Study of the 2-d CP(N-1) models at \theta=0 and \pi

We present numerical results for 2-d CP(N-1) models at \theta=0 and \pi obtained in the D-theory formulation. In this formulation we construct an efficient cluster algorithm and we show numerical evidence for a first order transition for CP(N-1\geq 2) models at \theta = \pi. By a finite size scaling analysis, we also discuss the equivalence in the continuum limit of the D-theory formulation of the 2-d CP(N-1) models and the usual lattice definition.Comment: 3 pages, 2 figures. Talk presented at Lattice2004(spin), Fermilab, June 21-26, 200

Some Flexure Formulas and Diagrams for Reinforced Concrete Beams

A thesis submitted to the Department of Civil Engineering and the Faculty of the Graduate School in partial fulfillment of the Requirements for the Master's Degree

Petting Fetishes

Petting Fetishes: Fetishes and Gender Oppression in M. Butterfly and For Whom the Bell Tolls M. Butterfly by Henry Hwang and For Whom the Bell Tolls by Ernest Hemingway both portray ideas of masculinity in countries experiencing political turmoil. Both pieces express ideas of masculinity from the perspective of Western foreigners in newly developing political settings post World War (Hwang’s post WWII China and Hemmingway’s post WWI, pre WWII Spain). Hwang’s play depicts Gallimard’s personal and national perception through the lens of Orientalist masculinity. Hemmingway’s novel depicts hyper-nationalism and narcissism through Robert Jordan’s expressed ideas of self and masculinity. Although both pieces have been celebrated as acclaimed literary works, the rhetoric of fetishes and gender oppression have not been closely examined. My paper examines how the main characters in the two pieces express dehumanizing fetishized ideas and gender oppression in their rhetorical choices, especially the use of the terms of endearment. My essay explores ideas of masculinity, femininity, gender oppression, fetishes, and Western domination in these works and their ideological impact on readers

Letter to Sonora Dodd from Luther S. Beard, May 23, 1911

Letter to Sonora Dodd, from Luther S. Beard, News Editor for The North American.https://digitalcommons.whitworth.edu/fathers-day-correspondence/1011/thumbnail.jp

From Spin Ladders to the 2-d O(3) Model at Non-Zero Density

The numerical simulation of various field theories at non-zero chemical potential suffers from severe complex action problems. In particular, QCD at non-zero quark density can presently not be simulated for that reason. A similar complex action problem arises in the 2-d O(3) model -- a toy model for QCD. Here we construct the 2-d O(3) model at non-zero density via dimensional reduction of an antiferromagnetic quantum spin ladder in a magnetic field. The complex action problem of the 2-d O(3) model manifests itself as a sign problem of the ladder system. This sign problem is solved completely with a meron-cluster algorithm.Comment: Based on a talk by U.-J. Wiese, 6 pages, 12 figures, to be published in computer physics communication

Palmitoyl Acyltransferase DHHC21 Mediates Endothelial Dysfunction in Systemic Inflammatory Response Syndrome

Endothelial dysfunction is a hallmark of systemic inflammatory response underlying multiple organ failure. Here we report a novel function of DHHC-containing palmitoyl acyltransferases (PATs) in mediating endothelial inflammation. Pharmacological inhibition of PATs attenuates barrier leakage and leucocyte adhesion induced by endothelial junction hyperpermeability and ICAM-1 expression during inflammation. Among 11 DHHCs detected in vascular endothelium, DHHC21 is required for barrier response. Mice with DHHC21 function deficiency (Zdhhc21dep/dep) exhibit marked resistance to injury, characterized by reduced plasma leakage, decreased leucocyte adhesion and ameliorated lung pathology, culminating in improved survival. Endothelial cells from Zdhhc21dep/dep display blunted barrier dysfunction and leucocyte adhesion, whereas leucocytes from these mice did not show altered adhesiveness. Furthermore, inflammation enhances PLCb1 palmitoylation and signalling activity, effects significantly reduced in Zdhhc21dep/dep and rescued by DHHC21 overexpression. Likewise, overexpression of wild-type, not mutant, PLCb1 augments barrier dysfunction. Altogether, these data suggest the involvement of DHHC21-mediated PLCb1 palmitoylation in endothelial inflammation

Meron-Cluster Simulation of a Chiral Phase Transition with Staggered Fermions

We examine a (3+1)-dimensional model of staggered lattice fermions with a four-fermion interaction and Z(2) chiral symmetry using the Hamiltonian formulation. This model cannot be simulated with standard fermion algorithms because those suffer from a very severe sign problem. We use a new fermion simulation technique - the meron-cluster algorithm - which solves the sign problem and leads to high-precision numerical data. We investigate the finite temperature chiral phase transition and verify that it is in the universality class of the 3-d Ising model using finite-size scaling.Comment: 21 pages, 6 figure