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91 results on '"Tiwari, Smita"'

1. Multi-location evaluation of field pea in Indian climates: eco-phenological dynamics, crop-environment relationships, and identification of mega-environments

Author

Parihar, Ashok K., Hazra, Kali Krishna, Lamichaney, Amrit, Gupta, Debjyoti Sen, Kumar, Jitendra, Mishra, R. K., Singh, Anil K., Bhartiya, Anuradha, Sofi, Parvaze Ahmad, Lone, Ajaz A., Das, Sankar P., Yadav, Rajesh Kumar, Punia, S. S., Singh, A. K., Rai, Geeta, Mahto, C. S., Singh, Khajan, Tiwari, Smita, Saxena, Ashok K., Nair, Sunil Kumar, Parikh, Mangla, Sharma, Vijay, Mishra, Sudhakar P., Singh, Deepak, Gupta, Sanjeev, and Dixit, G. P.

Published
2024
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7. Improving Weed Detection Using Deep Learning Techniques

Author

Gupta, Shriti, Kumar, Mohit, Govinda Satyanarayana, B., Aribam, Sonia, Tiwari, Smita, Kaliyar, Rohit Kumar, Agarwal, Mohit, Ahuja, Nisha, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Mahapatra, Rajendra Prasad, editor, Panigrahi, B. K., editor, Kaushik, Brajesh K., editor, and Roy, Sudip, editor

Published
2021
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8. Tzveleviochloa uniyalii comb. nov. (Poaceae, Aveninae): taxonomic status and an update on distributions in India.

Author

Prasad, Dileshwar, Tiwari, Smita, Sharma, Sangam, Yadav, Rekha, and Agnihotri, Priyanka

Subjects
*BOTANY, *OVARIES, *PHOTOGRAPHS, *HABITATS, *COLOR
Abstract

Helictotrichon uniyalii corresponds to the genus Tzveleviochloa based on the lemma apex, lodicules, and ovary morphological features. Therefore, here, a new combination, Tzveleviochloa uniyalii, is proposed. In addition, we have provided amended descriptions, taxonomic notes, habitat, and distributional range updates with a new record of the flora of Himachal Pradesh, illustration, and color photographs. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Precise Positioning and Heading for Autonomous Scouting Robots in a Harsh Environment

Author

Obregón, David, Arnau, Raúl, Campo-Cossio, María, Arroyo-Parras, Juan G., Pattinson, Michael, Tiwari, Smita, Lluvia, Iker, Rey, Oscar, Verschoore, Jeroen, Lenza, Libor, Reyes, Joaquin, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2019
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16. Figure 5 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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17. Supplementary material 1 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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18. Figure 9 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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19. Figure 4 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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20. Figure 8 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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21. Figure 3 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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22. Figure 1 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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23. Figure 2 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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24. Figure 7 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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26. Figure 6 from: Prasad D, Kumar R, Jaiswal S, Yadav R, Tiwari S, Agnihotri P (2022) An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology. PhytoKeys 212: 135-155. https://doi.org/10.3897/phytokeys.212.89253

Author

Prasad, Dileshwar, primary, Kumar, Ravindra, additional, Jaiswal, Shubham, additional, Yadav, Rekha, additional, Tiwari, Smita, additional, and Agnihotri, Priyanka, additional

Published
2022
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36. An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology.

Author

Prasad, Dileshwar, Kumar, Ravindra, Jaiswal, Shubham, Yadav, Rekha, Tiwari, Smita, and Agnihotri, Priyanka

Subjects
MORPHOMETRICS, TAXONOMY, SPECIES, NERVES, PHOTOGRAPHS
Abstract

Calamagrostis nagarum, previously considered to be a poorly known species, has been reassessed taxonomically. It is a member of C. lahulensis-C. scabrescens complex and may be segregated by morphological characters such as the presence of pilose hairs on adaxial surface of leaf blades, spreading panicle branches, filiform awn and nerve prolongation of lemma. Besides, the micromorphology of adaxial surface of leaf blades, dorsal surface of glume and lemma differentiates Calamagrostis nagarum from its allies, C. lahulensis and C. scabrescens. It is known from Nagaland and Uttarakhand, India, and Bhutan. In this study, we have provided an emended description of the species, a discussion of its habitat and distribution, and taxonomic notes along with field photographs and photo plates for its correct identification. In addition, we also lectotypify the names C. lahulensis and C. scabrescens. [ABSTRACT FROM AUTHOR]

Published
2022
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37. Antiplatelet Efficacy of 75 mg Aspirin Once a Day versus Twice a Day Dosing in Type 2 Diabetes Mellitus Patients-A Longitudinal Open Label Study.

Author

PHULPAGARE, MAYUR B., TIWARI, SMITA A., and HIRAY, RAJESH S.

