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网络德育是德育发展的新形态。要实现网络德育实践的真正有效,必须形成正确的网络德育观,它是网络德育有效的基础和保证。对于网络的正确认识是网络德育观形成的起点。 相似文献
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本文基于2001-2016年的146起中国制造业上市公司海外并购样本的事件研究与大数据Bootstrap重复抽样检验，得出结论，内外网络均衡对中国企业海外并购后国内创新质量和国际创新质量均产生正向影响，且对国内创新质量的促进作用高于国际创新质量；母国和东道国的数字化水平对网络均衡与中国企业海外并购后国内和国际创新质量的关系也均具有显著的正向调节作用；按照母国与东道国数字鸿沟分组检验结果发现，数字鸿沟小时，并购方网络均衡与东道国数字化水平的交互作用更能提升中国企业海外并购后创新质量；进一步按照目标方知识复杂度高低进行分组检验，发现目标方知识复杂度高时，网络均衡与数字化的交互作用对提升中国企业海外并购后国内创新质量与国际创新质量的作用都高于知识复杂度低时。本文阐释数字经济中新兴市场跨国企业构建内外均衡网络兑现全球性创新优势的全新机制，在数字化加剧服务与制造分离的情景下，对中国制造业企业运用内外均衡网络，海外寻求复杂性强的隐性知识，加速中国消费端数字化向工业互联网资源的配置转移，利用数字化强外部性整合工业产业创新资源走向世界创新中心，具有重要价值。 相似文献
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根据企业的知识基础理论和网络组织理论,跨国公司可以被看作在全球范围内积累和运营知识的内外部网络的统一体。有效地在跨国公司内部网络结点之间进行知识的共享和转移,是跨国公司在更大范围内扩展其竞争优势的必要前提之一。跨国公司各内部网络结点所积累的国别性专有知识产生于其所在国特定的社会政治、经济和文化背景之下,因此,跨边界知识转移的有效性必然受到一系列与此相关因素的影响,本文分析了这些因素的影响,并给出一个概念模型。 相似文献
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创新集群理论视角下长三角众创空间优化策略研究 总被引：1，自引：1，他引：0
以长三角地区众创空间为例开展探索式分析,在系统阐释创新集群与众创空间的内在理论逻辑的基础上,提出优化众创空间的策略:构建以市场需求为导向的经济网络、以企业产品为核心的社会网络、以高校创新为源头的知识网络,全方位助推区域产业转型升级。 相似文献
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本文从关系嵌入和结构嵌入两个维度界定"资源导向"下的企业网络行为,并应用网络权力分布思想对不同"资源导向"下的企业网络行为进行规则仿真,构建中小企业集群网络演进的多主体仿真模型,对其演进规律和特征进行分析和探讨。本文研究表明,对于中小企业集群而言:(1)群内企业不同的共性行为,会导致不同的集群网络结构;(2)群内企业间的"力量差距"会随着集群的演进逐渐增大,但并非所有的集群都会出现主导企业;(3)集群网络的长期演进轨迹与集群初始状态无关,且群内会形成相对稳定的交流圈;(4)集群网络演进是一个自组织和自无序交替的过程,其系统稳定性主要受企业行为和演化时间的影响。 相似文献
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David J. Proctor Alan Robson Margaret A. Veal 《Information processing & management》1978,14(6):429-443
Increasing concern about the release of potentially harmful chemicals into the environment has led to efforts to collect data on such chemicals with a view to identifying and minimising the associated hazards. The collection and storage of such data requires cooperation and communication (both national and international) between partners in a general environmental data network. A format is described for the exchange of data between these network partners. This format is of general applicability. It is shown that a hierarchical tree structure best describes the situation. Rules are derived to identify and process the nodes in the tree such that information is neither lost nor degraded upon transfer between the network partners. 相似文献
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校园网的建设是每个学校的重要组成部分,对于校园网来说,就是确定连接节点的个数,运用设备使分布在不同位置的信息节点连接到一个统一的网络中,使整个校园网中的信息节点相互联通。本文找出影响校园网性能的主要因素和网络"瓶颈",利用仿真软件OPNET搭建实验平台对改进的方案进行了仿真,并分析了实验结果。 相似文献
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The behavior of a droplet train in a microfluidic network with hydrodynamic traps in which the hydrodynamic resistive properties of the network are varied is investigated. The flow resistance of the network and the individual droplets guide the movement of droplets in the network. In general, the flow behavior transitions from the droplets being immobilized in the hydrodynamic traps at low flow rates to breaking up and squeezing of the droplets at higher flow rates. A state diagram characterizing these dynamics is presented. A simple hydrodynamic circuit model that treats droplets as fluidic resistors is discussed, which predicts the experimentally observed flow rates for droplet trapping in the network. This study should enable the rational design of microfuidic devices for passive storage of nanoliter-scale drops. 相似文献
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Cellular neural network (CNN) is a type of analog, nonlinear, real-time parallel processing network. The paper studies an implementation of the integrated operational amplifier used in the design of an artificial CNN. It improves the implementation of CNN proposed by Chua. A 4 x 4 artificial CNN circuit is designed, obtaining a better characteristic of a CNN connected component detector. Finally, a fast algorithm for a CNN component detector is given which proves to be very simple and quite convenient. 相似文献
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通过使用功能等价法，实现了传统文献到网络文献的迁移。从表面上看，该方法是一种类似功能的传递，实质上它是传统文献在网络环境中的嫁接。它既适应了网络文献灵活多变的特征，又满足了传统文献引用价值的平衡，是网络文献引用规范化的一个有益的尝试。 相似文献
