供应链例外事件管理系统

对供应链系统的管理,关键在于对例外事件的及时处理,以确保系统的正常运作。为迅速发现供应链系统中的例外事件并协同处理,达到快速响应、提高竞争力的目的,提出了供应链例外管理系统。该系统将供应链管理的焦点集中到对一组流程关键节点的例外控制上,以量化的性能指标为基础来构建一套信息、过程与人的集成框架和一套可配置、可扩展的软件架构,并通过一个例外管理的流程实例展示了系统在实际中的应用。

Population genetic structure of the Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis): Implications for management and conservation

Understanding the population genetic structure is a prerequisite for conservation of a species. The degree of genetic variability characteristic of the mitochondrial DNA control region has been widely exploited in studies of population genetic structure and can be useful in identifying meaningful population subdivisions. To estimate the genetic profile of the Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis), an endangered freshwater population endemic to China, the complete mtDNA control region was examined in 39 individuals belonging to seven different stocks inhabiting the middle and lower reaches of the Yangtze River. Very low genetic diversity was found (nucleotide diversity 0.0011 +/- 0.0002 and haplotypic diversity 0.65 +/- 0.05). The mtDNA genetic pattern of the Yangtze population appears to indicate a founder event in its evolutionary history and to support the marine origin for this population. Analyses by F-st and Phi(st) yielded statistically significant population genetic structure (F-st = 0.44, P < 0.05; phi(st) = 0.36, P < 0.05). These results may have significant implications for the management and conservation of the Yangtze finless porpoise in the future.