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The aim of this study is to investigate for monotonicity, linearity and symmetry for the price volatility–trading volume relationship in the futures markets of agricultural commodities.

Empirical findings are produced with the use of a highly flexible, nonparametric approach. Data are daily prices and volumes from the commodities of corn, hard red wheat, oats, rice and soybeans.

Results reveal violations of monotonicity locally but not globally. Volume and price volatility have, in all markets, a nonlinear relationship to each other, indicating that the strength of the relationship does not remain constant over the entire joint distribution. Global symmetry is rejected for the markets of oats and hard red wheat but cannot be rejected for the remaining three markets. The latter suggests that large values of good volatility are likely to occur together with high trading volumes, as do large values of bad volatility in these markets.

To the best of the authors’ knowledge, this is the first empirical work to test simultaneously for monotonicity, linearity and symmetry between price volatility and trading volume in the futures markets of agricultural commodities.

Drawing upon upper echelon, regulatory focus and attention theories and focusing on SMEs, the purpose of this paper is to answer questions on how the motivational disposition (promotion vs. prevention regulatory focus) of CEOs affects their information search patterns (i.e. search selection and intensity) and consequently organizational level engagement in different types of innovation activities (exploration vs. exploitation).

A quantitative study was conducted collecting data from the CEOs of SMEs operating in the dynamic wine and spirits industry in Greece. The data were collected in two independent time streams and the proposed theoretical model was tested by applying OLS regression analysis.

The current research provides evidence that differences in CEOs’ level of promotion and prevention focus trigger different information search selection and search intensity patterns. Nonetheless, the attention to innovation components act as mediators only in the hypothesized relationships between a CEO's level of prevention and promotion focus and exploration. Paradoxically, filtered through attention to innovation and triggered from the same motive, that is to reduce negative emotions, promotion focus CEOs choose to direct resources to exploitation and avoid investing in exploration, whilst the opposite was supported for prevention focus CEOs.

The results highlight the important role of a CEO's regulatory focus orientation in promoting diverse attention to innovation patterns and firm-level innovation tendencies towards exploration and/or exploitation.

This study's contributions extend and combine the theories of regulatory focus, UET and attention in the field of managerial/entrepreneurship behavior and innovation. Therefore, they are valuable for understanding the determinants of firm-level innovation choices (exploration vs. exploitation) in SMEs.

In this work, the authors analyze the dynamic interdependencies between military expenditures and the real economy for the period 1970–2018, and the authors' approach allows for the existence of dominant economies in the system.

In this study, the authors employ a Network General Equilibrium GVAR (global vector autoregressive) model.

By accounting for the interconnection among the top twelve military spenders, the authors' findings show that China acts as a leader in the global military scene based on the respective centrality measures. Meanwhile, statistically significant deviations from equilibrium are observed in most of the economies' military expenses, when subjected to an unanticipated unit shock of other countries. Nonetheless, in the medium run, the shocks tend to die out and economies converge to an equilibrium position.

With the authors' methodology the authors are able to capture not only the effect of nearness on a country's military spending, as the past literature has documented, but also a country's defense and economic dependencies with other countries and how a unit's military expenses could shape the spending of the rest. Using state-to-the-art quantitative and econometric techniques, the authors provide robust and comprehensive analysis.