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Experimental and theoretical study of the Cu65(n,p)Ni65 reaction cross section from reaction threshold up to 25 MeV

Physical Review C 2023年第5期107卷 054607-054607页

作者： R. K. Singh N. L. Singh Mayur Mehta Rakesh Chauhan H. Kumawat Rajnikant Makwana S. V. Suryanarayana B. K. Nayak H. Naik Jan Varmuza K. Katovsky Department of Physics Faculty of Science The M. S. University of Baroda Vadodara 390002 India Department of Physics Netaji Subhas University of Technology Dwarka Delhi 110078 India Institute for Plasma Research Gandhinagar Gujarat 382428 India Nuclear Physics Division Bhabha Atomic Research Centre Mumbai 400085 India Radiochemistry Division Bhabha Atomic Research Centre Mumbai 400085 India Department of Electrical Power Engineering Brno University of Technology Brno 61600 Czech Republic

The cross section of the Cu65(n,p)Ni65 reaction was studied experimentally at three different neutron energies using an activation technique. The quasimonoenergetic neutrons were produced via the Li7(p,n) reaction at the 14UD BARC-TIFR Pelletron facility in Mumbai, India. Al monitor foils along with Cu samples were activated to determine the incident neutron flux. The activities of the reaction products were measured using a high resolution high purity germanium spectrometry system. Statistical model calculations were performed using the reaction codes talys (ver. 1.9) and empire (ver. 3.2.3) from the reaction threshold to the neutron energy of 25 MeV. Additionally, the effects of various combinations of the theoretical nuclear level densities (NLDs), optical model potentials (OMPs), preequilibrium models (PEs), and γ-ray strength functions (γ SFs) were considered for the reproduction of experimental data. The input parameters needed in theoretical calculations to reproduce the present and previous measurements were taken from the RIPL-3 database. The present results are compared with the previous measurements, with the latest evaluations of the ENDF/B-VIII.0, JEFF-3.3, JENDL-4.0/HE, CENDL-3.2, TENDL-2019, and FENDL-3.2 libraries, and with the theoretically calculated values based on talys and empire codes. Furthermore, the cross section of the Cu65(n,p)Ni65 reaction was estimated within the neutron energies of 14–15 MeV using different systematic formulas. These estimated cross sections by various systematic formulas were compared with the available experimental data. The present data will help to understand the nuclear reaction theory (models) in higher energy regions and improve the evaluated nuclear data evaluation that is needed for fundamental nuclear applications.

关键词： Nuclear reactions Nucleon induced nuclear reactions Proton emission

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Contract Theory Based Incentive Mechanism Design Approaches in Cognitive Radio Networks: A Survey 4

Contract Theory Based Incentive Mechanism Design Approaches ...

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4th International Conference on Internet of Things: Smart Innovation and Usages, IoT-SIU 2019

作者： Gupta, Nitin Dhurandher, Sanjay Kumar Kumar, Bhoopendra Division. of Computer Engineering University of Delhi Netaji Subhas Institute of Technology India Division of Information Technology University of Delhi Netaji Subhas Institute of Technology India Department of Information Technology KIET Group of Institutions Ghaziabad India

ISBN: (纸本)9781728112534

Through the previous decade, an ever increasing demand of wireless radio spectrum has been observed due to expeditious use of various wireless applications and devices. However, current fixed radio spectrum policy holds up the efficient use of radio spectrum due to which large part of the spectrum remain under-utilized. This requires a complete transformation of how currently spectrum is managed, from fixed spectrum assignment to dynamically accessing the spectrum. This step will help to considerably minimize the burden on bounded spectrum resources due to the expanded growth of wireless services. Recently, cognitive radio networks technology is gaining much attention due to its ability to use the spectrum more intelligently and flexibly. This technology of cognitive radio allows unlicensed users to exploit the idle spectrum channel dynamically while licensed users are not transmitting. This requires participation and agreement of licensed user to allow the use of their resources by the unlicensed users opportunistically. Thus, new incentive design mechanism in cognitive radio networks is required such that participation of licensed user nodes is ensured. Contract theory is an incentive design mechanism where participants are offered appropriately designed reward to encourage cooperation. To achieve this, the interaction between the licensed users and unlicensed users is modeled as a labor market using contract theory. In this work, first introduction to cognitive radio networks is provided followed by the survey of use of contract theory in the Next Generation Wireless Networks in the literature. The work is concluded with the possible future directions in this area. © 2019 IEEE.

关键词： Surveys

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Correction to: Automatic detection of osteosarcoma based on integrated features and feature selection using binary arithmetic optimization algorithm

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Multimedia Tools and Applications 2023年第26期82卷 41433-41433页

作者： Bansal, Priti Gehlot, Kshitiz Singhal, Abhishek Gupta, Abhishek Department of Information Technology Netaji Subhas University of Technology New Delhi India Department of Information Technology Netaji Subhas Institute of Technology New Delhi India School of Computer Science and Engineering Shri Mata Vaishno Devi University Jammu and Kashmir India

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Quantitative Analysis of Feature Extraction Techniques for Isolated Word Recognition 3rd

Quantitative Analysis of Feature Extraction Techniques for I...

