Cuplength estimates in Morse cohomology

The main goal of this paper is to give a unified treatment to many known cuplength estimates. As the base case, we prove that for $C^0$-perturbations of a function which is Morse-Bott along a closed submanifold, the number of critical points is bounded below in terms of the cuplength of that critical submanifold. As we work with rather general assumptions the proof also applies in a variety of Floer settings. For example, this proves lower bounds for the number of fixed points of Hamiltonian diffeomorphisms, Hamiltonian chords for Lagrangian submanifolds, translated points of contactomorphisms, and solutions to a Dirac-type equation.Comment: 25 pages, 1 figure, appeared online in Journal of Topology and Analysi

Taste-Changing in Staggered Quarks

We present results from a systematic perturbative investigation of taste-changing in improved staggered quarks. We show one-loop taste-changing interactions can be removed perturbatively by an effective four-quark term and calculate the necessary coefficients.Comment: 3 pages using espcrc2.sty and amsmath.sty, 1 Feynman diagram using feynmp.sty for Lattice2002(improve

AIDS, Access to Medicines, and the Different Roles of the Brazilian and South African Governments in Global Health Governance

The present article illustrates how the main actors in global health governance (GHG)— governments, nongovernmental organizations (NGOs), intergovernmental organizations (IOs), and transnational pharmaceutical companies (TNPCs)—have been interacting and, as a result, modifying the global health architecture in general and AIDS treatment in particular. Using the concept of “power types” (Keohane/Martin) and “interfaces” (Norman Long), the authors examine the conflicts among major GHG actors that have arisen surrounding the limited access to medicines for fighting HIV/AIDS basically as a result of the Agreement on Trade Related Intellectual Property Rights (TRIPS), in force since 1995. They then analyze the efforts of Brazil and South Africa to obtain fast and low-cost access to antiretroviral medication against AIDS. They conclude that while policy makers in the two countries have used different approaches to tackle the AIDS problem, they have been able, with the support of NGOs, to modify TRIPS and change some WTO rules at the global level along legal interfaces. At the national level the results of the fight against AIDS have been encouraging for Brazil, but not for South Africa, where authorities denied the challenge for a prolonged period of time. The authors see the different outcomes as a consequence of Brazil’s ability to combine discoursive, legal, administrative, and resource-based interfaces.global health governance; HIV/AIDS in Brazil and South Africa; discoursive, legal, organizational and resource-based interfaces; WTO; transnational pharmaceutical companies; NGOs

Membrane traffic in the post-genomic era

A multi-parametric genetic screening approach sheds light on integrated control of the endocytic pathway in mammalian cells

Initial results of finger imaging using Photoacoustic Computed Tomography

We present a photoacoustic computed tomography investigation on a healthy human finger, to image blood vessels with a focus on vascularity across the interphalangeal joints. The cross-sectional images were acquired using an imager specifically developed for this purpose. The images show rich detail of the digital blood vessels with diameters between 100 $\mu$m and 1.5 mm in various orientations and at various depths. Different vascular layers in the skin including the subpapillary plexus could also be visualized. Acoustic reflections on the finger bone of photoacoustic signals from skin were visible in sequential slice images along the finger except at the location of the joint gaps. Not unexpectedly, the healthy synovial membrane at the joint gaps was not detected due to its small size and normal vascularization. Future research will concentrate on studying digits afflicted with rheumatoid arthritis to detect the inflamed synovium with its heightened vascularization, whose characteristics are potential markers for disease activity.Comment: 2 figure

Original and Cumulative Prospect Theory: A Discussion of Empirical Differences

This paper discusses di€erences between prospect theory and cumulative prospect theory. It shows that cumulative prospect theory is not merely a formal correction of some theoretical problems in prospect theory, but it also gives di€erent predictions. Some experiments by Lola Lopes are re-analyzed, and are demonstrated to favor cumulative prospect theory over prospect theory. It turns out that the mathematical form of cumulative prospect theory is well suited for modeling the psychological phenomenon of diminishing sensitivity. *c 1997 by John Wiley & Sons, Ltd. KEY WORD