排序方式: 共有74条查询结果,搜索用时 0 毫秒
71.
情报学的新发展与未来趋势 总被引:1,自引:0,他引:1
刘红 《科技情报开发与经济》2007,17(2):88-90
概括了情报学产生的根源与作用,从情报学发展的5个阶段探讨了情报学在我国的发展情况,并对情报学未来的发展趋势进行了展望。 相似文献
72.
社会计算与数字网络化社会的动态分析 总被引:5,自引:0,他引:5
王飞跃 《科技导报(北京)》2005,23(9):4-6
许多研究动向表明,社会计算已成为继科学计算、生物生命计算之后新的国际前沿研究和应用的焦点与方向。我们认为,以认知科学、智能科学和复杂性科学为基础,开展社会计算及其在数字网络化社会状态与趋势的动态分析中的应用,已成为确保国家的安全、和谐社会的建设和科学发展观的落实所刻不容缓的任务。 相似文献
73.
《Mendeleev Communications》2021,31(6):769-780
The synthesis of the desired chemical compound is the main task of synthetic organic chemistry. The predictions of reaction conditions and some important quantitative characteristics of chemical reactions as yield and reaction rate can substantially help in the development of optimal synthetic routes and assessment of synthesis cost. Theoretical assessment of these parameters can be performed with the help of modern machine-learning approaches, which use available experimental data to develop predictive models called quantitative or qualitative structure–reactivity relationship (QSRR) modelling. In the article, we review the state-of-the-art in the QSRR area and give our opinion on emerging trends in this field. 相似文献
74.
《Macromolecular theory and simulations》2017,26(2)
This paper proposes a new and systematic approach for optimum design of thermosetting resin systems based on molecular‐dynamics simulations. Specifically, the results of simulations for chemical reaction (cross‐linking) and mechanical properties of epoxy resin are clustered with a self‐organizing map (SOM) that enables to comprehensibly visualize the characteristics of complex structured polymers. Moreover, the scatter‐plot matrix (SPM) is introduced to analyze the specific data. Thus, SOM is used to find common features in a molecular structure, and SPM helps to clarify molecular‐scale mechanism in the clusterization. Through the analysis, the authors find that base resins with multireactive functional groups contribute to superior mechanical properties, and these properties stem from the hydrogen‐bond network distributed throughout the system. The approach, which is thought to be one of chemical informatics, has broad ranges of applications that are not limited to epoxy resin but can be applied to any kind of thermosetting resins.