Stochastic Frontier Estimation of Market Power in the Food Industries

We use a modified version of the stochastic frontier model to estimate oligopoly markups above the perfectly competitive frontier, separating out deterministic markups from purely stochastic markups. Using data from 42 US food processing industries between 1990 and 2010, empirical results indicate a widespread incidence of oligopoly power, with Lerner indexes averaging approximately 21%. Further, the estimated markups increase with industrial concentration but decrease with price elasticities and imports. Finally, the estimated Lerner indexes are in the range of previous food industry estimates using New Empirical Industrial Organization (NEIO) models.     

Ethnic discrimination in hiring,labour market tightness and the business cycle - evidence from field experiments

Several studies using observational data suggest that ethnic discrimination increases in downturns of the economy. We investigate whether ethnic discrimination depends on labour market tightness using data from correspondence studies. We utilize three correspondence studies of the Swedish labour market and two different measures of labour market tightness. These two measures produce qualitatively similar results, and, opposite to the observational studies, suggest that ethnic discrimination in hiring decreases in downturns of the economy.     

政策不确定性对公司投融资行为的影响研究

本文以2003-2013年中国A股上市公司的财务数据和31个省市自治区地方官员的变动数据为样本,采用地方官员变动率作为地方政策不确定性的代理变量,研究了政策不确定性对企业投融资的影响。研究发现,政策不确定性显著降低企业的债权融资,但是对股权融资影响不显著。政策不确定性对企业投资的影响存在两种渠道,一是通过降低企业融资来影响投资,二是通过企业资本运作降低融资对投资的影响系数,即政策不确定性越高,企业债权和股权融资对投资的正向作用会越小,这种作用机制在国有企业、大企业等与政策联系紧密的企业中作用更为显著。融资可获得性是政策不确定性影响投资的重要前提之一,融资可获得性较小时,政策不确定性显著降低了企业投资;在融资可获得性较大时,政策不确定性影响不显著。加强长期制度建设,降低政策不确定性,对于稳增长具有重要意义。     

A mechanisms-based explanation of nutrition policy (dis)integration processes in Uganda

Many African governments have recently invested in strengthened nutrition policy integration to address malnutrition; as a step towards realising the targets of the Sustainable Development Goal 2. Previous studies have identified various factors that enable or constrain how nutrition integration occurs across policy sectors. However, the explanatory value of these studies has remained relatively limited, as the causal processes through which independent variables affect policy outcomes remain unelucidated. This paper addresses this gap by applying a causal mechanisms approach to investigate the processes that explain observed patterns of nutrition policy (dis)integration in different ministries in Uganda. We employed a process-tracing research design to reconstruct the context-mechanism configurations that explain the observed patterns of nutrition integration in Uganda between 2000 and 2017. Data was collected from interviews with 34 respondents, various policy and programming documents, and a focus group discussion. Our analysis reveals that increased nutrition policy integration is explained by four causal mechanisms: (1) international policy promotion; (2) issue promotion by international actors; (3) issue promotion by domestic policy entrepreneurs; and (4) instrumental policy learning. Conversely, two mechanisms led to policy disintegration: (1) leadership contestation; and (2) turf wars. All mechanisms proved activated by configurations of contextual conditions that were time- and organisation-specific. This study showed how a mechanisms approach can provide a more refined understanding of policy successes and failures in nutrition governance. Whereas integration-fostering mechanisms cannot be automated, both government and international actors working to scale up investments in nutrition need to consider and invest in the contextual conditions that allow for sustained nutrition policy integration and, ultimately, a more effective delivery of nutrition services. These include developing leadership for nutrition at different governance levels, domestic ownership and integration-fostering capacity, and supporting policy-oriented learning.     

How does leverage in stock market influence the margin of stock index futures?

In this article, we propose a margin-setting model under the assumption of extreme stock price changes. Specifically, extreme stock price changes are caused by the positive feedback effect of leverage and market impact. By introducing these factors into the futures price changes through a cost-of-carry model for setting the margin of stock index futures, we find that leverage and market impact in stock market are positively correlated with the margin.     

