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Instrumental variable (IV) analysis is not only able to contribute to causal inference, but also able to carry out the comparative analysis of instrumental variables estimation and least squares estimation, which makes us profoundly understanding and recognizing the social mechanisms and processes. To analyze social science, instrumental variable plays an important role in solving endophytism problem...
The mathematical model between the knife-carriage feeding speed and the diameter of the log is established. An automatic control system of hydraulic log-core veneer lathe based on C8051F020 is studied in this paper, C8051F020 is used to control the hydraulic system feeding. The displacement sensor is used to measure and feed back the diameter of the log, the control system automatically regulates...
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