Driven by digitalization and consumption upgrades, consumers who are keen on mobile shopping continue to increase their demand for leisure food, which are becoming more personalized and diversified. The study selects three squirrels in e-commerce enterprises as the case study objects, comprehensively uses the qualitative analysis method based on Python and Nvivo, and the questionnaire survey method based on SPSS, etc., to analyze their marketing environment and current situation under the mobile Internet, and points out their marketing strategy problems and solutions. The countermeasures are expected to provide reference for the improvement of the marketing strategy of the three squirrels and the healthy development of the leisure food industry.
China's property services industry has experienced more than 40 years of development since 1981, and the issue of human resources is one of the most important issues for companies to improve their service quality as well as their service brand. However, in recent years, the loss of grassroots staff in property companies has been a serious problem, constantly weakening the competitiveness of the companies. This paper takes a property company as the research object and analyses the problem of massive staff turnover at the grassroots level of the target company by means of questionnaires and interview methods. The results show that the sense of belonging and job satisfaction of the grass-roots employees of Enterprises X are both at a low level. In response to this problem, this paper proposes countermeasures in four areas. This paper is of great relevance to the optimisation of human resources in Enterprises X and the improvement of employee satisfaction as well as the human resource management and sustainable development of the property company.
In order to cope with the energy crisis and improve energy efficiency, the use of organic Rankine cycle (ORC) to convert low-quality heat energy into electricity and use it is an effective method. Based on the ORC waste heat recovery system of vehicle engine, this paper explores the flow heat transfer and deformation law of the core component scroll expander under different tooth head corrections. Deformation has a significant impact on the performance of the expander. In this study, several flow-thermal-solid coupling models based on double circular arc correction and double circular arc plus straight-line correction are established. The effects of tooth head correction on the strength and stiffness of tooth head, flow field distribution of suction chamber and deformation characteristics of tooth head are studied. Finally, the deformation law of scroll tooth head with different correction angles was discussed. The results show that the EA-SAL correction makes the wall curvature of the tooth head change greatly, and the flow field in the center of the tooth head becomes more uneven and complicated. The tooth head area under EA-SAL modification is larger, and the tooth head strength and stiffness are improved by about 6%. Within a certain angle range, the tooth head deformation after EA-SAL correction is slightly larger than that after PMP correction, but the difference between them decreases and even reverses with the increase of angle. The maximum deformation of the EA-SAL modified tooth head under internal pressure is about 20% smaller than that of PMP. With a given initial correction angle ∅, the deformation of the corrected tooth head caused by a pressure or temperature load reduces when the correction angle γ is reduced, Therefore, reducing the correction angle properly is helpful to reduce the deformation of the tooth head.
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