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  "Description": "The functions are designed to find the efficient\nmean-variance frontier or portfolio weights for static\nportfolio (called Markowitz portfolio) analysis in resource\neconomics or nature conservation. Using the nonlinear\nprogramming solver ('Rsolnp'), this package deals with the\nquadratic minimization of the variance-covariances without\nshorting (i.e., non-negative portfolio weights) studied in Ando\nand Mallory (2012) <doi:10.1073/pnas.1114653109>. See the\nexamples, testing versions, and more details from:\n<https://github.com/ysd2004/portn>.",
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