We present a simple and efficient numerical method for the simulation of the three-dimensional pyramid quantum dot heterostructure. The pyramid-shaped quantum dot is placed in a computational box with uniform mesh in Cartesian coordinates. The corresponding Schr€ odinger equation is discretized using the finite volume method and the interface conditions are incorporated into the discretization ...

Pyramid intersection is an efficient method for computing an approximate partial matching between two sets of feature vectors. We introduce a novel pyramid embedding based on a hierarchy of non-uniformly shaped bins that takes advantage of the underlying structure of the feature space and remains accurate even for sets with high-dimensional feature vectors. The matching similarity is computed i...

This work demonstrates the fabrication of metallic nanoprism (triangular nanostructure) arrays using a low-cost and high-throughput process. In the method, the triangular structure is defined by the shadow of a pyramid during angle evaporation of a metal etching mask. The pyramids were created by nanoimprint lithography in polymethylmethacrylate (PMMA) using a mould having an inverse-pyramid-sh...

This paper investigates how structures of pairwise pixel interactions are changing at subsequent levels of Gaussian or Laplacian pyramids representing spatially homogeneous image textures. Structural differences between the parent and child levels of the pyramid are analysed using the modelbased interaction maps (MBIM) describing relative interaction energies in a generic Gibbs random field mod...

Deep learning models with convolutional operators have received widespread attention for their good image denoising performance. However, since the operation prefers to extract local features, extracted features may lose some global information, such as texture, structure, and color characteristics, when object in is large. To address this issue, paper proposes an N-shaped neural network abilit...

Scaling represents successful diffusion that ensures sizeable impact and earnings from ICT innovations in emerging markets. Practice can still be shaped by dualistic views – innovation vs. diffusion, pilot vs. scale-up, lead firm vs. other actors, technical vs. social. Synthesising the literature that challenges these dualities, this paper creates a systemic perspective that is particularly app...

Plan-view and cross-sectional transmission electron microscopy have been used for a detailed study of the defects formed in capped InAs/GaAs quantum dot QD samples. Three main types of defects, V-shaped defects, single stacking faults, and stacking fault pyramids, were found to form under growth conditions that led to either very large, indium enriched, or coalesced islands. All three types of ...

Abstract In this work, highly sensitive D-shaped photonic crystal fiber (PCF) sensor with plasmonic pyramid grating is introduced and analyzed. The sensing mechanism depends on the coupling between fundamental core mode surface plasmon around grating. resonance frequency analyte refractive index (RI) which can be employed to detect RI changes. geometrical parameters of proposed PCF gold are stu...

In this paper, we introduce pyramid-adapted shearlet systems for the three-dimensional setting, and show how one can construct frames for L(R) with this particular shearlet structure. We then introduce a generalized three-dimensional cartoon-like image model class of piecewise C smooth functions with discontinuities on a C smooth surface with 1 < α ≤ 2 and show that pyramid-adapted shearlet sys...