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PRICE VS QUANTITY IN A DUOPOLY WITH TECHNOLOGICAL SPILLOVERS: A WELFARE RE-APPRAISAL 具有技术溢出的双头垄断中的价格vs数量:福利重新评估
Keio economic studies
Pub Date : 2000-01-01 DOI: 10.6092/UNIBO/AMSACTA/685
L. Lambertini, A. Mantovani
We analyse the problem of the choice of the market variable in a model where firms activate RD and (ii) there exists a set of the relevant parameters where a benevolent social planner prefers quantity setting to price setting. This happens when the marginal cost of R&D activities is relatively low while technological externalities are relatively high. In this situation, the conflict between social and private preferences over the type of market behaviour disappears.
我们在企业激活研发的模型中分析了市场变量的选择问题，并且(ii)存在一组相关参数，其中仁慈的社会计划者更喜欢数量设定而不是价格设定。当研发活动的边际成本相对较低而技术外部性相对较高时，就会发生这种情况。在这种情况下，社会偏好和个人偏好之间对市场行为类型的冲突就消失了。
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引用次数: 2
Monopoly, Quality, and Network Externalities 垄断、质量和网络外部性
Keio economic studies
Pub Date : 1998-12-01 DOI: 10.6092/UNIBO/AMSACTA/4975
L. Lambertini, Raimondello Orsini
We describe the behaviour of a monopolist supplying a vertically di¤erentiated good with network externalities. Assuming a fixed cost of quality improvements we show that the presence of network externalities enhances the incentive to expand output associated with scale economies. Although the quality distortion operated by the monopolist increases with network externalities, the outputexpansion effect is dominant, so that the welfare loss due to monopoly power shrinks as the role of network externalities in determining consumers’ satisfaction becomes more relevant.
我们描述了提供具有网络外部性的垂直差异化商品的垄断者的行为。假设质量改进的成本是固定的，我们证明了网络外部性的存在增强了与规模经济相关的扩大产出的激励。尽管垄断者操作的质量扭曲随着网络外部性的增加而增加，但产出扩张效应占主导地位，因此，随着网络外部性在决定消费者满意度中的作用变得更加相关，垄断力造成的福利损失也会缩小。
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引用次数: 8
THE INTERNATIONAL COORDINATION OF MONETARY POLICY: A GAME-THEORETIC REFORMULATION 货币政策的国际协调:博弈论的重新表述
Keio economic studies
Pub Date : 1996-03-01 DOI: 10.6092/UNIBO/AMSACTA/5060
L. Lambertini
This paper reformulates the issue of the international coordination of monetary policy in the framework of an extended game with observable delay, where governments are required to set the timing of their respective actions before proceeding to the actual choice of their monetary policies. This allows to shrink signi…cantly the set of equilibria.
本文在一个具有可观察延迟的扩展博弈框架下，重新阐述了货币政策的国际协调问题，在这种博弈中，各国政府在实际选择货币政策之前，需要设定各自行动的时机。这允许显著缩小平衡集。
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引用次数: 9
A NOTE ON MODELLING ENDOGENOUS GROWTH 关于内生增长建模的说明
Keio economic studies
Pub Date : 1996-01-01 DOI: 10.1007/0-387-26376-4_6
R. Sato
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引用次数: 3
Intraindustry trade under vertical product differentiation 垂直产品差异化下的行业内贸易
Keio economic studies
Pub Date : 1995-10-01 DOI: 10.6092/UNIBO/AMSACTA/5080
L. Lambertini
The paper focuses on trade between two countries where a vertically differentiated commodityis produced by a single firm in each country, operating initially in autarkic conditions. It is assumed that the two countries have overlapping income distributions, giving thus rise, under certain conditions, to two-way trade, i.e., a proper intraindustry trade. It emerges that while consumers always benefit from trade, especially if two-way trade arises, firms may have conflicting preferences on the choice between (i) autarky and trade, as well as (ii) one-way trade and two-way trade.
本文关注的是两国之间的贸易，其中垂直差异化的商品由两国的一家公司生产，最初在自给自足的条件下运作。假设两国的收入分配重叠，因此在某些条件下会产生双向贸易，即适当的产业内贸易。由此可见，虽然消费者总是从贸易中受益，尤其是在双向贸易出现的情况下，但企业在(1)自给自足和贸易之间的选择，以及(2)单向贸易和双向贸易之间的选择，可能会有冲突的偏好。
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引用次数: 13
Foreign investment and migration: analytics and extensions of the basic model. 外商投资与移民:基本模型的分析与扩展。
Keio economic studies
Pub Date : 1990-01-01
R W Jones, S T Easton

