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This paper investigates the perfect Bayesian equilibrium in an ascending-price core-selecting auction, which is recently used in some countries? spectrum license auctions. We suppose that there are two identical items, two small bidders, and one large bidder. The small bidders demand only one unit of the item, whereas the large bidder wants both units. Package bidding ensures that the large bidder faces no exposure problem and behaves truthfully. However, one of the small bidders stops bidding at the beginning in the equilibrium. Although small bidders generally face the free-rider problem and have incentives to underbid, once a bidder is the only small one remaining, he bids truthfully. Stopping early induces the remaining bidder to behave truthfully. Hence, each small bidder wants to be the first to stop bidding. The free-rider problem is considerably mitigated when there are many small bidders.  相似文献   
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私法与公法的不断交融使得传统的公法私法二元论不断受到冲击。并非完全二元对立的私法与公法在法律规范层面存在不同种类的协动形式,私法公法协动论可以有效解释公法私法的新关系。私法与公法的协动既存在于利益层面,也存在于主体层面。利益层面的私法公法协动论主要包括公法规范和私法规范的重叠型适用、冲突调节型适用和协同型适用三类。重叠型适用主要出于保护特定利益的需要;冲突调节型适用则需要基于适当性、必要性和均衡性调节有冲突的利益关系;协同型适用本质是对利益的双重连续性衡量过程,可以分为差异化协同、竞合协同和组合协同等不同情况。而主体层面的私法公法协动论主要包括公私协动和私行政法等内容。  相似文献   
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We study the optimal bond portfolio for an investor with long time horizonusing Japanese interest rate data. A simple one-factor term structure modelis used for our numerical example. The optimal portfolio is computed using thetechnique of stochastic flows and Monte Carlo simulation. The hedgingportfolio is not negligible and the mean variance portfolio is very sensitiveto parameter values. The optimal portfolio is highly leveraged for a typicalparameter value. The investor holds a zero-coupon bond because of the lowerbound restriction on investor's wealth. The lower bound constraint may makethe optimal portfolio more realistic.  相似文献   
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Building off the resource‐based view and the knowledge‐based view, our study aims to examine determinants of firms’ R&D outsourcing, using annually‐conducted firm‐level survey data of Japanese R&D companies from 1984–2012. This survey allows us to measure strategic R&D outsourcing, isolated from those more for cost‐reducing, such as prototyping, testing and inspecting. The results corroborate the argument of complementarity in scale between internal R&D and R&D outsourcing. We also find that firms employing more doctorate holders and diversifying in knowledge spaces tend to make more use of R&D outsourcing. This study sheds light on firms’ absorptive capacity, associated both with higher‐order R&D human capital and diversified knowledge spaces, as determinants of R&D outsourcing.  相似文献   
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