Text Preprocessing Techniques | Chapter 6 | Text Mining Techniques with Applications, Edition 1

 

This unit provides a clear and detailed explanation of text preprocessing, including all the necessary steps involved in the process. The three primary components of text preprocessing are also explained with relevant examples. The steps involved in text preprocessing are enumerated and explained in detail. In addition, filtering, lemmatization, and stemming are briefly discussed, and appropriate examples are provided to ensure better understanding.

 

 

Author(s) Details

Adebola K. Ojo
Department of Computer Science, University of Ibadan, Ibadan, Nigeria.

 

Please see the book here:- https://doi.org/10.9734/bpi/mono/978-81-972870-5-3/CH7

Theoretical and Computational Analysis of Confinement Regimes in Spherical ZnO, CdS, and CdSe Colloidal Quantum Dots | Chapter 7 | Current Research Progress in Physical Science Vol. 7

Quantum dots (QDs) exhibit unique optical and electronic properties due to quantum confinement effects, making them promising candidates for various applications. This study investigates the confinement regimes of colloidal spherical ZnO, CdS, and CdSe quantum dots through computational simulations and theoretical analysis. Confinement regimes were delimited for each of the quantum dots based on the exciton Bohr radius of carriers of the respective semiconductor. The results delineate size-dependent confinement effects, revealing critical size ranges for strong, intermediate, and weak confinement regimes and their associated energy levels. These findings provide valuable insights into optimising quantum dot performance for applications in optoelectronics, field-effect transistors, and photonic technologies, advancing the understanding of these semiconductor nanostructures.

 

Author (s) Details

 

Harry, S. T.
Department of Physics, Ignatius Ajuru University of Education, Rumuolumeni, Port-Harcourt, Nigeria.

 

Please see the book here:- https://doi.org/10.9734/bpi/crpps/v7/4090