连续的改变
1.Abstract: In the paper,a finite element model of a uniform cross sectional two-spam continuous beam is chosen to be studied.Through numerical simulation,beam damage diagnosis is realized by computing the first order modal shape change ratio,the absolute difference between the curvature mode shapes and two other eigenparameters of the intact and the damaged beam respectively.
2.The studies show that changes in the levels of SERT and NET in the brain might be associated with the etiology and the antidepressant mechanism.
3.Abstract: A continuity wave model is put forward for the dispersion processof liquid-liquid two-phase system,by coupling mass and momentum conservation equations of two-fluid model.The conditions that result in a dispersion choke and the weak instability of a dispersion process are derived from the model.The phenomena of catastrophic inversion and transitional inversion are explained.The effect of drop size distribution on the maximum volume concentration of a emulsion is predicted using the model.According to the theory herein,emulsion inversion is the regime transition of liquid-liquid system due to the instablity of a dispersion process.The effect of drop size distribution on the maximum volume concentration of a liquid-liquid emulsion only occurs in a certain range of Weber numbers.
4.In this paper, based on the combination ARQ protocol (SR+GBN ARQ) of the selective-repeat (SR ARQ) plus go-back-n (GBN ARQ), an adaptive ARQ protocol with packet length changing according to the slow Rayleigh fading condition estimated with the number of continuous postive acknowledgments (ACK) or negative acknowledgments (NACK) received by the transmitter is presented.
5.Abstract: In light of thicker grain and smaller viscosity of debris flow,a segmented simulation of the debris flow with flume is presented.For the first time.more difficult resistance similarity is brought about by geometric rate without excessive coarsing and discontinuous similarity of sand grain composition in model is eliminated with different grain scale.On this basis the density similarity and sand conveying similarity are achived.The method presented is verified through a model test case.
6.The paper discuses three ways as folding, blob and animation, to delete the concept of floor, analyses the new features of building space form such as twist, smooth, curve, fuzzy etc. and explores possibilities of architectural design supported by digital technology and changes in aesthetics.
7.fire distributed in depth by successive changes in the elevation of the gun.
8.the neutral theory claims that the overwhelming majority of evolutionary changes at the molecular level are caused by random fixation (due to random sampling drift infinite population) of selectively neutral (i.e.,selectively equivalent) mutants under continued inputs of mutations.
9.ZnS、CdS are both the direct bandgap semiconductor compound. In ZnS, the Zn is replaced by Cd~2+,It arouses the descend of the bottom of the conduction bandand. So it makes the forbidden bandwidth of the luminescent crystal change, the energy level of luminescence center changes immediately, therefore the luminescence spectrum is changed continuously.
10.A shortcut design using the Fenske Underwood Gilliland(FUG) equations of continuous distillation design is developed based on the reasonable approximation that the batch distillation column can be considered as a continuous distillation column with changing feed The method is a powerful and computationally fast tool that can be used in batch vacuum distillation process design
