the russian wheat aphid (rwa), diuraphis noxia has been known as a major pest of small grains, particularly wheat, worldwide. this study evaluated the biological responses of rwa to six wheat cultivars including yavarus, pishgam, aadl, omid, darab 2 and sepahan. the experiment was conducted under greenhouse conditions of 25 ± 2 °c, 55 ± 10 % r. h. and a photoperiod of 16:8 (l: d) h. resistance ...

The probabilistic serial (PS) rule is one of the most prominent randomized rules for the assignment problem. It is well-known for its superior fairness and welfare properties. However, PS is not immune to manipulative behaviour by the agents. We examine computational and non-computational aspects of strategising under the PS rule. Firstly, we study the computational complexity of an agent manip...

It is doubtful whether I shall be able to meet the high standards set by previous speakers. I shall not prove deep theorems. I shall not present astonishing new results. Instead of this I shall try to catch your attention by a fictitious dialogue. I shall employ the help of imaginary discussants like the “Bayesian” or the “experimentalist.” A “chairman” will determine who speaks next, but he sh...

Structural vibration control is one of the most important features in structural engineering. Real-time information about seismic resultant forces is required for deciding module of intelligent control systems. Evaluation of lateral forces during an earthquake is a complicated problem considering uncertainties of gravity loads amount and distribution and earthquake characteristics. An artificia...

Contribution of the gluon distribution in the nucleon to the cross section for the pion diffractive dissociation into two jets has been calculated recently. In addition, we present here calculation of contribution of the quark distributions to this process. It is expected usually that the quark contributions are much smaller than the gluon one at high energies. We show that, under the condition...

this study was conducted to collect comprehensive identification about markhoz goat population and to simulate past dynamics of the population under its living conditions.census data of the population size and the required parametersfor the simulation modelwere obtained frompublished data or were collected in its habitat in the last 3 years. in this study, past population dynamics and expected ...

in order to study fruit  quality changes in apple cultivar gala, related to ripening stage and storage time, an experiment was conducted in a split plot arrangement in randomized complete block design with four replicationsin the area of damavand– jaban for three years. five levels of sampling times in storage were assigned to main plots, and three levels of harvesting times were randomized in ...