Because entities and avatars belong to the different workstation, collision detection for distributed virtual environment has characteristics of completeness and uniqueness, namely that two sides of collision have once and only once response to a collision.

Based on analysis of the average time in a successful transmission and a collision procedure, the saturation throughput of IEEE 802.11 DCF network in hybrid mode is expressed as a function of RTS threshold.

In the case of CO_2 ν_2 vibrational mode, the effect of the second collision in 1D_2S:4CO_2 mixture is about 1/4 of the first collision and the third collision is about 1/16. This result is in agreement with the experiment.

In the case of CO_2 ν_3 vibrational mode, the assumption that the first collision of an initially generated D~* with CO_2 produces the vibrational excitation is within experiment error The effect of the second collision is less than 1/10 of the first collision.

4)、 The jumping rules of the curves of the critical colliding mass of the PML and the colliding minimal time (mass versus time) and those of the curves of the critical colliding amplitude of the external force and the mass of the PML (force versus mass) are similar.

The North Qilian orogenic belt is an elongate tectonic unit that lies between the North China plate to the north and the Middle Qilian microplate to the south, and is formed by a collision of the two plates in the Caledonian.

A solution is obtained by the moment method based on the Boltzmann equation with a collision integral of Maxwellian molecules.

The influence of the solid particles on the carrier gas is taken into account by introducing in the kinetic equation a collision operator of special form.

In the two-dimensional case an approximate solution of the model equations is constructed, and steady nonlinear waves and their interaction in a collision are considered.

The properties of these distributions do not permit the realization of the moment method (in the case of a collision integral in Boltzmann form) in specific transport boundary-value problems.

In nuclear reactor engineering, the vibration of fuel element rod aud tube of heat exchanger is frequently induced by coolant flow. They always strike intermediate supporting baffles during their vibration. This kind of impact is intermittent and repeated. As a result, the wear and fretting of tube will be created and the damage would be caused finally. Therefore, it is very important to study dynamic effect of this impact. Recent years, the investigation for this problem has been made by some authors.The dynamic...

In nuclear reactor engineering, the vibration of fuel element rod aud tube of heat exchanger is frequently induced by coolant flow. They always strike intermediate supporting baffles during their vibration. This kind of impact is intermittent and repeated. As a result, the wear and fretting of tube will be created and the damage would be caused finally. Therefore, it is very important to study dynamic effect of this impact. Recent years, the investigation for this problem has been made by some authors.The dynamic effects of impact for a tube with fixed ends against multiintermediate supports have been studied experimentally and analytically in this paper. The tested model is a stainless steel tube of 13.20 mm O. D., 10.20 mm I. D. and 1436 mm in length. Its ends are clamped. The baffles are simulated with support plates.Their number is up to three and their positions are adjustable. The rigidities of support plates are different. The clearances between the tube and plates are in the range from 0.20mm to1.00 mm. The tested tube is exited by unload The duration and number of times for impact, and time-history of response of the tube motion are recorded.The test results show the tube dominantly vibrates in the form of beam with single span, but the fundamental frequency is higher than its first natural frequency. The curve of the ratio of fundamental frequency of response to first natural frequency of beam vs. the ratio of initial displacement to clearance is given. Also the curve of the duration for contact with support vs. initial displacement-clearane ratio is obtained. The calculation is made by the theory of beam vibration. The analytical and experimental results are in good agreement. Many components of higher frequency are introduced into the response of motion. Their frequencies depend upon the position of support and their magnitudes are relative to intensity of impact. The linear spectrum of frequency for the motion response is given by Fourier Analysis.

We analyse the multiplicity distributions of negative particles produced in p-Ar and p-Xecollisions at 200 GeV/c by a multiple collision model.The energy loss suffered by the inci-dent baryons in its passage through the nucleus is explicitly included in the calculation.Theagreement is satisfactory.

ln order to describe the collisional deactivation of translational energetic D~* produced in the excimer laser photolysis of D_2S and the vibrational excited CO_2 molecules, a multi-collision kinetic model is used. The relationbetween vibrational quantum yield ([CO_2]/[D~*]_0) and the effects of the first, second and third collisions is obtained. When the concentrations of CO_2 in D_2S are larger, the effects of the second, third collisions are bigger.In the case of CO_2 ν_3 vibrational mode, the assumption...

ln order to describe the collisional deactivation of translational energetic D~* produced in the excimer laser photolysis of D_2S and the vibrational excited CO_2 molecules, a multi-collision kinetic model is used. The relationbetween vibrational quantum yield ([CO_2]/[D~*]_0) and the effects of the first, second and third collisions is obtained. When the concentrations of CO_2 in D_2S are larger, the effects of the second, third collisions are bigger.In the case of CO_2 ν_3 vibrational mode, the assumption that the first collision of an initially generated D~* with CO_2 produces the vibrational excitation is within experiment error The effect of the second collision is less than 1/10 of the first collision. And the third collision is less than 1/100. lt's negligible.In the case of CO_2 ν_2 vibrational mode, the effect of the second collision in 1D_2S:4CO_2 mixture is about 1/4 of the first collision and the third collision is about 1/16. This result is in agreement with the experiment. This is th on why the concentrations of CO_2 in D_2S are larger, the quantum yield is bigger.