Structural damage in materials evolves over time due to growth of fatigue cracks in homogenous materials and a complicated process of matrix cracking, delamination, fiber breakage and fiber matrix debonding in composite materials. In this study, a finite element model of the helicopter rotor blade is used to analyze the effect of damage growth on the modal frequencies in a qualitative manner. P...

Spectroscopy and direct imaging of Qll 15+080A,B,C with a CCD camera supports the hypothesis that they are gravitational images of a single object. Spectroscopy of the C m] ;\I909 emission line shows all the images to have identical spectra and redshifts (to within IOO km s 1), except that Bis slightly redder. The position and brightness of the three images has been accurately measured; the ima...

Department of Cardiology, Herzzentrum Ludwigshafen, Med. Klinik B, Institut f. Herzinfarktforschung Ludwigshafen an der Universitaet Heidelberg, Bremser Str. 79, 67063 Ludwigshafen, Germany; Servicio de Cardiologı́a, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Division Maladie Coronaire et Soins Intensifs Cardiaques, Hôpital Européen Georges Pompidou, Paris, France; Cardiovas...

We formalize the notion of a factorization of a word, a so-called F -factorization, introduced in [7] when solving some open problems on word equations. We show that most of the factorizations considered in the literature t well into that framework, and in particular that central algorithmic problems, such as the uniqueness or the synchronizability, remain polynomial time solvable for an import...

1 TunedIT Solutions, Zwirki i Wigury 93/3049, 02-089 Warszawa, Poland [email protected] 2 Faculty of Mathematics, Informatics and Mechanics, University of Warsaw Banacha 2, 02-097 Warszawa, Poland [email protected], [email protected] 3 Institute of Mathematics, University of Rzeszow Rejtana 16A, 35-959 Rzeszow, Poland [email protected] 4 Institute of Computer Science and Tech...

Construal level theory has been extraordinarily generative both within and beyond social psychology, yet the individual effects that form empirical foundation of have to be carefully probed precisely estimated using large samples preregistered analysis plans. In a highly powered study, we tested effect temporal distance on abstraction, one most common operationalizations (thinking about future ...