非线性SD模型振荡行为的结构基础解析及其应用

从系统动力学模型的结构角度对非线性大系统的振荡行为机制进行了分析,并给出了表函数环节的增益与相位移,完善了对复杂非线性SD模型的分析与把握,同时结合实际课题,利用该结构基础解析的思想对含有表函数环节的某非线性环境污染主导结构进行了分析,举例说明了该振荡分析方法的实际应用,并展示了它的实际应用价值。     

Governance dynamics in inter-organizational networks: A meta-ethnographic study

Governance has been a pervasive theme in the discussions of strategy and management in the context of inter-organizational networks. To date, network researchers call for a dynamic theory of governance to deal with increased uncertainty in the network environment. In response to this call, this study aims to generate a better understanding of how and why governance in inter-organizational networks can change over time and what implications these governance dynamics have for the network and its members. A meta-ethnographic analysis of 15 longitudinal case studies reveals that network actors can combine relational and formal governance in different ways over time, thereby constituting three governance patterns: the relational celebration pattern, the competitive protection pattern, and the forced facilitation pattern. The relational celebration and competitive protection patterns can generate favorable outcomes for the network and its members if disagreement about the formal governance terms is eliminated by revising these terms and/or repeating the pattern with a subset of the network members. In the case of the forced facilitation pattern, favorable network outcomes emerge if different types of relational governance are balanced. By detailing how and why governance patterns emerge and can generate favorable outcomes for the network and its members, the present research creates a better understanding of governance dynamics for researchers, business practitioners, and policymakers.     

基于竞争性信息传播模型的信息失真治理研究

网络谣言是由信息失真产生的不良信息，本文从微博社交网络谣言事件传播演化一般过程出发，研究谣言信息与辟谣信息的竞争传播过程，基于SIR模型进行改进，从系统动力学视角构建谣言信息和辟谣信息的竞争传播模型，并使用Anylogic软件实现模型仿真。实验表明，网民素养较高时，谣言信息的传播规模显著萎缩。节点接触环境中辟谣信息的接触权重较大时，能有效抑制谣言的传播。进而总结了研究的理论意义和实践意义，提出了提高网民素质、对网络节点的接触环境进行调控等网络空间不良信息治理建议。     

文东地区沙河街组油源对比与注入史研究

运用地球化学研究手段，对文东地区沙二和沙三段原油、油砂和泥岩进行了饱和烃气相色谱-质谱分析，认为沙二和沙三段原油来自沙三段烃源岩；通过对研究区储层流体包裹体的分析，结合原油构造演化资料，对沙二和沙三段油藏的成藏时期进行了分析。沙二段油气藏主要成藏期为东营中后期及抬升剥蚀期，主成藏期为30~17Ma；沙三段为两期油气充注，第一期为在东营初期（距今33~23Ma），为主成藏期；第二期发生在明化镇期（距今10~0Ma）之后。对文东地区成藏模式进行了分析，把文东地区油藏分为近洼原生型、 油源断层控制的调整型和浅层次生型3类。     

How rival partners compete based on cooperation?

Prior studies of coopetition have explained the what, how and why of firms cooperating with competitors. Among these, examining the how question as to the stream of coopetition dynamics is the most challenging theme. Previous research has focused much more on the cooperation side. Less attention has been paid to the competition side to reveal what happens to competition after the competitors have collaborated. This study sheds light on the issue of cooperation-based competition by answering the question: while cooperating with competitors, how do rival partners compete based on cooperation? Linking the competitive dynamics perspective to coopetition, we conducted a single-case study to analyse the competition between two leading competitors in the Taiwanese bicycle industry. We collected the reported issues pertaining to the competition in the European market and supported by in-depth interviews. The analysis leads us to develop three propositions and a conceptual framework for illustrating the cooperation-based competition and addressing how cooperation may influence competition in a coopetition relationship. This study provides new insights into a theoretical issue of cooperation-based competition. The case also provides management implications while taking a coopetition strategy.     

