新形势下自主创业教育的问题及对策初探

创业教育被联合国教科文组织称为学习的＂第三本护照＂,与学术教育、职业教育具有同等重要的地位。但客观审视,我国高职院校创业教育还未形成相对成熟和切实实用的理论体系和实践体系,指出目前高职院校实施创业教育存在的问题,并对我国高职院校实施创业教育的问题进行系统研究。     

The Positive Effects of the Schengen Agreement on European Trade

Enacted in 1985, the Schengen Agreement is widely heralded as both a symbol and major institutional advancement of the European project. By eliminating passport requirements for workers, the compact ostensibly produces gains from travel, ease of market access and economies of scale. Yet despite these optimistic predictions, scholars know little about the actual effects of Schengen on trade. We fill this void by identifying why labour mobility should expand the cross‐country exchange of goods and services and then test our theory with data from Europe spanning the period 1980 to 2011. We argue that labour mobility resulting from Schengen yields positive effects on trade by increasing demand for foreign goods, improving awareness of low‐cost producers abroad and lowering the risks associated with buying and selling outside the country. Using the gravity model of trade, we show empirically that Schengen membership makes European states more robust trading partners.     

The effect of trademark breadth on IPO valuation and post-IPO performance: an empirical investigation of 1510 European IPOs

Trademarks differ in breadth and can cover a wide range of categories of goods and services. We draw on real options theory and argue that greater trademark breadth constitutes a valuable real option that is associated with higher firm valuation and performance. We analyze a sample of 1510 firms that went public in Europe between 2002 and 2015 and find a positive effect of trademark breadth on initial public offering (IPO) valuation and post-IPO performance. We implement a contingency analysis to contrast real options and signaling theory and find stronger support for the real options perspective.     

股票期权计划及其在我国的应用

本文介绍了股票期权计划作为一种新的长期激励制度的特征和实施的内容,并从人力资本产权理论、团队生产理论、风险理论和契约理论四方面阐述了股票期权计划的理论基础,进而结合我国的具体实际分析了在中国实施股票期权计划面临的一些限制性因素,从而就我国实行股票期权计划提出了一些建议。     

ASSET PRICE BUBBLES IN INCOMPLETE MARKETS*

This paper studies asset price bubbles in a continuous time model using the local martingale framework. Providing careful definitions of the asset's market and fundamental price, we characterize all possible price bubbles in an incomplete market satisfying the “no free lunch with vanishing risk (NFLVR)” and “no dominance” assumptions. We show that the two leading models for bubbles as either charges or as strict local martingales, respectively, are equivalent. We propose a new theory for bubble birth that involves a nontrivial modification of the classical martingale pricing framework. This modification involves the market exhibiting different local martingale measures across time—a possibility not previously explored within the classical theory. Finally, we investigate the pricing of derivative securities in the presence of asset price bubbles, and we show that: (i) European put options can have no bubbles; (ii) European call options and discounted forward prices have bubbles whose magnitudes are related to the asset's price bubble; (iii) with no dividends, American call options are not exercised early; (iv) European put‐call parity in market prices must always hold, regardless of bubbles; and (v) futures price bubbles can exist and they are independent of the underlying asset's price bubble. Many of these results stand in contrast to those of the classical theory. We propose, but do not implement, some new tests for the existence of asset price bubbles using derivative securities.     

Real options and the theory of foreign direct investment

We extend applications of real options theory to foreign direct investment (FDI) research regarding choice of location and choice of market entry mode under uncertainty. Our study is motivated by the regional configuration of multinational enterprises (MNEs), as well as observed deviations from the stages model in internationalization theory. We shed light on these issues using real option modeling and computer simulations. The results suggest that from the standpoint of pursuing business opportunities and generating real options, building a subsidiary in a nonhome region could be more beneficial than in a home region. However, high option exercise cost may reduce the option value of a nonhome-region location. Our models also imply that choice of entry mode depends on the magnitude (high vs. low) and the type (exogenous vs. endogenous) of uncertainty. When uncertainty is high and endogenous, MNEs may prefer high-commitment entry modes because they contribute to the reduction of uncertainty and provide valuable growth options.     

