U-type and column-orthogonal designs for computer experiments

U-type designs and orthogonal Latin hypercube designs (OLHDs) have been used extensively for performing computer experiments. Both have good spaced filling properties in one-dimension. U-type designs may not have low correlations among the main effects, quadratic effects and two-factor interactions. On the other hand, OLHDs are hard to be found due to their large number of levels for each factor. Recently, alternative classes of U-type designs with zero or low correlations among the effects of interest appear in the literature. In this paper, we present new classes of U-type or quantitative \(3\) -orthogonal designs for computer experiments. The proposed designs are constructed by combining known combinatorial structures and they have their main effects pairwise orthogonal, orthogonal to the mean effect, and orthogonal to both quadratic effects and two-factor interactions.     

Institutional change in the Schumpeterian–Baumolian construct: power,contestability and evolving entrepreneurial interests

Baumol's hypothesis, i.e. that the allocation of entrepreneurial talent in productive, unproductive and destructive activities is determined by the rules of the game, is supported by a growing body of empirical research and underpins new avenues of research in entrepreneurial studies. However, Baumol's paper offers precious few insights, beyond policy action, regarding how change to the rules of the game can be effected, because it views institutions as endogenous. This paper sets out to address this gap through an extension of Schumpeterian–Baumolian construct. The paper argues that changing institutions is a contestable process: its outcome determined by the complex nexus of interests and power endowments of actors. Changing the outcome of this contestation is dependent on the emergence of new entrepreneurial groupings and/or the evolution of the power endowments or interests of existing ones. Two historical illustrations are used to support the hypothesis and of this study.     

Bucking the Trend: The Informativeness of Analyst Contrarian Recommendations

This paper examines price reactions to analysts’ recommendations issued in the opposite direction of recent stock price movements. We find that upgrade and downgrade contrarian recommendations induce larger market reactions than noncontrarian recommendations, consistent with the view that they are more informative. These results are strongest in the period before Regulation Fair Disclosure, consistent with the view that private information was likely curbed after its implementation. Contrarian downgrades are more likely to be issued by all‐star analysts, but less likely by experienced and busy analysts suggesting that contrarian recommendations are subject to career concerns.     

Assessing the impact of liberalisation policies on the Greek labour market: an insider–experts' view from the perspective of the varieties of liberalisation

During the recent Great Recession (2008–2018), Greece has become the prototype example of the implementation of austerity policies in Europe. Contrary to public discourse, these austerity policies were complemented by substantial labour market reforms that promoted employment and wage flexibility. This article aims to present a theory-driven understanding of the implementation and the effects of these reforms. For this purpose, we employ a qualitative study consisting of semi-structured interviews with 50 labour market experts—government officials and labour lawyers, academics, labour union representatives and employer association representatives. Using Thelen's framework on the Varieties of Liberalization, we conclude that, contrary to the initial aims of the reforms, Greece followed a trajectory of direct deregulation, reducing considerably the level of both coordination between employers and workers, and coverage of employment protection. The interviews show that the dismantling of collective bargaining system was the most decisive move in this path.     

Idiosyncratic volatility puzzle: influence of macro-finance factors

Review of Quantitative Finance and Accounting - We analyze the cross-sectional relation between expected idiosyncratic volatility and stock returns. The expected idiosyncratic volatility is...     

Does Firing a CEO Pay Off?

We examine whether involuntary chief executive officer (CEO) replacements pay off by improving firm prospects. We find CEO successors’ acquisition investments to be associated with significantly higher shareholder gains relative to their predecessors and the average CEO. This improvement in postturnover acquisition performance appears to be a function of board independence, hedge fund ownership, and the new CEO's relative experience. CEO successors also create sizable shareholder value by reversing prior investments through asset disposals and discontinuing operations and by employing more efficient investment strategies. Our evidence suggests that firing a CEO pays off.     

Price linkages in the international skim milk powder market: empirical evidence from nonparametric and time‐varying copulas

The objective of this article is to assess the integration of the international skim milk powder (SMP) market. This is pursued using monthly data over 2001 to 2014 from the three principal SMP‐producing regions (the EU, the USA and Oceania) and nonparametric kernel‐based and time‐varying copulas. The empirical results point to a strong and an increasing degree of overall price co‐movement and to statistically significant probabilities for joint price crashes and booms. While the EU and Oceania have been the regions with the highest degree of integration, the USA has been catching up with them.     

Coordinating climate and trade policies: Pareto efficiency and the role of border tax adjustments

This paper explores the role of trade instruments in globally efficient climate policies, focusing on whether or not some form of border tax adjustment (BTA) is warranted when carbon prices differ internationally. The analysis shows that, while there is no case for BTA when all instruments can be freely deployed, Pareto-efficiency does require a form of BTA when carbon taxes in some countries are constrained: its purpose then is to partly counteract the impact on emissions of inappropriate carbon pricing there, or, equivalently, to undo the trade distortions such pricing creates. The required form of BTA is generally complex, but a special case is identified in which it optimally has the simple structure envisaged in practical policy discussions. It is also shown that the efficiency case for BTA depends critically on whether climate policies are pursued by carbon taxation or by cap-and-trade.     

Investigation of current perspectives for NHS Wales sustainable development through procurement policies

Public sector procurement has to operate under the pressure of policies and strict budgets. This paper examines the current perspectives of the NHS Wales Shared Services Partnership (NWSSP) on sustainable procurement policies. In particular, it investigates the adoption levels of the sustainable procurement policies of buyers (NHS Wales), examines the level of engagement of small- and medium-sized enterprises (SMEs) with NHS Wales, and explores the support for the existing sustainable procurement function through order processing analysis of catalogue coverage.     

An empirical assessment of proposed solutions for resolving scale problems in value relevance accounting research

We implement the most common empirical specifications, with different approaches to control for scale problems, used in studies on the value relevance of accounting information. We study whether the results offered by these specifications are consistent with the residual income valuation model and with the Burgstahler and Dichev option-style valuation framework. Undeflated and per-share specifications offer results that are more in line with both benchmarks. Other deflated specifications and approaches deviate, to different extents, from the expectations of both frameworks. We interpret these deviations as signs of misspecification.