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Multidimensional research on the price linkage network of strategic metal minerals
WEI Hongyu, GAO Xiangyun, JI Tingyu, et al
Resources & Industries    2021, 23 (3): 102-111.   DOI: 10.13776/j.cnki.resourcesindustries.20210309.001
Abstract141)         PDF(mobile) (4167KB)(35)    Save

Strategic metal minerals of specific material functions are irreplaceable in new energy, information technology, national security and military industry. A price linkage effects may exist among different strategic metal minerals, which possibly alter the operating costs and competitiveness of high-tech industries. This paper, based on case study on ten metals, zirconium, chromium, cobalt, lithium, aluminum, nickel, antimony, copper, tungsten and tin, uses a complex network method to establish a multidimensional price linkage network according to the Granger causality test of the relationship between the mineral prices, the measurement of Euclidean distance, correlation coefficient and the linkage of ups and downs. The result shows the network is of good connectivity and agglomeration, suggesting their price changes alter each other promptly. A similarity in agglomeration coefficient exists in the multidimensional price linkage network although their analyzing perspectives are different. Tins price can directly influence the other metals, rapidly. The linked price changes of the other metals in the network are mostly based on chromium. A strong agglomeration exists in sub\|group of tin, copper, antimony and aluminum during the process of price linkage, of which tin and copper are more stable and strongest in agglomeration. 

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RESEARCH ADVANCES AND OUTLOOK OF STRATEGIC COBALT RESOURCE BASED ON REFERENCES STUDY
ZHAO Yiran, GAO Xiangyun
Resources & Industries    2020, 22 (1): 41-51.   DOI: 10.13776/j.cnki.resourcesindustries.20191018.006
Abstract165)      PDF(pc) (10847KB)(301)       Save
This paper uses quantitative references with English references in Web of Science and Chinese references in CNKI from 1988 to 2018 to study the cobalt resource research advance with results showing research on cobalt is still on-going globally from published quantities. China ranks the top in recent years. From organizations or cooperative organizations, Chinese Academy of Sciences is at the top but its influence needs to be improved. Domestic universities have a loose cooperation with no cooperative network formed. The most popular research domains, viewing from highly-frequent key words, lie in chemistry, physics or materials, marked by the topics on lithium ion battery performance, cobalt alloy and cobalt catalyzer.
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