Permissibility and use of options for hedging purposes in Islamic Finance

The debate concerning permissibility and use of options in Islamic finance is ongoing, and the issue is far from settled. Current analyses on this issue appear to focus on taking of unnecessary risks ( gharar), the perceived lack of a physical asset in an options contract, and the possibility of exploitation of the ignorant. To the extent that these factors are involved, options are not permitted under Islamic teachings (the Shariah). In this article, we investigate whether options may be permitted for hedging purposes in Islamic finance. We use equity options as an example in our analysis. After providing a brief overview of options markets, we review the existing literature and critically examine other work such as the religious decrees (fatwas). We also provide two examples, one each of call and put options, to illustrate the managerial issue of use of options for hedging purposes. Our analysis shows that options may be permitted for hedging purposes in Islamic finance as long as the underlying economic activities are themselves permissible (halal) from an Islamic point of view. The analysis also indicates that one of the key issues is related to unnecessary risk taking. The avoidance or reduction of such risks in hedging situations is largely dependent on the settlement and clearing function of the exchanges trading options, which effectively provides a guarantee of delivery. Mutual consent for entering into or canceling contracts and the issue of intangible assets also play a role in determining if options are permissible under the Shariah. We conclude the article by urging experts of Islamic jurisprudence to understand the theory and mechanics of options and use group ijitihad (consensus opinion of Islamic scholars) in conjunction with academics and experts in financial markets and instruments on this vital issue in contemporary finance for the benefit of the Islamic world as well as those trading with the Islamic world. © 2006 Wiley Periodicals, Inc.     

亏损上市公司的价值评估:理论综述与启示

国外对亏损上市公司的价值进行评估涉及多种理论,其中放弃期权理论、调整期权理论、违约期权理论更加注重考虑上市公司发生亏损后投资者可能采取的各种行为;而销售定价理论和会计谨慎理论则主要考虑的是上市公司发生亏损的原因。这里提出应该从各种预期因素的角度去探讨亏损上市公司的完整价值。     

Risk Management,Real Options,Corporate Social Responsibility

The relationship of corporate social responsibility to risk management has been treated sporadically in the business society literature. Using real options theory, I develop the notion of corporate social responsibility as a real option its implications for risk management. Real options theory allows for a strategic view of corporate social responsibility. Specifically, real options theory suggests that corporate social responsibility should be negatively related to the firm’s ex ante downside business risk.     

国际直接投资的新思维——实物期权思想的融入

全球化经济时代的到来 ,为经济理论提出了新课题 ,FDI作为跨国经营的主要形式成为研究重点。实物期权理论在评估高风险、高灵活性的投资项目时有不可替代的作用 ,而FDI恰恰属于此类投资项目。将实物期权思想融入FDI理论 ,不仅解释了FDI近来快速增长的现象 ,也为FDI理论开辟了新的研究领域     

实物期权理论应用在公司理财中的先进性

近来财务理论的飞速发展大部分归功于实物期权理论于公司理财中的应用 ,实物期权能发挥如此大的作用一定有它的先进之处。但是由于数学原理的生涩难懂 ,给各界人士理解并探讨期权理论设置了障碍。目前广泛使用的传统公司理财工具 -现金流贴现方法有它的局限性 ,通过对实物期权的历史和原理的阐述 ,加以通俗易懂的例子 ,解释了它在财务理论中的突破性进步。     

Valuation of brand equity and retailer growth strategies using real options

In marketing, significant attention has been devoted to the study of drivers and outcomes of strategic flexibility drawing on real options theory. However, research that quantifies the specific value of flexibility reflected in a bundle of strategic real options is lacking. To remedy this gap, we develop a real options-based framework that takes account of brand expansion and extension options to value brand equity and retailer growth strategies. We show how to value the bundle of strategic real options associated with a flexible marketing strategic vision and how to assess the growth strategies related to the corporate brand of an international retailer. We apply our method to estimating the brand equity of Starbucks both under growth and adversity conditions. The results reveal that our method can more reliably incorporate the growth potential of the brand under uncertainty conditions. Comparisons with other brand valuation approaches are discussed. Our study helps clarify the links among management’s strategic plans, brand-based marketing strategies and share price, and allows to better monitor the impact of retailer strategic choices on long-term brand equity value.     

