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Institution

National Institute of Technology Calicut

EducationKozhikode, Kerala, India
About: National Institute of Technology Calicut is a education organization based out in Kozhikode, Kerala, India. It is known for research contribution in the topics: Control theory & Machining. The organization has 3627 authors who have published 4638 publications receiving 50830 citations. The organization is also known as: Calicut Regional Engineering College & NIT Calicut.


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Journal ArticleDOI
TL;DR: The various applications of HRV and different linear, frequency domain, wavelet domain, nonlinear techniques used for the analysis of the HRV are discussed.
Abstract: Heart rate variability (HRV) is a reliable reflection of the many physiological factors modulating the normal rhythm of the heart. In fact, they provide a powerful means of observing the interplay between the sympathetic and parasympathetic nervous systems. It shows that the structure generating the signal is not only simply linear, but also involves nonlinear contributions. Heart rate (HR) is a nonstationary signal; its variation may contain indicators of current disease, or warnings about impending cardiac diseases. The indicators may be present at all times or may occur at random-during certain intervals of the day. It is strenuous and time consuming to study and pinpoint abnormalities in voluminous data collected over several hours. Hence, HR variation analysis (instantaneous HR against time axis) has become a popular noninvasive tool for assessing the activities of the autonomic nervous system. Computer based analytical tools for in-depth study of data over daylong intervals can be very useful in diagnostics. Therefore, the HRV signal parameters, extracted and analyzed using computers, are highly useful in diagnostics. In this paper, we have discussed the various applications of HRV and different linear, frequency domain, wavelet domain, nonlinear techniques used for the analysis of the HRV.

2,344 citations

Journal ArticleDOI
01 Mar 2005-Fuel
TL;DR: A two-step transesterification process is developed to convert the high free fatty acids (FFA) oils to its mono-esters in this article, where the important properties of biodiesel such as specific gravity, flash point, cloud point and pour point are found out and compared with that of diesel.

1,209 citations

Journal ArticleDOI
TL;DR: In this paper, the authors reviewed the production and characterization of vegetable oil as well as the experimental work carried out in various countries in this field, and the scope and challenges being faced in this area of research are clearly described.

789 citations

Journal ArticleDOI
TL;DR: In this paper, a two-step esterification method was developed to produce biodiesel from high FFA vegetable oils, which consists of acid-catalyzed pretreatment followed by an alkaline-caralyzed transesterification.

746 citations

Journal ArticleDOI
TL;DR: A 3-class classification problem to differentiate among glioma, meningioma and pituitary tumors, which form three prominent types of brain tumor is focused on, which adopts the concept of deep transfer learning and uses a pre-trained GoogLeNet to extract features from brain MRI images.

576 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202336
2022130
2021707
2020622
2019523
2018431