提高安徽省人口文化素质的思路与对策

安徽省经济基础薄弱,教育投入不足,办学条件差,教育事业总体上比较落后,导致安徽省人口,尤其是劳动人口文化素质偏低,严重地制约了安徽省经济的发展。针对安徽省教育存在的问题和人口文化素质的实际状况,结合省情省力和"科教兴皖"战略,提出优先发展教育,包括适应市场经济的需要,调整教育结构;增大政府教育投入,并建立多渠道筹措教育经费的新体制;巩固和发展农村基础教育,优化农村教育结构;加强师资培训,建设一支高素质的教师队伍等可行性的对策与建议。     

Life table analysis of the green rice leafhopper,Nephotettix virescens (distant) (Hemiptera: Cicadellidae), and efficient vector of rice tungro disease in asynchronous rice fields in Indonesia

Summary Population dynamics ofNephotettix virescens was studied in 17 paddy fields transplanted at intervals of about 1 month in 1988–1990. The adult density was highest either in the immigrant or the 1st generation and sharply decreased to the 2nd generation. The survival rate of the 1st generation was lowest in the transition season when areal population density increased. Key factor analysis revealed that the nymphal and adult mortality of the 1st generation (kn) was the principal source of population fluctuations. No significant correaltion was found between kn and natural enemy density, natural enemy density/healthy egg density, or the precipitation during the nymphal period. On these bases adult emigration was suspected to be the key factor. Areal population build-up ofN. virescens in the transition season was considered to occur as a result of increasing immigration to young stages of rice. Contribution from Indonesia-Japan Joint Program on Food Crop Protection (ATA 162), which was implemented by the Directorate of Food Crop Protection, Ministry of Agriculture, Indonesia and Japan International Cooperation Agency, Japan.     

Corporate competition: A self-organized network

A substantial number of studies have extended the work on universal properties in physical systems to complex networks in social, biological, and technological systems. In this paper, we present a complex networks perspective on interfirm organizational networks by mapping, analyzing and modeling the spatial structure of a large interfirm competition network across a variety of sectors and industries within the United States. We propose two micro-dynamic models that are able to reproduce empirically observed characteristics of competition networks as a natural outcome of a minimal set of general mechanisms governing the formation of competition networks. Both models, which utilize different approaches yet apply common principles to network formation give comparable results. There is an asymmetry between companies that are considered competitors, and companies that consider others as their competitors. All companies only consider a small number of other companies as competitors; however, there are a few companies that are considered as competitors by many others. Geographically, the density of corporate headquarters strongly correlates with local population density, and the probability two firms are competitors declines with geographic distance. We construct these properties by growing a corporate network with competitive links using random incorporations modulated by population density and geographic distance. Our new analysis, methodology and empirical results are relevant to various phenomena of social and market behavior, and have implications to research fields such as economic geography, economic sociology, and regional economic development.     

Networks of action and events over time. A multilevel discrete-time event history model for longitudinal network data

Longitudinal network data recording the moment at which ties appear, change, or disappear are increasingly available. Event history models can be used to analyze the dynamics of time-stamped network data. This paper adapts the discrete-time event history model to social network data. A discrete-time event history model can easily incorporate a multilevel design and time-varying covariates. A multilevel design is needed to account for dependencies among ties and vertices, which should not be ignored in a small longitudinal network. Time-varying covariates are required to analyze network effects, that is, the impact of previous ties. In addition, a discrete-time event history model handles constraints on who can act or who can be acted upon in a straightforward way. The model can be estimated with multilevel logistic regression analysis, which is illustrated by an application to book reviews, so network evolution can be analyzed with a fairly standard statistical tool.     

论语言顺应的动态性——基于广告语言的分析

根据Verschueren语言顺应论,顺应的动态性指语言选择过程中语境和语言结构之间所作的动态顺应,揭示的是语言选择的“实际过程”,也是语言意义动态协商生成过程。语言顺应的动态性在广告语言使用中主要体现分别为：（1）语言使用随着时间流转而产生意义的变化,具有微观和宏观两方面的表现;（2）作为语境中重要组成部分的交际双方所处的社会关系及认知心理状态具有极强的流动性;（3）广告语篇布局谋篇的灵活性;（4）广告言语事件或活动使其表意框架具备的规约性及变异性;（5）语言意义体现的多样策略性,如隐形和显性等。