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2. Dilemma and Countermeasures of Antitrust Regulation in the Field of Internet Platform Economy

Author

Guo Xiaoling

Subjects
internet platform economy, monopoly genesis, antitrust regulation, evolutionary game theory, 65y04, Mathematics, QA1-939
Abstract

This study addresses the issue of monopolies in the Internet platform economy by analyzing their causes and evaluating effective antitrust measures to maintain market fairness and encourage economic prosperity. Focusing on monopoly dynamics, including the network effect, capital influence, and market dominance, we apply evolutionary game theory and empirical analyses to devise a game theoretical model. This model helps simulate monopoly evolution and the potency of antitrust strategies. Our findings illustrate a direct correlation between monopoly growth and factors such as user base size, capital consolidation, and market control, with platforms frequently adopting monopolistic tactics for revenue maximization. Following antitrust regulatory actions, industry concentration shows a notable decrease, with metrics of total assets and net sales concentration dropping by 0.059 and 0.069, respectively. The study outlines critical regulatory strategies for enhancing market regulation, competition facilitation, and encouraging innovation. Effective antitrust enforcement is vital for optimizing market structures, spurring industry innovation, ensuring consumer welfare, and supporting the healthy progression of the Internet platform economy.

Published
2024
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3. RANDOM FORCE MODELING AND VIBRATION ANALYSIS OF FIXED ABRASIVE WIRE SAW

Author

JI LeiLei, TANG AoFei, GUO XiaoLing, and CUI FangYuan

Subjects
Wire saw cutting, Wire saw vibration, Random force modeling, Slicing experiment, Mechanical engineering and machinery, TJ1-1570, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

The main approach to cut the brittle-hard material is the use of the fixed abrasive wire saw at present. The vibration of the wire saw is inevitable during the cutting process for the reason of its flexibility. The main vibration patterns include the incentive of abrasive grains to the wire saw and vibrations transmitted by the machine itself. For the sake of investigating the effect of abrasive grains on the vibration of wire saws during cutting process, based on the oscillation theory of the string, the vibration equations of the wire saw in the case of a damped axially uniform motion were constructed and together with an analysis of the force in the wire saw during the process of cutting. The normal random force model, which has an important influence on the lateral vibration of the wire saw,was further established and an analysis of linear vibration of the wire saw in the small offset state was conducted. Based on the cutting experiment of WXD170 reciprocating diamond wire sawing machine, the validity of the normal random force model is verified. The results show that the simulation of the vibration model can accurately predict the vibration during the sawing process.

Published
2019
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