New hardenable CERMETS for cutting and forming applications

The University Carlos III has developed a new metal matrix composite (MMC) constituted by a dispersion of ceramic particles of TiCN in a steel matrix. The matrix can be hardened by heat treatment, leading to a material with high hardness and toughness, and lower ceramic content and density than the commercial cutting materials. For the further development it is necessary the collaboration with manufacturers of forming and cutting tools, as well as end users of those materials

On-shell diagrams and the geometry of planar N < 4 SYM theories

We continue the discussion of the decorated on-shell diagrammatics for planar N < 4 Supersymmetric Yang-Mills theories started in arXiv:1510.03642. In particular, we focus on its relation with the structure of varieties on the Grassmannian. The decoration of the on-shell diagrams, which physically keeps tracks of the helicity of the coherent states propagating along their edges, defines new on-shell functions on the Grassmannian and can introduce novel higher-order singularities, which graphically are reflected into the presence of helicity loops in the diagrams. These new structures turn out to have similar features as in the non-planar case: the related higher-codimension varieties are identified by either the vanishing of one (or more) Plucker coordinates involving at least two non-adjacent columns, or new relations among Plucker coordinates. A distinctive feature is that the functions living on these higher-codimenson varieties can be thought of distributionally as having support on derivative delta-functions. After a general discussion, we explore in some detail the structures of the on-shell functions on Gr(2,4) and Gr(3,6) on which the residue theorem allows to obtain a plethora of identities among them.Comment: 34 pages, 65 figure

Compression of morbidity and the labor supply of older people

"This paper tests whether there is evidence of compression of morbidity using data from the American Health and Retirement Study and analyzes the effects of this on the labor supply of older people. We find younger cohorts to suffer less from functional problems than older cohorts at given ages. Furthermore, we observe that instrumentalized disability has a negative effect on labor force participation. According to the cohort analysis and the multivariate analysis, it can be concluded that individuals will be able to work longer because of the delay in the onset of disability problems." (Author's abstract, IAB-Doku) ((en))Lebenserwartung, ältere Menschen, alte Menschen, Gesundheitszustand, Krankheit, chronische Krankheit, Behinderung, Erwerbsbeteiligung, Lebensarbeitszeit, USA

Deep Fishing: Gradient Features from Deep Nets

Convolutional Networks (ConvNets) have recently improved image recognition performance thanks to end-to-end learning of deep feed-forward models from raw pixels. Deep learning is a marked departure from the previous state of the art, the Fisher Vector (FV), which relied on gradient-based encoding of local hand-crafted features. In this paper, we discuss a novel connection between these two approaches. First, we show that one can derive gradient representations from ConvNets in a similar fashion to the FV. Second, we show that this gradient representation actually corresponds to a structured matrix that allows for efficient similarity computation. We experimentally study the benefits of transferring this representation over the outputs of ConvNet layers, and find consistent improvements on the Pascal VOC 2007 and 2012 datasets.Comment: To appear at BMVC 201

Analysis on the hull girder ultimate strength of a bulk carrier using simplified method based on an incremental-iterative approach

The hull girder ultimate strength of a typical bulk carrier is analyzed using a simplified method based on an incremental-iterative approach. First, vertical bending moment is examined by seven different methods. The moment versus curvature curves and the values of the ultimate longitudinal moments at collapse states are determined for both hogging and sagging cases. Second, the ultimate strength under coupled vertical and horizontal bending moment is accounted. An interaction curve is obtained, which corresponds to the results of series of calculation for the ship hull subject to bending conditions with different angles of curvature. It is found that the interaction curve is asymmetrical because the hull cross section is not symmetrical with respect to the horizontal axis and the structural response of the elements under compression is different from that under tension due to nonlinearity caused by buckling. The angles of the resultant bending moment vector and that of the curvature vector are different in investigated cases. The interaction design equations proposed by other researches are also addressed to discuss the results presented by this study

Auditory hindsight bias in school-age children

We report two experiments investigating hindsight bias in children, focusing on a rarely studied age range of 8–13 years. In Experiment 1, we asked children to complete both an auditory hindsight task and a visual hindsight task. Children exhibited hindsight bias in both tasks, and the bias decreased with age. In Experiment 2, we further explored children ‘s auditory hindsight bias by contrasting performance in hypothetical and memory designs (which previous research with adults had found to involve different mechanisms—fluency vs. memory reconstruction). Children exhibited auditory hindsight bias in both tasks, but only in the hypothetical design was the bias magnitude modulated by a priming manipulation designed to increase fluency, replicating and extending the pattern found in adults to children.Spanish Government PGC2018-095868-B-I00Universidad de Granada/CBU