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Publish/subscribe based information dissemination over VANET utilizing DHT

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Frontiers of Computer Science 2012年第6期6卷 713-724页

作者： Tulika PANDEY deepak GARG Manoj Madhav GORE Department of Computer Science and IT Sam Higginbotom Institute of AgricultureTechnology and SciencesAllahabad 211007India Department of Computer Science and Engineering Thapar UniversityPatiala 147004India Department of Computer Science and Engineering Motilal Nehru National Institute of TechnologyAllahabad 211004India

A vehicular ad-hoc network （VANET） can be visualized as a network of moving vehicles communicating in an asynchronous and autonomous fashion. Efficient and scalable information dissemination in VANET applications is a major challenge due to the movement of vehicles which causes unpredictable changes in network topology. The publish/subscribe communication paradigm provides decoupling in time, space, and synchronization between communicating entities, and presents itself as an elegant solution for information dissemination for VANET like environments. In this paper, we propose our approach for information dissemination which utilizes publish/subscribe and distributed hash table （DHT） based overlay networks. In our approach, we assume a hybrid VANET consisting of stationary info-stations and moving vehicles. These info-stations are installed at every major intersection of the city and vehicles can take the role of publisher, subscriber, or broker depending upon the context. The info-stations form a DHT based broker overlay among themselves and act as rendezvous points for related publications and subscriptions. Further, info-stations also assist in locating vehicles that have subscribed to information items. We consider different possible deployments of this hybrid VANET with respect to the number of info-stations and their physical connectivity with each other. We perform simulations to assess the performance of our approach in these different deployment scenarios and discuss their applicability in urban and semi-urban areas.

关键词： vehicular ad-hoc network (VANET) peer-to- peer overlay network publish/subscribe communication paradigm distributed hash table (DHT)

Exploration and insights into the cellular internalization and intracellular fate of amphiphilic polymeric nanocarriers

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Acta Pharmaceutica Sinica B 2021年第4期11卷 903-924页

作者： Samrat Mazumdar deepak Chitkara Anupama Mittal Department of Pharmacy Birla Institute of Technology and Science(BITS-PILANI)Rajasthan 333031India

The benefcial or deleterious effects of nanomedicines emerge from their complex interactions with intracellular pathways and their subcellular ***,the dynamic nature of plasma membrane accounts for the movement of these nanocarriers within the cell towards different organelles thereby not only infuencing their pharmacokinetic and pharmacodynamic properties but also bioavailability,therapeutic effcacy and ***,an in-depth understanding of underlying parameters controlling nanocarrier endocytosis and intracellular fate is *** order to direct nanoparticles towards specifc sub-cellular organelles the physicochemical attributes of nanocarriers can be *** include particle size,shape and surface charge/*** the particle size of nanocarriers below 200 nm contributes to internalization via clathrin and caveolae mediated ***,a moderate negative surface potential confers endolysosomal escape and targeting towards mitochondria,endoplasmic reticulum(ER)and *** review aims to provide an insight into these physicochemical attributes of nanocarriers fabricated using amphiphilic graft copolymers affecting cellular *** principles understood from experimental studies have been extrapolated to draw a general conclusion for the designing of optimized nanoparticulate drug delivery systems and enhanced intracellular uptake via specifc endocytic pathway.

关键词： Amphiphilic Copolymer Nanoparticles Internalization Intracellular fate

Experimental investigation and optimization of weld bead characteristics during submerged arc welding of AISI 1023 steel

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Defence Technology（防务技术） 2019年第1期15卷 72-82页

作者： Ankush Choudhary Manoj Kumar deepak Rajendra Unune Department of Mechanical-Mechatronics Engineering The LNM Institute of Information Technology

Submerged arc welding(SAW), owing to its high deposition rate and high welding quality, is widely used in the fabrication of pressure vessel, marine vessel, pipelines and offshore structures. However, selection of an optimum combination of welding parameters is critical in achieving high weld quality and productivity. In this work, initially, the SAW experiments were performed using fractional factorial design to analyze the effect of direct and indirect input parameters, namely, welding voltage, wire feed rate,welding speed, nozzle to plate distance, flux condition, and plate thickness on weld bead geometrical responses viz. bead width, reinforcement, and penetration. The bead on plate technique was used to deposit weld metal on AISI 1023 steel plates. The effect of SAW input parameters on response variables were analyzed using main and interaction effects. The linear regression was used to develop the mathematical models for the response variable. Then, the multi-objective optimization of input parameters was carried out using desirability approach, genetic algorithm and Jaya algorithm. The Jaya algorithm offered better optimization results as compared to desirability approach, genetic algorithm.

