STABILITY OF THE UTILITY MAXIMIZATION PROBLEM WITH RANDOM ENDOWMENT IN INCOMPLETE MARKETS

We perform a stability analysis for the utility maximization problem in a general semimartingale model where both liquid and illiquid assets (random endowments) are present. Small misspecifications of preferences (as modeled via expected utility), as well as views of the world or the market model (as modeled via subjective probabilities) are considered. Simple sufficient conditions are given for the problem to be well posed, in the sense that the optimal wealth and the marginal utility‐based prices are continuous functionals of preferences and probabilistic views.     

A Comparison of Two Quadratic Approaches to Hedging in Incomplete Markets

This paper provides comparative theoretical and numerical results on risks, values, and hedging strategies for local risk-minimization versus mean-variance hedging in a class of stochastic volatility models. We explain the theory for both hedging approaches in a general framework, specialize to a Markovian situation, and analyze in detail variants of the well-known Heston (1993) and Stein and Stein (1991) stochastic volatility models. Numerical results are obtained mainly by PDE and simulation methods. In addition, we take special care to check that all of our examples do satisfy the conditions required by the general theory.     

Equilibrium with Default and Endogenous Collateral

We study a two‐period general equilibrium model with incomplete asset markets and default. We make collateral endogenous by allowing each seller of assets to fix the level of collateral. Sellers are required to provide collateral whose first‐period value, per unit of asset, exceeds the asset price by an arbitrarily small amount. Moreover, borrowers are also required to be fully covered by the purchase, in the first period, of state‐by‐state default insurance. These insurance contracts are offered by lenders. The insurance cost or revenue is a linear charge and plays the role of a spread penalizing borrowers who will incur in default and benefiting lenders who will suffer default. Under these assumptions, equilibrium always exists.     

The employee brand: Is yours an all-star?

In this article, a typology is presented which will help organizations better reflect the brand image they desire. The assisting typology is based on the extent to which employees know and understand the organization's mission, values, and desired brand image, and the degree to which they perceive their psychological contracts with the organization as being honored. Organizations can be classified as all-stars, rookies, injured reserves, or strike-out kings, based on the characteristics of a preponderance of their employees. As categorized, rookie organizations cannot deliver the desired brand image because most of their employees lack the knowledge and understanding to do so. Injured reserve organizations, on the other hand, cannot achieve the same because firm employees perceive their psychological contracts with the organization as having been violated, which renders the individuals unwilling and unmotivated. For their part, strike-out king organizations share rookie and injured reserve organizations' worst characteristics. Finally, and conversely, all-star organizations consistently deliver the desired brand image to others because their employees are both able and motivated to do so. To help firms attain this highly desired status, specific guidelines are presented herein which may help organizations become “all-stars” in their own right.     

Cooperatives, regulation and competition in Norwegian agriculture

This article analyses the efficiency of current market regulations and market structure in Norwegian agriculture. Based on their potential to coordinate farmers' supplies, large marketing cooperatives are assigned a market regulation role. However, market prices frequently tend to fall below target prices, spurring costly additional market regulations. This is not necessarily a result of inefficient coordination by the cooperative. Using a mixed market model, the study shows that over production may be explained by the competition between marketing cooperatives and investor-owned wholesalers (IOW), typically weakening the cooperatives' ability to coordinate market supply. This conclusion is robust over a variety of IOW contracts. However, to what extent competition is to blame, depends on the target price level and the contract structure of the IOW. Moreover, it is shown that current market interventions to remove excess supplies may induce further incentives to increase production.     

Perceived trust in contractual channel dyads: an exploratory investigation of Finnish food retailers

Distributor firms have found long-term contracting an effective means of gaining competitive advantage. To realize these benefits, the alliance should involve trusting others. However, contracts can also be one-sided rather than reciprocal, favouring the larger business partner. Should trust develop naturally where there are formal contracts defining the terms of the relationship? And what inducements should a supplier take to gain retailers' trust? The trade-off is further complicated when the retailers operate in a small market with few suppliers and high barriers to entry. This study focuses on these questions. We use original field data from Finnish food retailers who have signed a written agreement with their focal wholesaler. We find that maintaining autonomy increases trust in the relationship. We also find that regular communication in the dyad and balance between perceived rewards and contributions are associated with higher levels of trust. In turn, intrachannel competition strongly reduces retailers' trust in the dyad.     

A Conceptualization of the Employee Branding Process

SUMMARY

We propose a conceptual model of the employee branding process in which the employee brand image is driven by the messages employees receive and the mechanisms within employees' psyches that enable them to make sense of those messages. The model identifies various sources through which messages are delivered and describes the contributions of those sources to the employee branding process. The psychological contract is identified as a perceptual mechanism central to the employee branding process. The model specifies the consequences of the employee branding process and describes a feedback loop through which managers can monitor the process.     

The role of implicit contracts: Building public works in the 1840s in Portugal

This article studies financial schemes for building public works in the 1840s. The study of the Portuguese case clearly illustrates the importance of implicit contracts with governments in peripheral Europe, shedding light on solutions for financing the provision of public goods. Building roads and railways seems to have been the fruit of an implicit contract behind the tobacco monopoly in a country involved in social turmoil and civil wars. Reputation effects are called to explain the relevant range of the partners' negotiations, to reject the traditional historiography based on wrong management and speculation in a period of savage capitalism.     

创新、知识产权与新经济

创新与知识产权对新经济发展有重要作用,以新制度经济学的产权理论分析知识产权的排他性权利实质及特征,论述了知识产权在我国的现状,以契约理论回答了如何实现知识产权产业化的问题。     

Renters,landlords, and farmland stewardship

Are farmers better stewards of the land they own than the land they rent from others? We answer this question using a data set that identifies Ontario farmers’ conservation practices on their own land as well as the land they rent. Using a fixed‐effects regression approach, we find that the role of tenure varies for different types of conservation practices. Farmers were found to be just as likely to adopt a machinery‐related practice such as conservation tillage on their rented land as that land which they own. On the other hand, farmers were found to be less likely to adopt site‐specific conservation practices such as planting cover crops on rented land. However, this effect diminishes as the expected length of the rental relationship increases when the landlord has a farming background.