The LIML estimator has finite moments!

The Limited Information Maximum Likelihood estimator of the vector of coefficients of a structural equation in a simultaneous equation model is the vector that defines the linear combination maximizing the effect variance relative to the error variance. If this “eigenvector” solution is normalized by setting a designated coefficient equal to 1, the second-order moment of the estimator may be unbounded. However, the second-order moment is finite if the normalization sets the sample error variance of the linear combination equal to 1.     

The U.S.–Brazil relationship opportunity: Business synergies for a dynamic global environment

The U.S.–Brazil relationship features an intersection of public and private sectors characteristic of the post‐2000 dynamics of international business and governmental relations. As a triple helix reference for the private sector, the public sector, and academia, this article explores how further alignment of public and private interests of the United States and Brazil can improve the bilateral relationship between the two largest countries in the Western hemisphere. The first section recaps the U.S.–Brazil public relationship and cultural perspectives shared between Brazil and the United States. The second section reviews the relevance of the U.S.–Brazil relationship in Brazil's economy and business marketplace. Sections 3 through 5 discuss specific trade, investment, and tax agreements that can be mutually beneficial for the United States and Brazil. The final section recommends further areas for public–private cooperation between the United States and Brazil.     

PPPs: THE PASSAGE OF TIME PERMITS A SOBER REFLECTION

This paper argues that evaluations of public–private partnerships thus far point to contradictory results regarding their effectiveness and value-for-money. Despite continuing political popularity, greater care is needed to strengthen future evaluations and conduct such assessments away from the policy cheerleaders.     

Tourism,Marketing and Sustainable Development in the English National Parks: The Role of National Park Authorities

This paper examines the work of the English National Park Authorities (NPAs) in relation to aspects of the development of sustainable tourism. The NPAs have implicitly sought to achieve sustainable tourism development since the parks were first designated, striving to balance the needs of visitors and the environment within the context of living, working landscapes. Studies have revealed, however, that some NPAs are not fully championing sustainable tourism development. The paper examines the NPA's use of marketing and marketing perspectives in encouraging sustainable tourism, exploring attitudes, roles and activities. A diverse, piecemeal and sometimes underinformed approach is revealed. The paper concludes with ways forward for English NPAs and for other protected area management organisations.     

Individual investor’s limited attention and IPO performance

The paper models and verifies the spread and decay of investor’s attention before listing on the stock market by using the Baidu Index as a proxy for investor attention of the frequency of searches. We find that individual investor’s attention has a significant influence on the first-day IPO return. We empirically study the allocation of investor attention among several stocks and discover that the more stocks going public on the same day, the milder and more similar their performance tends to be. This paper is the first to research IPO performance and individual attention.     

Defining Corporate Citizenship: Evidence from Australia

This study reports the results of a survey of the attitudes to corporate citizenship and practices of corporate citizenship of 93 of the largest private and publicly listed corporations in Australia. The results suggest there was considerable hesitation in positioning corporate citizenship as a proactive, long term, internal culture process. Instead, corporate emphasis was generally on short-term community activities. Also, there was little variation in these results when respondents were classified by industry, international involvement and legal structure. Clearly, significant links have yet to be made by corporate Australia to connect the financial, social and environmental bottom lines.     

New development: New global health care PPP developments—a critique of the success story

Health care public–private partnerships (PPPs), where clinical services as well as infrastructure are delivered by the private sector, are coming under the spotlight as governments seek to achieve value for money in health budgets. Existing examples have been widely reported as successful. However, this article urges caution as a closer look at the evidence shows that handing over control of service delivery to the private sector is difficult to monitor and evaluate, carries cost implications which remain largely unquantified and can create additional risk.     

Research,development and scaling-up the adoption of fodder shrub innovations in East Africa

Smallholder farmers in developing countries face numerous limitations that hinder them from embracing improved agricultural practices and innovations with great potential for meaningful transformations of livelihoods. Consequently, farmers continue living in vicious cycles of poverty despite decades of government and donor expenditures on poverty alleviation. In the last two decades, research and development organizations collaborated in testing and validating selected fodder shrub species as reliable sources of less expensive and easily available protein feeds. With minimal interventions, the research findings have great potential to improve productivity for many smallholder farmers. Tested species include Calliandra calothyrsus, Leucaena spp., Chamaecytisus palmensis, Sesbania sesban, Morus alba and Gliricidia sepium. Dissemination and adoption surveys estimated that 205,000 smallholder farmers (40–50 per cent being women) had planted fodder shrubs by 2005. Currently, fodder shrubs contribute US$3.8 million annually to farmers' incomes and estimated potential annual income is US$81 million. Factors associated with success in fodder scaling-up include deliberate involvement of fodder technology champions, collective action in community mobilization and project implementation, pluralistic extension approaches, sustainable germplasm supply systems, broader partnerships and civil society campaigns. Constraints and challenges include: ineffective delivery of extension and research services, inhibitive policies, political interferences, frequent droughts and inadequate monitoring and evaluation systems.     

Contract enforcement and the size of the informal economy

This paper describes a model where the size of the informal sector decreases as the degree to which financing contracts can be enforced in the formal sector rises. Agents who choose to operate in the informal sector can evade taxes, but they have no access to official means of contract enforcement. Numerical simulations of the model suggest that lax tax enforcement alone does not suffice to generate a large informal sector. Contractual imperfections, on the other hand, can generate a large informal sector and account for several distinguishing features of the organization of production in developing economies. I would like to thank Tim Kehoe, Ed Prescott and Manuel Santos for their guidance, and seminar participants at ITAM, the Universidad Torcuato di Tella and the University of Montréal for their valuable comments. The views expressed herein are those of the authors and may not reflect the views of the Federal Reserve Bank of Dallas or the Federal Reserve System.     

密封价格拍卖或招标中的有限腐败

本文研究了密封价格拍卖或招投标中的有限腐败问题,探讨了当行贿者通过行贿招标主持人获得多次出标机会,而其他竞标者不知道这种有限腐败行为时,对拍卖结果所产生的影响。在第二价格拍卖机制下,由于竞标者按真实估价报价总是弱占优策略,该有限腐败行为在此拍卖机制下不会产生影响。但对于密封的第一价格拍卖机制来说,由于行贿者的多个标价中的最高标价比其他竞标者的标价更强势(aggressive),导致其他竞标者获胜的概率减少,行贿者获胜的概率增加。而行贿者的其他出标机会所用的出标策略比其他竞标者的出标策略要弱势,所以在保证期望收益增加的情况下所付出的期望支付有可能比在没有腐败情形下的期望支付要低。特别地,当行贿者获得更多的出标机会时所采用的出标策略与我们的直觉是有差异的。有限腐败对于物品所有者来说是不利的,他的期望收益随着行贿者的特权的增强而减少。