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排序方式: 共有218条查询结果,搜索用时 31 毫秒
101.
Hiroshi Shirakawa 《Mathematical Finance》1994,4(1):1-24
We study an optimal consumption and portfolio selection problem for an investor by a martingale approach. We assume that time is a discrete and finite horizon, the sample space is finite and the number of securities is smaller than that of the possible securities price vector transitions. the investor is prohibited from investing stocks more (less, respectively) than given upper (lower) bounds at any time, and he maximizes an expected time additive utility function for the consumption process. First we give a set of budget feasibility conditions so that a consumption process is attainable by an admissible portfolio process. Also we state the existence of the unique primal optimal solutions. Next we formulate a dual control problem and establish the duality between primal and dual control problems. Also we show the existence of dual optimal solutions. Finally we consider the computational aspect of dual approach through a simple numerical example. 相似文献
102.
This gives a complete proof for bounds of the efficiency, conjectured by Das and Kageyama (1992), on robustness of extended
balanced incomplete block designs against the unavailability of any number of observations in a block. 相似文献
103.
Hiroshi Ohashi 《Journal of Economics & Management Strategy》2003,12(4):447-494
This paper estimates the importance of indirect network effects in the US video cassette recorder (VCR) market between 1978 and 1986. Estimation reveals the significant role of networks in the format competition between VHS and Beta. The paper also finds that if Sony, the system sponsor of Beta, had aggressively introduced its VCRs at the early stage of competition, Beta would likely have dominated the market in 1985; instead, the format disappeared in 1989. Finally, the paper measures consumer welfare for the value of network effects in VCRs, and assesses the consumer welfare effect of standardization. 相似文献
104.
Hiroshi Inose 《Information Economics and Policy》1984,1(4):369-379
Social impacts of digital information networks are described in terms of convergence of service modes, integration of socioeconomic activities, change in industrial structure, strengthening social infrastructure and enrichment of culture, with some reference to specific Japanese situations. Emphasis is placed on such issues as reorganization of regulatory measures, interoperability of systems and services, communities of interest, privacy and security, freedom of information, information resource development, software production, shift of workforce, societal receptivity, preservation and creation of culture, and lowering of language barriers. 相似文献
105.
Hiroshi Osano 《The Japanese Economic Review》1998,49(2):138-157
This paper explores whether the "main bank system" in Japan can be explained by a self-enforcing mechanism that motivates delegated monitorin g creditors to be committed not to execute inefficient liquidation even though all agents are risk-neutral. Using a multiple bank model, we specify a standard debt contract equilibrium in which the delegated monitoring creditor does not care about her reputation, and a main bank contract equilibrium in which the delegated monitoring creditor will attempt to honour the loan contract so as not to destroy her reputation. The results show that, under certain conditions, any equilibrium standard debt contract is dominated by an equilibrium main bank contract in which the debtor and the delegated monitoring creditor are strictly better off. Furthermore, the equilibrium main bank contract reflects the prominent features observed in actual bank loan contracts in Japan.
JEL Classification Numbers: D82, G21, G33, G34 相似文献
JEL Classification Numbers: D82, G21, G33, G34 相似文献
106.
Hiroshi Nishi 《Metroeconomica》2019,70(4):620-640
This study builds a dynamic balance‐of‐payments‐constrained model that incorporates the endogenous determination of the economic growth rate, conflictive wage/price distribution and employment rate. The wages, commodity prices and employment rate are determined by the profit squeeze effect and labour‐saving technical change. The relative strength of these two effects generates different outcomes for the transitional dynamics and comparative statics analysis. Particularly, the model shows stability, instability and cyclical nature, the latter of which concurs with the evidence reported by previous empirical studies. 相似文献
107.
Altruism as a motive for intergenerational transfers 总被引:1,自引:0,他引:1
This study investigates the role of altruism as a motive for transfer payments. In the existing literature on altruism, it is generally assumed that a transfer payment is made out of altruism that a transferor feels towards a transferee. This study demonstrates that this is not necessarily the case. By using a dynamic model in which children are altruistic towards parents, it demonstrates that such altruism may induce a parent to give a transfer to children. 相似文献
108.
This paper uses bank-level data to investigate whether the impact of monetary policy on bank lending depends on the characteristics of Chinese banks during the period 1985–2007. We find that the impact of monetary policy on lending is weaker for larger banks and banks with lower levels of liquidity, and that banks’ responses to monetary policy do not necessarily vary according to their capital. Further, to identify the bank lending channel more clearly, we test whether the impact of monetary policy varies according to profitability. The results show that profitable banks tend to be less sensitive to monetary policy, because when tight monetary policy leads to a fall in deposits, less profitable banks face a higher cost of capital. 相似文献
109.
Mami Kobayashi Hiroshi Osano 《Journal of the Japanese and International Economies》2011,25(3):336-354
We develop a main bank model where the main bank decides whether or not to raise additional funds from the capital market to continue to invest in a borrowing firm when nonmain banks withdraw funds. We show that the threat of withdrawal of nonmain banks is more likely to force the main bank to perform efficiently in handling troubled loans, thereby preventing problems with zombie firms, if the potential cash flow (liquidation value) of the firm decreases (increases) relative to the amount funded by nonmain banks. The theoretical results provide both efficiency evaluations for the renewal of the main bank relation in Japan after the end of the 1990s and empirical implications for the renewed main bank system. 相似文献
110.
Hiroshi Ono 《Journal of the Japanese and International Economies》2010,24(1):1-27
This paper addresses three questions: (1) How big is lifetime employment in Japan? (2) How unique is it? and (3) How is it changing? Through the use of multiple data sets and methods, I find that no more than 20% of workers in Japan are likely to be employed under informal lifetime employment contracts, a far smaller percentage than has been reported. Job mobility remains considerably lower in Japan than in other advanced economies (particularly the US). Evidence regarding changes in lifetime employment is mixed. The share of workers in the core is declining, but the probability of job separations has remained stable for those who are already in the system. There is also evidence that the economic stagnation of the 1990s disproportionately affected females and younger workers. 相似文献