There is agreement within industrial organisation economics that an inverted U-shape relationship exists between the level of competition in an industry and the level of innovation in that industry. Thus, when consolidation changes the level of competition in an industry we might expect this to...

Standard approaches to constructing nonparametric confidence bands for functions are frustrated by the impact of bias, which generally is not estimated consistently when using the bootstrap and conventionally smoothed function estimators. To overcome this problem, it is common practice to either...

The paper addresses the distinctiveness of migration flows in the post-Soviet space east of the European Union: the Commonwealth of Independent States (CIS) and Georgia. Population mobility within this region is hypothesized to differ from extra-regional population movements due to the common...

Since the 1990s, Moldova has relied on migration as a vent for labour oversupply and on inflows of migrant remittances as its main engine of economic growth. Labour migrants account for almost a quarter of the labour force and Moldova is one of the most remittance-dependent economies in the...

We suggest two nonparametric approaches, based on kernel methods and orthogonal series, respectively, to estimating regression functions in the presence of instrumental variables. For the first time in this class of problems we derive optimal convergence rates, and show that they are attained by...

The paper addresses the distinctiveness of migration flows in the post-Soviet space east of the European Union: the Commonwealth of Independent States (CIS) and Georgia. Population mobility within this region is hypothesized to differ from extra-regional population movements due to the common...

Since the 1990s, Moldova has relied on migration as a vent for labour oversupply and on inflows of migrant remittances as its main engine of economic growth. Labour migrants account for almost a quarter of the labour force and Moldova is one of the most remittance-dependent economies in the...

Structured observation is often used to evaluate handwashing behavior We assessed reactivity to structured observation in rural Bangladesh by distributing soap containing acceleration sensors and performing structured observa non 4 days later Sensors recorded the number of times soap was moved...

Assume we have a dataset, Z say, from the joint distribution of random variables X and Y , and two further, independent datasets, X and Y, from the marginal distributions of X and Y , respectively. We wish to combine X, Y and Z, so as to construct an estimator of the joint density. This problem...