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161 results on '"UMASHANKAR S."'

1. ENHANCING LOW VOLTAGE RIDE THROUGH CAPABILITY IN UTILITY GRID CONNECTED SINGLE PHASE SOLAR PHOTOVOLTAIC SYSTEM

Author

RINI ANN JERIN A., MANU THOMAS, PALANISAMY K., and UMASHANKAR S.

Subjects
Low voltage ride-through, Single phase photovoltaic, Proportional resonant (PR) control, Harmonic compensator control, Renewable energy, Solar energy, Engineering (General). Civil engineering (General), TA1-2040, Technology (General), T1-995
Abstract

The steady rise in utility grid penetration of single phase solar photovoltaic system has contributed to the mandatory requirement of Low Voltage Ridethrough (LVRT) capability. LVRT capability provides stable grid integration during transient conditions. A seamless LVRT capability operation in a single phase photovoltaic system using peak value based fault detection and Orthogonal Signal Generation (OSG) based voltage sag detection is conducted. In this paper, two controllers are employed for two different operations. The PQ theory controller is used for power control operation and Proportional–Resonant (PR) with Harmonic Compensation (HC) controller is used for current control operation in LVRT. MATLAB/Simulink verifies the LVRT operation mode as per the grid code requirements to ride through voltage sag during fault condition. It is observed that the system is in operation during transient conditions and provides reactive support to ride through the fault.

Published
2018

3. Reviewing the Performance of an Improved Seven-Level Multilevel Inverter for Various Pulse Width Modulation Techniques

Author

Aroul, K., Umashankar, S., Prabhu, K. R., Sanjeevikumar, P., Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Kalam, Akhtar, editor, Das, Swagatam, editor, and Sharma, Kalpana, editor

Published
2018
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4. Modeling and Simulation of Synchronous Reluctance Motor for Pumping Application Using Field-Oriented Control

Author

Arun Shankar, V. K., Umashankar, S., Paramasivam, S., Sanjeevikumar, P., Venkatesh, Y., Angrisani, Leopoldo, Series editor, Arteaga, Marco, Series editor, Chakraborty, Samarjit, Series editor, Chen, Jiming, Series editor, Chen, Tan Kay, Series editor, Dillmann, Ruediger, Series editor, Duan, Haibin, Series editor, Ferrari, Gianluigi, Series editor, Ferre, Manuel, Series editor, Hirche, Sandra, Series editor, Jabbari, Faryar, Series editor, Kacprzyk, Janusz, Series editor, Khamis, Alaa, Series editor, Kroeger, Torsten, Series editor, Ming, Tan Cher, Series editor, Minker, Wolfgang, Series editor, Misra, Pradeep, Series editor, Möller, Sebastian, Series editor, Mukhopadhyay, Subhas Chandra, Series editor, Ning, Cun-Zheng, Series editor, Nishida, Toyoaki, Series editor, Panigrahi, Bijaya Ketan, Series editor, Pascucci, Federica, Series editor, Samad, Tariq, Series editor, Seng, Gan Woon, Series editor, Veiga, Germano, Series editor, Wu, Haitao, Series editor, Zhang, Junjie James, Series editor, Konkani, Avinash, editor, Bera, Rabindranath, editor, and Paul, Samrat, editor

Published
2018
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5. Investigation of Doubly Fed Induction Generator Behavior Under Symmetrical and Asymmetrical Fault Conditions

Author

Tamvada, Karthik, Umashankar, S., Sanjeevikumar, P., Angrisani, Leopoldo, Series editor, Arteaga, Marco, Series editor, Chakraborty, Samarjit, Series editor, Chen, Jiming, Series editor, Chen, Tan Kay, Series editor, Dillmann, Ruediger, Series editor, Duan, Haibin, Series editor, Ferrari, Gianluigi, Series editor, Ferre, Manuel, Series editor, Hirche, Sandra, Series editor, Jabbari, Faryar, Series editor, Kacprzyk, Janusz, Series editor, Khamis, Alaa, Series editor, Kroeger, Torsten, Series editor, Ming, Tan Cher, Series editor, Minker, Wolfgang, Series editor, Misra, Pradeep, Series editor, Möller, Sebastian, Series editor, Mukhopadhyay, Subhas Chandra, Series editor, Ning, Cun-Zheng, Series editor, Nishida, Toyoaki, Series editor, Panigrahi, Bijaya Ketan, Series editor, Pascucci, Federica, Series editor, Samad, Tariq, Series editor, Seng, Gan Woon, Series editor, Veiga, Germano, Series editor, Wu, Haitao, Series editor, Zhang, Junjie James, Series editor, Konkani, Avinash, editor, Bera, Rabindranath, editor, and Paul, Samrat, editor

