A plasticity-fracture constitutive model is presented for prediction of the behavior of confined plain concrete. A three-parameter yield surface is used to define the elastic limit. Volumetric plastic strain is defined as hardening parameter, which together with a nonlinear plastic potential forms a non-associated flow rule. The use of non-associated flow rule improves the prediction of the dil...

Many program veriication, testing and performance prediction techniques rely on analysis of statically-identiied control-ow paths. However, some such paths may be semantically`dead' because they can never be followed at run time, and should therefore be excluded from analysis. It is shown how the formal semantics of those statements comprising a path provides a sound theoretical foundation for ...

A new zero-equation model (ZEM) is devised with an eddy-viscosity formulation using a stress length variable which the structural ensemble dynamics (SED) theory predicts. The ZEM distinguished by obvious physical parameters, quantifying underlying flow domain universal multi-layer structure. SED also utilized to formulate anisotropic Bradshaw stress-intensity factor, parameterized eddy-to-lamin...

The dynamic recrystallization (DRX) behavior of as-extruded AM50 magnesium alloy was modelled and simulated by a cellular automaton (CA) method. Isothermal compression experiments were conducted, the characteristic parameters in CA model obtained testing stress–strain flow curves wide temperature range 250–450 °C strain rate 0.001–10 s?1. stress, DRX volume fraction grain size predicted simulat...

more than half of all hydrocarbon reservoirs are naturally fractured reservoirs (nfrs), in which production forecasting is a complicated function of fluid flow in a fracture-matrix system. modelling of fluid flow in nfrs is challenging due to formation heterogeneity and anisotropy. stress sensitivity and depletion effect on already-complex reservoir permeability add to the sophistication. horiz...

In order to improve the accuracy of all kinds of information in the cash business and enhance the linkage between cash inventory forecasting and cash management information in the commercial bank, the first moving average prediction method, the second moving average prediction method, the first exponential smoothing prediction and the second exponential smoothing prediction methods are adopted ...

Turbidity currents in the ocean and lakes are driven by suspended sediment. The vertical profiles of velocity and excess density are shaped by interaction between the current and bed as well as between the current and the ambient water. This paper presents 48 series of experiments in which saline gravity currents flow through a laboratory sinuous flume. flume contains three successive bends wit...

Three types of turbulence models which account for rotational effects in noninertial frames of reference are evaluated for the case of incompressible, fully developed rotating turbulent channel flow. The different, types of models are a Coriolis-modified eddy-viscosity model, a realizable algebraic stress model, and an algebraic stress model which accounts for dissipation rate anisotropies. A d...

short-term prediction of traffic flow is central to alleviating congestion and controlling the negative impacts of environmental pollution resulting from vehicle emissions on both inter- and intra-urban highways. the strong need to monitor and control congestion time and costs for metropolis in developing countries has therefore motivated the current study. this paper establishes the applicatio...

Every year tens of millions people suffer from depression and few them get proper treatment on time. So, it is crucial to detect human stress relaxation automatically via social media a timely basis. It very important manage before goes into severe problem. A huge number informal messages are posted every day in networking sites, blogs discussion forums. This paper describes an approach the usi...