Linfieldpdx, 2011

Linfieldpdx, an annual newsletter for Linfield College\u27s nursing and health sciences alumni and friends, features stories about alumni, the campus, and programs. Included in this issue: notes from the Dean nursing meets cyclo-cross new faces around campus alumni residents at Legacy Lloydena V. Grimes award why scholarships matte

Linfieldpdx, Fall 2008

Linfieldpdx, an annual newsletter for Linfield College\u27s nursing and health sciences alumni and friends, features stories about alumni, the campus, and programs. Included in this issue: notes from the Director, Chair, and Dean Simlab campus new

Linfieldpdx, 2010

Linfieldpdx, an annual newsletter for Linfield College\u27s nursing and health sciences alumni and friends, features stories about alumni, the campus, and programs. Included in this issue: a column from the interim director global health viewpoints campus new

The threshold for integer homology in random d-complexes

Let Y ~ Y_d(n,p) denote the Bernoulli random d-dimensional simplicial complex. We answer a question of Linial and Meshulam from 2003, showing that the threshold for vanishing of homology H_{d-1}(Y; Z) is less than 80d log n / n. This bound is tight, up to a constant factor.Comment: 12 pages, updated to include an additional torsion group boun

A Computer Algebra System for R: Macaulay2 and the m2r Package

Algebraic methods have a long history in statistics. Apart from the ubiquitous applications of linear algebra, the most visible manifestations of modern algebra in statistics are found in the young field of algebraic statistics, which brings tools from commutative algebra and algebraic geometry to bear on statistical problems. Now over two decades old, algebraic statistics has applications in a wide range of theoretical and applied statistical domains. Nevertheless, algebraic statistical methods are still not mainstream, mostly due to a lack of easy off-the-shelf implementations. In this article we debut m2r, an R package that connects R to Macaulay2 through a persistent back-end socket connection running locally or on a cloud server. Topics range from basic use of m2r to applications and design philosophy

Glioblastoma Mimicking an Arteriovenous Malformation

Abnormal cerebral vasculature can be a manifestation of a vascular malformation or a neoplastic process. We report the case of a patient with angiography-negative subarachnoid hemorrhage (SAH) who re-presented 3 years later with a large intraparenchymal hemorrhage. Although imaging following the intraparenchymal hemorrhage was suggestive of arteriovenous malformation, the patient was ultimately found to have an extensive glioblastoma associated with abnormal tumor vasculature. The case emphasizes the need for magnetic resonance imaging to investigate angiography-negative SAH in suspicious cases to rule out occult etiologies, such as neoplasm. We also discuss diagnostic pitfalls when brain tumors are associated with hemorrhage and abnormal vasculature