Chapter organization Introduction International Labor mobility International Borrowing and Lending Direct Foreign Investment and Multinational Firms Summary Appendix: More on Intertemporal Trade

Introduction A Standard Model of Trading Economy International Transfers of Income: Shifting the RD Curve Tariffs and Export Subsidies: Simultaneous Shifts in RS and RD Summary Appendix: Representing International Equilibrium with Offer Curves

Chapter Organization Introduction A Model of a Two-Factor Economy Effects of International Trade Between Two-Factor Economies Empirical Evidence on the Heckscher-- Model Summary Appendix: Factor Prices, Goods Prices, and Input Choices

Ch. 10 Autocorrelated Disturbances In a time-series setting, a common problem is autocorrelation, or serial corre- lation of the disturbance across periods. See the plot of the residuals at Figure

Previously saw (in Unit 19)that a multi degree-of-freedom system has the same basic form of the governing equation as a single degree-of-freedom system The difference is that it is a matrix equation

Now consider the case of compressive loads and the instability they can cause. Consider only static instabilities (static loading as opposed to dynamic loading [ e.g., flutter) From Unified, defined instability via a system becomes unstable when a negative stiffness overcomes

Thus far, we have concentrated on the bending of shell beams. However, in the general case a beam is subjected to axial load. F · bending moments,M · shear forces,S torque(torsional moments)

Thus far have considered only static response. However, things also move, this includes structures Can actually identify three \categories\ of response A.(Quasi)-Static [quasi because the load must first be applied

Thus far have considered separately beam - takes bending loads column -takes axial loads Now combine the two and look at the beam-column (Note: same geometrical restrictions as on others

For a number of cross-sections we cannot find stress functions. However, we can resort to an analogy introduced by Prandtl(1903) Consider a membrane under pressure p, Membrane\. structure whose thickness is small compared to surface