THE EFFECT OF INVESTMENT IN INTERORGANIZATIONAL INFORMATION TECHNOLOGY IN A RETAIL SUPPLY CHAIN

The primary purpose of this research was to investigate the effect of investment in information technology in a supply chain. The results of that investigation are presented by focusing on an empirically tested supply chain relationship model containing both behavioral and operational constructs. The four behavioral constructs represented in the model are relationship trust, relationship commitment, relationship dependence, and long‐term relationship orientation. The four operational constructs represented in the model are retailer investment in interorganizational information technology, perceived supplier investment in interorganizational information technology, logistics efficiency, and logistics effectiveness. Among other findings, the results of the investigation found that perceived supplier investment in interorganizational information technology has a significant and positive effect on logistics efficiency.     

EXISTENCE OF AN EQUILIBRIUM WITH DISCONTINUOUS PRICES, ASYMMETRIC INFORMATION, AND NONTRIVIAL INITIAL σ-FIELDS

In this paper, we solve the problems of optimization and equilibrium on a continuous-time financial market with discontinuous prices, in which agents have different random endowments and different information on the structure and future behavior of the prices. Our purpose is to go over and to extend the work of Pikovsky and Karatzas (1996) by using the theory developed by Amendinger (2000) about martingale representation theorems for initially enlarged filtrations, and to generalize the results in the case of discontinuous prices.     

THE GENERAL STRUCTURE OF OPTIMAL INVESTMENT AND CONSUMPTION WITH SMALL TRANSACTION COSTS

We investigate the general structure of optimal investment and consumption with small proportional transaction costs. For a safe asset and a risky asset with general continuous dynamics, traded with random and time‐varying but small transaction costs, we derive simple formal asymptotics for the optimal policy and welfare. These reveal the roles of the investors' preferences as well as the market and cost dynamics, and also lead to a fully dynamic model for the implied trading volume. In frictionless models that can be solved in closed form, explicit formulas for the leading‐order corrections due to small transaction costs are obtained.     

UNIVERSAL INVESTMENT IN MARKETS WITH TRANSACTION COSTS

In this paper we investigate growth optimal investment in two-asset discrete-time markets with proportional transaction costs and no distributional assumptions on the market return sequences. We construct a policy with growth rate at least as large as any interval policy. Since interval policies are ε-optimal for independent and identically distributed (i.i.d.) markets ( Iyengar 2002 ), it follows that our policy when employed in an i.i.d. market is able to "learn" the optimal interval policy and achieve growth optimality; in other words, it is a universal growth optimal policy for i.i.d. markets.     

跨国公司“撤资行为”概说

改革开放30年来,跨国公司在我国境内所面临的投资和竞争环境发生了显著变化。一方面,面对更加开放的中国市场环境,跨国公司正在更加全面地进入中国;另～方面,由于中国国内以及国际形势的变化,许多在华企业逐渐开始从中国撤资。比如2008年1月,位于山东某韩资企业就上演了40名管理人员“半夜大逃亡”事件。究竟是什么原因导致越来越多的跨国公司的撤资行为？撤资对中国有什么影响,这将给我们带来哪些启示？     

OPTIMAL INVESTMENT WITH INTERMEDIATE CONSUMPTION AND RANDOM ENDOWMENT

We consider an optimal investment problem with intermediate consumption and random endowment, in an incomplete semimartingale model of the financial market. We establish the key assertions of the utility maximization theory, assuming that both primal and dual value functions are finite in the interiors of their domains and that the random endowment at maturity can be dominated by the terminal value of a self‐financing wealth process. In order to facilitate the verification of these conditions, we present alternative, but equivalent conditions, under which the conclusions of the theory hold.     

LIQUIDATION OF AN INDIVISIBLE ASSET WITH INDEPENDENT INVESTMENT

We provide an extension of the explicit solution of a mixed optimal stopping–optimal stochastic control problem introduced by Henderson and Hobson. The problem examines whether the optimal investment problem on a local martingale financial market is affected by the optimal liquidation of an independent indivisible asset. The indivisible asset process is defined by a homogeneous scalar stochastic differential equation, and the investor's preferences are defined by a general expected utility function. The value function is obtained in explicit form, and we prove the existence of an optimal stopping–investment strategy characterized as the limit of an explicit maximizing strategy. Our approach is based on the standard dynamic programming approach.     

OPTIMAL INVESTMENT WITH AN UNBOUNDED RANDOM ENDOWMENT AND UTILITY-BASED PRICING

This paper studies the problem of maximizing the expected utility of terminal wealth for a financial agent with an unbounded random endowment, and with a utility function which supports both positive and negative wealth. We prove the existence of an optimal trading strategy within a class of permissible strategies—those strategies whose wealth process is a super-martingale under all pricing measures with finite relative entropy. We give necessary and sufficient conditions for the absence of utility-based arbitrage, and for the existence of a solution to the primal problem. We consider two utility-based methods which can be used to price contingent claims. Firstly we investigate marginal utility-based price processes (MUBPP's). We show that such processes can be characterized as local martingales under the normalized optimal dual measure for the utility maximizing investor. Finally, we present some new results on utility indifference prices, including continuity properties and volume asymptotics for the case of a general utility function, unbounded endowment and unbounded contingent claims.     

