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Li Zhuang - One of the best experts on this subject based on the ideXlab platform.

Teng Guo Ku - One of the best experts on this subject based on the ideXlab platform.

Zhang Kun - One of the best experts on this subject based on the ideXlab platform.

Weiwei Xiong - One of the best experts on this subject based on the ideXlab platform.

  • research on diversity of mineral resources carrying capacity in chinese mining cities
    Resources Policy, 2016
    Co-Authors: Ran Wang, Jinhua Cheng, Yali Zhu, Weiwei Xiong
    Abstract:

    From four dimensions of economy, society, potential and environment, we select seven indicators including economy scale, contribution to GDP and employment, Guarantee Period, the discharge of industrial waste water, sulfur dioxide and smoke dust to build the evaluation index system of Mineral Resources Carrying Capacity (MRCC). Then index system evaluation method is used to evaluate the diversity of MRCC in Chinese mining cities selected from the National resources city sustainable development planning (2013–2020). The final result shows that: ① MRCC is stronger in the central, western mining cities and growing mining cities which have great potential for mining industry.② Mature and growing mining cities exhibit stable or good mining economy, which have higher contribution to GDP and employment; with good economic transformation, regenerating mining cities have higher economy scale and longer Guarantee Period; the environmental pollution is much more serious in growing mining cities.③ The coordination between mineral resources exploitation and environment need to be improved urgently in many mining cities, especially the western and the growing ones. Thus this paper suggests focusing on improving the contribution to GDP in growing and regenerating mining cities, ameliorating the reemployment in the central, western and recession mining cities, extending the Guarantee Period of mineral resources in declining mining cities, coordinating mineral resources exploitaion and environment in western and growing mining cities.

Maaa Colin M. Ramsay Asa - One of the best experts on this subject based on the ideXlab platform.

  • Determining the Optimum Guarantee Period for a One-Life Retirement Annuity
    North American Actuarial Journal, 2007
    Co-Authors: Gopi Shah Goda Fsa, Maaa Colin M. Ramsay Asa
    Abstract:

    Abstract We consider a risk averse retiree from a defined contribution plan who decides to purchase a onelife annuity with a Guarantee Period. Given the retiree has a bequest motive, we focus on the problem of determining the optimum length of the Guarantee Period. Assuming the retiree’s bequest function is proportional to his or her utility function, we determine necessary and/or sufficient conditions under which the retiree would choose an annuity with (i) no Guarantee Period, (ii) the maximum Guarantee Period, or (iii) an intermediate Guarantee Period.