In this work we propose a Robin-Robin preconditioner combined with Krylov iterations for the solution of the interface system arising in fluid-structure interaction (FSI) problems. It can be seen as a partitioned FSI procedure and in this respect it generalizes the ideas introduced in [Badia, Nobile and Vergara, J. Comput. Phys. 227 (2008) 7027 –7051]. We analyze the convergence of GMRES iterat...

The Tolman-Bondi solution of the Einstein equations is used in order to model the time evolution of the void observed in Boötes. The present density contrast of the central region (∼ −0.75) and its radius (∼ 30h−1 Mpc) are fixed, while the density parameter of the Universe, the amplitude of the density contrast inside the void wall, the width of this wall and the distance from the void centre t...

This paper presents an overview of our recent enhanced 3D extended finite element toolkit for Abaqus (XFA3D) for fatigue damage assessment of welded aluminum structures under block loading. To alleviate the computational burden associated with the insertion and propagation of arbitrary cracks in the presence of a welding induced residual stress field, a nodal enriched displacement field coupled...

This paper investigates when trade could cause the selection effect. Since the increased average real wage induced by trade triggers the selection effect in Melitz (2003), the main issue is the labor market conditions under which trade raises the average real wage. To identify the labor market conditions for the selection effect, this paper employs worker heterogeneity with respect to abilities...

PURPOSE The human ABCB1 gene encodes P-glycoprotein, which transports a broad range of anticancer drugs, including paclitaxel. Although the functional consequences of ABCB1 polymorphisms have been the subject of numerous studies, few have assessed the association with clinical outcome. EXPERIMENTAL DESIGN We assessed the association between the 2677G>T/A, 3435C>T, and 1236C>T ABCB1 polymorphi...

Background & Aims of the Study: Coagulation is an essential process for the removal of fine particulate matter in water treatment. Polyaluminium ferric chloride (PAFC) is a composite inorganic polymer of Aluminium and ferric salt. This study was conducted to find out the optimum coagulation conditions for the removal of turbidity, color and organic matter (UV absorbance) in low to mediu...

Incorporation of plant residues in soil affects N and C content and dynamics. This studydetermined the effects of short-term alternative rice (Oryza sativa L.) residue management on Nmineralization and uptake by rice. Pot and laboratory incubation experiments were established byincorporating 15N-labeled rice straw and rice straw compost in paddy soil. The 15N recovered by riceaveraged 16.6%; mo...

a significant portion of manganese (mn) chemical fertilizers applied to calcareous soils is not absorbed by the first crop and may, therefore, affect the growth as well as chemical composition of the subsequent crops, this being called the residual effect of mn, soil tests may be employed to predict such effects. the present experiment was conducted to study the residual effects of manganese su...

Calibrated ACS/WFC science frames processed through the CALACS pipeline exhibit a residual offset in their absolute levels at the edge separating the Amp A-B and Amp C-D quadrants. This effect can be attributed primarily to uncertainties in the bias level subtraction. We present an analysis of the overscan levels and of the amplitude and behavior of the residual offsets for a large sample of bi...

22 The evolution and maintenance of honest or reliable signaling has been a major question 23 in evolutionary biology. The question is especially puzzling for a particular class of signals used 24 in aggressive interactions: threat signals. Here we report a study on song sparrows (Melospiza 25 melodia) in which we assayed males with playbacks in their territories to quantify their 26 aggressive...