DUALITY IN OPTIMAL INVESTMENT AND CONSUMPTION PROBLEMS WITH MARKET FRICTIONS

In the style of Rogers (2001) , we give a unified method for finding the dual problem in a given model by stating the problem as an unconstrained Lagrangian problem. In a theoretical part we prove our main theorem, Theorem 3.1, which shows that under a number of conditions the value of the dual and primal problems is equal. The theoretical setting is sufficiently general to be applied to a large number of examples including models with transaction costs, such as Cvitanic and Karatzas (1996) (which could not be covered by the setting in Rogers [2001] ). To apply the general result one has to verify the assumptions of Theorem 3.1 for each concrete example. We show how the method applies for two examples, first Cuoco and Liu (1992) and second Cvitanic and Karatzas (1996) .     

委托—代理投资与金融危机的形成

回顾 2 0世纪 80年代以来发生的主要金融危机 ,作者认为委托—代理投资及其引发的道德风险是导致资产泡沫形成、膨胀和破灭并最终引发金融危机的重要原因 ,最后给出相关结论。     

我国外商并购投资管理中的几个问题

随着我国对外开放程度不断提高，外商在华投资领域进一步拓宽，外商直接投资额连创新高。2002年外商在华实际直接投资额突破500亿美元大关，达到527．43美元；2004年突破600亿美元大关，达到606．30亿美元；2005年又突破700亿美元大关，达到724．06亿美元。截至2006年6月底，全国已累计批准设立外商投资企业572692家，实际利用外资存量已达6508．53亿美元。与其他发展中国家相比，中国所吸收的外商直接投资遥遥领先。     

浅析市场化招商引资

市场化招商引资将成为新时期的一种理想招商引资模式,因此,有必要对这一模式进行研究。本文对它的涵义和意义进行了分析,并提出了实施市场化招商引资的具体建议,认为,一方面要重新界定政府在招商引资中的作用和分工,另一方面要建立有效的市场化招商引资企业组织和制度。     

THE HEX GAME THEOREM AND THE ARROW IMPOSSIBILITY THEOREM: THE CASE OF WEAK ORDERS

The Arrow impossibility theorem when individual preferences are weak orders is equivalent to the HEX game theorem. Because Gale showed that the Brouwer fixed point theorem is equivalent to the HEX game theorem, this paper indirectly shows the equivalence of the Brouwer fixed point theorem and the Arrow impossibility theorem. Chichilnisky showed the equivalence of her impossibility theorem and the Brouwer fixed point theorem, and Baryshnikov showed that the impossibility theorem by Chichilnisky and the Arrow impossibility theorem are very similar. Thus, Chichilnisky and Baryshnikov are precedents for the result—linking the Arrow impossibility theorem to a fixed point theorem.     

论我国外商投资超国民待遇的终结

引进外资是我国改革开放政策的一项重要内容,基于开放之初我国资金的极度稀缺,为了实现我国的社会经济政策,多而快地吸引外资,我国对外资实行了多种优惠政策,即对外资实行超国民待遇。超国民待遇涉及我国社会经济生活的方方面面,它起到了相当积极的、不可替代的作用;同时,我国长期执行的外资优惠政策对我国经济发展的诸多全局性不利影响也逐步显现。在中国加入TWO后过渡期的今天,我们有理由、有条件逐步取消超国民待遇,当然,在特定领域仍需保持适度的超国民待遇。     

网络游戏

韩国SK电讯投资网游商趣味第一，金额达3000万美元 ——韩国SK电讯5月15日宣布，与国内网游商趣味第一合作，进入中国网游市场。据了解，默电讯将对趣味第一注资3000亿美元，分三年内完成。趣味第一成立于2006年8月，2007年12月其第一款网游《纸客帝国》公测。SK电讯目前是中国联通第二大股东，今年5月成功注资太合麦田。     

MEAN–VARIANCE HEDGING AND OPTIMAL INVESTMENT IN HESTON'S MODEL WITH CORRELATION

This paper solves the mean–variance hedging problem in Heston's model with a stochastic opportunity set moving systematically with the volatility of stock returns. We allow for correlation between stock returns and their volatility (so-called leverage effect). Our contribution is threefold: using a new concept of opportunity-neutral measure we present a simplified strategy for computing a candidate solution in the correlated case. We then go on to show that this candidate generates the true variance-optimal martingale measure; this step seems to be partially missing in the literature. Finally, we derive formulas for the hedging strategy and the hedging error.     

INVESTMENT

China's 2009 public investment may exceed budget China's 2009 public investment expenditure may go beyond its RMB 908 billion(US＄62.02 billion)budget,the Ministry of Finance said on December 24. Increased spending on affordable housing,energy conservation and emissions cuts as well as technology innovation led to the possible over budget,said Zhang Shaochun,vice minister of finance,at a press conference.