Face recognition technology has advanced significantly in recent years due largely to the availability of large and increasingly complex training datasets for use in deep learning models. These ...datasets, however, typically comprise images scraped from news sites or social media platforms and, therefore, have limited utility in more advanced security, forensics, and military applications. These applications require lower resolution, longer ranges, and elevated viewpoints. To meet these critical needs, we collected and curated the first and second subsets of a large multi-modal biometric dataset designed for use in the research and development (R&D) of biometric recognition technologies under extremely challenging conditions. Thus far, the dataset includes more than 350,000 still images and over 1,300 hours of video footage of approximately 1,000 subjects. To collect this data, we used Nikon DSLR cameras, a variety of commercial surveillance cameras, specialized long-rage R&D cameras, and Group 1 and Group 2 UAV platforms. The goal is to support the development of algorithms capable of accurately recognizing people at ranges up to 1,000 m and from high angles of elevation. These advances will include improvements to the state of the art in face recognition and will support new research in the area of whole-body recognition using methods based on gait and anthropometry. This paper describes methods used to collect and curate the dataset, and the dataset's characteristics at the current stage.
In (Barbour, 1990) foundations for diffusion approximation via Stein's method are laid. This paper has been cited more than 130 times and is a cornerstone in the area of Stein's method. A semigroup ...argument is used therein to solve a Stein equation for Gaussian diffusion approximation. We prove that, contrary to the claim in (Barbour, 1990), the semigroup considered therein is not strongly continuous on the Banach space of continuous, real-valued functions on D0,1 growing slower than a cubic, equipped with an appropriate norm. We also provide a proof of the exact formulation of the solution to the Stein equation of interest, which does not require the aforementioned strong continuity. This shows that the main results of (Barbour, 1990) hold true.
It is known for over a 100 years that liver exhibits substantial polyploidy. The frequency of polyploid hepatocytes varies by age and species, but up to 90% of mouse hepatocytes and approximately 50% ...of human hepatocytes are polyploid. Significant alterations in the entire complement of chromosomes, and chromosome copy number variations are known to occur in the hepatocytes. Aneuploidy in the liver is ubiquitous, affecting 60% of hepatocytes in mice and 30-90% of hepatocytes in humans. Polyploidy and aneuploidy in the liver are closely linked, and the recently described ploidy conveyor model explains this relationship. Failed cytokinesis in diploid hepatocytes is the primary mechanism that gives rise to polyploid cells. Proliferating polyploid hepatocytes, which form multipolar spindles during cell division, generates reduced ploidy progeny and/or aneuploid daughters. Future work is required to elucidate the mechanisms regulating dynamic chromosome changes in the liver and to understand how these processes impact normal and abnormal liver functions.
In 1962 M.J. Wicks gave a precise description of the form a commutator could take in a free group or a free product and in 1973 extended this description to cover a product of two squares. ...Subsequently, lists of "Wicks forms" were found for arbitrary products of commutators and squares in free groups and free products, by Culler, Vdovina and other authors. Here we construct Wicks forms for products of commutators and squares in a hyperbolic group. As applications we give explicit lists of forms for a commutator and for a square, and find bounds on the lengths of conjugating elements required to express a quadratic tuple of elements of a hyperbolic group as a Wicks form.
Digital Media Contracts contains a collection of sample agreements, presenting annotated contracts from the digital media industry in typical formats for the industry. Included are agreements for ...digital downloads, user generated content, social networks, wireless apps and cloud computing. It goes beyond traditional precedents by giving practical, commercially-grounded commentary and background information to assist both readers intending to draft their own documents andthose looking for hands-on guidance when reviewing standard form documents received from other parties. Lawyers working in the digital media industry, private practitioners and in-house lawyers will find this work especially useful. Its jurisdictional scope is primarily focused on the UK with comparativecomments on similar agreements in the US, with input from lawyers based in the US. This comprehensive guide will provide practical support in the form of checklists and flow-charts, and will include additional supporting documents such as standard NDAs and sample Heads of Agreement.
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