In this paper, the authors address the issue of automatic tag attachment to the documents distributed over a P2P network aiming at improving the efficiency of file search in such networks. The proposed scheme combines text clustering with a modified tag extraction algorithm, and is executed in a fully distributed manner. Meanwhile, the optimal cluster number can also be fixed automatically thro...

A novel biotechnology approach by combining deacetylation biocatalysis with elicitation of immobilized Penicillium canescens (IPC) in Astragalus membranaceus hairy root cultures (AMHRCs) was proposed for the elevated production of astragaloside IV (AG IV). The highest AG IV accumulation was achieved in 36-day-old AMHRCs co-cultured with IPC for 60 h, which resulted in the enhanced production of...

With the continuous development of social economy and standard of living, people are placing more and more emphasize on the health problem. Moreover, the idea that health can not be brought is filtering into people's minds, which influences people's life style, making people's interests to the health issue. This provides a stage to the health club which is operated for profits. Varieties of fit...

This paper advocates a method for real-time physical deformation and arbitrary cutting simulation of heterogeneous objects with multi-material distribution, whose originality centers on the tight coupling of domain-specific finite element method (FEM) 1 and material-distance-aware meshless approach in a CUDA-centric parallel simulation framework. We employ hierarchical hexahedron serving as bas...

In this paper, we consider a semiparametric single index panel data model with cross–sectional dependence, high–dimensionality and stationarity. Meanwhile, we allow fixed effects to be correlated with the regressors to capture unobservable heterogeneity. Under a general spatial error dependence structure, we then establish some consistent closed–form estimates for both the unknown parameters an...

While the current food security is fulfilled in China, the substantial nitrogen fertilizer use has caused many far-reaching environmental problems. Therefore, reforming the fertilizer management is the key toward sustainable agriculture for 1.3 billion people. The present study is intended to test the applicability of a nitrogen fertilizer management approach for corn production developed in U....

Absorber is an important component in various optical devices. Here we report a novel type of asymmetric absorber in the visible and near-infrared spectrum which is based on lossy Bragg stacks. The lossy Bragg stacks can achieve near-perfect absorption at one side and high reflection at the other within the narrow bands (several nm) of resonance wavelengths, whereas display almost identical abs...

We propose the Forward-Backward Synergistic Acceleration Pursuit (FBSAP) algorithm in this paper. The FBSAP algorithm inherits the advantages of the Forward-Backward Pursuit (FBP) algorithm, which has high success rate of reconstruction and does not necessitate the sparsity level as a priori condition. Moreover, it solves the problem of FBP that the atom can be selected only by the fixed step s...

The whole metabolism of a sponge holobiont and the respective contributions of prokaryotic and eukaryotic symbionts and their associations with the sponge host remain largely unclear. Meanwhile, compared with shallow water sponges, deep-sea sponges are rarely understood. Here we report the metagenomic exploration of deep-sea sponge Neamphius huxleyi [corrected] . at the whole community level. M...

This paper proposes a control method of the modular multilevel converter based high voltage direct current (MMC-HVDC) system for the grid voltage stability instead of using a static synchronous compensator (Statcom). The d-axis current component is used to control the grid voltage via the reactive power. Meanwhile, the q-axis current component is employed to control the active power according t...