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 span We prove that these determinantal semi-invariants span the space of all semi-invariants for any quiver and any infinite base field. One outcome is a simple proof that for $g_{m \alpha , n \beta}$ to span $L^2,$ the lattice $(m \alpha , n \beta )$ must have at least unit density. In addition, the closed linear span of all translates of any square integrable function on any compact homogeneous space is determined. Functions whose translates span Lp(R) are called Lp-cyclic functions. A W/O microemulsion was prepared with Span80-PS (petroleum sulfonate) as complex emulsifier, isopropanol as cosurfactant and kerosene as oil phase. The optimal constituents of microemulsion were found from pseudoternary phase diagrams: the mass ratio of Span80 to PS was 4:1 and complex surfactant to cosurfactant was 1:1. The design offers a class of nonlinear FH codes with high security, large linear span and a uniform spread over the entire frequency bandwidth. Resource allocation to the two reproductive modes may depend on environmental conditions, competitive dominance, life span, and genetic factors. Results show that most of the pupae (90%) had an eclosion time span from early June to the end of July. The static pressure distribution along the span in the pressure surface of a high pressure turbine stator is more uniform than that in the suction surface. The static pressure distributions along the span in the pressure surfaces and the suction surfaces of a high pressure turbine rotor and a low pressure turbine rotor are all uneven. The numerical results also indicate that the load of a high pressure turbine rotor will increase with the increase of the span. Control of wind-induced vibration of long-span bridges and tall buildings With the rapid increase in scales of structures, research on controlling wind-induced vibration of large-scale structures, such as long-span bridges and super-tall buildings, has been an issue of great concern. Dynamic response of a long span suspension bridge and running safety of a train under wind action Aerodynamic challenges in span length of suspension bridges To ensure the technological feasibility of suspension bridges with longer spans, the static estimation of feasible span length is then made based on current material strength and weight of cables and deck. Damage identification of a large-span concrete cable-stayed bridge based on genetic algorithm The method had been verified using a long-span concrete cable-stayed bridge in Ningbo, which has been in use for the past four years. Thirteen specimens, with concrete strengths ranging from 94.9 to 105.4 MPa and shear-span ratios of 2.75, were manufactured.

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2008 CNKI－中国知网

2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社