We review the intimate connection between (super-)gravity close to a spacelike singularity (the "BKL-limit") and the theory of Lorentzian Kac-Moody algebras. We show that in this limit the gravitational theory can be reformulated in terms of billiard motion in a region of hyperbolic space, revealing that the dynamics is completely determined by a (possibly infinite) sequence of reflections, whi...

The more important criteria for identification of the S form of H. pertussis and for its differentiation from R variants are presented in summary fashion in Table IV. The differences as indicated in detail in the foregoing sections and as shown briefly in this tabulation are so clear-cut that they call for little, if any, further comment. Of all the differential characteristics, the morphologic...

Failure to access healthcare is an important contributor to child mortality in many developing countries. In a national household survey in Malawi, we explored demographic and socioeconomic barriers to healthcare for childhood illnesses and assessed the direct and indirect costs of seeking care. Using a cluster-sample design, we selected 2,697 households and interviewed 1,669 caretakers. The ma...

the experience of countries that have liberalized their electricity markets has shown that the assumption that markets will naturally produce a competitive result is not always justified. the most important concern refers to the changes of demand and price which result in providers’ mistreatment. market power is typically defined as the ability to profitably alter prices away from competitive l...

The concept of long-haul low-cost operations has become somewhat appealing in the airline industry recent years. In Europe, rapid expansion carrier Norwegian that entered markets from several large metropolises (London, Paris, Barcelona, etc.) imposed a burden challenges to full-service carriers (FSCs). However, operates portion its service London Gatwick by offering flights mainly on high-dens...

This study examines the relation of the stock markets in India with some leading South Asian countries and also endeavours to communicate the impression whether Indian equity market is more proficient than the other south Asian markets as is popularly believed.Integrated financial market is assumed to be of immense significance as it constitutes an important vehicle for promoting domestic savin...