Subjects
*TYPE 2 diabetes, *ASPIRIN
Abstract

Introduction: Patients of Type 2 Diabetes Mellitus (T2DM) characteristically have platelets hyper-reactivity and accelerated turnover rates leading increased adhesion, aggregation and procoagulant activity. Half-life of aspirin is only 20 minutes and it, therefore, irreversibly inactivates limited number of platelets over this short duration, when given as a once-daily dose. Newly generated-active platelets enter circulation, thereafter, and weaken antiplatelet effect of aspirin. Therefore, single daily dose of 75 mg aspirin may be insufficient to provide 24 hours protection against cardiovascular events, in these patients. Aim: To study and compare antiplatelet efficacy of 75 mg aspirin twice a day (75 mg BD) versus 75 mg aspirin once a day (75 mg OD) in patients of T2DM and to study the effect of variation in glycated haemoglobin (HbA1c) levels on antiplatelet efficacy. Materials and Methods: This was a longitudinal, open label, comparative trial conducted at tertiary care hospital for a period of nine months. A total of 129 subjects, diagnosed with T2DM according to American Diabetes Association (ADA) criteria 2018 (N=129) were enrolled in the study, of which nine were lost to follow-up and antiplatelet efficacy of aspirin dosing was examined at baseline and three-monthly intervals thereafter, till nine months, using colorimetric method. Results: Mean age of enrolled patients was 62 years (Interquartile Range (IQR) 57-66). HbA1c levels of both the groups were comparable (p=0.77) at baseline. At the end of nine months, percentage platelet aggregability of the 75 mg B.D. group (29.30±10.39) was significantly lower (p<0.00001) than that of 75 mg OD (38.20±10.36). There was no correlation observed between HbA1c variation and percentage platelet aggregability for entire study population. Conclusion: Present study concludes that, 75 mg OD aspirin as a strategy for secondary cardiovascular disease prevention is advocated, but not adequate in T2DM patients. Splitting a dose of 150 mg/day aspirin as 75 mg twice is more effective, due to increased platelet turnover in diabetic patients. [ABSTRACT FROM AUTHOR]

Published
2022
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41. Galileo Enhanced Solution for Pest Detection and Control in Greenhouses with Autonomous Service Robots

Author

Pattinson, Michael, primary, Tiwari, Smita, additional, Zheng, Yuheng, additional, Fryganiotis, Dimitrios, additional, Campo-Cossio, Maria, additional, Arnau, Raul, additional, Obregon, David, additional, Martin, Jon, additional, Tubio, Carlos, additional, Lluvia, Iker, additional, Rey, Oscar, additional, Verschoore, Jeroen, additional, Huska, Dalibor, additional, Lenza, Libor, additional, and Gonzalez, Joaquin Reyes, additional

Published
2020
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44. Approach for Autonomous Robot Navigation in Greenhouse Environment for Integrated Pest Management

Author

Tiwari, Smita, primary, Zheng, Yuheng, additional, Pattinson, Michael, additional, Campo-Cossio, Maria, additional, Arnau, Raul, additional, Obregon, David, additional, Ansuategui, Ander, additional, Tubio, Carlos, additional, Lluvia, Iker, additional, Rey, Oscar, additional, Verschoore, Jeroen, additional, Adam, Vojtech, additional, and Reyes, Joaquin, additional

Published
2020
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47. GNSS PRECISE POINT POSITIONING FOR AUTONOMOUS ROBOT NAVIGATION IN GREENHOUSE ENVIRONMENT FOR INTEGRATED PEST MONITORING

Author

Pattinson, Michael, Tiwari, Smita, Zheng, Yuheng, Campo-Cossio, Maria, Arnau, Raul, Obregon, David, Ansuategui, Ander, Tubio, Carlos, Lluvia, Iker, Rey, Oscar, Verschoore, Jeroen, Libor Lenža, and Reyes, Joaquin

Subjects
13. Climate action, GNSS, Precise Point Positioning, Precision Farming, Integrated Pest Monitoring
Abstract

GreenPatrol robot is an autonomous robotic solution for early detection and control of pests in greenhouses. The importance of robot precise positioning inside the greenhouse is a key aspect to endow the robot with the ability to scout the environment, precisely register the detected pest location into accurate maps and to allow the later treatment. Greenhouses are a challenging environment in terms of multipath and signal blockage due to its metal-reinforced complex structures of glass or polycarbonate. GreenPatrolrobot localization takes advantage of the higher accuracy and the multiple signal frequencies provided by the European Global Navigation Satellite System (EGNSS) of the Galileo constellation (E5Alt BOC), by means of precise positioning techniques combined with inertial measurement sensors, odometry and maps to provide an accurate global localization mechanism. This paper shows the results of a comparative analysis carried out in a Greenhouse environment in order to evaluate the performance of different processing techniques such as Precise Point Positioning (PPP) and Post Processed Kinematic (PPK). The purpose of this analysis is to study the advantages of the use of Galileo new signals and to determine the best global localization solution for the GreenPatrol robot. The results experimentally show that the use of PPP Galileo E5 AltBOC signal in a multi-constellation solution offers better signal quality and better positioning performance for the intended environment.

Published
2019
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49. A Hybrid RSS/TOA Method for 3D Positioning in an Indoor Environment

Author

Tiwari, Smita, Wang, Donglin, Fattouche, Michel, and Ghannouchi, Fadhel

Subjects
Article Subject
Abstract

This paper investigates 3D positioning in an indoor line of sight (LOS) and nonline of sight (NLOS) combined environment. It is a known fact that time-of-arrival-(TOA-) based positioning outperforms other techniques in LOS environments; however, multipath in an indoor environment, especially NLOS multipath, significantly decreases the accuracy of TOA positioning. On the other hand, received-signal-strength-(RSS-) based positioning is not affected so much by NLOS multipath as long as the propagation attenuation can be correctly estimated and the multipath effects have been compensated for. Based on this fact, a hybrid weighted least square (HWLS) RSS/TOA method is proposed for target positioning in an indoor LOS/NLOS environment. The identification of LOS/NLOS path is implemented by using Nakagami distribution. An experiment is conducted in the iRadio lab, in the ICT building at the University of Calgary, in order to (i) demonstrate the availability of Nakagami distribution for the identification of LOS and NLOS path, (ii) estimate the pass loss exponent for RSS technique, and (iii) verify our proposed scheme.

Published
2012
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