we inverse the surface gravity data to recover subsurface 3d density distribution with two strategy. in the first strategy, we assumed wide density model bound for inverting gravity data and in the second strategy, the inversion procedure have been carried out by limited bound density. wediscretize the earth model into rectangular cells of constant andunidentified density. the number of cells i...

In contrast to long-held axioms of old age as a time of "doom and gloom," mounting evidence indicates an age-related positivity effect in attention and memory. However, several studies report inconsistent findings that raise critical questions about the effect's reliability, robustness, and potential moderators. To address these questions, we conducted a systematic meta-analysis of 100 empirica...

The positivity conditions of the spin density matrix constrain the spin observables of the reaction p̄p → ΛΛ, leading to model-independent, non-trivial inequalities. The formalism is briefly presented and examples of inequalities are provided.

We inverse the surface gravity data to recover subsurface 3D density distribution with two strategy. In the first strategy, we assumed wide density model bound for inverting gravity data and In the second strategy, the inversion procedure have been carried out by limited bound density. Wediscretize the earth model into rectangular cells of constant andunidentified density. The number of cells i...

Positivity bounds — constraints on any low-energy effective field theory imposed by the fundamental axioms of unitarity, causality and locality in UV have recently been used to constrain scalar-tensor theories dark energy. However, coupling matter fields has so far played a limited role. We show that demanding positivity when including interactions with standard leads further energy parameter s...

background cavitary pulmonary tuberculosis (tb) is rare in children. objectives the aim of this study was to evaluate the characteristics of cavitary pulmonary tb in children. patients and methods this retrospective study was conducted on 97 children less than 15 years old with pulmonary tb to assess the clinical characteristics and radiographic findings of patients with cavitary lesions. resul...

We establish a connection between the distribution functions of quarks in spin-one hadrons and the helicity matrix for forward scattering of antiquarks off spin-one hadrons. From positivity of this matrix we obtain inequality relations among the distribution functions. Analogous relations hold also for fragmentation functions. The bounds we obtained can be used to constrain estimates of unknown...

We derive new positivity bounds for low-energy effective field theories (EFTs) that are not invariant under Lorentz boosts. ``Positivity bounds'' the manifestation of certain fundamental properties in UV---to date, they have been used to constrain a wide variety EFTs; however, since existing require invariance directly applicable when this symmetry is broken, such as most cosmological and conde...

classical explicit finite difference schemes are unsuitable for the solution of the famous black-scholes partial differential equation, since they impose severe restrictions on the time step. furthermore, they may produce spurious oscillations in the solution. we propose a new scheme that is free of spurious oscillations and guarantees the positivity of the solution for arbitrary stepsizes. the...