BACKGROUND The contribution of sports related factors to predicting long-term physical activity (PA) are unclear. The purpose of this study is to examine tracking of PA during key transition periods in youth and to determine the longitudinal associations between sports club participation and PA. METHODS Participants (n = 873, baseline age 10 to 18 years) completed self-report surveys in 2009 ...

Blood pressure (BP) changes with age. We conducted a cross-sectional study in rural Chinese adults to investigate: (1) what is the relationship between age, arterial stiffness, and BP in Chinese men and women; and (2) to what degree can the age-BP relationship be explained by arterial stiffness, controlling for other covariables. These analyses included a total of 1688 subjects (males/females: ...

This paper presents an investigation on the capability of gust load alleviation by normal microjet. The numerical method integrates unsteady Reynolds averaged Navier-Stokes (URANS) solutions, structural dynamic equations motion and Field Velocity Method. is verified for responses rigid elastic models. results microjet are validated against experimental previous data. Load control capabilities e...

Genetically identical cells can show phenotypic variability. This is often caused by stochastic events that originate from randomness in biochemical processes involving in gene expression and other extrinsic cellular processes. From an engineering perspective, there have been efforts focused on theory and experiments to control noise levels by perturbing and replacing gene network components. H...

We investigate a conjecture of Paul Erdős, the last unsolved problem among those proposed in his landmark paper [2]. The conjecture states that there exists an absolute constant C > 0 such that, if v1, . . . , vn are unit vectors in a Hilbert space, then at least C 2 n of all ∈ {−1, 1} are such that | Pn i=1 ivi |≤ 1. We disprove the conjecture. For Hilbert spaces of dimension d > 2, the counte...

StyleGAN2 was demonstrated to be a powerful image generation engine that supports semantic editing. However, in order manipulate real-world image, one first needs able retrieve its corresponding latent representation StyleGAN’s space is decoded an as close possible the desired image. For many images, does not exist, which necessitates tuning of generator network. We present per-image optimizati...

The whole enterprise of spin compositions can be recast as simple enumerative combinatoric problems. We show here that enumerative combinatorics (EC)\citep{book:Stanley-2011} is a natural setting for spin composition, and easily leads to very general analytic formulae -- many of which hitherto not present in the literature. Based on it, we propose three general methods for computing spin multip...

The “D” matrices for all states of the two fundamental representations and octet are shown in the generalized Euler angle parameterization. The raising and lowering operators are given in terms of linear combinations of the left invariant vector fields of the group manifold in this parameterization. Using these differential operators the highest weight state of an arbitrary irreducible represen...