A Gram-negative, aerobic, rod-shaped, motile Brevundimonas-like bacterial strain, J22(T), was isolated from black sand collected from Soesoggak, Jeju Island, Korea. Growth of strain J22(T) was observed in R2A medium at temperatures between 10 and 42 degrees C (optimum 30 degrees C), between pH 6.5 and 10.5 (optimum pH 7.5) and at a NaCl concentration between 0 and 4 % (w/v) (optimum 0-1 %). Phy...

Achieving the goal of increasing both crop yield and water-use efficiency with a better irrigation regime is major challenge in semi-arid areas. In this study, we presented two-season field experiment (October 2018–June 2019 October 2019–June 2020) that considered drought stresses, i.e., no (W0), irrigated jointing (W1), flowering (W2) after re-greening, wheat varieties (S086; J22). The results...

Flexible Labor Supply Models Discrete-choice models of labor supply have become very popular for ex ante evaluations of policy reforms as they easily account for non-convex budget sets. We test the constraints imposed in practice on these models and suggest a fully flexible model that significantly improves fit. JEL Classification: H31, J22

We show that a steeply increasing workload before a deadline is compatible with time-consistent preferences. The key departure from the literature is that we consider a stochastic environment where success of effort is not guaranteed. JEL Classification: D91, J22, D81, D11.

a r t i c l e i n f o Article history: Received 27 December 2017 Received in revised form 2 February 2018 Accepted 2 February 2018 Available online 17 February 2018 JEL classification: C91 D91 J22 J33 L2 M5

On the Identification of Frisch Labor Supplies This paper examines how Frisch labor supplies, and other structural components of the intertemporal model of labor supply, can be recovered from estimates obtained with the approach developed by Heckman and MaCurdy. JEL Classification: J22

We consider a broad class of intertemporal economic problems and characterize the short-run long-run responses demand for good to permanent increase in its market price. Depending on interplay between self-productivity time discounting, we show that dynamic substitution effects can generate price elasticities opposite signs short run long run. (JEL D11, D15, H20, J22, J24)

In recent decades, gentrification has transformed American central city neighborhoods. I estimate a spatial equilibrium model to show that the rising value of high-skilled workers’ time contributes cities. increasing raises cost commuting and exogenously increases demand for locations by workers. While change in modest direct effect on cities, is substantially magnified endogenous amenity drive...

The authors use a laboratory experiment to examine the impact of relative wages on labor supply. They test the hypothesis that, ceteris paribus, making a given wage high (low) relative to other wage levels will lead to an increase (decrease) in labor supply. They find that labor supply does respond significantly to relative pay, and in the expected direction. However, when a strong enough reaso...

This paper examines the relationship between household income shocks and child labor. In particular, we investigate the extent to which transitory income shocks lead to increases in child labor and whether household asset holdings mitigate the effects of these shocks. Using data from a household panel survey in Tanzania, we find that both relationships are significant. We investigate mechanisms...