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A Study of Approaches that Explain Scientific Progress
, M.Sc. Thesis Sharif University of Technology ; Taqavi, Mostafa (Supervisor)
Abstract
What is meant by the scientific progress and how can it be explained? In response to this question, four distinct approaches—epistemic, semantic, problem-solving, and Noetic—have been presented. Each of these approaches defines the goal of science in a specific way: the epistemic approach considers the accumulation of scientific knowledge as the goal; the semantic approach views the goal as nearness to truth; the problem-solving approach sees the goal as solving more problems; and the Noetic approach sets the goal as increasing understanding. In this study, each approach is critically examined, and two central claims are made. The first claim asserts that to explain the scientific progress,...
Non-Coherent DOA estimation Via majorization-minimization using sign information
, Article IEEE Signal Processing Letters ; Volume 29 , 2022 , Pages 892-896 ; 10709908 (ISSN) ; Javaheri, A ; Zayyani, H ; Marvasti, F ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2022
Abstract
In this letter, the problem of non-coherent direction of arrival (DOA) estimation is investigated exploiting the sign of the measurements in order to resolve the inherent ambiguity of the problem. Although the phase values are inaccurate, the sign of real and imaginary parts of the measurements will most likely remain correct under limited phase errors. Furthermore, a new approach for solving the problem is proposed employing a modified version of the Majorization-Minimization (MM) technique, without any prior information about the number of incident signals. Some theoretical analyses of our proposed algorithm are also provided in the paper. Finally, the simulation results are presented,...