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Design and Simulation of Intelligent Optical WDM Switching Node Based on Erlang Traffic Model

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International Journal of Communications, Network and System Sciences 2010年第6期3卷 563-568页

作者： manoj kumar Dutta Vinod kumar Chaubey 不详

In this paper we propose a new architectural switching nodes consisting of two processing nodes that follow Erlang B and Erlang C traffic respectively. The developed model is used to best utilize the given number of output channels to achieve the least blocking probability. An appropriate mathematical model has been further devised and its call blocking probability has been enunciated. Performance of the model has been evaluated for different values of blocking probabilities. It has been observed that the performance of the network is well satisfactory for different design parameters.

关键词： WDM Networks Erlang Traffic Optical Node Blocking Probability Traffic Fraction

Exact Solution of Second Grade Fluid in a Rotating Frame through Porous Media Using Hodograph Transformation Method

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Journal of Applied Mathematics and Physics 2015年第11期3卷 1443-1453页

作者： Sayantan Sil manoj kumar Department of Physics S.S.L.N.T. Mahila College Dhanbad India Post Graduate Department of Physics Ranchi College Ranchi India

In this paper exact solution for a homogenous incompressible, second grade fluid in a rotating frame through porous media has been provided using hodograph-Legendre transformation method. Results are summarised in the... 详细信息

关键词： Non-Newtonian Fluid Rotating Frame Hodograph Transformation Porous Media Exact Solution

Does endoscopic sclerotherapy in filarial chyluria affect renal function and morphology? A prospective study using dimercaptosuccinic acid renal scan

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Asian Journal of Urology 2019年第4期6卷 359-363页

作者： Bimalesh Purkait Apul Goel Satyawati Deswal Monica Agrawal BhupendraPal Singh manoj kumar Department of Urology King George’s Medical UniversityLucknowUttar PradeshIndia Department of Nuclear Medicine Dr.Ram Manohar Lohia Institute of Medical SciencesLucknowIndia Department of Obstetrics and Gynaecology King George’s Medical UniversityLucknowUttar PradeshIndia

Objective:To look for change in relative renal function and document renal scarring following endoscopic renal pelvic instillation sclerotherapy(RPIS)in patients with chyluria by dimercaptosuccinic acid(DMSA)renal ***:A prospective study was performed between November 2015 and September *** patients with biochemically documented chyluria who underwent RPIS using either 1%-silver nitrate or 0.1%-povidine iodine were *** received either 3-,6-or *** renal scan was performed before and 2e3 months after ***:Of the 34 patients,22 were *** age was 41.08±16.64 years(range,15-70 years).Thirty-two patients(94.1%)responded to therapy while two did not respond even after *** follow-up was 8.94±3.70 *** mean relative renal function(preinstillation)of normal kidney was 50.76%±3.55%while that of affected renal unit(side of instillation)was 49.20%±3.44%(range,43.0%-61.0%).After instillation therapy,the mean relative renal function of normal side was 52.26%±3.57%while that of affected renal unit was 47.50%±3.56%(range,41.0%-54.0%).The relative renal function did not change>5%from the baseline value in any patient except one(in which the differential function increased paradoxically by 12%).Two patients developed renal scar in post-instillation renal ***:Endoscopic sclerotherapy in chyluria is safe and *** relative renal function does not deteriorate by more than 5%.There is a small risk of development of renal *** studies involving larger number of patients are needed to answer this dilemma.

关键词： Chyluria Endoscopic sclerotherapy Dimercaptosuccinic acid renal scan Relative renal function Renal scarring

Voltage Controlled Ring Oscillator Design with Novel 3 Transistors XNOR/XOR Gates

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Circuits and Systems 2011年第3期2卷 190-195页

作者： manoj kumar Sandeep kumar Arya Sujata Pandey 不详

In present work, improved designs for voltage controlled ring oscillators (VCO) using three transistors XNOR/XOR gates have been presented. Supply voltage has been varied from [1.8 - 1.2] V in proposed designs. In first method, the VCO design using three XNOR delay cells shows frequency variation of [1.900 - 0.964] GHz with [279.429 - 16.515] μW power consumption variation. VCO designed with five XNOR delay cells shows frequency variation of [1.152 - 0.575] GHz with varying power consumption of [465.715 - 27.526] μW. In the second method VCO having three XOR stages shows frequency variation [1.9176 - 1.029] GHz with power consumption variation from [296.393 - 19.051] μW. A five stage XOR based VCO design shows frequency variation [1.049 - 0.565] GHz with power consumption variation from [493.989 - 31.753] μW. Simulations have been performed by using SPICE based on TSMC 0.18μm CMOS technology. Power consumption and output frequency range of proposed VCOs have been compared with earlier reported circuits and proposed circuit’s shows improved performance.

关键词： CMOS Delay Cell Low Power VCO XOR and XNOR Gates

Electric and Magnetic Fields from Return Stroke-Lateral Corona System and Red Sprites

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Journal of Electromagnetic Analysis and Applications 2011年第12期3卷 479-489页

作者： manoj kumar Paras Jagdish Rai 不详

Electric and magnetic fields in time and frequency domain due to return stroke-lateral corona (RS-LC) system and re- cently discovered red sprites have been calculated. It has been found that the electric and magnetic fields due to return stroke and lateral corona system radiate in the very low frequency (VLF) region while due to sprites radiate in the ex- tremely low frequency (ELF) range. A comparison has been made between the radiations emitted due to RS-LC system and sprites in ELF (0 - 200 Hz) region. It has been found that the electric field i.e. radiation power generated due to sprites dominates in the ELF range and thus it is concluded that the red sprites as compared to the RS-LC system are the prominent source for the excitation of Schumann resonances in the earth-ionosphere waveguide.

