倾销与比较优势

简单贸易模型的一个重要假设是市场完全竞争，并且贸易是源于比较优势。然而，现实中很少存在完全竞争的市场，不完全竞争市场使传统的贸易模型呈现出有趣的结果。这引起关注的一方面是不完全竞争企业在不同市场上给出不同的价格，即通常所说的“价格歧视”。在国际贸易中，最基本的价格歧视方式是“倾销”，即对于同一商品，出口商在国际市场上价格低于国内市场上的价格。如果国内企业是完全竞争的，并且在国内市场上以边际成本价格卖出，倾销就是指在国外市场上已低于边际成本价格出售。在多数的贸易模型中，商品按进口品和出口品分组，货币被认为是交换的中性媒介。对基于比较优势进行贸易的倾销的指控，主要是由于运用了与贸易不联系的汇率。我们认为，根据汇率来衡量基于比较优势的贸易获利在逻辑上是错误的，因为这种衡量往往导致明显的倾销，如果汇率市场是均衡的话。恰当的衡量方法是以贸易为基础的影子汇率。进一步来说，贸易障碍使得外汇交换和贸易不完全替代，使得汇率按接受到的价格相互高估。我们认为，只有在出口与基于比较优势的利润最大化不一致时，才能说明是倾销。     

Optimal risk sharing with background risk

This paper examines qualitative properties of efficient insurance contracts in the presence of background risk. In order to get results for all strictly risk-averse expected utility maximizers, the concept of “stochastic increasingness” is used. Different assumptions on the stochastic dependence between the insurable and uninsurable risk lead to different qualitative properties of the efficient contracts. The new results obtained under hypotheses of dependent risks are compared to classical results in the absence of background risk or to the case of independent risks. The theory is further generalized to nonexpected utility maximizers.     

Pareto efficient insurance contracts when the insurer's cost function is discontinuous

Summary. We consider the problem of efficient insurance contracts when the cost structure includes a fixed cost per claim. We prove existence of efficient insurance contracts and that the indemnity function in such contracts is non-decreasing in the damage. We further show that either there is no insurance, or the indemnity is positive for all losses, or efficient insurance contracts have a unique jump. We study variants of the model and provide a generalization to the case of non expected utilities. Our results are then applied to Townsend's model of deterministic auditing. Received: November 8, 2000; revised version: March 12, 2002 RID="*" ID="*" We are grateful to F. Salanié for pointing out an error in the previous version of the paper and for suggesting Proposition 6 to us. Correspondence to: R.-A. Dana     

Determinants and economic consequences of cash flow restatements

The FASB, PCAOB, SEC, and AICPA have all acknowledged that the accounting field needs to revisit the statement of cash flows (SCF). While the overall number of restatements has held steady over the past five years, the percentage of cash flow restatements (CFRs) has risen from 8.7% of all restatements in 2009 to 20.2% of all restatements in 2014. We examine the determinants of CFRs, investors’ differential beliefs about CFRs, and the information content of CFRs by focusing on abnormal trading volume and price reactions to CFRs. We then examine whether the guidance the SEC/AICPA published in early 2006 changed the information content of CFRs. Finally, since the proper classification within the SCF is a current regulatory issue, we examine whether classification shifting within the SCFs impacts the market. The market finds CFRs to be informative with some investor disagreement as shown by higher abnormal trading volume. We also find an incremental volume reaction to changes in operating cash flows after the SEC allowance period. While the market responds negatively to CFRs, we find that the market does not differentiate between whether classification shifting occurs or does not occur with the CFR. This study has implications for policymakers, auditors, and investors since it is one of the first to examine the capital market consequences of CFRs.     

The impact of knowledge spillovers and innovation on firm-performance: findings from the Balkans countries

This paper investigates factors affecting firm performance. Using data from Business Environment and Enterprise Performance Surveys (BEEPS 2013–2014), findings indicate that the following have a positive effect on firm performance: (i) innovative activities; (ii) knowledge spillovers; (iii) foreign ownership; and (iv) the proportion of skilled workers in the workforce. The paper therefore argues that innovation activities are endogenously related to firm performance, and that the performance of firms is influenced by knowledge spillovers and innovation activities, among other firm characteristics. The paper contributes to the literature by identifying spillovers and innovation activities as causal variables of firm performance—a novel approach to investigating knowledge spillovers and innovation activities.     