To each according to their ability? Academic ranking and salary inequality across public colleges and universities

This article compares the salary structure of tenured and tenure-track faculty across schools within the university systems of North Carolina and New York. Specifically, we establish a positive relationship between school prestige and salary inequality, both overall and within specific academic ranks. This result suggests that the value to teaching is less discipline-specific than the value to research output. Marked differences in the aforementioned statistical linkage across academic ranks also confirm prior speculation that junior faculty salaries are more closely tied to academic value than senior faculty salaries.     

SKILLS MISMATCH: CONCEPTS,MEASUREMENT AND POLICY APPROACHES

The term skills mismatch is very broad and can relate to many forms of labour market friction, including vertical mismatch, skill gaps, skill shortages, field of study (horizontal) mismatch and skill obsolescence. In this paper, we provide a clear overview of each concept and discuss the measurement and inter‐relatedness of different forms of mismatch. We present a comprehensive analysis of the current position of the literature on skills mismatch and highlight areas which are relatively underdeveloped and may warrant further research. Using data from the European Skills and Jobs Survey, we assess the incidence of various combinations of skills mismatch across the EU. Finally, we review the European Commission's country‐specific recommendations and find that skills mismatch, when referring to underutilized human capital in the form of overeducation and skills underutilization, receives little policy attention. In cases where skills mismatch forms part of policy recommendations, the policy advice is either vague or addresses the areas of mismatch for which there is the least available evidence.     

There is no smoke without a fire: The effect of government interventions in less advanced economies

The lack of liquidity in the interbank market during the crisis of 2007–2011 led governments to impose different policies to rescue their countries’ banking sectors. While in advanced countries interventions in the banking sector were mostly related to a lack of liquidity and significant asymmetric information regarding counterparty risk, in many less advanced countries they had a precautionary motive. In our article, we investigate the effectiveness of policy interventions on healthy banking markets, with possible negative spill-over effects from other countries. To this extent, we use an event study methodology to test the effect of liquidity and financial sector policy announcements on interbank spread changes in six Central and Eastern European (CEE) countries over the period between 2007 and 2011. We find that standard liquidity interventions did not provide effective stabilization. In fact, our evidence suggests that the spread widened after their announcement, probably as a result of the negative signal and consequently increased risk aversion of banks. In such situations, regulators should consider policy instruments that aim to decrease uncertainty in the market.     

新疆林木种苗产业的市场结构、企业行为与市场绩效

市场结构和行为对市场绩效的影响机制是解释产业发展的重要前因。通过实地调研,分析新疆林木种苗产业组织市场结构-市场行为-市场绩效内在规律。结果表明,新疆林木种苗产业市场结构属于垄断竞争型市场结构;相当数量企业生产能力效率较低;市场种苗产业的生产能力利用率不高,市场绩效低下。基于结论,提出从优化市场结构,调整市场行为两个方面进行产业政策调整,进而提高市场绩效。     

Does local government competition aggravate haze pollution? A new perspective of factor market distortion

Haze pollution has become a new threat to China's sustainable development, but it may be that local government behaviour can play an important role in the prevention and control of pollutants. A dynamic spatial autoregressive (SAR) model is used to study the relationship between local government competition and haze pollution. To further explore the indirect impact of factor market distortion on haze pollution and control potential endogeneity problems, a newly developed intermediary effect model that incorporates the characteristics of the generalized method of moments (GMM) is utilized to explore how factor market distortion indirectly affects haze pollution. The research results show that regional haze pollution in China is characterized by significant spatial correlation, and local government competition has a positive impact on haze pollution; that is, local government competition exacerbates haze pollution. In general, local government competition not only directly leads to an increase in haze pollution but also further intensifies it by distorting the local factor market, and the intermediary role of factor market distortion is approximately 7.04%. The results of the regional inspection found that competition among local governments in the eastern region did not lead to haze pollution, and distortion of the factor market did not exist as an intermediary effect. However, both direct and intermediary effects are significant in the central and western regions. Therefore, an official performance appraisal system that includes ecological constraints should be established to guide the benign transformation of local government competition, and an environmental management mechanism must be developed for joint prevention and control to reduce haze pollution. In addition, the free flow of factors and marketization are equally important.