Studies have suggested that there exists job search and recruiting friction in urban areas. This paper constructs a two-sector (rural and urban) model involving this factor and investigates how it affects migration and what the optimal policies should be. An analysis shows that frictional urban unemployment brings about inter-sector wage differentials and that an economy almost always has disto...

We previously isolated and characterized a cDNA clone specifically expressed in neurons R3 to R8 and R14 of the Aplysia abdominal ganglion (Nambu, J.R., R. Taussig, A.C. Mahon, and R.H. Scheller (1983) Cell 35: 47-56). The cDNA nucleotide sequence and the inferred protein amino acid sequence suggest that this gene encodes the precursor for neuroactive peptides used by these cells. Peptides corr...

How large are the welfare e¤ects of EU enlargement and to what extent are skilled workers a¤ected di¤erently than unskilled workers in each region? In this paper, imperfect labor mobility is modeled within an economic geography framework to examine the welfare implications of goods and factor market integration. While unskilled workers are immobile, forward-looking skilled workers have the opti...

The effects of amphetamine along the rostrocaudal axis of the nucleus accumbens (NAcc) on ventral tegmental area (VTA) intracranial self-stimulation (ICSS) were studied. Eighteen rats were trained to lever press for ICSS in the VTA. Rate-frequency functions were determined by logarithmically decreasing the frequency of cathodal pulses in a stimulation train from a value that induced maximal res...

Little consensus exists in the literature as to the impact of casino gambling on regional economic development. This paper uses a propensity score matching estimator to assess the bottom line impact of casino gambling on the welfare of local residents. It extends the literature in two important ways. First, the traditional matching estimation model is extended to consider a kernel weighting for...

Differences in Quality of Life Estimates Using Rents and Home Values Quality of life differences across areas can be measured by differences in “real wages”, where real wages are computed as nominal wages adjusted for the cost of living. Computing cost of living differences involves several important issues, including how housing prices should be measured. Previous researchers typically have us...

Hepatitis delta virus (HDV) contains a circular RNA which encodes a single protein, hepatitis delta antigen (HDAg). HDAg exists in two forms, a small form (S-HDAg) and a large form (L-HDAg). S-HDAg can transactivate HDV RNA replication. Recent studies have shown that posttranslational modifications, such as phosphorylation and acetylation, of S-HDAg can modulate HDV RNA replication. Here we sho...

Photosynthesis-deficient mutants of the green alga Chlamydomonas reinhardtii were previously shown to arise from nonsense mutations within the chloroplast rbcL gene, which encodes the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (EC 4.1.1.39). Photosynthesis-competent revertants of these nonsense mutants have often been found to be stably heteroplasmic, giving rise to both m...

The chicken major histocompatibility complex (MHC) has abundant SNP and indels, and is closely related with host genetic resistance or susceptibility to disease. The LEI0258 locus is the most variable in the MHC region, and is a useful marker in reflecting the variability of MHC. In this study, we applied the LEI0258 microsatellite marker to investigate polymorphism of MHC in Chinese indigenous...

Policy makers agree that vacant houses are undesirable. Moreover the existence of empty houses is used as an argument for allocating less land for new construction. So higher vacancy rates tend to trigger tighter restrictions on the supply of land. Such tighter restrictions lead to higher prices and, because of the incentives this creates for occupying housing, to lower housing vacancies (‘oppo...