共查询到20条相似文献,搜索用时 46 毫秒
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In this paper some factors influencing the profits of government from city land, including urban planning, land translation and tax & fee of land etc. The authors also give some suggestions & measures for raising the profits from city land for the government. 相似文献
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This article is based on the existence of an arbitrage about a portfolio in an disequilbrium market under the supposition of the stochastic market. The authors defined the T option priee equilibrium price, and illuminated these definitions at first. With the knowledge of stochastic analysis, it is demonstrated that the price of European put option equals its callo ption. They both equal equilibrium price. In addition, under the same supposition, it is discussed that the choice of hedging trade planning, got the formula of hedging trading.A example to show how to use the formula. 相似文献
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This article has discussed the problem of an arbitrage about an portfolio in an unequilimarket and got a determinable theorem about existence of an arbitrage about an portfolio. According to this theorem,an arbitrage about portfolio is not existing if there exists a respect martignal measure.A structural result about existence of arbitrage about an portfolio in a market is gotten. All results represent the existence of an arbitrage about an portfolio is related closely to the type of market. 相似文献
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According to the security investment theory of Markowitz,this paper presents aCaculation method of portfolio investment under the risk minimization,and some mathematic expres-sions of the efficient frontier for portfolio investment are conducted.Based on these,the efficientfrontier is proved as a parabola,and a practical caculation process is given. 相似文献
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We point out the shortage of optimal portfolio model which was suggested by Markowitz in 1952, this theory has been less useful in practice because one must know indifference curves of investors. We propose safety first criteria and get optimal portfolio model under this criteria. Two methods are given to do with probability condition, and we obtain optimal portfolio. At last, we give safety first index to portfolio performance management. 相似文献
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Urban Growth Boundaries and Betterment: Rent‐Seeking by Landowners on Melbourne's Expanding Urban Fringe 下载免费PDF全文
Elizabeth Jean Taylor 《Growth and change》2016,47(2):259-275
Melbourne's Urban Growth Boundary (UGB) was legislated in 2002 and expanded substantially in 2010. Although based on strategic planning goals, UGBs have the capacity to influence land and housing markets. Landowners on the rural–urban fringe are a stakeholder group directly impacted by UGB policy, with multiple interests in containment policies and any land‐value effects. Following the 2010 expansion, substantial windfall profits to “instant millionaire” Melbourne landowners were openly reported. This paper critically interprets claims made by landowners in 264 public submissions responding to the proposed UGB expansion, and to an accompanying new policy instrument, the Growth Areas Infrastructure Contribution (GAIC). The GAIC was, in effect, a hypothecated tax on betterment expected to result from the UGB shift. Landowners commonly expressed fears that the UGB shift would not result in claimed value increases. On this basis, the GAIC was revised such that it is—at least in intention—a system wherein the tax is to be paid by housing developers and passed forward to homebuyers. The paper argues that the series of changes to the UGB and GAIC, including the modified “purchaser pays” system, may be understood as a response to rent‐seeking policy pressures from existing landowners as “insiders.” Although the unpopularity of the GAIC with landowners might have been anticipated, the outcome appears to legitimise their misinterpretation of the premise of development gain. A broader implication is that rent‐seeking behaviour by existing property owners can determine whether and how strategic planning policies are implemented. 相似文献
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The strategies of portfolio insurance are introduced according to its principles and design thinking.The(authors) give the simple mathematical models and practical processes of option-based portfolio insurance(OBPI),constant mix(CM),constant proportion portfolio insurance(CPPI),and time-invariant portfolio protection(TIPP),and use risky assets containing 180 index's stocks of Shang-hai Stock Exchange and risky-free assets containing bonds to form portfolio to do empirical simulating.Based on the results,they analyze the above strategies comparatively,gives the(related) investment suggestion,and shows how to avoid risk without restriction on profit. 相似文献
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XIANG Wei-min 《保鲜与加工》2004,(7):152-154
The high-speed development demands new real estate investment theory. Using the experiences of the Western developed countries for reference in property investment and modern portfolio investment theory, the paper introduces the conception of systematic and unsystematic risk with the centre of risk and profit. Consequently, the model of real estate base on least risk and anticipated profit is studied in the discussion of its concerned hypothesis and determining the concerned parameters. With living example analysis, we reach the conclusion that portfolio investment risk is smaller than single investment if the investor adjusts the tactics of portfolio investment. 相似文献
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As specializing third party logistics, logistics companies do not participate in the goods' dealing. They get profits from serving customs. However ,they hunt for not only general profits, but integrated profits. This article analyses the source, character and allotment of integrated profits from the point of view of economics. At last, the article points out that the logistics companies should progress to logistics integrated logistics providers. 相似文献
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VaR model is one of methods to measure and control market risk.This paper analyzes VaR model principle and its main factors.According to function relation,the relationship between the portfolio value and its market risk factors are sorted in two kinds: linear and nonlinear.The method of calculating the VaR is put forward.Finally,the article analyzes the application of VaR model to portfolio,risk control,information disclosure and financial supervison. 相似文献
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Liu Xibiao Yi Hengyun 《保鲜与加工》1998,(4)
This paper proves some properties of the efficient margin in portfolio combinatorial investment and presents a methematical model for calculating the optimal weighted vector of portfolio combinatorial investment 相似文献
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With the theory of stochastic differential equation, the authors discuss a problem of a class of risk investment portfolio with stochastic character. With the selection of appropriate utility function and combines the Hamilton-Jacobi-Bellman equation, under the assumption that an optimal portfolio exists, and by using the Homologous Lagrangian function, some quantitative results of this risk optimal investment portfolio are given. With these quantitative results, some qualitative results are got. These results concord with the results of the theory of risk investment. 相似文献
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PU Xing-cheng~ 《保鲜与加工》2003,(12):119-121
The simple portfolio investment model is given, with the HJB equation. The optimal portfolio investment problem is discussed under some given supposition, the quantitative relations are gotten between the investment strategies and riskless investment income rate and risk investment income rate are gotten. And with the quantitative relations, we study the qualitative relations between the investment strategies and riskless investment income rate and risk investment income rate. This also accounts for the effect of the falling interest rate of RMB on the national economy. 相似文献
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面向协作定价的上海蔬菜供应链整合研究 总被引:1,自引:1,他引:0
通过对上海地区蔬菜供应链结构的调研,分析了几种典型蔬菜供应链结构的优势和存在的问题。以批发市场占主导的上海蔬菜供应链为例,从供应链整合中最核心的协作定价策略出发,运用二层规划模型对该供应链进行协作定价的决策分析,以期确定能实现供应链整体收益和各主体收益稳定增长的合理价格,并提出了能保护农民和市民利益的理想蔬菜供应链结构。 相似文献
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ZHANG Ying - bao 《保鲜与加工》2006,(4):114-117
The value-at-risk(VaR) model is a statistical model to estimate and control financial risk,and used to measure the most probable loss on the next deal stage of financial asset portfolio.Based on the principle of the value-at-risk,in this paper the value-at-risk is to be applied to the risk evaluation of construction project.Assuming the sub-project prices abide by the BQ model are random variable which conform to normal distribution,this paper has built up the portfolio of project according to biding and quoted price of construction project,and adopted the variance-covariance method to measure the value-at-risk of the biding and quoted price in order to provide a feasible risk analysis tool for the evaluation of construction project bidding. 相似文献
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On the basis of introducing some fundamental theories and computational methods of portfolio investment, this paper derives a decision model for searching optimal portfolio with the utility function. Then,after comparing the new model with the conditional extreme optimization model,which has been usually considered by people,the result shows the new model would be more efficient under certain conditions. 相似文献