关键词： Return Stroke Lateral Corona Lightning Sprites ELF Ionosphere

Design of a Li-Fi Transceiver

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Wireless Engineering and Technology 2017年第4期8卷 71-86页

作者： Pavas Goswami manoj kumar Shukla Department of Electronics School of Engineering HBTU Kanpur India

The latest uproar in this era is about a technology termed as Light Fidelity or more commonly known as Li-Fi. There are currently two trends being seen: First, the extension or enrichment of wireless services and other being increased in user demand for these services, but the available RF spectrum for usage is very limited. So the new technology of Li-Fi came into picture, which uses visible light as a source of communication. Li-Fi is the most recent development which is resourceful. In this technology, LEDs are used to transmit data in the visible light spectrum. This technology can be compared with that of Wi-Fi and offers advantages like increased accessible spectrum, efficiency, security, low latency and much higher speed. This research paper aims at designing a Li-Fi transceiver using Arduino that is able to transmit digital data. The hardware has been designed using Eagle CAD (version 7.1.0) tool and Proteus design tool (version 8). The software coding is done by using Java (version 8). Successful transmission and reception of text, image and video signals is carried out on the transceiver. Hence this research work gives an innovative way of designing a transceiver which works by using off the shelf low cost components and using visible light spectrum.

关键词： Light Fidelity (Li-Fi) Visible Light Communication (VLC) Arduino Light Emitting Diode (LED) Optical Wireless Communication (OWC)

An analytical solution with existence and uniqueness conditions for fractional integro-differential equations

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International Journal of Modeling, Simulation, and Scientific Computing 2020年第5期11卷 147-169页

作者： Pratibha Verma manoj kumar Department of Mathematics Motilal Nehru National Institute of Technology AllahabadPrayagraj-211004Uttar PradeshIndia

This study aims to apply the two-step Adomian decomposition method(TSADM)to find an analytical solution of integro-differential equations for fractional order without discretization/approximation with less number of iterations and reduce the computational ***,we have established the results for the existence and uniqueness of a solution with the help of some fixed point theorems and the Banach contraction ***,the method is demonstrated on different test examples arising in real life *** is concluded that the TSADM provides exact solution of the fractional integro-differential equations in one *** the same time,the other existing methods furnish an approximate solution and require lots of computation to solve the problem applying discretization/approximation on fractional operators.

关键词： Caputo fractional derivative two-step Adomian decomposition method integro-differential equation fixed point theorem

Rating Curve Estimation of Surface Water Quality Data Using LOADEST

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Journal of Environmental Protection 2013年第8期4卷 849-856页

作者： Bhasker Jha manoj kumar Jha Department of Civil Architectural and Environmental Engineering North Carolina A&T State University Greensboro USA

Measurement of the nutrient concentrations in the stream is usually done on weekly, biweekly or monthly basis due to limited resources. There is need to estimate concentration and loads during the period when no data is available. The objectives of this study were to test the performance of a suite of regression models in predicting continuous water quality loading data and to determine systematic biases in the prediction. This study used the LOADEST model which includes several predefined regression models that specify the model form and complexity. Water quality data primarily nitrogen and phosphorus from five monitoring stations in the Neuse River Basin in North Carolina, USA were used in the development and analyses of rating curves. We found that LOADEST performed generally well in predicting loads and observation trends with general tendency/bias towards overestimation. Estimated Total Nitrogen (TN) varied from observation (“true” load) by -1% to 9%, but for the Total Phosphorus (TP) it ranged from -2% to 27%. Statistical evaluation using R2, Nash-Sutcliff Efficiency (NSE) and Partial Load Factor (PLF) showed a strong correlation in prediction.

关键词： LOADEST Rating Curve Nutrient Load Water Quality

Performance Evaluation of Diversity Techniques in IDMA Scheme for Next Generation (4G) in Underwater Wireless Communication

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Wireless Engineering and Technology 2014年第3期5卷 88-98页

作者： Prachi Tripathi manoj kumar Shukla Electronics and Communication Engineering Division Harcourt Butler Technology Institute Kanpur India Gautam Budha Technical University Lucknow India

This paper provides a review on the diversity techniques of IDMA (Interleave Division Multiple Access) technology in underwater wireless IDMA employs interleavers as the only means in order to distinguish the users. This paper provides a comprehensive study of diversity techniques in IDMA scheme to mitigate the fading issue. In this paper, we compare the different generation diversity techniques in IDMA scheme on computational complexity, bit error rate and memory requirement. Recent advancement in underwater communication is modulation techniques, multiplexing techniques and multiple access techniques. Underwater communication channel is characterized.

关键词： Wireless Communication Acoustic Communication Underwater Communication Modulation Technique Multiple Access Scheme IDMA CDMA Interleavers Underwater Communication Channel