Power spectrum for perturbations in an inflationary model for a closed universe
Sign Up to like & getrecommendations! Published in 2022 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-022-02918-3
Abstract: We derive the power spectrum of primordial quantum fluctuations in an inflationary universe for curvature parameter $${\mathcal {K}}=1$$ K = 1 . This is achieved through a Born–Oppenheimer type of approximation scheme from the Wheeler–DeWitt… read more here.
Keywords: power spectrum; model closed; spectrum perturbations; model ... See more keywords
A mixed integer nonlinear model for closed-loop supply chains with incentive and proximity based product returns
Sign Up to like & getrecommendations! Published in 2017 at "Chemical engineering transactions"
DOI: 10.3303/cet1761006
Abstract: Electronics firms in different locations are being required to collect used products due to environmental and health hazards. In order to meet environmental requirements, firms carry out collection activities and provide incentive offers to attract… read more here.
Keywords: model closed; product; mixed integer; product returns ... See more keywords