HRM and IR in multinational corporations in Denmark: uneasy bedfellows?

As multinational corporations operate in multiple countries, headquarters must take into account differences in local settings when seeking the means to coordinate and control subsidiaries. The local system of industrial relations sets the framework for what kind of human resource management a multinational corporation can implement. Yet another question is whether the still stronger multinationals can change the existing systems of industrial relations, directly or indirectly.

The paper analyzes four Danish enterprises over a 10-year period. This longitudinal study shows that none of the multinationals directly try to interfere in local industrial relations. However, by exercising their management prerogative in a way that differs from the Northern European tradition of industrial relations, they do influence the cooperation between employers and employees. In particular, the results show, that a shift from a stakeholder to a shareholder management style and an increased degree of HQ control have an effect on the whole cooperative atmosphere in each of the companies. In the long run, they may affect the collective bargaining system as such.     

An evolutionary approach to learning in a changing environment

The evolutionary fitness of the ability to learn a best response (at a cost) is explored in an environment where the underlying game changes stochastically over time. We provide a sufficient condition for asymptotic dominance by the learners. It does not require that the learners are the most fit type in any single state of the environment. We identify a necessary and sufficient condition that ensures the survival of the learners when learning costs are small. Last, we describe a medium-run phenomenon where the learners “spike”—their share temporarily rises and gets arbitrarily close to one following a regime shift.     

Understanding Basis Risk in Insurance Contracts

There is a tremendous amount of resources being tied up in litigation between insurance companies and policyholders over things like the extent of coverage for various loss scenarios or allegedly bad faith delays in settlement payments. The fact that policyholders formally dispute insurer coverage positions or claims payment strategies gives credibility to the idea that mismatches exist between what policyholders expect insurance policies to cover and what the insurance contracts actually provide as loss indemnification. This mismatch essentially represents insurance basis risk, the analysis of which can more accurately reflect the value and overall efficiency of insurance contracts and suggest factors that may influence policyholder dissatisfaction and consequently insurance contract disputes. This article takes a detailed look at insurance basis risk and finds that subjectivity plays a prominent role in its definition. Using Bayesian inference, it is shown how factors can affect the magnitude of insurance basis risk depending on the individual situation in which the mismatch between losses and coverage exists.     

Pareto efficiency for the concave order and multivariate comonotonicity

This paper studies efficient risk-sharing rules for the concave dominance order. For a univariate risk, it follows from a comonotone dominance principle, due to Landsberger and Meilijson (1994) [27], that efficiency is characterized by a comonotonicity condition. The goal of the paper is to generalize the comonotone dominance principle as well as the equivalence between efficiency and comonotonicity to the multidimensional case. The multivariate case is more involved (in particular because there is no immediate extension of the notion of comonotonicity), and it is addressed by using techniques from convex duality and optimal transportation.     

Cost-effective species conservation in exurban communities: A spatial analysis

Exurban areas have increasingly become zones of conflict as conservation and development compete for the same finite land resources. Conversion of natural areas to land dominated by human use results in loss, degradation, and fragmentation of wildlife habitat which often lead to species endangerment or even extinction. Recently, reserve site selection models have begun to integrate spatial attributes in order to design more compact and connected reserve networks that are thought to improve long-term species persistence. While these models are a good step forward to designing conservation reserve networks, they might not be adequate for use in exurban areas that consist of heterogeneous mosaics of land uses where habitat fragmentation already exists and not all parcels are available for preservation. This paper presents a species conservation framework that expands upon traditional reserve site selection models in three ways. First, because of the focus on exurban areas, the framework used here allows for land conversion within core habitat patches. Second, the framework provides a more robust assessment of connectivity among patches by accounting for land-use heterogeneity in the dispersal matrix. And third, the framework explicitly incorporates species population dynamics. We apply our conservation framework to the case of pond-breeding salamanders in an exurban community in Rhode Island, USA. Comparisons are made between the outcomes for uniform conservation policies and more flexible policies that accommodate ecological and economic heterogeneity. As expected, policies that offer more flexibility in the decision-making process are less costly in terms of foregone development. Conservation planners should consider core habitat patches, dispersal matrix, and spatial scale in their decision making. By not assessing the potential impact of dispersal barriers, reserve site selection models will result in conservation plans that may not protect species over the long term, particularly for species residing in highly fragmented landscapes such as those found in many exurban communities.