We describe a new, non-parametric, method for reconstructing lensing mass distributions in multiple-image systems, and apply it to PG1115+080, for which time delays have recently been measured. It turns out that the image positions and the ratio of time delays between different pairs of images constrain the mass distribution in a linear fashion. Since observational errors on image positions and...

Giuseppe Genchi 1 , Maria Stefania Sinicropi 1,*, Alessia Carocci 2,*, Graziantonio Lauria 1 and Alessia Catalano 2 1 Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, 87036 Arcavacata di Rende (Cosenza), Italy; [email protected] (G.G.); [email protected] (G.L.) 2 Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari “A...

The study examined the impact of high school English teachers’ awareness of pedagogical competence on student learning. A psychometric measurement instrument of English language teachers' pedagogical competence (ELTPC) was first developed through factor analysis with 320 high school teachers in Guilan, Northern Iran. Based on the developed instrument, 36 teachers were divided into two groups of...

Introduction: according to the ethology theory mother infant separation immediately after birth can interfere with the infants innate behaviors for the initiation of breastfeeding. The aim of this study was to the effect of an interventional program based on the Theory of Ethology on infant breast feeding competence Materials and Methods: 114 primiparous, Iranian, healthy, full term mothers bet...

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...

Objectives: Verbal self-instruction strategy is one of the useful techniques for treating individual with learning disability. The purpose of the present study was to determine the effect of Verbal Self-instructional Package on the social competence of students with learning disability. Methods: The study was done in a quasi-experimental research and pre-test, post-test design with control g...

Virginia Cooperative Extension programs and employment are open to all, regardless of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, or marital or family status. An equal opportunity/affirmative action employer. Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University...

1Instituto de Geociências, Universidade de São Paulo USP, Rua do Lago 562, Cidade Universitária, São Paulo, Brazil, CEP 05508−080 2 British Antarctic Survey, Madingley Road, High Cross, Cambridge, Cambridgeshire, CB3 0ET, United Kingdom 3 Instytut Paleobiologii PAN, Twarda 51/55, 00−818, Warszawa, Poland 4 Departamento de Zoologia, Inst...