BACKGROUND Over the past few decades, the incidence of adenocarcinoma (AC) of the lung increased much more rapidly than that of squamous cell carcinoma (SCC) in men and women. During this time period, filter cigarettes with substantially reduced "tar" and nicotine yields in the smoke came to dominate the market. METHODS The risk of SCC and AC in lifelong smokers of filter cigarettes relative ...

The paper explores the link between inter-industry wage di¤erences for identical workers and job ‡ows, in particular job destruction rates. I ...nd that, in the manufacturing sector, the two are negatively correlated across 2-digit SIC industries, a fact that most labor market theories fail to explain. A stochastic equilibrium model with endogenous job reallocation and search in the labor marke...

<span lang="EN-US">The article presents a solution to the problem of optimizing structure filter-compensating devices (FCD) when installed in high-voltage mine networks with powerful nonlinear electrical receivers. The urgency choosing rational FCD. design and installation location FCD is presented. main technical means compensation higher harmonics currents voltages receivers are conside...

Active power filter continues to be a powerful tool to control harmonics in power systems thereby enhancing the power quality. This paper presents a fuzzy tuned PID controller based shunt active filter to diminish the harmonics caused by non linear loads like thyristor bridge rectifiers and imbalanced loads. Here Fuzzy controller provides the tuning of PID, based on firing of thyristor bridge r...

With the advancements in micro-electromechanical systems (MEMS) technologies, magnetic and inertial sensors are becoming more and more accurate, lightweight, smaller in size as well as low-cost, which in turn boosts their applications in human movement analysis. However, challenges still exist in the field of sensor orientation estimation, where magnetic disturbance represents one of the obstac...

In this study, an alternative control method is proposed to improve the harmonic suppression efficiency of the active power filter in a distorted and unbalanced power system to compensate the perturbations caused by unbalanced non-linear loads. The proposed method uses a selftuning filter (STF) to process the grid voltage in order to provide a uniform reference voltage to obtain the correct ang...