强非局域非线性介质中高斯光束的传输特性

从Helmholtz方程出发,讨论了高斯光束在1＋1维强非局域非线性介质中的传输特性及其光束柬宽随位置的演化,即当介质的响应函数为高斯型时,用理论分析和数值模拟的方法,讨论了响应函数的特征宽度wm对光束传输的影响．     

高职学生顶岗实习期间党建模式探索

高职院校学生顶岗实习期间,学生的党建工作一直以来存在着很大难度.建立一套切实可行的学生顶岗实习期间党建管理模式,是新形势下高职院校党建工作中急需认真研究并解决的问题.可在分析学生党员自身、学校管理以及顶岗实习环境等因素的基础上,探索新的党建模式,并建立可行的管理方案.     

三峡工程导流明渠截流模型试验跟踪预报及实施

 三峡工程明渠截流实施期间,水工模型试验全程跟踪原型施工。结合水文水情预报、边 界条件、施工进度对截流水力学指标的影响等问题进行了大量的试验研究,向业主、设计、施工单位提供了大量的跟踪预报试验成果,对原型、模型数据进行了对比总结。这显示出对截流施工的科学化、信息化的管理水平,证实了模型试验的相似性和对施工的指导作用。     

Causal mechanisms of COVID-19 disruptive effects on liability of foreignness and the emergence of new firm-specific advantages

There is the need for comprehensive research on the disruptive effects of COVID-19 on international business (IB) in preparation for future disruption. However, we know little about the causal mechanisms of the phenomenon which impacted IB. Based on a case study of a Japanese automotive firm in Russia, we investigate how firms tackle institutional entrepreneurship with firm-specific advantages to overcome the disruptive effects. Consequently, the pandemic increased institutional costs due to greater uncertainty in Russian regulatory institutions. To manage this, the firm developed new firm-specific advantages to deal with the increasing uncertainty of regulative institutions. The firm united with other firms to motivate public officials to advocate for semi-official debates. Our study contributes to extending intersecting studies on the liability of foreignness and firm-specific advantages through the lens of institutional entrepreneurship. We propose a holistic conceptual process model of the causal mechanisms and a novel construct for new firm-specific advantages.     

Antecedents of mobile payment loyalty: An extended perspective of perceived value and information system success model

Drawing on the information system success model and perceived value theory, we develop a research model to examine factors that may affect user satisfaction and loyalty of mobile payment platforms. Empirical data was collected from users using Alipay and WeChat Pay in China, and a total of 410 valid responses were gathered for data analysis. The results show that the multi-dimensional formative perceived value including benefits and sacrifice is important determinant of mobile payment user satisfaction and loyalty. The three benefit dimensions of functional value, experiential value and social value are more important value components than the two sacrifice dimensions of risk and cost, and experiential value is the dominant component of mobile payment users' value perception. As for the antecedents of perceived value, system quality and service quality mainly affect perceived benefits, while information quality has a greater impact on risk. The research results provide the contribution of specific value dimensions to users' perceived value and the impact of quality characteristics on specific perceived value for mobile payment platform providers, thus helping them to adopt effective strategies to strengthen market competitiveness and retain existing users.     

The impact of influencers' multi-SNS use on followers’ behavioral intentions: An integration of cue consistency theory and social identity theory

The considerable marketing potential brought by the rapid growth of social media has been extensively examined in the literature, particularly in terms of the impact of influencers' recommendations on their followers' decisions. However, little attention has been given to how the individual influencers' use of multiple social networking sites affects their followers' behavioral intentions. Hence, this academic gap warrants further exploration. Drawing on cue consistency theory, social identity theory, and stimulus-organism-response framework, this research proposes three research questions and constructs an integrated research model to explore how the influencers' cue consistency affects the social identification of their followers, subsequently influencing their behavioral intentions. A structural equation modeling technique is performed to analyze the data of 510 valid respondents. The findings show that influencers' consistent cues (i.e., information and image consistency) across social media have positive impacts on followers' cognitive and affective identification toward the influencers. Furthermore, the determinants for followers' purchase intention and electronic word-of-mouth intention are affirmed to serve as both cognitive and affective identification. Especially, the results indicate that the relationships between followers’ social identifications and behavioral intentions are moderated by the type of influencer (i.e., lifestyle vs. review). Accordingly, the results indicate how the use of multiple social networking sites by influencers impacts the behavioral intentions of their followers. The findings offer new insights into influencer marketing and provide important lessons for marketers.     

Becoming a tree when I will be dead? Why not! Generation X,Y and Z,and innovative green death practices

Within the theoretical field of ethical consumption, the study focuses on consumer behavior and innovative green death practices. While scarcely investigated in the marketing and consumer behavior research domains, at least four main reasons spur to consider the funeral industry as an interesting subject of enquiry: i) the sector boasts of a significant economic relevance; ii) it is extremely impactful from an environmental and social point of view; iii) it is witnessing interesting innovative processes in the direction of social and environmental sustainability; iv) consumer movements are rising all over the world asking for more sustainable death practices. Thus, adopting an augmented version of the theory of planned behavior (TPB), which includes individuals’ environmentally responsible consumption, and egoistic and altruistic environmental concern, the study investigates behavioral intention to adopt innovative green death practices (a green funeral) of people belonging to three different generations: X, Y, and Z. A purposive sample of 627 Italian people participated in an online the survey. Collected data were analyzed adopting an ordinal logit model. The results confirm the TPB predictive power also in the field of green funeral behavioral intention. Furthermore, environmentally responsible consumption and environmental concern – even though only in its altruistic component – positively influence behavioral intention, and generation exerts a moderating effect among the examined constructs. Overall, the research attempts to enrich the literature on ethical consumption by exploring the underinvestigated phenomenon of buying behavior of unsought and end-of-life products, that of green funerals, and provide managerial recommendations to funeral service sellers.     

Model-free portfolio theory: A rough path approach

Based on a rough path foundation, we develop a model-free approach to stochastic portfolio theory (SPT). Our approach allows to handle significantly more general portfolios compared to previous model-free approaches based on Föllmer integration. Without the assumption of any underlying probabilistic model, we prove a pathwise formula for the relative wealth process, which reduces in the special case of functionally generated portfolios to a pathwise version of the so-called master formula of classical SPT. We show that the appropriately scaled asymptotic growth rate of a far reaching generalization of Cover's universal portfolio based on controlled paths coincides with that of the best retrospectively chosen portfolio within this class. We provide several novel results concerning rough integration, and highlight the advantages of the rough path approach by showing that (nonfunctionally generated) log-optimal portfolios in an ergodic Itô diffusion setting have the same asymptotic growth rate as Cover's universal portfolio and the best retrospectively chosen one.