With constant deepening of development outlook of urban and rural integration, education circle starts to attach great importance to reform of personnel training program. Since scarcity of land resource and key role of land management in urban and rural integration, it is urgent to optimize the...

With the development of the society, the undergraduates training modes of land resources management major have diversified developed. The land resources management majors in universities with different background have various features in China. Chongqing Technology and Business University was...

Despite the high CO2 emission intensity of fossil and especially coal fired energy production, these energy carriers will play an important role during the coming decades. The case study identifies the main technological trajectories concerning more efficient fossil fuel combustion and explores...

<em>Landoltia punctata</em>, a widely distributed duckweed strain with the ability to accumulate starch, was used as a novel feedstock for bioethanol production by <em>Saccharomyces cerevisiae</em>. To improve ethanol production, pectinase pretreatment was used to release much more glucose from <em>L. punctata</em> mash...

This study examines whether the associations between neighborhood conditions and children's health can be indirect and operate through aspects of family functioning. We use data from the 2007 National Survey of Children's Health in the United States with the interviewed parents/guardians as the...

We examine the finite sample properties of the maximum likelihood estimator for the binary logit model with random covariates. Analytic expressions for the first-order bias and second-order mean squared error function for the maximum likelihood estimator in this model are derived, and we...

We consider the relative merits of various saddlepoint approximations for the c.d.f. of a statistic with a possibly non-normal limit distribution. In addition to the usual Lugannani-Rice approximation we also consider approximations based on higher-order expansions, including the case where the...

We derive saddlepoint approximations for the density and distribution functions of the half-life estimated by OLS from an AR(1) or AR(p) model. Our analytic results are used to prove that none of the integer-order moments of these half-life estimators exist. This provides an explanation for the...

We examine the finite sample properties of the MLE for the Logit model with random covariates. We derive the second order bias and MSE function for the MLE in this model, and undertake some numerical evaluations to illustrate the analytic results. From these numerical results we find, for...

A novel three-phase film with conductive acetylene black (AB) and ferroelectric phase (BaTiO3) introduced intoβ-polyvinylidene fluoride (β-PVDF) was prepared by using dip-coating method. The high dielectric constant of 650 can be obtained in the AB–PVDF/BaTiO3 composite film when AB content...