Landen transformations are maps on the coefficients of an integral that preserve its value. We present a brief survey of their appearance in the literature. To Henry, who provides inspiration, taste and friendship 1. In the beginning there was Gauss In the year 1985, one of us had the luxury of attending a graduate course on Elliptic Functions given by Henry McKean at the Courant Institute. Amo...

IEEE Robotics & Automation Magazine 43 1070-9932/07/$25.00©2007 IEEE © iSW OOP, COR EL CO RP. T he field of modular self-reconfigurable robotic systems addresses the design, fabrication, motion planning, and control of autonomous kinematic machines with variable morphology. Beyond conventional actuation, sensing, and control typically found in fixed-morphology robots, self-reconfigurable robots...

conclusions the world health organization (who) has suggested relatively relaxed limits of 100 cfu/m3 for bacteria and 50 cfu/m3 for fungi in the hospital air. therefore, quantitative and qualitative outcomes of this study demonstrate that contamination level and bacterial variety in surgery rooms and emergency departments is high and effective measures must be taken to control the possible hea...

background: nursing project management is widely used in different aspects of the society. however, whether the nursing project management can control the infections in the operation room (or) is rarely reported. we evaluated the outcomes of surgical patients after implementing a nursing project management program to provide new scientific ways to manage the or infections. methods: overall, 382...

conclusions injuries affect all age groups; however, the disproportionately at risk population is the productive youth. preventive strategies should focus on reducing trauma incidence among young men at population level. considering the higher number of incidents occurring in mid spring and late summer, authorities should devise preventive plans mainly through alteration of traffic rules in thi...

Metformin in therapy naı¨ve patients with polycystic ovary syndrome Sir, We have read with great interest the paper by Moll et al. (2007) recently published on Human Reproduction Update. The aim of this systematic review was to assess the efficacy of metformin administration in the total spectrum of treatment possibilities for polycystic ovary syndrome (PCOS) patients in terms of fertility impr...