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A Practical Solution for Location Estimation in Manually Deployed Wireless Sensor Networks

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Wireless Sensor Network 2011年第4期3卷 117-120页

作者： om prakash sahu Tarun Dubey 不详

This paper addresses the existing research and adds another aspect of functionality by incorporating pertinent sensor nodes to provide a dynamic location discovery and estimation. The software used provides an easy graphical user interface to visualize a particular location in accordance with geographical latitude and longitude. A simple real time location estimation technique is worked out for wireless sensor networks based on manual deployment of sensors. The proposed scheme finds more efficient solutions with less quantity of sensors as compared to existing deployment schemes. The set up is evaluated exclusively in real environments using IRIS sensor nodes supported by a global positioning system module to provide visualization of an outdoor location. The results are offered by Google Earth application.

关键词： Wireless Sensor Network (WSN) Global Positioning System (GPS) Localization Sensor Node IRIS Sensor

On Almost Armendariz Ring

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Algebra Colloquium 2020年第2期27卷 199-212页

作者： om prakash Sushma Singh K.P.Shum Department of Mathematics Indian Institute of Technology Patna PatnaBihar 801106India Department of Mathematics John Fulton Center The Chinese University of Hong KongShatinN.T.Hong KongChina

In this paper,we introduce the notion of an almost Armendariz ring,which is a generalization of an Armendariz ring,and discuss some of its *** has been found that every almost Armendariz ring is weak Armendariz but the converse is not *** prove that a ring R is almost Armendariz if and only if R[x]is almost *** is also shown th at if R/I is an almost Armendariz ring and I is a semicommutative ideal,then H is an almost Armendariz ***,the class of minimal non-commutative almost Armendariz rings is completely determined,up to isomorphism(minimal means having smallest cardinality).

关键词： Armendariz ring almost Armendariz ring weak Armendariz ring lower nil radical reduced ring semicommutative ring

Antidiabetic,hypolipidemic and histopathological analysis of Dillenia indica (L.) leaves extract on alloxan induced diabetic rats

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Asian Pacific Journal of Tropical Medicine 2011年第5期4卷 347-352页

作者： Sunil Kumar Vipin Kumar om prakash Institute of Pharmaceutical Sciences Kurukshetra UniversityHaryanaIndia

Objective:To investigate antidiabetic,hypolipidemic histopathological analysis of Dillenia indica(***) methanolic leaves(DIME) extract in alloxan induced diabetic rat by administering oral doses(250 and 500 mg/kg body weight).Methods:Blood glucose levels were measured using blood glucose test strips with elegance glucometer on weekly intervals till the end of study(i.e.3 weeks).Other parameters *** profile,renal profile and total lipid levels were determined in normal and alloxan induced diabetic rats after oral administration of the extract for 21 *** changes in diabetic rat organs(pancreas,liver and kidney) were also observed after extract treatment Results:Daily oral administration DIME(250 and 500 mg/kg body weight) and glibenclamide(10 mg/kg) showed beneficial effects on blood glucose level (Pompared to diabetic control ***,the extract has a favorable effect on the histopathological changes of the pancreas,liver and kidney in alloxan induced diabetes. Conclusions:*** possess antidiabetic property as well improve body weight,liver profile, renal profile and total lipid *** has also favorable effect to inhibit the histopathological changes of the pancreas and kidney in alloxan induced diabetes.

关键词： Antidiabetic Dillenia indica Hypolipidemic Rat Serum cholesterol

The influence of AAR coupler features on estimation of in-train forces

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Railway Engineering Science 2023年第3期31卷 233-251页

作者： om prakash Yadav Nalinaksh S.Vyas Department of Mechanical Engineering Indian Institute of Technology KanpurKanpurUttar Pradesh 208016India

Inadequate management of large in-train forces transferred through coupler systems of a railway train leads to running and structural failures of *** these phenomena and their mitigation requires accurate estimation of relative motions and in-train forces between vehicle *** numerical studies have ignored inertia of coupling elements and the impacts between ***,existing models underestimate the additional dynamic variations in in-train *** multi-body dynamic models of two AAR(Association of American Railroads)coupler systems used in passenger and freight trains are developed,incorporating coupler inertia and various *** to the modeling and simulation com-plexities involved in a full train model,with such details of coupler system,actual longitudinal train dynamics is not studied.A system comprising only two coupling units,inter-connecting two consecutive vehicles,is *** system has been fixed at one end and an excitation force is applied at the other end,to mimic a relative force transmission through combined coupler *** results obtained from this representative system show that,noticeable influence in in-train forces are expected due to the combined effect of inertia of couplers and intermittent impacts between couplers in the slack *** amplitude of longitudinal reaction force,transferred from draft gear housing to vehicle body,is expected to be significantly higher than that predicted using existing models of coupler *** is also observed that the couplers and knuckles are subjected to significant longitudinal and lateral contact forces,due to the intermittent impacts between ***,accurate estimation of draft gear reaction force and impact forces between couplers are essential to design vehicle and coupler components,respectively.

