Subjects: Management Science >> Other Disciplines of Management Science submitted time 2023-08-23 Cooperative journals: 《中国科学院院刊》
Abstract： In the era of multi-source heterogeneous big data, big data presents new features such as cross, diversity and variability. The applications of big data in a wider range of fields have new requirements for data fusion. Under this background, the connotation of data fusion is enriched and expanded. The generalized data fusion includes the fusion of data resources, the fusion of model methods, and the fusion of decision-makers’ knowledge and experience. This study analyzes the characteristics of multi-source heterogeneous data fusion at three different fusion levels: data level, information level and decision level, and discusses challenges for data fusion in storage, application and analysis technology, data management as well as value determination. What’s more, corresponding suggestions are putted forward, which benefit for enterprises, government and other entities to effectively manage data resources and provide reference for more in-depth data fusion analysis.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The digital economy has become a significant force in reorganizing global factor resources, reshaping global economic structure and global competitive landscape. This article first starts with the basic issues of digital economy, outlines three key components of digital economy, which are big data, intelligent algorithms and computing platforms. Then it reviews the development of international digital economies and the current status of China’s digital economy, and summarizes the advantages and challenges of developing a digital economy in China. Finally, based on the “14th Five-Year Plan for National Economic and Social Development and the Long-Range Objectives Through the Year 2035”, according to challenges and shortcomings of China’s development of digital economy, six suggestions of policies to promote, optimize and strengthen China’s digital economy have been proposed, including data openness and protection, issues of key technologies, training programs for big data talents, livelihood services for citizens, social credit system and international collaborations.
Subjects: Biology >> Zoology submitted time 2018-12-25 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在研究汽爆及汽爆后发酵对棉花秸秆营养价值的影响。试验分别将棉花秸秆未处理（对照组）、粉碎（S组）、汽爆（SE组）、汽爆后发酵（SEF组），采用多点采样和四分法收集样品，检测棉花秸秆的总能（GE）、粗蛋白质（CP）、粗脂肪（EE）、中性洗涤纤维（NDF）、酸性洗涤纤维（ADF）、木质素（ADL）、灰分（Ash）、钙（Ca）、磷（P）以及游离棉酚（FG）含量，并通过计算粗饲料分级指数（GI），综合评价不同处理对棉花秸秆营养价值的影响。结果表明：1）SE组和SEF组棉花秸秆CP含量较S组提高分别了10.79%和14.60%（P0.05）。综上所述，汽爆与汽爆后发酵处理可改善棉花秸秆的营养价值，降低棉花秸秆ADL和FG含量，其中汽爆后发酵的效果最好。
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