共查询到19条相似文献,搜索用时 125 毫秒
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以岳阳市南津港污水处理厂为例,探讨鼓风曝气工艺中的风机选型问题,对罗茨风机和单级高速离心风机的原理及特点加以分析和经济比较,并得出了风机选型结论. 相似文献
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在冬季利用离心风机和轴流风机进行机械通风降温,在达到相同效果的情况下,分别选择不同的通风方式,比较其单位能耗,看哪种方式更加节约能耗和费用。 相似文献
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本文主要是讲述噪声是评价空调性能的一项重要指标;噪声的大小直接影响空调的品质;风机产生的噪声也是空调的主要噪声来源.柜式空调送风系统所用风机通常为多翼离心风机.通过熟悉离心风机的工作原理,深入了解噪声、风机噪声的基本概念,得出离心风机噪声控制的一些方法. 相似文献
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为解决高温卤煮类食品加工车间员工体感舒适度极低、车间环境温湿度偏高的问题,经反复研究高温卤煮类食品加工车间生产环境,对相关参数进行计算,结合高温卤煮类食品加工车间复杂的环境情况,合理处理气流组织、提高气流的流通性能够改善高温卤煮类食品加工车间的环境。本文通过对送排风系统进行优化设计,合理布置混流风机、离心风机和工业吊扇等多种送排风设备,形成合理的气流组织,使车间气流有序流通,以达到除湿降温的目的,显著改善车间环境。 相似文献
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离心风机喘振现象的分析与控制 总被引:1,自引:0,他引:1
喘振现象虽然是离心风机的固有特性,但通过调整、维护以及在设备选型时充分考虑,喘振是完全能够预防和控制的,本篇详细的介绍了离心风机的喘振现象、产生原因及在设备采购、安装及日常维护时的预防方法及控制措施。 相似文献
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Social media platforms have become crucial in helping brands build their marketing activities. We investigate the effect of interactivity of brands' marketing activities on Facebook fan pages on continuous participation (i.e., commenting and sharing) intentions. The S–O-R (stimulus-organism-response) framework is used to examine consumers' psychological states (perceived brand fan page experience and attachment) and subsequent behavioral responses (continuous participation intentions) after being stimulated (social media marketing activity interactivity). Using an online questionnaire, this study surveyed the top 15 brands' Facebook fan page users worldwide. We obtained 216 valid responses and used partial least squares structural equation modeling (PLS-SEM) to analyze the data. Results show that the more interactive a brand's marketing activities are on its Facebook fan page, the higher the perceived experience. In addition, perceived experience positively affects brand fan page attachment. Perceived experience and brand fan page attachment positively affect continuous participation intentions. Perceived experience partially mediated the relationship between interactivity and continuous participation intentions. Brand fan page attachment also partially mediated the relationship between perceived experience and continuous participation intentions. 相似文献
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AbstractThe purpose of this paper is to develop detailed insight into loyalty among football fans of Hibernian FC, moving beyond typologies to a more socially grounded approach. Issues explored include patterns of consumption, distinctions between fan groups, and antecedents of loyalty. The origins and development of the club are evaluated, and consumer fanaticism, football fan loyalty, consumption behaviour, and the sociological impact of fan communities are discussed. Data were collected using a variety of methods, including participant observation, in-depth interviews, and analysis of websites and fan forums. Key findings relate to the impact of family and community influences on loyalty, initial experiences of developing associations with the club, through to the impact of socialisation, and the lived experience of being a supporter. A supporter matrix is constructed as a portrayal of the loyalty found at the club. A range of theoretical implications is considered, and the matrix promoted as a tool for understanding loyalty in clubs with similar social structures and community connections. 相似文献
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Lisette de Vries Sonja Gensler Peter S.H. Leeflang 《Journal of Interactive Marketing》2012,26(2):83-91
Social media outlets constitute excellent vehicles for fostering relationships with customers. One specific way to do this is to create brand fan pages on social networking sites. Companies can place brand posts (containing videos, messages, quizzes, information, and other material) on these brand fan pages. Customers can become fans of these brand fan pages, and subsequently indicate that they like the brand post or comment on it. This liking and commenting on brand posts reflects brand post popularity. In this article, we determine possible drivers for brand post popularity. We analyze 355 brand posts from 11 international brands spread across six product categories.Results show that positioning the brand post on top of the brand fan page enhances brand post popularity. But the findings also indicate that different drivers influence the number of likes and the number of comments. Namely, vivid and interactive brand post characteristics enhance the number of likes. Moreover, the share of positive comments on a brand post is positively related to the number of likes. The number of comments can be enhanced by the interactive brand post characteristic, a question. The shares of both positive and negative comments are positively related to the number of comments. Managers of brands that operate brand fan pages can be guided by our research with regards to deciding which characteristics or content to place at brand posts. 相似文献
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Shari S.C. Shang Hsiao-Ting Tseng Jen Jen Jiang Chieh-Jen Chiang 《Journal of Organizational Computing & Electronic Commerce》2018,28(3):252-268
Most major enterprises have invested in social networking to provide services, promote products, or communicate with customers. However, to date, no clear understanding on the effects of social networks on business performance has emerged. This study examines the relationship between the capability of the enterprise to manage social networks and the resultant benefits of their investing in the social network. A fan page on Facebook is the selected target of study. By analyzing the effort required to manage a fan page, we measured the fan-page managing capability by its number of fans. Then, we proposed six hypotheses for empirical examination of the causal relationship between enterprises’ social network managing capability and business benefits. The study applied two-stage data collection and testing. The first stage is to build a general understanding of the relationship between the number of fans and business revenue. Based on findings of the first stage, the study tested the hypotheses on selected global firms and sought patterns of benefits generated from the fan page. This study builds deep understanding from various aspects about fan-page effects on enterprises, and proposes that firms that provide products and services with characteristics of low-product price, short-product durability, and low-customer involvement are empirically influenced by the management of their fan pages. 相似文献
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缓式通风由于能耗低,水分减量少,在降温方面比离心式通风存在许多优势,但在通风结构设计上还存在许多不足,结构设计的合理性直接影响着通风效率和能耗水平,而在这方面却没有成型的标准,结构设计方面的探索对缓式通风的发展具有重要实际意义。通过对轴流风机位置以及相互影响的测试,显示了轴流风机对一个空间的通风不同于离心式风道式通风。同时利用大气绝对压力计在粮面上对粮面上空间负压压力分布进行了测试,为缓式通风实仓压力测试找到了有效手段,为所有负压式通风找到了应用测试的方法,为科学合理地使用轴流风机作了有益探索。 相似文献
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There is limited research showing how strategically generated content can boost Twitter engagement. The problem is acute for sports clubs with large fan bases. We determine the ideal content generation strategy using Hofstede's Cultural Dimensions and Language Expectancy theory. This study examines whether culturally aligned tweets can improve fan engagement. Using tweets from a sports league, we demonstrate that culturally aligned features may be used to build machine learning and deep learning models that predict a tweet's engagement level. According to our research, culture-specific social media content that meet fans' language expectations can increase Twitter engagement. 相似文献