QCD hadron spectrum with domain wall fermions

We present the QCD hadron spectrum for the cases of both quenched and two-flavor dynamical domain wall fermions. We compare the results obtained using the Wilson gauge action and a renormalization group improved gauge action. Finite volume effects and the dependence on the finite extent of the fifth dimension are discussed.Comment: LATTICE99(QCD spectrum), 3 pages, 2 figures. Work done with CU and RIKEN/BNL/CU collaboratio

Chiral Symmetry Breaking for Domain Wall Fermions in Quenched Lattice QCD

The domain wall fermion formulation exhibits full chiral symmetry for finite lattice spacing except for the effects of mixing between the domain walls. Close to the continuum limit these symmetry breaking effects should be described by a single residual mass. We determine this mass from the conservation law obeyed by the conserved axial current in quenched simulations with beta=5.7 and 6.0 and domain wall separations varying between 12 and 48 on 8^3x32 and 16^3x32 lattices. Using the resulting values for the residual mass we perform two complete and independent calculations of the pion decay constant. Good agreement is found between these two methods and with experiment.Comment: 4 pages, 6 figures, Lattice 2000 (Chiral Fermions), RBC Collaboratio

Investigating Genetic Interactions Between Two Key Meiotic Genes xnd-1 and him-17, in C. elegans

Meiotic chromosomes segregation errors in the oocyte are the principal risk factor in miscarriage, congenital birth defects and age-related fertility decrease. Aneuploidy from meiotic chromosomes segregation is a major underlying cause for human chromosomal abnormalities. Previous studies identified several key DNA recombination genes in meiosis and mitosis in both human and other species, including but not limited to SPO-11, MRE-11, RAD-50 etc. Mutations in these genes associate with cancers in human. Although mutations or variations of some meiotic genes in species, such as Saccharomyces cerevisiae, Drosophila melanogaster and Caenorhabditis elegans, are discovered to function in DNA recombination, no specific genes were studied in human meiotic nondisjunction. Public Health Significance: Miscarriages, infertility and trisomy pregnancies are among the most common public health issues around the world. The goal of this research is to understand potential mechanism of meiotic chromosomal nondisjunction with C. elegans model. This research shows that HIM-17 and XND-1 interact in the same pathway when double-strand breaks (DSBs) are formed. Further studies should investigate how HIM-17 and XND-1regulate HIM-5 in this pathway and other pathways in regulating HIM-

Studies of protein structure in solution and protein folding using synchrotron small-angle x-ray scattering

Synchrotron small angle x-ray scattering (SAXS) has been applied to the structural study of several biological systems, including the nitrogenase complex, the heat shock cognate protein (hsc70), and lysozyme folding. The structural information revealed from the SAXS experiments is complementary to information obtained by other physical and biochemical methods, and adds to our knowledge and understanding of these systems

Translation and the Canon of Greek Tragedy in Chinese Literature

In their article Translation and the Canon of Greek Tragedy in Chinese Literature Rongnü Chen and Lingling Zhao discuss when and how ancient Greek drama were introduced and merged into Chinese literature. Since Aeschylus\u27s Prometheus Bound was first translated into Chinese and published in 1932 up to now, it has been translated eight times in China from 1932 to 2013. Starting from the Chinese translations and reception of Prometheus Bound, Chen and Zhao explore why so many translators have chosen to translate it in the past eighty years. Chen and Zhao also discuss how these translating activities advanced the construction of modern Chinese literature

StoryDroid: Automated Generation of Storyboard for Android Apps

Mobile apps are now ubiquitous. Before developing a new app, the development team usually endeavors painstaking efforts to review many existing apps with similar purposes. The review process is crucial in the sense that it reduces market risks and provides inspiration for app development. However, manual exploration of hundreds of existing apps by different roles (e.g., product manager, UI/UX designer, developer) in a development team can be ineffective. For example, it is difficult to completely explore all the functionalities of the app in a short period of time. Inspired by the conception of storyboard in movie production, we propose a system, StoryDroid, to automatically generate the storyboard for Android apps, and assist different roles to review apps efficiently. Specifically, StoryDroid extracts the activity transition graph and leverages static analysis techniques to render UI pages to visualize the storyboard with the rendered pages. The mapping relations between UI pages and the corresponding implementation code (e.g., layout code, activity code, and method hierarchy) are also provided to users. Our comprehensive experiments unveil that StoryDroid is effective and indeed useful to assist app development. The outputs of StoryDroid enable several potential applications, such as the recommendation of UI design and layout code