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3rd International Conference on Advances in Computing and Data Sciences, ICACDS 2019

作者： Agarwal, Chesta Chakraborty, Pinaki Barai, Serena Goyal, Vaibhav Division of Computer Engineering Netaji Subhas University of Technology DwarkaNew Delhi India

ISBN: (纸本)9789811399411

Isolated word recognition has been a subject of research since the 1940s when speech recognition technology was in a nascent stage. Recurrent neural networks and deep feed-forward networks are currently being explored by researchers to increase the efficiency of the speech recognition systems. However, probabilistic techniques like Gaussian Mixture Model (GMM) and Hidden Markov Model (HMM) have been the state-of-the-art since long. This paper performs a quantitative analysis of feature extraction techniques for isolated word recognition to provide better insights in improving the efficiency of the system. In this regard, a basic architecture of the word recognizer system has been modelled and it has been observed that Mel Frequency Cepstrum Coefficients (MFCC) in combination with Delta and Delta-Delta parameters have 92.4% accuracy for a sufficiently large dataset. Also MFCC features, appended with Delta parameters have 87.0% accuracy which is 36.4% higher than that of Short Time Fourier Transform (STFT) features. The feature extraction techniques have been classified by a Gaussian Mixture Model- Hidden Markov Model (GMM-HMM) classifier. This paper also studies the effect of varying data size and number of features on the recognition model towards efficient word recognition. These recognizers may then be used as a building block for mispronunciation detection in a computer Aided Pronunciation Training (CAPT) system. © 2019, Springer Nature Singapore Pte Ltd.

关键词： Hidden Markov models

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Fault Detection and Correction in Omni Bundle Robot Using EKF

Fault Detection and Correction in Omni Bundle Robot Using EK...

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International Conference on Manufacturing, Advanced Computing, Renewable Energy and Communication, MARC 2018

作者： Rana, Rohit Agarwal, Vijyant Gaur, Prerna Parthasarathy, Harish Instrumentation and Control Engineering Division Netaji Subhas Institute of Technology Sec-03 Dwarka110078 India Manufacturing Process and Automation Engineering Division Netaji Subhas Institute of Technology Sec-03 Dwarka110078 India Electronics and Communication Engineering Division Netaji Subhas Institute of Technology Sec-03 Dwarka110078 India

ISBN: (纸本)9789811367717

In this paper, the entire focus is on fault detection and correction using extended Kalman filter (EKF) on industrially used omni bundle robot. Here, the authors considered a problem where a robot does monotonous job and repetitively traverse the same trajectory every time. Due to wear and tear or any fluctuation in input signals, the robot may not track the desired trajectory. Faults may arise at various levels in robots, for example, in actuator, encoder, and dynamical parameters. Actuator fault detection using encoder sensor will be the main focus in this research paper. The dynamics of robotic arm link is modeled using a DC motor attached with the link, and the encoder attached with the motor will provide position feedback. The fault is detected using EKF state estimation, and the fault is corrected using a PID controller feedback into the motor input torque. © 2019, Springer Nature Singapore Pte Ltd.

关键词： Extended Kalman filters

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Wideband High Gain Active Feedback Transimpedance Amplifier

Research Square

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Research Square 2021年

作者： Singh, Preeti Gupta, Maneesha Aggrawal, Bhawna Rai, Shireesh Kumar Faculty of Technology University of Delhi New Delhi110078 India Division of Electronics and Communication Engineering Netaji Subhas University of Technology New Delhi110078 India Electronics and Communication Engineering Department Thapar Institute of Engineering and Technology Punjab Patiala147004 India

This paper presents a new wideband high gain CMOS transimpedance amplifier without using any inductor. In the proposed TIA, gain enhancing path is introduced in the active voltage-current feedback TIA topology to increase both the gain and bandwidth. This path increases the transconductance of the proposed TIA which reduces the input resistance and leads to bandwidth extension. Additionally, for utilizing the benefit of this topology, cascading of common source stage is also done to increase the gain further without deteriorating the bandwidth. Mathematical analysis is also performed to evaluate both the gain and bandwidth enhancement. These analyses are supported by simulations that are done using TSMC 180 nm CMOS technology with the input photodiode capacitance of 0.3 pF. The proposed TIA occupies 0.019 mm2 area and consumes 3.2 mW from the power supply of 1.8 V. Simulation results show that the transimpedance gain of the proposed TIA is 57.15 dBΩ over the bandwidth of 6.5 GHz. The input noise is 17.16 pA/√Hz. © 2021, CC BY.

