University of Notre Dame

About: University of Notre Dame is a education organization based out in Notre Dame, Indiana, United States. It is known for research contribution in the topics: Population & Context (language use). The organization has 22238 authors who have published 55201 publications receiving 2032925 citations. The organization is also known as: University of Notre Dame du Lac & University of Notre Dame, South Bend.

A local update strategy for iterative reconstruction from projections

Abstract: A method for Bayesian reconstruction which relies on updates of single pixel values, rather than the entire image, at each iteration is presented. The technique is similar to Gauss-Seidel (GS) iteration for the solution of differential equations on finite grids. The computational cost per iteration of the GS approach is found to be approximately equal to that of gradient methods. For continuously valued images, GS is found to have significantly better convergence at modes representing high spatial frequencies. In addition, GS is well suited to segmentation when the image is constrained to be discretely valued. It is shown that Bayesian segmentation using GS iteration produces useful estimates at much lower signal-to-noise ratios than required for continuously valued reconstruction. The convergence properties of gradient ascent and GS for reconstruction from integral projections are analyzed, and simulations of both maximum-likelihood and maximum a posteriori cases are included. >

How Active is Your Fund Manager? A New Measure That Predicts Performance

Abstract: We introduce a new measure of active portfolio management, Active Share, which represents the share of portfolio holdings that differ from the benchmark index holdings We compute Active Share for domestic equity mutual funds from 1980 to 2003 We relate Active Share to fund characteristics such as size, expenses, and turnover in the cross-section, and we also examine its evolution over time Active Share predicts fund performance: funds with the highest Active Share significantly outperform their benchmarks, both before and after expenses, and they exhibit strong performance persistence Non-index funds with the lowest Active Share underperform their benchmarks

The Environment of Marketing Channel Dyads: A Framework for Comparative Analysis:

Abstract: The political economy framework for the comparative analysis of marketing channel dyads proposed by Stern and Reve (1980) focused mainly on relationships between channel members. This article exten...

Towards a family process model of maternal and paternal depressive symptoms: exploring multiple relations with child and family functioning.

Abstract: Background: Research has focused on maternal dysphoria and child adjustment. However, family process models indicate gaps in the study of paternal dysphoria, broader family functioning, and diverse child outcomes. Method: A community sample of 235 mothers and fathers of kindergarten children completed measures of depressive symptoms, family functioning and child adjustment. Teachers also provided measures of child adjustment. Results: Supportive of pervasive effects even in a community sample, increased parental depressive symptomatology was related to increased marital conflict, insecure marital attachment, less parental warmth, more psychological control in parenting, and multiple child problems. Child gender moderated child outcomes differently for paternal and maternal dysphoria. Marital relations, but not parenting, mediated child outcomes. Conclusions: Marital problems may be especially reactive to parental depressive symptomatology, so that mediational processes affecting child functioning become evident even in family contexts of relatively low risk.

VectorBase: an updated bioinformatics resource for invertebrate vectors and other organisms related with human diseases

Abstract: VectorBase is a National Institute of Allergy and Infectious Diseases supported Bioinformatics Resource Center (BRC) for invertebrate vectors of human pathogens Now in its 11th year, VectorBase currently hosts the genomes of 35 organisms including a number of non-vectors for comparative analysis Hosted data range from genome assemblies with annotated gene features, transcript and protein expression data to population genetics including variation and insecticide-resistance phenotypes Here we describe improvements to our resource and the set of tools available for interrogating and accessing BRC data including the integration of Web Apollo to facilitate community annotation and providing Galaxy to support user-based workflows VectorBase also actively supports our community through hands-on workshops and online tutorials All information and data are freely available from our website at https://wwwvectorbaseorg/