Research casts doubt on independent ancestral origin of cultivated rice

CAS botanists have made novel progress on studies of origin and domestication of the Asian cultivated rice Oryza sativa. Their work was published in the June issue of Genetics.     

Research casts doubt on independen ancestral origin of cultivated rice

CAS botanists have made novel progress on studies of origin and domestication of the Asian cultivated rice Oryza sativa. Their work was published in the June issue of Genetics.     

数字保存系统中数字资源保存质量标准框架

数字保存系统的基本价值在于提供用户可信任的数字资源存取能力,实现该价值的最有效方法是制定质量保证标准,并按规范程序对其认证。数字资源保存质量标准是整个数字保存系统质量保证标准体系的有机组成部分。首先论述了数字资源保存质量标准在整个数字保存系统质量保证标准体系中的地位与作用,然后创建了数字保存系统中数字资源保存质量标准框架结构体系的三个模块——AIP质量标准框架、表征信息质量标准框架和保存策略质量标准框架,并全面阐述了各模块的基本内容。     

数字资源长期保存探讨

介绍了数字资源长期保存的方式和国外数字资源长期保存项目研究的动向．探讨了我国当前数字资源长期保存亟待解决的问题。