypersurface theory. also each one-parameter possesses...

Journal: :Functional Ecology 2021

Scavenging can have important consequences for food web dynamics, example, it may support additional consumer species and affect predation on live prey. Still, few models include scavenging. We develop a dynamic model that includes predators, scavengers, prey, carrion pool to show ramifications of scavenging in simple webs. explicitly biomass behavior investigate the effect under different assu...

Journal: :Insects 2023

Predator–prey interactions are linked through trophic relationships, and individual population dynamics a function of multiple among many ecological factors. The present study considered the efficacy predatory mites Cheyletus eruditus (Schrank) (Trombidiformes: Cheyletidae) malaccensis Oudemans to manage Liposcelis decolor (Pearman) (Psocodea: Liposcelididae). Prey suppression progeny replaceme...

رحیمی, رقیه, شهیدی نوقابی, شهناز, مهدیان, کامران,

Aphis gossypii Glover (Hem.: Aphididae) is an important pest of vegetables and ornamental plants in greenhouses. Continued use of chemical pesticides for control of this pest has caused several problems and it is necessary to use other management methods, such as biological control. Coccinula elegantula weise (Col.: Coccinellidae) is one the natural enemies of cotton aphid with effective role i...

ژورنال: علوم آب و خاک 2008
جعفری, علی , فتحی پور, یعقوب,

Biological characteristics of Creontiades pallidus Ramber (an important pest of cotton in Khorasan province, Northeastern Iran) and its predator Nabis capsiformis Germar were determined and compared. The experiments were conducted in the laboratory conditions at 26±1؛C, 65±5% RH and a photoperiod of 16:8 (L:D) h. Statistical analysis of data showed that different developmental periods except th...

Journal: :Journal of the Operations Research Society of Japan 2015

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