H
Harold M. Hastings
Researcher at Hofstra University
Publications - 97
Citations - 3131
Harold M. Hastings is an academic researcher from Hofstra University. The author has contributed to research in topics: Cofibration & Homotopy. The author has an hindex of 21, co-authored 96 publications receiving 2955 citations. Previous affiliations of Harold M. Hastings include Long Island Jewish Medical Center & Bard College at Simon's Rock.
Papers
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Journal ArticleDOI
Multiple mechanisms of spiral wave breakup in a model of cardiac electrical activity
TL;DR: A simplified ionic model of the cardiac action potential (AP), which can be fitted to a wide variety of experimentally and numerically obtained mesoscopic characteristics of cardiac tissue such as AP shape and restitution of AP duration and conduction velocity, is used to explain many different mechanisms of spiral wave breakup which in principle can occur in cardiac tissue as discussed by the authors.
Journal ArticleDOI
Multiple mechanisms of spiral wave breakup in a model of cardiac electrical activity
TL;DR: A simplified ionic model of the cardiac action potential (AP), which can be fitted to a wide variety of experimentally and numerically obtained mesoscopic characteristics of cardiac tissue, is used to explain many different mechanisms of spiral wave breakup which in principle can occur in cardiac tissue.
Journal ArticleDOI
Mechanisms for discordant alternans.
TL;DR: Discordant Alternans Mechanism has the potential to produce larger alternans of the ECG T wave than concordant alternans, but its mechanism is unknown.
Book
Cech and Steenrod Homotopy Theories with Applications to Geometric Topology
TL;DR: The model structure on pro-spaces and the homotopy inverse limit are discussed in this paper, along with the algebraic topology of pro-C and the Steenrod theory on infinite dimensional manifolds.
Journal ArticleDOI
Expression of interleukin‐1β in human breast carcinoma
Liang Jin,Ren Qi Yuan,Alexander Fuchs,Yan Yao,Ansamma Joseph,Ralph H. Schwall,Stuart J. Schnitt,Anthony Guida,Harold M. Hastings,Janet Andres,Gary Turkel,Peter J. Polverini,Itzhak D. Goldberg,Eliot M. Rosen +13 more
TL;DR: In this article, the IL-1β content in tissue extracts from >200 invasive breast carcinomas and smaller numbers of ductal carcinoma in situ (DCIS) and benign lesions was measured by an enzyme-linked immunoadsorbent assay and analyzed to determine whether these values were correlated with the contents of scatter factor (SF) (an invasogenic and angiogenic cytokine), von Willebrand's factor (VWF) (a marker of endothelium), thrombospondin-1 (TSP1), and tumor necrosis