Research Objects and Scope

Figure 1.24. Diagram of axial force and torque appearing on the drill rod of a bucket-type pile drilling machine in case the main winch is mounted on the lower part of the rod. 30 Figure 1.25. Dynamic survey model of ...

Measures to Improve Selection Efficiency

CR y = b A(yx) R x σ A(y) = r A i x h x σ A(x) σ A(x) = i x h x r A σ A(y) Because: h = σ / σ , so σ = h σ 2 2 2 2 y A(y) P(y) A(y) y P(y) Therefore: CR y = i x h x h y r A σ P(y) 2 If we directly select for ...

Production and Business Results Revenue

Asset utilization efficiency Traditionally, asset efficiency is reflected through the total asset turnover index - the ratio between net revenue and total asset value. 53 In principle, the larger this index, the higher ...

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