关键词： Submerged arc welding Optimization Regression Genetic algorithm Jaya algorithm

Current efficiency in electro-winning of lanthanum and cerium metals from molten chloride electrolytes

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Rare Metals 2013年第3期32卷 305-311页

作者： deepak Kumar Sahoo Harvinderpal Singh Nagaiyar Krishnamurthy Rare Earths Development Section Bhabha Atomic Research Centre Fusion Reactor Materials Section Bhabha Atomic Research Centre

The objective of this study is to prepare lan- thanum and cerium metals by fused salt electrolysis of their anhydrous chloride in molten media such as LiCl-KCl, NaCl-KCl, KCl, NaCl, and LiCl and to characterize the metal deposit by X-ray diffraction, energy dispersive X-ray fluorescence, and inductive coupled plasma-atomic emis- sion spectroscopy. Deposit metal of purity more than 99 % was obtained in each of the experiments. The entire process starting from preparation of anhydrous lanthanum/cerium chloride to electrolysis yielding of metal deposits has been described. The effect of process parameters such as tem- perature, electrolyte composition, and current density on the current efficiency was studied. All these parameters were varied to get the highest current efficiency and metal yield. The major non-rare earth impurities with the deposit are found to be Fe, Cr, and Ni along with - 1× 10^-3 of total gaseous impurities.

关键词： Fused salt electrolysis Current density Current efficiency Rare earths

Effects of Large-Scale Climatic Oscillations on the Variability of the Indian Summer Monsoon Rainfall

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Journal of Meteorological Research 2023年第3期37卷 341-352页

作者： deepak MEENA Athira K Sarmistha SINGH Department of Civil Engineering Indian Institute of TechnologyPalakkadKerala 678557India

In India,large-scale climatic oscillations have strong influences on the Indian summer monsoon rainfall(ISMR),which plays a crucial role in India’s agricultural production and economic ***,there are limited studies in India that explore the influences of decadal and multidecadal oscillations on the ISMR and associated El Niño–Southern Oscillation(ENSO).Therefore,in this study we carried out a comprehensive and detailed investigation to understand the influences of ENSO,Pacific decadal oscillation(PDO),and Atlantic multidecadal oscillation(AMO)on ISMR across different regions in *** statistical significance of ISMR associated with different phases(positive/warm and negative/cold)of ENSO,PDO,and AMO(individual analysis),and combined ENSO–AMO,and ENSO–PDO(coupled analysis)were analysed by using the nonparametric Wilcoxon Rank Sum(WRS)*** individual analysis results indicate that in addition to the ENSO teleconnection,AMO and PDO significantly affect the spatial patterns of *** analysis was performed to understand how the phase shift of PDO and AMO has modulated the rainfall during El Niño and La Niña *** results indicate that the La Niña associated with a positive PDO phase caused excessive precipitation of about 21%–150%in the peninsular,west–central,and hilly regions compared to the individual effect of ENSO/PDO/AMO on ISMR;similarly,the west–central,coastal,and northwest regions received 15%–56%of excessive ***,during the El Niño combined with PDO positive(AMO positive),above-normal precipitation was observed in hilly,northeast,and coastal(hilly,northeast,west–central,and coastal)regions,opposite to the results obtained from the individual ENSO *** study emphasizes the importance of accounting the decadal and multidecadal forcing when examining variations in the ISMR during different phases of ENSO events.

关键词： climatic oscillation Indian summer monsoon rainfall(ISMR) El Niño-Southern Oscillation(ENSO) Atlantic multidecadal oscillation(AMO) Pacific decadal oscillation(PDO) Wilcoxon Rank Sum(WRS)test

Role of liver transplantation in human immunodeficiency virus positive patients

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World Journal of Gastroenterology 2015年第43期21卷 12311-12321页

作者： deepak Joshi Kosh Agarwal Institute of Liver Studies King’s College Hospital NHS Foundation Trust

End-stage liver disease(ESLD) is a leading cause of morbidity and mortality amongst human immunodeficiency virus(HIV)-positive individuals. Chronic hepatitis B and hepatitis C virus(HCV) infection,drug-induced hepatotoxicity related to combined antiretro-viral therapy,alcohol related liver disease and non-alcohol related fatty liver disease appear to be the leading causes. It is therefore,anticipated that more HIV-positive patients with ESLD will present as potential transplant candidates. HIV infection is no longer a contraindication to liver transplantation. Key transplantation outcomes such as rejection and infection rates as well as medium term graft and patient survival match those seen in the non-HIV infected patients in the absence of co-existing HCV infection. HIV disease does not seem to be negatively impacted by transplantation. However,HIV-HCV coinfection transplant outcomes remain suboptimal due to recurrence. In this article,we review the key challenges faced by this patient cohort in the pre- and posttransplant period.

