Life-Cycle Variations in the Association between Current and Lifetime Income: Replication and Extension for Sweden

We apply Haider and Solon's generalized errors-in-variables model to Swedish income tax data to produce estimates of the association between current and lifetime income. Our estimates demonstrate strong life-cycle patterns. This implies that the widespread use of current income as a proxy for lifetime income leads to inconsistent parameter estimates (i.e., life-cycle bias) even when the proxy is used as the dependent variable. Estimates for comparable cohorts of Swedish and American men demonstrate surprising similarities. There are, however, significant gender and cohort differences in this association that lead to statistically significant and quantitatively meaningful differences in life-cycle biases.

Age at migration and social integration

The paper studies childhood migrants and examines how age at migration affects their ensuing integration at the residential market, the labor market, and the marriage market. We use population-wide Swedish data and compare outcomes as adults among siblings arriving at different ages in order to ensure that the results can be given a causal interpretation. The results show that the children who arrived at a higher age had substantially lower shares of natives among their neighbors, coworkers and spouses as adults. The effects are mostly driven by higher exposure to immigrants of similar ethnic origin, in particular at the marriage market. There are also non-trivial effects on employment, but a more limited impact on education and wages. We also analyze children of migrants and show that parents' time in the host country before child birth matters, which implies that the outcomes of the social integration process are inherited. Inherited integration has a particularly strong impact on the marriage patterns of females

Cathode current density distributions in high power impulse and direct current magnetron sputtering modes

During the operation of high power impulse magnetron sputtering discharges, peak currents in excess of 1 000 A may be observed, leading to large instantaneous power levels. To investigate this method of operation, a series of planar probes have been constructed that allow for the spatial and temporal variations of current across the surface of a cathode to be assessed. These measurements provide information on the flux of charged particles to and from the cathode whilst it is being sputtered. Under operating conditions that led to a peak current of 140 A, measured current densities varied spatially from 0.1 to 1.5 A · cm-2. By the use of a simple model, the measured current densities were used to predict the sputtering rate of the cathode, which allowed for the erosion profile and target lifetime to be estimated. The results suggest that, with regard to sputtering, operating in HiPIMS mode may be less energy efficient than operating in DC mode, but may achieve a higher target utilisation fraction