The popular compact disk entitled Auditory Demonstrations, sponsored by the Acoustical Society of America, includes a number of demonstrations that lead to quantitative results. Those demonstrations are evaluated here in the context of a sizeable class in a lecture room. Demonstrations concern masking, loudness, and pitch; specifically they are numbers 2, 3, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, ...

We present observations of the young stars TW Hya and HD 100546 made with the Australia Telescope Compact Array at 89 GHz with ∼ 2 ′′ resolution and ∼ 3 mJy continuum sensitivity. Compact thermal dust continuum emission is detected from disks surrounding both stars. HD 100546 also shows hints of extended emission, presumably a residual protostellar envelope, which is also visible in scattered l...

We apply the methods recently developed for computation of type IIA disk instantons using mirror symmetry to a large class of D-branes wrapped over Lagrangian cycles of non-compact Calabi-Yau 3-folds. Along the way we clarify the notion of “flat coordinates” for the boundary theory. We also discover an integer IR ambiguity needed to define the quantum theory of D-branes wrapped over non-compact...

Hubble Space Telescope Advanced Camera for Surveys images of the young binary GG Tauri and its circumbinary disk in V and I bandpasses were obtained in 2002 and are the most detailed of this system to date. They confirm features previously seen in the disk including: a " gap " apparently caused by shadowing from circumstellar material; an asymmetrical distribution of light about the line of sig...

From observations of edge-on, late-type galaxies, we present morphological evidence that some nuclear star clusters have experienced in situ star formation. We find three nuclear clusters that, viewed from the edge-on perspective, have both a compact disk-like component and a spheroidal component. In each cluster, the disk components are closely aligned with the major axis of the host galaxy an...

On May 15, 2009, I sent a letter with documents on an accompanying compact disk to the California Fish and Game Commission on behalf of the Center for Biological Diversity to apprise the Commission of scientific studies pertinent to the Commission's reconsideration of the Petition to List the American Pika under the California Endangered Species Act. That letter discussed the U.S. Fish and Wild...

We present observations of the young stars TW Hya and HD 100546 made with the Australia Telescope Compact Array at 89 GHz with 200 resolution and 3 mJy continuum sensitivity. Compact thermal dust continuum emission is detected from disks surrounding both stars. HD 100546 also shows hints of extended emission, presumably a residual protostellar envelope, which is also visible in scattered light ...

For a compact spacelike constant mean curvature surface with nonempty boundary in the threedimensional Lorentz–Minkowski space, we introduce a rotation index of the lines of curvature at the boundary umbilical point, which was developed by Choe [‘Sufficient conditions for constant mean curvature surfaces to be round’, Math. Ann. 323(1) (2002), 143–156]. Using the concept of the rotation index a...

If the dark matter in galactic halos is made up of compact, macroscopic objects (MO), such as black holes with M M O >> M stars , gravitational scattering will lead to kinematic heating of the stars. Observational constraints on the amount of heating in the disk of the Milky Way put upper limits on M M O < ∼ 10 6.3 M ⊙. We find limits that are three orders of magnitude more stringent by examini...

We discuss a refinement of triangular factorization for unitary matrix-valued functions on S. 0. Introduction The purpose of this paper is to generalize Theorems 0.1 and 0.2 below to general simply connected compact Lie groups. Throughout the paper K̇ is a simply connected compact Lie group, Ġ is the complexification, and LfinK̇ (LfinĠ) denotes the group consisting of functions S → K̇ (Ġ, respecti...