在线评论的行为影响与价值应用研究综述

随着社交网络的发展,大量用户生成的在线评论影响着消费者的行为,同时被应用于企业的经营管理活动,引起市场营销、信息系统、产品开发等领域学者们的广泛关注,取得很大的研究进展。但是在线评论的研究范围广泛,目前并没有系统性的概念框架,缺乏对在线评论的全局认识。因此,本文尝试从行为影响和价值应用两个层面对在线评论研究文献进行全面总结,并结合当前的技术发展和市场环境,探讨在线评论研究的未来趋势。     

网红品牌的网络口碑大数据分析∗ ———以“奈雪的茶”为例

网红品牌的消费者评价形成用户生成内容(UGC),其衍生的网络口碑对网红品牌有极大的影 响。 以奶茶饮品中具有代表性的网红品牌“奈雪的茶”为例,利用八爪鱼数据采集器(v8. 0)爬取微博和 哔哩哔哩的 12 193 条有效文本评论,通过大数据分析,挖掘网络口碑的核心要素,探求网红产品对消费 者购买行为的影响。 研究发现,品牌和消费者是网红连锁店网络口碑的两大主题;结合问卷调查结果进 行对比验证表明,网络爬虫获取的消费行为数据能更准确地反映消费者内心真实情感。 研究结论显示, 产品品牌的口碑逐步从线下的口耳相传过渡到线上的网络传播;产品品质是网红品牌得以迅速爆红的根 本原因;网红品牌的市场增长驱动来源于年轻一代消费者;正面的网络口碑有助于提升网红品牌的美誉 度和知名度。     

个体身份与生命意义：肺癌网络社区的疾病叙事

文章通过对国内"医享网"癌症社区"肺癌圈"中33篇精华帖的叙事分析,探究其中生命故事的主体对自我身份的建构路径及其对生命价值的意义探寻,并尝试性地提出一些反思。研究发现,在自述和他述生命故事中,叙事者在信息寻求过程中改善自我印象,并运用"写作疗法""阅读疗法"和叙事隐喻理解疾病,帮助患者重塑自身角色。通过社群互动,患者形塑了对自身的身份认同,并形成了集体层面的生命价值观。从本研究的结论看,疾病叙事是癌症网络社区患者建构个体身份、形成身份认同的重要途径,叙事或可成为未来增进社会对癌症乃至其他疾病的理解、推进治疗与康复的可行之路。     

疫情防控期间高校线上教学的效果调查与分析

突发的疫情使得线上教学在所有高校全面铺开。为了了解这次“应急线上教学”的教学效果,上海理工大学教师发展中心对全校师生从线上教学的评价、线上线下教学体验对比、线上教学带给师生的改变等方面进行了线上教学效果的问卷调查。研究对专项调查的数据进行了深入分析,得出了线上与线下学习效果基本等效、线上线下教学各具优势、线上教学带来深刻改变的调查结果,提出了线上教学存在的主要问题,并给出了相应提升线上教学效果的建议。     