马化腾 QQ成功的秘密

他创造了庞大的虚拟家园,海角天涯变成咫尺之间;他营造的世界,年轻的心态是唯一的通行证;他用那个在电脑右下角频繁闪动的小企鹅提醒投资者:“玩”也是生产力     

再装期权定价及其在经理激励中的应用

期权及其定价理论是目前金融管理,金融工程研究的前沿与热点问题。在标的资产的价格服从指数O-U过程模型假设下,运用Girsanov定理获得了该过程的唯一等价鞅测度。借助期权定价的鞅方法,得出了再装期权定价模型的定价公式。同时,将此模型用于经理股票期权激励中并进行了分析。     

Stochastic Volatility Corrections for Interest Rate Derivatives

We study simple models of short rates such as the Vasicek or CIR models, and compute corrections that come from the presence of fast mean-reverting stochastic volatility. We show how these small corrections can affect the shape of the term structure of interest rates giving a simple and efficient calibration tool. This is used to price other derivatives such as bond options. The analysis extends the asymptotic method developed for equity derivatives in Fouque, Papanicolaou, and Sircar (2000b) . The assumptions and effectiveness of the theory are tested on yield curve data.     

Investment Decisions for Retirement Savings

We conducted a choice experiment to investigate whether retirement savers follow simple portfolio theory when choosing investments. We modeled experimental survey data on 693 participants using a scale-adjusted version of the latent class choice model. Results show that underlying variability in response was explained by age and “risk profile” score and that preferences varied with income and age. Younger individuals were conventionally risk averse, but older, higher-income individuals may react positively to both higher returns and increasing risk, when risk is presented as widening ranges of possible outcomes. Respondents tended to choose among a few similar investment options.     

The Valuation of American Options on Multiple Assets

In this paper we provide valuation formulas for several types of American options on two or more assets. Our contribution is twofold. First, we characterize the optimal exercise regions and provide valuation formulas for a number of American option contracts on multiple underlying assets with convex payoff functions. Examples include options on the maximum of two assets, dual strike options, spread options, exchange options, options on the product and powers of the product, and options on the arithmetic average of two assets. Second, we derive results for American option contracts with nonconvex payoffs, such as American capped exchange options. For this option we explicitly identify the optimal exercise boundary and provide a decomposition of the price in terms of a capped exchange option with automatic exercise at the cap and an early exercise premium involving the benefits of exercising prior to reaching the cap. Besides generalizing the current literature on American option valuation our analysis has implications for the theory of investment under uncertainty. A specialization of one of our models also provides a new representation formula for an American capped option on a single underlying asset.     

Quality-based Price Discrimination: Evidence from Internet Retailers’ Shipping Options

This paper tests various implications of quality-based price discrimination theory in the context of internet book retailers’ shipping menus. Many internet retailers create quality variants of a homogeneous good by bundling it with several shipping options that differ by delivery time. This practice can allow retailers to extract further surplus from consumers through quality-based price discrimination. We find that the design of shipping menus offered by large retailers is consistent with main implications of quality-based price discrimination theory. Fringe sellers, however, do not appear to engage in price discrimination based on quality.     

ON ARBITRAGE AND DUALITY UNDER MODEL UNCERTAINTY AND PORTFOLIO CONSTRAINTS

We consider the fundamental theorem of asset pricing (FTAP) and the hedging prices of options under nondominated model uncertainty and portfolio constraints in discrete time. We first show that no arbitrage holds if and only if there exists some family of probability measures such that any admissible portfolio value process is a local super‐martingale under these measures. We also get the nondominated optional decomposition with constraints. From this decomposition, we obtain the duality of the super‐hedging prices of European options, as well as the sub‐ and super‐hedging prices of American options. Finally, we get the FTAP and the duality of super‐hedging prices in a market where stocks are traded dynamically and options are traded statically.     

THE EIGENFUNCTION EXPANSION METHOD IN MULTI-FACTOR QUADRATIC TERM STRUCTURE MODELS

We propose the eigenfunction expansion method for pricing options in quadratic term structure models. The eigenvalues, eigenfunctions, and adjoint functions are calculated using elements of the representation theory of Lie algebras not only in the self-adjoint case, but in non-self-adjoint case as well; the eigenfunctions and adjoint functions are expressed in terms of Hermite polynomials. We demonstrate that the method is efficient for pricing caps, floors, and swaptions, if time to maturity is 1 year or more. We also consider subordination of the same class of models, and show that in the framework of the eigenfunction expansion approach, the subordinated models are (almost) as simple as pure Gaussian models. We study the dependence of Black implied volatilities and option prices on the type of non-Gaussian innovations.