3,297 research outputs found

    On the consistency of the three-dimensional noncommutative supersymmetric Yang-Mills theory

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    We study the one-loop quantum corrections to the U(N) noncommutative supersymmetric Yang-Mills theory in three spacetime dimensions (NCSYM3_3). We show that the cancellation of the dangerous UV/IR infrared divergences only takes place in the fundamental representation of the gauge group. Furthermore, in the one-loop approximation, the would be subleading UV and UV/IR infrared divergences are shown to vanish.Comment: 8 pages and 2 figure

    Computing Low-Cost Convex Partitions for Planar Point Sets with Randomized Local Search and Constraint Programming (CG Challenge)

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    The Minimum Convex Partition problem (MCP) is a problem in which a point-set is used as the vertices for a planar subdivision, whose number of edges is to be minimized. In this planar subdivision, the outer face is the convex hull of the point-set, and the interior faces are convex. In this paper, we discuss and implement the approach to this problem using randomized local search, and different initialization techniques based on maximizing collinearity. We also solve small instances optimally using a SAT formulation. We explored this as part of the 2020 Computational Geometry Challenge, where we placed first as Team UBC

    Visual perception of egocentric distance as assessed by triangulation.

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    A strategy to identify housekeeping genes suitable for analysis in breast cancer diseases

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    Standard curve and serial dilutions for nHKGs and tHKGs. The x axis represents the dilution series (1:800, 1:400, 1:200 and 1:100) and the y axis represents the mean of CT for each gene. The correlation coefficient r is given for each gene inside parentheses. (PDF 53 kb

    Breaking Good: Fracture Modes for Realtime Destruction

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    Drawing a direct analogy with the well-studied vibration or elastic modes, we introduce an object's fracture modes, which constitute its preferred or most natural ways of breaking. We formulate a sparsified eigenvalue problem, which we solve iteratively to obtain the n lowest-energy modes. These can be precomputed for a given shape to obtain a prefracture pattern that can substitute the state of the art for realtime applications at no runtime cost but significantly greater realism. Furthermore, any realtime impact can be projected onto our modes to obtain impact-dependent fracture patterns without the need for any online crack propagation simulation. We not only introduce this theoretically novel concept, but also show its fundamental and practical superiority in a diverse set of examples and contexts

    Limitations to the use of tooth wear as a means of ageing Eurasian badgers, Meles meles

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    L'observation de blaireaux d'ages connus montre que le critère d'usure des dents n'est pas une mesure fiable pour les blaireaux d'une population à Wytham (Oxfordshire).Cette divergence de résultats semble due aux variations du régime alimentaire qui entrainent des taux d'usure différent

    A module-agnostic reference software development process for different levels of higher-education study

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    Several software development methodologies and practices are taught in computer science and software engineering higher education degrees. This happens through individual modules and capstone projects and sometimes with participation from real clients. Different from industry, where processes are usually prescribed, students encounter company-agnostic artefacts and practises, often having to choose between the available options. Feedback from tutors, students and clients indicates this to be a challenge, with students often confused trying to mix-and-match different practices without the proper consideration of how they would work together. This paper introduces the SHU Development Process, covering all software development stages, that is instantiated into different levels of detail for students as they progress through their degree studies. The SHU Dev Process provides structured guidance to software development practices that can be followed through their chosen process flow or cherry-picked by students as needed. It has been created through a student-led project over multiple years. First applied during the academic year 2021/2 and iterated upon for 2022/3 in a capstone project module at Sheffield Hallam University, the process was evaluated annually by surveying students across different courses and levels of study. In initial surveys, students responded positively, and our experience provides valuable insight that other practitioners may draw upon to implement and evaluate a similar resource in the future

    ECCO - A new initiative to support early-career researchers in the complement field

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    Research on the complement system, like most areas of immunology, has seen tremendous progress over the last decades. Further advances in the complement field will rely on the next generation of scientific leaders, which are today's early-career researchers (ECRs). ECRs are emerging scientists who obtained their PhD degree within the past five years. They represent a distinct population within the scientific community, and accordingly have unique needs. Unfortunately, ECRs are faced with significant challenges that require customized solutions. The current paper provides a snapshot of the major obstacles ECRs face, such as an unhealthy work-life balance, lack of mentor and peer support, and uncertain career prospects. Efforts must consequently be taken to ensure stability and success of ECRs, not only to benefit these researchers in the early stages of their career, but the entire field of complement research. The Early-Career Complementologists (ECCO) was, therefore, launched as a new Task Force to support ECRs in the complement field. This new initiative aims to support and connect ECRs in the complement field worldwide. Furthermore, ECCO is supported by both the International Complement Society (ICS) and the European Complement Network (ECN); two professional societies led by scientists investigating the complement system
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