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Ma Q, Manikandan C, Elamaran V, Thilagaraj M. The Utility of Simulink Subsystems in Handling and Processing of Biomedical Signals and Images. j med imaging hlth inform 2022. [DOI: 10.1166/jmihi.2022.3734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To model, simulate, and analyze multi-domain dynamical systems, Simulink, which is a Matlab-based graphical programming environment, can be used effectively. Due to the drag-drop facility, accessible graphic user interface components, and zero coding environments, Simulink becomes the
most used tool both in industry and academia. The design cycle time of any real-time systems can be reduced using Simulink than other software tools. This article focuses mainly on the utility behind the subsystems such as enabled subsystem, triggered subsystem, triggered and enabled subsystem,
and control flow subsystem in biomedical signal and image processing. Image segmentation using enabled subsystem, voiced/unvoiced classification using triggered subsystem, and the computation of root-mean-square (RMS) amplitude using If Action subsystem are implemented using breast cancer
image and human voice signal. The Matlab 9.4 tool is used for experimental simulation with the biomedical signals and images.
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Affiliation(s)
- Qiufang Ma
- College of Big Data, Qingdao Huanghai University, Qingdao, Shandong, 266427, China
| | - C. Manikandan
- Department of Electronics and Communication Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed University, Thanjavur 613001, Tamilnadu, India
| | - V. Elamaran
- Department of Electronics and Communication Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed University, Thanjavur 613001, Tamilnadu, India
| | - M. Thilagaraj
- Department of Electronics and Instrumentation Engineering, Karpagam College of Engineering, Coimbatore 641001, Tamilnadu, India
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Zhong M, Yang Y, Zhou Y, Octavian Postolache M, Chandrasekar M, Venkat Babu G, Manikandan C, Balaji VS, Saravanan S, Elamaran V. Advanced Digital Signal Processing Techniques on the Classification of the Heart Sound Signals. j med imaging hlth inform 2020. [DOI: 10.1166/jmihi.2020.3127] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Speech processing subject primarily depends on the digital signal processing (DSP) methods, such as convolution, discrete Fourier transform (DFT), fast Fourier transforms (FFT), finite impulse response (FIR) and infinite impulse response (IIR) filters, FFT recursive and non-recursive
digital filters, FFT processing, random signal theory, adaptive filters, upsampling and downsampling, etc. Recursive and non-recursive digital filters are primarily deployed to absorb the signal of interest signals and to block the unwanted signals (noise). Broadly, low-pass, high-pass, band-pass,
and band-stop filters are implemented for filtering functions. In frequent, the DSP theories can be used for further biomedical engineering domains like biomedical imaging (MRI, ultrasound, CT, X-ray, PET) and genetic signal analysis-cum-processing too. In this article, the experiments such
as voiced/unvoiced detection, formants estimation using FFT and spectrograms, pitch estimation and tracking and yes/no sound classification are used. Also, the analysis of normal/abnormal heart sound signals using simple energy computation and the zero-crossing rate and their results are obtained.
For the entire study, the Matlab R2018a tool is used to obtain the simulation results. At last, the criticism, feedbacks, comments, reactions from the student are detailed for the exceptional development of the course.
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Affiliation(s)
- Meisu Zhong
- Institute of Logistics Science & Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Yongsheng Yang
- Institute of Logistics Science & Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Yamin Zhou
- Institute of Logistics Science & Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | | | - M. Chandrasekar
- School of Electrical Electronics Engineering, Shanmugha Arts Science Technology Research Academy Deemed University, Thanjavur 613403, India
| | - G. Venkat Babu
- School of Electrical Electronics Engineering, Shanmugha Arts Science Technology Research Academy Deemed University, Thanjavur 613403, India
| | - C. Manikandan
- School of Electrical Electronics Engineering, Shanmugha Arts Science Technology Research Academy Deemed University, Thanjavur 613403, India
| | - V. S. Balaji
- School of Electrical Electronics Engineering, Shanmugha Arts Science Technology Research Academy Deemed University, Thanjavur 613403, India
| | - S. Saravanan
- Department of Information Science and Engineering, CMR Institute of Technology, Bangalore 560037, India
| | - V. Elamaran
- School of Electrical Electronics Engineering, Shanmugha Arts Science Technology Research Academy Deemed University, Thanjavur 613403, India
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Kochhar P, Manikandan C, Ravikumar G, Dwarkanath P, Sheela CN, George S, Thomas A, Crasta J, Thomas T, Kurpad AV, Mukhopadhyay A. Placental expression of leptin: fetal sex-independent relation with human placental growth. Eur J Clin Nutr 2020; 74:1603-1612. [PMID: 32382074 DOI: 10.1038/s41430-020-0649-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 11/09/2022]
Abstract
OBJECTIVES Leptin (LEP) is a vital placental hormone that is known to affect different aspects of placental function and fetal development. The present study aimed to determine the association of placental LEP transcript abundance with maternal, placental, and newborn parameters. SUBJECTS/METHODS In this retrospective case-control study, placental samples (n = 105) were collected from small (SGA) and appropriate (AGA) for gestational age full-term singleton pregnancies (n = 44 SGA and n = 61 AGA). Placental transcript abundance of LEP was assessed by real-time quantitative PCR after normalization to a reference gene panel. LEP methylation was measured using a quantitative MethyLight assay in a subset of samples (n = 54). RESULTS Placental LEP transcript abundance was negatively and significantly associated with placental weight (β = -3.883, P = 0.015). This association continued to be significant in the SGA group (β = -10.332, P = 0.001), both in female (β = -15.423, P = 0.021) and male births (β = -10.029, P = 0.007). LEP transcript abundance was not associated with LEP methylation levels (Spearman's ρ = 0.148, P = 0.287). CONCLUSION We conclude that placental upregulation of LEP is an integral and fetal sex-independent component of placental growth restriction, which can be potentially targeted through maternal dietary modifications to improve fetoplacental growth.
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Affiliation(s)
- P Kochhar
- Division of Nutrition, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India
| | - C Manikandan
- Division of Nutrition, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India.,School of Biosciences and Technology; Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology, Vellore, India
| | - G Ravikumar
- Department of Pathology, St John's Medical College Hospital, Bangalore, India
| | - P Dwarkanath
- Division of Nutrition, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India
| | - C N Sheela
- Department of Obstetrics and Gynaecology, St John's Medical College Hospital, Bangalore, India
| | - S George
- Department of Obstetrics and Gynaecology, St John's Medical College Hospital, Bangalore, India
| | - A Thomas
- Department of Obstetrics and Gynaecology, St John's Medical College Hospital, Bangalore, India
| | - J Crasta
- Department of Pathology, St John's Medical College Hospital, Bangalore, India
| | - T Thomas
- Department of Biostatistics, St. John's Medical College Hospital, Bangalore, India
| | - A V Kurpad
- Division of Nutrition, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India
| | - A Mukhopadhyay
- Division of Nutrition, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India.
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Sivakumar S, Sasikanth P, Mohanram S, Manikandan C, Siddharthan A. Property Enhancement of Transformer Oil with Suspension of TiO 2 Nanoparticles. j nanofluids 2014. [DOI: 10.1166/jon.2014.1117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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