关键词： Automatic railway coupler Draft gear Longitudinal train dynamics In-train forces Coupler slack Intermittent impacts

Antidiabetic and anti-lipemic effects of Cassia siamea leaves extract in streptozotocin induced diabetic rats

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Asian Pacific Journal of Tropical Medicine 2010年第11期3卷 871-873页

作者： S Kumar V Kumar om prakash Institute of Pharmaceutical Sciences Kurukshetra UniversityKurukshetra -136119HaryanaIndia

Objective:To investigate the antidiabetic and anti-lipemic effects of Cassia siamea methanolic leaves ***:The antidiabetic study was performed by measuring blood glucose level with elegance glucometer at weekly intervals i.e.0,7,14 and 21 in normal and streptozotocin induced diabetic *** cholesterol,triglyceride and HDL-cholesterol were determined in normal and streptozotocin induces diabetic rats by *** was used as a reference drug at a dose of 10 mg/***:After the oral administration of extracts at doses of 250 mg/kg and 500 mg/kg for three weeks,blood glucose levels and body weights were significantly improved(P<0.01).Daily oral treatment with the extract also resulted in significantly reduction of serum cholesterol and ***-cholesterol level was found to be improved to(P<0.01).Conclusions:The Cassia siamea leaf extract is useful in controlling blood glucose level as well as improving lipid metabolism and body weight in rats with induced diabetes.

关键词： Cassia siamea Antidiabetic Anti-lipemic Rat Streptozotocin

Camelina sativa,a short gestation oilseed crop with biofuel potential:Opportunities for Indian scenario

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Oil Crop Science 2021年第3期6卷 114-121页

作者： Ankur Agarwal om prakash Madhu Bala Defence Institute of Bio-Energy Research Defence R&D OrganizationGoraparaoP.O.ArjunpurHaldwaniUttarakhand263139India

Camelina is an oilseed crop which is being commercially produced globally as feedstock for *** a non-edible oil bearing low input crop owing to its low fertilizer and water requirement,fits well for biofuel *** India,targets for biofuel blending has been set by New Biofuel Policy-2018 and to meet these targets efforts are being made to harness the potential of available feedstock in the *** these feedstock,contribution of short gestation oilseed bearing crop has been very *** has been introduced in India during 2009–10 as experimental crop by DIBER,*** then various efforts have made to standardize the production technology of this crop under various agro-climatic regions of the country,crop improvement,oil quality analysis and development of high energy *** has various advantages to offer for Indian biofuel *** paper reviews the potential of this crop for Indian Biofuel scenario.

关键词： Camelina False flax Production Agro-technology Crop improvement Economics

Assessment of self-reacting bobbin tool friction stir welding for joining AZ31 magnesium alloy at inert gas environment

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Journal of Magnesium and Alloys 2019年第4期7卷 661-671页

作者： prakash Kumar sahu Nikhil P Vasudevan Bipul Das Sukhomay Pal Department of Mechanical Engineering and IDM Joint Lab Tsinghua UniversityBeijing 100084China Larsen and Toubro Limited HaziraSuratGujarat 394510India Department of Mechanical Engineering National Institute of Technology Silchar788010 AssamIndia Department of Mechanical Engineering Indian Institute of Technology Guwahati781039 AssamIndia

Research work presented in this study has the primary target of exploring joint attributes of AZ31 magnesium alloys using friction stir welding process with a modified tool referred as bobbin *** of inert and open atmosphere on mechanical properties are evaluated over a wide range of welding speed and tool rotation *** of the research findings from the inert atmosphere bobbin tool were made with the traditional process of friction stir *** results depicted improved joint properties for inert atmosphere *** and intermediate range of tool rotational speed is found to be favorable for bobbin tool friction stir welding without and with an inert medium,*** atmosphere due to inert medium leads to less oxidation of the AZ31 Mg alloy leading to superior joint *** investigations are also made with the aim of evaluating the impact of bobbin tool and inert medium on joint *** each aspect for joining of AZ31 Mg alloy,bobbin tool with inert medium is found to be an effective solution for joining with improved mechanical properties compared to without inert bobbin tool as well as conventional tool friction stir welding.