Published
2018
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6. Investigation of Direct Torque Control-Based Synchronous Reluctance Motor Drive for Pumping

Author

Arun Shankar, V. K., Umashankar, S., Paramasivam, S., Sanjeevikumar, P., Venkatesh, K., Angrisani, Leopoldo, Series editor, Arteaga, Marco, Series editor, Chakraborty, Samarjit, Series editor, Chen, Jiming, Series editor, Chen, Tan Kay, Series editor, Dillmann, Ruediger, Series editor, Duan, Haibin, Series editor, Ferrari, Gianluigi, Series editor, Ferre, Manuel, Series editor, Hirche, Sandra, Series editor, Jabbari, Faryar, Series editor, Kacprzyk, Janusz, Series editor, Khamis, Alaa, Series editor, Kroeger, Torsten, Series editor, Ming, Tan Cher, Series editor, Minker, Wolfgang, Series editor, Misra, Pradeep, Series editor, Möller, Sebastian, Series editor, Mukhopadhyay, Subhas Chandra, Series editor, Ning, Cun-Zheng, Series editor, Nishida, Toyoaki, Series editor, Panigrahi, Bijaya Ketan, Series editor, Pascucci, Federica, Series editor, Samad, Tariq, Series editor, Seng, Gan Woon, Series editor, Veiga, Germano, Series editor, Wu, Haitao, Series editor, Zhang, Junjie James, Series editor, Konkani, Avinash, editor, Bera, Rabindranath, editor, and Paul, Samrat, editor

Published
2018
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7. Comparative Analysis of Feed-Forward and Synchronous Reference Frame Control-Based Dynamic Voltage Restorer

Author

Rini Ann Jerin, A., Palanisamy, K., Umashankar, S., Sanjeevikumar, Padmanaban, Angrisani, Leopoldo, Series editor, Arteaga, Marco, Series editor, Chakraborty, Samarjit, Series editor, Chen, Jiming, Series editor, Chen, Tan Kay, Series editor, Dillmann, Ruediger, Series editor, Duan, Haibin, Series editor, Ferrari, Gianluigi, Series editor, Ferre, Manuel, Series editor, Hirche, Sandra, Series editor, Jabbari, Faryar, Series editor, Kacprzyk, Janusz, Series editor, Khamis, Alaa, Series editor, Kroeger, Torsten, Series editor, Ming, Tan Cher, Series editor, Minker, Wolfgang, Series editor, Misra, Pradeep, Series editor, Möller, Sebastian, Series editor, Mukhopadhyay, Subhas Chandra, Series editor, Ning, Cun-Zheng, Series editor, Nishida, Toyoaki, Series editor, Panigrahi, Bijaya Ketan, Series editor, Pascucci, Federica, Series editor, Samad, Tariq, Series editor, Seng, Gan Woon, Series editor, Veiga, Germano, Series editor, Wu, Haitao, Series editor, Zhang, Junjie James, Series editor, Garg, Amik, editor, Bhoi, Akash Kumar, editor, Sanjeevikumar, Padmanaban, editor, and Kamani, K. K., editor

Published
2018
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14. Grammar Rule-Based Sentiment Categorization Model for Tamil Tweets

Author

Ravishankar, Nadana, Shriram, R., Vengatesan, K. B., Mahajan, S. B., Sanjeevikumar, P., Umashankar, S., Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Dash, Subhransu Sekhar, editor, Naidu, Paruchuri Chandra Babu, editor, Bayindir, Ramazan, editor, and Das, Swagatam, editor

Published
2018
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15. Fuzzy Rotor Side Converter Control of Doubly Fed Induction Generator

Author

Tamvada, Karthik, Umashankar, S., Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Dash, Subhransu Sekhar, editor, Naidu, Paruchuri Chandra Babu, editor, Bayindir, Ramazan, editor, and Das, Swagatam, editor

Published
2018
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18. Analysis of Power Quality in Hostel and Academic Buildings of Educational Institute

