异质性资产获取、商业模式创新与并购绩效：基于AT&T收购时代华纳的案例研究

本文通过AT&T收购时代华纳的纵向案例研究,试图揭示数字经济时代异质性资产获取型并购如何通过商业模式创新实现绩效提高.研究发现:异质性资产获取型并购在特定条件下可以提高并购方企业绩效,企业可以从新颖、互补、锁定和效率4个主题创新商业模式;而企业的动态能力有助于其识别、获取合适的异质性资产,推动并购后的商业模式创新和新的资源能力基础构筑,从而提高并购绩效.本文的研究对于数字经济时代企业异质性资产获取型并购如何通过商业模式创新提高绩效,以及运营商企业如何整合异质性资产推动商业模式创新和数字化转型提供了参考和借鉴.     

异质性信息对淡水养殖户采纳两型生产技术的影响——以社会网络为工具变量的实证检验

本文为比较不同类别信息对淡水养殖户采纳两型生产技术的影响效应,在对农户采纳技术行为进行理论分析的基础上,构建以社会网络作为工具变量的回归模型.结果表明,①获取技术信息对农户采纳两型农业技术有显著的促进作用,在不考虑技术信息内生性的情况下,获取技术信息的影响会被低估;②不同类别信息对农户采纳两型农业技术的影响程度不同,获取技术使用信息对农户采纳两型农业技术的影响程度大于获取技术市场信息.在使用信息中,操作信息比经验信息对农户采纳技术的促进作用更大;在市场信息中,价格信息比质量信息对农户采纳技术的促进作用更大.     

基于AHP和模糊方法的库存航材ABC分类模型

根据航材部门实际的工作需要将航材的危害度、损耗性、易得性、经济性和任务需求性作为分类准则,通过ABC分类来求解航材对分类准则的权重,然后运用层次分析法计算航材的组合权重,并使用模糊评价的方法计算航材针对各准则的优先分值,再根据组合权重对航材进行ABC分类,该方法用于航材的分类可以快速有效地找出重点航材,提高航材管理工作的针对性和有效性。     

Heterogeneous Agents in Public Goods Experiments

We explore by purely experimental means a heterogeneous agents scenario in experimental public goods games, assuming the existence of at least three types of player: free riders, cooperators, and reciprocators. We identify the various types by means of four classification methods, and then play the public goods game with homogeneous groups. We observe that (eq1) the average contribution level is enhanced in this setting; (2) the decay phenomenon is replicated in groups of pure free riders, whereas in groups of cooperative and reciprocating players the contribution is high and fairly stable throughout the game.The experiments reported in this paper were financed by the Cognitive Science Laboratory and the Computational and Experimental Economics Laboratory of the University of Trento. We would like to thank Marco Tecilla, Macrina Marchesin and Dino Parisi for their help in running the experiments, and Luigi Mittone, director of CEEL, for letting us use the laboratorys resources. Paul Webley, Robert Moir, seminar participants at the Universities of Pisa and Trento, Charles Holt and two anonymous referees provided very useful comments on a previous draft.     

Unskilled Migration: A Burden or a Boon for the Welfare State?

As relatively low earners, migrants are net beneficiaries of the welfare state. Therefore, in a static setup, migration may be resisted by the entire native-born population. However, it is shown that in a dynamic setup with a pension system, which is an important pillar of any welfare state, migration is beneficial to all income (high and low) and all age (old and young) groups, when the economy has good access to international capital markets. The pro-migration feature of the dynamic model is weakened and possibly overturned when the economy does not have good access to such markets. In this case, to the extent that factor prices are significantly affected by migration because of low substitution between labour and capital, low-skill native born and possibly also high-skill native born may lose.     

The optimal supply of congested public goods for homogeneous and heterogeneous customers

Impure public goods resulting from the congestion effect are discussed in the literature solely for the case of homogenous populations where consumers have identical demands. We extend this to include heterogeneous populations, where demands are rectangularly distributed. We compare the optimal values of the control variables (quantity of the public good and the number of users) for both homogeneous and heterogeneous populations, as well as the social optimum values for both cases. We distinguish between two kinds of congestion effects: (1) increased usage which negatively affects the individual consumer's utility, and (2) the affect is located on the supply side, i.e. higher production costs due to an increased number of users.     

实现飞机状态监视的ACARS数据链新应用

法航447空难和马航370失联事件促使航空公司更关注对飞机的监控。分析了常用的飞机通信和监视手段,提出了一种使用ACARS实现飞机状态监视的数据链应用,通过飞机信息处理、消息封装、数据压缩和信息编码4个实现步骤,周期下传包含飞行参数、飞机系统状态和故障告警信息的ACARS消息。该方法间接提升了ACARS网络的信息容量,使航空公司等地面用户能够实时全面监视飞机状态。     

FOB 盛行之谜：贸易成本与异质性企业的 贸易术语选择

在《2010年国际贸易术语解释通则》规定的11种贸易术语中,企业收汇风险较大的FOB具有最高的使用频率。本文通过拓展现有异质性企业贸易模型,阐述了贸易成本对企业贸易术语选择行为的影响机制。该模型表明,二元经济结构、要素市场不完善和加工贸易居多是导致出口企业倾向于使用FOB成交的主要原因,贸易术语多元化能够通过增加企业出口机会改善社会福利水平,及时调整企业内外销的相对贸易成本对降低出口收汇风险和平衡我国内外需求水平至关重要。