Lawson criterion for ignition exceeded in an inertial fusion experiment

For more than half a century, researchers around the world have been engaged in attempts to achieve fusion ignition as a proof of principle of various fusion concepts. Following the Lawson criterion, an ignited plasma is one where the fusion heating power is high enough to overcome all the physical processes that cool the fusion plasma, creating a positive thermodynamic feedback loop with rapidly increasing temperature. In inertially confined fusion, ignition is a state where the fusion plasma can begin "burn propagation" into surrounding cold fuel, enabling the possibility of high energy gain. While "scientific breakeven" (i.e., unity target gain) has not yet been achieved (here target gain is 0.72, 1.37 MJ of fusion for 1.92 MJ of laser energy), this Letter reports the first controlled fusion experiment, using laser indirect drive, on the National Ignition Facility to produce capsule gain (here 5.8) and reach ignition by nine different formulations of the Lawson criterion

The impact of audit quality on earnings rounding-up behaviour: some UK evidence

Previous studies (see, for example, Carslaw, 1988; Thomas, 1989; Niskanen and Keloharju, 2000; Kinnunen and Koskela, 2002; Van Caneghem, 2002) clearly suggest that public companies' managers tend to round up the first digit of reported earnings (i.e. for companies reporting profits). Based on a sample of listed UK companies and employing earnings rounding-up behaviour (henceforth ERUB) as an indication of earnings management, I attempt to determine the impact of differences in audit quality on earnings management. When I rely on the very popular brand-name proxy (i.e. BigFive versus non-BigFive auditors) to capture differences in audit quality, findings are inconsistent with BigFive auditors constraining earnings management practices (i.e. findings suggest ERUB for both BigFive and non-BigFive clients). Employing an alternative proxy (i.e. based on auditors' industry expertise), findings are only weakly consistent with specialist BigFive auditors constraining earnings management (i.e. ERUB) practices.

Ethical Purchasing Dissonance: Antecedents and Coping Behaviors

The pressure of oversight and scrutiny in the business-to-business purchasing process has the potential to cause psychological distress in purchasing professionals, giving rise to apprehensions about being ethically inappropriate. Utilizing depth interviews with public sector purchasing professionals in a phenomenological approach, the authors develop the notion of ethical purchasing dissonance to explain the psychological distress. An inductively derived conceptual framework is presented for ethical purchasing dissonance that explores its potential antecedents and consequences; illustrative propositions are presented, and managerial implications are discussed