Recently China's central government has promoted public goods investment in pursuit of rural development and poverty reduction. However, the top down nature of investment planning may lead to mismatches between public goods projects and the demands of local residents. Using village- and household-level survey data, this study seeks to identify the determinants of project implementation, focusing on investments in roads, drinking water, and irrigation. Contrary to some popular perception, our results suggest symmetry between farmers' reported demand and the types of projects implemented in their villages. The relative contribution of local demand to project implementation is seen to vary, however, across different types of public goods. (JEL D71, H41, H77, P35)
Nelson CT, Gao P, Jokisaari JR, Heikes C, Adamo C, Melville A, Baek S-H, Folkman CM, Winchester B, Gu Y, et al.Domain dynamics during ferroelectric switching. Science [Internet]. 2011;(6058):968-971. 访问链接 SCI被引用次数：278.
Chinese college graduates have faced increasing labor market competition since the expansion of tertiary education. Given rigid market demand, graduates with realistic earnings expectations may experience a more efficient job search. Using the 2008 MYCOS College Graduate Employment Survey, this study finds that a 1 000 yuan reduction in a graduate鈥檚 reservation wage can significantly increase the probability of finding a job by 66% and increase the likelihood of being employed six months after graduation by 92%. In addition, the gap between the reservation wage and the market wage has a positive impact. By slightly adjusting earnings expectations, college graduates can significantly improve job search efficiency. Market wages should be seen as reference points when adjusting income expectations.
The surface/interface energy theory based on three configurations proposed by Huang et al. is used to study the effective properties of thermoelastic nanocomposites. The particular emphasis is placed on the discussion of the influence of the residual interface stress on the thermal expansion coefficient of a thermoelastic composite filled with nanoparticles. First, the thermo-elastic interface constitutive relations expressed in terms of the first Piola-Kirchhoff interface stress and the Lagrangian description of the generalized Young-Laplace equation are presented. Second, the Hashin's composite sphere assemblage (CSA) is taken as the representative volume element (RVE), and the residual elastic field induced by the residual interface stress in this CSA at reference configuration is determined. Elastic deformations in the CSA from the reference configuration to the current configuration are calculated. From the above calculations, analytical expressions of the effective bulk modulus and the effective thermal expansion coefficient of thermoelastic composite are derived. It is shown that the residual interface stress has a significant effect on the thermal expansion properties of thermoelastic nanocomposites.
The surface/interface energy theory based on three configurations proposed by Huang et al. is used to study the effective properties of thermoelastic nanocomposites. The particular emphasis is placed on the discussion of the influence of the residual interface stress on the thermal expansion coefficient of a thermoelastic composite filled with nanoparticles. First, the thermo-elastic interface constitutive relations expressed in terms of the first Piola-Kirchhoff interface stress and the Lagrangian description of the generalized Young-Laplace equation are presented. Second, the Hashin's composite sphere assemblage (CSA) is taken as the representative volume element (RVE), and the residual elastic field induced by the residual interface stress in this CSA at reference configuration is determined. Elastic deformations in the CSA from the reference configuration to the current configuration are calculated. From the above calculations, analytical expressions of the effective bulk modulus and the effective thermal expansion coefficient of thermoelastic composite are derived. It is shown that the residual interface stress has a significant effect on the thermal expansion properties of thermoelastic nanocomposites.