Pilot workload and fatigue on short-haul routes: an evaluation supported by instantaneous self-assessment and ethnography

In the context of claims that the European Aviation Safety Agency’s flight and duty- time regulations pose a threat to safety, pilot workload and fatigue were assessed on two short-haul routes using a mixed-methods approach. Data produced by the US Air Force School of Aerospace Medicine Crew Status Survey (CSS) showed that pilots rarely assessed workload and fatigue to be high-risk. Data produced by an ethnographic study somewhat contradicted the CSS findings, with some pilots claiming to be fatigued. The combined data suggested a correlation between both workload and fatigue and aviation system dynamics such as airspace manoeuvring restrictions, especially in the vicinity of busy airports. The research presented an opportunity to test claims made for the CSS, specifically that it is ‘easily understood, easy to administer and minimally intrusive’. Missing forms and errors suggest that it is not as reliable a research instrument as proponents suggest, although contextual factors may have served to reduce the volume and quality of data. It is concluded that a pre-survey, systems-thinking-informed evaluation of the host airline would suggest ways of improving buy-in.     

The impact of the cessation of blogs within the UK police blogosphere

This article investigates the concept of influence within a group of police work‐bloggers. During the period studied (2007–2013), three influential police bloggers, well‐known within the small and tightly knit UK police blogosphere, abruptly ended their blogging activity. Their cessation stimulated others to reconsider their own blogging and led to several bloggers ceasing to blog for fear of being outed and disciplined or because they had been warned by superiors. This can be seen as part of a wider phenomenon as increasing blog surveillance has resulted in a reduction of work‐related blogs. The study shows that work‐blogging cessation is influenced by the activities or perceived activities of bloggers' peers and that, while internal factors were influential in the creation of new work‐blogs, external factors—in particular, fear of consequences for their career—were the predominant influences on their cessation.     

Nexus Between Energy Consumption and Economic Growth in China: From the Perspective of Embodied Energy Imports and Exports

The nexus between energy consumption and economic growth in China is analyzed from the perspective of embodied energy imports and exports in this article. The research results suggest that China is a net embodied energy exporter and it is the inevitable result of China’s present economic development model. Exporting embodied energy contributes significantly to China’s economic development, and the trade-off costs of employment, trade surplus and government tax for China to reduce embodied energy exports are very high. China is bound by its own policies and unable to radically change its embodied energy exporting position within the foreseeable future.     

Short-term residual reversal

Conventional short-term reversal strategies exhibit dynamic exposures to the Fama and French (1993) factors. We develop a novel reversal strategy based on residual stock returns that does not exhibit these exposures and consequently earns risk-adjusted returns that are twice as large as those of a conventional reversal strategy. Residual reversal strategies generate statistically and economically significant profits net of trading costs, even when we restrict our sample to large-cap stocks over the post-1990 period. Our results are inconsistent with the notion that reversal effects are the result of trading frictions or non-synchronous trading of stocks and pose a serious challenge to rational asset pricing models.     

Short-term debt maturity,monitoring and accruals-based earnings management

Most prior studies assume a positive relation between debt and earnings management, consistent with the financial distress theory. However, the empirical evidence for financial distress theory is mixed. Another stream of studies argues that lenders of short-term debt play a monitoring role over management, especially when the firm’s creditworthiness is not in doubt. To explore the implications of these arguments on managers’ earnings management incentives, we examine a sample of US firms over the period 2003–2006 and find that short-term debt is positively associated with accruals-based earnings management (measured by discretionary accruals), consistent with the financial distress theory. We also find that this relation is significantly weaker for firms that are of higher creditworthiness (i.e. investment grade firms), consistent with monitoring benefits outweighing financial distress reasons for managing earnings.     

Share Tipsters and Fair Advertising

The paper considers the concept of ‘fairness' as it applies to the advertisements of investment advisers. In the light of the empirical evidence relating to the performance of investment tipsters and fund managers, it is argued that current advertising practices tend to raise investors’ expectations to unrealistic levels. Possible changes to advertising practice regulations are considered.