关键词： Mg FSW Bobbin tool Process parameters Mechanical properties Fractography Microstructural characterization

Assessment of long-term climate variability and its impact on the decadal growth of horticultural crops in central India

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Ecological Processes 2022年第1期11卷 862-889页

作者： Gaurav Sharma Amita Sharma Nishant Kumar Sinha om prakash Sharma Ashutosh Singh Ajai Kumar Pandey Abhishek Kumar Sudhir Kumar Trivedi Bharti Sao Mukesh Kumar sahu College of Horticulture and Forestry Rani Lakshmi Bai Central Agricultural UniversityJhansiUttar Pradesh 284003India Department of Environmental Science Rajmata Vijayaraje Scindia Krishi VishwavidyalayaGwaliorMadhya Pradesh 474002India Division of Soil Physics Indian Institute of Soil ScienceBhopalMadhya Pradesh 462038India Department of Floriculture and Landscape Architecture Indira Gandhi Krishi VishwavidyalayaRaipurChhattisgarh 492012India

Background:The impact of climate change on horticultural production is of utmost concern *** such vulnerable region of horticultural importance is the Madhya Pradesh state in the central part of *** is crucial to analyse the long-term trend in climatic variations and its effect on horticultural crop ***,this study focuses on detecting trends in mean annual precipitation and temperature of 115 years for the 15 districts covering all the regions of the state as well as projections of all the Representative Concentration Pathway(RCP)climatic scenarios for 2050 and 2080 of Madhya Pradesh *** decadal(2010–2020)insight into the area and production of horticultural crops is undertaken which will help forecasting the future growth *** a better insight,case study on four horticultural crops is undertaken to assess their decadal growth trend vis-à-vis climate parameters in these 15 ***:The Mann–Kendall test for 1901–2016 and Sen’s slope indicated a non-significant change in long-term trend for precipitation except for increasing change in Khargone and decreasing change in Rewa ***-cant increasing trend of average temperature is obtained for Hoshangabad,Jabalpur,Sagar and Rewa *** Sen’s slope indicated an increase of 0.005 to 0.009℃for maximum temperature and 0.005 to 0.012℃for minimum temperature *** projections of all the RCP climate scenarios for the years 2050 and 2080 indicated non-significant variation in precipitation but an increase in maximum(1.4 to 4.1℃)and minimum(1.45 to 4.65℃)annual *** increasing trend in area and production for horticultural crops is also observed in central India for the study *** is yield increase in all the crops selected in case study except for potato,which recorded a decreased yield between the years 2010–***:The Mann–Kendall test and projections indicate towards climate change with a temperature *** the decad

关键词： Climate change Horticulture Madhya Pradesh Precipitation Temperature Trend analysis

An Algorithm for the Protection of Distribution Feeders Using the Stockwell and Hilbert Transforms Supported Features

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CSEE Journal of Power and Energy Systems 2021年第6期7卷 1278-1288页

作者： om prakash Mahela Jaya Sharma Bipul Kumar Baseem Khan Hassan Haes Alhelou the Power System Planning Division Rajasthan Rajya Vidyut Prasaran Nigam Ltd.Jaipur-302005India Department of Electrical Engineering Rajasthan College of Engineering for WomenJaipurIndia the Department of Electrical and Computer Engineering Hawassa UniversityHawassa 1530Ethiopia the Department of Electrical Power Engineering Faculty of Mechanical and Electrical EngineeringTishreen UniversityLattakia 2230Syria

Faults’recognition in the distribution feeders(DFs)is extremely important for improving the reliability of the distribution ***,this paper proposes a technique to identify the faults on the DF using the Stockwell Transform(ST)dependent variance feature and Hilbert transform(HT)by utilizing current *** element to element multiplication of the H-index,we compute using HT aided decompositions of current waveforms and VS-index,and calculate through ST aided decomposition of current *** utilizing the decision rules,various faults are *** faults studied in this work are line to ground,double line,double line to ground and 3-Φto *** high fault impedance,this technique is effectively ***,variations in the fault incidence angles are also utilized to test the performance of the proposed *** perform the proposed algorithm,a IEEE-13 bus system is developed in MATLAB/Simulink *** algorithm effectively classified the faults with accuracy greater than 98%.The algorithm is also successfully validated on the IEEE-34 bus test ***,the algorithm was successfully validated on the practical power system *** is recognized that the developed method performed better than the discrete Wavelet transform(DWT)and ruled decision tree based protection scheme reported in various literature.

关键词： Fault classification fault recognition H-index VS-index