5,844 research outputs found

    Counting Integer flows in Networks

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    This paper discusses new analytic algorithms and software for the enumeration of all integer flows inside a network. Concrete applications abound in graph theory \cite{Jaeger}, representation theory \cite{kirillov}, and statistics \cite{persi}. Our methods clearly surpass traditional exhaustive enumeration and other algorithms and can even yield formulas when the input data contains some parameters. These methods are based on the study of rational functions with poles on arrangements of hyperplanes

    STRATEGI KOPING PADA PASIEN STROKE

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    Background: Stroke causes a lot of impact for the sufferer. The impact experienced by stroke patients varies greatly, for example patients can experience physical disability, limited activity, lifestyle changes, cognitive disorders, emotional disorders, or even total dependence for a long time. Stroke can affect the psychological condition of patients such as feeling isolated, unstable emotions to depression. These changes require the individual's ability to overcome these problems or what we know as coping strategies. Purpose: Know coping strategies in stroke patients. Method: The research method used by the researcher uses qualitative methods with case studies to the subject to examine the scientific situation regarding the problems experienced by the subject, in this study validated by triangulation of direct interviews to 3 participants. Results: 5 themes were obtained, namely 1) Emotional response, 2) Stress handler, 3) Family support, 4) Seeking social support, 5) Spiritual improvement. Conclusion: Patients have good coping strategies in managing their stress, so that they can support the healing process

    Triangular mass matrices for quarks and leptons

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    We assume that all quark and lepton 3×33 \times 3 mass matrices which appear in the standard model lagrangian (after spontaneous symmetry breaking) with neutrinos treated as Dirac patricles have the triangular form. Such matrices have not only less non-zero elements (three of them are equal to zero) but also lead to very asymmetrical decomposition into one diagonal and two unitary matrices for quarks and leptons. We also assume that unitary matrices which transform flavor into definite mass states for right handed components (weakly non-interacting) in the same weak isodoublet are equal. Using all available experimental data on quark and lepton masses and mixing angles, treating in the universal way quarks and leptons, we determine the triangular mass matrices for up and down type quarks, neutrinos and charged leptons and as a consequence mixing matrices for left-handed and right handed components. As the result of the fit we get predictions for the neutrino masses including smallest neutrino mass. The calculations without CP violation and with inclusion of this effect in quark sector are also presented.Comment: 12 pages, no figure

    Coherent states for a quantum particle on a circle

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    The coherent states for the quantum particle on the circle are introduced. The Bargmann representation within the actual treatment provides the representation of the algebra [J^,U]=U[\hat J,U]=U, where UU is unitary, which is a direct consequence of the Heisenberg algebra [ϕ^,J^]=i[\hat \phi, \hat J]=i, but it is more adequate for the study of the circlular motion.Comment: 23 pages LaTeX, uses ioplppt.st

    A new proof of the theorems of Lin-Zaidenberg and Abhyankar-Moh-Suzuki

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    Using the theory of minimal models of quasi-projective surfaces we give a new proof of the theorem of Lin-Zaidenberg which says that every topologically contractible algebraic curve in the complex affine plane has equation Xn=YmX^n=Y^m in some algebraic coordinates on the plane. This gives also a proof of the theorem of Abhyankar-Moh-Suzuki concerning embeddings of the complex line into the plane. Independently, we show how to deduce the latter theorem from basic properties of Q\mathbb{Q}-acyclic surfaces.Comment: 12 pages, 1 figur

    UU Antimonopoli Indonesia: suatu Telaah Orientasi dan Implikasinya terhadap Perilaku Pelaku Bisnis dan Konsumen

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    To minimalize the effect ofthis code from unfairness conduct of bussinessmen, KPPU and court should control its application. However, the making ofthis code has contributed positively the economical aspect of national development

    Probing GPDs in photoproduction processes at hadron colliders

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    Generalized parton distributions (GPDs) enter QCD factorization theorems for hard exclusive reactions. They encode rich information about hadron partonic structure. We explore a possibility to constrain GPDs in experiments at LHC considering two different exclusive processes: the timelike Compton scattering and the photoproduction of heavy vector mesons.Comment: 6 pages, 2 figures; presented at PHOTON 2015: International Conference on the Structure and the Interactions of the Photon, Novosibirsk, Russia, 15 - 19 June, 2015. arXiv admin note: text overlap with arXiv:1411.375

    Sorry Buddy, But Your Name Isn\u27t on the List: Fear and the Ethics of Organ Donation in Film

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    The fear of death and illness is a powerful motivator. When taking into account the ethical reasoning that drives organ transplantation and procurement practices, it is persuasive enough to sway minds and corrupt pure reason. And so this paper will uncover how fear of illness and death shape answers to the ethical questions that arise in transplant debates and how these debates are in turn raised in the ethical dilemmas portrayed by popular American films. This paper will examine recent films such as The Island, and Never Let Me Go to illustrate how the ethical dilemmas associated with organ transplantation, and the fear engendered by these depictions of it express the ethical debates of the American culture. It will determine that the shortage of available organs lies at the root of this fear, and then analyze how it inspires two general views of transplantation debates. It creates a fear that motivates the organ recipient and a fear which motivates the potential organ donor
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