"This paper provides a unified approach to the basic model of international factor mobility. The use of new graphical techniques complements the algebraic exposition to underscore the persistence of the Ramaswami effect which pushes an active, home country toward a near 'buy-out' of the foreign country's internationally mobile factors of production. By generalizing the Ramaswami function, which identifies the gains associated with moving to near buy-out, we are able to explore the forces at work that mitigate such a strategy and lead to situations in which only a partial buy-out, or even no acquisition of foreign factors is optimal. These features are developed in a context in which (i) technologies differ between countries or (ii) there exists a third, immobile factor of production."

本文为国际要素流动的基本模型提供了一个统一的方法。新的图形技术的使用补充了代数展示，以强调Ramaswami效应的持久性，这种效应推动一个活跃的母国接近于“收购”外国的国际流动生产要素。通过推广Ramaswami函数，它确定了与接近收购相关的收益，我们能够探索在工作中减轻这种策略的力量，并导致只有部分收购，甚至没有收购外国因素是最佳的情况。这些特征是在以下情况下形成的:(1)各国技术不同，或(2)存在第三种不可移动的生产要素。”
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引用次数: 0
Is Japan following Europe towards a society of singles? Possible impacts of the rapid increase in life expectancy on Japanese social structure--as seen by a European historical-demographer. 日本是否会步欧洲的后尘，走向单身社会?预期寿命快速增长对日本社会结构可能产生的影响——一位欧洲历史人口统计学家的观点。
Keio economic studies
Pub Date : 1986-01-01
A E Imhof
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引用次数: 0
Class differences in marriage and fertility among Tokugawa villagers in Mino province. 米诺省德川村村民婚姻和生育的阶级差异。
Keio economic studies
Pub Date : 1980-01-01
A Hayami

"This paper uses family reconstitution to derive indices of marriage and birth rates from observation of class differences in six villages on the Nobi plain (near Nagoya), [Japan]." The study covers the Tokugawa period, which lasted from 1603 to 1868.

“这篇论文利用家庭重构，通过观察(日本)野比平原(名古屋附近)六个村庄的阶级差异，得出了婚姻和出生率的指数。”该研究涵盖了1603年至1868年的德川时期。
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引用次数: 0
Class differences in marriage and fertility among Tokugawa villagers in Mino province. 米诺省德川村村民婚姻和生育的阶级差异。
Keio economic studies
Pub Date : 1980-01-01 DOI: 10.1163/EJ.9781906876098.I-382.84
A. Hayami
"This paper uses family reconstitution to derive indices of marriage and birth rates from observation of class differences in six villages on the Nobi plain (near Nagoya), [Japan]." The study covers the Tokugawa period, which lasted from 1603 to 1868.
“这篇论文利用家庭重构，通过观察(日本)野比平原(名古屋附近)六个村庄的阶级差异，得出了婚姻和出生率的指数。”该研究涵盖了1603年至1868年的德川时期。
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引用次数: 35
Thank you Francisco Xavier: an essay in the use of micro-data for historical demography of Tokugawa Japan. 谢谢你弗朗西斯科·泽维尔:一篇关于在日本德川历史人口统计学中使用微观数据的文章。
Keio economic studies
Pub Date : 1979-01-01
A Hayami
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引用次数: 0
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