关键词： Hepatitis B virus Hepatitis C virus Human immunode

Assessing Anthropogenic Pressure and Its Impact on Hippophae salicifolia Pockets in Central Himalaya,Uttarakhand

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Journal of Mountain Science 2013年第3期10卷 464-471页

作者： deepak DHYANI Shalini DHYANI RK MAIKHURI G.B.Pant Institute of Himalayan Environment and Development Garhwal UnitSrinagar GarhwalUttarakhandIndia

Natural habitat ofHippophae salicifolia in Central Himalaya is continuously being degraded due to habitat destruction and harvesting. Although logging is prohibited, habitat destruction has increased because of regular road construction, repairing and broadening activities. In addition, Hippophae resources are continuously being harvested by lopping （both partial and complete） for fuelwood, fodder and fruits in higher Himalayan region. This paper presents a detailed analysis of relationship between density, demographic structure, and harvesting of H. salicifolia growing pockets in the five major valleys （Gangotri, Yamunotri, Niti, Mana and Bhyundhar） of Uttarakhand in Central Himalaya, India. A total of 12o quadrats were laid randomly to study population structure, regeneration, sex ratio and lopping using quadrats of lOO m2 （a4 in each valley） in Hippophae growing patches. Our study shows that the density, size distribution, and regeneration of Hippophae vary considerably among the major valleys. Trees in the Yamunotri valley have the highest density of large trees but the lowest density of seedlings. In contrast, there are few large trees but many seedlings in the Mana valley. The number and size of lopped trees also varied among the valleys. Lopping was greatest in Bhyundhar （11.4%） and Yamunotri （19.7%） and least in Niti （3.9%）. The size of lopped trees differed substantially as well. In Bhyundhar, the largest trees were taken while saplings were taken in Yamunotri. Our study revealed that unsustainable harvesting from plants for fuel, fencing and fruits along with road broadening activities in Central Himalaya are the main cause ofhabitat destruction. Our research highlights the urgent need for in-situ and ex-situ conservation of Hippophae salicifolia so that it＇s potential can be harnessed sustainably by rural hill societies for their socio-economic development.

关键词： Central Himalaya Seabuckthorn Dioecious Disturbance Habitat Conservation

Gindarudine,a novel morphine alkaloid from Stephania glabra

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Chinese Chemical Letters 2009年第7期20卷 823-826页

作者： deepak Kumar Semwal Usha Rawat Department ofChemistry H.N.B.Garhwal University SrinagarUttarakhand 246174 India

A novel morphine alkaloid, named gindarudine 1 has been isolated from ethanol extract of Stephania glabra tubers, together with four known alkaloids, palmatine, dehydrocorydalmine, stepharanine, and 8-（4＇-methoxybenzyl）-xylopinine. Compound 1 was elucidated as 3,6-O,N-detrimethyl-10-hydroxy-l-methoxy-thebaine by means of spectroscopic data including 2D NMR studies. C 2009 deepak Kumar Semwal. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Stephania glabra Menispermaceae Gindaru Gindarudine

Fault Tolerance in the Joint EDF-RMS Algorithm: A Comparative Simulation Study

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Computers, Materials & Continua 2022年第9期72卷 5197-5213页

作者： Rashmi Sharma Nitin Nitin deepak Dahiya University of Petroleum&Energy Studies(UPES) School of Computer ScienceEnergy Acres BuildingBidholiDehradun248007UttarakhandIndia Department of Electrical Engineering and Computer Science College of Engineering and Applied ScienceUniversity of Cincinnati2600 Clifton AveCincinnatiOH 45221United States College of Computer and Information Sciences(CCIS) Majmaah UniversityMajmaah11952Kingdom of Saudi Arabia

Failure is a systemic error that affects overall system performance and may eventually crash across the entire *** Real-Time Systems(RTS),deadline is the key to successful completion of the *** tasks effectively meet the deadline,it means the system is working in pristine ***,missing the deadline means a systemic fault due to which the system can crash(hard RTS)or degrade inclusive performance(soft RTS).To fine-tune the RTS,tolerance is the critical issue and must be handled with extreme *** article explains the context of fault tolerance with improvised Joint EDF-RMS algorithm in *** backup method has been derived to prevent the system from being recursively migrating the same *** any task migrates three times,this migrated task will get shifted to the backup *** backup queue assigns the task to a backup processor and is destined for final *** performance evaluation purposes,a relative graph between fault and failure rates,failure and total processor utilization along with other averages have been ***,these archived results are compared with fault-tolerant Earliest Deadline First(EDF)and Rate Monotonic Scheduling(RMS)algorithms independently in relatively similar *** comparisons show better performance against overloading conditions.

关键词： Fault tolerance joint edf-rms algorithm real-time systems(RTS) distributed systems migration