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Copyright of China Media Report Overseas is the property of Edmondson Intercultural Enterprises and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of International Chinese Teaching is the property of Beijing Language & Culture University Press Co. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

With the information retrieved from CNKI database and the strength of Python programming language, SPSS and CiteSpace analysis tools, this study performs a visualized analysis on the keywords of frequently cited periodicals published from 2000 to 2020. By adopting hierarchical clustering, internal structure and strategic coordinate positioning methods, it carried out a review and development trend analysis on the research hotspot framework of rural China in the recent 20 years. Last but not least, it highlights an urgent problem in rural area research under the new circumstances, aiming to provide fr esh thinking for future research on rural areas. [ABSTRACT FROM AUTHOR]

Dike-pond was a special land use type and played an important role in the land use pattern of Pearl River Delta. This paper took Dike-pond as the research object, Nanhai District of Foshan City as the research area, introduced the Niche-fitness model into the quality evaluation of Dike-pond, and constructed the Niche-fitness evaluation index system of Dike-pond utilization from three dimensions: Natural quality, social and economic, spatial form. Then it used the means of Hibbert space, weighted average, limiting factor and weighted summation models to calculate the Niche-fitness in different dimensions, divide the fitness level, and analyze Dike-pond utilization quality and its distribution characteristics. The results showed: 1) From the natural quality dimension, Dike-pond was dominated by relatively high and middling fitness, and the distribution was high in the south and low in the north. The areas of high and relatively high fitness were 3 266.04 and 7 130.09 hm2, respectively, which were concentrated in Jiujiang, Xiqiao and Danzao of the southwestern part. The area of middling fitness was 5 622.52 hm2, mainly distributed in Xiqiao, Danzao and Shishan. And the low fitness of Dike-pond was the most in Jiujiang, Shishan and Danzao. 2) From the social and economic dimension, Dike-pond was dominated by middling and relatively high fitness, and the overall level was relatively low. The areas of middling and relatively high fitness were 6 373.32 and 5 596.50 hm2, which were concentrated in the southwestern part; The high fitness was the most in Jiujiang and Shishan, the low fitness was the most in Danzao and Xiqiao. 3) From the spatial form dimension, the Niche fitness was generally higher, and the distribution was high in the south and low in the north. The area of high fitness was 9494.36 hm2, mostly distributed in the southwestern part; The area of relatively high fitness was 2942.02 hm2, which was evenly distributed in the southwest and the north; The middling fitness was the most in Shishan, the low fitness was the most in Shishan and Lishui. 4) The Niche fitness level of Dike-pond in Nanhai District was generally high, and high fitness was the main type, the distribution was high in the south and low in the north. The area of high fitness was 9 494.36 hm2, accounting for 53.96% of the total Dike-pond area, concentrating in Xiqiao, Jiujiang and Danzao, and also the cradle of traditional Dike-pond in Pearl River Delta. The area of relatively high fitness was 3 301.35 hm2, distributed in the southwest and the north; the area of middling fitness was 3 274.72 hm2, with the largest number of Shishan; The low fitness was 1 406.43 hm2, the northern part was the most. It was an effective way to improve the Niche fitness level of Dike-pond by protective development measure, using the segmentation, increasing the intensity of remediation, improving the ecological environment. [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Facing with more and more complex embedded application requirements and urgent problems of the current embedded operating system research areas, such as reconstruction，transplantation，maintenance，trusted，multi-core，many-core and so on，this paper proposed an embedded multitask operating systemarchitecture，whichpresented better scalability，trans-plantation，streamlined and efficient by exploring the key technologies of embedded operating system based on Forth virtual machine technology. The architecture implemented code sharing and multitask managing，by using the methods of classification storage mapping，Forth vector defnition and user variable separation. The experiment results demonstrate that the embedded operating system architecture based on Forth virtual machinetakes advantage of the inherent characteristics of thesystem reduces the resources consumption，and improves system flexibility and operational efficiency. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Guangdong University of Technology is the property of Journal of Guangdong University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

After the outbreak of the Pacific War, and especially in the early Cold War period, the U.S. federal government, three major private foundations, and a considerable number of scholars came to realize that in-depth understanding of the non-Western world was very important for American national security, and proceeded to jointly promote Area Studies. The operation of this three-dimensional structure of the federal government, private foundations and scholars is complex. On one hand, it met the state’s need for experts and knowledge in Area Studies and also provided favorable conditions for researchers to affect U.S. policy towards the non-Western world. On the other hand, it made Area Studies a distinguished school, as well as a henchman of politics to a large extent. In terms of the close relationship between the rise of U.S. Area Studies and national security concerns, politics leave little room for academic independence, yet not every scholar wishes to remain distant from politics. Thus it can be said that academia can rarely be completely separated from politics. [ABSTRACT FROM AUTHOR]