introduction: the purpose of this article was to evaluate the quality of sample size calculation reports in published clinical trials in journal of endodontics and international endodontic journal in years 2000-1 and 2009-10. materials and methods: articles fulfilling the inclusion criteria were collected. the criteria were: publication year, research design, types of control group, reporting s...

The idea of perturbation independent decay (PID) has appeared in the context of survival-probability studies, and lately has emerged in the context of quantum irreversibility studies. In both cases the PID reflects the Lyapunov instability of the underlying semiclassical dynamics, and it can be distinguished from the Wigner-type decay that holds in the perturbative regime. The theory of the sur...

"In this paper we examine the living arrangements of older unmarried women--that is, single, divorced, or widowed women--in The Netherlands....[The] paper analyzes the distribution of [such] women across several types of living arrangements, including an institutionalized category ('residential homes'). The factors influencing this distribution that are examined include indices of functional l...

Authentication of quantum sources is a crucial task in building reliable and efficient protocols for quantum-information processing. Steady progress vis-\`{a}-vis verification devices the scenario with fully characterized measurement has been observed recent years. When it comes to uncharacterized measurements, so-called black-box scenario, practical methods are still rather scarce. Development...