The simplest models of inflation based on slow roll produce nearly scale invariant primordial power spectra (PPS). But there are also numerous models that predict radically broken scale invariant PPS. In particular, markedly cuspy dips in the PPS correspond to nulls where the perturbation amplitude, hence PPS, goes through a zero at a specific wavenumber. Near this wavenumber, the true quantum ...

In this paper we propose using manifolds modeled by probabilistic principle surfaces (PPS) to characterize and classify high-D data. The PPS can be thought of as a nonlinear probabilistic generalization of principal components, as it is designed to pass through the “middle” of the data. In fact, the PPS can map a manifold of any simple topology (as long as it can be described by a set of ordere...

BACKGROUND The Government of India declared TB as a notifiable disease in 2012. There is a paucity of information on the government's mandatory TB notification order from the perspective of private medical practitioners (PPs). OBJECTIVE To understand the awareness, perception and barriers on TB notification among PPs in Chennai, India. METHODS Total of 190 PPs were approached in their clini...

Proactive postsales service (PPS) refers to a supplier taking the initiative to contact a customer to provide service after a sale is complete. It is argued that PPS leads to faster delivery of service to a broader cross-section of customers than customer-initiated postsales service, or reactive postsales service. The authors argue that mental frames of customers and suppliers engaged in PPS ar...

Objectives: Oral pentosan polysulfate (PPS) is the only FDA-approved drug for interstitial cystitis (IC). Several studies have been conducted that show PPS will reduce IC symptoms. Sacral neuromodulation is a newer therapy for IC that has been FDAapproved in incontinent patients. Studies conducted in IC patients have shown that sacral neuromodulation reduces IC symptoms. Both therapies have doc...