We consider the symmetric rendezvous search game on a complete graph of n locations. In 1990, Anderson and Weber proposed a strategy in which, over successive blocks of n−1 steps, the players independently choose either to stay at their initial location or to tour the other n− 1 locations, with probabilities p and 1− p, respectively. Their strategy has been proved optimal for n = 2 with p = 1/2...

Binary collision of droplets is a fundamental form of droplet interaction in the spraying flow field. In order to reveal the central collision mechanism of two gel droplets with equal diameters, an axi-symmetric form of the Navier-Stokes equations are firstly solved and the method of VOF (volume of fluid) is utilized to track the evolution of the gas-liquid free interface. Then, the numerical c...

Four children affected by Sturge-Weber syndrome and demonstrating bilateral intracranial calcification are described, bringing up to 21 the number of similar reported cases. The frequency of bilateral hemisphere involvement in this syndrome is not known, but it might be as high as 15%. If present, neurosurgical intervention is, in our opinion, contraindicated.

Aim: To determine the incidence of syndesmotic injuries in ankle fractures within the division of Orthopaedic Surgery, University of Pretoria. Methods: A total of 94 serial patients with ankle fractures were assessed for syndesmotic injury by means of ankle mortise stress views and manual traction with a bone hook. Each fracture was classified according to both the Weber and Lauge Hansen classi...

Objective: To determine common presenting symptoms, age, disease extent; and the efficacy of different surgical approaches in the diagnosis and treatment of Angiofibroma of nasopharynx. Design: All prepubertal and adolescent patients presenting with nasal obstruction, recurrent epistaxis, denasal speech, conductive deafness and anaemic look, reporting to our dept for consultancy were evaluated....

Telangiectasia may be identified by visual inspection during physical examination of the skin and oral cavity or by endoscopy. Diagnosis is made after clinical examination and genetic testing based on the Curacao criteria: telangiectasia in the face, hands or oral cavity; recurrent epistaxis; arteriovenous malformations with visceral involvement; and a positive family history. Diagnosis is conf...

SYNOPSIS A patient suffering from Weber-Christian panniculitis was found at necropsy to have similar lesions in the visceral adipose tissue. When the lesions occur internally, diagnosis during life is complicated by the difficulty of examining visceral adipose tissue and the disease may often go unrecognized, but patients suffering from Weber-Christian panniculitis should be investigated bearin...

In 1948 Ormond reported two cases of unheralded anuria due to idiopathic retroperitoneal fibrosis. Previous documentation of the condition had been scanty, but since then over a hundred similar cases have been reported. The patient, usually an adult, at first has only vague symptoms such as abdominal discomfort, anorexia, loss of weight, or nausea. The diagnosis is made usually only when signs ...