Author

Rajesh, Mallakuntla, Palanisamy, K., Umashankar, S., Meikandasivam, S., Paramasivam, S., Kacprzyk, Janusz, Series editor, Pal, Nikhil R., Advisory editor, Bello Perez, Rafael, Advisory editor, Corchado, Emilio S., Advisory editor, Hagras, Hani, Advisory editor, Kóczy, László T., Series editor, Kreinovich, Vladik, Advisory editor, Lin, Chin-Teng, Advisory editor, Lu, Jie, Advisory editor, Melin, Patricia, Advisory editor, Nedjah, Nadia, Advisory editor, Nguyen, Ngoc Thanh, Advisory editor, Wang, Jun, Advisory editor, Dash, Subhransu Sekhar, editor, Vijayakumar, K., editor, Panigrahi, Bijaya Ketan, editor, and Das, Swagatam, editor

Published
2017
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24. Epidemiology of Escherichia coli bacteraemia in England: results of an enhanced sentinel surveillance programme

Author

Sen, R.A., Mifsud, A., O'Driscoll, J., Brown, N., Trundle, Cheryl, Allison, D., Twagira, M., Gnanarajah, Awad-El Kariem, F., Rajendran, R., Umashankar, S., Horne, G., Claxton, A., Cheesbrough, J., Kirby, A., Mulla, R., Teare, L., Rosmarin, C., Gopal Rao, G., Richards, D., Boswell, T., Bowler, I., O'Connor, L., Jenks, P., Wyllie, S., Virgincar, N., Hopkins, S., Dallantonia, M., Rodgers, A., Ellis, R., Bowley, J., Kiernan, M., Knox, K., Riley, U., Kelsey, M., Wilson, P., Shetty, N., Orendi, J., Pasztor, M., Abernethy, J., Guy, R., Sheridan, E.A., Wilcox, M.H., Johnson, A.P., and Hope, R.

Published
2017
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25. Effectiveness of using picture description technique for grammar: An experimental study

Author

Dr. Umashankar S, Rifka Nusrath GM, and AFA Halik

Abstract

Learning and teaching grammar seem to be a challenge for most of the English as Second Language (ESL)/English as a Foreign Language (EFL) learners and teachers. There is a need to use creative and innovative techniques to teach grammar and tense. This study was conducted with the aim of exploring the effectiveness of using picture description technique to teach grammar and in particular the present continuous sentence pattern. This study was a descriptive survey research and mixed methods were applied in data collection. In this study, 25 students of Grade 10 and 10 ESL teachers of T/Mu/Al Hilal Central College, Mutur were randomly selected as sample population. The data collection instruments were an interview and a questionnaire. According to the opinions survey among the students and teachers, majority of the students express their lack of interest in learning grammar since interesting and creative games and techniques are not used in grammar lessons, and they accepted that the use of picture description technique can improve their ability of constructing sentence pattern and understanding the use of present continuous tense. Further, according to the findings of the questionnaire, majority of the teachers accepted that many English teachers do not use any techniques to teach grammar and tense, and the use of picture description technique can improve students’ proper understanding of present continuous tense. In general, in teaching and learning English, both teachers and students encounter various difficulties such as lack of teaching materials, students’ lack of interest, students’ insufficient basic knowledge in English, lack of facilities to apply different techniques and games, over-crowded classroom, use of deductive method to teach grammar and tense and teaching tense with less use of interesting games and techniques. This problem can be overcome and students’ proper understanding of present continuous tense can be improved when the suggested recommendations in this study are implemented.

Published
2022
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40. Interventional study to improve the haemoglobin level using moringa olifera powder on anaemic children in selected district of Karnataka

Author

Umashankar S and Priya T Nandimath

Subjects
Moringa, Meal, Malnutrition, business.industry, Environmental health, Psychological intervention, medicine, Case-control study, Nutritional behavior, Haemoglobin levels, medicine.disease, business, Nutritional anemia
Abstract

Anaemia is a serious concern for the young children as it affects the cognitive performance, development (cognitive and behavioral), coordination, language development and scholastic achievement. Various interventions have been undertaken during last 50 years such as green revolution, PDS, ICDS, etc. Nutritional deficiencies remain with the same burden and nutritional anemia being one of the major concerns in India. Hence it becomes quite evident hat alternative strategies should be tried to improve the nutritional anemia and reduce the morbidity associated with it, such as use of locally available, traditional food to increase the bioavailability of iron and to improve the nutritional behavior through nutritional education. The present study was proposed with an aim to assess the role of Moringa Olifera powder in improving haemoglobin level among the anaemic children. A case control study was conducted at a village, Chikaballapur district of Karnataka. 312 school children were screened for Haemoglobin level; Out of 312 students 124 school children fulfilled the inclusion criteria. 66 children were recruited to control group and interventional group respectively. The children in the interventional group were administered with 3gms per day (1/2 a tea spoon) of Moringa Olifera powder along with their food for 3 months and regular supplements provided at school. Control group was advised to continue with the regular meal and regular supplements provided at the school. Haemoglobin levels were estimated before and 3 months after the intervention. Out of 58 children in the interventional group 33 (56.9%) were females and 25 (43.1%) were males and out of 66 children in the control group 34 (51.55) were females and 32(48.5%) were males. The mean Haemoglobin level of the children in the interventional group before the intervention was 10.332 which increased to 10.967 after the intervention. Similarly the mean Haemoglobin level of children in the control group before the intervention was 9.950 which remained 9.873 after the intervention. The increase in the mean haemoglobin level in the interventional group was significant with the p value of 0.045. After the intervention the children with moderate anaemia decreased from 38(65.5%) to 23(39.7%) and 13 (22.4%) children turned normal in the experimental group and in the control group the children with moderate anaemia increased from 52(78.8%) to 55(81.8%). There a statistically significant marginal improvement in haemoglobin level in the interventional group after three months.

