Inputs to motoneurons can be amplified and prolonged by noninactivating conductances mediating “persistent inward currents” or PICs. These currents, first identified by Schwindt and Crill (1977), are generated through voltage-dependent channels that have been thought to be confined to the membrane of the motoneuronal dendritic tree (see Heckman et al. 2003). In this issue of the Journal of Neur...

In the first part of this paper, we study the heat equation and the heat kernel associated with the Heckman-Opdam Laplacian in the compact, Weyl-group invariant setting. In particular, this Laplacian gives rise to a Feller-Markov semigroup on a fundamental alcove of the affine Weyl group. The second part of the paper is devoted to the Segal-Bargmann transform in our context. A Hilbert space of ...

The UCD community has made this article openly available. Please share how this access benefits you. Your story matters! (@ucd_oa) Some rights reserved. For more information, please see the item record link above. Title Instrumental variables in models with multiple outcomes : the general unordered case Author(s) Heckman, James J.; Urzua, Sergio; Vytlacil, Edward Publication date 2008-12-15 Ser...

28. Hogg, N., Llarley-Usmar, J. M., Wilson, M. T. and Moncada. S. (1992) Hiochem. J. 281.419-424 29. Kadi, K., Heckman, J. S., Hush, K. M. and Freeman, H. A. (1991) Arch. Hiochem. Hiophys. 288,481-487 30. Moreno. J. J. and Pryor, W. A. (1992) Inactivation of aI-proteinase inhibitor by peroxynitrite. Chern. Kes. Toxicol. 5, 425-431 31. Jessup, W., Mohr. Ll., Gieseg, S. P., Dean. K. T. and Stocke...

T he paper uses Heckman model to examine the statistical importance of over 140 independent variables on the Olympic performance of all countries participating in the Summer Olympic Games from Sydney 2000 to Rio 2016. We find that countries which export more products have a higher likelihood of winning an Olympic medal than their counterparts exporting fewer products, and explain why...

Hello all! The editorial board of the Canadian Geriatrics Journal is delighted to present the research abstracts from the 7 th Canadian Consensus Conference on Dementia, which just wrapped up in Vancouver. Both as a member of the CCD executive and as editor of the CGJ, I am pleased to help disseminate the latest in Canadian dementia-related research. Additionally, this issue contains a number o...

We consider identification and estimation in a nonparametric triangular system with a binary endogenous regressor and nonseparable errors. For identification we take a control function approach utilizing the Dynkin system idea developed in Jun, Pinkse, and Xu (2011, JPX11) and extended in Kédagni and Mourifie (2014, KM14), by which we articulate various tradeoff relations among continuity, mono...

A t the beginning of kindergarten, the math and reading achievement gaps between children in the bottom and top income quintiles amount to more than a full standard deviation. Early childhood education programs provide child care services and may facilitate the labor market careers of parents, but their greatest potential value is as a human capital investment in young children, particularly ch...