随着“耳朵经济”“声”气蓬勃地发展,无论是泛播客平台还是分众化播客平台都显示出巨大的发展潜力。泛播客与分众化播客“殊途同归”的成功背后暗含着的是二者不同的运营模式,分析二者不同运营模式或可为播客平台差异化竞争提供一些参...随着“耳朵经济”“声”气蓬勃地发展,无论是泛播客平台还是分众化播客平台都显示出巨大的发展潜力。泛播客与分众化播客“殊途同归”的成功背后暗含着的是二者不同的运营模式,分析二者不同运营模式或可为播客平台差异化竞争提供一些参考。本文藉此分别选取了喜马拉雅与蜻蜓FM作为泛播客与分众化播客的代表案例,分析其在内容运营模式、分发模式、盈利模式等方面的差异,并分析其共有困境与未来发展路径。With the vigorous development of “ear economy”, both general podcasting platforms and niche podcasting platforms have shown great potential for development. Behind the success of general podcasting and niche podcasting, different operation modes are implied, and analyzing the different operation modes of the two may provide some references for the differentiated competition of podcasting platforms. In this paper, Himalaya and Dragonfly FM are selected as the representative cases of pan-podcasting and niche podcasting to analyze their differences in content operation mode, distribution mode, profit model, etc., and analyze their common difficulties and future development paths.展开更多
Driven by practical applications, the achievement of distributed observers for nonlinear systems has emerged as a crucial advancement in recent years. However, existing theoretical advancements face certain limitation...Driven by practical applications, the achievement of distributed observers for nonlinear systems has emerged as a crucial advancement in recent years. However, existing theoretical advancements face certain limitations: They either fail to address more complex nonlinear phenomena, rely on hard-to-verify assumptions, or encounter difficulties in solving system parameters.Consequently, this paper aims to address these challenges by investigating distributed observers for nonlinear systems through the full-measured canonical form(FMCF), which is inspired by full-measured system(FMS) theory. To begin with, this study addresses the fact that the FMCF can only be obtained through the observable canonical form(OCF) in existing FMS theories.The paper demonstrates that a class of nonlinear systems can directly obtain FMCF through state space equations, independent of OCF. Also, a general method for solving FMCF in such systems is provided. Furthermore, based on the FMCF, A distributed observer is developed for nonlinear systems under two scenarios: Lipschitz conditions and open-loop bounded conditions.The paper establishes their asymptotic omniscience and demonstrates that the designed distributed observer in this study has fewer design parameters and is more convenient to construct than existing approaches. Finally, the effectiveness of the proposed methods is validated through simulation results on Van der Pol oscillators and microgrid systems.展开更多
文摘随着“耳朵经济”“声”气蓬勃地发展,无论是泛播客平台还是分众化播客平台都显示出巨大的发展潜力。泛播客与分众化播客“殊途同归”的成功背后暗含着的是二者不同的运营模式,分析二者不同运营模式或可为播客平台差异化竞争提供一些参考。本文藉此分别选取了喜马拉雅与蜻蜓FM作为泛播客与分众化播客的代表案例,分析其在内容运营模式、分发模式、盈利模式等方面的差异,并分析其共有困境与未来发展路径。With the vigorous development of “ear economy”, both general podcasting platforms and niche podcasting platforms have shown great potential for development. Behind the success of general podcasting and niche podcasting, different operation modes are implied, and analyzing the different operation modes of the two may provide some references for the differentiated competition of podcasting platforms. In this paper, Himalaya and Dragonfly FM are selected as the representative cases of pan-podcasting and niche podcasting to analyze their differences in content operation mode, distribution mode, profit model, etc., and analyze their common difficulties and future development paths.
基金supported by the National Natural Science Foundation of China(62133008,62303273,62188101,62373226,62473173)Young Taishan Scholars Program of Shandong Province of China(tsqn202408206)+2 种基金a Project of Shandong Province Higher Educational Youth and Innovation Talent Introduction and Education Programthe Natural Science Foundation of Shandong Province,China(ZR2023QF072)China Postdoctoral Science Foundation(2022M721932)
文摘Driven by practical applications, the achievement of distributed observers for nonlinear systems has emerged as a crucial advancement in recent years. However, existing theoretical advancements face certain limitations: They either fail to address more complex nonlinear phenomena, rely on hard-to-verify assumptions, or encounter difficulties in solving system parameters.Consequently, this paper aims to address these challenges by investigating distributed observers for nonlinear systems through the full-measured canonical form(FMCF), which is inspired by full-measured system(FMS) theory. To begin with, this study addresses the fact that the FMCF can only be obtained through the observable canonical form(OCF) in existing FMS theories.The paper demonstrates that a class of nonlinear systems can directly obtain FMCF through state space equations, independent of OCF. Also, a general method for solving FMCF in such systems is provided. Furthermore, based on the FMCF, A distributed observer is developed for nonlinear systems under two scenarios: Lipschitz conditions and open-loop bounded conditions.The paper establishes their asymptotic omniscience and demonstrates that the designed distributed observer in this study has fewer design parameters and is more convenient to construct than existing approaches. Finally, the effectiveness of the proposed methods is validated through simulation results on Van der Pol oscillators and microgrid systems.