Published
2021
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44. Evaluation of the Pathways for Survivors program to address breast cancer survivorship associated distress

Author

Hamolsky D, Chien Aj, Umashankar S, Hadeler Ek, Rugo Hs, LJ Esserman, Mamounas Me, M. Melisko, Jimmy Hwang, Madeline B. Matthys, Hicks G, and Wong Ec

Subjects
Oncology, medicine.medical_specialty, Distress, Text mining, Breast cancer, business.industry, Internal medicine, Survivorship curve, medicine, business, medicine.disease
Abstract

Purpose: Breast cancer patients not infrequently experience escalation of anxiety after completing curative treatment. This study evaluated the acceptability and psychological impact of a one-day workshop emphasizing behavioral strategies involving intention and self-efficacy.Methods: Breast cancer survivors attending a one-day Pathways for Survivors workshop, provided feedback, and completed electronic quality of life (QOL) questionnaires at baseline, 1- and 6-weeks, and 6-months post workshop. Attendees’ baseline QOL scores were compared to follow up (FUP) scores. Scores from patients receiving routine FUP care were also compiled as a reference population.Results: Seventy-seven patients attended one of nine workshops. Mean satisfaction was 9.7/10 with the workshop, and 9.96/10 with the moderator. Participants’ baseline mean Patient-Reported Outcomes Measurement Information System (PROMIS) anxiety and depression scores were 57.8 ± 6.9 and 55.3 ± 7.5, significantly higher than routine FUP care patients (49.1 ± 8.3 and 47.3 ± 8 respectively). PROMIS anxiety and depression scores decreased and Happiness Index Profile (HIP-10), measuring intention and resiliency, increased significantly at 1- and 6-week FUPs.Conclusions: Pathways for Survivors was favorably received. Anxiety and depression decreased significantly at 1- and 6-weeks post workshop and remained below baseline at 6 months. Increased HIP-10 scores support that patients incorporated skills from the workshop. A one-day workshop led by a lay moderator significantly improved several psychological measures, suggesting it may be a useful and time-efficient strategy to improve QOL in breast cancer survivors. We are investigating whether an abbreviated “booster” of the intervention at a later date could further improve and maintain QOL gains.

Published
2021
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45. Artificial Intelligence and Drones to Combat COVID - 19

Author

Preethika, T., Vaishnavi, P., Agnishwar, J., Padmanathan, K., Umashankar, S., Annapoorani, S., Subash, M., and Aruloli, K.

Subjects
general_engineering
Abstract

Globally, an approximate of 380,000 patients succumbed to death due to the pandemic COVID-19 which also infected more than six million people since December 2019. Not sparing anyone, COVID-19 infections are widely reported among healthcare professionals, sanitation workers and researchers too while global leaders and various governments are providing their best in defending their citizens against this airborne and contact spread virus. In order to contain the virus and protect millions of lives from this deadly coronavirus, there is a need to have a combination of advanced engineering technology and medical facilities. Application of applied science, engineering and technology diffuse almost every aspect of contemporary living. Grasping the fundamentals to determine humanity's most imperative and forthcoming challenges is essential. Artificial Intelligence, the technology that learns, adapts and reciprocates the actions according to the situations, finds optimum position in the fight against corona virus and acts as a powerful tool against this pandemic. In this research article, the authors discusses how Artificial Intelligence (AI) can be leveraged to fight the deadly virus. The research paper further discusses the efficient utilization of AI across the globe to help in testing, treating and serving the population in these hard times. This manuscript focuses on the potential impact of the process in which AI can be implemented to prevent, test and treat.

Published
2020

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