Inference for von mises mixture in mean direction and concentration parameters 相应的协方差阵及有关参数的一致最小风险无偏
2.
Iv the mean direction and mission of strategic adjustment and evolution of rural industrial structure of heilongjiang province . v the basic principle and countermeasure of strategic adjustment and evolution of rural industrial structure of heilongjiang province . postgraduate : wang xiaodan major : agricultural economy administration supervisor : prof . guo xiangyu 提出了应以稳定发展第一产业，重点发展以乡镇企业为主体的二、三产业、建立各业内部自我调节功能较强的平衡发展的结构系统作为黑龙江省农村产业结构战略性调整与优化的主要方向和任务。
