Contributions to public goods simulated in economists' laboratory experiments have two peculiarities from the perspective of statistical modelling. There is a variety of contributor behaviours (Ledyard, 1995), suggestive perhaps of separate classes of individuals, and contributions are doubly censored. We present an econometric model of contributions in sequential play, which takes into account...

This research analyses the efficiency of China’s banks using the data envelopment analysis (DEA). The Chinese government began its reforms of the banking industry reform since 1978. Our data set contains twelve banks in China during the period of 1996 to 2003. All nominal variables are transformed into real variables in the 2003 prices. There are twelve banks including four state-owned speciali...

During the last years, there was rapid development in the world port industry which is considered to have resulted from the increase of universal trade. The key to the development of each port is its adaptability to the earliest developments and its resistance to the increasing competition. The influence zones of each port are characterised by instability, while each port authority aims at the ...

Current climate variability is already imposing significant challenge to Ethiopia. Therefore, farmers have faced income variability in almost every production season. Problems associated with dependence on rain fed agriculture are common in Ethiopia. Smallholder farmers’ vulnerability from such income variability is also common. Over the years, a range of risk management strategies have been us...

Based on the panel data of 30 Chinese provinces from 2011-2019, entropy value method and Tobit regression model are applied to study impact logistics industry agglomeration green economic development. The results show that development shows a significant promotion effect; foreign direct investment, urbanization level population density have positive development; human capital government expendi...

Research on the impact of urbanization total factor carbon productivity is great significance to promote emission reductions and achieve sustainable development. Based panel data Central Asian countries from 1991 2019, SBM–Malmquist index model entropy method were used measure urbanization, respectively. The nonlinear regression, Tobit, quantile regression models empirically analyze in Asia. re...

This study analyzed the impact of state emergency declarations for COVID-19 on food consumption using consumer purchase history data. We performed a regression discontinuity design random effect Tobit model. The main finding is that both first and second increased budget share uncooked reduced eating out; however, significant increase in cooked was observed only after declaration. varied by fam...

The rapid development and widespread application of Internet has provided a platform for people to participate and discuss social hotspot events. In the meantime, emergency events have attained more attention and have been spread more quickly than they did ever before by this way. However, the public opinion on Internet usually exerts a heavy impact on the development of emergency events as wel...