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Yongteng Liu(Yongteng Liu),Haonan Zhang(Haonan Zhang) 동아시아무역학회 2022 Journal of East Asian Trade(JEAT) Vol.4 No.2
Purpose - Based on the PEST analysis method and 4V marketing theory, this paper points out the problems of product marketing strategy and puts forward some optimization strategies to help Xint Technology Co. At the same time, by helping enterprises to build ESG development strategies, promote regional green economy, provide references and suggestions for other similar enterprises, and help achieve the double carbon goal early. Design/Methodology/Approach - First of all, this paper uses the method of literature investigation, searches the authoritative data related to the research object and content through the Internet, and collects the relevant documents and research data. Secondly, based on the product marketing strategy of Xint Technology Co., Ltd., the existing product marketing strategy of Xint Technology Co., Ltd. is analyzed from four aspects: product differentiation, product functionalization, and brand promotion. Finally, the article investigates the product marketing situation and collects enough valuable first-hand information to study the existing problems of Xinte Technology Co., Ltd. Findings - In this paper, we find some problems, such as a lack of product differentiation, lack of product functionalization, low added value, and lack of brand propaganda. The best solution is found according to the marketing method. Research Implications - This paper takes Xint Technology Co., Ltd. as the research object and analyzes its macro environment, development, and problems in product marketing strategy. By using PEST analysis and 4V theory to analyze the macro-environment and product marketing strategy of Xint Technology Co., Ltd.. Finally, combined with the environment and development of the enterprise, it helps the enterprise to optimize its marketing strategy. The method of optimizing product structure and marketing strategy is put forward, which can provide a reference for the research of product marketing promotion and enterprise development path.
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Effect of naphthalene quinoline and H2S on DBT hydrodesulfurization over unsupported NiMoW catalyst
Changlong Yin,Haonan Zhang,Tongtong Wu,Zhuyan Wu,Kunpeng Li,Yan Kong,Chengwu Dong,Chenguang Liu 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.12
Unsupported catalysts have attracted much attention for high activity in comparison with the traditional supported catalyst. Meanwhile, the clear structure of unsupported catalysts is helpful for the recognition of active phase for conducting the industry production. The NiMoW unsupported catalyst was prepared by hydrothermal synthesis and characterized by BET, XRD and HRTEM. The effects of naphthalene, quinoline and H2S on the hydrodesulfurization reactivity of dibenzothiophene (DBT) were investigated in both a batch autoclave and a continuous 10 ml fixed bed micro-reactor over NiMoW and supported catalyst for comparison. The results showed that the hydrogenation reaction and the hydrogenolysis reaction occurred on different active sites. For supported catalyst, the inhibition was relatively weaker, and the inhibition of the hydrodesulfurization pathway was much higher than the direct desulfurization pathway. Although unsupported catalyst was very sensitive to quinoline and H2S in this experiment, the HDS ratio on the unsupported catalyst was maintained at a high level above 99.7%, which is attributed to the very high active site density of unsupported catalysts.
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Huang Jiandong,Li Hongmei,Yang Liguo,Zhao Haonan,Zhang Peng 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.4
In this paper, a novel discrete terminal integral sliding-mode backstepping control (DTISM-BSC) is proposed for the surface-mounted permanent magnet synchronous motor (SMPMSM) drive system, which improves the speed tracking performance and robustness of the system. In this control scheme, the discrete ultra-local model (ULM) of the SMPMSM drives, which employs the algebraic parameter identification technology to handle the unknown disturbance and parametric uncertainties, is first set up. Then, the terminal integral sliding-mode surface is proposed for its advantages of finite-time convergence to achieve speed rapid tracking, in which the control performance of backstepping control is improved. Thirdly, the equivalent control law is combined with the designed switching law to construct the speed controller based on the ULM. In this case, the bounded function is adopted to improve chattering problem. Meanwhile, the asymptotic stability and rapid convergence is verified. Finally, the experimental comparisons between the proposed method and the non-singular terminal sliding mode backstepping control (NTSM-BSC) are developed to validate the effectiveness of the proposed DTISM-BSC.
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