生命周期模型中的货币流通速度

Social Media, Money, and Politics: Campaign Finance in the 2016 US Congressional Cycle

With social media penetration deepening among both citizens and political figures, there is a pressing need to understand whether and how political use of major platforms is electorally influential. Particularly, the literature focused on campaign usage is thin and often describe the engagement strategies of politicians or attempt to quantify the impact of social media engagement on political learning, participation, or voting. Few have considered implications for campaign fundraising despite its recognized importance in American politics. This paper is the first to quantify a financial payoff…

Dynamic investment model of the life cycle of a company under the influence of factors in a competitive environment

Modelling all possible life cycles of a company in a highly competitive economic environment gives a significant advantage to the owner in his business investment activities. This article proposes and analyses a dynamic model of a company's life cycle with known action costs and transition probabilities, that can be affected by an outside influence. For this task, the Markov model was utilized. The proposed model is illustrated on a task of determining an advertising policy for a car dealership, that would increase the stock equity of a company. The result demonstrates the usefulness of a mode…

便利店产品生命周期与重复购买行为的统计关系

The statistical relationship between product life cycle and repeat purchase behavior in convenience stores

便利店产品生命周期的密度函数服从威布尔分布。为了阐明决定这些生命周期的参数，我们引入了有条件的市场份额定义为只有在以前购买过产品的情况下客户才会选择该产品的概率以及没有任何条件的市场份额。产品生命周期与产品的有条件市场份额的相关性比与后一种市场份额的相关性更强。

ORLCA：一个为研究而构建的开源生命周期评估库的概念

ORLCA: A concept for an open-source Life Cycle Assessment repository built for research

本文提出ORLCA，一个符合FAIR原则的开源生命周期评估库概念，用于核算科学实验和研究基础设施的环境影响，以支持减少资源使用影响。

Urban hierarchy and spatial diffusion over the innovation life cycle

Successful innovations achieve large geographical coverage by spreading across settlements and distances. For decades, spatial diffusion has been argued to take place along the urban hierarchy such that the innovation first spreads from large to medium cities then later from medium to small cities. Yet, the role of geographical distance, the other major factor of spatial diffusion, was difficult to identify in hierarchical diffusion due to missing data on spreading events. In this paper, we exploit spatial patterns of individual invitations on a social media platform sent from registered users…

社会互动对电影生命周期的影响

The effect of social interactions in the primary life cycle of motion pictures

我们通过考虑目标群体的规模和社交互动的影响，对单部电影的影院上座率的消费生命周期进行建模。我们提供了这样一个模型的分析解决方案，我们从电影行业的经验数据对比获得良好的协议与不同类型的行为经验发现，该模型授予定量测量的基础上，谁看过电影和那些谁没有代理之间的耦合的相对值的价值，这种文化产品的价值。这代表了对观察到的商品质量的测量，该质量仅从其动态中提取，独立于评论家的评论。