663 research outputs found

    The Ninth Circuit Lands a Perfect 10 Applying Copyright Law to the Internet

    Get PDF
    The Ninth Circuit Court of Appeals issued three landmark decisions in 2007 that addressed how copyright protections apply to images that can be accessed over the Internet. Internet publisher Perfect 10 initiated these lawsuits based on allegations that its registered copyrights were infringed when unauthorized copies of its photographs appeared on third-party websites where they could be viewed, downloaded, and purchased without payment to Perfect 10. This Article briefly summarizes the facts of these three cases, explains the central holdings of each decision, and then concludes with a discussion of the collective impact that the three decisions have on enforcement of copyrights in the Internet context and the policy reasons supporting the court\u27s decisions

    The Ninth Circuit Lands a Perfect 10 Applying Copyright Law to the Internet

    Get PDF
    The Ninth Circuit Court of Appeals issued three landmark decisions in 2007 that addressed how copyright protections apply to images that can be accessed over the Internet. Internet publisher Perfect 10 initiated these lawsuits based on allegations that its registered copyrights were infringed when unauthorized copies of its photographs appeared on third-party websites where they could be viewed, downloaded, and purchased without payment to Perfect 10. This Article briefly summarizes the facts of these three cases, explains the central holdings of each decision, and then concludes with a discussion of the collective impact that the three decisions have on enforcement of copyrights in the Internet context and the policy reasons supporting the court\u27s decisions

    GHz bandwidth electro-optics of a single self-assembled quantum dot in a charge-tunable device

    Get PDF
    The response of a single InGaAs quantum dot, embedded in a miniaturized charge-tunable device, to an applied GHz bandwidth electrical pulse is investigated via its optical response. Quantum dot response times of 1.0 \pm 0.1 ns are characterized via several different measurement techniques, demonstrating GHz bandwidth electrical control. Furthermore a novel optical detection technique based on resonant electron-hole pair generation in the hybridization region is used to map fully the voltage pulse experienced by the quantum dot, showing in this case a simple exponential rise.Comment: 7 pages, 4 figure

    Are interactions between epicardial adipose tissue, cardiac fibroblasts and cardiac myocytes instrumental in atrial fibrosis and atrial fibrillation?

    Get PDF
    Atrial fibrillation is very common among the elderly and/or obese. While myocardial fibrosis is associated with atrial fibrillation, the exact mechanisms within atrial myocytes and surrounding non-myocytes are not fully understood. This review considers the potential roles of myocardial fibroblasts and myofibroblasts in fibrosis and modulating myocyte electrophysiology through electrotonic interactions. Coupling with (myo)fibroblasts in vitro and in silico prolonged myocyte action potential duration and caused resting depolarization; an optogenetic study has verified in vivo that fibroblasts depolarized when coupled myocytes produced action potentials. This review also introduces another non-myocyte which may modulate both myocardial (myo)fibroblasts and myocytes: epicardial adipose tissue. Epicardial adipocytes are in intimate contact with myocytes and (myo)fibroblasts and may infiltrate the myocardium. Adipocytes secrete numerous adipokines which modulate (myo)fibroblast and myocyte physiology. These adipokines are protective in healthy hearts, preventing inflammation and fibrosis. However, adipokines secreted from adipocytes may switch to pro-inflammatory and pro-fibrotic, associated with reactive oxygen species generation. Pro-fibrotic adipokines stimulate myofibroblast differentiation, causing pronounced fibrosis in the epicardial adipose tissue and the myocardium. Adipose tissue also influences myocyte electrophysiology, via the adipokines and/or through electrotonic interactions. Deeper understanding of the interactions between myocytes and non-myocytes is important to understand and manage atrial fibrillation

    The Pharmacokinetics and Metabolic Physiology of Leptin

    Get PDF
    Leptin is a cytokine hormone with multiple roles throughout the body. Previously leptin distribution and pharmacokinetics were poorly defined; here the pharmacokinetics of leptin has been examined in male and female mice at physiologic doses. These data were also used to create a predictive model for leptin distribution, allowing targeted research on leptin in the future

    Increasing the power of genome wide association studies in natural populations using repeated measures - evaluation and implementation

    Get PDF
    1. Genomewide association studies (GWAS) enable detailed dissections of the genetic basis for organisms' ability to adapt to a changing environment. In long-term studies of natural populations, individuals are often marked at one point in their life and then repeatedly recaptured. It is therefore essential that a method for GWAS includes the process of repeated sampling. In a GWAS, the effects of thousands of single-nucleotide polymorphisms (SNPs) need to be fitted and any model development is constrained by the computational requirements. A method is therefore required that can fit a highly hierarchical model and at the same time is computationally fast enough to be useful. 2. Our method fits fixed SNP effects in a linear mixed model that can include both random polygenic effects and permanent environmental effects. In this way, the model can correct for population structure and model repeated measures. The covariance structure of the linear mixed model is first estimated and subsequently used in a generalized least squares setting to fit the SNP effects. The method was evaluated in a simulation study based on observed genotypes from a long-term study of collared flycatchers in Sweden. 3. The method we present here was successful in estimating permanent environmental effects from simulated repeated measures data. Additionally, we found that especially for variable phenotypes having large variation between years, the repeated measurements model has a substantial increase in power compared to a model using average phenotypes as a response. 4. The method is available in the R package RepeatABEL. It increases the power in GWAS having repeated measures, especially for long-term studies of natural populations, and the R implementation is expected to facilitate modelling of longitudinal data for studies of both animal and human populations.Peer reviewe
    • …
    corecore