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Daily reference crop evapotranspiration ETο was calculated by means of the Penman-Monteith method, and the monthly ETο value was accumulated based on two different time steps of daily and monthly mean meteorological data. The adopted data include meteorological records from Yanzhou (1981-1986)and Heze weather station (1981-1986), Dingtao weather station (1997-2002). The differences of ETο value calculated...
A diode-end-pumped Q -switched mode-locking Nd:GdVO4 laser operating at 1.34 μm with an acousto-optical (AO) Q-switch in a compact V-type cavity was realized in our experiment for the first time. When the AO Q-switch repetition rate was 10 kHz, the maximum average output power of 750 mW and the pulse energy of 75 μ were obtained at the maximum incident pump power of 9 W. The mode-locking modulation...
Particle swarm optimization (PSO) has shown good search ability on many optimization problems. However, PSO easily suffers from local optima on some complex problems, such as multimodal function problems. This paper presents an improved PSO, namely IPSO, which employs an adaptive chaotic mutation operator. The adaptive mutation adjusts the step size of mutation in terms of the distance between the...
According to 1st order slip velocity boundary, modified Reynolds equation for microscale gas journal bearings is presented with consideration of effective viscosity of gas under rarefied condition. Modified Reynolds equation is solved using the finite difference method. Non-dimensional pressure distribution, load capacity and attitude angle for microscale gas journal bearings under different reference...
Procurement management is an important process in large-scale projects because large-scale projects heavily depend on building materials from suppliers. This paper applies the basic idea of cooperative game theory and bargaining theory to analyze the cooperation in the procurement of the large-scale projects. We develop two bargaining games of the material procurement between one contractor and one...
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