Let us call a lattice path in Z × Z from (0, 0) to (n, 0) using U = (1, k), D = (1,−1), and H = (a, 0) steps and never going below the x-axis a (k, a)-path (of order n). A super (k, a)-path is a (k, a)-path which is permitted to go below the x-axis. We relate the total number of humps in all of the (k, a)paths of order n to the number of super (k, a)-paths, where a hump is defined to be a seque...

BACKGROUND Transport is an important determinant of health and there is a well-established association between socio-economic status (SES) and risk of road accidents. Effective traffic calming interventions such as 20 mph zones and limits may therefore improve health and reduce health inequalities. METHODS Systematic review methodology was used to identify systematic reviews of the effects of...

BACKGROUND Regrettably motorcyclists frequently suffer related significant injuries. Doctors who manage trauma will encounter victims of motorcycle accidents and many aspects of care are unique to these patients due to the protective and performance enhancing equipment used by motorcyclists. This review examines the patterns of major injuries suffered by motorcyclists, the unique aspects of air...

The influence of heterogeneous time preferences on the term structure is investigated. Motivated by the Preferred Habitat Theory of Modigliani and Sutch, a model for intertemporal preferences accounting for preferred habitats is proposed. In a heterogeneous world, preferred habitats can explain humps in the yield curve. Agents with a long habitat prefer long term bonds to shorter instruments as...

The earth's magnetotail is characterized by stretched magnetic field lines. Energetic particles are effectively scattered due to the field-line curvature, which then leads isotropization of energetic particle distributions and precipitation atmosphere. Measurements at low-altitude spacecrafts are, thus, often used remotely probe current sheet configuration. This configuration may include spatia...

Dear Editor, Globally, about 1.25 million people die because of road traffic crashes every year. Although low‑ and middle‑income countries have only half of the total vehicles, they contribute nearly 90% of all crashes in the world. In India, according to the Ministry of Road Transport and Highways (MoRTH), there was an increase in the total number of accidents, persons injured, severity of inj...