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在金属表面络合网格状高分子膜实现滴状冷凝的MD模拟研究 总被引：4，自引：0，他引：4
提出了在铜表面络合上一种网格状高分子膜来实现水蒸汽滴状冷凝的新模型。预计这种单分子层的高分子膜可以被大片的配位键牢牢地粘附在金属表面上,并具有可自修复的特性,因而可望获得超长使用寿命和较高传热效率的滴状冷凝表面。根据相关的成膜或成滴的判据,用分子动力学模拟方法计算了水分子的内聚能和表面的吸附能。结果表明,在这种网格状高分子膜的表面上可以实现滴状冷凝。并且,通过观察粒子的平衡位型分布,可以看到网格状高分子中的大环结构可能起到核化中心位的作用。 相似文献
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面向对象专家系统的知识表示方法研究 总被引：8，自引：0，他引：8
A method for the construction of an object-oriented expert system with its knowledge database independent of program is introduced. Its knowledge representation,reasoning mechanism, semantic network and frame structure are described in detail. Fimally,the author compares the object-oriented knowledge representation method with the semantic network and frame structure. 相似文献
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Network embeddedness and the exploration of novel technologies: Technological distance, betweenness centrality and density 总被引：4，自引：0，他引：4
This paper aims to understand better the innovation potential of a firm’s alliance network. Here we analyze the role of an alliance network in terms of the technological distance between partners, a firm’s network position (centrality) and total network density. We study how these three elements of an alliance network, separately and in combination, affect the ‘twin tasks’ in exploration, namely novelty creation on the one hand and its efficient absorption on the other hand. For an empirical test, we study technology-based alliance networks in the pharmaceutical, chemical and automotive industries. Our findings indicate that successful exploration indeed seems to require a delicate balance between these two exploration tasks. A second conclusion is that different network positions yield different pay-offs in terms of the number of explorative patents. In other words, success rates for exploration are not spread equally across firms. However, position alone does not tell the full story. Our empirical findings clearly indicate that exploration success also depends on the other two dimensions of embeddedness, namely technological distance and network density. The three elements of network embeddedness need to be considered jointly in order to understand their complementary effects on both novelty creation and absorptive capacity. 相似文献
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信息化建设中的下一代网络架构是以软交换为核心技术的下一代网络(NGN),是业务、控制、接入和承载彼此分离的网络,是一个开放、可扩展的网络。本文结合学校教学效果的特点,介绍了下一代网络的基本概念和技术特点,重点探讨了以软交换技术为基础的下一代交换网络,并分析了软交换中的协议和标准以及所采用的SIP协议的原理; 相似文献
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This paper addresses the emergence and development of firm-centred knowledge networks within learning and innovation systems in late-industrialising countries. A key contribution of the paper is conceptual and methodological: the development of an original typology of knowledge network properties to trace out changes in the form of networks as they evolve over time. A second contribution consists in providing an example of the application of the typology by examining the emergence and development of a firm-centred knowledge network in the case of Petrobras, the Brazilian oil company over more than 30 years between the late 1960s and the early 2000s. This demonstrates that the properties of Petrobras’ knowledge networks continuously evolved through a succession of stages towards (i) increasing intentionality in the management decision-making underlying network development, (ii) growing complexity and diversity in selected cognitive characteristics, and (iii) greater complementarity in the division of innovative labour between Petrobras and its network partners. These original results from applying the typology, in conjunction with retrospective historical methods, illustrate only one aspect of its potential value in the analysis of knowledge networks in late-industrialising economies: tracking out organisational evolution over long periods of time. Others include the comparative examination of network differences across different circumstances and the analysis of relationships between changes/differences in network properties and other characteristics of learning/innovation systems and their contexts. 相似文献