数字经济下虚拟集聚的现实基础与应用

虚拟集聚是数字经济的产业组织形态,是数字经济下资源重新配置的方式,已经渗入人们经济生活的各个方面,从集聚效应、新动能、新认识、新增长点等维度剖析虚拟集聚的现实基础,研究虚拟集聚对制造业的冲击及其在数字经济下的新应用。研究认为,网络空间的虚拟集聚是以“网”为基础、以“台”为依托、以“云”为支撑、以“端”为条件,虚拟集聚是集聚在数字经济下的演进,是在网络空间的集聚,具有智能物流、交易费用、空间范围、信息匹配、知识溢出、弱化黑洞、资源配置等集聚效应; 新一轮科技革命、产业变革与中国制造强国梦形成历史性交汇,促使虚拟集聚应运而生,并且成为新一代信息技术与制造业深度融合的新动能,能够显著促进产业数字化和数字产业化,带动传统产业集群转型升级,培育出世界级的先进制造业集群,推动中国制造迈向全球产业链价值链顶端; 虚拟集聚下制造业的关键核心是互联,在应用中需要产业数字化和数字产业化相辅相成,需要技术的支撑,表现为高度自动化、高度信息化和高度网络化,横向集成、纵向集成与端到端的集成,虚拟集聚的生产要素和生产力都是在虚拟空间体现,将推动制造业数字化转型、网络化协调、智能化变革; 随着新冠肺炎疫情全球蔓延,虚拟集聚成为新经济增长点,国际供应链中的虚拟集聚显著增长,跨境电商兴起,外贸行业快速数字化发展,教育行业、学术会议借助网络和软件线上进行,线上办公、云端会展快速流行,网络与快递业、餐饮与外卖业、短视频与直播经济、云医疗与大健康迅猛发展,数字阅读、文娱产业线上流行成为新的生活方式,元宇宙的虚拟世界也将推动科技发展带来经济新增长点。     

Modeling household fertility decisions with generalized Poisson regression

This paper models household fertility decisions by using a generalized Poisson regression model. Since the fertility data used in the paper exhibit under-dispersion, the generalized Poisson regression model has statistical advantages over both standard Poisson and negative binomial regression models, and is suitable for analysis of count data that exhibit either over-dispersion or under-dispersion. The model is estimated by the method of maximum likelihood. Approximate tests for the dispersion and goodness-of-fit measures for comparing alternative models are discussed. Based on observations from the Panel Study of Income Dynamics of 1989 interviewing year, the empirical results support the fertility hypothesis of Becker and Lewis (1973). Received January 7, 1997 /Accepted April 3, 1997     

Differences in white-nonwhite community mental health center service utilization patterns

Routinely collected computerized data were used to study the process of service delivery in terms of admission patterns, type and quantity of services rendered, and status at termination for whites and nonwhites in two community mental health centers. Social area analysis techniques were employed to control for socio-economic status, ethnicity and life style variables, and an epidemiologic model was used to analyze admission and service delivery rate differences. It was found that nonwhite admission rates were at least twice as great as white rates. Service delivery rates to the population at large were considerably greater for nonwhites than for whites. Delivery of direct services within the centers differed for whites and nonwhites, but no consistent trends emerged when types and amounts of services rendered were analyzed, controlling for sex, ethnicity, age, diagnosis and social area. Disruption of care indices were greater for nonwhites than for whites. Highlighted were some of the complexities involved in interpreting results of utilization studies.     

Artifact in client satisfaction assessment: experience in community mental health settings

Artifact in client satisfaction assessment is discussed and the results of a study of three factors thought to mediate client satisfaction ratings; (a) general life satisfaction, (b) mode of administration, and (c) psychological symptomatology, are reported. A standard client satisfaction questionnaire (CSQ) was modified to yield parallel forms and was administered orally and in writing to 92 clients in two mental health day treatment programs. Satisfaction ratings obtained from these clients were quite similar to out-patient ratings obtained in previous studies conducted in this setting and using the same measures. Oral administration of the CSQ produced 10% higher satisfaction ratings than written administration (p less than .05) and less missing data (p less than .01). Satisfaction ratings were also obtained using a simple graphic instrument. Graphic ratings were comparable to CSQ ratings. Satisfaction with life in general and level of psychiatric symptoms together accounted for 25% of CSQ variance. The implication of these findings for future client satisfaction research is discussed.     

空间OLAP 技术研究

针对决策支持系统中空间数据可视化应用趋势,研究基于空间数据仓库的一种决策分析 工具———在线分析处理,通过改进空间数据立方体的物化视图选择方法,并进行了实例分析, 验证该方法的有效性和优越性,更好地解决空间OLAP 响应时间延迟问题. 进而扩展空间OLAP 应用模型和模式,实现更加完备、灵活的空间OLAP 操作功能.