We construct compact examples of D-manifolds for type IIB strings. The construction has a natural interpretation in terms of compactification of a 12 dimensional ‘F-theory’. We provide evidence for a more natural reformulation of type IIB theory in terms of Ftheory. Compactification of M-theory on a manifold K which admits elliptic fibration is equivalent to compactification of F-theory on K ×S...

The information systems outsourcing market has seen rapid growth. Companies are increasingly choosing to outsource many of their information systems activities to services firms rather than sourcing them internally. This trend is inconsistent with the predictions of some of the published literature which point to the high costs of using an outside market. These articles, based on transaction co...

This paper examines defaulted same seniority/same coupon different maturity bonds in relation to capital structure arbitrage. Such bonds should trade at the same level or at predictable spreads. However, this study observes that spreads often widen and become more volatile as the company moves deeper into distress. If abnormal spreads tend to converge over time, a lucrative trading opportunity ...

a large body of evidence now indicates that the amount of mercury released from dental amalgam fillings can be significantly accelerated by exposure to radiofrequency electromagnetic fields (rf-emfs) such as common mobile phones and magnetic resonance imaging (mri). studies performed on the increased microleakage of dental amalgam restorations after exposure to rf-emfs have further supported th...

The Disease Control Priorities program (DCP) has pioneered the use of economic evidence in health. The theory of change (ToC) put forward by Norheim is a further welcome and necessary step towards translating DCP evidence into better priority setting in low- and middle-income countries (LMICs). We also agree that institutionalising evidence for informed priority-setting processes is crucial. Un...