演化经济学框架下环保技术扩散研究——以熔炼压缩炼铁技术的扩散为例

在分析传统框架下扩散模型的局限性及环保技术扩散的特殊性的基础上,以SRT的扩散为例,尝试用演化经济学的框架来探讨环保技术的扩散问题。技术的扩散是技术竞争的动态演化、企业家和异质采用者、制度和政治等共同作用的结果,因此,从一个更广泛的演化经济学的框架来理解技术扩散,特别是环保技术的扩散是很有必要的。     

产业集群内基于时间和距离的技术创新扩散模型研究

以创新和扩散为导向的集群经济效益已成为产业集群的竞争优势所在。基于时间和空间距离因素,构建了产业集群内的技术创新空间扩散模型,应用数据仿真实验,分析了在集群内进行技术创新空间扩散的动态过程,探讨了模型参数变化对技术创新扩散的影响,并着重分析了空间距离对技术创新扩散的影响。结果表明,产业集群内的技术创新扩散是典型的时空统一扩散过程,空间距离会阻碍技术创新的扩散,而且集群内采用技术创新的企业数量与距离因素呈负指数关系,为客观地预测和控制产业集群内时空统一的技术创新扩散过程提供了理论依据。     

高技术产业集群中技术创新与扩散的系统基模分析与政策解析

技术扩散(或知识溢出)是企业集群发展的一个主要诱因,但是技术扩散(或知识溢出)的微观过程依然是一个"黑箱"。将高技术产业集群看成一个系统,应用系统动力学的方法,建立了技术创新动力成长上限基模、技术扩散动力成长上限基模、知识生产与搭便车者两败俱伤基模、知识生产富者愈富基模、集群成长与投资不足基模、集群创新舍本逐末基模、集群发展饮鸩止渴基模共7个系统基模,用以揭示高技术产业集群中技术创新、技术扩散、知识生产、集群成长与集群发展之间因果关系的作用机理及运作机制,并对基模根本解作了政策解析。     

How Task-Facilitative Interactive Tools Foster Buyers’ Trust in Online Retailers: A Process View of Trust Development in the Electronic Marketplace

While there is a sustained interest in research focusing on issues relating to trust development in the electronic marketplace, significant gaps remain in the literature. In particular, little is known of the underlying processes that may be occurring in online trust development. For example, research suggests that factors such as site design and navigability are among the factors that impact trust perceptions. Extant literature, however, is largely silent about why certain trust-related effects are observed in online environments. In this paper, we propose a new process-centric perspective for understanding the formation of online trust—through buyer's assessment of the e-retailer's assistive intent, implicitly embedded in task-facilitative interactive tools. Specifically, we develop and test a model delineating the relationship between seller's provision of interactive product information management and product information comprehension tools, buyer's perceptions of seller's assistive intent, and buyer's initial trust in the seller. The results of two studies provide support for the trust-enhancing effects of task-facilitative informational tools and the mediating role of buyer's perceptions of seller's assistive intent. Importantly, these effects occur without any explicit expressions of seller's intentions. The results also suggest that the efficacy of interactive informational tools in engendering perceptions of seller's assistive intent, and hence trust, varies with the buyer's level of involvement with and knowledge of the product category.     

Modelling a dynamic market potential: A class of automata networks for diffusion of innovations

Innovation diffusion processes are generally described at aggregate level with models like the Bass Model (BM) and the Generalized Bass Model (GBM). However, the recognized importance of communication channels between agents has recently suggested the use of agent-based models, like Cellular Automata. We argue that an adoption or purchase process is nested in a communication network that evolves dynamically and indirectly generates a latent non-constant market potential affecting the adoption phase.Using Cellular Automata we propose a two-stage model of an innovation diffusion process. First we describe a communication network, an Automata Network, necessary for the “awareness” of an innovation. Then, we model a nested process depicting the proper purchase dynamics. Through a mean field approximation we propose a continuous representation of the discrete time equations derived by our nested two-stage model. This constitutes a special non-autonomous Riccati equation, not yet described in well-known international catalogues. The main results refer to the closed form solution that includes a general dynamic market potential and to the corresponding statistical analysis for identification and inference. We discuss an application to the diffusion of a new pharmaceutical drug.     

Bounded entrepreneurship and internationalisation of indigenous Chinese private-owned firms

Based on 16 in-depth case studies this paper argues that the internationalisation behaviour of indigenous Chinese private-owned firms can only be partially explained by the Uppsala model and the theory of international new ventures. Instead, the so-called “bounded entrepreneurship” may be the key influence on the unique internationalisation patterns and competitive positions of these firms. Managerial and policy implications and limitations of the study are discussed.     

基于专利的新技术知识扩散力研究

探讨了技术知识扩散的概念,提出了基于专利的新技术知识扩散力四分图模型,并以多个专利为样本对模型进行了验证,该研究成果可用于由专利体现的新技术成果知识扩散力的预测。     

创新扩散网络结构与创新扩散绩效关系研究

创新扩散网络结构对创新扩散绩效有重要影响。通过设计基于原胞自动机的创新扩散网络仿真模型,模拟不同网络结构的创新扩散过程,依据确定的创新扩散绩效测量指标,分析了创新扩散网络结构参数与创新扩散绩效之间的关系。研究发现,在创新扩散网络中,个体创新信息采纳概率是影响创新扩散速度和规模的最重要因素;创新扩散网络密度越大,创新扩散规模越大,扩散速度越快;初始创新者数量多可以加快创新传播速度,但不能扩大创新扩散规模。     

中美高技术产业间技术扩散模式比较分析——基于投入产出与社会网络方法的分析

基于投入产出和社会网络分析法,对中美两国2000年和2005年高技术产业间技术扩散模式进行了分析。从扩散效应、扩散结构和演化趋势3个方面揭示了中美两国高技术产业技术扩散模式的异同,并指出我国高技术产业发展的薄弱环节及的发展方向。     

社会化网络环境下关键用户识别与产品知识扩散研究

随着社会化商务时代的到来,越来越多的商家意识到消费者网络对产品扩散的重要性,消费者网络节点重要性评价成为营销领域研究的重要内容。传统社会网络节点评价方法考虑了网络的局部拓扑结构,忽略了节点间的相互影响,PageRank考虑了来自邻居的影响力但忽视了节点间本身的重要性。提出了将社会网络中心性与PageRank方法相结合的消费者网络节点价值评价指标构建方法,基于现实数据构建了消费者网络,通过相似性算法对评价算法进行了讨论,运用SIS模型研究了不同节点的产品知识扩散效果,发现网络节点重要性与产品知识扩散显著相关,WCR算法优于传统中心性指标。