Research hotspots and trends in nursing education from 2014 to 2020: A co-word analysis based on keywords.

Aims: To investigate research hotspots and trends in nursing education from 2014 to 2020, and provide references for researchers to understand the research status and developing trends in this field.

Design: A co-word analysis based on keywords.

Methods: Data were obtained from nursing education-related academic research articles that were retrieved through a literature search using PubMed during the period of 2014-2020.

Structural, thermal and broadband NIR emission properties of Nd/Pr/Ag NPs co-doped tellurite glass.

Nd/Pr co-doped tellurite glasses containing metallic Ag NPs were synthesized by melt-quenching and heat-treating techniques. The amorphous structural nature, fundamental vibrational units and good thermal stability of the prepared tellurite glasses were confirmed by X-ray diffraction (XRD) pattern, Raman spectrum and differential scanning calorimeter (DSC) curve, respectively. The precipitated Ag NPs in a glass matrix with an average diameter ∼5 nm were revealed by transmission electron microscopy (TEM) image, and the radiative property of Nd and Pr ions was evaluated from the absorption spectrum by Judd-Ofelt theory.

Ultra-broadband 1.0 μm band emission spectroscopy in Pr/Nd/Yb tri-doped tellurite glass.

Tellurite glasses doped with trivalent Pr, Nd and Yb ions were prepared using conventional high-temperature melt-quenching technique and their optical absorption, near-infrared emission, X-ray diffraction (XRD), Raman spectrum, and differential scanning calorimeter (DSC) curve were measured. Upon excitation at 488 nm, an ultra-broadband near-infrared emission extending from 800 to 1120 nm was found to appear owing to the overlapping of the emission bands centered at 900 and 1035 nm of Pr, 880 and 1060 nm of Nd as well as 978 nm of Yb, respectively. The energy transfer mechanism among Pr, Nd and Yb ions which was responsible for the observed ultra-broadband near-infrared emission was investigated to understand the luminescent phenomena.

No-Reference Image Blur Assessment Based on Discrete Orthogonal Moments.

Blur is a key determinant in the perception of image quality. Generally, blur causes spread of edges, which leads to shape changes in images. Discrete orthogonal moments have been widely studied as effective shape descriptors.

Detection of object-based manipulation by the statistical features of object contour.

Object-based manipulations, such as adding or removing objects for digital video, are usually malicious forgery operations. Compared with the conventional double MPEG compression or frame-based tampering, it makes more sense to detect these object-based manipulations because they might directly affect our understanding towards the video content. In this paper, a passive video forensics scheme is proposed for object-based forgery operations.

Optical and crystallization behavior in Dy3+ doped 40GeSe2-25Ga2Se3-35CsI glass.

Dy(3+) doped 40GeSe(2)-25Ga(2)Se(3)-35CsI (GGC) glass was synthesized, and optical spectrum, such as infrared transmission and Vis-Nir absorption was measured. Base on the Judd-Ofelt theory, the three Judd-Ofelt parameters Omega(t) (t=2, 4, 6) were calculated and the results were compared with other chalcogenide glasses. The small Omega(2) in GGC glass is ascribed to the weak covalency of Se-Dy bond.