关键词： Operational amplifiers

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Diversity and progress controlled gravitational search algorithm for balancing load in cloud 6th

Diversity and progress controlled gravitational search algor...

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6th International Symposium on Security in Computing and Communications, SSCC 2018

作者： Chaudhary, Divya Kumar, Bijendra Garg, Shaksham Department of Computer Engineering Netaji Subhas Institute of Technology DwarkaNew Delhi110078 India

ISBN: (纸本)9789811358258

Load scheduling is used to distribute load over the cloud. Various load scheduling techniques are used for efficient functioning of cloud. Recently many search based optimization techniques have been successfully used for the process of load scheduling. These optimization techniques considerably reduces the time which is required to solve the problem of load scheduling in cloud computing. This paper discusses about Diversity and Progress Controlled Gravitational Search Algorithm. The results of proposed approach are compared with Gravitational Search Algorithm and Particle Swarm Optimization. Experimental results confirm that the proposed approach is better than PSO and GSA. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Cloud computing

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DiaRet: A browser-based application for the grading of diabetic retinopathy with integrated gradients

arXiv

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arXiv 2021年

作者： Patel, Shaswat Lohakare, Maithili Prajapati, Samyak Singh, Shaanya Patel, Nancy Department of Computer Science & Engineering Netaji Subhas Institute of Technology New Delhi India Department of Computer Science & Engineering Pandit Deendayal Energy University Gandhinagar India Department of Computer Science & Engineering National Institute of Technology New Delhi India Bachelor of Medicine Bachelor of Surgery AMC MET Medical College Ahmedabad India

Patients with long-standing diabetes often fall prey to Diabetic Retinopathy (DR) resulting in changes in the retina of the human eye, which may lead to loss of vision in extreme cases. The aim of this study is two-fold: (a) create deep learning models that were trained to grade degraded retinal fundus images and (b) to create a browser-based application that will aid in diagnostic procedures by highlighting the key features of the fundus image. In this research work, we have emulated the images plagued by distortions by degrading the images based on multiple different combinations of Light Transmission Disturbance, Image Blurring and insertion of Retinal Artifacts. InceptionV3, ResNet-50 and InceptionResNetV2 were trained and used to classify retinal fundus images based on their severity level and then further used in the creation of a browser-based application, which implements the Integration Gradient (IG) Attribution Mask on the input image and demonstrates the predictions made by the model and the probability associated with each class. © 2021, CC BY-NC-ND.

关键词： Eye protection

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A Modified Incremental Conductance Maximum Power Point Technique for Standalone PV System

A Modified Incremental Conductance Maximum Power Point Techn...

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International Conference on Signal Processing and Integrated Networks (SPIN)

作者： Urvashi Chauhan Asha Rani Vijander singh Bhavnesh Kumar Division of Instrumentation and Control Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi India

ISBN: (数字)9781728154756

ISBN: (纸本)9781728154763

The main aim of this work is to design an effective MPPT algorithm so that the power utilization efficiency of PV array is enhanced. Therefore improved incremental conductance MPPT controller i.e. INC-PID MPPT is proposed which utilizes the concept of traditional incremental conductance algorithm and proportion-integral-derivative controller. The conventional MPPT methods i.e. incremental conductance and perturb & observation have simple structure and may be implemented easily. However these algorithms suffer from low tracking efficiency and steady state oscillations. The proposed technique overcomes these drawbacks and also preserves the simple structure. The controller parameters are optimized using grey wolf optimization (GWO). The proposed algorithm is applied to multi crystal solar panel, KC130GT by M/S Kyocera, and power tracking capability of INC-PID MPPT is evaluated for various patterns of irradiance. The suggested technique proves to be superior than existing techniques in terms of settling time, undershoot and rise time.

关键词： Maximum power point trackers Signal processing algorithms Photovoltaic systems Mathematical model Optimization Oscillators Genetic algorithms

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Assessment of Surface Integrity in Diamond Grinding - Based Hybrid Machining of Tungsten Free Carbide based Hard Metal 2

Assessment of Surface Integrity in Diamond Grinding - Based ...

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2nd International Conference on New Frontiers in engineering, Science and technology, NFEST 2019

作者： Jha, Jayant Kumar Jha, S.K. Division of Manufacturing Processes and Automation Engineering Netaji Subhas Institute of Technology Delhi University New Delhi India

Hybrid machining process comprises of applying at least two process components all the while or successively in synergistic way to improve the machining performance. One such machining process is diamond grinding in presence of high frequency electric sparks. This process is all about making trade-off between surface finish and process efficiency. This paper attempts to model the surface roughness using artificial neural network with supervised learning in which back propagation algorithm is used for minimizing error and estimation of adaptive weights. Experimental data for machining of TN20 Russian grade cermet is used for development of neural network. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Surface roughness

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