基于模糊层次分析法的农产品供应链脆性源评价

在介绍农产品供应链及其脆弱性内涵的基础上,构建了以内部因素、外部因素为准则层,以农产品供应链本身复杂性、农产品供应链自身的特性、农产品供应链的控制过程及流通过程、消费者需求及产品生命周期及形式多样化、自然环境、经济及社会环境为因素层的脆性源层次结构模型。通过搜集专家打分表,综合模糊层次分析法进行较为严谨的运算,利用单层次排序和总排序得出最低层脆性源对农产品供应链脆弱性总目标的影响权重排序。最后针对农产品供应链脆弱性关键因素提出对策建议。     

验证大气预测模式的实用性

在对鹿泉市市区内的污染源进行调查的基础上，总结出污染物的排放源强。根据全市的气象资料和混合层高度，利用两种方法对鹿泉市市区的污染因子二氧化硫的长期浓度进行估算，并把计算浓度和常规监测浓度进行比较，做误差分析，最后讨论了两种计算方法的特点及在鹿泉市大气环境预测中的实用性     

Influencers' “organic” persuasion through electronic word of mouth: A case of sincerity over brains and beauty

Despite the growing importance of influencers' word-of-mouth through audiovisual content, little is known about its effect on consumers' brand evaluation, purchase intentions, and decisions. Drawing on Ohanian's source credibility framework, we conducted two studies across different influencers, product categories, and respondents' gender and tested the hypotheses using covariance-based and partial least square structural equation modeling. Study 1 focuses on a mega-influencer of cosmetic and beauty brands and predominantly involves female respondents. The findings show that the influencer's attractiveness affects perceptions about source expertise and source trustworthiness but not brand attitude, while source expertise predicts source trustworthiness, and both mediate the effect of source attractiveness on brand attitude. In contrast, brand attitude predicts purchase intention and mediates the impact of source credibility dimensions. Study 2 focuses on various influencers of hedonic products (lifestyle, fashion, and beauty). The results confirm the influence of source attractiveness and expertise on source trustworthiness, which ultimately predicts consumer purchase decisions. This study reveals the interdependencies between different source constructs, contributing to source credibility theory. Furthermore, we show that the effect of source dimensions that are relevant in the celebrity endorsement literature, such as source attractiveness, do not directly influence consumers' intentions and decisions in the context of influencers' electronic word of mouth. Finally, the two studies confirm that only influencers perceived as honest and sincere can influence consumers' purchase decisions.     

Ostracizing sources avoid communal tastes: Effect of ostracizing behaviour on extraordinary consumption

Although people often exclude others in their daily encounters and social media interactions, no consumer research on ostracism has solely focused on sources of ostracism. We argue that the influence of ostracism on evasive behaviour is worth investigating since the scant academic investigations on sources are limited to their reparation intentions for their harmful behaviour. Three experiments were conducted to examine the influence of ostracizing behaviour (vs. neutral vs. social interaction) on extraordinary consumption in face-to-face and social media contexts. It was uncovered that sources sense dissonant feelings in dissimilar contexts when their behaviour transcends society's normative boundaries and, hence, prefer consumption that does not commonly appear in society as a means to evade this dissonance. The effect was moderated by sources' justification of their behaviour. We initiate consumer research on sources of ostracism and contribute to the marketing practice of introducing extraordinary consumption options by investigating the psychological consequences of ostracizing behaviour.     

海上稠油热采锅炉补给水系统水源选择的思考

渤海L油田为一座已投产的超稠油热采开发井口平台，锅炉水处理系统由于水源不合格出现运行问题。根据平台的运行情况，详细分析水源水质产生问题的原因；结合该平台锅炉水处理系统的前期水源选择背景、运行过程中各处理单元参数和实际运行出现的问题进行分析,对海水和水源井水两种水源进行技术、投资、占地、风险性等方面的对比，给出水源推荐方案，为更加科学地在海上稠油热采项目中选择锅炉补给水水源提供技术支持。     

采用开环模式实现深空动态模拟源设计

由于深空探测的作用距离十分遥远,最大测控距离能达到几百万公里,信号的传播时延大,因而给深空动态模拟源的设计带来了一些技术难点.针对这些难点,在结合运动方程的基础上提出了采用开环模式实现动态模拟源的设计方案.通过分析可知,该方案具有电路简单、节约成本的特点,易于在工程中实现.     

岳阳市农业面源污染测算与控制对策

探究岳阳市农业面源污染情况，对岳阳市土地利用、畜禽养殖及农村生活污染的总氮、总磷污染物排放状况进行测算分析，为岳阳市农业面源污染防控提供科学依据。以岳阳市2011—2019年农业面源数据为基础，运用输出系数模型法，计算岳阳市土地利用、畜禽养殖及农村生活污染的总氮、总磷污染物负荷量，分析农业面源氮、磷污染的变化特征。结果表明：2010—2019年，岳阳市总氮、总磷污染物负荷量呈现“减少-增加-减少”趋势，但总氮负荷量始终大于总磷负荷量；主要污染源为畜禽养殖，水田污染与农村生活污染次之，旱地与林业排放污染最少，但水田的污染逐年增加。基于此，针对岳阳市农业面源污染提出相关对策，包括采取科学种植与化肥农药减量，发展绿色农业，优化养殖业结构与模式，建立农业面源污染防控治理体系，以促进岳阳市农业生态绿色发展。     

江水源热泵技术在黄浦江建筑群中的应用研究

江水源热泵技术需要以江水为载体，在综合评价了黄浦江水水质的基础上，得出了该技术在上海地区的可行性。把江水源热泵系统与冰蓄冷技术相结合，使其比传统的冷却塔方式更节能环保。在工程中采用了综合能效测评法，计算出制冷系统COP和制热系统COP系数，使节能量值得信服。     

Social media influencers and consumer engagement: A review and future research agenda

The rise of social media influencers (SMIs) in the recent decade garnered wide interest from academicians and marketers. Academicians try to understand the effect of influencers on consumer behaviour, while marketers use influencers as part of their strategy to achieve marketing objectives. Although, plenty of practical and conceptual research is available in this area, literature reviews in the domain of SMIs and consumer engagement are scarce as it is still developing, and most of the studies have focused on these two concepts separately. In this study, the authors attempted to combine and understand how social media influencers affect consumers engagement. This systematic review of the literature offers a comprehensive view of previous research on social media influencers and consumer engagement. The study reviewed articles published in the Australian Business Deans Council (ABDC), Scopus, and Web of Science indexed journals till 5 June 2021. To understand consumers' engagement with SMIs, authors identified and theorized the antecedents, decision and outcome of such engagement. It also discusses the influencer-follower parasocial relationship on different social media platforms. The study proposes an integrated conceptual framework that can be further used to test and validate the impact of social media influencer's marketing efforts on consumer engagement. This framework also may serve as a foundation for marketers to develop effective influencer strategies for brand promotions. The review concludes the discussion by highlighting theories, methodology, and context of studies conducted by past researchers.     

旅游从业人员灰色收入的来源和作用分析

旅游从业人员的灰色收入一直都是旅游业内甚至整个社会讨论的主题之一。灰色收入长期存在于旅游行业是不争的事实。本文探讨旅游从业人员的灰色收入来源以及讨论它存在的消极作用。